Re: Mount point not auto unmounted after system date/time change

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>From aef6d0ff19eb65634a0cd2928b97c22b25451471 Mon Sep 17 00:00:00 2001
From: Yu Ning <ning.yu@xxxxxxxxxx>
Date: Wed, 16 Sep 2015 18:22:51 +0800
Subject: [PATCH 3/3] Use monotonic clock instead of time().

A new function monotonic_time() is introduced in automount.h as a
monotonic version of time(), all the calls to time() have been switched
to use this new function.
---
 daemon/automount.c        |  4 ++--
 daemon/direct.c           |  4 ++--
 daemon/indirect.c         |  4 ++--
 daemon/lookup.c           |  6 +++---
 daemon/state.c            |  2 +-
 include/automount.h       |  9 +++++++++
 lib/alarm.c               |  4 ++--
 lib/cache.c               |  2 +-
 lib/master.c              |  4 ++--
 modules/dclist.c          |  2 +-
 modules/lookup_file.c     |  8 ++++----
 modules/lookup_hesiod.c   |  6 +++---
 modules/lookup_hosts.c    |  4 ++--
 modules/lookup_ldap.c     | 10 +++++-----
 modules/lookup_nisplus.c  | 10 +++++-----
 modules/lookup_program.c  | 10 +++++-----
 modules/lookup_sss.c      |  6 +++---
 modules/lookup_userhome.c |  2 +-
 modules/lookup_yp.c       |  8 ++++----
 modules/mount_autofs.c    |  2 +-
 modules/parse_amd.c       |  2 +-
 modules/replicated.c      |  4 ++--
 22 files changed, 61 insertions(+), 52 deletions(-)

diff --git a/daemon/automount.c b/daemon/automount.c
index 229cb1a..a49ceee 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -1454,7 +1454,7 @@ static void *statemachine(void *arg)
  break;

  case SIGHUP:
- do_hup_signal(master_list, time(NULL));
+ do_hup_signal(master_list, monotonic_time(NULL));
  break;

  default:
@@ -2004,7 +2004,7 @@ int main(int argc, char *argv[])
  unsigned ghost, logging, daemon_check;
  unsigned dumpmaps, foreground, have_global_options;
  time_t timeout;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  struct rlimit rlim;
  const char *options = "+hp:t:vmdD:fVrO:l:n:CF";
  static const struct option long_options[] = {
diff --git a/daemon/direct.c b/daemon/direct.c
index cdd7f49..470a719 100644
--- a/daemon/direct.c
+++ b/daemon/direct.c
@@ -464,7 +464,7 @@ int mount_autofs_direct(struct autofs_point *ap)
  struct mapent_cache *nc, *mc;
  struct mapent *me, *ne, *nested;
  struct mnt_list *mnts;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);

  if (strcmp(ap->path, "/-")) {
  error(ap->logopt, "expected direct map, exiting");
@@ -1388,7 +1388,7 @@ int handle_packet_missing_direct(struct
autofs_point *ap, autofs_packet_missing_
  }

  /* Check if we recorded a mount fail for this key */
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  ops->send_fail(ap->logopt,
        ioctlfd, pkt->wait_queue_token, -ENOENT);
  ops->close(ap->logopt, ioctlfd);
diff --git a/daemon/indirect.c b/daemon/indirect.c
index 0ea9b19..b2015f9 100644
--- a/daemon/indirect.c
+++ b/daemon/indirect.c
@@ -197,7 +197,7 @@ out_err:

 int mount_autofs_indirect(struct autofs_point *ap, const char *root)
 {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  int status;
  int map;

@@ -818,7 +818,7 @@ int handle_packet_missing_indirect(struct
autofs_point *ap, autofs_packet_missin
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, pkt->name, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  ops->send_fail(ap->logopt, ap->ioctlfd,
        pkt->wait_queue_token, -ENOENT);
  cache_unlock(me->mc);
diff --git a/daemon/lookup.c b/daemon/lookup.c
index 62071df..9a8fa7e 100644
--- a/daemon/lookup.c
+++ b/daemon/lookup.c
@@ -875,7 +875,7 @@ static int lookup_name_file_source_instance(struct
autofs_point *ap, struct map_
  struct map_source *instance;
  char src_file[] = "file";
  char src_prog[] = "program";
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  struct stat st;
  char *type, *format;

@@ -915,7 +915,7 @@ static int lookup_name_source_instance(struct
autofs_point *ap, struct map_sourc
 {
  struct map_source *instance;
  const char *format;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);

  if (*name == '/' && map->flags & MAP_FLAG_FORMAT_AMD)
  return lookup_amd_instance(ap, map, name, name_len);
@@ -1079,7 +1079,7 @@ static void update_negative_cache(struct
autofs_point *ap, struct map_source *so
  else
  map = entry->maps;
  if (map) {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  int rv = CHE_FAIL;

  cache_writelock(map->mc);
diff --git a/daemon/state.c b/daemon/state.c
index 3174a9c..08828b1 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -553,7 +553,7 @@ static unsigned int st_readmap(struct autofs_point *ap)
  pthread_t thid;
  struct readmap_args *ra;
  int status;
- int now = time(NULL);
+ int now = monotonic_time(NULL);

  debug(ap->logopt, "state %d path %s", ap->state, ap->path);

diff --git a/include/automount.h b/include/automount.h
index 447aba1..7bbf859 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -565,6 +565,15 @@ do { \
  fatal(_m_unlock); \
 } while(0)

+static inline time_t monotonic_time(time_t *t)
+{
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (t)
+ *t = (time_t) ts.tv_sec;
+ return (time_t) ts.tv_sec;
+}
+
 /* Expire alarm handling routines */
 int alarm_start_handler(void);
 int alarm_add(struct autofs_point *ap, time_t seconds);
diff --git a/lib/alarm.c b/lib/alarm.c
index 5b98b2d..7563c9b 100755
--- a/lib/alarm.c
+++ b/lib/alarm.c
@@ -46,7 +46,7 @@ int alarm_add(struct autofs_point *ap, time_t seconds)
  struct list_head *head;
  struct list_head *p;
  struct alarm *new;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  time_t next_alarm = 0;
  unsigned int empty = 1;
  int status;
@@ -175,7 +175,7 @@ static void *alarm_handler(void *arg)

  first = list_entry(head->next, struct alarm, list);

- now = time(NULL);
+ now = monotonic_time(NULL);

  if (first->time > now) {
  struct timespec nsecs;
diff --git a/lib/cache.c b/lib/cache.c
index 631d275..44e323d 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -775,7 +775,7 @@ void cache_update_negative(struct mapent_cache *mc,
    struct map_source *ms, const char *key,
    time_t timeout)
 {
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  struct mapent *me;
  int rv = CHE_OK;

diff --git a/lib/master.c b/lib/master.c
index 6c38b1c..cca8371 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -1483,7 +1483,7 @@ int dump_map(struct master *master, const char
*type, const char *name)
  struct map_source *source;
  struct master_mapent *this;
  struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);

  this = list_entry(p, struct master_mapent, list);
  p = p->next;
@@ -1601,7 +1601,7 @@ int master_show_mounts(struct master *master)
  struct map_source *source;
  struct master_mapent *this;
  struct autofs_point *ap;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  unsigned int count = 0;

  this = list_entry(p, struct master_mapent, list);
diff --git a/modules/dclist.c b/modules/dclist.c
index af21ce0..4daa199 100644
--- a/modules/dclist.c
+++ b/modules/dclist.c
@@ -568,7 +568,7 @@ struct dclist *get_dc_list(unsigned int logopt,
const char *uri)
  if (!list)
  goto out_error;

- dclist->expire = time(NULL) + min_ttl;
+ dclist->expire = monotonic_time(NULL) + min_ttl;
  dclist->uri = list;

  return dclist;
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index 7c982c6..4e52fce 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -743,7 +743,7 @@ static int match_key(struct autofs_point *ap,
 {
  char buf[MAX_ERR_BUF];
  struct mapent_cache *mc;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  char *lkp_key;
  char *prefix;
  size_t map_key_len;
@@ -808,7 +808,7 @@ static int lookup_one(struct autofs_point *ap,
  struct mapent_cache *mc = source->mc;
  char mkey[KEY_MAX_LEN + 1];
  char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  FILE *f;
  unsigned int k_len, m_len;
  int entry, ret;
@@ -914,7 +914,7 @@ static int lookup_wild(struct autofs_point *ap,
  struct mapent_cache *mc;
  char mkey[KEY_MAX_LEN + 1];
  char mapent[MAPENT_MAX_LEN + 1];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  FILE *f;
  unsigned int k_len, m_len;
  int entry, ret;
@@ -1118,7 +1118,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, key, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/lookup_hesiod.c b/modules/lookup_hesiod.c
index 526f294..9da4f8e 100644
--- a/modules/lookup_hesiod.c
+++ b/modules/lookup_hesiod.c
@@ -163,7 +163,7 @@ static int lookup_one(struct autofs_point *ap,
  }

  cache_writelock(mc);
- ret = cache_update(mc, source, key, best_record, time(NULL));
+ ret = cache_update(mc, source, key, best_record, monotonic_time(NULL));
  cache_unlock(mc);
  if (ret == CHE_FAIL) {
  hesiod_free_list(ctxt->hesiod_context, hes_result);
@@ -228,7 +228,7 @@ static int lookup_one_amd(struct autofs_point *ap,
  }

  cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, *hes_result, time(NULL));
+ ret = cache_update(mc, source, lkp_key, *hes_result, monotonic_time(NULL));
  cache_unlock(mc);

  if (hes_result)
@@ -339,7 +339,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, name, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index 0d48356..8c4bbd9 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -284,7 +284,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  struct mapent *me;
  char *mapent = NULL;
  int mapent_len;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  int ret;

  source = ap->entry->current;
@@ -296,7 +296,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, name, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 5da613e..d45e7d1 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -944,7 +944,7 @@ static LDAP *do_reconnect(unsigned logopt, struct
lookup_context *ctxt)

  uris_mutex_lock(ctxt);
  if (ctxt->dclist) {
- if (!ldap || ctxt->dclist->expire < time(NULL)) {
+ if (!ldap || ctxt->dclist->expire < monotonic_time(NULL)) {
  free_dclist(ctxt->dclist);
  ctxt->dclist = NULL;
  }
@@ -2851,7 +2851,7 @@ static int lookup_one(struct autofs_point *ap,
struct map_source *source,
  struct mapent_cache *mc;
  int rv, i, l, ql, count;
  char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  char *query;
  LDAPMessage *result = NULL, *e;
  char *class, *info, *entry;
@@ -3214,7 +3214,7 @@ static int lookup_one_amd(struct autofs_point *ap,
  struct berval **bvKey;
  struct berval **bvValues;
  char buf[MAX_ERR_BUF];
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  int rv, l, ql, count;
  int ret = CHE_MISSING;

@@ -3417,7 +3417,7 @@ static int check_map_indirect(struct autofs_point *ap,
  unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
  struct mapent_cache *mc;
  struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  time_t t_last_read;
  int ret, cur_state;
  int status;
@@ -3555,7 +3555,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, key, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index d5eba47..17d3dde 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -288,7 +288,7 @@ static int lookup_one(struct autofs_point *ap,
  nis_result *result;
  nis_object *this;
  char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  int ret, cur_state;
  char buf[MAX_ERR_BUF];

@@ -400,7 +400,7 @@ static int lookup_wild(struct autofs_point *ap,
  nis_result *result;
  nis_object *this;
  char *mapent;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  int ret, cur_state;
  char buf[MAX_ERR_BUF];

@@ -487,7 +487,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
  mapent = ENTRY_VAL(this, 1);

  cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
  cache_unlock(mc);

  nis_freeresult(result);
@@ -505,7 +505,7 @@ static int check_map_indirect(struct autofs_point *ap,
  unsigned int is_amd_format = source->flags & MAP_FLAG_FORMAT_AMD;
  struct mapent_cache *mc;
  struct mapent *me, *exists;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  time_t t_last_read;
  int ret = 0;

@@ -650,7 +650,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, key, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index a3a7e98..eff774b 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -369,7 +369,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
  while (isblank(*start))
  start++;
  cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", start, time(NULL));
+ ret = cache_update(mc, source, "/defaults", start, monotonic_time(NULL));
  cache_unlock(mc);
  if (ret == CHE_FAIL) {
  free(ment);
@@ -438,7 +438,7 @@ static int match_key(struct autofs_point *ap,
  start++;
  }
  cache_writelock(mc);
- ret = cache_update(mc, source, lkp_key, start, time(NULL));
+ ret = cache_update(mc, source, lkp_key, start, monotonic_time(NULL));
  cache_unlock(mc);
  if (ret == CHE_FAIL) {
  free(ment);
@@ -491,7 +491,7 @@ static int match_key(struct autofs_point *ap,
  while (isblank(*start))
  start++;
  cache_writelock(mc);
- ret = cache_update(mc, source, match, start, time(NULL));
+ ret = cache_update(mc, source, match, start, monotonic_time(NULL));
  cache_unlock(mc);
  if (ret == CHE_FAIL) {
  free(match);
@@ -537,7 +537,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, name, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
@@ -586,7 +586,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  * proceed with the program map lookup.
  */
  if (strchr(name, '/') ||
-    me->age + ap->negative_timeout > time(NULL)) {
+    me->age + ap->negative_timeout > monotonic_time(NULL)) {
  char *ent = NULL;

  if (me->mapent) {
diff --git a/modules/lookup_sss.c b/modules/lookup_sss.c
index 528ab41..d685ccf 100644
--- a/modules/lookup_sss.c
+++ b/modules/lookup_sss.c
@@ -374,7 +374,7 @@ static int lookup_one(struct autofs_point *ap,
  struct mapent_cache *mc;
  struct mapent *we;
  void *sss_ctxt = NULL;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  char buf[MAX_ERR_BUF];
  char *value = NULL;
  char *s_key;
@@ -491,7 +491,7 @@ static int check_map_indirect(struct autofs_point *ap,
  struct map_source *source;
  struct mapent_cache *mc;
  struct mapent *me;
- time_t now = time(NULL);
+ time_t now = monotonic_time(NULL);
  time_t t_last_read;
  int ret, cur_state;

@@ -585,7 +585,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, key, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/lookup_userhome.c b/modules/lookup_userhome.c
index fb3caaa..d0c3e80 100644
--- a/modules/lookup_userhome.c
+++ b/modules/lookup_userhome.c
@@ -77,7 +77,7 @@ int lookup_mount(struct autofs_point *ap, const char
*name, int name_len, void *
  }

  cache_writelock(mc);
- ret = cache_update(mc, source, name, NULL, time(NULL));
+ ret = cache_update(mc, source, name, NULL, monotonic_time(NULL));
  cache_unlock(mc);

  if (ret == CHE_FAIL) {
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index fcf470a..3ffa4b6 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -405,7 +405,7 @@ static int lookup_one(struct autofs_point *ap,
  char *mapname;
  char *mapent;
  int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  int ret;

  mc = source->mc;
@@ -517,7 +517,7 @@ static int lookup_wild(struct autofs_point *ap,
  char *mapname;
  char *mapent;
  int mapent_len;
- time_t age = time(NULL);
+ time_t age = monotonic_time(NULL);
  int ret;

  mc = source->mc;
@@ -598,7 +598,7 @@ static int lookup_amd_defaults(struct autofs_point *ap,
  return CHE_FAIL;

  cache_writelock(mc);
- ret = cache_update(mc, source, "/defaults", mapent, time(NULL));
+ ret = cache_update(mc, source, "/defaults", mapent, monotonic_time(NULL));
  cache_unlock(mc);

  return ret;
@@ -753,7 +753,7 @@ int lookup_mount(struct autofs_point *ap, const
char *name, int name_len, void *
  /* Check if we recorded a mount fail for this key anywhere */
  me = lookup_source_mapent(ap, key, LKP_DISTINCT);
  if (me) {
- if (me->status >= time(NULL)) {
+ if (me->status >= monotonic_time(NULL)) {
  cache_unlock(me->mc);
  return NSS_STATUS_NOTFOUND;
  } else {
diff --git a/modules/mount_autofs.c b/modules/mount_autofs.c
index 4846e7f..05ea1c1 100644
--- a/modules/mount_autofs.c
+++ b/modules/mount_autofs.c
@@ -242,7 +242,7 @@ int mount_mount(struct autofs_point *ap, const
char *root, const char *name,

  source = master_add_map_source(entry,
        info->type, info->format,
-       time(NULL), argc, argv);
+       monotonic_time(NULL), argc, argv);
  if (!source) {
  error(ap->logopt,
       MODPREFIX "failed to add map source to entry");
diff --git a/modules/parse_amd.c b/modules/parse_amd.c
index 899be40..6e29c6c 100644
--- a/modules/parse_amd.c
+++ b/modules/parse_amd.c
@@ -1181,7 +1181,7 @@ static int do_host_mount(struct autofs_point
*ap, const char *name,
  "hosts", "sun", argc, pargv);
  if (!instance) {
  instance = master_add_source_instance(source,
- "hosts", "sun", time(NULL), argc, pargv);
+ "hosts", "sun", monotonic_time(NULL), argc, pargv);
  if (!instance) {
  error(ap->logopt, MODPREFIX
      "failed to create source instance for hosts map");
diff --git a/modules/replicated.c b/modules/replicated.c
index 0f0cc51..8da1148 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -69,14 +69,14 @@ void seed_random(void)

  fd = open_fd("/dev/urandom", O_RDONLY);
  if (fd < 0) {
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));
  return;
  }

  if (read(fd, &seed, sizeof(seed)) != -1)
  srandom(seed);
  else
- srandom(time(NULL));
+ srandom(monotonic_time(NULL));

  close(fd);

-- 
1.9.1
--
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