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| author | Lyon Wang <lyon.wang@mediatek.com> | 2023-10-30 19:22:31 +0800 |
|---|---|---|
| committer | Hao Han Wang <lyon.wang@mediatek.com> | 2023-11-02 07:56:14 +0000 |
| commit | 47e30b4060c43613523b256168f0e7f5bd7c4724 (patch) | |
| tree | 6d4c79ef570b238cf01fcbdb53836da678162624 | |
| parent | 2fea3eca9608d8c14fb6963bfe830dfa5985d7de (diff) | |
| download | common-47e30b4060c43613523b256168f0e7f5bd7c4724.tar.gz | |
ANDROID: fs/passthrough: Fix compatibility with R/O file system
Look at the passthrough file and check to see if its mount is read-only.
Bug: 297482438
Signed-off-by: Lyon Wang <lyon.wang@mediatek.com>
Change-Id: I0f483c6bcb1effe395eee07b6d721f343840d115
(cherry picked from commit dbeed231965e1a01bf0d70ea5439fbfacc7c4aae)
| -rw-r--r-- | fs/fuse/passthrough.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fuse/passthrough.c b/fs/fuse/passthrough.c index 6031e72f3b5a..1845e05db2da 100644 --- a/fs/fuse/passthrough.c +++ b/fs/fuse/passthrough.c @@ -213,7 +213,8 @@ int fuse_passthrough_open(struct fuse_dev *fud, u32 lower_fd) } if (!passthrough_filp->f_op->read_iter || - !passthrough_filp->f_op->write_iter) { + !((passthrough_filp->f_path.mnt->mnt_flags | MNT_READONLY) || + passthrough_filp->f_op->write_iter)) { pr_err("FUSE: passthrough file misses file operations.\n"); res = -EBADF; goto err_free_file; |