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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-25 10:29:09 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-25 10:29:09 -0800
commit7b46588f364f4f40c25f43ceabb6f705d20793e2 (patch)
tree29e80019ee791abe58176161f3ae2b766749b808 /lib
parent915f3e3f76c05b2da93c4cc278eebc2d9219d9f4 (diff)
parent95330473636e5e4546f94874c957c3be66bb2140 (diff)
downloadlinux-7b46588f364f4f40c25f43ceabb6f705d20793e2.tar.bz2
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: - almost all of the rest of MM - misc bits - KASAN updates - procfs - lib/ updates - checkpatch updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (124 commits) checkpatch: remove false unbalanced braces warning checkpatch: notice unbalanced else braces in a patch checkpatch: add another old address for the FSF checkpatch: update $logFunctions checkpatch: warn on logging continuations checkpatch: warn on embedded function names lib/lz4: remove back-compat wrappers fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version crypto: change LZ4 modules to work with new LZ4 module version lib/decompress_unlz4: change module to work with new LZ4 module version lib: update LZ4 compressor module lib/test_sort.c: make it explicitly non-modular lib: add CONFIG_TEST_SORT to enable self-test of sort() rbtree: use designated initializers linux/kernel.h: fix DIV_ROUND_CLOSEST to support negative divisors lib/find_bit.c: micro-optimise find_next_*_bit lib: add module support to atomic64 tests lib: add module support to glob tests lib: add module support to crc32 tests kernel/ksysfs.c: add __ro_after_init to bin_attribute structure ...
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig6
-rw-r--r--lib/Kconfig.debug13
-rw-r--r--lib/Makefile3
-rw-r--r--lib/atomic64_test.c10
-rw-r--r--lib/crc32.c824
-rw-r--r--lib/crc32test.c856
-rw-r--r--lib/decompress_unlz4.c13
-rw-r--r--lib/find_bit.c4
-rw-r--r--lib/glob.c164
-rw-r--r--lib/globtest.c167
-rw-r--r--lib/list_debug.c45
-rw-r--r--lib/lz4/Makefile2
-rw-r--r--lib/lz4/lz4_compress.c1141
-rw-r--r--lib/lz4/lz4_decompress.c665
-rw-r--r--lib/lz4/lz4defs.h338
-rw-r--r--lib/lz4/lz4hc_compress.c846
-rw-r--r--lib/rbtree.c4
-rw-r--r--lib/sort.c41
-rw-r--r--lib/test_kasan.c34
-rw-r--r--lib/test_sort.c44
20 files changed, 3142 insertions, 2078 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 87ecd41031bd..fe7e8e175db8 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -103,8 +103,7 @@ config CRC32
functions require M here.
config CRC32_SELFTEST
- bool "CRC32 perform self test on init"
- default n
+ tristate "CRC32 perform self test on init"
depends on CRC32
help
This option enables the CRC32 library functions to perform a
@@ -432,8 +431,7 @@ config GLOB
depends on this.
config GLOB_SELFTEST
- bool "glob self-test on init"
- default n
+ tristate "glob self-test on init"
depends on GLOB
help
This option enables a simple self-test of the glob_match
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 66fb4389f05c..55735c9bdb75 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1739,6 +1739,14 @@ config TEST_LIST_SORT
If unsure, say N.
+config TEST_SORT
+ bool "Array-based sort test"
+ depends on DEBUG_KERNEL
+ help
+ This option enables the self-test function of 'sort()' at boot.
+
+ If unsure, say N.
+
config KPROBES_SANITY_TEST
bool "Kprobes sanity tests"
depends on DEBUG_KERNEL
@@ -1790,9 +1798,10 @@ config PERCPU_TEST
If unsure, say N.
config ATOMIC64_SELFTEST
- bool "Perform an atomic64_t self-test at boot"
+ tristate "Perform an atomic64_t self-test"
help
- Enable this option to test the atomic64_t functions at boot.
+ Enable this option to test the atomic64_t functions at boot or
+ at module load time.
If unsure, say N.
diff --git a/lib/Makefile b/lib/Makefile
index f1a0364af377..445a39c21f46 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_TEST_KASAN) += test_kasan.o
obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
obj-$(CONFIG_TEST_LKM) += test_module.o
obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
+obj-$(CONFIG_TEST_SORT) += test_sort.o
obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
@@ -92,6 +93,7 @@ obj-$(CONFIG_CRC16) += crc16.o
obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o
obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o
obj-$(CONFIG_CRC32) += crc32.o
+obj-$(CONFIG_CRC32_SELFTEST) += crc32test.o
obj-$(CONFIG_CRC7) += crc7.o
obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
obj-$(CONFIG_CRC8) += crc8.o
@@ -161,6 +163,7 @@ obj-$(CONFIG_CORDIC) += cordic.o
obj-$(CONFIG_DQL) += dynamic_queue_limits.o
obj-$(CONFIG_GLOB) += glob.o
+obj-$(CONFIG_GLOB_SELFTEST) += globtest.o
obj-$(CONFIG_MPILIB) += mpi/
obj-$(CONFIG_SIGNATURE) += digsig.o
diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 46042901130f..fd70c0e0e673 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -15,6 +15,7 @@
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/atomic.h>
+#include <linux/module.h>
#ifdef CONFIG_X86
#include <asm/cpufeature.h> /* for boot_cpu_has below */
@@ -241,7 +242,7 @@ static __init void test_atomic64(void)
BUG_ON(v.counter != r);
}
-static __init int test_atomics(void)
+static __init int test_atomics_init(void)
{
test_atomic();
test_atomic64();
@@ -264,4 +265,9 @@ static __init int test_atomics(void)
return 0;
}
-core_initcall(test_atomics);
+static __exit void test_atomics_exit(void) {}
+
+module_init(test_atomics_init);
+module_exit(test_atomics_exit);
+
+MODULE_LICENSE("GPL");
diff --git a/lib/crc32.c b/lib/crc32.c
index 7fbd1a112b9d..6ddc92bc1460 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -340,827 +340,3 @@ u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
}
#endif
EXPORT_SYMBOL(crc32_be);
-
-#ifdef CONFIG_CRC32_SELFTEST
-
-/* 4096 random bytes */
-static u8 const __aligned(8) test_buf[] __initconst =
-{
- 0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
- 0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
- 0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
- 0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
- 0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
- 0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
- 0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
- 0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
- 0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
- 0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
- 0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
- 0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
- 0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
- 0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
- 0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
- 0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
- 0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
- 0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
- 0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
- 0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
- 0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
- 0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
- 0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
- 0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
- 0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
- 0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
- 0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
- 0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
- 0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
- 0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
- 0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
- 0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
- 0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
- 0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
- 0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
- 0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
- 0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
- 0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
- 0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
- 0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
- 0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
- 0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
- 0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
- 0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
- 0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
- 0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
- 0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
- 0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
- 0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
- 0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
- 0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
- 0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
- 0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
- 0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
- 0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
- 0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
- 0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
- 0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
- 0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
- 0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
- 0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
- 0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
- 0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
- 0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
- 0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
- 0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
- 0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
- 0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
- 0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
- 0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
- 0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
- 0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
- 0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
- 0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
- 0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
- 0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
- 0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
- 0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
- 0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
- 0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
- 0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
- 0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
- 0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
- 0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
- 0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
- 0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
- 0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
- 0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
- 0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
- 0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
- 0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
- 0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
- 0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
- 0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
- 0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
- 0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
- 0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
- 0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
- 0x7a, 0x5c, 0xc8, 0xd1, 0xcb, 0x4a, 0xec, 0xd0,
- 0xd8, 0x20, 0x69, 0xc5, 0x17, 0xcd, 0x78, 0xc8,
- 0x75, 0x23, 0x30, 0x69, 0xc9, 0xd4, 0xea, 0x5c,
- 0x4f, 0x6b, 0x86, 0x3f, 0x8b, 0xfe, 0xee, 0x44,
- 0xc9, 0x7c, 0xb7, 0xdd, 0x3e, 0xe5, 0xec, 0x54,
- 0x03, 0x3e, 0xaa, 0x82, 0xc6, 0xdf, 0xb2, 0x38,
- 0x0e, 0x5d, 0xb3, 0x88, 0xd9, 0xd3, 0x69, 0x5f,
- 0x8f, 0x70, 0x8a, 0x7e, 0x11, 0xd9, 0x1e, 0x7b,
- 0x38, 0xf1, 0x42, 0x1a, 0xc0, 0x35, 0xf5, 0xc7,
- 0x36, 0x85, 0xf5, 0xf7, 0xb8, 0x7e, 0xc7, 0xef,
- 0x18, 0xf1, 0x63, 0xd6, 0x7a, 0xc6, 0xc9, 0x0e,
- 0x4d, 0x69, 0x4f, 0x84, 0xef, 0x26, 0x41, 0x0c,
- 0xec, 0xc7, 0xe0, 0x7e, 0x3c, 0x67, 0x01, 0x4c,
- 0x62, 0x1a, 0x20, 0x6f, 0xee, 0x47, 0x4d, 0xc0,
- 0x99, 0x13, 0x8d, 0x91, 0x4a, 0x26, 0xd4, 0x37,
- 0x28, 0x90, 0x58, 0x75, 0x66, 0x2b, 0x0a, 0xdf,
- 0xda, 0xee, 0x92, 0x25, 0x90, 0x62, 0x39, 0x9e,
- 0x44, 0x98, 0xad, 0xc1, 0x88, 0xed, 0xe4, 0xb4,
- 0xaf, 0xf5, 0x8c, 0x9b, 0x48, 0x4d, 0x56, 0x60,
- 0x97, 0x0f, 0x61, 0x59, 0x9e, 0xa6, 0x27, 0xfe,
- 0xc1, 0x91, 0x15, 0x38, 0xb8, 0x0f, 0xae, 0x61,
- 0x7d, 0x26, 0x13, 0x5a, 0x73, 0xff, 0x1c, 0xa3,
- 0x61, 0x04, 0x58, 0x48, 0x55, 0x44, 0x11, 0xfe,
- 0x15, 0xca, 0xc3, 0xbd, 0xca, 0xc5, 0xb4, 0x40,
- 0x5d, 0x1b, 0x7f, 0x39, 0xb5, 0x9c, 0x35, 0xec,
- 0x61, 0x15, 0x32, 0x32, 0xb8, 0x4e, 0x40, 0x9f,
- 0x17, 0x1f, 0x0a, 0x4d, 0xa9, 0x91, 0xef, 0xb7,
- 0xb0, 0xeb, 0xc2, 0x83, 0x9a, 0x6c, 0xd2, 0x79,
- 0x43, 0x78, 0x5e, 0x2f, 0xe5, 0xdd, 0x1a, 0x3c,
- 0x45, 0xab, 0x29, 0x40, 0x3a, 0x37, 0x5b, 0x6f,
- 0xd7, 0xfc, 0x48, 0x64, 0x3c, 0x49, 0xfb, 0x21,
- 0xbe, 0xc3, 0xff, 0x07, 0xfb, 0x17, 0xe9, 0xc9,
- 0x0c, 0x4c, 0x5c, 0x15, 0x9e, 0x8e, 0x22, 0x30,
- 0x0a, 0xde, 0x48, 0x7f, 0xdb, 0x0d, 0xd1, 0x2b,
- 0x87, 0x38, 0x9e, 0xcc, 0x5a, 0x01, 0x16, 0xee,
- 0x75, 0x49, 0x0d, 0x30, 0x01, 0x34, 0x6a, 0xb6,
- 0x9a, 0x5a, 0x2a, 0xec, 0xbb, 0x48, 0xac, 0xd3,
- 0x77, 0x83, 0xd8, 0x08, 0x86, 0x4f, 0x48, 0x09,
- 0x29, 0x41, 0x79, 0xa1, 0x03, 0x12, 0xc4, 0xcd,
- 0x90, 0x55, 0x47, 0x66, 0x74, 0x9a, 0xcc, 0x4f,
- 0x35, 0x8c, 0xd6, 0x98, 0xef, 0xeb, 0x45, 0xb9,
- 0x9a, 0x26, 0x2f, 0x39, 0xa5, 0x70, 0x6d, 0xfc,
- 0xb4, 0x51, 0xee, 0xf4, 0x9c, 0xe7, 0x38, 0x59,
- 0xad, 0xf4, 0xbc, 0x46, 0xff, 0x46, 0x8e, 0x60,
- 0x9c, 0xa3, 0x60, 0x1d, 0xf8, 0x26, 0x72, 0xf5,
- 0x72, 0x9d, 0x68, 0x80, 0x04, 0xf6, 0x0b, 0xa1,
- 0x0a, 0xd5, 0xa7, 0x82, 0x3a, 0x3e, 0x47, 0xa8,
- 0x5a, 0xde, 0x59, 0x4f, 0x7b, 0x07, 0xb3, 0xe9,
- 0x24, 0x19, 0x3d, 0x34, 0x05, 0xec, 0xf1, 0xab,
- 0x6e, 0x64, 0x8f, 0xd3, 0xe6, 0x41, 0x86, 0x80,
- 0x70, 0xe3, 0x8d, 0x60, 0x9c, 0x34, 0x25, 0x01,
- 0x07, 0x4d, 0x19, 0x41, 0x4e, 0x3d, 0x5c, 0x7e,
- 0xa8, 0xf5, 0xcc, 0xd5, 0x7b, 0xe2, 0x7d, 0x3d,
- 0x49, 0x86, 0x7d, 0x07, 0xb7, 0x10, 0xe3, 0x35,
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- 0x42, 0x01, 0x77, 0x23, 0x68, 0x95, 0xb6, 0x24,
- 0xb3, 0xa8, 0x6c, 0x28, 0x3b, 0x11, 0x40, 0x7e,
- 0x18, 0x65, 0x6d, 0xd8, 0x24, 0x42, 0x7d, 0x88,
- 0xc0, 0x52, 0xd9, 0x05, 0xe4, 0x95, 0x90, 0x87,
- 0x8c, 0xf4, 0xd0, 0x6b, 0xb9, 0x83, 0x99, 0x34,
- 0x6d, 0xfe, 0x54, 0x40, 0x94, 0x52, 0x21, 0x4f,
- 0x14, 0x25, 0xc5, 0xd6, 0x5e, 0x95, 0xdc, 0x0a,
- 0x2b, 0x89, 0x20, 0x11, 0x84, 0x48, 0xd6, 0x3a,
- 0xcd, 0x5c, 0x24, 0xad, 0x62, 0xe3, 0xb1, 0x93,
- 0x25, 0x8d, 0xcd, 0x7e, 0xfc, 0x27, 0xa3, 0x37,
- 0xfd, 0x84, 0xfc, 0x1b, 0xb2, 0xf1, 0x27, 0x38,
- 0x5a, 0xb7, 0xfc, 0xf2, 0xfa, 0x95, 0x66, 0xd4,
- 0xfb, 0xba, 0xa7, 0xd7, 0xa3, 0x72, 0x69, 0x48,
- 0x48, 0x8c, 0xeb, 0x28, 0x89, 0xfe, 0x33, 0x65,
- 0x5a, 0x36, 0x01, 0x7e, 0x06, 0x79, 0x0a, 0x09,
- 0x3b, 0x74, 0x11, 0x9a, 0x6e, 0xbf, 0xd4, 0x9e,
- 0x58, 0x90, 0x49, 0x4f, 0x4d, 0x08, 0xd4, 0xe5,
- 0x4a, 0x09, 0x21, 0xef, 0x8b, 0xb8, 0x74, 0x3b,
- 0x91, 0xdd, 0x36, 0x85, 0x60, 0x2d, 0xfa, 0xd4,
- 0x45, 0x7b, 0x45, 0x53, 0xf5, 0x47, 0x87, 0x7e,
- 0xa6, 0x37, 0xc8, 0x78, 0x7a, 0x68, 0x9d, 0x8d,
- 0x65, 0x2c, 0x0e, 0x91, 0x5c, 0xa2, 0x60, 0xf0,
- 0x8e, 0x3f, 0xe9, 0x1a, 0xcd, 0xaa, 0xe7, 0xd5,
- 0x77, 0x18, 0xaf, 0xc9, 0xbc, 0x18, 0xea, 0x48,
- 0x1b, 0xfb, 0x22, 0x48, 0x70, 0x16, 0x29, 0x9e,
- 0x5b, 0xc1, 0x2c, 0x66, 0x23, 0xbc, 0xf0, 0x1f,
- 0xef, 0xaf, 0xe4, 0xd6, 0x04, 0x19, 0x82, 0x7a,
- 0x0b, 0xba, 0x4b, 0x46, 0xb1, 0x6a, 0x85, 0x5d,
- 0xb4, 0x73, 0xd6, 0x21, 0xa1, 0x71, 0x60, 0x14,
- 0xee, 0x0a, 0x77, 0xc4, 0x66, 0x2e, 0xf9, 0x69,
- 0x30, 0xaf, 0x41, 0x0b, 0xc8, 0x83, 0x3c, 0x53,
- 0x99, 0x19, 0x27, 0x46, 0xf7, 0x41, 0x6e, 0x56,
- 0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48,
- 0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4,
- 0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26,
- 0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e,
- 0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40,
- 0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7,
- 0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62,
- 0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe,
- 0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf,
- 0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
- 0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
- 0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
- 0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
- 0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
- 0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
- 0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
- 0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
- 0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
- 0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
- 0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
- 0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
- 0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
- 0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
- 0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
- 0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
- 0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
- 0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
- 0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
- 0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
- 0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
- 0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
- 0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
- 0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
- 0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
- 0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
- 0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
- 0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
- 0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
- 0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
- 0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
- 0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
- 0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
- 0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
- 0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
- 0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
- 0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
- 0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
- 0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
- 0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
- 0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
- 0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
- 0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
- 0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
- 0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
- 0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
- 0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
- 0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
- 0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
- 0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
- 0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
- 0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
- 0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
- 0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
- 0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
- 0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
- 0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
- 0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
- 0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
- 0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
- 0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
- 0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
- 0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
- 0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
- 0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
- 0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
- 0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
- 0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
- 0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
- 0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
- 0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
- 0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
- 0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
- 0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
- 0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
- 0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
- 0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
- 0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
- 0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
- 0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
- 0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
- 0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
- 0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
- 0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
- 0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
- 0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
- 0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
- 0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
- 0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
- 0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
- 0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
- 0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
- 0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
- 0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
- 0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
- 0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
- 0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
- 0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
- 0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
- 0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
- 0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
-};
-
-/* 100 test cases */
-static struct crc_test {
- u32 crc; /* random starting crc */
- u32 start; /* random 6 bit offset in buf */
- u32 length; /* random 11 bit length of test */
- u32 crc_le; /* expected crc32_le result */
- u32 crc_be; /* expected crc32_be result */
- u32 crc32c_le; /* expected crc32c_le result */
-} const test[] __initconst =
-{
- {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1, 0xf6e93d6c},
- {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad, 0x0fe92aca},
- {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f, 0x52e1ebb8},
- {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a, 0x0798af9a},
- {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2, 0x18eb3152},
- {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793, 0xd00d08c7},
- {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed, 0x8ba966bc},
- {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35, 0x11d694a2},
- {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2, 0x6ab3208d},
- {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10, 0xba4603c5},
- {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb, 0xe6071c6f},
- {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0, 0x179ec30a},
- {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb, 0x0903beb8},
- {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed, 0x6a7cb4fa},
- {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591, 0xdb535801},
- {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67, 0x92bed597},
- {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd, 0x192a3f1b},
- {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a, 0xccbaec1a},
- {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b, 0x7eabae4d},
- {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f, 0x28c72982},
- {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d, 0xc3cd4d18},
- {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a, 0xbca8f0e7},
- {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97, 0x713f60b3},
- {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2, 0xebd08fd5},
- {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138, 0x64406c59},
- {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032, 0x7421890e},
- {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f, 0xe9347603},
- {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f, 0x1bef9060},
- {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32, 0x34720072},
- {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef, 0x48310f59},
- {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0, 0x783a4213},
- {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59, 0x9e8efd41},
- {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4, 0xfc3d34a5},
- {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c, 0x17a52ae2},
- {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51, 0x886d935a},
- {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11, 0xeaaeaeb2},
- {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659, 0x8e900a4b},
- {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af, 0xd74662b1},
- {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99, 0xd26752ba},
- {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b, 0x8b1fcd62},
- {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521, 0xf54342fe},
- {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3, 0x5b95b988},
- {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d, 0x2e1176be},
- {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f, 0x66120546},
- {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b, 0xf256a5cc},
- {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0, 0x4af1dd69},
- {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195, 0x56f0a04a},
- {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d, 0x74f6b6b2},
- {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4, 0x085951fd},
- {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3, 0xc65387eb},
- {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643, 0x1ca9257b},
- {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10, 0xfd196d76},
- {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d, 0x5ef88339},
- {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5, 0x2c3714d9},
- {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b, 0x58576548},
- {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee, 0xfd7c57de},
- {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14, 0xd5fedd59},
- {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a, 0x1cc3b17b},
- {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b, 0x270eed73},
- {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3, 0x91ecbb11},
- {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826, 0x05ed8d0c},
- {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06, 0x0b09ad5b},
- {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35, 0xf8d511fb},
- {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801, 0x5ad832cc},
- {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2, 0x1214d196},
- {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d, 0x5747218a},
- {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c, 0xde8f14de},
- {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba, 0x3563b7b9},
- {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5, 0x071475d0},
- {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b, 0x54c79d60},
- {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178, 0x4c53eee6},
- {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3, 0x10137a3c},
- {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605, 0xaa9d6c73},
- {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1, 0xb63d23e7},
- {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9, 0x7f53e9cf},
- {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78, 0x13c1cd83},
- {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9, 0x49ff5867},
- {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd, 0x8467f211},
- {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab, 0x3f9683b2},
- {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb, 0x76a3f874},
- {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77, 0x863b702f},
- {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da, 0xdc6c58ff},
- {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39, 0x0622cc95},
- {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16, 0xe85605cd},
- {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208, 0x31da5f06},
- {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e, 0xa1f2e784},
- {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5, 0xb07cc616},
- {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892, 0xbf943b6c},
- {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db, 0x2c01af1c},
- {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43, 0x0fe5f56d},
- {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac, 0xf8943b2d},
- {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7, 0xe4d89272},
- {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2, 0x7c2f6bbb},
- {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2, 0xabbf388b},
- {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640, 0x1dca1f4e},
- {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f, 0x5c170e23},
- {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99, 0xc0e9d672},
- {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7, 0xc18bdc86},
- {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499, 0xa874fcdd},
- {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a, 0x9dc0bb48},
-};
-
-#include <linux/time.h>
-
-static int __init crc32c_test(void)
-{
- int i;
- int errors = 0;
- int bytes = 0;
- u64 nsec;
- unsigned long flags;
-
- /* keep static to prevent cache warming code from
- * getting eliminated by the compiler */
- static u32 crc;
-
- /* pre-warm the cache */
- for (i = 0; i < 100; i++) {
- bytes += 2*test[i].length;
-
- crc ^= __crc32c_le(test[i].crc, test_buf +
- test[i].start, test[i].length);
- }
-
- /* reduce OS noise */
- local_irq_save(flags);
- local_irq_disable();
-
- nsec = ktime_get_ns();
- for (i = 0; i < 100; i++) {
- if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf +
- test[i].start, test[i].length))
- errors++;
- }
- nsec = ktime_get_ns() - nsec;
-
- local_irq_restore(flags);
- local_irq_enable();
-
- pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
-
- if (errors)
- pr_warn("crc32c: %d self tests failed\n", errors);
- else {
- pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
- bytes, nsec);
- }
-
- return 0;
-}
-
-static int __init crc32c_combine_test(void)
-{
- int i, j;
- int errors = 0, runs = 0;
-
- for (i = 0; i < 10; i++) {
- u32 crc_full;
-
- crc_full = __crc32c_le(test[i].crc, test_buf + test[i].start,
- test[i].length);
- for (j = 0; j <= test[i].length; ++j) {
- u32 crc1, crc2;
- u32 len1 = j, len2 = test[i].length - j;
-
- crc1 = __crc32c_le(test[i].crc, test_buf +
- test[i].start, len1);
- crc2 = __crc32c_le(0, test_buf + test[i].start +
- len1, len2);
-
- if (!(crc_full == __crc32c_le_combine(crc1, crc2, len2) &&
- crc_full == test[i].crc32c_le))
- errors++;
- runs++;
- cond_resched();
- }
- }
-
- if (errors)
- pr_warn("crc32c_combine: %d/%d self tests failed\n", errors, runs);
- else
- pr_info("crc32c_combine: %d self tests passed\n", runs);
-
- return 0;
-}
-
-static int __init crc32_test(void)
-{
- int i;
- int errors = 0;
- int bytes = 0;
- u64 nsec;
- unsigned long flags;
-
- /* keep static to prevent cache warming code from
- * getting eliminated by the compiler */
- static u32 crc;
-
- /* pre-warm the cache */
- for (i = 0; i < 100; i++) {
- bytes += 2*test[i].length;
-
- crc ^= crc32_le(test[i].crc, test_buf +
- test[i].start, test[i].length);
-
- crc ^= crc32_be(test[i].crc, test_buf +
- test[i].start, test[i].length);
- }
-
- /* reduce OS noise */
- local_irq_save(flags);
- local_irq_disable();
-
- nsec = ktime_get_ns();
- for (i = 0; i < 100; i++) {
- if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
- test[i].start, test[i].length))
- errors++;
-
- if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
- test[i].start, test[i].length))
- errors++;
- }
- nsec = ktime_get_ns() - nsec;
-
- local_irq_restore(flags);
- local_irq_enable();
-
- pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
- CRC_LE_BITS, CRC_BE_BITS);
-
- if (errors)
- pr_warn("crc32: %d self tests failed\n", errors);
- else {
- pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
- bytes, nsec);
- }
-
- return 0;
-}
-
-static int __init crc32_combine_test(void)
-{
- int i, j;
- int errors = 0, runs = 0;
-
- for (i = 0; i < 10; i++) {
- u32 crc_full;
-
- crc_full = crc32_le(test[i].crc, test_buf + test[i].start,
- test[i].length);
- for (j = 0; j <= test[i].length; ++j) {
- u32 crc1, crc2;
- u32 len1 = j, len2 = test[i].length - j;
-
- crc1 = crc32_le(test[i].crc, test_buf +
- test[i].start, len1);
- crc2 = crc32_le(0, test_buf + test[i].start +
- len1, len2);
-
- if (!(crc_full == crc32_le_combine(crc1, crc2, len2) &&
- crc_full == test[i].crc_le))
- errors++;
- runs++;
- cond_resched();
- }
- }
-
- if (errors)
- pr_warn("crc32_combine: %d/%d self tests failed\n", errors, runs);
- else
- pr_info("crc32_combine: %d self tests passed\n", runs);
-
- return 0;
-}
-
-static int __init crc32test_init(void)
-{
- crc32_test();
- crc32c_test();
-
- crc32_combine_test();
- crc32c_combine_test();
-
- return 0;
-}
-
-static void __exit crc32_exit(void)
-{
-}
-
-module_init(crc32test_init);
-module_exit(crc32_exit);
-#endif /* CONFIG_CRC32_SELFTEST */
diff --git a/lib/crc32test.c b/lib/crc32test.c
new file mode 100644
index 000000000000..97d6a57cefcc
--- /dev/null
+++ b/lib/crc32test.c
@@ -0,0 +1,856 @@
+/*
+ * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin
+ * cleaned up code to current version of sparse and added the slicing-by-8
+ * algorithm to the closely similar existing slicing-by-4 algorithm.
+ *
+ * Oct 15, 2000 Matt Domsch <Matt_Domsch@dell.com>
+ * Nicer crc32 functions/docs submitted by linux@horizon.com. Thanks!
+ * Code was from the public domain, copyright abandoned. Code was
+ * subsequently included in the kernel, thus was re-licensed under the
+ * GNU GPL v2.
+ *
+ * Oct 12, 2000 Matt Domsch <Matt_Domsch@dell.com>
+ * Same crc32 function was used in 5 other places in the kernel.
+ * I made one version, and deleted the others.
+ * There are various incantations of crc32(). Some use a seed of 0 or ~0.
+ * Some xor at the end with ~0. The generic crc32() function takes
+ * seed as an argument, and doesn't xor at the end. Then individual
+ * users can do whatever they need.
+ * drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0.
+ * fs/jffs2 uses seed 0, doesn't xor with ~0.
+ * fs/partitions/efi.c uses seed ~0, xor's with ~0.
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#include <linux/crc32.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include "crc32defs.h"
+
+/* 4096 random bytes */
+static u8 const __aligned(8) test_buf[] __initconst =
+{
+ 0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
+ 0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
+ 0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
+ 0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
+ 0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
+ 0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
+ 0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
+ 0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
+ 0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
+ 0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
+ 0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
+ 0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
+ 0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
+ 0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
+ 0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
+ 0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
+ 0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
+ 0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
+ 0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
+ 0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
+ 0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
+ 0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
+ 0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
+ 0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
+ 0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
+ 0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
+ 0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
+ 0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
+ 0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
+ 0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
+ 0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
+ 0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
+ 0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
+ 0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
+ 0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
+ 0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
+ 0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
+ 0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
+ 0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
+ 0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
+ 0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
+ 0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
+ 0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
+ 0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
+ 0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
+ 0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
+ 0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
+ 0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
+ 0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
+ 0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
+ 0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
+ 0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
+ 0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
+ 0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
+ 0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
+ 0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
+ 0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
+ 0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
+ 0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
+ 0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
+ 0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
+ 0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
+ 0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
+ 0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
+ 0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
+ 0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
+ 0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
+ 0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
+ 0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
+ 0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
+ 0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
+ 0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
+ 0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
+ 0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
+ 0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
+ 0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
+ 0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
+ 0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
+ 0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
+ 0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
+ 0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
+ 0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
+ 0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
+ 0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
+ 0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
+ 0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
+ 0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
+ 0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
+ 0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
+ 0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
+ 0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
+ 0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
+ 0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
+ 0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
+ 0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
+ 0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
+ 0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
+ 0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
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+ 0x79, 0x26, 0xe0, 0x49, 0x6b, 0xb7, 0x05, 0x8b,
+ 0xe8, 0x0e, 0x87, 0x31, 0xd7, 0x9d, 0x8a, 0xf5,
+ 0xc0, 0x5f, 0x2e, 0x58, 0x4a, 0xdb, 0x11, 0xb3,
+ 0x6c, 0x30, 0x2a, 0x46, 0x19, 0xe3, 0x27, 0x84,
+ 0x1f, 0x63, 0x6e, 0xf6, 0x57, 0xc7, 0xc9, 0xd8,
+ 0x5e, 0xba, 0xb3, 0x87, 0xd5, 0x83, 0x26, 0x34,
+ 0x21, 0x9e, 0x65, 0xde, 0x42, 0xd3, 0xbe, 0x7b,
+ 0xbc, 0x91, 0x71, 0x44, 0x4d, 0x99, 0x3b, 0x31,
+ 0xe5, 0x3f, 0x11, 0x4e, 0x7f, 0x13, 0x51, 0x3b,
+ 0xae, 0x79, 0xc9, 0xd3, 0x81, 0x8e, 0x25, 0x40,
+ 0x10, 0xfc, 0x07, 0x1e, 0xf9, 0x7b, 0x9a, 0x4b,
+ 0x6c, 0xe3, 0xb3, 0xad, 0x1a, 0x0a, 0xdd, 0x9e,
+ 0x59, 0x0c, 0xa2, 0xcd, 0xae, 0x48, 0x4a, 0x38,
+ 0x5b, 0x47, 0x41, 0x94, 0x65, 0x6b, 0xbb, 0xeb,
+ 0x5b, 0xe3, 0xaf, 0x07, 0x5b, 0xd4, 0x4a, 0xa2,
+ 0xc9, 0x5d, 0x2f, 0x64, 0x03, 0xd7, 0x3a, 0x2c,
+ 0x6e, 0xce, 0x76, 0x95, 0xb4, 0xb3, 0xc0, 0xf1,
+ 0xe2, 0x45, 0x73, 0x7a, 0x5c, 0xab, 0xc1, 0xfc,
+ 0x02, 0x8d, 0x81, 0x29, 0xb3, 0xac, 0x07, 0xec,
+ 0x40, 0x7d, 0x45, 0xd9, 0x7a, 0x59, 0xee, 0x34,
+ 0xf0, 0xe9, 0xd5, 0x7b, 0x96, 0xb1, 0x3d, 0x95,
+ 0xcc, 0x86, 0xb5, 0xb6, 0x04, 0x2d, 0xb5, 0x92,
+ 0x7e, 0x76, 0xf4, 0x06, 0xa9, 0xa3, 0x12, 0x0f,
+ 0xb1, 0xaf, 0x26, 0xba, 0x7c, 0xfc, 0x7e, 0x1c,
+ 0xbc, 0x2c, 0x49, 0x97, 0x53, 0x60, 0x13, 0x0b,
+ 0xa6, 0x61, 0x83, 0x89, 0x42, 0xd4, 0x17, 0x0c,
+ 0x6c, 0x26, 0x52, 0xc3, 0xb3, 0xd4, 0x67, 0xf5,
+ 0xe3, 0x04, 0xb7, 0xf4, 0xcb, 0x80, 0xb8, 0xcb,
+ 0x77, 0x56, 0x3e, 0xaa, 0x57, 0x54, 0xee, 0xb4,
+ 0x2c, 0x67, 0xcf, 0xf2, 0xdc, 0xbe, 0x55, 0xf9,
+ 0x43, 0x1f, 0x6e, 0x22, 0x97, 0x67, 0x7f, 0xc4,
+ 0xef, 0xb1, 0x26, 0x31, 0x1e, 0x27, 0xdf, 0x41,
+ 0x80, 0x47, 0x6c, 0xe2, 0xfa, 0xa9, 0x8c, 0x2a,
+ 0xf6, 0xf2, 0xab, 0xf0, 0x15, 0xda, 0x6c, 0xc8,
+ 0xfe, 0xb5, 0x23, 0xde, 0xa9, 0x05, 0x3f, 0x06,
+ 0x54, 0x4c, 0xcd, 0xe1, 0xab, 0xfc, 0x0e, 0x62,
+ 0x33, 0x31, 0x73, 0x2c, 0x76, 0xcb, 0xb4, 0x47,
+ 0x1e, 0x20, 0xad, 0xd8, 0xf2, 0x31, 0xdd, 0xc4,
+ 0x8b, 0x0c, 0x77, 0xbe, 0xe1, 0x8b, 0x26, 0x00,
+ 0x02, 0x58, 0xd6, 0x8d, 0xef, 0xad, 0x74, 0x67,
+ 0xab, 0x3f, 0xef, 0xcb, 0x6f, 0xb0, 0xcc, 0x81,
+ 0x44, 0x4c, 0xaf, 0xe9, 0x49, 0x4f, 0xdb, 0xa0,
+ 0x25, 0xa4, 0xf0, 0x89, 0xf1, 0xbe, 0xd8, 0x10,
+ 0xff, 0xb1, 0x3b, 0x4b, 0xfa, 0x98, 0xf5, 0x79,
+ 0x6d, 0x1e, 0x69, 0x4d, 0x57, 0xb1, 0xc8, 0x19,
+ 0x1b, 0xbd, 0x1e, 0x8c, 0x84, 0xb7, 0x7b, 0xe8,
+ 0xd2, 0x2d, 0x09, 0x41, 0x41, 0x37, 0x3d, 0xb1,
+ 0x6f, 0x26, 0x5d, 0x71, 0x16, 0x3d, 0xb7, 0x83,
+ 0x27, 0x2c, 0xa7, 0xb6, 0x50, 0xbd, 0x91, 0x86,
+ 0xab, 0x24, 0xa1, 0x38, 0xfd, 0xea, 0x71, 0x55,
+ 0x7e, 0x9a, 0x07, 0x77, 0x4b, 0xfa, 0x61, 0x66,
+ 0x20, 0x1e, 0x28, 0x95, 0x18, 0x1b, 0xa4, 0xa0,
+ 0xfd, 0xc0, 0x89, 0x72, 0x43, 0xd9, 0x3b, 0x49,
+ 0x5a, 0x3f, 0x9d, 0xbf, 0xdb, 0xb4, 0x46, 0xea,
+ 0x42, 0x01, 0x77, 0x23, 0x68, 0x95, 0xb6, 0x24,
+ 0xb3, 0xa8, 0x6c, 0x28, 0x3b, 0x11, 0x40, 0x7e,
+ 0x18, 0x65, 0x6d, 0xd8, 0x24, 0x42, 0x7d, 0x88,
+ 0xc0, 0x52, 0xd9, 0x05, 0xe4, 0x95, 0x90, 0x87,
+ 0x8c, 0xf4, 0xd0, 0x6b, 0xb9, 0x83, 0x99, 0x34,
+ 0x6d, 0xfe, 0x54, 0x40, 0x94, 0x52, 0x21, 0x4f,
+ 0x14, 0x25, 0xc5, 0xd6, 0x5e, 0x95, 0xdc, 0x0a,
+ 0x2b, 0x89, 0x20, 0x11, 0x84, 0x48, 0xd6, 0x3a,
+ 0xcd, 0x5c, 0x24, 0xad, 0x62, 0xe3, 0xb1, 0x93,
+ 0x25, 0x8d, 0xcd, 0x7e, 0xfc, 0x27, 0xa3, 0x37,
+ 0xfd, 0x84, 0xfc, 0x1b, 0xb2, 0xf1, 0x27, 0x38,
+ 0x5a, 0xb7, 0xfc, 0xf2, 0xfa, 0x95, 0x66, 0xd4,
+ 0xfb, 0xba, 0xa7, 0xd7, 0xa3, 0x72, 0x69, 0x48,
+ 0x48, 0x8c, 0xeb, 0x28, 0x89, 0xfe, 0x33, 0x65,
+ 0x5a, 0x36, 0x01, 0x7e, 0x06, 0x79, 0x0a, 0x09,
+ 0x3b, 0x74, 0x11, 0x9a, 0x6e, 0xbf, 0xd4, 0x9e,
+ 0x58, 0x90, 0x49, 0x4f, 0x4d, 0x08, 0xd4, 0xe5,
+ 0x4a, 0x09, 0x21, 0xef, 0x8b, 0xb8, 0x74, 0x3b,
+ 0x91, 0xdd, 0x36, 0x85, 0x60, 0x2d, 0xfa, 0xd4,
+ 0x45, 0x7b, 0x45, 0x53, 0xf5, 0x47, 0x87, 0x7e,
+ 0xa6, 0x37, 0xc8, 0x78, 0x7a, 0x68, 0x9d, 0x8d,
+ 0x65, 0x2c, 0x0e, 0x91, 0x5c, 0xa2, 0x60, 0xf0,
+ 0x8e, 0x3f, 0xe9, 0x1a, 0xcd, 0xaa, 0xe7, 0xd5,
+ 0x77, 0x18, 0xaf, 0xc9, 0xbc, 0x18, 0xea, 0x48,
+ 0x1b, 0xfb, 0x22, 0x48, 0x70, 0x16, 0x29, 0x9e,
+ 0x5b, 0xc1, 0x2c, 0x66, 0x23, 0xbc, 0xf0, 0x1f,
+ 0xef, 0xaf, 0xe4, 0xd6, 0x04, 0x19, 0x82, 0x7a,
+ 0x0b, 0xba, 0x4b, 0x46, 0xb1, 0x6a, 0x85, 0x5d,
+ 0xb4, 0x73, 0xd6, 0x21, 0xa1, 0x71, 0x60, 0x14,
+ 0xee, 0x0a, 0x77, 0xc4, 0x66, 0x2e, 0xf9, 0x69,
+ 0x30, 0xaf, 0x41, 0x0b, 0xc8, 0x83, 0x3c, 0x53,
+ 0x99, 0x19, 0x27, 0x46, 0xf7, 0x41, 0x6e, 0x56,
+ 0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48,
+ 0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4,
+ 0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26,
+ 0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e,
+ 0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40,
+ 0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7,
+ 0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62,
+ 0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe,
+ 0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf,
+ 0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
+ 0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
+ 0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
+ 0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
+ 0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
+ 0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
+ 0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
+ 0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
+ 0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
+ 0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
+ 0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
+ 0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
+ 0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
+ 0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
+ 0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
+ 0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
+ 0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
+ 0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
+ 0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
+ 0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
+ 0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
+ 0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
+ 0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
+ 0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
+ 0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
+ 0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
+ 0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
+ 0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
+ 0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
+ 0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
+ 0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
+ 0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
+ 0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
+ 0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
+ 0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
+ 0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
+ 0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
+ 0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
+ 0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
+ 0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
+ 0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
+ 0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
+ 0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
+ 0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
+ 0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
+ 0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
+ 0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
+ 0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
+ 0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
+ 0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
+ 0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
+ 0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
+ 0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
+ 0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
+ 0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
+ 0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
+ 0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
+ 0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
+ 0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
+ 0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
+ 0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
+ 0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
+ 0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
+ 0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
+ 0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
+ 0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
+ 0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
+ 0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
+ 0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
+ 0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
+ 0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
+ 0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
+ 0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
+ 0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
+ 0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
+ 0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
+ 0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
+ 0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
+ 0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
+ 0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
+ 0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
+ 0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
+ 0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
+ 0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
+ 0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
+ 0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
+ 0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
+ 0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
+ 0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
+ 0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
+ 0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
+ 0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
+ 0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
+ 0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
+ 0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
+ 0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
+ 0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
+ 0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
+ 0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
+ 0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
+ 0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
+};
+
+/* 100 test cases */
+static struct crc_test {
+ u32 crc; /* random starting crc */
+ u32 start; /* random 6 bit offset in buf */
+ u32 length; /* random 11 bit length of test */
+ u32 crc_le; /* expected crc32_le result */
+ u32 crc_be; /* expected crc32_be result */
+ u32 crc32c_le; /* expected crc32c_le result */
+} const test[] __initconst =
+{
+ {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1, 0xf6e93d6c},
+ {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad, 0x0fe92aca},
+ {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f, 0x52e1ebb8},
+ {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a, 0x0798af9a},
+ {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2, 0x18eb3152},
+ {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793, 0xd00d08c7},
+ {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed, 0x8ba966bc},
+ {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35, 0x11d694a2},
+ {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2, 0x6ab3208d},
+ {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10, 0xba4603c5},
+ {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb, 0xe6071c6f},
+ {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0, 0x179ec30a},
+ {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb, 0x0903beb8},
+ {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed, 0x6a7cb4fa},
+ {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591, 0xdb535801},
+ {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67, 0x92bed597},
+ {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd, 0x192a3f1b},
+ {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a, 0xccbaec1a},
+ {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b, 0x7eabae4d},
+ {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f, 0x28c72982},
+ {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d, 0xc3cd4d18},
+ {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a, 0xbca8f0e7},
+ {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97, 0x713f60b3},
+ {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2, 0xebd08fd5},
+ {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138, 0x64406c59},
+ {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032, 0x7421890e},
+ {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f, 0xe9347603},
+ {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f, 0x1bef9060},
+ {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32, 0x34720072},
+ {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef, 0x48310f59},
+ {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0, 0x783a4213},
+ {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59, 0x9e8efd41},
+ {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4, 0xfc3d34a5},
+ {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c, 0x17a52ae2},
+ {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51, 0x886d935a},
+ {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11, 0xeaaeaeb2},
+ {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659, 0x8e900a4b},
+ {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af, 0xd74662b1},
+ {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99, 0xd26752ba},
+ {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b, 0x8b1fcd62},
+ {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521, 0xf54342fe},
+ {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3, 0x5b95b988},
+ {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d, 0x2e1176be},
+ {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f, 0x66120546},
+ {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b, 0xf256a5cc},
+ {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0, 0x4af1dd69},
+ {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195, 0x56f0a04a},
+ {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d, 0x74f6b6b2},
+ {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4, 0x085951fd},
+ {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3, 0xc65387eb},
+ {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643, 0x1ca9257b},
+ {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10, 0xfd196d76},
+ {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d, 0x5ef88339},
+ {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5, 0x2c3714d9},
+ {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b, 0x58576548},
+ {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee, 0xfd7c57de},
+ {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14, 0xd5fedd59},
+ {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a, 0x1cc3b17b},
+ {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b, 0x270eed73},
+ {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3, 0x91ecbb11},
+ {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826, 0x05ed8d0c},
+ {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06, 0x0b09ad5b},
+ {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35, 0xf8d511fb},
+ {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801, 0x5ad832cc},
+ {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2, 0x1214d196},
+ {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d, 0x5747218a},
+ {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c, 0xde8f14de},
+ {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba, 0x3563b7b9},
+ {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5, 0x071475d0},
+ {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b, 0x54c79d60},
+ {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178, 0x4c53eee6},
+ {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3, 0x10137a3c},
+ {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605, 0xaa9d6c73},
+ {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1, 0xb63d23e7},
+ {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9, 0x7f53e9cf},
+ {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78, 0x13c1cd83},
+ {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9, 0x49ff5867},
+ {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd, 0x8467f211},
+ {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab, 0x3f9683b2},
+ {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb, 0x76a3f874},
+ {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77, 0x863b702f},
+ {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da, 0xdc6c58ff},
+ {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39, 0x0622cc95},
+ {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16, 0xe85605cd},
+ {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208, 0x31da5f06},
+ {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e, 0xa1f2e784},
+ {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5, 0xb07cc616},
+ {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892, 0xbf943b6c},
+ {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db, 0x2c01af1c},
+ {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43, 0x0fe5f56d},
+ {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac, 0xf8943b2d},
+ {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7, 0xe4d89272},
+ {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2, 0x7c2f6bbb},
+ {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2, 0xabbf388b},
+ {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640, 0x1dca1f4e},
+ {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f, 0x5c170e23},
+ {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99, 0xc0e9d672},
+ {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7, 0xc18bdc86},
+ {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499, 0xa874fcdd},
+ {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a, 0x9dc0bb48},
+};
+
+#include <linux/time.h>
+
+static int __init crc32c_test(void)
+{
+ int i;
+ int errors = 0;
+ int bytes = 0;
+ u64 nsec;
+ unsigned long flags;
+
+ /* keep static to prevent cache warming code from
+ * getting eliminated by the compiler */
+ static u32 crc;
+
+ /* pre-warm the cache */
+ for (i = 0; i < 100; i++) {
+ bytes += 2*test[i].length;
+
+ crc ^= __crc32c_le(test[i].crc, test_buf +
+ test[i].start, test[i].length);
+ }
+
+ /* reduce OS noise */
+ local_irq_save(flags);
+ local_irq_disable();
+
+ nsec = ktime_get_ns();
+ for (i = 0; i < 100; i++) {
+ if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf +
+ test[i].start, test[i].length))
+ errors++;
+ }
+ nsec = ktime_get_ns() - nsec;
+
+ local_irq_restore(flags);
+ local_irq_enable();
+
+ pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
+
+ if (errors)
+ pr_warn("crc32c: %d self tests failed\n", errors);
+ else {
+ pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
+ bytes, nsec);
+ }
+
+ return 0;
+}
+
+static int __init crc32c_combine_test(void)
+{
+ int i, j;
+ int errors = 0, runs = 0;
+
+ for (i = 0; i < 10; i++) {
+ u32 crc_full;
+
+ crc_full = __crc32c_le(test[i].crc, test_buf + test[i].start,
+ test[i].length);
+ for (j = 0; j <= test[i].length; ++j) {
+ u32 crc1, crc2;
+ u32 len1 = j, len2 = test[i].length - j;
+
+ crc1 = __crc32c_le(test[i].crc, test_buf +
+ test[i].start, len1);
+ crc2 = __crc32c_le(0, test_buf + test[i].start +
+ len1, len2);
+
+ if (!(crc_full == __crc32c_le_combine(crc1, crc2, len2) &&
+ crc_full == test[i].crc32c_le))
+ errors++;
+ runs++;
+ cond_resched();
+ }
+ }
+
+ if (errors)
+ pr_warn("crc32c_combine: %d/%d self tests failed\n", errors, runs);
+ else
+ pr_info("crc32c_combine: %d self tests passed\n", runs);
+
+ return 0;
+}
+
+static int __init crc32_test(void)
+{
+ int i;
+ int errors = 0;
+ int bytes = 0;
+ u64 nsec;
+ unsigned long flags;
+
+ /* keep static to prevent cache warming code from
+ * getting eliminated by the compiler */
+ static u32 crc;
+
+ /* pre-warm the cache */
+ for (i = 0; i < 100; i++) {
+ bytes += 2*test[i].length;
+
+ crc ^= crc32_le(test[i].crc, test_buf +
+ test[i].start, test[i].length);
+
+ crc ^= crc32_be(test[i].crc, test_buf +
+ test[i].start, test[i].length);
+ }
+
+ /* reduce OS noise */
+ local_irq_save(flags);
+ local_irq_disable();
+
+ nsec = ktime_get_ns();
+ for (i = 0; i < 100; i++) {
+ if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
+ test[i].start, test[i].length))
+ errors++;
+
+ if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
+ test[i].start, test[i].length))
+ errors++;
+ }
+ nsec = ktime_get_ns() - nsec;
+
+ local_irq_restore(flags);
+ local_irq_enable();
+
+ pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
+ CRC_LE_BITS, CRC_BE_BITS);
+
+ if (errors)
+ pr_warn("crc32: %d self tests failed\n", errors);
+ else {
+ pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
+ bytes, nsec);
+ }
+
+ return 0;
+}
+
+static int __init crc32_combine_test(void)
+{
+ int i, j;
+ int errors = 0, runs = 0;
+
+ for (i = 0; i < 10; i++) {
+ u32 crc_full;
+
+ crc_full = crc32_le(test[i].crc, test_buf + test[i].start,
+ test[i].length);
+ for (j = 0; j <= test[i].length; ++j) {
+ u32 crc1, crc2;
+ u32 len1 = j, len2 = test[i].length - j;
+
+ crc1 = crc32_le(test[i].crc, test_buf +
+ test[i].start, len1);
+ crc2 = crc32_le(0, test_buf + test[i].start +
+ len1, len2);
+
+ if (!(crc_full == crc32_le_combine(crc1, crc2, len2) &&
+ crc_full == test[i].crc_le))
+ errors++;
+ runs++;
+ cond_resched();
+ }
+ }
+
+ if (errors)
+ pr_warn("crc32_combine: %d/%d self tests failed\n", errors, runs);
+ else
+ pr_info("crc32_combine: %d self tests passed\n", runs);
+
+ return 0;
+}
+
+static int __init crc32test_init(void)
+{
+ crc32_test();
+ crc32c_test();
+
+ crc32_combine_test();
+ crc32c_combine_test();
+
+ return 0;
+}
+
+static void __exit crc32_exit(void)
+{
+}
+
+module_init(crc32test_init);
+module_exit(crc32_exit);
+
+MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
+MODULE_DESCRIPTION("CRC32 selftest");
+MODULE_LICENSE("GPL");
diff --git a/lib/decompress_unlz4.c b/lib/decompress_unlz4.c
index 036fc882cd72..1b0baf3008ea 100644
--- a/lib/decompress_unlz4.c
+++ b/lib/decompress_unlz4.c
@@ -72,7 +72,7 @@ STATIC inline int INIT unlz4(u8 *input, long in_len,
error("NULL input pointer and missing fill function");
goto exit_1;
} else {
- inp = large_malloc(lz4_compressbound(uncomp_chunksize));
+ inp = large_malloc(LZ4_compressBound(uncomp_chunksize));
if (!inp) {
error("Could not allocate input buffer");
goto exit_1;
@@ -136,7 +136,7 @@ STATIC inline int INIT unlz4(u8 *input, long in_len,
inp += 4;
size -= 4;
} else {
- if (chunksize > lz4_compressbound(uncomp_chunksize)) {
+ if (chunksize > LZ4_compressBound(uncomp_chunksize)) {
error("chunk length is longer than allocated");
goto exit_2;
}
@@ -152,11 +152,14 @@ STATIC inline int INIT unlz4(u8 *input, long in_len,
out_len -= dest_len;
} else
dest_len = out_len;
- ret = lz4_decompress(inp, &chunksize, outp, dest_len);
+
+ ret = LZ4_decompress_fast(inp, outp, dest_len);
+ chunksize = ret;
#else
dest_len = uncomp_chunksize;
- ret = lz4_decompress_unknownoutputsize(inp, chunksize, outp,
- &dest_len);
+
+ ret = LZ4_decompress_safe(inp, outp, chunksize, dest_len);
+ dest_len = ret;
#endif
if (ret < 0) {
error("Decoding failed");
diff --git a/lib/find_bit.c b/lib/find_bit.c
index 18072ea9c20e..6ed74f78380c 100644
--- a/lib/find_bit.c
+++ b/lib/find_bit.c
@@ -33,7 +33,7 @@ static unsigned long _find_next_bit(const unsigned long *addr,
{
unsigned long tmp;
- if (!nbits || start >= nbits)
+ if (unlikely(start >= nbits))
return nbits;
tmp = addr[start / BITS_PER_LONG] ^ invert;
@@ -151,7 +151,7 @@ static unsigned long _find_next_bit_le(const unsigned long *addr,
{
unsigned long tmp;
- if (!nbits || start >= nbits)
+ if (unlikely(start >= nbits))
return nbits;
tmp = addr[start / BITS_PER_LONG] ^ invert;
diff --git a/lib/glob.c b/lib/glob.c
index 500fc80d23e1..0ba3ea86b546 100644
--- a/lib/glob.c
+++ b/lib/glob.c
@@ -121,167 +121,3 @@ backtrack:
}
}
EXPORT_SYMBOL(glob_match);
-
-
-#ifdef CONFIG_GLOB_SELFTEST
-
-#include <linux/printk.h>
-#include <linux/moduleparam.h>
-
-/* Boot with "glob.verbose=1" to show successful tests, too */
-static bool verbose = false;
-module_param(verbose, bool, 0);
-
-struct glob_test {
- char const *pat, *str;
- bool expected;
-};
-
-static bool __pure __init test(char const *pat, char const *str, bool expected)
-{
- bool match = glob_match(pat, str);
- bool success = match == expected;
-
- /* Can't get string literals into a particular section, so... */
- static char const msg_error[] __initconst =
- KERN_ERR "glob: \"%s\" vs. \"%s\": %s *** ERROR ***\n";
- static char const msg_ok[] __initconst =
- KERN_DEBUG "glob: \"%s\" vs. \"%s\": %s OK\n";
- static char const mismatch[] __initconst = "mismatch";
- char const *message;
-
- if (!success)
- message = msg_error;
- else if (verbose)
- message = msg_ok;
- else
- return success;
-
- printk(message, pat, str, mismatch + 3*match);
- return success;
-}
-
-/*
- * The tests are all jammed together in one array to make it simpler
- * to place that array in the .init.rodata section. The obvious
- * "array of structures containing char *" has no way to force the
- * pointed-to strings to be in a particular section.
- *
- * Anyway, a test consists of:
- * 1. Expected glob_match result: '1' or '0'.
- * 2. Pattern to match: null-terminated string
- * 3. String to match against: null-terminated string
- *
- * The list of tests is terminated with a final '\0' instead of
- * a glob_match result character.
- */
-static char const glob_tests[] __initconst =
- /* Some basic tests */
- "1" "a\0" "a\0"
- "0" "a\0" "b\0"
- "0" "a\0" "aa\0"
- "0" "a\0" "\0"
- "1" "\0" "\0"
- "0" "\0" "a\0"
- /* Simple character class tests */
- "1" "[a]\0" "a\0"
- "0" "[a]\0" "b\0"
- "0" "[!a]\0" "a\0"
- "1" "[!a]\0" "b\0"
- "1" "[ab]\0" "a\0"
- "1" "[ab]\0" "b\0"
- "0" "[ab]\0" "c\0"
- "1" "[!ab]\0" "c\0"
- "1" "[a-c]\0" "b\0"
- "0" "[a-c]\0" "d\0"
- /* Corner cases in character class parsing */
- "1" "[a-c-e-g]\0" "-\0"
- "0" "[a-c-e-g]\0" "d\0"
- "1" "[a-c-e-g]\0" "f\0"
- "1" "[]a-ceg-ik[]\0" "a\0"
- "1" "[]a-ceg-ik[]\0" "]\0"
- "1" "[]a-ceg-ik[]\0" "[\0"
- "1" "[]a-ceg-ik[]\0" "h\0"
- "0" "[]a-ceg-ik[]\0" "f\0"
- "0" "[!]a-ceg-ik[]\0" "h\0"
- "0" "[!]a-ceg-ik[]\0" "]\0"
- "1" "[!]a-ceg-ik[]\0" "f\0"
- /* Simple wild cards */
- "1" "?\0" "a\0"
- "0" "?\0" "aa\0"
- "0" "??\0" "a\0"
- "1" "?x?\0" "axb\0"
- "0" "?x?\0" "abx\0"
- "0" "?x?\0" "xab\0"
- /* Asterisk wild cards (backtracking) */
- "0" "*??\0" "a\0"
- "1" "*??\0" "ab\0"
- "1" "*??\0" "abc\0"
- "1" "*??\0" "abcd\0"
- "0" "??*\0" "a\0"
- "1" "??*\0" "ab\0"
- "1" "??*\0" "abc\0"
- "1" "??*\0" "abcd\0"
- "0" "?*?\0" "a\0"
- "1" "?*?\0" "ab\0"
- "1" "?*?\0" "abc\0"
- "1" "?*?\0" "abcd\0"
- "1" "*b\0" "b\0"
- "1" "*b\0" "ab\0"
- "0" "*b\0" "ba\0"
- "1" "*b\0" "bb\0"
- "1" "*b\0" "abb\0"
- "1" "*b\0" "bab\0"
- "1" "*bc\0" "abbc\0"
- "1" "*bc\0" "bc\0"
- "1" "*bc\0" "bbc\0"
- "1" "*bc\0" "bcbc\0"
- /* Multiple asterisks (complex backtracking) */
- "1" "*ac*\0" "abacadaeafag\0"
- "1" "*ac*ae*ag*\0" "abacadaeafag\0"
- "1" "*a*b*[bc]*[ef]*g*\0" "abacadaeafag\0"
- "0" "*a*b*[ef]*[cd]*g*\0" "abacadaeafag\0"
- "1" "*abcd*\0" "abcabcabcabcdefg\0"
- "1" "*ab*cd*\0" "abcabcabcabcdefg\0"
- "1" "*abcd*abcdef*\0" "abcabcdabcdeabcdefg\0"
- "0" "*abcd*\0" "abcabcabcabcefg\0"
- "0" "*ab*cd*\0" "abcabcabcabcefg\0";
-
-static int __init glob_init(void)
-{
- unsigned successes = 0;
- unsigned n = 0;
- char const *p = glob_tests;
- static char const message[] __initconst =
- KERN_INFO "glob: %u self-tests passed, %u failed\n";
-
- /*
- * Tests are jammed together in a string. The first byte is '1'
- * or '0' to indicate the expected outcome, or '\0' to indicate the
- * end of the tests. Then come two null-terminated strings: the
- * pattern and the string to match it against.
- */
- while (*p) {
- bool expected = *p++ & 1;
- char const *pat = p;
-
- p += strlen(p) + 1;
- successes += test(pat, p, expected);
- p += strlen(p) + 1;
- n++;
- }
-
- n -= successes;
- printk(message, successes, n);
-
- /* What's the errno for "kernel bug detected"? Guess... */
- return n ? -ECANCELED : 0;
-}
-
-/* We need a dummy exit function to allow unload */
-static void __exit glob_fini(void) { }
-
-module_init(glob_init);
-module_exit(glob_fini);
-
-#endif /* CONFIG_GLOB_SELFTEST */
diff --git a/lib/globtest.c b/lib/globtest.c
new file mode 100644
index 000000000000..d8e97d43b905
--- /dev/null
+++ b/lib/globtest.c
@@ -0,0 +1,167 @@
+/*
+ * Extracted fronm glob.c
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/glob.h>
+#include <linux/printk.h>
+
+/* Boot with "glob.verbose=1" to show successful tests, too */
+static bool verbose = false;
+module_param(verbose, bool, 0);
+
+struct glob_test {
+ char const *pat, *str;
+ bool expected;
+};
+
+static bool __pure __init test(char const *pat, char const *str, bool expected)
+{
+ bool match = glob_match(pat, str);
+ bool success = match == expected;
+
+ /* Can't get string literals into a particular section, so... */
+ static char const msg_error[] __initconst =
+ KERN_ERR "glob: \"%s\" vs. \"%s\": %s *** ERROR ***\n";
+ static char const msg_ok[] __initconst =
+ KERN_DEBUG "glob: \"%s\" vs. \"%s\": %s OK\n";
+ static char const mismatch[] __initconst = "mismatch";
+ char const *message;
+
+ if (!success)
+ message = msg_error;
+ else if (verbose)
+ message = msg_ok;
+ else
+ return success;
+
+ printk(message, pat, str, mismatch + 3*match);
+ return success;
+}
+
+/*
+ * The tests are all jammed together in one array to make it simpler
+ * to place that array in the .init.rodata section. The obvious
+ * "array of structures containing char *" has no way to force the
+ * pointed-to strings to be in a particular section.
+ *
+ * Anyway, a test consists of:
+ * 1. Expected glob_match result: '1' or '0'.
+ * 2. Pattern to match: null-terminated string
+ * 3. String to match against: null-terminated string
+ *
+ * The list of tests is terminated with a final '\0' instead of
+ * a glob_match result character.
+ */
+static char const glob_tests[] __initconst =
+ /* Some basic tests */
+ "1" "a\0" "a\0"
+ "0" "a\0" "b\0"
+ "0" "a\0" "aa\0"
+ "0" "a\0" "\0"
+ "1" "\0" "\0"
+ "0" "\0" "a\0"
+ /* Simple character class tests */
+ "1" "[a]\0" "a\0"
+ "0" "[a]\0" "b\0"
+ "0" "[!a]\0" "a\0"
+ "1" "[!a]\0" "b\0"
+ "1" "[ab]\0" "a\0"
+ "1" "[ab]\0" "b\0"
+ "0" "[ab]\0" "c\0"
+ "1" "[!ab]\0" "c\0"
+ "1" "[a-c]\0" "b\0"
+ "0" "[a-c]\0" "d\0"
+ /* Corner cases in character class parsing */
+ "1" "[a-c-e-g]\0" "-\0"
+ "0" "[a-c-e-g]\0" "d\0"
+ "1" "[a-c-e-g]\0" "f\0"
+ "1" "[]a-ceg-ik[]\0" "a\0"
+ "1" "[]a-ceg-ik[]\0" "]\0"
+ "1" "[]a-ceg-ik[]\0" "[\0"
+ "1" "[]a-ceg-ik[]\0" "h\0"
+ "0" "[]a-ceg-ik[]\0" "f\0"
+ "0" "[!]a-ceg-ik[]\0" "h\0"
+ "0" "[!]a-ceg-ik[]\0" "]\0"
+ "1" "[!]a-ceg-ik[]\0" "f\0"
+ /* Simple wild cards */
+ "1" "?\0" "a\0"
+ "0" "?\0" "aa\0"
+ "0" "??\0" "a\0"
+ "1" "?x?\0" "axb\0"
+ "0" "?x?\0" "abx\0"
+ "0" "?x?\0" "xab\0"
+ /* Asterisk wild cards (backtracking) */
+ "0" "*??\0" "a\0"
+ "1" "*??\0" "ab\0"
+ "1" "*??\0" "abc\0"
+ "1" "*??\0" "abcd\0"
+ "0" "??*\0" "a\0"
+ "1" "??*\0" "ab\0"
+ "1" "??*\0" "abc\0"
+ "1" "??*\0" "abcd\0"
+ "0" "?*?\0" "a\0"
+ "1" "?*?\0" "ab\0"
+ "1" "?*?\0" "abc\0"
+ "1" "?*?\0" "abcd\0"
+ "1" "*b\0" "b\0"
+ "1" "*b\0" "ab\0"
+ "0" "*b\0" "ba\0"
+ "1" "*b\0" "bb\0"
+ "1" "*b\0" "abb\0"
+ "1" "*b\0" "bab\0"
+ "1" "*bc\0" "abbc\0"
+ "1" "*bc\0" "bc\0"
+ "1" "*bc\0" "bbc\0"
+ "1" "*bc\0" "bcbc\0"
+ /* Multiple asterisks (complex backtracking) */
+ "1" "*ac*\0" "abacadaeafag\0"
+ "1" "*ac*ae*ag*\0" "abacadaeafag\0"
+ "1" "*a*b*[bc]*[ef]*g*\0" "abacadaeafag\0"
+ "0" "*a*b*[ef]*[cd]*g*\0" "abacadaeafag\0"
+ "1" "*abcd*\0" "abcabcabcabcdefg\0"
+ "1" "*ab*cd*\0" "abcabcabcabcdefg\0"
+ "1" "*abcd*abcdef*\0" "abcabcdabcdeabcdefg\0"
+ "0" "*abcd*\0" "abcabcabcabcefg\0"
+ "0" "*ab*cd*\0" "abcabcabcabcefg\0";
+
+static int __init glob_init(void)
+{
+ unsigned successes = 0;
+ unsigned n = 0;
+ char const *p = glob_tests;
+ static char const message[] __initconst =
+ KERN_INFO "glob: %u self-tests passed, %u failed\n";
+
+ /*
+ * Tests are jammed together in a string. The first byte is '1'
+ * or '0' to indicate the expected outcome, or '\0' to indicate the
+ * end of the tests. Then come two null-terminated strings: the
+ * pattern and the string to match it against.
+ */
+ while (*p) {
+ bool expected = *p++ & 1;
+ char const *pat = p;
+
+ p += strlen(p) + 1;
+ successes += test(pat, p, expected);
+ p += strlen(p) + 1;
+ n++;
+ }
+
+ n -= successes;
+ printk(message, successes, n);
+
+ /* What's the errno for "kernel bug detected"? Guess... */
+ return n ? -ECANCELED : 0;
+}
+
+/* We need a dummy exit function to allow unload */
+static void __exit glob_fini(void) { }
+
+module_init(glob_init);
+module_exit(glob_fini);
+
+MODULE_DESCRIPTION("glob(7) matching tests");
+MODULE_LICENSE("Dual MIT/GPL");
diff --git a/lib/list_debug.c b/lib/list_debug.c
index 7f7bfa55eb6d..a34db8d27667 100644
--- a/lib/list_debug.c
+++ b/lib/list_debug.c
@@ -20,15 +20,16 @@
bool __list_add_valid(struct list_head *new, struct list_head *prev,
struct list_head *next)
{
- CHECK_DATA_CORRUPTION(next->prev != prev,
- "list_add corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
- prev, next->prev, next);
- CHECK_DATA_CORRUPTION(prev->next != next,
- "list_add corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
- next, prev->next, prev);
- CHECK_DATA_CORRUPTION(new == prev || new == next,
- "list_add double add: new=%p, prev=%p, next=%p.\n",
- new, prev, next);
+ if (CHECK_DATA_CORRUPTION(next->prev != prev,
+ "list_add corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
+ prev, next->prev, next) ||
+ CHECK_DATA_CORRUPTION(prev->next != next,
+ "list_add corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
+ next, prev->next, prev) ||
+ CHECK_DATA_CORRUPTION(new == prev || new == next,
+ "list_add double add: new=%p, prev=%p, next=%p.\n",
+ new, prev, next))
+ return false;
return true;
}
@@ -41,18 +42,20 @@ bool __list_del_entry_valid(struct list_head *entry)
prev = entry->prev;
next = entry->next;
- CHECK_DATA_CORRUPTION(next == LIST_POISON1,
- "list_del corruption, %p->next is LIST_POISON1 (%p)\n",
- entry, LIST_POISON1);
- CHECK_DATA_CORRUPTION(prev == LIST_POISON2,
- "list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
- entry, LIST_POISON2);
- CHECK_DATA_CORRUPTION(prev->next != entry,
- "list_del corruption. prev->next should be %p, but was %p\n",
- entry, prev->next);
- CHECK_DATA_CORRUPTION(next->prev != entry,
- "list_del corruption. next->prev should be %p, but was %p\n",
- entry, next->prev);
+ if (CHECK_DATA_CORRUPTION(next == LIST_POISON1,
+ "list_del corruption, %p->next is LIST_POISON1 (%p)\n",
+ entry, LIST_POISON1) ||
+ CHECK_DATA_CORRUPTION(prev == LIST_POISON2,
+ "list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
+ entry, LIST_POISON2) ||
+ CHECK_DATA_CORRUPTION(prev->next != entry,
+ "list_del corruption. prev->next should be %p, but was %p\n",
+ entry, prev->next) ||
+ CHECK_DATA_CORRUPTION(next->prev != entry,
+ "list_del corruption. next->prev should be %p, but was %p\n",
+ entry, next->prev))
+ return false;
+
return true;
}
diff --git a/lib/lz4/Makefile b/lib/lz4/Makefile
index 8085d04e9309..f7b113271d13 100644
--- a/lib/lz4/Makefile
+++ b/lib/lz4/Makefile
@@ -1,3 +1,5 @@
+ccflags-y += -O3
+
obj-$(CONFIG_LZ4_COMPRESS) += lz4_compress.o
obj-$(CONFIG_LZ4HC_COMPRESS) += lz4hc_compress.o
obj-$(CONFIG_LZ4_DECOMPRESS) += lz4_decompress.o
diff --git a/lib/lz4/lz4_compress.c b/lib/lz4/lz4_compress.c
index 28321d8f75ef..cc7b6d4cc7c7 100644
--- a/lib/lz4/lz4_compress.c
+++ b/lib/lz4/lz4_compress.c
@@ -1,19 +1,16 @@
/*
* LZ4 - Fast LZ compression algorithm
- * Copyright (C) 2011-2012, Yann Collet.
- * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
-
+ * Copyright (C) 2011 - 2016, Yann Collet.
+ * BSD 2 - Clause License (http://www.opensource.org/licenses/bsd - license.php)
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
- *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -25,419 +22,919 @@
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
* You can contact the author at :
- * - LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- * - LZ4 source repository : http://code.google.com/p/lz4/
+ * - LZ4 homepage : http://www.lz4.org
+ * - LZ4 source repository : https://github.com/lz4/lz4
*
- * Changed for kernel use by:
- * Chanho Min <chanho.min@lge.com>
+ * Changed for kernel usage by:
+ * Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
*/
+/*-************************************
+ * Dependencies
+ **************************************/
+#include <linux/lz4.h>
+#include "lz4defs.h"
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/lz4.h>
#include <asm/unaligned.h>
-#include "lz4defs.h"
-/*
- * LZ4_compressCtx :
- * -----------------
- * Compress 'isize' bytes from 'source' into an output buffer 'dest' of
- * maximum size 'maxOutputSize'. * If it cannot achieve it, compression
- * will stop, and result of the function will be zero.
- * return : the number of bytes written in buffer 'dest', or 0 if the
- * compression fails
- */
-static inline int lz4_compressctx(void *ctx,
- const char *source,
- char *dest,
- int isize,
- int maxoutputsize)
+static const int LZ4_minLength = (MFLIMIT + 1);
+static const int LZ4_64Klimit = ((64 * KB) + (MFLIMIT - 1));
+
+/*-******************************
+ * Compression functions
+ ********************************/
+static FORCE_INLINE U32 LZ4_hash4(
+ U32 sequence,
+ tableType_t const tableType)
{
- HTYPE *hashtable = (HTYPE *)ctx;
- const u8 *ip = (u8 *)source;
-#if LZ4_ARCH64
- const BYTE * const base = ip;
+ if (tableType == byU16)
+ return ((sequence * 2654435761U)
+ >> ((MINMATCH * 8) - (LZ4_HASHLOG + 1)));
+ else
+ return ((sequence * 2654435761U)
+ >> ((MINMATCH * 8) - LZ4_HASHLOG));
+}
+
+static FORCE_INLINE U32 LZ4_hash5(
+ U64 sequence,
+ tableType_t const tableType)
+{
+ const U32 hashLog = (tableType == byU16)
+ ? LZ4_HASHLOG + 1
+ : LZ4_HASHLOG;
+
+#if LZ4_LITTLE_ENDIAN
+ static const U64 prime5bytes = 889523592379ULL;
+
+ return (U32)(((sequence << 24) * prime5bytes) >> (64 - hashLog));
#else
- const int base = 0;
+ static const U64 prime8bytes = 11400714785074694791ULL;
+
+ return (U32)(((sequence >> 24) * prime8bytes) >> (64 - hashLog));
#endif
- const u8 *anchor = ip;
- const u8 *const iend = ip + isize;
- const u8 *const mflimit = iend - MFLIMIT;
- #define MATCHLIMIT (iend - LASTLITERALS)
-
- u8 *op = (u8 *) dest;
- u8 *const oend = op + maxoutputsize;
- int length;
- const int skipstrength = SKIPSTRENGTH;
- u32 forwardh;
- int lastrun;
-
- /* Init */
- if (isize < MINLENGTH)
- goto _last_literals;
+}
+
+static FORCE_INLINE U32 LZ4_hashPosition(
+ const void *p,
+ tableType_t const tableType)
+{
+#if LZ4_ARCH64
+ if (tableType == byU32)
+ return LZ4_hash5(LZ4_read_ARCH(p), tableType);
+#endif
+
+ return LZ4_hash4(LZ4_read32(p), tableType);
+}
+
+static void LZ4_putPositionOnHash(
+ const BYTE *p,
+ U32 h,
+ void *tableBase,
+ tableType_t const tableType,
+ const BYTE *srcBase)
+{
+ switch (tableType) {
+ case byPtr:
+ {
+ const BYTE **hashTable = (const BYTE **)tableBase;
+
+ hashTable[h] = p;
+ return;
+ }
+ case byU32:
+ {
+ U32 *hashTable = (U32 *) tableBase;
+
+ hashTable[h] = (U32)(p - srcBase);
+ return;
+ }
+ case byU16:
+ {
+ U16 *hashTable = (U16 *) tableBase;
+
+ hashTable[h] = (U16)(p - srcBase);
+ return;
+ }
+ }
+}
+
+static FORCE_INLINE void LZ4_putPosition(
+ const BYTE *p,
+ void *tableBase,
+ tableType_t tableType,
+ const BYTE *srcBase)
+{
+ U32 const h = LZ4_hashPosition(p, tableType);
+
+ LZ4_putPositionOnHash(p, h, tableBase, tableType, srcBase);
+}
+
+static const BYTE *LZ4_getPositionOnHash(
+ U32 h,
+ void *tableBase,
+ tableType_t tableType,
+ const BYTE *srcBase)
+{
+ if (tableType == byPtr) {
+ const BYTE **hashTable = (const BYTE **) tableBase;
+
+ return hashTable[h];
+ }
+
+ if (tableType == byU32) {
+ const U32 * const hashTable = (U32 *) tableBase;
+
+ return hashTable[h] + srcBase;
+ }
+
+ {
+ /* default, to ensure a return */
+ const U16 * const hashTable = (U16 *) tableBase;
+
+ return hashTable[h] + srcBase;
+ }
+}
+
+static FORCE_INLINE const BYTE *LZ4_getPosition(
+ const BYTE *p,
+ void *tableBase,
+ tableType_t tableType,
+ const BYTE *srcBase)
+{
+ U32 const h = LZ4_hashPosition(p, tableType);
+
+ return LZ4_getPositionOnHash(h, tableBase, tableType, srcBase);
+}
- memset((void *)hashtable, 0, LZ4_MEM_COMPRESS);
+
+/*
+ * LZ4_compress_generic() :
+ * inlined, to ensure branches are decided at compilation time
+ */
+static FORCE_INLINE int LZ4_compress_generic(
+ LZ4_stream_t_internal * const dictPtr,
+ const char * const source,
+ char * const dest,
+ const int inputSize,
+ const int maxOutputSize,
+ const limitedOutput_directive outputLimited,
+ const tableType_t tableType,
+ const dict_directive dict,
+ const dictIssue_directive dictIssue,
+ const U32 acceleration)
+{
+ const BYTE *ip = (const BYTE *) source;
+ const BYTE *base;
+ const BYTE *lowLimit;
+ const BYTE * const lowRefLimit = ip - dictPtr->dictSize;
+ const BYTE * const dictionary = dictPtr->dictionary;
+ const BYTE * const dictEnd = dictionary + dictPtr->dictSize;
+ const size_t dictDelta = dictEnd - (const BYTE *)source;
+ const BYTE *anchor = (const BYTE *) source;
+ const BYTE * const iend = ip + inputSize;
+ const BYTE * const mflimit = iend - MFLIMIT;
+ const BYTE * const matchlimit = iend - LASTLITERALS;
+
+ BYTE *op = (BYTE *) dest;
+ BYTE * const olimit = op + maxOutputSize;
+
+ U32 forwardH;
+ size_t refDelta = 0;
+
+ /* Init conditions */
+ if ((U32)inputSize > (U32)LZ4_MAX_INPUT_SIZE) {
+ /* Unsupported inputSize, too large (or negative) */
+ return 0;
+ }
+
+ switch (dict) {
+ case noDict:
+ default:
+ base = (const BYTE *)source;
+ lowLimit = (const BYTE *)source;
+ break;
+ case withPrefix64k:
+ base = (const BYTE *)source - dictPtr->currentOffset;
+ lowLimit = (const BYTE *)source - dictPtr->dictSize;
+ break;
+ case usingExtDict:
+ base = (const BYTE *)source - dictPtr->currentOffset;
+ lowLimit = (const BYTE *)source;
+ break;
+ }
+
+ if ((tableType == byU16)
+ && (inputSize >= LZ4_64Klimit)) {
+ /* Size too large (not within 64K limit) */
+ return 0;
+ }
+
+ if (inputSize < LZ4_minLength) {
+ /* Input too small, no compression (all literals) */
+ goto _last_literals;
+ }
/* First Byte */
- hashtable[LZ4_HASH_VALUE(ip)] = ip - base;
+ LZ4_putPosition(ip, dictPtr->hashTable, tableType, base);
ip++;
- forwardh = LZ4_HASH_VALUE(ip);
+ forwardH = LZ4_hashPosition(ip, tableType);
/* Main Loop */
- for (;;) {
- int findmatchattempts = (1U << skipstrength) + 3;
- const u8 *forwardip = ip;
- const u8 *ref;
- u8 *token;
+ for ( ; ; ) {
+ const BYTE *match;
+ BYTE *token;
/* Find a match */
- do {
- u32 h = forwardh;
- int step = findmatchattempts++ >> skipstrength;
- ip = forwardip;
- forwardip = ip + step;
-
- if (unlikely(forwardip > mflimit))
- goto _last_literals;
-
- forwardh = LZ4_HASH_VALUE(forwardip);
- ref = base + hashtable[h];
- hashtable[h] = ip - base;
- } while ((ref < ip - MAX_DISTANCE) || (A32(ref) != A32(ip)));
+ {
+ const BYTE *forwardIp = ip;
+ unsigned int step = 1;
+ unsigned int searchMatchNb = acceleration << LZ4_SKIPTRIGGER;
+
+ do {
+ U32 const h = forwardH;
+
+ ip = forwardIp;
+ forwardIp += step;
+ step = (searchMatchNb++ >> LZ4_SKIPTRIGGER);
+
+ if (unlikely(forwardIp > mflimit))
+ goto _last_literals;
+
+ match = LZ4_getPositionOnHash(h,
+ dictPtr->hashTable,
+ tableType, base);
+
+ if (dict == usingExtDict) {
+ if (match < (const BYTE *)source) {
+ refDelta = dictDelta;
+ lowLimit = dictionary;
+ } else {
+ refDelta = 0;
+ lowLimit = (const BYTE *)source;
+ } }
+
+ forwardH = LZ4_hashPosition(forwardIp,
+ tableType);
+
+ LZ4_putPositionOnHash(ip, h, dictPtr->hashTable,
+ tableType, base);
+ } while (((dictIssue == dictSmall)
+ ? (match < lowRefLimit)
+ : 0)
+ || ((tableType == byU16)
+ ? 0
+ : (match + MAX_DISTANCE < ip))
+ || (LZ4_read32(match + refDelta)
+ != LZ4_read32(ip)));
+ }
/* Catch up */
- while ((ip > anchor) && (ref > (u8 *)source) &&
- unlikely(ip[-1] == ref[-1])) {
+ while (((ip > anchor) & (match + refDelta > lowLimit))
+ && (unlikely(ip[-1] == match[refDelta - 1]))) {
ip--;
- ref--;
+ match--;
}
- /* Encode Literal length */
- length = (int)(ip - anchor);
- token = op++;
- /* check output limit */
- if (unlikely(op + length + (2 + 1 + LASTLITERALS) +
- (length >> 8) > oend))
- return 0;
+ /* Encode Literals */
+ {
+ unsigned const int litLength = (unsigned int)(ip - anchor);
- if (length >= (int)RUN_MASK) {
- int len;
- *token = (RUN_MASK << ML_BITS);
- len = length - RUN_MASK;
- for (; len > 254 ; len -= 255)
- *op++ = 255;
- *op++ = (u8)len;
- } else
- *token = (length << ML_BITS);
+ token = op++;
+
+ if ((outputLimited) &&
+ /* Check output buffer overflow */
+ (unlikely(op + litLength +
+ (2 + 1 + LASTLITERALS) +
+ (litLength / 255) > olimit)))
+ return 0;
+
+ if (litLength >= RUN_MASK) {
+ int len = (int)litLength - RUN_MASK;
+
+ *token = (RUN_MASK << ML_BITS);
+
+ for (; len >= 255; len -= 255)
+ *op++ = 255;
+ *op++ = (BYTE)len;
+ } else
+ *token = (BYTE)(litLength << ML_BITS);
+
+ /* Copy Literals */
+ LZ4_wildCopy(op, anchor, op + litLength);
+ op += litLength;
+ }
- /* Copy Literals */
- LZ4_BLINDCOPY(anchor, op, length);
_next_match:
/* Encode Offset */
- LZ4_WRITE_LITTLEENDIAN_16(op, (u16)(ip - ref));
+ LZ4_writeLE16(op, (U16)(ip - match));
+ op += 2;
- /* Start Counting */
- ip += MINMATCH;
- /* MinMatch verified */
- ref += MINMATCH;
- anchor = ip;
- while (likely(ip < MATCHLIMIT - (STEPSIZE - 1))) {
- #if LZ4_ARCH64
- u64 diff = A64(ref) ^ A64(ip);
- #else
- u32 diff = A32(ref) ^ A32(ip);
- #endif
- if (!diff) {
- ip += STEPSIZE;
- ref += STEPSIZE;
- continue;
- }
- ip += LZ4_NBCOMMONBYTES(diff);
- goto _endcount;
- }
- #if LZ4_ARCH64
- if ((ip < (MATCHLIMIT - 3)) && (A32(ref) == A32(ip))) {
- ip += 4;
- ref += 4;
- }
- #endif
- if ((ip < (MATCHLIMIT - 1)) && (A16(ref) == A16(ip))) {
- ip += 2;
- ref += 2;
- }
- if ((ip < MATCHLIMIT) && (*ref == *ip))
- ip++;
-_endcount:
/* Encode MatchLength */
- length = (int)(ip - anchor);
- /* Check output limit */
- if (unlikely(op + (1 + LASTLITERALS) + (length >> 8) > oend))
- return 0;
- if (length >= (int)ML_MASK) {
- *token += ML_MASK;
- length -= ML_MASK;
- for (; length > 509 ; length -= 510) {
- *op++ = 255;
- *op++ = 255;
- }
- if (length > 254) {
- length -= 255;
- *op++ = 255;
+ {
+ unsigned int matchCode;
+
+ if ((dict == usingExtDict)
+ && (lowLimit == dictionary)) {
+ const BYTE *limit;
+
+ match += refDelta;
+ limit = ip + (dictEnd - match);
+
+ if (limit > matchlimit)
+ limit = matchlimit;
+
+ matchCode = LZ4_count(ip + MINMATCH,
+ match + MINMATCH, limit);
+
+ ip += MINMATCH + matchCode;
+
+ if (ip == limit) {
+ unsigned const int more = LZ4_count(ip,
+ (const BYTE *)source,
+ matchlimit);
+
+ matchCode += more;
+ ip += more;
+ }
+ } else {
+ matchCode = LZ4_count(ip + MINMATCH,
+ match + MINMATCH, matchlimit);
+ ip += MINMATCH + matchCode;
}
- *op++ = (u8)length;
- } else
- *token += length;
+
+ if (outputLimited &&
+ /* Check output buffer overflow */
+ (unlikely(op +
+ (1 + LASTLITERALS) +
+ (matchCode >> 8) > olimit)))
+ return 0;
+
+ if (matchCode >= ML_MASK) {
+ *token += ML_MASK;
+ matchCode -= ML_MASK;
+ LZ4_write32(op, 0xFFFFFFFF);
+
+ while (matchCode >= 4 * 255) {
+ op += 4;
+ LZ4_write32(op, 0xFFFFFFFF);
+ matchCode -= 4 * 255;
+ }
+
+ op += matchCode / 255;
+ *op++ = (BYTE)(matchCode % 255);
+ } else
+ *token += (BYTE)(matchCode);
+ }
+
+ anchor = ip;
/* Test end of chunk */
- if (ip > mflimit) {
- anchor = ip;
+ if (ip > mflimit)
break;
- }
/* Fill table */
- hashtable[LZ4_HASH_VALUE(ip-2)] = ip - 2 - base;
+ LZ4_putPosition(ip - 2, dictPtr->hashTable, tableType, base);
/* Test next position */
- ref = base + hashtable[LZ4_HASH_VALUE(ip)];
- hashtable[LZ4_HASH_VALUE(ip)] = ip - base;
- if ((ref > ip - (MAX_DISTANCE + 1)) && (A32(ref) == A32(ip))) {
+ match = LZ4_getPosition(ip, dictPtr->hashTable,
+ tableType, base);
+
+ if (dict == usingExtDict) {
+ if (match < (const BYTE *)source) {
+ refDelta = dictDelta;
+ lowLimit = dictionary;
+ } else {
+ refDelta = 0;
+ lowLimit = (const BYTE *)source;
+ }
+ }
+
+ LZ4_putPosition(ip, dictPtr->hashTable, tableType, base);
+
+ if (((dictIssue == dictSmall) ? (match >= lowRefLimit) : 1)
+ && (match + MAX_DISTANCE >= ip)
+ && (LZ4_read32(match + refDelta) == LZ4_read32(ip))) {
token = op++;
*token = 0;
goto _next_match;
}
/* Prepare next loop */
- anchor = ip++;
- forwardh = LZ4_HASH_VALUE(ip);
+ forwardH = LZ4_hashPosition(++ip, tableType);
}
_last_literals:
/* Encode Last Literals */
- lastrun = (int)(iend - anchor);
- if (((char *)op - dest) + lastrun + 1
- + ((lastrun + 255 - RUN_MASK) / 255) > (u32)maxoutputsize)
- return 0;
+ {
+ size_t const lastRun = (size_t)(iend - anchor);
+
+ if ((outputLimited) &&
+ /* Check output buffer overflow */
+ ((op - (BYTE *)dest) + lastRun + 1 +
+ ((lastRun + 255 - RUN_MASK) / 255) > (U32)maxOutputSize))
+ return 0;
+
+ if (lastRun >= RUN_MASK) {
+ size_t accumulator = lastRun - RUN_MASK;
+ *op++ = RUN_MASK << ML_BITS;
+ for (; accumulator >= 255; accumulator -= 255)
+ *op++ = 255;
+ *op++ = (BYTE) accumulator;
+ } else {
+ *op++ = (BYTE)(lastRun << ML_BITS);
+ }
- if (lastrun >= (int)RUN_MASK) {
- *op++ = (RUN_MASK << ML_BITS);
- lastrun -= RUN_MASK;
- for (; lastrun > 254 ; lastrun -= 255)
- *op++ = 255;
- *op++ = (u8)lastrun;
- } else
- *op++ = (lastrun << ML_BITS);
- memcpy(op, anchor, iend - anchor);
- op += iend - anchor;
+ memcpy(op, anchor, lastRun);
+
+ op += lastRun;
+ }
/* End */
- return (int)(((char *)op) - dest);
+ return (int) (((char *)op) - dest);
}
-static inline int lz4_compress64kctx(void *ctx,
- const char *source,
- char *dest,
- int isize,
- int maxoutputsize)
+static int LZ4_compress_fast_extState(
+ void *state,
+ const char *source,
+ char *dest,
+ int inputSize,
+ int maxOutputSize,
+ int acceleration)
{
- u16 *hashtable = (u16 *)ctx;
- const u8 *ip = (u8 *) source;
- const u8 *anchor = ip;
- const u8 *const base = ip;
- const u8 *const iend = ip + isize;
- const u8 *const mflimit = iend - MFLIMIT;
- #define MATCHLIMIT (iend - LASTLITERALS)
-
- u8 *op = (u8 *) dest;
- u8 *const oend = op + maxoutputsize;
- int len, length;
- const int skipstrength = SKIPSTRENGTH;
- u32 forwardh;
- int lastrun;
-
- /* Init */
- if (isize < MINLENGTH)
- goto _last_literals;
+ LZ4_stream_t_internal *ctx = &((LZ4_stream_t *)state)->internal_donotuse;
+#if LZ4_ARCH64
+ const tableType_t tableType = byU32;
+#else
+ const tableType_t tableType = byPtr;
+#endif
+
+ LZ4_resetStream((LZ4_stream_t *)state);
+
+ if (acceleration < 1)
+ acceleration = LZ4_ACCELERATION_DEFAULT;
+
+ if (maxOutputSize >= LZ4_COMPRESSBOUND(inputSize)) {
+ if (inputSize < LZ4_64Klimit)
+ return LZ4_compress_generic(ctx, source,
+ dest, inputSize, 0,
+ noLimit, byU16, noDict,
+ noDictIssue, acceleration);
+ else
+ return LZ4_compress_generic(ctx, source,
+ dest, inputSize, 0,
+ noLimit, tableType, noDict,
+ noDictIssue, acceleration);
+ } else {
+ if (inputSize < LZ4_64Klimit)
+ return LZ4_compress_generic(ctx, source,
+ dest, inputSize,
+ maxOutputSize, limitedOutput, byU16, noDict,
+ noDictIssue, acceleration);
+ else
+ return LZ4_compress_generic(ctx, source,
+ dest, inputSize,
+ maxOutputSize, limitedOutput, tableType, noDict,
+ noDictIssue, acceleration);
+ }
+}
+
+int LZ4_compress_fast(const char *source, char *dest, int inputSize,
+ int maxOutputSize, int acceleration, void *wrkmem)
+{
+ return LZ4_compress_fast_extState(wrkmem, source, dest, inputSize,
+ maxOutputSize, acceleration);
+}
+EXPORT_SYMBOL(LZ4_compress_fast);
- memset((void *)hashtable, 0, LZ4_MEM_COMPRESS);
+int LZ4_compress_default(const char *source, char *dest, int inputSize,
+ int maxOutputSize, void *wrkmem)
+{
+ return LZ4_compress_fast(source, dest, inputSize,
+ maxOutputSize, LZ4_ACCELERATION_DEFAULT, wrkmem);
+}
+EXPORT_SYMBOL(LZ4_compress_default);
+
+/*-******************************
+ * *_destSize() variant
+ ********************************/
+static int LZ4_compress_destSize_generic(
+ LZ4_stream_t_internal * const ctx,
+ const char * const src,
+ char * const dst,
+ int * const srcSizePtr,
+ const int targetDstSize,
+ const tableType_t tableType)
+{
+ const BYTE *ip = (const BYTE *) src;
+ const BYTE *base = (const BYTE *) src;
+ const BYTE *lowLimit = (const BYTE *) src;
+ const BYTE *anchor = ip;
+ const BYTE * const iend = ip + *srcSizePtr;
+ const BYTE * const mflimit = iend - MFLIMIT;
+ const BYTE * const matchlimit = iend - LASTLITERALS;
+
+ BYTE *op = (BYTE *) dst;
+ BYTE * const oend = op + targetDstSize;
+ BYTE * const oMaxLit = op + targetDstSize - 2 /* offset */
+ - 8 /* because 8 + MINMATCH == MFLIMIT */ - 1 /* token */;
+ BYTE * const oMaxMatch = op + targetDstSize
+ - (LASTLITERALS + 1 /* token */);
+ BYTE * const oMaxSeq = oMaxLit - 1 /* token */;
+
+ U32 forwardH;
+
+ /* Init conditions */
+ /* Impossible to store anything */
+ if (targetDstSize < 1)
+ return 0;
+ /* Unsupported input size, too large (or negative) */
+ if ((U32)*srcSizePtr > (U32)LZ4_MAX_INPUT_SIZE)
+ return 0;
+ /* Size too large (not within 64K limit) */
+ if ((tableType == byU16) && (*srcSizePtr >= LZ4_64Klimit))
+ return 0;
+ /* Input too small, no compression (all literals) */
+ if (*srcSizePtr < LZ4_minLength)
+ goto _last_literals;
/* First Byte */
- ip++;
- forwardh = LZ4_HASH64K_VALUE(ip);
+ *srcSizePtr = 0;
+ LZ4_putPosition(ip, ctx->hashTable, tableType, base);
+ ip++; forwardH = LZ4_hashPosition(ip, tableType);
/* Main Loop */
- for (;;) {
- int findmatchattempts = (1U << skipstrength) + 3;
- const u8 *forwardip = ip;
- const u8 *ref;
- u8 *token;
+ for ( ; ; ) {
+ const BYTE *match;
+ BYTE *token;
/* Find a match */
- do {
- u32 h = forwardh;
- int step = findmatchattempts++ >> skipstrength;
- ip = forwardip;
- forwardip = ip + step;
-
- if (forwardip > mflimit)
- goto _last_literals;
-
- forwardh = LZ4_HASH64K_VALUE(forwardip);
- ref = base + hashtable[h];
- hashtable[h] = (u16)(ip - base);
- } while (A32(ref) != A32(ip));
+ {
+ const BYTE *forwardIp = ip;
+ unsigned int step = 1;
+ unsigned int searchMatchNb = 1 << LZ4_SKIPTRIGGER;
+
+ do {
+ U32 h = forwardH;
+
+ ip = forwardIp;
+ forwardIp += step;
+ step = (searchMatchNb++ >> LZ4_SKIPTRIGGER);
+
+ if (unlikely(forwardIp > mflimit))
+ goto _last_literals;
+
+ match = LZ4_getPositionOnHash(h, ctx->hashTable,
+ tableType, base);
+ forwardH = LZ4_hashPosition(forwardIp,
+ tableType);
+ LZ4_putPositionOnHash(ip, h,
+ ctx->hashTable, tableType,
+ base);
+
+ } while (((tableType == byU16)
+ ? 0
+ : (match + MAX_DISTANCE < ip))
+ || (LZ4_read32(match) != LZ4_read32(ip)));
+ }
/* Catch up */
- while ((ip > anchor) && (ref > (u8 *)source)
- && (ip[-1] == ref[-1])) {
+ while ((ip > anchor)
+ && (match > lowLimit)
+ && (unlikely(ip[-1] == match[-1]))) {
ip--;
- ref--;
+ match--;
}
/* Encode Literal length */
- length = (int)(ip - anchor);
- token = op++;
- /* Check output limit */
- if (unlikely(op + length + (2 + 1 + LASTLITERALS)
- + (length >> 8) > oend))
- return 0;
- if (length >= (int)RUN_MASK) {
- *token = (RUN_MASK << ML_BITS);
- len = length - RUN_MASK;
- for (; len > 254 ; len -= 255)
- *op++ = 255;
- *op++ = (u8)len;
- } else
- *token = (length << ML_BITS);
+ {
+ unsigned int litLength = (unsigned int)(ip - anchor);
- /* Copy Literals */
- LZ4_BLINDCOPY(anchor, op, length);
+ token = op++;
+ if (op + ((litLength + 240) / 255)
+ + litLength > oMaxLit) {
+ /* Not enough space for a last match */
+ op--;
+ goto _last_literals;
+ }
+ if (litLength >= RUN_MASK) {
+ unsigned int len = litLength - RUN_MASK;
+ *token = (RUN_MASK<<ML_BITS);
+ for (; len >= 255; len -= 255)
+ *op++ = 255;
+ *op++ = (BYTE)len;
+ } else
+ *token = (BYTE)(litLength << ML_BITS);
+
+ /* Copy Literals */
+ LZ4_wildCopy(op, anchor, op + litLength);
+ op += litLength;
+ }
_next_match:
/* Encode Offset */
- LZ4_WRITE_LITTLEENDIAN_16(op, (u16)(ip - ref));
+ LZ4_writeLE16(op, (U16)(ip - match)); op += 2;
- /* Start Counting */
- ip += MINMATCH;
- /* MinMatch verified */
- ref += MINMATCH;
- anchor = ip;
+ /* Encode MatchLength */
+ {
+ size_t matchLength = LZ4_count(ip + MINMATCH,
+ match + MINMATCH, matchlimit);
- while (ip < MATCHLIMIT - (STEPSIZE - 1)) {
- #if LZ4_ARCH64
- u64 diff = A64(ref) ^ A64(ip);
- #else
- u32 diff = A32(ref) ^ A32(ip);
- #endif
-
- if (!diff) {
- ip += STEPSIZE;
- ref += STEPSIZE;
- continue;
+ if (op + ((matchLength + 240)/255) > oMaxMatch) {
+ /* Match description too long : reduce it */
+ matchLength = (15 - 1) + (oMaxMatch - op) * 255;
}
- ip += LZ4_NBCOMMONBYTES(diff);
- goto _endcount;
- }
- #if LZ4_ARCH64
- if ((ip < (MATCHLIMIT - 3)) && (A32(ref) == A32(ip))) {
- ip += 4;
- ref += 4;
+ ip += MINMATCH + matchLength;
+
+ if (matchLength >= ML_MASK) {
+ *token += ML_MASK;
+ matchLength -= ML_MASK;
+ while (matchLength >= 255) {
+ matchLength -= 255;
+ *op++ = 255;
+ }
+ *op++ = (BYTE)matchLength;
+ } else
+ *token += (BYTE)(matchLength);
}
- #endif
- if ((ip < (MATCHLIMIT - 1)) && (A16(ref) == A16(ip))) {
- ip += 2;
- ref += 2;
- }
- if ((ip < MATCHLIMIT) && (*ref == *ip))
- ip++;
-_endcount:
- /* Encode MatchLength */
- len = (int)(ip - anchor);
- /* Check output limit */
- if (unlikely(op + (1 + LASTLITERALS) + (len >> 8) > oend))
- return 0;
- if (len >= (int)ML_MASK) {
- *token += ML_MASK;
- len -= ML_MASK;
- for (; len > 509 ; len -= 510) {
- *op++ = 255;
- *op++ = 255;
- }
- if (len > 254) {
- len -= 255;
- *op++ = 255;
- }
- *op++ = (u8)len;
- } else
- *token += len;
+ anchor = ip;
- /* Test end of chunk */
- if (ip > mflimit) {
- anchor = ip;
+ /* Test end of block */
+ if (ip > mflimit)
+ break;
+ if (op > oMaxSeq)
break;
- }
/* Fill table */
- hashtable[LZ4_HASH64K_VALUE(ip-2)] = (u16)(ip - 2 - base);
+ LZ4_putPosition(ip - 2, ctx->hashTable, tableType, base);
/* Test next position */
- ref = base + hashtable[LZ4_HASH64K_VALUE(ip)];
- hashtable[LZ4_HASH64K_VALUE(ip)] = (u16)(ip - base);
- if (A32(ref) == A32(ip)) {
- token = op++;
- *token = 0;
+ match = LZ4_getPosition(ip, ctx->hashTable, tableType, base);
+ LZ4_putPosition(ip, ctx->hashTable, tableType, base);
+
+ if ((match + MAX_DISTANCE >= ip)
+ && (LZ4_read32(match) == LZ4_read32(ip))) {
+ token = op++; *token = 0;
goto _next_match;
}
/* Prepare next loop */
- anchor = ip++;
- forwardh = LZ4_HASH64K_VALUE(ip);
+ forwardH = LZ4_hashPosition(++ip, tableType);
}
_last_literals:
/* Encode Last Literals */
- lastrun = (int)(iend - anchor);
- if (op + lastrun + 1 + (lastrun - RUN_MASK + 255) / 255 > oend)
- return 0;
- if (lastrun >= (int)RUN_MASK) {
- *op++ = (RUN_MASK << ML_BITS);
- lastrun -= RUN_MASK;
- for (; lastrun > 254 ; lastrun -= 255)
- *op++ = 255;
- *op++ = (u8)lastrun;
- } else
- *op++ = (lastrun << ML_BITS);
- memcpy(op, anchor, iend - anchor);
- op += iend - anchor;
+ {
+ size_t lastRunSize = (size_t)(iend - anchor);
+
+ if (op + 1 /* token */
+ + ((lastRunSize + 240) / 255) /* litLength */
+ + lastRunSize /* literals */ > oend) {
+ /* adapt lastRunSize to fill 'dst' */
+ lastRunSize = (oend - op) - 1;
+ lastRunSize -= (lastRunSize + 240) / 255;
+ }
+ ip = anchor + lastRunSize;
+
+ if (lastRunSize >= RUN_MASK) {
+ size_t accumulator = lastRunSize - RUN_MASK;
+
+ *op++ = RUN_MASK << ML_BITS;
+ for (; accumulator >= 255; accumulator -= 255)
+ *op++ = 255;
+ *op++ = (BYTE) accumulator;
+ } else {
+ *op++ = (BYTE)(lastRunSize<<ML_BITS);
+ }
+ memcpy(op, anchor, lastRunSize);
+ op += lastRunSize;
+ }
+
/* End */
- return (int)(((char *)op) - dest);
+ *srcSizePtr = (int) (((const char *)ip) - src);
+ return (int) (((char *)op) - dst);
}
-int lz4_compress(const unsigned char *src, size_t src_len,
- unsigned char *dst, size_t *dst_len, void *wrkmem)
+static int LZ4_compress_destSize_extState(
+ LZ4_stream_t *state,
+ const char *src,
+ char *dst,
+ int *srcSizePtr,
+ int targetDstSize)
{
- int ret = -1;
- int out_len = 0;
+#if LZ4_ARCH64
+ const tableType_t tableType = byU32;
+#else
+ const tableType_t tableType = byPtr;
+#endif
- if (src_len < LZ4_64KLIMIT)
- out_len = lz4_compress64kctx(wrkmem, src, dst, src_len,
- lz4_compressbound(src_len));
- else
- out_len = lz4_compressctx(wrkmem, src, dst, src_len,
- lz4_compressbound(src_len));
+ LZ4_resetStream(state);
+
+ if (targetDstSize >= LZ4_COMPRESSBOUND(*srcSizePtr)) {
+ /* compression success is guaranteed */
+ return LZ4_compress_fast_extState(
+ state, src, dst, *srcSizePtr,
+ targetDstSize, 1);
+ } else {
+ if (*srcSizePtr < LZ4_64Klimit)
+ return LZ4_compress_destSize_generic(
+ &state->internal_donotuse,
+ src, dst, srcSizePtr,
+ targetDstSize, byU16);
+ else
+ return LZ4_compress_destSize_generic(
+ &state->internal_donotuse,
+ src, dst, srcSizePtr,
+ targetDstSize, tableType);
+ }
+}
+
+
+int LZ4_compress_destSize(
+ const char *src,
+ char *dst,
+ int *srcSizePtr,
+ int targetDstSize,
+ void *wrkmem)
+{
+ return LZ4_compress_destSize_extState(wrkmem, src, dst, srcSizePtr,
+ targetDstSize);
+}
+EXPORT_SYMBOL(LZ4_compress_destSize);
+
+/*-******************************
+ * Streaming functions
+ ********************************/
+void LZ4_resetStream(LZ4_stream_t *LZ4_stream)
+{
+ memset(LZ4_stream, 0, sizeof(LZ4_stream_t));
+}
+
+int LZ4_loadDict(LZ4_stream_t *LZ4_dict,
+ const char *dictionary, int dictSize)
+{
+ LZ4_stream_t_internal *dict = &LZ4_dict->internal_donotuse;
+ const BYTE *p = (const BYTE *)dictionary;
+ const BYTE * const dictEnd = p + dictSize;
+ const BYTE *base;
+
+ if ((dict->initCheck)
+ || (dict->currentOffset > 1 * GB)) {
+ /* Uninitialized structure, or reuse overflow */
+ LZ4_resetStream(LZ4_dict);
+ }
+
+ if (dictSize < (int)HASH_UNIT) {
+ dict->dictionary = NULL;
+ dict->dictSize = 0;
+ return 0;
+ }
+
+ if ((dictEnd - p) > 64 * KB)
+ p = dictEnd - 64 * KB;
+ dict->currentOffset += 64 * KB;
+ base = p - dict->currentOffset;
+ dict->dictionary = p;
+ dict->dictSize = (U32)(dictEnd - p);
+ dict->currentOffset += dict->dictSize;
+
+ while (p <= dictEnd - HASH_UNIT) {
+ LZ4_putPosition(p, dict->hashTable, byU32, base);
+ p += 3;
+ }
+
+ return dict->dictSize;
+}
+EXPORT_SYMBOL(LZ4_loadDict);
+
+static void LZ4_renormDictT(LZ4_stream_t_internal *LZ4_dict,
+ const BYTE *src)
+{
+ if ((LZ4_dict->currentOffset > 0x80000000) ||
+ ((uptrval)LZ4_dict->currentOffset > (uptrval)src)) {
+ /* address space overflow */
+ /* rescale hash table */
+ U32 const delta = LZ4_dict->currentOffset - 64 * KB;
+ const BYTE *dictEnd = LZ4_dict->dictionary + LZ4_dict->dictSize;
+ int i;
+
+ for (i = 0; i < LZ4_HASH_SIZE_U32; i++) {
+ if (LZ4_dict->hashTable[i] < delta)
+ LZ4_dict->hashTable[i] = 0;
+ else
+ LZ4_dict->hashTable[i] -= delta;
+ }
+ LZ4_dict->currentOffset = 64 * KB;
+ if (LZ4_dict->dictSize > 64 * KB)
+ LZ4_dict->dictSize = 64 * KB;
+ LZ4_dict->dictionary = dictEnd - LZ4_dict->dictSize;
+ }
+}
+
+int LZ4_saveDict(LZ4_stream_t *LZ4_dict, char *safeBuffer, int dictSize)
+{
+ LZ4_stream_t_internal * const dict = &LZ4_dict->internal_donotuse;
+ const BYTE * const previousDictEnd = dict->dictionary + dict->dictSize;
+
+ if ((U32)dictSize > 64 * KB) {
+ /* useless to define a dictionary > 64 * KB */
+ dictSize = 64 * KB;
+ }
+ if ((U32)dictSize > dict->dictSize)
+ dictSize = dict->dictSize;
+
+ memmove(safeBuffer, previousDictEnd - dictSize, dictSize);
+
+ dict->dictionary = (const BYTE *)safeBuffer;
+ dict->dictSize = (U32)dictSize;
+
+ return dictSize;
+}
+EXPORT_SYMBOL(LZ4_saveDict);
+
+int LZ4_compress_fast_continue(LZ4_stream_t *LZ4_stream, const char *source,
+ char *dest, int inputSize, int maxOutputSize, int acceleration)
+{
+ LZ4_stream_t_internal *streamPtr = &LZ4_stream->internal_donotuse;
+ const BYTE * const dictEnd = streamPtr->dictionary
+ + streamPtr->dictSize;
- if (out_len < 0)
- goto exit;
+ const BYTE *smallest = (const BYTE *) source;
- *dst_len = out_len;
+ if (streamPtr->initCheck) {
+ /* Uninitialized structure detected */
+ return 0;
+ }
+
+ if ((streamPtr->dictSize > 0) && (smallest > dictEnd))
+ smallest = dictEnd;
+
+ LZ4_renormDictT(streamPtr, smallest);
+
+ if (acceleration < 1)
+ acceleration = LZ4_ACCELERATION_DEFAULT;
+
+ /* Check overlapping input/dictionary space */
+ {
+ const BYTE *sourceEnd = (const BYTE *) source + inputSize;
+
+ if ((sourceEnd > streamPtr->dictionary)
+ && (sourceEnd < dictEnd)) {
+ streamPtr->dictSize = (U32)(dictEnd - sourceEnd);
+ if (streamPtr->dictSize > 64 * KB)
+ streamPtr->dictSize = 64 * KB;
+ if (streamPtr->dictSize < 4)
+ streamPtr->dictSize = 0;
+ streamPtr->dictionary = dictEnd - streamPtr->dictSize;
+ }
+ }
- return 0;
-exit:
- return ret;
+ /* prefix mode : source data follows dictionary */
+ if (dictEnd == (const BYTE *)source) {
+ int result;
+
+ if ((streamPtr->dictSize < 64 * KB) &&
+ (streamPtr->dictSize < streamPtr->currentOffset)) {
+ result = LZ4_compress_generic(
+ streamPtr, source, dest, inputSize,
+ maxOutputSize, limitedOutput, byU32,
+ withPrefix64k, dictSmall, acceleration);
+ } else {
+ result = LZ4_compress_generic(
+ streamPtr, source, dest, inputSize,
+ maxOutputSize, limitedOutput, byU32,
+ withPrefix64k, noDictIssue, acceleration);
+ }
+ streamPtr->dictSize += (U32)inputSize;
+ streamPtr->currentOffset += (U32)inputSize;
+ return result;
+ }
+
+ /* external dictionary mode */
+ {
+ int result;
+
+ if ((streamPtr->dictSize < 64 * KB) &&
+ (streamPtr->dictSize < streamPtr->currentOffset)) {
+ result = LZ4_compress_generic(
+ streamPtr, source, dest, inputSize,
+ maxOutputSize, limitedOutput, byU32,
+ usingExtDict, dictSmall, acceleration);
+ } else {
+ result = LZ4_compress_generic(
+ streamPtr, source, dest, inputSize,
+ maxOutputSize, limitedOutput, byU32,
+ usingExtDict, noDictIssue, acceleration);
+ }
+ streamPtr->dictionary = (const BYTE *)source;
+ streamPtr->dictSize = (U32)inputSize;
+ streamPtr->currentOffset += (U32)inputSize;
+ return result;
+ }
}
-EXPORT_SYMBOL(lz4_compress);
+EXPORT_SYMBOL(LZ4_compress_fast_continue);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("LZ4 compressor");
diff --git a/lib/lz4/lz4_decompress.c b/lib/lz4/lz4_decompress.c
index 6d940c72b5fc..bd3574312b82 100644
--- a/lib/lz4/lz4_decompress.c
+++ b/lib/lz4/lz4_decompress.c
@@ -1,25 +1,16 @@
/*
- * LZ4 Decompressor for Linux kernel
- *
- * Copyright (C) 2013, LG Electronics, Kyungsik Lee <kyungsik.lee@lge.com>
- *
- * Based on LZ4 implementation by Yann Collet.
- *
* LZ4 - Fast LZ compression algorithm
- * Copyright (C) 2011-2012, Yann Collet.
- * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
- *
+ * Copyright (C) 2011 - 2016, Yann Collet.
+ * BSD 2 - Clause License (http://www.opensource.org/licenses/bsd - license.php)
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
- *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -31,313 +22,487 @@
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * You can contact the author at :
+ * - LZ4 homepage : http://www.lz4.org
+ * - LZ4 source repository : https://github.com/lz4/lz4
*
- * You can contact the author at :
- * - LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- * - LZ4 source repository : http://code.google.com/p/lz4/
+ * Changed for kernel usage by:
+ * Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
*/
-#ifndef STATIC
+/*-************************************
+ * Dependencies
+ **************************************/
+#include <linux/lz4.h>
+#include "lz4defs.h"
+#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
-#endif
-#include <linux/lz4.h>
-
#include <asm/unaligned.h>
-#include "lz4defs.h"
-
-static const int dec32table[] = {0, 3, 2, 3, 0, 0, 0, 0};
-#if LZ4_ARCH64
-static const int dec64table[] = {0, 0, 0, -1, 0, 1, 2, 3};
-#endif
-
-static int lz4_uncompress(const char *source, char *dest, int osize)
+/*-*****************************
+ * Decompression functions
+ *******************************/
+/* LZ4_decompress_generic() :
+ * This generic decompression function cover all use cases.
+ * It shall be instantiated several times, using different sets of directives
+ * Note that it is important this generic function is really inlined,
+ * in order to remove useless branches during compilation optimization.
+ */
+static FORCE_INLINE int LZ4_decompress_generic(
+ const char * const source,
+ char * const dest,
+ int inputSize,
+ /*
+ * If endOnInput == endOnInputSize,
+ * this value is the max size of Output Buffer.
+ */
+ int outputSize,
+ /* endOnOutputSize, endOnInputSize */
+ int endOnInput,
+ /* full, partial */
+ int partialDecoding,
+ /* only used if partialDecoding == partial */
+ int targetOutputSize,
+ /* noDict, withPrefix64k, usingExtDict */
+ int dict,
+ /* == dest when no prefix */
+ const BYTE * const lowPrefix,
+ /* only if dict == usingExtDict */
+ const BYTE * const dictStart,
+ /* note : = 0 if noDict */
+ const size_t dictSize
+ )
{
+ /* Local Variables */
const BYTE *ip = (const BYTE *) source;
- const BYTE *ref;
+ const BYTE * const iend = ip + inputSize;
+
BYTE *op = (BYTE *) dest;
- BYTE * const oend = op + osize;
+ BYTE * const oend = op + outputSize;
BYTE *cpy;
- unsigned token;
- size_t length;
+ BYTE *oexit = op + targetOutputSize;
+ const BYTE * const lowLimit = lowPrefix - dictSize;
+ const BYTE * const dictEnd = (const BYTE *)dictStart + dictSize;
+ const unsigned int dec32table[] = { 0, 1, 2, 1, 4, 4, 4, 4 };
+ const int dec64table[] = { 0, 0, 0, -1, 0, 1, 2, 3 };
+
+ const int safeDecode = (endOnInput == endOnInputSize);
+ const int checkOffset = ((safeDecode) && (dictSize < (int)(64 * KB)));
+
+ /* Special cases */
+ /* targetOutputSize too high => decode everything */
+ if ((partialDecoding) && (oexit > oend - MFLIMIT))
+ oexit = oend - MFLIMIT;
+
+ /* Empty output buffer */
+ if ((endOnInput) && (unlikely(outputSize == 0)))
+ return ((inputSize == 1) && (*ip == 0)) ? 0 : -1;
+
+ if ((!endOnInput) && (unlikely(outputSize == 0)))
+ return (*ip == 0 ? 1 : -1);
+
+ /* Main Loop : decode sequences */
while (1) {
+ size_t length;
+ const BYTE *match;
+ size_t offset;
+
+ /* get literal length */
+ unsigned int const token = *ip++;
+
+ length = token>>ML_BITS;
- /* get runlength */
- token = *ip++;
- length = (token >> ML_BITS);
if (length == RUN_MASK) {
- size_t len;
+ unsigned int s;
- len = *ip++;
- for (; len == 255; length += 255)
- len = *ip++;
- if (unlikely(length > (size_t)(length + len)))
+ do {
+ s = *ip++;
+ length += s;
+ } while (likely(endOnInput
+ ? ip < iend - RUN_MASK
+ : 1) & (s == 255));
+
+ if ((safeDecode)
+ && unlikely(
+ (size_t)(op + length) < (size_t)(op))) {
+ /* overflow detection */
+ goto _output_error;
+ }
+ if ((safeDecode)
+ && unlikely(
+ (size_t)(ip + length) < (size_t)(ip))) {
+ /* overflow detection */
goto _output_error;
- length += len;
+ }
}
/* copy literals */
cpy = op + length;
- if (unlikely(cpy > oend - COPYLENGTH)) {
- /*
- * Error: not enough place for another match
- * (min 4) + 5 literals
- */
- if (cpy != oend)
- goto _output_error;
+ if (((endOnInput) && ((cpy > (partialDecoding ? oexit : oend - MFLIMIT))
+ || (ip + length > iend - (2 + 1 + LASTLITERALS))))
+ || ((!endOnInput) && (cpy > oend - WILDCOPYLENGTH))) {
+ if (partialDecoding) {
+ if (cpy > oend) {
+ /*
+ * Error :
+ * write attempt beyond end of output buffer
+ */
+ goto _output_error;
+ }
+ if ((endOnInput)
+ && (ip + length > iend)) {
+ /*
+ * Error :
+ * read attempt beyond
+ * end of input buffer
+ */
+ goto _output_error;
+ }
+ } else {
+ if ((!endOnInput)
+ && (cpy != oend)) {
+ /*
+ * Error :
+ * block decoding must
+ * stop exactly there
+ */
+ goto _output_error;
+ }
+ if ((endOnInput)
+ && ((ip + length != iend)
+ || (cpy > oend))) {
+ /*
+ * Error :
+ * input must be consumed
+ */
+ goto _output_error;
+ }
+ }
memcpy(op, ip, length);
ip += length;
- break; /* EOF */
+ op += length;
+ /* Necessarily EOF, due to parsing restrictions */
+ break;
}
- LZ4_WILDCOPY(ip, op, cpy);
- ip -= (op - cpy);
+
+ LZ4_wildCopy(op, ip, cpy);
+ ip += length;
op = cpy;
/* get offset */
- LZ4_READ_LITTLEENDIAN_16(ref, cpy, ip);
+ offset = LZ4_readLE16(ip);
ip += 2;
+ match = op - offset;
- /* Error: offset create reference outside destination buffer */
- if (unlikely(ref < (BYTE *const) dest))
+ if ((checkOffset) && (unlikely(match < lowLimit))) {
+ /* Error : offset outside buffers */
goto _output_error;
+ }
+
+ /* costs ~1%; silence an msan warning when offset == 0 */
+ LZ4_write32(op, (U32)offset);
/* get matchlength */
length = token & ML_MASK;
if (length == ML_MASK) {
- for (; *ip == 255; length += 255)
- ip++;
- if (unlikely(length > (size_t)(length + *ip)))
+ unsigned int s;
+
+ do {
+ s = *ip++;
+
+ if ((endOnInput) && (ip > iend - LASTLITERALS))
+ goto _output_error;
+
+ length += s;
+ } while (s == 255);
+
+ if ((safeDecode)
+ && unlikely(
+ (size_t)(op + length) < (size_t)op)) {
+ /* overflow detection */
goto _output_error;
- length += *ip++;
+ }
}
- /* copy repeated sequence */
- if (unlikely((op - ref) < STEPSIZE)) {
-#if LZ4_ARCH64
- int dec64 = dec64table[op - ref];
-#else
- const int dec64 = 0;
-#endif
- op[0] = ref[0];
- op[1] = ref[1];
- op[2] = ref[2];
- op[3] = ref[3];
- op += 4;
- ref += 4;
- ref -= dec32table[op-ref];
- PUT4(ref, op);
- op += STEPSIZE - 4;
- ref -= dec64;
+ length += MINMATCH;
+
+ /* check external dictionary */
+ if ((dict == usingExtDict) && (match < lowPrefix)) {
+ if (unlikely(op + length > oend - LASTLITERALS)) {
+ /* doesn't respect parsing restriction */
+ goto _output_error;
+ }
+
+ if (length <= (size_t)(lowPrefix - match)) {
+ /*
+ * match can be copied as a single segment
+ * from external dictionary
+ */
+ memmove(op, dictEnd - (lowPrefix - match),
+ length);
+ op += length;
+ } else {
+ /*
+ * match encompass external
+ * dictionary and current block
+ */
+ size_t const copySize = (size_t)(lowPrefix - match);
+ size_t const restSize = length - copySize;
+
+ memcpy(op, dictEnd - copySize, copySize);
+ op += copySize;
+
+ if (restSize > (size_t)(op - lowPrefix)) {
+ /* overlap copy */
+ BYTE * const endOfMatch = op + restSize;
+ const BYTE *copyFrom = lowPrefix;
+
+ while (op < endOfMatch)
+ *op++ = *copyFrom++;
+ } else {
+ memcpy(op, lowPrefix, restSize);
+ op += restSize;
+ }
+ }
+
+ continue;
+ }
+
+ /* copy match within block */
+ cpy = op + length;
+
+ if (unlikely(offset < 8)) {
+ const int dec64 = dec64table[offset];
+
+ op[0] = match[0];
+ op[1] = match[1];
+ op[2] = match[2];
+ op[3] = match[3];
+ match += dec32table[offset];
+ memcpy(op + 4, match, 4);
+ match -= dec64;
} else {
- LZ4_COPYSTEP(ref, op);
+ LZ4_copy8(op, match);
+ match += 8;
}
- cpy = op + length - (STEPSIZE - 4);
- if (cpy > (oend - COPYLENGTH)) {
- /* Error: request to write beyond destination buffer */
- if (cpy > oend)
- goto _output_error;
-#if LZ4_ARCH64
- if ((ref + COPYLENGTH) > oend)
-#else
- if ((ref + COPYLENGTH) > oend ||
- (op + COPYLENGTH) > oend)
-#endif
+ op += 8;
+
+ if (unlikely(cpy > oend - 12)) {
+ BYTE * const oCopyLimit = oend - (WILDCOPYLENGTH - 1);
+
+ if (cpy > oend - LASTLITERALS) {
+ /*
+ * Error : last LASTLITERALS bytes
+ * must be literals (uncompressed)
+ */
goto _output_error;
- LZ4_SECURECOPY(ref, op, (oend - COPYLENGTH));
+ }
+
+ if (op < oCopyLimit) {
+ LZ4_wildCopy(op, match, oCopyLimit);
+ match += oCopyLimit - op;
+ op = oCopyLimit;
+ }
+
while (op < cpy)
- *op++ = *ref++;
- op = cpy;
- /*
- * Check EOF (should never happen, since last 5 bytes
- * are supposed to be literals)
- */
- if (op == oend)
- goto _output_error;
- continue;
+ *op++ = *match++;
+ } else {
+ LZ4_copy8(op, match);
+
+ if (length > 16)
+ LZ4_wildCopy(op + 8, match + 8, cpy);
}
- LZ4_SECURECOPY(ref, op, cpy);
+
op = cpy; /* correction */
}
+
/* end of decoding */
- return (int) (((char *)ip) - source);
+ if (endOnInput) {
+ /* Nb of output bytes decoded */
+ return (int) (((char *)op) - dest);
+ } else {
+ /* Nb of input bytes read */
+ return (int) (((const char *)ip) - source);
+ }
- /* write overflow error detected */
+ /* Overflow error detected */
_output_error:
return -1;
}
-static int lz4_uncompress_unknownoutputsize(const char *source, char *dest,
- int isize, size_t maxoutputsize)
+int LZ4_decompress_safe(const char *source, char *dest,
+ int compressedSize, int maxDecompressedSize)
{
- const BYTE *ip = (const BYTE *) source;
- const BYTE *const iend = ip + isize;
- const BYTE *ref;
-
+ return LZ4_decompress_generic(source, dest, compressedSize,
+ maxDecompressedSize, endOnInputSize, full, 0,
+ noDict, (BYTE *)dest, NULL, 0);
+}
- BYTE *op = (BYTE *) dest;
- BYTE * const oend = op + maxoutputsize;
- BYTE *cpy;
+int LZ4_decompress_safe_partial(const char *source, char *dest,
+ int compressedSize, int targetOutputSize, int maxDecompressedSize)
+{
+ return LZ4_decompress_generic(source, dest, compressedSize,
+ maxDecompressedSize, endOnInputSize, partial,
+ targetOutputSize, noDict, (BYTE *)dest, NULL, 0);
+}
- /* Main Loop */
- while (ip < iend) {
+int LZ4_decompress_fast(const char *source, char *dest, int originalSize)
+{
+ return LZ4_decompress_generic(source, dest, 0, originalSize,
+ endOnOutputSize, full, 0, withPrefix64k,
+ (BYTE *)(dest - 64 * KB), NULL, 64 * KB);
+}
- unsigned token;
- size_t length;
+int LZ4_setStreamDecode(LZ4_streamDecode_t *LZ4_streamDecode,
+ const char *dictionary, int dictSize)
+{
+ LZ4_streamDecode_t_internal *lz4sd = (LZ4_streamDecode_t_internal *) LZ4_streamDecode;
- /* get runlength */
- token = *ip++;
- length = (token >> ML_BITS);
- if (length == RUN_MASK) {
- int s = 255;
- while ((ip < iend) && (s == 255)) {
- s = *ip++;
- if (unlikely(length > (size_t)(length + s)))
- goto _output_error;
- length += s;
- }
- }
- /* copy literals */
- cpy = op + length;
- if ((cpy > oend - COPYLENGTH) ||
- (ip + length > iend - COPYLENGTH)) {
-
- if (cpy > oend)
- goto _output_error;/* writes beyond buffer */
-
- if (ip + length != iend)
- goto _output_error;/*
- * Error: LZ4 format requires
- * to consume all input
- * at this stage
- */
- memcpy(op, ip, length);
- op += length;
- break;/* Necessarily EOF, due to parsing restrictions */
- }
- LZ4_WILDCOPY(ip, op, cpy);
- ip -= (op - cpy);
- op = cpy;
+ lz4sd->prefixSize = (size_t) dictSize;
+ lz4sd->prefixEnd = (const BYTE *) dictionary + dictSize;
+ lz4sd->externalDict = NULL;
+ lz4sd->extDictSize = 0;
+ return 1;
+}
- /* get offset */
- LZ4_READ_LITTLEENDIAN_16(ref, cpy, ip);
- ip += 2;
- if (ref < (BYTE * const) dest)
- goto _output_error;
- /*
- * Error : offset creates reference
- * outside of destination buffer
- */
+/*
+ * *_continue() :
+ * These decoding functions allow decompression of multiple blocks
+ * in "streaming" mode.
+ * Previously decoded blocks must still be available at the memory
+ * position where they were decoded.
+ * If it's not possible, save the relevant part of
+ * decoded data into a safe buffer,
+ * and indicate where it stands using LZ4_setStreamDecode()
+ */
+int LZ4_decompress_safe_continue(LZ4_streamDecode_t *LZ4_streamDecode,
+ const char *source, char *dest, int compressedSize, int maxOutputSize)
+{
+ LZ4_streamDecode_t_internal *lz4sd = &LZ4_streamDecode->internal_donotuse;
+ int result;
+
+ if (lz4sd->prefixEnd == (BYTE *)dest) {
+ result = LZ4_decompress_generic(source, dest,
+ compressedSize,
+ maxOutputSize,
+ endOnInputSize, full, 0,
+ usingExtDict, lz4sd->prefixEnd - lz4sd->prefixSize,
+ lz4sd->externalDict,
+ lz4sd->extDictSize);
+
+ if (result <= 0)
+ return result;
+
+ lz4sd->prefixSize += result;
+ lz4sd->prefixEnd += result;
+ } else {
+ lz4sd->extDictSize = lz4sd->prefixSize;
+ lz4sd->externalDict = lz4sd->prefixEnd - lz4sd->extDictSize;
+ result = LZ4_decompress_generic(source, dest,
+ compressedSize, maxOutputSize,
+ endOnInputSize, full, 0,
+ usingExtDict, (BYTE *)dest,
+ lz4sd->externalDict, lz4sd->extDictSize);
+ if (result <= 0)
+ return result;
+ lz4sd->prefixSize = result;
+ lz4sd->prefixEnd = (BYTE *)dest + result;
+ }
- /* get matchlength */
- length = (token & ML_MASK);
- if (length == ML_MASK) {
- while (ip < iend) {
- int s = *ip++;
- if (unlikely(length > (size_t)(length + s)))
- goto _output_error;
- length += s;
- if (s == 255)
- continue;
- break;
- }
- }
+ return result;
+}
- /* copy repeated sequence */
- if (unlikely((op - ref) < STEPSIZE)) {
-#if LZ4_ARCH64
- int dec64 = dec64table[op - ref];
-#else
- const int dec64 = 0;
-#endif
- op[0] = ref[0];
- op[1] = ref[1];
- op[2] = ref[2];
- op[3] = ref[3];
- op += 4;
- ref += 4;
- ref -= dec32table[op - ref];
- PUT4(ref, op);
- op += STEPSIZE - 4;
- ref -= dec64;
- } else {
- LZ4_COPYSTEP(ref, op);
- }
- cpy = op + length - (STEPSIZE-4);
- if (cpy > oend - COPYLENGTH) {
- if (cpy > oend)
- goto _output_error; /* write outside of buf */
-#if LZ4_ARCH64
- if ((ref + COPYLENGTH) > oend)
-#else
- if ((ref + COPYLENGTH) > oend ||
- (op + COPYLENGTH) > oend)
-#endif
- goto _output_error;
- LZ4_SECURECOPY(ref, op, (oend - COPYLENGTH));
- while (op < cpy)
- *op++ = *ref++;
- op = cpy;
- /*
- * Check EOF (should never happen, since last 5 bytes
- * are supposed to be literals)
- */
- if (op == oend)
- goto _output_error;
- continue;
- }
- LZ4_SECURECOPY(ref, op, cpy);
- op = cpy; /* correction */
+int LZ4_decompress_fast_continue(LZ4_streamDecode_t *LZ4_streamDecode,
+ const char *source, char *dest, int originalSize)
+{
+ LZ4_streamDecode_t_internal *lz4sd = &LZ4_streamDecode->internal_donotuse;
+ int result;
+
+ if (lz4sd->prefixEnd == (BYTE *)dest) {
+ result = LZ4_decompress_generic(source, dest, 0, originalSize,
+ endOnOutputSize, full, 0,
+ usingExtDict,
+ lz4sd->prefixEnd - lz4sd->prefixSize,
+ lz4sd->externalDict, lz4sd->extDictSize);
+
+ if (result <= 0)
+ return result;
+
+ lz4sd->prefixSize += originalSize;
+ lz4sd->prefixEnd += originalSize;
+ } else {
+ lz4sd->extDictSize = lz4sd->prefixSize;
+ lz4sd->externalDict = lz4sd->prefixEnd - lz4sd->extDictSize;
+ result = LZ4_decompress_generic(source, dest, 0, originalSize,
+ endOnOutputSize, full, 0,
+ usingExtDict, (BYTE *)dest,
+ lz4sd->externalDict, lz4sd->extDictSize);
+ if (result <= 0)
+ return result;
+ lz4sd->prefixSize = originalSize;
+ lz4sd->prefixEnd = (BYTE *)dest + originalSize;
}
- /* end of decoding */
- return (int) (((char *) op) - dest);
- /* write overflow error detected */
-_output_error:
- return -1;
+ return result;
}
-int lz4_decompress(const unsigned char *src, size_t *src_len,
- unsigned char *dest, size_t actual_dest_len)
+/*
+ * Advanced decoding functions :
+ * *_usingDict() :
+ * These decoding functions work the same as "_continue" ones,
+ * the dictionary must be explicitly provided within parameters
+ */
+static FORCE_INLINE int LZ4_decompress_usingDict_generic(const char *source,
+ char *dest, int compressedSize, int maxOutputSize, int safe,
+ const char *dictStart, int dictSize)
{
- int ret = -1;
- int input_len = 0;
-
- input_len = lz4_uncompress(src, dest, actual_dest_len);
- if (input_len < 0)
- goto exit_0;
- *src_len = input_len;
+ if (dictSize == 0)
+ return LZ4_decompress_generic(source, dest,
+ compressedSize, maxOutputSize, safe, full, 0,
+ noDict, (BYTE *)dest, NULL, 0);
+ if (dictStart + dictSize == dest) {
+ if (dictSize >= (int)(64 * KB - 1))
+ return LZ4_decompress_generic(source, dest,
+ compressedSize, maxOutputSize, safe, full, 0,
+ withPrefix64k, (BYTE *)dest - 64 * KB, NULL, 0);
+ return LZ4_decompress_generic(source, dest, compressedSize,
+ maxOutputSize, safe, full, 0, noDict,
+ (BYTE *)dest - dictSize, NULL, 0);
+ }
+ return LZ4_decompress_generic(source, dest, compressedSize,
+ maxOutputSize, safe, full, 0, usingExtDict,
+ (BYTE *)dest, (const BYTE *)dictStart, dictSize);
+}
- return 0;
-exit_0:
- return ret;
+int LZ4_decompress_safe_usingDict(const char *source, char *dest,
+ int compressedSize, int maxOutputSize,
+ const char *dictStart, int dictSize)
+{
+ return LZ4_decompress_usingDict_generic(source, dest,
+ compressedSize, maxOutputSize, 1, dictStart, dictSize);
}
-#ifndef STATIC
-EXPORT_SYMBOL(lz4_decompress);
-#endif
-int lz4_decompress_unknownoutputsize(const unsigned char *src, size_t src_len,
- unsigned char *dest, size_t *dest_len)
+int LZ4_decompress_fast_usingDict(const char *source, char *dest,
+ int originalSize, const char *dictStart, int dictSize)
{
- int ret = -1;
- int out_len = 0;
-
- out_len = lz4_uncompress_unknownoutputsize(src, dest, src_len,
- *dest_len);
- if (out_len < 0)
- goto exit_0;
- *dest_len = out_len;
-
- return 0;
-exit_0:
- return ret;
+ return LZ4_decompress_usingDict_generic(source, dest, 0,
+ originalSize, 0, dictStart, dictSize);
}
+
#ifndef STATIC
-EXPORT_SYMBOL(lz4_decompress_unknownoutputsize);
+EXPORT_SYMBOL(LZ4_decompress_safe);
+EXPORT_SYMBOL(LZ4_decompress_safe_partial);
+EXPORT_SYMBOL(LZ4_decompress_fast);
+EXPORT_SYMBOL(LZ4_setStreamDecode);
+EXPORT_SYMBOL(LZ4_decompress_safe_continue);
+EXPORT_SYMBOL(LZ4_decompress_fast_continue);
+EXPORT_SYMBOL(LZ4_decompress_safe_usingDict);
+EXPORT_SYMBOL(LZ4_decompress_fast_usingDict);
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_DESCRIPTION("LZ4 Decompressor");
+MODULE_DESCRIPTION("LZ4 decompressor");
#endif
diff --git a/lib/lz4/lz4defs.h b/lib/lz4/lz4defs.h
index c79d7ea8a38e..00a0b58a0871 100644
--- a/lib/lz4/lz4defs.h
+++ b/lib/lz4/lz4defs.h
@@ -1,157 +1,227 @@
+#ifndef __LZ4DEFS_H__
+#define __LZ4DEFS_H__
+
/*
- * lz4defs.h -- architecture specific defines
- *
- * Copyright (C) 2013, LG Electronics, Kyungsik Lee <kyungsik.lee@lge.com>
+ * lz4defs.h -- common and architecture specific defines for the kernel usage
+
+ * LZ4 - Fast LZ compression algorithm
+ * Copyright (C) 2011-2016, Yann Collet.
+ * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * You can contact the author at :
+ * - LZ4 homepage : http://www.lz4.org
+ * - LZ4 source repository : https://github.com/lz4/lz4
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * Changed for kernel usage by:
+ * Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
*/
-/*
- * Detects 64 bits mode
- */
+#include <asm/unaligned.h>
+#include <linux/string.h> /* memset, memcpy */
+
+#define FORCE_INLINE __always_inline
+
+/*-************************************
+ * Basic Types
+ **************************************/
+#include <linux/types.h>
+
+typedef uint8_t BYTE;
+typedef uint16_t U16;
+typedef uint32_t U32;
+typedef int32_t S32;
+typedef uint64_t U64;
+typedef uintptr_t uptrval;
+
+/*-************************************
+ * Architecture specifics
+ **************************************/
#if defined(CONFIG_64BIT)
#define LZ4_ARCH64 1
#else
#define LZ4_ARCH64 0
#endif
-/*
- * Architecture-specific macros
- */
-#define BYTE u8
-typedef struct _U16_S { u16 v; } U16_S;
-typedef struct _U32_S { u32 v; } U32_S;
-typedef struct _U64_S { u64 v; } U64_S;
-#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
-
-#define A16(x) (((U16_S *)(x))->v)
-#define A32(x) (((U32_S *)(x))->v)
-#define A64(x) (((U64_S *)(x))->v)
-
-#define PUT4(s, d) (A32(d) = A32(s))
-#define PUT8(s, d) (A64(d) = A64(s))
-
-#define LZ4_READ_LITTLEENDIAN_16(d, s, p) \
- (d = s - A16(p))
-
-#define LZ4_WRITE_LITTLEENDIAN_16(p, v) \
- do { \
- A16(p) = v; \
- p += 2; \
- } while (0)
-#else /* CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS */
-
-#define A64(x) get_unaligned((u64 *)&(((U16_S *)(x))->v))
-#define A32(x) get_unaligned((u32 *)&(((U16_S *)(x))->v))
-#define A16(x) get_unaligned((u16 *)&(((U16_S *)(x))->v))
-
-#define PUT4(s, d) \
- put_unaligned(get_unaligned((const u32 *) s), (u32 *) d)
-#define PUT8(s, d) \
- put_unaligned(get_unaligned((const u64 *) s), (u64 *) d)
-
-#define LZ4_READ_LITTLEENDIAN_16(d, s, p) \
- (d = s - get_unaligned_le16(p))
-
-#define LZ4_WRITE_LITTLEENDIAN_16(p, v) \
- do { \
- put_unaligned_le16(v, (u16 *)(p)); \
- p += 2; \
- } while (0)
+#if defined(__LITTLE_ENDIAN)
+#define LZ4_LITTLE_ENDIAN 1
+#else
+#define LZ4_LITTLE_ENDIAN 0
#endif
-#define COPYLENGTH 8
-#define ML_BITS 4
-#define ML_MASK ((1U << ML_BITS) - 1)
+/*-************************************
+ * Constants
+ **************************************/
+#define MINMATCH 4
+
+#define WILDCOPYLENGTH 8
+#define LASTLITERALS 5
+#define MFLIMIT (WILDCOPYLENGTH + MINMATCH)
+
+/* Increase this value ==> compression run slower on incompressible data */
+#define LZ4_SKIPTRIGGER 6
+
+#define HASH_UNIT sizeof(size_t)
+
+#define KB (1 << 10)
+#define MB (1 << 20)
+#define GB (1U << 30)
+
+#define MAXD_LOG 16
+#define MAX_DISTANCE ((1 << MAXD_LOG) - 1)
+#define STEPSIZE sizeof(size_t)
+
+#define ML_BITS 4
+#define ML_MASK ((1U << ML_BITS) - 1)
#define RUN_BITS (8 - ML_BITS)
#define RUN_MASK ((1U << RUN_BITS) - 1)
-#define MEMORY_USAGE 14
-#define MINMATCH 4
-#define SKIPSTRENGTH 6
-#define LASTLITERALS 5
-#define MFLIMIT (COPYLENGTH + MINMATCH)
-#define MINLENGTH (MFLIMIT + 1)
-#define MAXD_LOG 16
-#define MAXD (1 << MAXD_LOG)
-#define MAXD_MASK (u32)(MAXD - 1)
-#define MAX_DISTANCE (MAXD - 1)
-#define HASH_LOG (MAXD_LOG - 1)
-#define HASHTABLESIZE (1 << HASH_LOG)
-#define MAX_NB_ATTEMPTS 256
-#define OPTIMAL_ML (int)((ML_MASK-1)+MINMATCH)
-#define LZ4_64KLIMIT ((1<<16) + (MFLIMIT - 1))
-#define HASHLOG64K ((MEMORY_USAGE - 2) + 1)
-#define HASH64KTABLESIZE (1U << HASHLOG64K)
-#define LZ4_HASH_VALUE(p) (((A32(p)) * 2654435761U) >> \
- ((MINMATCH * 8) - (MEMORY_USAGE-2)))
-#define LZ4_HASH64K_VALUE(p) (((A32(p)) * 2654435761U) >> \
- ((MINMATCH * 8) - HASHLOG64K))
-#define HASH_VALUE(p) (((A32(p)) * 2654435761U) >> \
- ((MINMATCH * 8) - HASH_LOG))
-
-#if LZ4_ARCH64/* 64-bit */
-#define STEPSIZE 8
-
-#define LZ4_COPYSTEP(s, d) \
- do { \
- PUT8(s, d); \
- d += 8; \
- s += 8; \
- } while (0)
-
-#define LZ4_COPYPACKET(s, d) LZ4_COPYSTEP(s, d)
-
-#define LZ4_SECURECOPY(s, d, e) \
- do { \
- if (d < e) { \
- LZ4_WILDCOPY(s, d, e); \
- } \
- } while (0)
-#define HTYPE u32
-
-#ifdef __BIG_ENDIAN
-#define LZ4_NBCOMMONBYTES(val) (__builtin_clzll(val) >> 3)
+
+/*-************************************
+ * Reading and writing into memory
+ **************************************/
+static FORCE_INLINE U16 LZ4_read16(const void *ptr)
+{
+ return get_unaligned((const U16 *)ptr);
+}
+
+static FORCE_INLINE U32 LZ4_read32(const void *ptr)
+{
+ return get_unaligned((const U32 *)ptr);
+}
+
+static FORCE_INLINE size_t LZ4_read_ARCH(const void *ptr)
+{
+ return get_unaligned((const size_t *)ptr);
+}
+
+static FORCE_INLINE void LZ4_write16(void *memPtr, U16 value)
+{
+ put_unaligned(value, (U16 *)memPtr);
+}
+
+static FORCE_INLINE void LZ4_write32(void *memPtr, U32 value)
+{
+ put_unaligned(value, (U32 *)memPtr);
+}
+
+static FORCE_INLINE U16 LZ4_readLE16(const void *memPtr)
+{
+ return get_unaligned_le16(memPtr);
+}
+
+static FORCE_INLINE void LZ4_writeLE16(void *memPtr, U16 value)
+{
+ return put_unaligned_le16(value, memPtr);
+}
+
+static FORCE_INLINE void LZ4_copy8(void *dst, const void *src)
+{
+#if LZ4_ARCH64
+ U64 a = get_unaligned((const U64 *)src);
+
+ put_unaligned(a, (U64 *)dst);
+#else
+ U32 a = get_unaligned((const U32 *)src);
+ U32 b = get_unaligned((const U32 *)src + 1);
+
+ put_unaligned(a, (U32 *)dst);
+ put_unaligned(b, (U32 *)dst + 1);
+#endif
+}
+
+/*
+ * customized variant of memcpy,
+ * which can overwrite up to 7 bytes beyond dstEnd
+ */
+static FORCE_INLINE void LZ4_wildCopy(void *dstPtr,
+ const void *srcPtr, void *dstEnd)
+{
+ BYTE *d = (BYTE *)dstPtr;
+ const BYTE *s = (const BYTE *)srcPtr;
+ BYTE *const e = (BYTE *)dstEnd;
+
+ do {
+ LZ4_copy8(d, s);
+ d += 8;
+ s += 8;
+ } while (d < e);
+}
+
+static FORCE_INLINE unsigned int LZ4_NbCommonBytes(register size_t val)
+{
+#if LZ4_LITTLE_ENDIAN
+ return __ffs(val) >> 3;
#else
-#define LZ4_NBCOMMONBYTES(val) (__builtin_ctzll(val) >> 3)
+ return (BITS_PER_LONG - 1 - __fls(val)) >> 3;
+#endif
+}
+
+static FORCE_INLINE unsigned int LZ4_count(
+ const BYTE *pIn,
+ const BYTE *pMatch,
+ const BYTE *pInLimit)
+{
+ const BYTE *const pStart = pIn;
+
+ while (likely(pIn < pInLimit - (STEPSIZE - 1))) {
+ size_t const diff = LZ4_read_ARCH(pMatch) ^ LZ4_read_ARCH(pIn);
+
+ if (!diff) {
+ pIn += STEPSIZE;
+ pMatch += STEPSIZE;
+ continue;
+ }
+
+ pIn += LZ4_NbCommonBytes(diff);
+
+ return (unsigned int)(pIn - pStart);
+ }
+
+#if LZ4_ARCH64
+ if ((pIn < (pInLimit - 3))
+ && (LZ4_read32(pMatch) == LZ4_read32(pIn))) {
+ pIn += 4;
+ pMatch += 4;
+ }
#endif
-#else /* 32-bit */
-#define STEPSIZE 4
+ if ((pIn < (pInLimit - 1))
+ && (LZ4_read16(pMatch) == LZ4_read16(pIn))) {
+ pIn += 2;
+ pMatch += 2;
+ }
-#define LZ4_COPYSTEP(s, d) \
- do { \
- PUT4(s, d); \
- d += 4; \
- s += 4; \
- } while (0)
+ if ((pIn < pInLimit) && (*pMatch == *pIn))
+ pIn++;
-#define LZ4_COPYPACKET(s, d) \
- do { \
- LZ4_COPYSTEP(s, d); \
- LZ4_COPYSTEP(s, d); \
- } while (0)
+ return (unsigned int)(pIn - pStart);
+}
-#define LZ4_SECURECOPY LZ4_WILDCOPY
-#define HTYPE const u8*
+typedef enum { noLimit = 0, limitedOutput = 1 } limitedOutput_directive;
+typedef enum { byPtr, byU32, byU16 } tableType_t;
-#ifdef __BIG_ENDIAN
-#define LZ4_NBCOMMONBYTES(val) (__builtin_clz(val) >> 3)
-#else
-#define LZ4_NBCOMMONBYTES(val) (__builtin_ctz(val) >> 3)
-#endif
+typedef enum { noDict = 0, withPrefix64k, usingExtDict } dict_directive;
+typedef enum { noDictIssue = 0, dictSmall } dictIssue_directive;
-#endif
+typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive;
+typedef enum { full = 0, partial = 1 } earlyEnd_directive;
-#define LZ4_WILDCOPY(s, d, e) \
- do { \
- LZ4_COPYPACKET(s, d); \
- } while (d < e)
-
-#define LZ4_BLINDCOPY(s, d, l) \
- do { \
- u8 *e = (d) + l; \
- LZ4_WILDCOPY(s, d, e); \
- d = e; \
- } while (0)
+#endif
diff --git a/lib/lz4/lz4hc_compress.c b/lib/lz4/lz4hc_compress.c
index f344f76b6559..176f03b83e56 100644
--- a/lib/lz4/lz4hc_compress.c
+++ b/lib/lz4/lz4hc_compress.c
@@ -1,19 +1,17 @@
/*
* LZ4 HC - High Compression Mode of LZ4
- * Copyright (C) 2011-2012, Yann Collet.
- * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+ * Copyright (C) 2011-2015, Yann Collet.
*
+ * BSD 2 - Clause License (http://www.opensource.org/licenses/bsd - license.php)
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
- *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -25,323 +23,361 @@
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
* You can contact the author at :
- * - LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- * - LZ4 source repository : http://code.google.com/p/lz4/
+ * - LZ4 homepage : http://www.lz4.org
+ * - LZ4 source repository : https://github.com/lz4/lz4
*
- * Changed for kernel use by:
- * Chanho Min <chanho.min@lge.com>
+ * Changed for kernel usage by:
+ * Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
*/
-#include <linux/module.h>
-#include <linux/kernel.h>
+/*-************************************
+ * Dependencies
+ **************************************/
#include <linux/lz4.h>
-#include <asm/unaligned.h>
#include "lz4defs.h"
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h> /* memset */
-struct lz4hc_data {
- const u8 *base;
- HTYPE hashtable[HASHTABLESIZE];
- u16 chaintable[MAXD];
- const u8 *nexttoupdate;
-} __attribute__((__packed__));
+/* *************************************
+ * Local Constants and types
+ ***************************************/
-static inline int lz4hc_init(struct lz4hc_data *hc4, const u8 *base)
+#define OPTIMAL_ML (int)((ML_MASK - 1) + MINMATCH)
+
+#define HASH_FUNCTION(i) (((i) * 2654435761U) \
+ >> ((MINMATCH*8) - LZ4HC_HASH_LOG))
+#define DELTANEXTU16(p) chainTable[(U16)(p)] /* faster */
+
+static U32 LZ4HC_hashPtr(const void *ptr)
{
- memset((void *)hc4->hashtable, 0, sizeof(hc4->hashtable));
- memset(hc4->chaintable, 0xFF, sizeof(hc4->chaintable));
-
-#if LZ4_ARCH64
- hc4->nexttoupdate = base + 1;
-#else
- hc4->nexttoupdate = base;
-#endif
- hc4->base = base;
- return 1;
+ return HASH_FUNCTION(LZ4_read32(ptr));
+}
+
+/**************************************
+ * HC Compression
+ **************************************/
+static void LZ4HC_init(LZ4HC_CCtx_internal *hc4, const BYTE *start)
+{
+ memset((void *)hc4->hashTable, 0, sizeof(hc4->hashTable));
+ memset(hc4->chainTable, 0xFF, sizeof(hc4->chainTable));
+ hc4->nextToUpdate = 64 * KB;
+ hc4->base = start - 64 * KB;
+ hc4->end = start;
+ hc4->dictBase = start - 64 * KB;
+ hc4->dictLimit = 64 * KB;
+ hc4->lowLimit = 64 * KB;
}
/* Update chains up to ip (excluded) */
-static inline void lz4hc_insert(struct lz4hc_data *hc4, const u8 *ip)
+static FORCE_INLINE void LZ4HC_Insert(LZ4HC_CCtx_internal *hc4,
+ const BYTE *ip)
{
- u16 *chaintable = hc4->chaintable;
- HTYPE *hashtable = hc4->hashtable;
-#if LZ4_ARCH64
+ U16 * const chainTable = hc4->chainTable;
+ U32 * const hashTable = hc4->hashTable;
const BYTE * const base = hc4->base;
-#else
- const int base = 0;
-#endif
+ U32 const target = (U32)(ip - base);
+ U32 idx = hc4->nextToUpdate;
+
+ while (idx < target) {
+ U32 const h = LZ4HC_hashPtr(base + idx);
+ size_t delta = idx - hashTable[h];
- while (hc4->nexttoupdate < ip) {
- const u8 *p = hc4->nexttoupdate;
- size_t delta = p - (hashtable[HASH_VALUE(p)] + base);
if (delta > MAX_DISTANCE)
delta = MAX_DISTANCE;
- chaintable[(size_t)(p) & MAXD_MASK] = (u16)delta;
- hashtable[HASH_VALUE(p)] = (p) - base;
- hc4->nexttoupdate++;
- }
-}
-static inline size_t lz4hc_commonlength(const u8 *p1, const u8 *p2,
- const u8 *const matchlimit)
-{
- const u8 *p1t = p1;
-
- while (p1t < matchlimit - (STEPSIZE - 1)) {
-#if LZ4_ARCH64
- u64 diff = A64(p2) ^ A64(p1t);
-#else
- u32 diff = A32(p2) ^ A32(p1t);
-#endif
- if (!diff) {
- p1t += STEPSIZE;
- p2 += STEPSIZE;
- continue;
- }
- p1t += LZ4_NBCOMMONBYTES(diff);
- return p1t - p1;
- }
-#if LZ4_ARCH64
- if ((p1t < (matchlimit-3)) && (A32(p2) == A32(p1t))) {
- p1t += 4;
- p2 += 4;
- }
-#endif
+ DELTANEXTU16(idx) = (U16)delta;
- if ((p1t < (matchlimit - 1)) && (A16(p2) == A16(p1t))) {
- p1t += 2;
- p2 += 2;
+ hashTable[h] = idx;
+ idx++;
}
- if ((p1t < matchlimit) && (*p2 == *p1t))
- p1t++;
- return p1t - p1;
+
+ hc4->nextToUpdate = target;
}
-static inline int lz4hc_insertandfindbestmatch(struct lz4hc_data *hc4,
- const u8 *ip, const u8 *const matchlimit, const u8 **matchpos)
+static FORCE_INLINE int LZ4HC_InsertAndFindBestMatch(
+ LZ4HC_CCtx_internal *hc4, /* Index table will be updated */
+ const BYTE *ip,
+ const BYTE * const iLimit,
+ const BYTE **matchpos,
+ const int maxNbAttempts)
{
- u16 *const chaintable = hc4->chaintable;
- HTYPE *const hashtable = hc4->hashtable;
- const u8 *ref;
-#if LZ4_ARCH64
+ U16 * const chainTable = hc4->chainTable;
+ U32 * const HashTable = hc4->hashTable;
const BYTE * const base = hc4->base;
-#else
- const int base = 0;
-#endif
- int nbattempts = MAX_NB_ATTEMPTS;
- size_t repl = 0, ml = 0;
- u16 delta;
+ const BYTE * const dictBase = hc4->dictBase;
+ const U32 dictLimit = hc4->dictLimit;
+ const U32 lowLimit = (hc4->lowLimit + 64 * KB > (U32)(ip - base))
+ ? hc4->lowLimit
+ : (U32)(ip - base) - (64 * KB - 1);
+ U32 matchIndex;
+ int nbAttempts = maxNbAttempts;
+ size_t ml = 0;
/* HC4 match finder */
- lz4hc_insert(hc4, ip);
- ref = hashtable[HASH_VALUE(ip)] + base;
-
- /* potential repetition */
- if (ref >= ip-4) {
- /* confirmed */
- if (A32(ref) == A32(ip)) {
- delta = (u16)(ip-ref);
- repl = ml = lz4hc_commonlength(ip + MINMATCH,
- ref + MINMATCH, matchlimit) + MINMATCH;
- *matchpos = ref;
- }
- ref -= (size_t)chaintable[(size_t)(ref) & MAXD_MASK];
- }
+ LZ4HC_Insert(hc4, ip);
+ matchIndex = HashTable[LZ4HC_hashPtr(ip)];
+
+ while ((matchIndex >= lowLimit)
+ && (nbAttempts)) {
+ nbAttempts--;
+ if (matchIndex >= dictLimit) {
+ const BYTE * const match = base + matchIndex;
+
+ if (*(match + ml) == *(ip + ml)
+ && (LZ4_read32(match) == LZ4_read32(ip))) {
+ size_t const mlt = LZ4_count(ip + MINMATCH,
+ match + MINMATCH, iLimit) + MINMATCH;
- while ((ref >= ip - MAX_DISTANCE) && nbattempts) {
- nbattempts--;
- if (*(ref + ml) == *(ip + ml)) {
- if (A32(ref) == A32(ip)) {
- size_t mlt =
- lz4hc_commonlength(ip + MINMATCH,
- ref + MINMATCH, matchlimit) + MINMATCH;
if (mlt > ml) {
ml = mlt;
- *matchpos = ref;
+ *matchpos = match;
+ }
+ }
+ } else {
+ const BYTE * const match = dictBase + matchIndex;
+
+ if (LZ4_read32(match) == LZ4_read32(ip)) {
+ size_t mlt;
+ const BYTE *vLimit = ip
+ + (dictLimit - matchIndex);
+
+ if (vLimit > iLimit)
+ vLimit = iLimit;
+ mlt = LZ4_count(ip + MINMATCH,
+ match + MINMATCH, vLimit) + MINMATCH;
+ if ((ip + mlt == vLimit)
+ && (vLimit < iLimit))
+ mlt += LZ4_count(ip + mlt,
+ base + dictLimit,
+ iLimit);
+ if (mlt > ml) {
+ /* virtual matchpos */
+ ml = mlt;
+ *matchpos = base + matchIndex;
}
}
}
- ref -= (size_t)chaintable[(size_t)(ref) & MAXD_MASK];
- }
-
- /* Complete table */
- if (repl) {
- const BYTE *ptr = ip;
- const BYTE *end;
- end = ip + repl - (MINMATCH-1);
- /* Pre-Load */
- while (ptr < end - delta) {
- chaintable[(size_t)(ptr) & MAXD_MASK] = delta;
- ptr++;
- }
- do {
- chaintable[(size_t)(ptr) & MAXD_MASK] = delta;
- /* Head of chain */
- hashtable[HASH_VALUE(ptr)] = (ptr) - base;
- ptr++;
- } while (ptr < end);
- hc4->nexttoupdate = end;
+ matchIndex -= DELTANEXTU16(matchIndex);
}
return (int)ml;
}
-static inline int lz4hc_insertandgetwidermatch(struct lz4hc_data *hc4,
- const u8 *ip, const u8 *startlimit, const u8 *matchlimit, int longest,
- const u8 **matchpos, const u8 **startpos)
+static FORCE_INLINE int LZ4HC_InsertAndGetWiderMatch(
+ LZ4HC_CCtx_internal *hc4,
+ const BYTE * const ip,
+ const BYTE * const iLowLimit,
+ const BYTE * const iHighLimit,
+ int longest,
+ const BYTE **matchpos,
+ const BYTE **startpos,
+ const int maxNbAttempts)
{
- u16 *const chaintable = hc4->chaintable;
- HTYPE *const hashtable = hc4->hashtable;
-#if LZ4_ARCH64
+ U16 * const chainTable = hc4->chainTable;
+ U32 * const HashTable = hc4->hashTable;
const BYTE * const base = hc4->base;
-#else
- const int base = 0;
-#endif
- const u8 *ref;
- int nbattempts = MAX_NB_ATTEMPTS;
- int delta = (int)(ip - startlimit);
+ const U32 dictLimit = hc4->dictLimit;
+ const BYTE * const lowPrefixPtr = base + dictLimit;
+ const U32 lowLimit = (hc4->lowLimit + 64 * KB > (U32)(ip - base))
+ ? hc4->lowLimit
+ : (U32)(ip - base) - (64 * KB - 1);
+ const BYTE * const dictBase = hc4->dictBase;
+ U32 matchIndex;
+ int nbAttempts = maxNbAttempts;
+ int delta = (int)(ip - iLowLimit);
/* First Match */
- lz4hc_insert(hc4, ip);
- ref = hashtable[HASH_VALUE(ip)] + base;
-
- while ((ref >= ip - MAX_DISTANCE) && (ref >= hc4->base)
- && (nbattempts)) {
- nbattempts--;
- if (*(startlimit + longest) == *(ref - delta + longest)) {
- if (A32(ref) == A32(ip)) {
- const u8 *reft = ref + MINMATCH;
- const u8 *ipt = ip + MINMATCH;
- const u8 *startt = ip;
-
- while (ipt < matchlimit-(STEPSIZE - 1)) {
- #if LZ4_ARCH64
- u64 diff = A64(reft) ^ A64(ipt);
- #else
- u32 diff = A32(reft) ^ A32(ipt);
- #endif
-
- if (!diff) {
- ipt += STEPSIZE;
- reft += STEPSIZE;
- continue;
+ LZ4HC_Insert(hc4, ip);
+ matchIndex = HashTable[LZ4HC_hashPtr(ip)];
+
+ while ((matchIndex >= lowLimit)
+ && (nbAttempts)) {
+ nbAttempts--;
+ if (matchIndex >= dictLimit) {
+ const BYTE *matchPtr = base + matchIndex;
+
+ if (*(iLowLimit + longest)
+ == *(matchPtr - delta + longest)) {
+ if (LZ4_read32(matchPtr) == LZ4_read32(ip)) {
+ int mlt = MINMATCH + LZ4_count(
+ ip + MINMATCH,
+ matchPtr + MINMATCH,
+ iHighLimit);
+ int back = 0;
+
+ while ((ip + back > iLowLimit)
+ && (matchPtr + back > lowPrefixPtr)
+ && (ip[back - 1] == matchPtr[back - 1]))
+ back--;
+
+ mlt -= back;
+
+ if (mlt > longest) {
+ longest = (int)mlt;
+ *matchpos = matchPtr + back;
+ *startpos = ip + back;
}
- ipt += LZ4_NBCOMMONBYTES(diff);
- goto _endcount;
- }
- #if LZ4_ARCH64
- if ((ipt < (matchlimit - 3))
- && (A32(reft) == A32(ipt))) {
- ipt += 4;
- reft += 4;
- }
- ipt += 2;
- #endif
- if ((ipt < (matchlimit - 1))
- && (A16(reft) == A16(ipt))) {
- reft += 2;
}
- if ((ipt < matchlimit) && (*reft == *ipt))
- ipt++;
-_endcount:
- reft = ref;
-
- while ((startt > startlimit)
- && (reft > hc4->base)
- && (startt[-1] == reft[-1])) {
- startt--;
- reft--;
- }
-
- if ((ipt - startt) > longest) {
- longest = (int)(ipt - startt);
- *matchpos = reft;
- *startpos = startt;
+ }
+ } else {
+ const BYTE * const matchPtr = dictBase + matchIndex;
+
+ if (LZ4_read32(matchPtr) == LZ4_read32(ip)) {
+ size_t mlt;
+ int back = 0;
+ const BYTE *vLimit = ip + (dictLimit - matchIndex);
+
+ if (vLimit > iHighLimit)
+ vLimit = iHighLimit;
+
+ mlt = LZ4_count(ip + MINMATCH,
+ matchPtr + MINMATCH, vLimit) + MINMATCH;
+
+ if ((ip + mlt == vLimit) && (vLimit < iHighLimit))
+ mlt += LZ4_count(ip + mlt, base + dictLimit,
+ iHighLimit);
+ while ((ip + back > iLowLimit)
+ && (matchIndex + back > lowLimit)
+ && (ip[back - 1] == matchPtr[back - 1]))
+ back--;
+
+ mlt -= back;
+
+ if ((int)mlt > longest) {
+ longest = (int)mlt;
+ *matchpos = base + matchIndex + back;
+ *startpos = ip + back;
}
}
}
- ref -= (size_t)chaintable[(size_t)(ref) & MAXD_MASK];
+
+ matchIndex -= DELTANEXTU16(matchIndex);
}
+
return longest;
}
-static inline int lz4_encodesequence(const u8 **ip, u8 **op, const u8 **anchor,
- int ml, const u8 *ref)
+static FORCE_INLINE int LZ4HC_encodeSequence(
+ const BYTE **ip,
+ BYTE **op,
+ const BYTE **anchor,
+ int matchLength,
+ const BYTE * const match,
+ limitedOutput_directive limitedOutputBuffer,
+ BYTE *oend)
{
- int length, len;
- u8 *token;
+ int length;
+ BYTE *token;
/* Encode Literal length */
length = (int)(*ip - *anchor);
token = (*op)++;
+
+ if ((limitedOutputBuffer)
+ && ((*op + (length>>8)
+ + length + (2 + 1 + LASTLITERALS)) > oend)) {
+ /* Check output limit */
+ return 1;
+ }
if (length >= (int)RUN_MASK) {
- *token = (RUN_MASK << ML_BITS);
+ int len;
+
+ *token = (RUN_MASK<<ML_BITS);
len = length - RUN_MASK;
for (; len > 254 ; len -= 255)
*(*op)++ = 255;
- *(*op)++ = (u8)len;
+ *(*op)++ = (BYTE)len;
} else
- *token = (length << ML_BITS);
+ *token = (BYTE)(length<<ML_BITS);
/* Copy Literals */
- LZ4_BLINDCOPY(*anchor, *op, length);
+ LZ4_wildCopy(*op, *anchor, (*op) + length);
+ *op += length;
/* Encode Offset */
- LZ4_WRITE_LITTLEENDIAN_16(*op, (u16)(*ip - ref));
+ LZ4_writeLE16(*op, (U16)(*ip - match));
+ *op += 2;
/* Encode MatchLength */
- len = (int)(ml - MINMATCH);
- if (len >= (int)ML_MASK) {
+ length = (int)(matchLength - MINMATCH);
+
+ if ((limitedOutputBuffer)
+ && (*op + (length>>8)
+ + (1 + LASTLITERALS) > oend)) {
+ /* Check output limit */
+ return 1;
+ }
+
+ if (length >= (int)ML_MASK) {
*token += ML_MASK;
- len -= ML_MASK;
- for (; len > 509 ; len -= 510) {
+ length -= ML_MASK;
+
+ for (; length > 509 ; length -= 510) {
*(*op)++ = 255;
*(*op)++ = 255;
}
- if (len > 254) {
- len -= 255;
+
+ if (length > 254) {
+ length -= 255;
*(*op)++ = 255;
}
- *(*op)++ = (u8)len;
+
+ *(*op)++ = (BYTE)length;
} else
- *token += len;
+ *token += (BYTE)(length);
/* Prepare next loop */
- *ip += ml;
+ *ip += matchLength;
*anchor = *ip;
return 0;
}
-static int lz4_compresshcctx(struct lz4hc_data *ctx,
- const char *source,
- char *dest,
- int isize)
+static int LZ4HC_compress_generic(
+ LZ4HC_CCtx_internal *const ctx,
+ const char * const source,
+ char * const dest,
+ int const inputSize,
+ int const maxOutputSize,
+ int compressionLevel,
+ limitedOutput_directive limit
+ )
{
- const u8 *ip = (const u8 *)source;
- const u8 *anchor = ip;
- const u8 *const iend = ip + isize;
- const u8 *const mflimit = iend - MFLIMIT;
- const u8 *const matchlimit = (iend - LASTLITERALS);
+ const BYTE *ip = (const BYTE *) source;
+ const BYTE *anchor = ip;
+ const BYTE * const iend = ip + inputSize;
+ const BYTE * const mflimit = iend - MFLIMIT;
+ const BYTE * const matchlimit = (iend - LASTLITERALS);
- u8 *op = (u8 *)dest;
+ BYTE *op = (BYTE *) dest;
+ BYTE * const oend = op + maxOutputSize;
+ unsigned int maxNbAttempts;
int ml, ml2, ml3, ml0;
- const u8 *ref = NULL;
- const u8 *start2 = NULL;
- const u8 *ref2 = NULL;
- const u8 *start3 = NULL;
- const u8 *ref3 = NULL;
- const u8 *start0;
- const u8 *ref0;
- int lastrun;
+ const BYTE *ref = NULL;
+ const BYTE *start2 = NULL;
+ const BYTE *ref2 = NULL;
+ const BYTE *start3 = NULL;
+ const BYTE *ref3 = NULL;
+ const BYTE *start0;
+ const BYTE *ref0;
+
+ /* init */
+ if (compressionLevel > LZ4HC_MAX_CLEVEL)
+ compressionLevel = LZ4HC_MAX_CLEVEL;
+ if (compressionLevel < 1)
+ compressionLevel = LZ4HC_DEFAULT_CLEVEL;
+ maxNbAttempts = 1 << (compressionLevel - 1);
+ ctx->end += inputSize;
ip++;
/* Main Loop */
while (ip < mflimit) {
- ml = lz4hc_insertandfindbestmatch(ctx, ip, matchlimit, (&ref));
+ ml = LZ4HC_InsertAndFindBestMatch(ctx, ip,
+ matchlimit, (&ref), maxNbAttempts);
if (!ml) {
ip++;
continue;
@@ -351,51 +387,59 @@ static int lz4_compresshcctx(struct lz4hc_data *ctx,
start0 = ip;
ref0 = ref;
ml0 = ml;
-_search2:
- if (ip+ml < mflimit)
- ml2 = lz4hc_insertandgetwidermatch(ctx, ip + ml - 2,
- ip + 1, matchlimit, ml, &ref2, &start2);
+
+_Search2:
+ if (ip + ml < mflimit)
+ ml2 = LZ4HC_InsertAndGetWiderMatch(ctx,
+ ip + ml - 2, ip + 0,
+ matchlimit, ml, &ref2,
+ &start2, maxNbAttempts);
else
ml2 = ml;
- /* No better match */
+
if (ml2 == ml) {
- lz4_encodesequence(&ip, &op, &anchor, ml, ref);
+ /* No better match */
+ if (LZ4HC_encodeSequence(&ip, &op,
+ &anchor, ml, ref, limit, oend))
+ return 0;
continue;
}
if (start0 < ip) {
- /* empirical */
if (start2 < ip + ml0) {
+ /* empirical */
ip = start0;
ref = ref0;
ml = ml0;
}
}
- /*
- * Here, start0==ip
- * First Match too small : removed
- */
+
+ /* Here, start0 == ip */
if ((start2 - ip) < 3) {
+ /* First Match too small : removed */
ml = ml2;
ip = start2;
ref = ref2;
- goto _search2;
+ goto _Search2;
}
-_search3:
+_Search3:
/*
- * Currently we have :
- * ml2 > ml1, and
- * ip1+3 <= ip2 (usually < ip1+ml1)
- */
+ * Currently we have :
+ * ml2 > ml1, and
+ * ip1 + 3 <= ip2 (usually < ip1 + ml1)
+ */
if ((start2 - ip) < OPTIMAL_ML) {
int correction;
int new_ml = ml;
+
if (new_ml > OPTIMAL_ML)
new_ml = OPTIMAL_ML;
if (ip + new_ml > start2 + ml2 - MINMATCH)
new_ml = (int)(start2 - ip) + ml2 - MINMATCH;
+
correction = new_ml - (int)(start2 - ip);
+
if (correction > 0) {
start2 += correction;
ref2 += correction;
@@ -403,39 +447,44 @@ _search3:
}
}
/*
- * Now, we have start2 = ip+new_ml,
- * with new_ml=min(ml, OPTIMAL_ML=18)
+ * Now, we have start2 = ip + new_ml,
+ * with new_ml = min(ml, OPTIMAL_ML = 18)
*/
+
if (start2 + ml2 < mflimit)
- ml3 = lz4hc_insertandgetwidermatch(ctx,
- start2 + ml2 - 3, start2, matchlimit,
- ml2, &ref3, &start3);
+ ml3 = LZ4HC_InsertAndGetWiderMatch(ctx,
+ start2 + ml2 - 3, start2,
+ matchlimit, ml2, &ref3, &start3,
+ maxNbAttempts);
else
ml3 = ml2;
- /* No better match : 2 sequences to encode */
if (ml3 == ml2) {
+ /* No better match : 2 sequences to encode */
/* ip & ref are known; Now for ml */
- if (start2 < ip+ml)
+ if (start2 < ip + ml)
ml = (int)(start2 - ip);
-
/* Now, encode 2 sequences */
- lz4_encodesequence(&ip, &op, &anchor, ml, ref);
+ if (LZ4HC_encodeSequence(&ip, &op, &anchor,
+ ml, ref, limit, oend))
+ return 0;
ip = start2;
- lz4_encodesequence(&ip, &op, &anchor, ml2, ref2);
+ if (LZ4HC_encodeSequence(&ip, &op, &anchor,
+ ml2, ref2, limit, oend))
+ return 0;
continue;
}
- /* Not enough space for match 2 : remove it */
if (start3 < ip + ml + 3) {
- /*
- * can write Seq1 immediately ==> Seq2 is removed,
- * so Seq3 becomes Seq1
- */
+ /* Not enough space for match 2 : remove it */
if (start3 >= (ip + ml)) {
+ /* can write Seq1 immediately
+ * ==> Seq2 is removed,
+ * so Seq3 becomes Seq1
+ */
if (start2 < ip + ml) {
- int correction =
- (int)(ip + ml - start2);
+ int correction = (int)(ip + ml - start2);
+
start2 += correction;
ref2 += correction;
ml2 -= correction;
@@ -446,35 +495,38 @@ _search3:
}
}
- lz4_encodesequence(&ip, &op, &anchor, ml, ref);
- ip = start3;
+ if (LZ4HC_encodeSequence(&ip, &op, &anchor,
+ ml, ref, limit, oend))
+ return 0;
+ ip = start3;
ref = ref3;
- ml = ml3;
+ ml = ml3;
start0 = start2;
ref0 = ref2;
ml0 = ml2;
- goto _search2;
+ goto _Search2;
}
start2 = start3;
ref2 = ref3;
ml2 = ml3;
- goto _search3;
+ goto _Search3;
}
/*
- * OK, now we have 3 ascending matches; let's write at least
- * the first one ip & ref are known; Now for ml
- */
+ * OK, now we have 3 ascending matches;
+ * let's write at least the first one
+ * ip & ref are known; Now for ml
+ */
if (start2 < ip + ml) {
if ((start2 - ip) < (int)ML_MASK) {
int correction;
+
if (ml > OPTIMAL_ML)
ml = OPTIMAL_ML;
if (ip + ml > start2 + ml2 - MINMATCH)
- ml = (int)(start2 - ip) + ml2
- - MINMATCH;
+ ml = (int)(start2 - ip) + ml2 - MINMATCH;
correction = ml - (int)(start2 - ip);
if (correction > 0) {
start2 += correction;
@@ -484,7 +536,9 @@ _search3:
} else
ml = (int)(start2 - ip);
}
- lz4_encodesequence(&ip, &op, &anchor, ml, ref);
+ if (LZ4HC_encodeSequence(&ip, &op, &anchor, ml,
+ ref, limit, oend))
+ return 0;
ip = start2;
ref = ref2;
@@ -494,46 +548,222 @@ _search3:
ref2 = ref3;
ml2 = ml3;
- goto _search3;
+ goto _Search3;
}
/* Encode Last Literals */
- lastrun = (int)(iend - anchor);
- if (lastrun >= (int)RUN_MASK) {
- *op++ = (RUN_MASK << ML_BITS);
- lastrun -= RUN_MASK;
- for (; lastrun > 254 ; lastrun -= 255)
- *op++ = 255;
- *op++ = (u8) lastrun;
- } else
- *op++ = (lastrun << ML_BITS);
- memcpy(op, anchor, iend - anchor);
- op += iend - anchor;
+ {
+ int lastRun = (int)(iend - anchor);
+
+ if ((limit)
+ && (((char *)op - dest) + lastRun + 1
+ + ((lastRun + 255 - RUN_MASK)/255)
+ > (U32)maxOutputSize)) {
+ /* Check output limit */
+ return 0;
+ }
+ if (lastRun >= (int)RUN_MASK) {
+ *op++ = (RUN_MASK<<ML_BITS);
+ lastRun -= RUN_MASK;
+ for (; lastRun > 254 ; lastRun -= 255)
+ *op++ = 255;
+ *op++ = (BYTE) lastRun;
+ } else
+ *op++ = (BYTE)(lastRun<<ML_BITS);
+ memcpy(op, anchor, iend - anchor);
+ op += iend - anchor;
+ }
+
/* End */
return (int) (((char *)op) - dest);
}
-int lz4hc_compress(const unsigned char *src, size_t src_len,
- unsigned char *dst, size_t *dst_len, void *wrkmem)
+static int LZ4_compress_HC_extStateHC(
+ void *state,
+ const char *src,
+ char *dst,
+ int srcSize,
+ int maxDstSize,
+ int compressionLevel)
{
- int ret = -1;
- int out_len = 0;
+ LZ4HC_CCtx_internal *ctx = &((LZ4_streamHC_t *)state)->internal_donotuse;
- struct lz4hc_data *hc4 = (struct lz4hc_data *)wrkmem;
- lz4hc_init(hc4, (const u8 *)src);
- out_len = lz4_compresshcctx((struct lz4hc_data *)hc4, (const u8 *)src,
- (char *)dst, (int)src_len);
+ if (((size_t)(state)&(sizeof(void *) - 1)) != 0) {
+ /* Error : state is not aligned
+ * for pointers (32 or 64 bits)
+ */
+ return 0;
+ }
- if (out_len < 0)
- goto exit;
+ LZ4HC_init(ctx, (const BYTE *)src);
- *dst_len = out_len;
- return 0;
+ if (maxDstSize < LZ4_compressBound(srcSize))
+ return LZ4HC_compress_generic(ctx, src, dst,
+ srcSize, maxDstSize, compressionLevel, limitedOutput);
+ else
+ return LZ4HC_compress_generic(ctx, src, dst,
+ srcSize, maxDstSize, compressionLevel, noLimit);
+}
+
+int LZ4_compress_HC(const char *src, char *dst, int srcSize,
+ int maxDstSize, int compressionLevel, void *wrkmem)
+{
+ return LZ4_compress_HC_extStateHC(wrkmem, src, dst,
+ srcSize, maxDstSize, compressionLevel);
+}
+EXPORT_SYMBOL(LZ4_compress_HC);
+
+/**************************************
+ * Streaming Functions
+ **************************************/
+void LZ4_resetStreamHC(LZ4_streamHC_t *LZ4_streamHCPtr, int compressionLevel)
+{
+ LZ4_streamHCPtr->internal_donotuse.base = NULL;
+ LZ4_streamHCPtr->internal_donotuse.compressionLevel = (unsigned int)compressionLevel;
+}
+
+int LZ4_loadDictHC(LZ4_streamHC_t *LZ4_streamHCPtr,
+ const char *dictionary,
+ int dictSize)
+{
+ LZ4HC_CCtx_internal *ctxPtr = &LZ4_streamHCPtr->internal_donotuse;
+
+ if (dictSize > 64 * KB) {
+ dictionary += dictSize - 64 * KB;
+ dictSize = 64 * KB;
+ }
+ LZ4HC_init(ctxPtr, (const BYTE *)dictionary);
+ if (dictSize >= 4)
+ LZ4HC_Insert(ctxPtr, (const BYTE *)dictionary + (dictSize - 3));
+ ctxPtr->end = (const BYTE *)dictionary + dictSize;
+ return dictSize;
+}
+EXPORT_SYMBOL(LZ4_loadDictHC);
-exit:
- return ret;
+/* compression */
+
+static void LZ4HC_setExternalDict(
+ LZ4HC_CCtx_internal *ctxPtr,
+ const BYTE *newBlock)
+{
+ if (ctxPtr->end >= ctxPtr->base + 4) {
+ /* Referencing remaining dictionary content */
+ LZ4HC_Insert(ctxPtr, ctxPtr->end - 3);
+ }
+
+ /*
+ * Only one memory segment for extDict,
+ * so any previous extDict is lost at this stage
+ */
+ ctxPtr->lowLimit = ctxPtr->dictLimit;
+ ctxPtr->dictLimit = (U32)(ctxPtr->end - ctxPtr->base);
+ ctxPtr->dictBase = ctxPtr->base;
+ ctxPtr->base = newBlock - ctxPtr->dictLimit;
+ ctxPtr->end = newBlock;
+ /* match referencing will resume from there */
+ ctxPtr->nextToUpdate = ctxPtr->dictLimit;
+}
+EXPORT_SYMBOL(LZ4HC_setExternalDict);
+
+static int LZ4_compressHC_continue_generic(
+ LZ4_streamHC_t *LZ4_streamHCPtr,
+ const char *source,
+ char *dest,
+ int inputSize,
+ int maxOutputSize,
+ limitedOutput_directive limit)
+{
+ LZ4HC_CCtx_internal *ctxPtr = &LZ4_streamHCPtr->internal_donotuse;
+
+ /* auto - init if forgotten */
+ if (ctxPtr->base == NULL)
+ LZ4HC_init(ctxPtr, (const BYTE *) source);
+
+ /* Check overflow */
+ if ((size_t)(ctxPtr->end - ctxPtr->base) > 2 * GB) {
+ size_t dictSize = (size_t)(ctxPtr->end - ctxPtr->base)
+ - ctxPtr->dictLimit;
+ if (dictSize > 64 * KB)
+ dictSize = 64 * KB;
+ LZ4_loadDictHC(LZ4_streamHCPtr,
+ (const char *)(ctxPtr->end) - dictSize, (int)dictSize);
+ }
+
+ /* Check if blocks follow each other */
+ if ((const BYTE *)source != ctxPtr->end)
+ LZ4HC_setExternalDict(ctxPtr, (const BYTE *)source);
+
+ /* Check overlapping input/dictionary space */
+ {
+ const BYTE *sourceEnd = (const BYTE *) source + inputSize;
+ const BYTE * const dictBegin = ctxPtr->dictBase + ctxPtr->lowLimit;
+ const BYTE * const dictEnd = ctxPtr->dictBase + ctxPtr->dictLimit;
+
+ if ((sourceEnd > dictBegin)
+ && ((const BYTE *)source < dictEnd)) {
+ if (sourceEnd > dictEnd)
+ sourceEnd = dictEnd;
+ ctxPtr->lowLimit = (U32)(sourceEnd - ctxPtr->dictBase);
+
+ if (ctxPtr->dictLimit - ctxPtr->lowLimit < 4)
+ ctxPtr->lowLimit = ctxPtr->dictLimit;
+ }
+ }
+
+ return LZ4HC_compress_generic(ctxPtr, source, dest,
+ inputSize, maxOutputSize, ctxPtr->compressionLevel, limit);
+}
+
+int LZ4_compress_HC_continue(
+ LZ4_streamHC_t *LZ4_streamHCPtr,
+ const char *source,
+ char *dest,
+ int inputSize,
+ int maxOutputSize)
+{
+ if (maxOutputSize < LZ4_compressBound(inputSize))
+ return LZ4_compressHC_continue_generic(LZ4_streamHCPtr,
+ source, dest, inputSize, maxOutputSize, limitedOutput);
+ else
+ return LZ4_compressHC_continue_generic(LZ4_streamHCPtr,
+ source, dest, inputSize, maxOutputSize, noLimit);
+}
+EXPORT_SYMBOL(LZ4_compress_HC_continue);
+
+/* dictionary saving */
+
+int LZ4_saveDictHC(
+ LZ4_streamHC_t *LZ4_streamHCPtr,
+ char *safeBuffer,
+ int dictSize)
+{
+ LZ4HC_CCtx_internal *const streamPtr = &LZ4_streamHCPtr->internal_donotuse;
+ int const prefixSize = (int)(streamPtr->end
+ - (streamPtr->base + streamPtr->dictLimit));
+
+ if (dictSize > 64 * KB)
+ dictSize = 64 * KB;
+ if (dictSize < 4)
+ dictSize = 0;
+ if (dictSize > prefixSize)
+ dictSize = prefixSize;
+
+ memmove(safeBuffer, streamPtr->end - dictSize, dictSize);
+
+ {
+ U32 const endIndex = (U32)(streamPtr->end - streamPtr->base);
+
+ streamPtr->end = (const BYTE *)safeBuffer + dictSize;
+ streamPtr->base = streamPtr->end - endIndex;
+ streamPtr->dictLimit = endIndex - dictSize;
+ streamPtr->lowLimit = endIndex - dictSize;
+
+ if (streamPtr->nextToUpdate < streamPtr->dictLimit)
+ streamPtr->nextToUpdate = streamPtr->dictLimit;
+ }
+ return dictSize;
}
-EXPORT_SYMBOL(lz4hc_compress);
+EXPORT_SYMBOL(LZ4_saveDictHC);
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_DESCRIPTION("LZ4HC compressor");
+MODULE_DESCRIPTION("LZ4 HC compressor");
diff --git a/lib/rbtree.c b/lib/rbtree.c
index 1f8b112a7c35..4ba2828a67c0 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -427,7 +427,9 @@ static inline void dummy_copy(struct rb_node *old, struct rb_node *new) {}
static inline void dummy_rotate(struct rb_node *old, struct rb_node *new) {}
static const struct rb_augment_callbacks dummy_callbacks = {
- dummy_propagate, dummy_copy, dummy_rotate
+ .propagate = dummy_propagate,
+ .copy = dummy_copy,
+ .rotate = dummy_rotate
};
void rb_insert_color(struct rb_node *node, struct rb_root *root)
diff --git a/lib/sort.c b/lib/sort.c
index fc20df42aa6f..975c6ef6fec7 100644
--- a/lib/sort.c
+++ b/lib/sort.c
@@ -4,6 +4,8 @@
* Jan 23 2005 Matt Mackall <mpm@selenic.com>
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/types.h>
#include <linux/export.h>
#include <linux/sort.h>
@@ -101,42 +103,3 @@ void sort(void *base, size_t num, size_t size,
}
EXPORT_SYMBOL(sort);
-
-#if 0
-#include <linux/slab.h>
-/* a simple boot-time regression test */
-
-int cmpint(const void *a, const void *b)
-{
- return *(int *)a - *(int *)b;
-}
-
-static int sort_test(void)
-{
- int *a, i, r = 1;
-
- a = kmalloc(1000 * sizeof(int), GFP_KERNEL);
- BUG_ON(!a);
-
- printk("testing sort()\n");
-
- for (i = 0; i < 1000; i++) {
- r = (r * 725861) % 6599;
- a[i] = r;
- }
-
- sort(a, 1000, sizeof(int), cmpint, NULL);
-
- for (i = 0; i < 999; i++)
- if (a[i] > a[i+1]) {
- printk("sort() failed!\n");
- break;
- }
-
- kfree(a);
-
- return 0;
-}
-
-module_init(sort_test);
-#endif
diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index fbdf87920093..0b1d3140fbb8 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -11,6 +11,7 @@
#define pr_fmt(fmt) "kasan test: %s " fmt, __func__
+#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/mman.h>
#include <linux/mm.h>
@@ -331,6 +332,38 @@ static noinline void __init kmem_cache_oob(void)
kmem_cache_destroy(cache);
}
+static noinline void __init memcg_accounted_kmem_cache(void)
+{
+ int i;
+ char *p;
+ size_t size = 200;
+ struct kmem_cache *cache;
+
+ cache = kmem_cache_create("test_cache", size, 0, SLAB_ACCOUNT, NULL);
+ if (!cache) {
+ pr_err("Cache allocation failed\n");
+ return;
+ }
+
+ pr_info("allocate memcg accounted object\n");
+ /*
+ * Several allocations with a delay to allow for lazy per memcg kmem
+ * cache creation.
+ */
+ for (i = 0; i < 5; i++) {
+ p = kmem_cache_alloc(cache, GFP_KERNEL);
+ if (!p) {
+ pr_err("Allocation failed\n");
+ goto free_cache;
+ }
+ kmem_cache_free(cache, p);
+ msleep(100);
+ }
+
+free_cache:
+ kmem_cache_destroy(cache);
+}
+
static char global_array[10];
static noinline void __init kasan_global_oob(void)
@@ -460,6 +493,7 @@ static int __init kmalloc_tests_init(void)
kmalloc_uaf_memset();
kmalloc_uaf2();
kmem_cache_oob();
+ memcg_accounted_kmem_cache();
kasan_stack_oob();
kasan_global_oob();
ksize_unpoisons_memory();
diff --git a/lib/test_sort.c b/lib/test_sort.c
new file mode 100644
index 000000000000..4db3911db50a
--- /dev/null
+++ b/lib/test_sort.c
@@ -0,0 +1,44 @@
+#include <linux/sort.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+/*
+ * A simple boot-time regression test
+ * License: GPL
+ */
+
+#define TEST_LEN 1000
+
+static int __init cmpint(const void *a, const void *b)
+{
+ return *(int *)a - *(int *)b;
+}
+
+static int __init test_sort_init(void)
+{
+ int *a, i, r = 1, err = -ENOMEM;
+
+ a = kmalloc_array(TEST_LEN, sizeof(*a), GFP_KERNEL);
+ if (!a)
+ return err;
+
+ for (i = 0; i < TEST_LEN; i++) {
+ r = (r * 725861) % 6599;
+ a[i] = r;
+ }
+
+ sort(a, TEST_LEN, sizeof(*a), cmpint, NULL);
+
+ err = -EINVAL;
+ for (i = 0; i < TEST_LEN-1; i++)
+ if (a[i] > a[i+1]) {
+ pr_err("test has failed\n");
+ goto exit;
+ }
+ err = 0;
+ pr_info("test passed\n");
+exit:
+ kfree(a);
+ return err;
+}
+subsys_initcall(test_sort_init);