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autofs-5.1.8 - fix root offset error handling
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From: Ian Kent <raven@themaw.net>
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If mounting the root or offsets of a multi-mount root fails any mounts
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done so far need to be umounted and the multi-mount offset tree deleted
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so it can be created cleanly and possibly mounted the next time it's
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triggered.
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Also, if a subtree that is not the multi-mount root fails the expire
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alarm needs to be re-instated so other subtrees (at least the root)
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will continue to expire.
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Signed-off-by: Ian Kent <raven@themaw.net>
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---
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CHANGELOG | 1 +
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daemon/direct.c | 10 +++++++++-
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modules/parse_sun.c | 6 ++++++
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3 files changed, 16 insertions(+), 1 deletion(-)
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--- autofs-5.1.7.orig/CHANGELOG
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+++ autofs-5.1.7/CHANGELOG
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@@ -84,6 +84,7 @@
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- fix fedfs build flags.
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- fix set open file limit.
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- improve descriptor open error reporting.
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+- fix root offset error handling.
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25/01/2021 autofs-5.1.7
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- make bind mounts propagation slave by default.
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--- autofs-5.1.7.orig/daemon/direct.c
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+++ autofs-5.1.7/daemon/direct.c
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@@ -1163,6 +1163,7 @@ static void *do_mount_direct(void *arg)
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struct ioctl_ops *ops = get_ioctl_ops();
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struct pending_args *args, mt;
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struct autofs_point *ap;
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+ struct mapent *me;
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struct stat st;
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int status, state;
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@@ -1226,7 +1227,6 @@ static void *do_mount_direct(void *arg)
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pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &state);
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if (status) {
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struct mnt_list *sbmnt;
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- struct mapent *me;
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struct statfs fs;
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unsigned int close_fd = 0;
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unsigned int flags = MNTS_DIRECT|MNTS_MOUNTED;
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@@ -1267,6 +1267,14 @@ static void *do_mount_direct(void *arg)
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mt.ioctlfd, mt.wait_queue_token, -ENOENT);
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ops->close(ap->logopt, mt.ioctlfd);
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info(ap->logopt, "failed to mount %s", mt.name);
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+
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+ /* If this is a multi-mount subtree mount failure
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+ * ensure the tree continues to expire.
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+ */
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+ me = cache_lookup_distinct(mt.mc, mt.name);
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+ if (me && IS_MM(me) && !IS_MM_ROOT(me))
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+ conditional_alarm_add(ap, ap->exp_runfreq);
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+ cache_unlock(mt.mc);
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}
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pthread_setcancelstate(state, NULL);
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--- autofs-5.1.7.orig/modules/parse_sun.c
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+++ autofs-5.1.7/modules/parse_sun.c
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@@ -1142,6 +1142,9 @@ static int mount_subtree(struct autofs_p
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if (!len) {
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warn(ap->logopt, "path loo long");
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cache_unlock(mc);
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+ cache_writelock(mc);
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+ tree_mapent_delete_offsets(mc, name);
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+ cache_unlock(mc);
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return 1;
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}
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key[len] = '/';
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@@ -1186,6 +1189,9 @@ static int mount_subtree(struct autofs_p
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cache_unlock(mc);
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error(ap->logopt, MODPREFIX
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"failed to mount offset triggers");
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+ cache_writelock(mc);
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+ tree_mapent_delete_offsets(mc, name);
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+ cache_unlock(mc);
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return 1;
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}
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}
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