xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

userns: Remove the now unnecessary FS_USERNS_DEV_MOUNT flag

Browse Source 
Now that SB_I_NODEV controls the nodev behavior devpts can just clear
this flag during mount.  Simplifying the code and making it easier
to audit how the code works.  While still preserving the invariant
that s_iflags is only modified during mount.

Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2016-06-09 15:44:48 -05:00
parent 67690f937c
commit cc50a07a24
3 changed files with 3 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/devpts/inode.c
View File

@@ -396,6 +396,7 @@ devpts_fill_super(struct super_block *s, void *data, int silent)
{
struct inode *inode;
s->s_iflags &= ~SB_I_NODEV;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
s->s_magic = DEVPTS_SUPER_MAGIC;
@@ -480,7 +481,7 @@ static struct file_system_type devpts_fs_type = {
.name = "devpts",
.mount = devpts_mount,
.kill_sb = devpts_kill_sb,
.fs_flags = FS_USERNS_MOUNT | FS_USERNS_DEV_MOUNT,
.fs_flags = FS_USERNS_MOUNT,
};
/*