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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-05-20 17:01:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 17:58:30 -0700
commit2b1b0d66704a8cafe83be7114ec4c15ab3a314ad (patch)
tree4ad1f40e5907b94bac6a7499e11962bbf6a843c0 /include
parent8da4b8c48e7b43cb16d05e1dbb34ad9f73ab7efd (diff)
downloadlinux-2b1b0d66704a8cafe83be7114ec4c15ab3a314ad.tar.bz2
lib/uuid.c: introduce a few more generic helpers
There are new helpers in this patch: uuid_is_valid checks if a UUID is valid uuid_be_to_bin converts from string to binary (big endian) uuid_le_to_bin converts from string to binary (little endian) They will be used in future, i.e. in the following patches in the series. This also moves the indices arrays to lib/uuid.c to be shared accross modules. [andriy.shevchenko@linux.intel.com: fix typo] Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/uuid.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/uuid.h b/include/linux/uuid.h
index 91c2b6d9cbb7..e0b95e728a77 100644
--- a/include/linux/uuid.h
+++ b/include/linux/uuid.h
@@ -22,6 +22,11 @@
#include <uapi/linux/uuid.h>
+/*
+ * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")
+ * not including trailing NUL.
+ */
+#define UUID_STRING_LEN 36
static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2)
{
@@ -38,4 +43,12 @@ void generate_random_uuid(unsigned char uuid[16]);
extern void uuid_le_gen(uuid_le *u);
extern void uuid_be_gen(uuid_be *u);
+bool __must_check uuid_is_valid(const char *uuid);
+
+extern const u8 uuid_le_index[16];
+extern const u8 uuid_be_index[16];
+
+int uuid_le_to_bin(const char *uuid, uuid_le *u);
+int uuid_be_to_bin(const char *uuid, uuid_be *u);
+
#endif