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ipc/mqueue: The mqueue filesystem should never contain executables

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Set SB_I_NOEXEC on mqueuefs to ensure small implementation mistakes
do not result in executable on mqueuefs by accident.

Acked-by: Seth Forshee <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>
This commit is contained in:
Eric W. Biederman 2016-05-20 15:42:21 -05:00
commit 3ee690143c
1 changed files with 1 additions and 0 deletions
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1
ipc/mqueue.c
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@ -307,6 +307,7 @@ static int mqueue_fill_super(struct super_block *sb, void *data, int silent)
struct inode *inode;
struct ipc_namespace *ns = sb->s_fs_info;
sb->s_iflags |= SB_I_NOEXEC;
sb->s_blocksize = PAGE_SIZE;
sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_magic = MQUEUE_MAGIC;