Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=14b8869ff4f00f105ea76678997b4d49d27baae3
Commit: 14b8869ff4f00f105ea76678997b4d49d27baae3
Parent: d199d652c513a010145a5a0d4e64c96361b97bee
Author: Eric Van Hensbergen <[EMAIL PROTECTED]>
AuthorDate: Wed Feb 6 19:25:05 2008 -0600
Committer: Eric Van Hensbergen <[EMAIL PROTECTED]>
CommitDate: Wed Feb 6 19:25:05 2008 -0600
9p: fix mmap to be read-only
v9fs was allowing writable mmap which could lead to kernel BUG() cases.
This sets the mmap function to generic_file_readonly_mmap which (correctly)
returns an error to applications which open mmap for writing.
Signed-off-by: Eric Van Hensbergen <[EMAIL PROTECTED]>
---
fs/9p/vfs_file.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index ba4b1ca..a616fff 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -184,7 +184,7 @@ static const struct file_operations
v9fs_cached_file_operations = {
.open = v9fs_file_open,
.release = v9fs_dir_release,
.lock = v9fs_file_lock,
- .mmap = generic_file_mmap,
+ .mmap = generic_file_readonly_mmap,
};
const struct file_operations v9fs_file_operations = {
@@ -194,5 +194,5 @@ const struct file_operations v9fs_file_operations = {
.open = v9fs_file_open,
.release = v9fs_dir_release,
.lock = v9fs_file_lock,
- .mmap = generic_file_mmap,
+ .mmap = generic_file_readonly_mmap,
};
-
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