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mkswap: accidentally committed wrong patch. fix it up

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-06-19 11:00:52 +02:00
parent e1e2273076
commit b96159d663
1 changed files with 13 additions and 12 deletions
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25
util-linux/mkswap.c
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@ -53,10 +53,6 @@ static void mkswap_selinux_setcontext(int fd, const char *path)
#if ENABLE_DESKTOP
static void mkswap_generate_uuid(uint8_t *buf)
{
pid_t pid;
unsigned i;
char uuid_string[32];
/* http://www.ietf.org/rfc/rfc4122.txt
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@ -64,7 +60,7 @@ static void mkswap_generate_uuid(uint8_t *buf)
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | time_mid | time_hi_and_version |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |clk_seq__and_variant | node (0-1) |
* |clk_seq_and_variant | node (0-1) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | node (2-5) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@ -73,11 +69,11 @@ static void mkswap_generate_uuid(uint8_t *buf)
* uint16_t time_mid (big endian)
* uint16_t time_hi_and_version (big endian)
* version is a 4-bit field:
* 1 Time-based version
* 2 DCE Security version, with embedded POSIX UIDs
* 3 Name-based version (MD5)
* 4 Randomly generated version
* 5 Name-based version (SHA-1)
* 1 Time-based
* 2 DCE Security, with embedded POSIX UIDs
* 3 Name-based (MD5)
* 4 Randomly generated
* 5 Name-based (SHA-1)
* uint16_t clk_seq_and_variant (big endian)
* variant is a 3-bit field:
* 0xx Reserved, NCS backward compatibility
@ -90,6 +86,9 @@ static void mkswap_generate_uuid(uint8_t *buf)
* time_hi_and_version & 0x0fff | 0x4000
* clk_seq_and_variant & 0x3fff | 0x8000
*/
pid_t pid;
int i;
char uuid_string[32];
i = open("/dev/urandom", O_RDONLY);
if (i >= 0) {
@ -110,8 +109,10 @@ static void mkswap_generate_uuid(uint8_t *buf)
pid = 0;
}
buf[4 + 2 ] = (buf[4 + 2 ] & 0x0f) | 0x40; /* time_hi_and_version */
buf[4 + 2 + 2] = (buf[4 + 2 + 2] & 0x3f) | 0x80; /* clk_seq_and_variant */
/* version = 4 */
buf[4 + 2 ] = (buf[4 + 2 ] & 0x0f) | 0x40;
/* variant = 10x */
buf[4 + 2 + 2] = (buf[4 + 2 + 2] & 0x3f) | 0x80;
bin2hex(uuid_string, (void*) buf, 16);
/* f.e. UUID=dfd9c173-be52-4d27-99a5-c34c6c2ff55f */