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autofs-5.1.6 - fix unlink mounts umount order
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From: Ian Kent <raven@themaw.net>
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The recent changes to mount table handling to support the "ignore"
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autofs pseudo option resulted in the incorrect umount order being used
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in the unlink_mount_tree() function.
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To fix this change unlink_mount_tree() to use the existing get_mnt_list()
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function to construct a correctly ordered list for the umounts.
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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 | 39 +++++++++------------------------------
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2 files changed, 10 insertions(+), 30 deletions(-)
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--- autofs-5.1.4.orig/CHANGELOG
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+++ autofs-5.1.4/CHANGELOG
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@@ -84,6 +84,7 @@ xx/xx/2018 autofs-5.1.5
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- mount_nfs.c fix local rdma share not mounting.
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- fix incorrect systemctl command syntax in autofs(8).
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- fix direct mount unlink_mount_tree() path.
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+- fix unlink mounts umount order.
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19/12/2017 autofs-5.1.4
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- fix spec file url.
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--- autofs-5.1.4.orig/lib/mounts.c
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+++ autofs-5.1.4/lib/mounts.c
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@@ -951,42 +951,21 @@ local_getmntent_r(FILE *tab, struct mnte
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int unlink_mount_tree(struct autofs_point *ap, const char *mp)
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{
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- FILE *tab;
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- struct mntent *mnt;
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- struct mntent mnt_wrk;
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- char buf[PATH_MAX * 3];
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- unsigned int mp_len = strlen(mp);
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+ struct mnt_list *mnts, *mnt;
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int rv, ret = 1;
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- tab = open_fopen_r(_PROC_MOUNTS);
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- if (!tab) {
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- char *estr = strerror_r(errno, buf, PATH_MAX - 1);
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- logerr("fopen: %s", estr);
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+ mnts = get_mnt_list(mp, 1);
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+ if (!mnts)
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return 0;
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- }
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-
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- while ((mnt = local_getmntent_r(tab, &mnt_wrk, buf, PATH_MAX * 3))) {
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- unsigned int mnt_dir_len;
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- int is_autofs;
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-
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- if (strncmp(mnt->mnt_dir, mp, mp_len))
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- continue;
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-
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- mnt_dir_len = strlen(mnt->mnt_dir);
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- is_autofs = !strcmp(mnt->mnt_type, "autofs");
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-
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- if (mnt_dir_len == mp_len && !is_autofs) {
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- ret = 0;
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- break;
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- }
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- if (is_autofs)
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- rv = umount2(mnt->mnt_dir, MNT_DETACH);
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+ for (mnt = mnts; mnt; mnt = mnt->next) {
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+ if (mnt->flags | MNTS_AUTOFS)
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+ rv = umount2(mnt->mp, MNT_DETACH);
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else
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- rv = spawn_umount(ap->logopt, "-l", mnt->mnt_dir, NULL);
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+ rv = spawn_umount(ap->logopt, "-l", mnt->mp, NULL);
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if (rv == -1) {
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debug(ap->logopt,
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- "can't unlink %s from mount tree", mnt->mnt_dir);
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+ "can't unlink %s from mount tree", mnt->mp);
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switch (errno) {
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case EINVAL:
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@@ -1002,7 +981,7 @@ int unlink_mount_tree(struct autofs_poin
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}
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}
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}
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- fclose(tab);
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+ free_mnt_list(mnts);
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return ret;
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}
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