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core/mount: Don't unmount initramfs mounts

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A mount within /run/initramfs is indicative that the mount was
created by initramfs init and will be unmounted by initramfs
shutdown.

It is unlikely that such a mount point would even be unmountable
by the the main system, for example in the case of the root file-
system being loop-mounted from a file in a /run/initramfs mount.
This commit is contained in:
Joel Holdsworth 2016-03-03 17:25:53 +00:00
parent 9f0cd100d0
commit 04a9393122
2 changed files with 10 additions and 6 deletions
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15
src/core/mount.c
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@ -369,7 +369,8 @@ static bool should_umount(Mount *m) {
MountParameters *p;
if (path_equal(m->where, "/") ||
path_equal(m->where, "/usr"))
path_equal(m->where, "/usr") ||
path_startswith(m->where, "/run/initramfs"))
return false;
p = get_mount_parameters(m);
@ -393,13 +394,15 @@ static int mount_add_default_dependencies(Mount *m) {
if (UNIT(m)->manager->running_as != MANAGER_SYSTEM)
return 0;
/* We do not add any default dependencies to / and /usr, since
* they are guaranteed to stay mounted the whole time, since
* our system is on it. Also, don't bother with anything
* mounted below virtual file systems, it's also going to be
* virtual, and hence not worth the effort. */
/* We do not add any default dependencies to /, /usr or
* /run/initramfs/, since they are guaranteed to stay
* mounted the whole time, since our system is on it.
* Also, don't bother with anything mounted below virtual
* file systems, it's also going to be virtual, and hence
* not worth the effort. */
if (path_equal(m->where, "/") ||
path_equal(m->where, "/usr") ||
path_startswith(m->where, "/run/initramfs") ||
path_startswith(m->where, "/proc") ||
path_startswith(m->where, "/sys") ||
path_startswith(m->where, "/dev"))

1
src/core/umount.c
View File

@ -412,6 +412,7 @@ static int mount_points_list_umount(MountPoint **head, bool *changed, bool log_e
#ifndef HAVE_SPLIT_USR
|| path_equal(m->path, "/usr")
#endif
|| path_startswith(m->path, "/run/initramfs")
)
continue;