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namespace: create /dev, /proc, /sys when needed

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We already create /dev implicitly if PrivateTmp=yes is on, if it is
missing. Do so too for the other two API VFS, as well as for /dev if
PrivateTmp=yes is off but MountAPIVFS=yes is on (i.e. when /dev is bind
mounted from the host).
This commit is contained in:
Lennart Poettering 2017-09-28 18:28:23 +02:00
parent 72fd17682d
commit 645767d6b5
1 changed files with 6 additions and 0 deletions
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6
src/core/namespace.c
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@ -618,6 +618,8 @@ static int mount_bind_dev(MountEntry *m) {
/* Implements the little brother of mount_private_dev(): simply bind mounts the host's /dev into the service's
* /dev. This is only used when RootDirectory= is set. */
(void) mkdir_p_label(mount_entry_path(m), 0755);
r = path_is_mount_point(mount_entry_path(m), NULL, 0);
if (r < 0)
return log_debug_errno(r, "Unable to determine whether /dev is already mounted: %m");
@ -635,6 +637,8 @@ static int mount_sysfs(MountEntry *m) {
assert(m);
(void) mkdir_p_label(mount_entry_path(m), 0755);
r = path_is_mount_point(mount_entry_path(m), NULL, 0);
if (r < 0)
return log_debug_errno(r, "Unable to determine whether /sys is already mounted: %m");
@ -653,6 +657,8 @@ static int mount_procfs(MountEntry *m) {
assert(m);
(void) mkdir_p_label(mount_entry_path(m), 0755);
r = path_is_mount_point(mount_entry_path(m), NULL, 0);
if (r < 0)
return log_debug_errno(r, "Unable to determine whether /proc is already mounted: %m");