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autofs-5.1.7 - fix lookup_prune_one_cache() refactoring change
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From: Ian Kent <raven@themaw.net>
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Commit 256963d6b (autofs-5.1.7 - refactor lookup_prune_one_cache() a bit)
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changed the position of the getting the next enumeration map entry but
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failed to update a couple of other locations that assume the next map
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entry has been set. Under certain fairly common conditions this leads
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to an infinite loop.
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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/lookup.c | 5 ++++-
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2 files changed, 5 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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@@ -74,6 +74,7 @@
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- eliminate redundant cache lookup in tree_mapent_add_node().
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- fix hosts map offset order.
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- fix direct mount deadlock.
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+- fix lookup_prune_one_cache() refactoring change.
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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/lookup.c
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+++ autofs-5.1.7/daemon/lookup.c
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@@ -1379,6 +1379,7 @@ void lookup_prune_one_cache(struct autof
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if (!key || strchr(key, '*')) {
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if (key)
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free(key);
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+ me = cache_enumerate(mc, me);
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continue;
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}
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@@ -1386,6 +1387,7 @@ void lookup_prune_one_cache(struct autof
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if (!path) {
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warn(ap->logopt, "can't malloc storage for path");
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free(key);
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+ me = cache_enumerate(mc, me);
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continue;
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}
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@@ -1413,9 +1415,10 @@ void lookup_prune_one_cache(struct autof
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}
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if (!valid &&
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is_mounted(path, MNTS_REAL)) {
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- debug(ap->logopt, "prune posponed, %s mounted", path);
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+ debug(ap->logopt, "prune postponed, %s mounted", path);
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free(key);
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free(path);
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+ me = cache_enumerate(mc, me);
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continue;
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}
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if (valid)
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