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| author | Eric Van Hensbergen <ericvh@gmail.com> | 2008-06-24 17:39:39 -0500 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@opteron.9grid.us> | 2008-07-03 09:59:03 -0500 |
| commit | 2e4bef41a0f7df31be140ef354b9c12f2299016a (patch) | |
| tree | 6ddea6aa929a5f49a4e815a3bfe21f04177dc69e /fs/9p/vfs_file.c | |
| parent | c461a973118346d5c103aaaddd62e53939fd7c67 (diff) | |
| download | lwn-2e4bef41a0f7df31be140ef354b9c12f2299016a.tar.gz lwn-2e4bef41a0f7df31be140ef354b9c12f2299016a.zip | |
9p: fix O_APPEND in legacy mode
The legacy protocol's open operation doesn't handle an append operation
(it is expected that the client take care of it). We were incorrectly
passing the extended protocol's flag through even in legacy mode. This
was reported in bugzilla report #10689. This patch fixes the problem
by disallowing extended protocol open modes from being passed in legacy
mode and implemented append functionality on the client side by adding
a seek after the open.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs/9p/vfs_file.c')
| -rw-r--r-- | fs/9p/vfs_file.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 0d55affe37d4..52944d2249a4 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -59,7 +59,7 @@ int v9fs_file_open(struct inode *inode, struct file *file) P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p \n", inode, file); v9ses = v9fs_inode2v9ses(inode); - omode = v9fs_uflags2omode(file->f_flags); + omode = v9fs_uflags2omode(file->f_flags, v9fs_extended(v9ses)); fid = file->private_data; if (!fid) { fid = v9fs_fid_clone(file->f_path.dentry); @@ -75,6 +75,8 @@ int v9fs_file_open(struct inode *inode, struct file *file) inode->i_size = 0; inode->i_blocks = 0; } + if ((file->f_flags & O_APPEND) && (!v9fs_extended(v9ses))) + generic_file_llseek(file, 0, SEEK_END); } file->private_data = fid; |