Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-10 15:14:43 +00:00
Code Issues Projects Releases Packages Wiki Activity

lib: add uuid_str_to_bin for use with bootp and PXE uuid

Browse source 
Signed-off-by: Jason Hobbs <jason.hobbs@calxeda.com>
This commit is contained in:
Jason Hobbs 2011-08-23 11:06:56 +00:00 committed by Wolfgang Denk
parent dc0b7b0e61
commit e11938eabc
3 changed files with 90 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
include/common.h
View file

@ -694,6 +694,10 @@ int strcmp_compar(const void *, const void *);
/* lib/time.c */
void udelay (unsigned long);
/* lib/uuid.c */
void uuid_str_to_bin(const char *uuid, unsigned char *out);
int uuid_str_valid(const char *uuid);
/* lib/vsprintf.c */
ulong simple_strtoul(const char *cp,char **endp,unsigned int base);
int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);

1
lib/Makefile
View file

@ -55,6 +55,7 @@ COBJS-y += ctype.o
COBJS-y += div64.o
COBJS-y += string.o
COBJS-y += time.o
COBJS-$(CONFIG_BOOTP_PXE) += uuid.o
COBJS-y += vsprintf.o
COBJS := $(COBJS-y)

85
lib/uuid.c Normal file
View file

@ -0,0 +1,85 @@
/*
* Copyright 2011 Calxeda, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* 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/ctype.h>
#include "common.h"
/*
* This is what a UUID string looks like.
*
* x is a hexadecimal character. fields are separated by '-'s. When converting
* to a binary UUID, le means the field should be converted to little endian,
* and be means it should be converted to big endian.
*
* 0 9 14 19 24
* xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
* le le le be be
*/
int uuid_str_valid(const char *uuid)
{
int i, valid;
if (uuid == NULL)
return 0;
for (i = 0, valid = 1; uuid[i] && valid; i++) {
switch (i) {
case 8: case 13: case 18: case 23:
valid = (uuid[i] == '-');
break;
default:
valid = isxdigit(uuid[i]);
break;
}
}
if (i != 36 || !valid)
return 0;
return 1;
}
void uuid_str_to_bin(const char *uuid, unsigned char *out)
{
uint16_t tmp16;
uint32_t tmp32;
uint64_t tmp64;
if (!uuid || !out)
return;
tmp32 = cpu_to_le32(simple_strtoul(uuid, NULL, 16));
memcpy(out, &tmp32, 4);
tmp16 = cpu_to_le16(simple_strtoul(uuid + 9, NULL, 16));
memcpy(out + 4, &tmp16, 2);
tmp16 = cpu_to_le16(simple_strtoul(uuid + 14, NULL, 16));
memcpy(out + 6, &tmp16, 2);
tmp16 = cpu_to_be16(simple_strtoul(uuid + 19, NULL, 16));
memcpy(out + 8, &tmp16, 2);
tmp64 = cpu_to_be64(simple_strtoull(uuid + 24, NULL, 16));
memcpy(out + 10, (char *)&tmp64 + 2, 6);
}