diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2009-08-20 20:24:33 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2009-08-20 20:24:33 +0200 |
| commit | 39cf0518d89d1f0af79554457c52adb5b12fa43c (patch) | |
| tree | 3d04a6efe1e2afb6db7091af4b7033a56ae1b077 /mm/nommu.c | |
| parent | af15c1addf920d830b030e3489a482456904ca8c (diff) | |
| parent | 6c30c53fd5ae6a99a23ad78e90c428d2c8ffb07f (diff) | |
Merge branch 'master' into for-linus
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) && |