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autofs-5.1.5 - always use PROC_MOUNTS to make mount lists
From: Ian Kent <raven@themaw.net>
If it's necessary to read a mount table then always use the proc file
system mount table.
This could be very inefficient for cases where the mtab (_PATH_MOUNTED)
is specified but the mtab has been a symlink to the proc mount tables
for quite a while now so it doesn't make any difference always using
the proc tables.
Signed-off-by: Ian Kent <raven@themaw.net>
---
CHANGELOG | 1 +
daemon/automount.c | 6 +++---
daemon/direct.c | 14 +++++++-------
daemon/indirect.c | 8 ++++----
daemon/lookup.c | 4 ++--
daemon/spawn.c | 2 +-
daemon/state.c | 2 +-
include/mounts.h | 6 +++---
lib/mounts.c | 40 ++++++++++++++++++++--------------------
modules/parse_amd.c | 4 ++--
10 files changed, 44 insertions(+), 43 deletions(-)
--- autofs-5.1.4.orig/CHANGELOG
+++ autofs-5.1.4/CHANGELOG
@@ -65,6 +65,7 @@ xx/xx/2018 autofs-5.1.5
- add config option for "ignore" mount option
- use bit flags for autofs mount types in mnt_list.
- use mp instead of path in mnt_list entries.
+- always use PROC_MOUNTS to make mount lists.
19/12/2017 autofs-5.1.4
- fix spec file url.
--- autofs-5.1.4.orig/daemon/automount.c
+++ autofs-5.1.4/daemon/automount.c
@@ -333,7 +333,7 @@ static int walk_tree(const char *base, i
struct stat st, *pst = &st;
int ret;
- if (!is_mounted(_PATH_MOUNTED, base, MNTS_REAL))
+ if (!is_mounted(base, MNTS_REAL))
ret = lstat(base, pst);
else {
pst = NULL;
@@ -593,11 +593,11 @@ static int umount_subtree_mounts(struct
* If this is the root of a multi-mount we've had to umount
* it already to ensure it's ok to remove any offset triggers.
*/
- if (!is_mm_root && is_mounted(_PATH_MOUNTED, path, MNTS_REAL)) {
+ if (!is_mm_root && is_mounted(path, MNTS_REAL)) {
struct amd_entry *entry;
debug(ap->logopt, "unmounting dir = %s", path);
if (umount_ent(ap, path) &&
- is_mounted(_PATH_MOUNTED, path, MNTS_REAL)) {
+ is_mounted(path, MNTS_REAL)) {
warn(ap->logopt, "could not umount dir %s", path);
left++;
goto done;
--- autofs-5.1.4.orig/daemon/direct.c
+++ autofs-5.1.4/daemon/direct.c
@@ -207,7 +207,7 @@ int umount_autofs_direct(struct autofs_p
struct mnt_list *mnts;
struct mapent *me, *ne;
- mnts = tree_make_mnt_tree(_PROC_MOUNTS, "/");
+ mnts = tree_make_mnt_tree("/");
pthread_cleanup_push(mnts_cleanup, mnts);
nc = ap->entry->master->nc;
cache_readlock(nc);
@@ -515,7 +515,7 @@ int mount_autofs_direct(struct autofs_po
return -1;
}
- mnts = tree_make_mnt_tree(_PROC_MOUNTS, "/");
+ mnts = tree_make_mnt_tree("/");
pthread_cleanup_push(mnts_cleanup, mnts);
pthread_cleanup_push(master_source_lock_cleanup, ap->entry);
master_source_readlock(ap->entry);
@@ -583,7 +583,7 @@ int umount_autofs_offset(struct autofs_p
int opened = 0;
if (me->ioctlfd != -1) {
- if (is_mounted(_PATH_MOUNTED, me->key, MNTS_REAL)) {
+ if (is_mounted(me->key, MNTS_REAL)) {
error(ap->logopt,
"attempt to umount busy offset %s", me->key);
return 1;
@@ -591,7 +591,7 @@ int umount_autofs_offset(struct autofs_p
ioctlfd = me->ioctlfd;
} else {
/* offset isn't mounted, return success and try to recover */
- if (!is_mounted(_PROC_MOUNTS, me->key, MNTS_AUTOFS)) {
+ if (!is_mounted(me->key, MNTS_AUTOFS)) {
debug(ap->logopt,
"offset %s not mounted",
me->key);
@@ -707,7 +707,7 @@ int mount_autofs_offset(struct autofs_po
if (!(ret == -1 && errno == ENOENT))
return MOUNT_OFFSET_FAIL;
} else {
- if (is_mounted(_PROC_MOUNTS, me->key, MNTS_AUTOFS)) {
+ if (is_mounted(me->key, MNTS_AUTOFS)) {
if (ap->state != ST_READMAP)
warn(ap->logopt,
"trigger %s already mounted", me->key);
@@ -781,7 +781,7 @@ int mount_autofs_offset(struct autofs_po
* the kernel NFS client.
*/
if (me->multi != me &&
- is_mounted(_PROC_MOUNTS, mountpoint, MNTS_REAL))
+ is_mounted(mountpoint, MNTS_REAL))
return MOUNT_OFFSET_IGNORE;
/*
@@ -901,7 +901,7 @@ void *expire_proc_direct(void *arg)
left = 0;
- mnts = tree_make_mnt_tree(_PROC_MOUNTS, "/");
+ mnts = tree_make_mnt_tree("/");
pthread_cleanup_push(mnts_cleanup, mnts);
/* Get a list of mounts select real ones and expire them if possible */
--- autofs-5.1.4.orig/daemon/indirect.c
+++ autofs-5.1.4/daemon/indirect.c
@@ -104,7 +104,7 @@ static int do_mount_autofs_indirect(stru
if (ret == 0)
return -1;
} else {
- mnts = get_mnt_list(_PROC_MOUNTS, ap->path, 1);
+ mnts = get_mnt_list(ap->path, 1);
if (mnts) {
ret = unlink_mount_tree(ap, mnts);
free_mnt_list(mnts);
@@ -433,7 +433,7 @@ void *expire_proc_indirect(void *arg)
left = 0;
/* Get a list of real mounts and expire them if possible */
- mnts = get_mnt_list(_PROC_MOUNTS, ap->path, 0);
+ mnts = get_mnt_list(ap->path, 0);
pthread_cleanup_push(mnts_cleanup, mnts);
for (next = mnts; next; next = next->next) {
char *ind_key;
@@ -454,7 +454,7 @@ void *expire_proc_indirect(void *arg)
struct stat st;
/* It's got a mount, deal with in the outer loop */
- if (is_mounted(_PATH_MOUNTED, next->mp, MNTS_REAL)) {
+ if (is_mounted(next->mp, MNTS_REAL)) {
pthread_setcancelstate(cur_state, NULL);
continue;
}
@@ -563,7 +563,7 @@ void *expire_proc_indirect(void *arg)
pthread_cleanup_pop(1);
count = offsets = submnts = 0;
- mnts = get_mnt_list(_PROC_MOUNTS, ap->path, 0);
+ mnts = get_mnt_list(ap->path, 0);
pthread_cleanup_push(mnts_cleanup, mnts);
/* Are there any real mounts left */
for (next = mnts; next; next = next->next) {
--- autofs-5.1.4.orig/daemon/lookup.c
+++ autofs-5.1.4/daemon/lookup.c
@@ -1425,7 +1425,7 @@ void lookup_prune_one_cache(struct autof
valid = NULL;
}
if (!valid &&
- is_mounted(_PATH_MOUNTED, path, MNTS_REAL)) {
+ is_mounted(path, MNTS_REAL)) {
debug(ap->logopt, "prune posponed, %s mounted", path);
free(key);
free(path);
@@ -1448,7 +1448,7 @@ void lookup_prune_one_cache(struct autof
if (valid)
cache_delete(mc, key);
- else if (!is_mounted(_PROC_MOUNTS, path, MNTS_AUTOFS)) {
+ else if (!is_mounted(path, MNTS_AUTOFS)) {
dev_t devid = ap->dev;
status = CHE_FAIL;
if (ap->type == LKP_DIRECT)
--- autofs-5.1.4.orig/daemon/spawn.c
+++ autofs-5.1.4/daemon/spawn.c
@@ -427,7 +427,7 @@ static int do_spawn(unsigned logopt, uns
if (!is_bind)
goto done;
- if (is_mounted(_PROC_MOUNTS, argv[loc], MNTS_AUTOFS)) {
+ if (is_mounted(argv[loc], MNTS_AUTOFS)) {
fprintf(stderr,
"error: can't bind to an autofs mount\n");
close(STDOUT_FILENO);
--- autofs-5.1.4.orig/daemon/state.c
+++ autofs-5.1.4/daemon/state.c
@@ -499,7 +499,7 @@ static void *do_readmap(void *arg)
struct mapent *me;
unsigned int append_alarm = !ap->exp_runfreq;
- mnts = tree_make_mnt_tree(_PROC_MOUNTS, "/");
+ mnts = tree_make_mnt_tree("/");
pthread_cleanup_push(tree_mnts_cleanup, mnts);
nc = ap->entry->master->nc;
cache_readlock(nc);
--- autofs-5.1.4.orig/include/mounts.h
+++ autofs-5.1.4/include/mounts.h
@@ -99,11 +99,11 @@ char *make_mnt_name_string(char *path);
int ext_mount_add(struct list_head *, const char *, unsigned int);
int ext_mount_remove(struct list_head *, const char *);
int ext_mount_inuse(const char *);
-struct mnt_list *get_mnt_list(const char *table, const char *path, int include);
+struct mnt_list *get_mnt_list(const char *path, int include);
void free_mnt_list(struct mnt_list *list);
-int is_mounted(const char *table, const char *mp, unsigned int type);
+int is_mounted(const char *mp, unsigned int type);
void tree_free_mnt_tree(struct mnt_list *tree);
-struct mnt_list *tree_make_mnt_tree(const char *table, const char *path);
+struct mnt_list *tree_make_mnt_tree(const char *path);
int tree_get_mnt_list(struct mnt_list *mnts, struct list_head *list, const char *path, int include);
int tree_get_mnt_sublist(struct mnt_list *mnts, struct list_head *list, const char *path, int include);
int tree_find_mnt_ents(struct mnt_list *mnts, struct list_head *list, const char *path);
--- autofs-5.1.4.orig/lib/mounts.c
+++ autofs-5.1.4/lib/mounts.c
@@ -789,7 +789,7 @@ done:
/*
* Get list of mounts under path in longest->shortest order
*/
-struct mnt_list *get_mnt_list(const char *table, const char *path, int include)
+struct mnt_list *get_mnt_list(const char *path, int include)
{
FILE *tab;
size_t pathlen = strlen(path);
@@ -803,7 +803,7 @@ struct mnt_list *get_mnt_list(const char
if (!path || !pathlen || pathlen > PATH_MAX)
return NULL;
- tab = open_setmntent_r(table);
+ tab = open_setmntent_r(_PROC_MOUNTS);
if (!tab) {
char *estr = strerror_r(errno, buf, PATH_MAX - 1);
logerr("setmntent: %s", estr);
@@ -892,7 +892,7 @@ void free_mnt_list(struct mnt_list *list
}
}
-static int table_is_mounted(const char *table, const char *mp, unsigned int type)
+static int table_is_mounted(const char *mp, unsigned int type)
{
struct mntent *mnt;
struct mntent mnt_wrk;
@@ -904,7 +904,7 @@ static int table_is_mounted(const char *
if (!mp || !mp_len || mp_len >= PATH_MAX)
return 0;
- tab = open_setmntent_r(table);
+ tab = open_setmntent_r(_PROC_MOUNTS);
if (!tab) {
char *estr = strerror_r(errno, buf, PATH_MAX - 1);
logerr("setmntent: %s", estr);
@@ -938,7 +938,7 @@ static int table_is_mounted(const char *
return ret;
}
-static int ioctl_is_mounted(const char *table, const char *mp, unsigned int type)
+static int ioctl_is_mounted(const char *mp, unsigned int type)
{
struct ioctl_ops *ops = get_ioctl_ops();
unsigned int mounted;
@@ -949,7 +949,7 @@ static int ioctl_is_mounted(const char *
*/
ret = ops->ismountpoint(LOGOPT_NONE, -1, mp, &mounted);
if (ret == -1)
- return table_is_mounted(table, mp, type);
+ return table_is_mounted(mp, type);
if (mounted) {
switch (type) {
@@ -964,14 +964,14 @@ static int ioctl_is_mounted(const char *
return 0;
}
-int is_mounted(const char *table, const char *mp, unsigned int type)
+int is_mounted(const char *mp, unsigned int type)
{
struct ioctl_ops *ops = get_ioctl_ops();
if (ops->ismountpoint)
- return ioctl_is_mounted(table, mp, type);
+ return ioctl_is_mounted(mp, type);
else
- return table_is_mounted(table, mp, type);
+ return table_is_mounted(mp, type);
}
/*
@@ -1018,7 +1018,7 @@ void tree_free_mnt_tree(struct mnt_list
/*
* Make tree of system mounts in /proc/mounts.
*/
-struct mnt_list *tree_make_mnt_tree(const char *table, const char *path)
+struct mnt_list *tree_make_mnt_tree(const char *path)
{
FILE *tab;
struct mntent mnt_wrk;
@@ -1029,7 +1029,7 @@ struct mnt_list *tree_make_mnt_tree(cons
size_t plen;
int eq;
- tab = open_setmntent_r(table);
+ tab = open_setmntent_r(_PROC_MOUNTS);
if (!tab) {
char *estr = strerror_r(errno, buf, PATH_MAX - 1);
logerr("setmntent: %s", estr);
@@ -1281,7 +1281,7 @@ int tree_is_mounted(struct mnt_list *mnt
int mounted = 0;
if (ops->ismountpoint)
- return ioctl_is_mounted(_PROC_MOUNTS, path, type);
+ return ioctl_is_mounted(path, type);
INIT_LIST_HEAD(&list);
@@ -1856,7 +1856,7 @@ void set_indirect_mount_tree_catatonic(s
struct mapent_cache *mc;
struct mapent *me;
- if (!is_mounted(_PROC_MOUNTS, ap->path, MNTS_AUTOFS))
+ if (!is_mounted(ap->path, MNTS_AUTOFS))
return;
map = entry->maps;
@@ -1920,7 +1920,7 @@ int umount_ent(struct autofs_point *ap,
* so that we do not try to call rmdir_path on the
* directory.
*/
- if (!rv && is_mounted(_PATH_MOUNTED, path, MNTS_REAL)) {
+ if (!rv && is_mounted(path, MNTS_REAL)) {
crit(ap->logopt,
"the umount binary reported that %s was "
"unmounted, but there is still something "
@@ -2053,7 +2053,7 @@ int mount_multi_triggers(struct autofs_p
*/
if (ap->state == ST_READMAP && ap->flags & MOUNT_FLAG_REMOUNT) {
if (oe->ioctlfd != -1 ||
- is_mounted(_PROC_MOUNTS, oe->key, MNTS_REAL)) {
+ is_mounted(oe->key, MNTS_REAL)) {
char oe_root[PATH_MAX + 1];
strcpy(oe_root, root);
strcat(oe_root, offset);
@@ -2142,7 +2142,7 @@ int umount_multi_triggers(struct autofs_
left += umount_multi_triggers(ap, oe, root, oe_base);
if (oe->ioctlfd != -1 ||
- is_mounted(_PROC_MOUNTS, oe->key, MNTS_REAL)) {
+ is_mounted(oe->key, MNTS_REAL)) {
left++;
continue;
}
@@ -2185,10 +2185,10 @@ int umount_multi_triggers(struct autofs_
* delete the offsets from the cache and we need to put
* the offset triggers back.
*/
- if (is_mounted(_PATH_MOUNTED, root, MNTS_REAL)) {
+ if (is_mounted(root, MNTS_REAL)) {
info(ap->logopt, "unmounting dir = %s", root);
if (umount_ent(ap, root) &&
- is_mounted(_PATH_MOUNTED, root, MNTS_REAL)) {
+ is_mounted(root, MNTS_REAL)) {
if (mount_multi_triggers(ap, me, root, strlen(root), "/") < 0)
warn(ap->logopt,
"failed to remount offset triggers");
@@ -2288,9 +2288,9 @@ int clean_stale_multi_triggers(struct au
* ESTALE errors when attempting list the directory.
*/
if (oe->ioctlfd != -1 ||
- is_mounted(_PROC_MOUNTS, oe->key, MNTS_REAL)) {
+ is_mounted(oe->key, MNTS_REAL)) {
if (umount_ent(ap, oe->key) &&
- is_mounted(_PROC_MOUNTS, oe->key, MNTS_REAL)) {
+ is_mounted(oe->key, MNTS_REAL)) {
debug(ap->logopt,
"offset %s has active mount, invalidate",
oe->key);
--- autofs-5.1.4.orig/modules/parse_amd.c
+++ autofs-5.1.4/modules/parse_amd.c
@@ -1173,7 +1173,7 @@ static int do_generic_mount(struct autof
* multiple times since they are outside of
* the automount filesystem.
*/
- if (!is_mounted(_PATH_MOUNTED, entry->fs, MNTS_REAL)) {
+ if (!is_mounted(entry->fs, MNTS_REAL)) {
ret = do_mount(ap, entry->fs, "/", 1,
target, entry->type, opts);
if (ret)
@@ -1223,7 +1223,7 @@ static int do_nfs_mount(struct autofs_po
target, entry->type, opts,
mount_nfs->context);
} else {
- if (!is_mounted(_PATH_MOUNTED, entry->fs, MNTS_REAL)) {
+ if (!is_mounted(entry->fs, MNTS_REAL)) {
ret = mount_nfs->mount_mount(ap, entry->fs, "/", 1,
target, entry->type, opts,
mount_nfs->context);
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