diff options
| author | Yurii Zubrytskyi <zyy@google.com> | 2021-02-18 09:22:52 -0800 |
|---|---|---|
| committer | Paul Lawrence <paullawrence@google.com> | 2021-02-22 18:50:56 +0000 |
| commit | 5bf1af0c987ac1394ccd817e5e794fc916703cd0 (patch) | |
| tree | e1fd66ec5c4adeee5f31c7183a808716e6face10 | |
| parent | a7961b063571ea2f574d798e3547e10748d4aa84 (diff) | |
ANDROID: Incremental fs: set the correct access to mapped files
Backing file needs to have write permissions for all users
even though the mounted view doesn't - otherwise incfs can't
change the internal file data.
Bug: 180535478
Test: adb install <apk>
Signed-off-by: Yurii Zubrytskyi <zyy@google.com>
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Change-Id: I5d7915b28072cff1508ba45b56e844cb678ca466
| -rw-r--r-- | fs/incfs/pseudo_files.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/incfs/pseudo_files.c b/fs/incfs/pseudo_files.c index e6fdc9d18111..351523ddfa8e 100644 --- a/fs/incfs/pseudo_files.c +++ b/fs/incfs/pseudo_files.c @@ -864,6 +864,12 @@ static long ioctl_create_mapped_file(struct file *file, void __user *arg) if (error) goto out; + error = chmod(file_dentry, args.mode | 0222); + if (error) { + pr_debug("incfs: chmod err: %d\n", error); + goto delete_file; + } + /* Save the file's size as an xattr for easy fetching in future. */ size_attr_value = cpu_to_le64(args.size); error = vfs_setxattr(file_dentry, INCFS_XATTR_SIZE_NAME, |