* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
- *
+ *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
*/
#define _SVID_SOURCE
+#include "config.h"
+
+#ifdef _WIN32
+#define _WIN32_WINNT 0x0500
+#include <windows.h>
+#define UUID MYUUID
+#endif
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
+#endif
#include <sys/wait.h>
#include <sys/stat.h>
+#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
+#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#if defined(__linux__) && defined(HAVE_SYS_SYSCALL_H)
#include <sys/syscall.h>
#endif
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
#include "uuidP.h"
#include "uuidd.h"
THREAD_LOCAL unsigned short jrand_seed[3];
#endif
+#ifdef _WIN32
+static void gettimeofday (struct timeval *tv, void *dummy)
+{
+ FILETIME ftime;
+ uint64_t n;
+
+ GetSystemTimeAsFileTime (&ftime);
+ n = (((uint64_t) ftime.dwHighDateTime << 32)
+ + (uint64_t) ftime.dwLowDateTime);
+ if (n) {
+ n /= 10;
+ n -= ((369 * 365 + 89) * (uint64_t) 86400) * 1000000;
+ }
+
+ tv->tv_sec = n / 1000000;
+ tv->tv_usec = n % 1000000;
+}
+
+static int getuid (void)
+{
+ return 1;
+}
+#endif
+
static int get_random_fd(void)
{
struct timeval tv;
if (fd == -2) {
gettimeofday(&tv, 0);
+#ifndef _WIN32
fd = open("/dev/urandom", O_RDONLY);
if (fd == -1)
fd = open("/dev/random", O_RDONLY | O_NONBLOCK);
if (fd >= 0) {
i = fcntl(fd, F_GETFD);
- if (i >= 0)
+ if (i >= 0)
fcntl(fd, F_SETFD, i | FD_CLOEXEC);
}
+#endif
srand((getpid() << 16) ^ getuid() ^ tv.tv_sec ^ tv.tv_usec);
#ifdef DO_JRAND_MIX
jrand_seed[0] = getpid() ^ (tv.tv_sec & 0xFFFF);
{
int i, n = nbytes, fd = get_random_fd();
int lose_counter = 0;
- unsigned char *cp = (unsigned char *) buf;
- unsigned short tmp_seed[3];
+ unsigned char *cp = buf;
if (fd >= 0) {
while (n > 0) {
lose_counter = 0;
}
}
-
+
/*
* We do this all the time, but this is the only source of
* randomness if /dev/random/urandom is out to lunch.
for (cp = buf, i = 0; i < nbytes; i++)
*cp++ ^= (rand() >> 7) & 0xFF;
#ifdef DO_JRAND_MIX
- memcpy(tmp_seed, jrand_seed, sizeof(tmp_seed));
- jrand_seed[2] = jrand_seed[2] ^ syscall(__NR_gettid);
- for (cp = buf, i = 0; i < nbytes; i++)
- *cp++ ^= (jrand48(tmp_seed) >> 7) & 0xFF;
- memcpy(jrand_seed, tmp_seed,
- sizeof(jrand_seed)-sizeof(unsigned short));
+ {
+ unsigned short tmp_seed[3];
+
+ memcpy(tmp_seed, jrand_seed, sizeof(tmp_seed));
+ jrand_seed[2] = jrand_seed[2] ^ syscall(__NR_gettid);
+ for (cp = buf, i = 0; i < nbytes; i++)
+ *cp++ ^= (jrand48(tmp_seed) >> 7) & 0xFF;
+ memcpy(jrand_seed, tmp_seed,
+ sizeof(jrand_seed) - sizeof(unsigned short));
+ }
#endif
return;
/*
* Get the ethernet hardware address, if we can find it...
+ *
+ * XXX for a windows version, probably should use GetAdaptersInfo:
+ * http://www.codeguru.com/cpp/i-n/network/networkinformation/article.php/c5451
+ * commenting out get_node_id just to get gen_uuid to compile under windows
+ * is not the right way to go!
*/
static int get_node_id(unsigned char *node_id)
{
/*
* BSD 4.4 defines the size of an ifreq to be
* max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
- * However, under earlier systems, sa_len isn't present, so the size is
+ * However, under earlier systems, sa_len isn't present, so the size is
* just sizeof(struct ifreq)
*/
#ifdef HAVE_SA_LEN
THREAD_LOCAL uint16_t clock_seq;
struct timeval tv;
struct flock fl;
- unsigned long long clock_reg;
+ uint64_t clock_reg;
mode_t save_umask;
+ int len;
if (state_fd == -2) {
save_umask = umask(0);
state_fd = open("/var/lib/libuuid/clock.txt",
O_RDWR|O_CREAT, 0660);
(void) umask(save_umask);
- state_f = fdopen(state_fd, "r+");
- if (!state_f) {
- close(state_fd);
- state_fd = -1;
+ if (state_fd >= 0) {
+ state_f = fdopen(state_fd, "r+");
+ if (!state_f) {
+ close(state_fd);
+ state_fd = -1;
+ }
}
}
fl.l_type = F_WRLCK;
if ((errno == EAGAIN) || (errno == EINTR))
continue;
fclose(state_f);
- close(state_fd);
state_fd = -1;
break;
}
adjustment = 0;
last = tv;
}
-
+
clock_reg = tv.tv_usec*10 + adjustment;
- clock_reg += ((unsigned long long) tv.tv_sec)*10000000;
- clock_reg += (((unsigned long long) 0x01B21DD2) << 32) + 0x13814000;
+ clock_reg += ((uint64_t) tv.tv_sec)*10000000;
+ clock_reg += (((uint64_t) 0x01B21DD2) << 32) + 0x13814000;
if (num && (*num > 1)) {
adjustment += *num - 1;
if (state_fd > 0) {
rewind(state_f);
- ftruncate(state_fd, 0);
- fprintf(state_f, "clock: %04x tv: %lu %lu adj: %d\n",
- clock_seq, last.tv_sec, last.tv_usec, adjustment);
+ len = fprintf(state_f,
+ "clock: %04x tv: %016lu %08lu adj: %08d\n",
+ clock_seq, last.tv_sec, (long)last.tv_usec,
+ adjustment);
fflush(state_f);
+ if (ftruncate(state_fd, len) < 0) {
+ fprintf(state_f, " \n");
+ fflush(state_f);
+ }
rewind(state_f);
fl.l_type = F_UNLCK;
- fcntl(state_fd, F_SETLK, &fl);
+ if (fcntl(state_fd, F_SETLK, &fl) < 0) {
+ fclose(state_f);
+ state_fd = -1;
+ }
}
*clock_high = clock_reg >> 32;
return 0;
}
+#if defined(USE_UUIDD) && defined(HAVE_SYS_UN_H)
static ssize_t read_all(int fd, char *buf, size_t count)
{
ssize_t ret;
ssize_t c = 0;
+ int tries = 0;
memset(buf, 0, count);
while (count > 0) {
ret = read(fd, buf, count);
- if (ret < 0) {
- if ((errno == EAGAIN) || (errno == EINTR))
+ if (ret <= 0) {
+ if ((errno == EAGAIN || errno == EINTR || ret == 0) &&
+ (tries++ < 5))
continue;
- return -1;
+ return c ? c : -1;
}
+ if (ret > 0)
+ tries = 0;
count -= ret;
buf += ret;
c += ret;
return c;
}
+/*
+ * Close all file descriptors
+ */
+static void close_all_fds(void)
+{
+ int i, max;
+
+#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
+ max = sysconf(_SC_OPEN_MAX);
+#elif defined(HAVE_GETDTABLESIZE)
+ max = getdtablesize();
+#elif defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
+ struct rlimit rl;
+
+ getrlimit(RLIMIT_NOFILE, &rl);
+ max = rl.rlim_cur;
+#else
+ max = OPEN_MAX;
+#endif
+
+ for (i=0; i < max; i++) {
+ close(i);
+ if (i <= 2)
+ open("/dev/null", O_RDWR);
+ }
+}
+#endif /* defined(USE_UUIDD) && defined(HAVE_SYS_UN_H) */
+#pragma GCC diagnostic push
+#if !defined(USE_UUIDD) || !defined(HAVE_SYS_UN_H)
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
/*
* Try using the uuidd daemon to generate the UUID
*
ssize_t ret;
int32_t reply_len = 0, expected = 16;
struct sockaddr_un srv_addr;
+ struct stat st;
pid_t pid;
static const char *uuidd_path = UUIDD_PATH;
static int access_ret = -2;
sizeof(struct sockaddr_un)) < 0) {
if (access_ret == -2)
access_ret = access(uuidd_path, X_OK);
+ if (access_ret == 0)
+ access_ret = stat(uuidd_path, &st);
+ if (access_ret == 0 && (st.st_mode & (S_ISUID | S_ISGID)) == 0)
+ access_ret = access(UUIDD_DIR, W_OK);
if (access_ret == 0 && start_attempts++ < 5) {
if ((pid = fork()) == 0) {
- execl(uuidd_path, "uuidd", "-qT", "300",
+ close_all_fds();
+ execl(uuidd_path, "uuidd", "-qT", "300",
(char *) NULL);
exit(1);
}
#endif
return -1;
}
+#pragma GCC diagnostic pop
void uuid__generate_time(uuid_t out, int *num)
{
projects / thirdparty / e2fsprogs.git / blobdiff