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autofs-5.1.7 - fix nonstrict offset mount fail handling
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From: Ian Kent <raven@themaw.net>
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If a triggered offset mount fails automount is not handling nonstrict
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mount failure correctly.
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The nonstrict mount failure handling needs to convert an offset mount
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failure to a success if the offset subtree below the failed mount is not
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empty otherwise it must return the failure. The previous implementation
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used -1 to indicate the subtree was empty and that was used to detect
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when the mount should fail instead of converting the fail to a success.
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Make the new implementation do the same.
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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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lib/mounts.c | 2 +-
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modules/parse_sun.c | 2 +-
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3 files changed, 3 insertions(+), 2 deletions(-)
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--- autofs-5.1.7.orig/CHANGELOG
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+++ autofs-5.1.7/CHANGELOG
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@@ -76,6 +76,7 @@
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- fix direct mount deadlock.
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- fix lookup_prune_one_cache() refactoring change.
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- add missing description of null map option.
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+- fix nonstrict offset mount fail 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/lib/mounts.c
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+++ autofs-5.1.7/lib/mounts.c
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@@ -1616,7 +1616,7 @@ static int tree_mapent_traverse_subtree(
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{
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struct traverse_subtree_context *ctxt = ptr;
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struct mapent *oe = MAPENT(n);
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- int ret = 1;
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+ int ret = -1;
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if (n->left) {
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ret = tree_mapent_traverse_subtree(n->left, work, ctxt);
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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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@@ -1181,7 +1181,7 @@ static int mount_subtree(struct autofs_p
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* offsets to be mounted.
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*/
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rv = sun_mount(ap, name, name, namelen, loc, loclen, options, ctxt);
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- if (rv == 0) {
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+ if (rv <= 0) {
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ret = tree_mapent_mount_offsets(me, 1);
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if (!ret) {
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tree_mapent_cleanup_offsets(me);
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