diff options
| author | James Morris <jmorris@namei.org> | 2009-08-20 09:18:42 +1000 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-08-20 09:18:42 +1000 |
| commit | ece13879e74313e62109e0755dd3d4f172df89e2 (patch) | |
| tree | 1fe96ab392c1ff203a6fb3f67ed0ed577056572e /mm/nommu.c | |
| parent | b08dc3eba0c34027010caeda258f495074ae3a54 (diff) | |
| parent | 6c30c53fd5ae6a99a23ad78e90c428d2c8ffb07f (diff) | |
Merge branch 'master' into next
Conflicts:
security/Kconfig
Manual fix.
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 28754c40be9..4bde489ec43 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -919,6 +919,10 @@ static int validate_mmap_request(struct file *file, if (!file->f_op->read) capabilities &= ~BDI_CAP_MAP_COPY; + /* The file shall have been opened with read permission. */ + if (!(file->f_mode & FMODE_READ)) + return -EACCES; + if (flags & MAP_SHARED) { /* do checks for writing, appending and locking */ if ((prot & PROT_WRITE) && |