diff --git a/daemon/automount.c b/daemon/automount.c
index a12b6da..7becad5 100644
--- a/daemon/automount.c
+++ b/daemon/automount.c
@@ -58,6 +58,8 @@ const char *global_options; /* Global option, from command line */
static char *pid_file = NULL; /* File in which to keep pid */
unsigned int global_random_selection; /* use random policy when selecting
* which multi-mount host to mount */
+long global_negative_timeout = -1;
+
static int start_pipefd[2];
static int st_stat = 0;
static int *pst_stat = &st_stat;
@@ -1671,6 +1673,8 @@ static void usage(void)
" -f --foreground do not fork into background\n"
" -r --random-multimount-selection\n"
" use ramdom replicated server selection\n"
+ " -n --negative-timeout n\n"
+ " set the timeout for failed key lookups.\n"
" -O --global-options\n"
" specify global mount options\n"
" -l --set-log-priority priority path [path,...]\n"
@@ -1810,6 +1814,7 @@ int main(int argc, char *argv[])
{"define", 1, 0, 'D'},
{"foreground", 0, 0, 'f'},
{"random-multimount-selection", 0, 0, 'r'},
+ {"negative-timeout", 1, 0, 'n'},
{"global-options", 1, 0, 'O'},
{"version", 0, 0, 'V'},
{"set-log-priority", 1, 0, 'l'},
@@ -1833,7 +1838,7 @@ int main(int argc, char *argv[])
foreground = 0;
opterr = 0;
- while ((opt = getopt_long(argc, argv, "+hp:t:vdD:fVrO:l:", long_options, NULL)) != EOF) {
+ while ((opt = getopt_long(argc, argv, "+hp:t:vdD:fVrO:l:n:", long_options, NULL)) != EOF) {
switch (opt) {
case 'h':
usage();
@@ -1871,6 +1876,10 @@ int main(int argc, char *argv[])
global_random_selection = 1;
break;
+ case 'n':
+ global_negative_timeout = getnumopt(optarg, opt);
+ break;
+
case 'O':
if (!have_global_options) {
global_options = strdup(optarg);
diff --git a/include/automount.h b/include/automount.h
index b0d1a9c..4887da6 100644
--- a/include/automount.h
+++ b/include/automount.h
@@ -442,6 +442,7 @@ struct autofs_point {
unsigned int type; /* Type of map direct or indirect */
time_t exp_timeout; /* Timeout for expiring mounts */
time_t exp_runfreq; /* Frequency for polling for timeouts */
+ time_t negative_timeout; /* timeout in secs for failed mounts */
unsigned ghost; /* Enable/disable gohsted directories */
unsigned logopt; /* Per map logging */
pthread_t exp_thread; /* Thread that is expiring */
diff --git a/include/defaults.h b/include/defaults.h
index e296478..6e4f52a 100644
--- a/include/defaults.h
+++ b/include/defaults.h
@@ -22,9 +22,10 @@
#define DEFAULT_MASTER_MAP_NAME "auto.master"
-#define DEFAULT_TIMEOUT 600
-#define DEFAULT_BROWSE_MODE 1
-#define DEFAULT_LOGGING 0
+#define DEFAULT_TIMEOUT 600
+#define DEFAULT_NEGATIVE_TIMEOUT 60
+#define DEFAULT_BROWSE_MODE 1
+#define DEFAULT_LOGGING 0
#define DEFAULT_LDAP_TIMEOUT -1
#define DEFAULT_LDAP_NETWORK_TIMEOUT 8
@@ -45,6 +46,7 @@ unsigned int defaults_read_config(unsigned int);
const char *defaults_get_master_map(void);
int defaults_master_set(void);
unsigned int defaults_get_timeout(void);
+unsigned int defaults_get_negative_timeout(void);
unsigned int defaults_get_browse_mode(void);
unsigned int defaults_get_logging(void);
const char *defaults_get_ldap_server(void);
diff --git a/lib/defaults.c b/lib/defaults.c
index f494103..8149549 100644
--- a/lib/defaults.c
+++ b/lib/defaults.c
@@ -28,6 +28,7 @@
#define ENV_NAME_MASTER_MAP "MASTER_MAP_NAME"
#define ENV_NAME_TIMEOUT "TIMEOUT"
+#define ENV_NAME_NEGATIVE_TIMEOUT "NEGATIVE_TIMEOUT"
#define ENV_NAME_BROWSE_MODE "BROWSE_MODE"
#define ENV_NAME_LOGGING "LOGGING"
@@ -308,6 +309,7 @@ unsigned int defaults_read_config(unsigned int to_syslog)
if (check_set_config_value(key, ENV_NAME_MASTER_MAP, value, to_syslog) ||
check_set_config_value(key, ENV_NAME_TIMEOUT, value, to_syslog) ||
+ check_set_config_value(key, ENV_NAME_NEGATIVE_TIMEOUT, value, to_syslog) ||
check_set_config_value(key, ENV_NAME_BROWSE_MODE, value, to_syslog) ||
check_set_config_value(key, ENV_NAME_LOGGING, value, to_syslog) ||
check_set_config_value(key, ENV_LDAP_TIMEOUT, value, to_syslog) ||
@@ -370,6 +372,17 @@ unsigned int defaults_get_timeout(void)
return (unsigned int) timeout;
}
+unsigned int defaults_get_negative_timeout(void)
+{
+ long n_timeout;
+
+ n_timeout = get_env_number(ENV_NAME_NEGATIVE_TIMEOUT);
+ if (n_timeout <= 0)
+ n_timeout = DEFAULT_NEGATIVE_TIMEOUT;
+
+ return (unsigned int) n_timeout;
+}
+
unsigned int defaults_get_browse_mode(void)
{
int res;
diff --git a/lib/master.c b/lib/master.c
index 2188bca..c001d20 100644
--- a/lib/master.c
+++ b/lib/master.c
@@ -30,6 +30,8 @@
/* The root of the map entry tree */
struct master *master_list = NULL;
+extern long global_negative_timeout;
+
/* Attribute to create detached thread */
extern pthread_attr_t thread_attr;
@@ -68,6 +70,14 @@ int master_add_autofs_point(struct master_mapent *entry,
ap->exp_thread = 0;
ap->readmap_thread = 0;
ap->exp_timeout = timeout;
+ /*
+ * Program command line option overrides config.
+ * We can't use 0 negative timeout so use default.
+ */
+ if (global_negative_timeout <= 0)
+ ap->negative_timeout = defaults_get_negative_timeout();
+ else
+ ap->negative_timeout = global_negative_timeout;
ap->exp_runfreq = (timeout + CHECK_RATIO - 1) / CHECK_RATIO;
ap->ghost = ghost;
diff --git a/lib/master_parse.y b/lib/master_parse.y
index a767f9e..b450122 100644
--- a/lib/master_parse.y
+++ b/lib/master_parse.y
@@ -55,6 +55,7 @@ static char *path;
static char *type;
static char *format;
static long timeout;
+static long negative_timeout;
static unsigned ghost;
extern unsigned global_random_selection;
static unsigned random_selection;
@@ -95,7 +96,8 @@ static int master_fprintf(FILE *, char *, ...);
%token COMMENT
%token MAP
-%token OPT_TIMEOUT OPT_NOGHOST OPT_GHOST OPT_VERBOSE OPT_DEBUG OPT_RANDOM
+%token OPT_TIMEOUT OPT_NTIMEOUT OPT_NOGHOST OPT_GHOST OPT_VERBOSE
+%token OPT_DEBUG OPT_RANDOM
%token COLON COMMA NL DDASH
%type <strtype> map
%type <strtype> options
@@ -542,6 +544,7 @@ option: daemon_option
;
daemon_option: OPT_TIMEOUT NUMBER { timeout = $2; }
+ | OPT_NTIMEOUT NUMBER { negative_timeout = $2; }
| OPT_NOGHOST { ghost = 0; }
| OPT_GHOST { ghost = 1; }
| OPT_VERBOSE { verbose = 1; }
@@ -603,6 +606,7 @@ static void local_init_vars(void)
verbose = 0;
debug = 0;
timeout = -1;
+ negative_timeout = 0;
ghost = defaults_get_browse_mode();
random_selection = global_random_selection;
tmp_argv = NULL;
@@ -793,6 +797,8 @@ int master_parse_entry(const char *buffer, unsigned int default_timeout, unsigne
}
}
entry->ap->random_selection = random_selection;
+ if (negative_timeout)
+ entry->ap->negative_timeout = negative_timeout;
/*
source = master_find_map_source(entry, type, format,
diff --git a/lib/master_tok.l b/lib/master_tok.l
index 36aa785..d908047 100644
--- a/lib/master_tok.l
+++ b/lib/master_tok.l
@@ -118,6 +118,7 @@ MTYPE ((file|program|yp|nis|nisplus|ldap|ldaps|hesiod|userdir)(,(sun|hesiod))?(
OPTTOUT (-t{OPTWS}|-t{OPTWS}={OPTWS}|--timeout{OPTWS}|--timeout{OPTWS}={OPTWS})
+OPTNTOUT (-n{OPTWS}|-n{OPTWS}={OPTWS}|--negative-timeout{OPTWS}|--negative-timeout{OPTWS}={OPTWS})
%%
@@ -321,6 +322,8 @@ OPTTOUT (-t{OPTWS}|-t{OPTWS}={OPTWS}|--timeout{OPTWS}|--timeout{OPTWS}={OPTWS})
{OPTTOUT}/{NUMBER} { return(OPT_TIMEOUT); }
+ {OPTNTOUT}/{NUMBER} { return(OPT_NTIMEOUT); }
+
{NUMBER} {
master_lval.longtype = atol(master_text);
return(NUMBER);
diff --git a/man/auto.master.5.in b/man/auto.master.5.in
index 68447e0..d488960 100644
--- a/man/auto.master.5.in
+++ b/man/auto.master.5.in
@@ -152,6 +152,11 @@ Enables the use of ramdom selection when choosing a host from a
list of replicated servers. This option is applied to this mount
only, overriding the global setting that may be specified on the
command line.
+.TP
+.I "\-n, \-\-negative\-timeout <seconds>"
+Set the timeout for caching failed key lookups. This option can be
+used to override the global default given either on the command line
+or in the configuration.
.SH GENERAL SYSTEM DEFAULTS CONFIGURATION
.P
The default value of several general settings may be changed in the
@@ -164,6 +169,11 @@ They are:
.B TIMEOUT
sets the default mount timeout (program default 600).
.TP
+.B NEGATIVE_TIMEOUT
+Set the default timeout for caching failed key lookups (program default
+60). If the equivalent command line option is given it will override this
+setting.
+.TP
.B BROWSE_MODE
Maps are browsable by default (program default "yes").
.TP
diff --git a/man/automount.8 b/man/automount.8
index 5cd63c7..59ad50e 100644
--- a/man/automount.8
+++ b/man/automount.8
@@ -34,6 +34,9 @@ Set the global minimum timeout, in seconds, until directories
are unmounted. The default is 10 minutes. Setting the timeout
to zero disables umounts completely.
.TP
+.I "\-n <seconds>, \-\-negative\-timeout <seconds>"
+Set the default timeout for caching failed key lookups. The default is 60 seconds.
+.TP
.I "\-v, \-\-verbose"
Enables logging of general status and progress messages for all
autofs managed mounts.
diff --git a/modules/lookup_file.c b/modules/lookup_file.c
index c093415..1007de4 100644
--- a/modules/lookup_file.c
+++ b/modules/lookup_file.c
@@ -1126,7 +1126,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
rv = cache_update(mc, source, key, NULL, now);
if (rv != CHE_FAIL) {
me = cache_lookup_distinct(mc, key);
- me->status = now + NEGATIVE_TIMEOUT;
+ me->status = now + ap->negative_timeout;
}
cache_unlock(mc);
}
diff --git a/modules/lookup_hosts.c b/modules/lookup_hosts.c
index d746e42..1ef420e 100644
--- a/modules/lookup_hosts.c
+++ b/modules/lookup_hosts.c
@@ -138,7 +138,10 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
cache_readlock(mc);
me = cache_lookup_distinct(mc, name);
- if (!me) {
+ if (me && me->status >= time(NULL)) {
+ cache_unlock(mc);
+ return NSS_STATUS_NOTFOUND;
+ } else if (!me) {
cache_unlock(mc);
/*
* We haven't read the list of hosts into the
@@ -192,10 +195,22 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
ret = ctxt->parse->parse_mount(ap, name, name_len,
mapent, ctxt->parse->context);
- if (!ret)
- return NSS_STATUS_SUCCESS;
-
- return NSS_STATUS_TRYAGAIN;
+ if (ret) {
+ time_t now = time(NULL);
+ int rv = CHE_OK;
+
+ cache_writelock(mc);
+ me = cache_lookup_distinct(mc, name);
+ if (!me)
+ rv = cache_update(mc, source, name, NULL, now);
+ if (rv != CHE_FAIL) {
+ me = cache_lookup_distinct(mc, name);
+ me->status = now + ap->negative_timeout;
+ }
+ cache_unlock(mc);
+ return NSS_STATUS_TRYAGAIN;
+ }
+ return NSS_STATUS_SUCCESS;
}
done:
/*
@@ -267,8 +282,21 @@ done:
mapent, ctxt->parse->context);
free(mapent);
- if (ret)
+ if (ret) {
+ time_t now = time(NULL);
+ int rv = CHE_OK;
+
+ cache_writelock(mc);
+ me = cache_lookup_distinct(mc, name);
+ if (!me)
+ rv = cache_update(mc, source, name, NULL, now);
+ if (rv != CHE_FAIL) {
+ me = cache_lookup_distinct(mc, name);
+ me->status = now + ap->negative_timeout;
+ }
+ cache_unlock(mc);
return NSS_STATUS_TRYAGAIN;
+ }
return NSS_STATUS_SUCCESS;
}
diff --git a/modules/lookup_ldap.c b/modules/lookup_ldap.c
index 8719af9..4dea3b2 100644
--- a/modules/lookup_ldap.c
+++ b/modules/lookup_ldap.c
@@ -2125,7 +2125,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
rv = cache_update(mc, source, key, NULL, now);
if (rv != CHE_FAIL) {
me = cache_lookup_distinct(mc, key);
- me->status = now + NEGATIVE_TIMEOUT;
+ me->status = now + ap->negative_timeout;
}
cache_unlock(mc);
}
diff --git a/modules/lookup_nisplus.c b/modules/lookup_nisplus.c
index bcdaeeb..e948c14 100644
--- a/modules/lookup_nisplus.c
+++ b/modules/lookup_nisplus.c
@@ -547,7 +547,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
rv = cache_update(mc, source, key, NULL, now);
if (rv != CHE_FAIL) {
me = cache_lookup_distinct(mc, key);
- me->status = time(NULL) + NEGATIVE_TIMEOUT;
+ me->status = time(NULL) + ap->negative_timeout;
}
cache_unlock(mc);
}
diff --git a/modules/lookup_program.c b/modules/lookup_program.c
index e28168e..7c266d6 100644
--- a/modules/lookup_program.c
+++ b/modules/lookup_program.c
@@ -134,7 +134,10 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
/* Catch installed direct offset triggers */
cache_readlock(mc);
me = cache_lookup_distinct(mc, name);
- if (!me) {
+ if (me && me->status >= time(NULL)) {
+ cache_unlock(mc);
+ return NSS_STATUS_NOTFOUND;
+ } else if (!me) {
cache_unlock(mc);
/*
* If there's a '/' in the name and the offset is not in
@@ -147,15 +150,33 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
}
} else {
cache_unlock(mc);
+
/* Otherwise we found a valid offset so try mount it */
debug(ap->logopt, MODPREFIX "%s -> %s", name, me->mapent);
- master_source_current_wait(ap->entry);
- ap->entry->current = source;
-
- ret = ctxt->parse->parse_mount(ap, name, name_len,
- me->mapent, ctxt->parse->context);
- goto out_free;
+ /*
+ * If this is a request for an offset mount (whose entry
+ * must be present in the cache to be valid) or the entry
+ * is newer than the negative timeout value then just
+ * try and mount it. Otherwise try and remove it and
+ * proceed with the program map lookup.
+ */
+ if (strchr(name, '/') ||
+ me->age + ap->negative_timeout > time(NULL)) {
+ master_source_current_wait(ap->entry);
+ ap->entry->current = source;
+ ret = ctxt->parse->parse_mount(ap, name,
+ name_len, me->mapent, ctxt->parse->context);
+ goto out_free;
+ } else {
+ if (me->multi) {
+ warn(ap->logopt, MODPREFIX
+ "unexpected lookup for active multi-mount"
+ " key %s, returning fail", name);
+ return NSS_STATUS_UNAVAIL;
+ }
+ cache_delete(mc, name);
+ }
}
mapent = (char *) malloc(MAPENT_MAX_LEN + 1);
@@ -356,8 +377,21 @@ out_free:
if (mapent)
free(mapent);
- if (ret)
+ if (ret) {
+ time_t now = time(NULL);
+ int rv = CHE_OK;
+
+ cache_writelock(mc);
+ me = cache_lookup_distinct(mc, name);
+ if (!me)
+ rv = cache_update(mc, source, name, NULL, now);
+ if (rv != CHE_FAIL) {
+ me = cache_lookup_distinct(mc, name);
+ me->status = now + ap->negative_timeout;
+ }
+ cache_unlock(mc);
return NSS_STATUS_UNAVAIL;
+ }
return NSS_STATUS_SUCCESS;
}
diff --git a/modules/lookup_yp.c b/modules/lookup_yp.c
index 7ba6940..6c20145 100644
--- a/modules/lookup_yp.c
+++ b/modules/lookup_yp.c
@@ -639,7 +639,7 @@ int lookup_mount(struct autofs_point *ap, const char *name, int name_len, void *
rv = cache_update(mc, source, key, NULL, now);
if (rv != CHE_FAIL) {
me = cache_lookup_distinct(mc, key);
- me->status = now + NEGATIVE_TIMEOUT;
+ me->status = now + ap->negative_timeout;
}
cache_unlock(mc);
}
diff --git a/redhat/autofs.sysconfig.in b/redhat/autofs.sysconfig.in
index f01ee5f..636763a 100644
--- a/redhat/autofs.sysconfig.in
+++ b/redhat/autofs.sysconfig.in
@@ -9,6 +9,11 @@
#
TIMEOUT=300
#
+# NEGATIVE_TIMEOUT - set the default negative timeout for
+# failed mount attempts (default 60).
+#
+#NEGATIVE_TIMEOUT=60
+#
# BROWSE_MODE - maps are browsable by default.
#
BROWSE_MODE="no"
diff --git a/samples/autofs.conf.default.in b/samples/autofs.conf.default.in
index 028341c..086ba4f 100644
--- a/samples/autofs.conf.default.in
+++ b/samples/autofs.conf.default.in
@@ -9,6 +9,11 @@
#
TIMEOUT=300
#
+# NEGATIVE_TIMEOUT - set the default negative timeout for
+# failed mount attempts (default 60).
+#
+#NEGATIVE_TIMEOUT=60
+#
# BROWSE_MODE - maps are browsable by default.
#
BROWSE_MODE="no"