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-rw-r--r--e2fsprogs/uuid/gen_uuid.c305
1 files changed, 0 insertions, 305 deletions
diff --git a/e2fsprogs/uuid/gen_uuid.c b/e2fsprogs/uuid/gen_uuid.c
deleted file mode 100644
index 9d700a0..0000000
--- a/e2fsprogs/uuid/gen_uuid.c
+++ /dev/null
@@ -1,305 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * gen_uuid.c --- generate a DCE-compatible uuid
- *
- * Copyright (C) 1996, 1997, 1998, 1999 Theodore Ts'o.
- *
- * %Begin-Header%
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, and the entire permission notice in its entirety,
- * including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 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
- * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- * %End-Header%
- */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/file.h>
-#include <sys/time.h>
-#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h>
-#endif
-#include <sys/socket.h>
-#ifdef HAVE_SYS_SOCKIO_H
-#include <sys/sockio.h>
-#endif
-#ifdef HAVE_NET_IF_H
-#include <net/if.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_NET_IF_DL_H
-#include <net/if_dl.h>
-#endif
-
-#include "uuidP.h"
-
-#ifdef HAVE_SRANDOM
-#define srand(x) srandom(x)
-#define rand() random()
-#endif
-
-static int get_random_fd(void)
-{
- struct timeval tv;
- static int fd = -2;
- int i;
-
- if (fd == -2) {
- gettimeofday(&tv, 0);
- fd = open("/dev/urandom", O_RDONLY);
- if (fd == -1)
- fd = open("/dev/random", O_RDONLY | O_NONBLOCK);
- srand((getpid() << 16) ^ getuid() ^ tv.tv_sec ^ tv.tv_usec);
- }
- /* Crank the random number generator a few times */
- gettimeofday(&tv, 0);
- for (i = (tv.tv_sec ^ tv.tv_usec) & 0x1F; i > 0; i--)
- rand();
- return fd;
-}
-
-
-/*
- * Generate a series of random bytes. Use /dev/urandom if possible,
- * and if not, use srandom/random.
- */
-static void get_random_bytes(void *buf, int nbytes)
-{
- int i, n = nbytes, fd = get_random_fd();
- int lose_counter = 0;
- unsigned char *cp = (unsigned char *) buf;
-
- if (fd >= 0) {
- while (n > 0) {
- i = read(fd, cp, n);
- if (i <= 0) {
- if (lose_counter++ > 16)
- break;
- continue;
- }
- n -= i;
- cp += i;
- 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;
- return;
-}
-
-/*
- * Get the ethernet hardware address, if we can find it...
- */
-static int get_node_id(unsigned char *node_id)
-{
-#ifdef HAVE_NET_IF_H
- int sd;
- struct ifreq ifr, *ifrp;
- struct ifconf ifc;
- char buf[1024];
- int n, i;
- unsigned char *a;
-#ifdef HAVE_NET_IF_DL_H
- struct sockaddr_dl *sdlp;
-#endif
-
-/*
- * 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
- * just sizeof(struct ifreq)
- */
-#ifdef HAVE_SA_LEN
-#ifndef max
-#define max(a,b) ((a) > (b) ? (a) : (b))
-#endif
-#define ifreq_size(i) max(sizeof(struct ifreq),\
- sizeof((i).ifr_name)+(i).ifr_addr.sa_len)
-#else
-#define ifreq_size(i) sizeof(struct ifreq)
-#endif /* HAVE_SA_LEN*/
-
- sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
- if (sd < 0) {
- return -1;
- }
- memset(buf, 0, sizeof(buf));
- ifc.ifc_len = sizeof(buf);
- ifc.ifc_buf = buf;
- if (ioctl (sd, SIOCGIFCONF, (char *)&ifc) < 0) {
- close(sd);
- return -1;
- }
- n = ifc.ifc_len;
- for (i = 0; i < n; i+= ifreq_size(*ifrp) ) {
- ifrp = (struct ifreq *)((char *) ifc.ifc_buf+i);
- strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
-#ifdef SIOCGIFHWADDR
- if (ioctl(sd, SIOCGIFHWADDR, &ifr) < 0)
- continue;
- a = (unsigned char *) &ifr.ifr_hwaddr.sa_data;
-#else
-#ifdef SIOCGENADDR
- if (ioctl(sd, SIOCGENADDR, &ifr) < 0)
- continue;
- a = (unsigned char *) ifr.ifr_enaddr;
-#else
-#ifdef HAVE_NET_IF_DL_H
- sdlp = (struct sockaddr_dl *) &ifrp->ifr_addr;
- if ((sdlp->sdl_family != AF_LINK) || (sdlp->sdl_alen != 6))
- continue;
- a = (unsigned char *) &sdlp->sdl_data[sdlp->sdl_nlen];
-#else
- /*
- * XXX we don't have a way of getting the hardware
- * address
- */
- close(sd);
- return 0;
-#endif /* HAVE_NET_IF_DL_H */
-#endif /* SIOCGENADDR */
-#endif /* SIOCGIFHWADDR */
- if (!a[0] && !a[1] && !a[2] && !a[3] && !a[4] && !a[5])
- continue;
- if (node_id) {
- memcpy(node_id, a, 6);
- close(sd);
- return 1;
- }
- }
- close(sd);
-#endif
- return 0;
-}
-
-/* Assume that the gettimeofday() has microsecond granularity */
-#define MAX_ADJUSTMENT 10
-
-static int get_clock(uint32_t *clock_high, uint32_t *clock_low, uint16_t *ret_clock_seq)
-{
- static int adjustment = 0;
- static struct timeval last = {0, 0};
- static uint16_t clock_seq;
- struct timeval tv;
- unsigned long long clock_reg;
-
-try_again:
- gettimeofday(&tv, 0);
- if ((last.tv_sec == 0) && (last.tv_usec == 0)) {
- get_random_bytes(&clock_seq, sizeof(clock_seq));
- clock_seq &= 0x3FFF;
- last = tv;
- last.tv_sec--;
- }
- if ((tv.tv_sec < last.tv_sec) ||
- ((tv.tv_sec == last.tv_sec) &&
- (tv.tv_usec < last.tv_usec))) {
- clock_seq = (clock_seq+1) & 0x3FFF;
- adjustment = 0;
- last = tv;
- } else if ((tv.tv_sec == last.tv_sec) &&
- (tv.tv_usec == last.tv_usec)) {
- if (adjustment >= MAX_ADJUSTMENT)
- goto try_again;
- adjustment++;
- } else {
- 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_high = clock_reg >> 32;
- *clock_low = clock_reg;
- *ret_clock_seq = clock_seq;
- return 0;
-}
-
-void uuid_generate_time(uuid_t out)
-{
- static unsigned char node_id[6];
- static int has_init = 0;
- struct uuid uu;
- uint32_t clock_mid;
-
- if (!has_init) {
- if (get_node_id(node_id) <= 0) {
- get_random_bytes(node_id, 6);
- /*
- * Set multicast bit, to prevent conflicts
- * with IEEE 802 addresses obtained from
- * network cards
- */
- node_id[0] |= 0x01;
- }
- has_init = 1;
- }
- get_clock(&clock_mid, &uu.time_low, &uu.clock_seq);
- uu.clock_seq |= 0x8000;
- uu.time_mid = (uint16_t) clock_mid;
- uu.time_hi_and_version = ((clock_mid >> 16) & 0x0FFF) | 0x1000;
- memcpy(uu.node, node_id, 6);
- uuid_pack(&uu, out);
-}
-
-void uuid_generate_random(uuid_t out)
-{
- uuid_t buf;
- struct uuid uu;
-
- get_random_bytes(buf, sizeof(buf));
- uuid_unpack(buf, &uu);
-
- uu.clock_seq = (uu.clock_seq & 0x3FFF) | 0x8000;
- uu.time_hi_and_version = (uu.time_hi_and_version & 0x0FFF) | 0x4000;
- uuid_pack(&uu, out);
-}
-
-/*
- * This is the generic front-end to uuid_generate_random and
- * uuid_generate_time. It uses uuid_generate_random only if
- * /dev/urandom is available, since otherwise we won't have
- * high-quality randomness.
- */
-void uuid_generate(uuid_t out)
-{
- if (get_random_fd() >= 0)
- uuid_generate_random(out);
- else
- uuid_generate_time(out);
-}