diff options
| author | Daniel Rosenberg <drosen@google.com> | 2016-04-22 00:00:48 -0700 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:59:57 +0200 |
| commit | 420f298f0f39260964c11bee74aa980d1b4d2175 (patch) | |
| tree | 041da6b7ecbb5f41f559e553725dcb6fb33404da /fs/fuse/dev.c | |
| parent | 5fda0de370a758957f649461b54f73b363496cd2 (diff) | |
fuse: Add support for d_canonical_path
Allows FUSE to report to inotify that it is acting
as a layered filesystem. The userspace component
returns a string representing the location of the
underlying file. If the string cannot be resolved
into a path, the top level path is returned instead.
bug: 23904372
Change-Id: Iabdca0bbedfbff59e9c820c58636a68ef9683d9f
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Diffstat (limited to 'fs/fuse/dev.c')
| -rw-r--r-- | fs/fuse/dev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 517bee28e..4581ee350 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -14,6 +14,7 @@ #include <linux/poll.h> #include <linux/uio.h> #include <linux/miscdevice.h> +#include <linux/namei.h> #include <linux/pagemap.h> #include <linux/file.h> #include <linux/slab.h> @@ -1947,6 +1948,10 @@ static ssize_t fuse_dev_do_write(struct fuse_conn *fc, spin_unlock(&fc->lock); err = copy_out_args(cs, &req->out, nbytes); + if (req->in.h.opcode == FUSE_CANONICAL_PATH) { + req->out.h.error = kern_path((char *)req->out.args[0].value, 0, + req->canonical_path); + } fuse_copy_finish(cs); spin_lock(&fc->lock); |