autofs/SOURCES/autofs-5.1.8-set-mapent-dev-and-ino-before-adding-to-index.patch

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2023-09-21 18:04:33 +00:00
autofs-5.1.8 - set mapent dev and ino before adding to index
From: Ian Kent <raven@themaw.net>
Set the struct fields dev and ino straight after getting them with
stat() or fstat() so they can be used in cache_set_ino_index() without
being passed in.
Signed-off-by: Ian Kent <raven@themaw.net>
---
CHANGELOG | 1 +
daemon/direct.c | 8 ++++++--
daemon/state.c | 2 +-
include/automount.h | 3 +--
lib/cache.c | 11 ++---------
lib/mounts.c | 16 +++++++++++++---
6 files changed, 24 insertions(+), 17 deletions(-)
--- autofs-5.1.7.orig/CHANGELOG
+++ autofs-5.1.7/CHANGELOG
@@ -144,6 +144,7 @@
- remove redundant fstat from do_mount_direct().
- get rid of strlen call in handle_packet_missing_direct().
- remove redundant stat call in lookup_ghost().
+- set mapent dev and ino before adding to index.
25/01/2021 autofs-5.1.7
- make bind mounts propagation slave by default.
--- autofs-5.1.7.orig/daemon/direct.c
+++ autofs-5.1.7/daemon/direct.c
@@ -410,6 +410,8 @@ int do_mount_autofs_direct(struct autofs
"failed to stat direct mount trigger %s", me->key);
goto out_umount;
}
+ me->dev = st.st_dev;
+ me->ino = st.st_ino;
if (ap->mode && (err = chmod(me->key, ap->mode)))
warn(ap->logopt, "failed to change mode of %s", me->key);
@@ -422,7 +424,7 @@ int do_mount_autofs_direct(struct autofs
ops->timeout(ap->logopt, ioctlfd, timeout);
notify_mount_result(ap, me->key, timeout, str_direct);
- cache_set_ino_index(me->mc, me->key, st.st_dev, st.st_ino);
+ cache_set_ino_index(me->mc, me);
ops->close(ap->logopt, ioctlfd);
debug(ap->logopt, "mounted trigger %s", me->key);
@@ -765,6 +767,8 @@ int mount_autofs_offset(struct autofs_po
goto out_umount;
goto out_err;
}
+ me->dev = st.st_dev;
+ me->ino = st.st_ino;
ops->open(ap->logopt, &ioctlfd, st.st_dev, me->key);
if (ioctlfd < 0) {
@@ -773,7 +777,7 @@ int mount_autofs_offset(struct autofs_po
}
ops->timeout(ap->logopt, ioctlfd, timeout);
- cache_set_ino_index(me->mc, me->key, st.st_dev, st.st_ino);
+ cache_set_ino_index(me->mc, me);
notify_mount_result(ap, me->key, timeout, str_offset);
ops->close(ap->logopt, ioctlfd);
--- autofs-5.1.7.orig/daemon/state.c
+++ autofs-5.1.7/daemon/state.c
@@ -362,7 +362,7 @@ static int do_readmap_mount(struct autof
valid->ioctlfd = me->ioctlfd;
me->ioctlfd = -1;
/* Set device and inode number of the new mapent */
- cache_set_ino_index(vmc, me->key, me->dev, me->ino);
+ cache_set_ino_index(vmc, me);
cache_unlock(vmc);
/* Set timeout and calculate the expire run frequency */
timeout = get_exp_timeout(ap, map);
--- autofs-5.1.7.orig/include/automount.h
+++ autofs-5.1.7/include/automount.h
@@ -199,8 +199,7 @@ int cache_push_mapent(struct mapent *me,
int cache_pop_mapent(struct mapent *me);
struct mapent_cache *cache_init(struct autofs_point *ap, struct map_source *map);
struct mapent_cache *cache_init_null_cache(struct master *master);
-int cache_set_ino_index(struct mapent_cache *mc, const char *key, dev_t dev, ino_t ino);
-/* void cache_set_ino(struct mapent *me, dev_t dev, ino_t ino); */
+int cache_set_ino_index(struct mapent_cache *mc, struct mapent *me);
struct mapent *cache_lookup_ino(struct mapent_cache *mc, dev_t dev, ino_t ino);
struct mapent *cache_lookup_first(struct mapent_cache *mc);
struct mapent *cache_lookup_next(struct mapent_cache *mc, struct mapent *me);
--- autofs-5.1.7.orig/lib/cache.c
+++ autofs-5.1.7/lib/cache.c
@@ -290,20 +290,13 @@ static u_int32_t ino_hash(dev_t dev, ino
return hashval % size;
}
-int cache_set_ino_index(struct mapent_cache *mc, const char *key, dev_t dev, ino_t ino)
+int cache_set_ino_index(struct mapent_cache *mc, struct mapent *me)
{
- u_int32_t ino_index = ino_hash(dev, ino, mc->size);
- struct mapent *me;
-
- me = cache_lookup_distinct(mc, key);
- if (!me)
- return 0;
+ u_int32_t ino_index = ino_hash(me->dev, me->ino, mc->size);
ino_index_lock(mc);
list_del_init(&me->ino_index);
list_add(&me->ino_index, &mc->ino_index[ino_index]);
- me->dev = dev;
- me->ino = ino;
ino_index_unlock(mc);
return 1;
--- autofs-5.1.7.orig/lib/mounts.c
+++ autofs-5.1.7/lib/mounts.c
@@ -2761,10 +2761,20 @@ static int remount_active_mount(struct a
ops->close(ap->logopt, fd);
return REMOUNT_STAT_FAIL;
}
- if (type != t_indirect)
- cache_set_ino_index(me->mc, path, st.st_dev, st.st_ino);
- else
+ if (type == t_indirect)
ap->dev = st.st_dev;
+ else {
+ if (strcmp(path, me->key)) {
+ error(ap->logopt,
+ "mount point path mismatch, path %s mapent %s", path, me->key);
+ debug(ap->logopt, "couldn't re-connect to mount %s", path);
+ ops->close(ap->logopt, fd);
+ return REMOUNT_STAT_FAIL;
+ }
+ me->dev = st.st_dev;
+ me->ino = st.st_ino;
+ cache_set_ino_index(me->mc, me);
+ }
notify_mount_result(ap, path, timeout, str_type);
*ioctlfd = fd;