86 lines
2.7 KiB
Diff
86 lines
2.7 KiB
Diff
From 46eed8e1649cb8446d4c051ad1f1821cf3adca1a Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Tue, 14 May 2024 11:58:20 +0200
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Subject: [PATCH] libmount: Fix atime remount for new API
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All atime settings are mutually exclusive, and the attr_set mask for
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the mount_setattr() syscall cannot contain multiple MOUNT_ATTR_ atime
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related options.
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Unfortunately, during a remount, the list of options is composed of
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both old and new options. In this case, libmount sets more atime
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options to the mask. The correct behavior is to use the last atime
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related option from the list.
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Fixes: https://github.com/util-linux/util-linux/issues/3032
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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libmount/src/optlist.c | 33 +++++++++++++++++++++------------
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1 file changed, 21 insertions(+), 12 deletions(-)
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diff --git a/libmount/src/optlist.c b/libmount/src/optlist.c
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index 476acfd65..e32489627 100644
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--- a/libmount/src/optlist.c
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+++ b/libmount/src/optlist.c
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@@ -837,6 +837,7 @@ int mnt_optlist_get_attrs(struct libmnt_optlist *ls, uint64_t *set, uint64_t *cl
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struct libmnt_iter itr;
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struct libmnt_opt *opt;
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uint64_t remount_reset = 0;
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+ uint64_t atime_set = 0;
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if (!ls || !ls->linux_map || !set || !clr)
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return -EINVAL;
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@@ -879,29 +880,37 @@ int mnt_optlist_get_attrs(struct libmnt_optlist *ls, uint64_t *set, uint64_t *cl
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remount_reset &= ~x;
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if (opt->ent->mask & MNT_INVERT) {
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- DBG(OPTLIST, ul_debugobj(ls, " clr: %s", opt->ent->name));
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- /*
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- * All atime settings are mutually exclusive so *clr must
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- * have MOUNT_ATTR__ATIME set.
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- *
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- * See the function fs/namespace.c:build_mount_kattr()
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- * in the linux kernel source.
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- */
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+ DBG(OPTLIST, ul_debugobj(ls, " clr: %s 0x%08" PRIx64,
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+ opt->ent->name, x));
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+
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if (x == MOUNT_ATTR_RELATIME || x == MOUNT_ATTR_NOATIME ||
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x == MOUNT_ATTR_STRICTATIME)
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*clr |= MOUNT_ATTR__ATIME;
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else
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*clr |= x;
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} else {
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- DBG(OPTLIST, ul_debugobj(ls, " set: %s", opt->ent->name));
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- *set |= x;
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-
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if (x == MOUNT_ATTR_RELATIME || x == MOUNT_ATTR_NOATIME ||
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- x == MOUNT_ATTR_STRICTATIME)
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+ x == MOUNT_ATTR_STRICTATIME) {
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+ /* All atime settings are mutually exclusive,
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+ * the last option wins and MOUNT_ATTR__ATIME
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+ * is required in clr mask.
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+ */
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+ DBG(OPTLIST, ul_debugobj(ls, " atime: %s 0x%08" PRIx64,
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+ opt->ent->name, x));
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*clr |= MOUNT_ATTR__ATIME;
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+ atime_set = x;
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+ } else {
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+ DBG(OPTLIST, ul_debugobj(ls, " set: %s 0x%08" PRIx64,
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+ opt->ent->name, x));
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+ *set |= x;
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+ }
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}
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}
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+ if (atime_set) {
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+ DBG(OPTLIST, ul_debugobj(ls, " set atime 0x%08" PRIx64, atime_set));
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+ *set |= atime_set;
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+ }
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if (remount_reset)
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*clr |= remount_reset;
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--
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2.33.0
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