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authorLinus Torvalds <torvalds@linux-foundation.org>2019-06-08 12:50:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-06-08 12:50:36 -0700
commit1ce2c85137b1db5b0e4158d558cb93dcff7674df (patch)
tree37f62adbc031e12747ba71f14b304edb8445fa82 /kernel
parent902b2edfca34f88b04b86e605087e200e7e79880 (diff)
parente7bf2ce837475445bfd44ac1193ced0684a70d96 (diff)
downloadlinux-1ce2c85137b1db5b0e4158d558cb93dcff7674df.tar.bz2
Merge tag 'char-misc-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH: "Here are some small char and misc driver fixes for 5.2-rc4 to resolve a number of reported issues. The most "notable" one here is the kernel headers in proc^Wsysfs fixes. Those changes move the header file info into sysfs and fixes the build issues that you reported. Other than that, a bunch of small habanalabs driver fixes, some fpga driver fixes, and a few other tiny driver fixes. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: habanalabs: Read upper bits of trace buffer from RWPHI habanalabs: Fix virtual address access via debugfs for 2MB pages fpga: zynqmp-fpga: Correctly handle error pointer habanalabs: fix bug in checking huge page optimization habanalabs: Avoid using a non-initialized MMU cache mutex habanalabs: fix debugfs code uapi/habanalabs: add opcode for enable/disable device debug mode habanalabs: halt debug engines on user process close test_firmware: Use correct snprintf() limit genwqe: Prevent an integer overflow in the ioctl parport: Fix mem leak in parport_register_dev_model fpga: dfl: expand minor range when registering chrdev region fpga: dfl: Add lockdep classes for pdata->lock fpga: dfl: afu: Pass the correct device to dma_mapping_error() fpga: stratix10-soc: fix use-after-free on s10_init() w1: ds2408: Fix typo after 49695ac46861 (reset on output_write retry with readback) kheaders: Do not regenerate archive if config is not changed kheaders: Move from proc to sysfs lkdtm/bugs: Adjust recursion test to avoid elision lkdtm/usercopy: Moves the KERNEL_DS test to non-canonical
Diffstat (limited to 'kernel')
-rw-r--r--kernel/Makefile4
-rwxr-xr-xkernel/gen_kheaders.sh (renamed from kernel/gen_ikh_data.sh)17
-rw-r--r--kernel/kheaders.c40
3 files changed, 30 insertions, 31 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index 33824f0385b3..a8d923b5481b 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -71,7 +71,7 @@ obj-$(CONFIG_UTS_NS) += utsname.o
obj-$(CONFIG_USER_NS) += user_namespace.o
obj-$(CONFIG_PID_NS) += pid_namespace.o
obj-$(CONFIG_IKCONFIG) += configs.o
-obj-$(CONFIG_IKHEADERS_PROC) += kheaders.o
+obj-$(CONFIG_IKHEADERS) += kheaders.o
obj-$(CONFIG_SMP) += stop_machine.o
obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
@@ -127,7 +127,7 @@ $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
$(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz
quiet_cmd_genikh = CHK $(obj)/kheaders_data.tar.xz
-cmd_genikh = $(CONFIG_SHELL) $(srctree)/kernel/gen_ikh_data.sh $@
+cmd_genikh = $(CONFIG_SHELL) $(srctree)/kernel/gen_kheaders.sh $@
$(obj)/kheaders_data.tar.xz: FORCE
$(call cmd,genikh)
diff --git a/kernel/gen_ikh_data.sh b/kernel/gen_kheaders.sh
index 591a94f7b387..9a34e1d9bd7f 100755
--- a/kernel/gen_ikh_data.sh
+++ b/kernel/gen_kheaders.sh
@@ -2,7 +2,7 @@
# SPDX-License-Identifier: GPL-2.0
# This script generates an archive consisting of kernel headers
-# for CONFIG_IKHEADERS_PROC.
+# for CONFIG_IKHEADERS.
set -e
spath="$(dirname "$(readlink -f "$0")")"
kroot="$spath/.."
@@ -31,9 +31,8 @@ arch/$SRCARCH/include/
# This block is useful for debugging the incremental builds.
# Uncomment it for debugging.
-# iter=1
-# if [ ! -f /tmp/iter ]; then echo 1 > /tmp/iter;
-# else; iter=$(($(cat /tmp/iter) + 1)); fi
+# if [ ! -f /tmp/iter ]; then iter=1; echo 1 > /tmp/iter;
+# else iter=$(($(cat /tmp/iter) + 1)); echo $iter > /tmp/iter; fi
# find $src_file_list -type f | xargs ls -lR > /tmp/src-ls-$iter
# find $obj_file_list -type f | xargs ls -lR > /tmp/obj-ls-$iter
@@ -43,10 +42,18 @@ arch/$SRCARCH/include/
pushd $kroot > /dev/null
src_files_md5="$(find $src_file_list -type f |
grep -v "include/generated/compile.h" |
+ grep -v "include/generated/autoconf.h" |
+ grep -v "include/config/auto.conf" |
+ grep -v "include/config/auto.conf.cmd" |
+ grep -v "include/config/tristate.conf" |
xargs ls -lR | md5sum | cut -d ' ' -f1)"
popd > /dev/null
obj_files_md5="$(find $obj_file_list -type f |
grep -v "include/generated/compile.h" |
+ grep -v "include/generated/autoconf.h" |
+ grep -v "include/config/auto.conf" |
+ grep -v "include/config/auto.conf.cmd" |
+ grep -v "include/config/tristate.conf" |
xargs ls -lR | md5sum | cut -d ' ' -f1)"
if [ -f $tarfile ]; then tarfile_md5="$(md5sum $tarfile | cut -d ' ' -f1)"; fi
@@ -82,7 +89,7 @@ find $cpio_dir -type f -print0 |
tar -Jcf $tarfile -C $cpio_dir/ . > /dev/null
-echo "$src_files_md5" > kernel/kheaders.md5
+echo "$src_files_md5" > kernel/kheaders.md5
echo "$obj_files_md5" >> kernel/kheaders.md5
echo "$(md5sum $tarfile | cut -d ' ' -f1)" >> kernel/kheaders.md5
diff --git a/kernel/kheaders.c b/kernel/kheaders.c
index 70ae6052920d..8f69772af77b 100644
--- a/kernel/kheaders.c
+++ b/kernel/kheaders.c
@@ -8,9 +8,8 @@
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/proc_fs.h>
+#include <linux/kobject.h>
#include <linux/init.h>
-#include <linux/uaccess.h>
/*
* Define kernel_headers_data and kernel_headers_data_end, within which the
@@ -31,39 +30,32 @@ extern char kernel_headers_data;
extern char kernel_headers_data_end;
static ssize_t
-ikheaders_read_current(struct file *file, char __user *buf,
- size_t len, loff_t *offset)
+ikheaders_read(struct file *file, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t len)
{
- return simple_read_from_buffer(buf, len, offset,
- &kernel_headers_data,
- &kernel_headers_data_end -
- &kernel_headers_data);
+ memcpy(buf, &kernel_headers_data + off, len);
+ return len;
}
-static const struct file_operations ikheaders_file_ops = {
- .read = ikheaders_read_current,
- .llseek = default_llseek,
+static struct bin_attribute kheaders_attr __ro_after_init = {
+ .attr = {
+ .name = "kheaders.tar.xz",
+ .mode = 0444,
+ },
+ .read = &ikheaders_read,
};
static int __init ikheaders_init(void)
{
- struct proc_dir_entry *entry;
-
- /* create the current headers file */
- entry = proc_create("kheaders.tar.xz", S_IRUGO, NULL,
- &ikheaders_file_ops);
- if (!entry)
- return -ENOMEM;
-
- proc_set_size(entry,
- &kernel_headers_data_end -
- &kernel_headers_data);
- return 0;
+ kheaders_attr.size = (&kernel_headers_data_end -
+ &kernel_headers_data);
+ return sysfs_create_bin_file(kernel_kobj, &kheaders_attr);
}
static void __exit ikheaders_cleanup(void)
{
- remove_proc_entry("kheaders.tar.xz", NULL);
+ sysfs_remove_bin_file(kernel_kobj, &kheaders_attr);
}
module_init(ikheaders_init);