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userns: Allow unprivilged mounts of proc and sysfs

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- The context in which proc and sysfs are mounted have no
  effect on the the uid/gid of their files so no conversion is
  needed except allowing the mount.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-07-27 05:56:48 -07:00
parent c450f371d4
commit 4f326c0064
2 changed files with 2 additions and 0 deletions
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1
fs/proc/root.c
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@ -145,6 +145,7 @@ static struct file_system_type proc_fs_type = {
.name = "proc", .name = "proc",
.mount = proc_mount, .mount = proc_mount,
.kill_sb = proc_kill_sb, .kill_sb = proc_kill_sb,
.fs_flags = FS_USERNS_MOUNT,
}; };
void __init proc_root_init(void) void __init proc_root_init(void)

1
fs/sysfs/mount.c
View File

@ -149,6 +149,7 @@ static struct file_system_type sysfs_fs_type = {
.name = "sysfs", .name = "sysfs",
.mount = sysfs_mount, .mount = sysfs_mount,
.kill_sb = sysfs_kill_sb, .kill_sb = sysfs_kill_sb,
.fs_flags = FS_USERNS_MOUNT,
}; };
int __init sysfs_init(void) int __init sysfs_init(void)