summaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-28 14:42:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-28 14:42:18 -0700
commit9a90e09854a3c7cc603ab8fc9163f77bb1f66cfa (patch)
treec8c5f767dd2351c9db440f003cc14401583bafd3 /lib
parentd372e7fe4698bde3a00b718f7901a0025dda47ef (diff)
parentd3b383338f105f50724c10a7d81b04a3930e886b (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (27 commits) ACPI: Don't let acpi_pad needlessly mark TSC unstable drivers/acpi/sleep.h: Checkpatch cleanup ACPI: Minor cleanup eliminating redundant PMTIMER_TICKS to NS conversion ACPI: delete unused c-state promotion/demotion data strucutures ACPI: video: fix acpi_backlight=video ACPI: EC: Use kmemdup drivers/acpi: use kasprintf ACPI, APEI, EINJ injection parameters support Add x64 support to debugfs ACPI, APEI, Use ERST for persistent storage of MCE ACPI, APEI, Error Record Serialization Table (ERST) support ACPI, APEI, Generic Hardware Error Source memory error support ACPI, APEI, UEFI Common Platform Error Record (CPER) header Unified UUID/GUID definition ACPI Hardware Error Device (PNP0C33) support ACPI, APEI, PCIE AER, use general HEST table parsing in AER firmware_first setup ACPI, APEI, Document for APEI ACPI, APEI, EINJ support ACPI, APEI, HEST table parsing ACPI, APEI, APEI supporting infrastructure ...
Diffstat (limited to 'lib')
-rw-r--r--lib/Makefile2
-rw-r--r--lib/uuid.c53
2 files changed, 54 insertions, 1 deletions
diff --git a/lib/Makefile b/lib/Makefile
index c8567a59d316..3f1062cbbff4 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -21,7 +21,7 @@ lib-y += kobject.o kref.o klist.o
obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \
- string_helpers.o gcd.o lcm.o list_sort.o
+ string_helpers.o gcd.o lcm.o list_sort.o uuid.o
ifeq ($(CONFIG_DEBUG_KOBJECT),y)
CFLAGS_kobject.o += -DDEBUG
diff --git a/lib/uuid.c b/lib/uuid.c
new file mode 100644
index 000000000000..8fadd7cef46c
--- /dev/null
+++ b/lib/uuid.c
@@ -0,0 +1,53 @@
+/*
+ * Unified UUID/GUID definition
+ *
+ * Copyright (C) 2009, Intel Corp.
+ * Huang Ying <ying.huang@intel.com>
+ *
+ * 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;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/uuid.h>
+#include <linux/random.h>
+
+static void __uuid_gen_common(__u8 b[16])
+{
+ int i;
+ u32 r;
+
+ for (i = 0; i < 4; i++) {
+ r = random32();
+ memcpy(b + i * 4, &r, 4);
+ }
+ /* reversion 0b10 */
+ b[8] = (b[8] & 0x3F) | 0x80;
+}
+
+void uuid_le_gen(uuid_le *lu)
+{
+ __uuid_gen_common(lu->b);
+ /* version 4 : random generation */
+ lu->b[7] = (lu->b[7] & 0x0F) | 0x40;
+}
+EXPORT_SYMBOL_GPL(uuid_le_gen);
+
+void uuid_be_gen(uuid_be *bu)
+{
+ __uuid_gen_common(bu->b);
+ /* version 4 : random generation */
+ bu->b[6] = (bu->b[6] & 0x0F) | 0x40;
+}
+EXPORT_SYMBOL_GPL(uuid_be_gen);