From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: [PATCH v1 02/10] lib/uuid: move generate_random_uuid() to uuid.c Date: Wed, 17 Feb 2016 14:17:20 +0200 Message-ID: <1455711448-124103-3-git-send-email-andriy.shevchenko@linux.intel.com> References: <1455711448-124103-1-git-send-email-andriy.shevchenko@linux.intel.com> Return-path: In-Reply-To: <1455711448-124103-1-git-send-email-andriy.shevchenko@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: "Rafael J. Wysocki" , Theodore Ts'o , Arnd Bergmann , Greg Kroah-Hartman , Jarkko Sakkinen , Jani Nikula , David Airlie , Benjamin Tissoires , Bjorn Helgaas , Mathias Nyman , Matt Fleming , Lv Zheng , Mark Brown , Zhang Rui , Mika Westerberg , Andrew Morton , Rasmus Villemoes , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-efi@vger.kernel.org, linux-api@vger.kernel.org, linux-nvdimm@lists.01.org Cc: Andy Shevchenko List-Id: linux-acpi@vger.kernel.org Let's gather the UUID related functions under one hood. Signed-off-by: Andy Shevchenko --- drivers/char/random.c | 21 +-------------------- fs/btrfs/volumes.c | 2 +- fs/ext4/ioctl.c | 1 + fs/f2fs/file.c | 2 +- fs/reiserfs/objectid.c | 2 +- fs/ubifs/sb.c | 2 +- include/linux/random.h | 1 - include/linux/uuid.h | 2 ++ lib/uuid.c | 20 ++++++++++++++++++++ 9 files changed, 28 insertions(+), 25 deletions(-) diff --git a/drivers/char/random.c b/drivers/char/random.c index b583e53..0158d3b 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -260,6 +260,7 @@ #include #include #include +#include #include #include @@ -1621,26 +1622,6 @@ SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count, return urandom_read(NULL, buf, count, NULL); } -/*************************************************************** - * Random UUID interface - * - * Used here for a Boot ID, but can be useful for other kernel - * drivers. - ***************************************************************/ - -/* - * Generate random UUID - */ -void generate_random_uuid(unsigned char uuid_out[16]) -{ - get_random_bytes(uuid_out, 16); - /* Set UUID version to 4 --- truly random generation */ - uuid_out[6] = (uuid_out[6] & 0x0F) | 0x40; - /* Set the UUID variant to DCE */ - uuid_out[8] = (uuid_out[8] & 0x3F) | 0x80; -} -EXPORT_SYMBOL(generate_random_uuid); - /******************************************************************** * * Sysctl interface diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 2555e37..548c525 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -20,13 +20,13 @@ #include #include #include -#include #include #include #include #include #include #include +#include #include #include "ctree.h" #include "extent_map.h" diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index a99b010..9e100f6 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include "ext4_jbd2.h" #include "ext4.h" diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index a4362d4..c7fec78 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -20,7 +20,7 @@ #include #include #include -#include +#include #include "f2fs.h" #include "node.h" diff --git a/fs/reiserfs/objectid.c b/fs/reiserfs/objectid.c index 99a5d5d..415d66c 100644 --- a/fs/reiserfs/objectid.c +++ b/fs/reiserfs/objectid.c @@ -3,8 +3,8 @@ */ #include -#include #include +#include #include "reiserfs.h" /* find where objectid map starts */ diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c index f4fbc7b..3cbb904 100644 --- a/fs/ubifs/sb.c +++ b/fs/ubifs/sb.c @@ -28,8 +28,8 @@ #include "ubifs.h" #include -#include #include +#include /* * Default journal size in logical eraseblocks as a percent of total diff --git a/include/linux/random.h b/include/linux/random.h index 9c29122..e47e533 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -26,7 +26,6 @@ extern void get_random_bytes(void *buf, int nbytes); extern int add_random_ready_callback(struct random_ready_callback *rdy); extern void del_random_ready_callback(struct random_ready_callback *rdy); extern void get_random_bytes_arch(void *buf, int nbytes); -void generate_random_uuid(unsigned char uuid_out[16]); extern int random_int_secret_init(void); #ifndef MODULE diff --git a/include/linux/uuid.h b/include/linux/uuid.h index 6df2509..91c2b6d 100644 --- a/include/linux/uuid.h +++ b/include/linux/uuid.h @@ -33,6 +33,8 @@ static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2) return memcmp(&u1, &u2, sizeof(uuid_be)); } +void generate_random_uuid(unsigned char uuid[16]); + extern void uuid_le_gen(uuid_le *u); extern void uuid_be_gen(uuid_be *u); diff --git a/lib/uuid.c b/lib/uuid.c index 398821e..6c81c0b 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -23,6 +23,26 @@ #include #include +/*************************************************************** + * Random UUID interface + * + * Used here for a Boot ID, but can be useful for other kernel + * drivers. + ***************************************************************/ + +/* + * Generate random UUID + */ +void generate_random_uuid(unsigned char uuid[16]) +{ + get_random_bytes(uuid, 16); + /* Set UUID version to 4 --- truly random generation */ + uuid[6] = (uuid[6] & 0x0F) | 0x40; + /* Set the UUID variant to DCE */ + uuid[8] = (uuid[8] & 0x3F) | 0x80; +} +EXPORT_SYMBOL(generate_random_uuid); + static void __uuid_gen_common(__u8 b[16]) { prandom_bytes(b, 16); -- 2.7.0