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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-13 01:54:37 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-13 01:54:37 +0200 |
commit | 5010fe9f095414b959fd6fda63986dc90fd0c419 (patch) | |
tree | 83de620958908e92c567af5fc773768c9f46ada2 /fs/orangefs | |
parent | Merge tag 'linux-kselftest-5.3-rc1' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
parent | vfs: only allow FSSETXATTR to set DAX flag on files and dirs (diff) | |
download | linux-5010fe9f095414b959fd6fda63986dc90fd0c419.tar.xz linux-5010fe9f095414b959fd6fda63986dc90fd0c419.zip |
Merge tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull common SETFLAGS/FSSETXATTR parameter checking from Darrick Wong:
"Here's a patch series that sets up common parameter checking functions
for the FS_IOC_SETFLAGS and FS_IOC_FSSETXATTR ioctl implementations.
The goal here is to reduce the amount of behaviorial variance between
the filesystems where those ioctls originated (ext2 and XFS,
respectively) and everybody else.
- Standardize parameter checking for the SETFLAGS and FSSETXATTR
ioctls (which were the file attribute setters for ext4 and xfs and
have now been hoisted to the vfs)
- Only allow the DAX flag to be set on files and directories"
* tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
vfs: only allow FSSETXATTR to set DAX flag on files and dirs
vfs: teach vfs_ioc_fssetxattr_check to check extent size hints
vfs: teach vfs_ioc_fssetxattr_check to check project id info
vfs: create a generic checking function for FS_IOC_FSSETXATTR
vfs: create a generic checking and prep function for FS_IOC_SETFLAGS
Diffstat (limited to 'fs/orangefs')
-rw-r--r-- | fs/orangefs/file.c | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/fs/orangefs/file.c b/fs/orangefs/file.c index a35c17017210..679a3c8e4fb3 100644 --- a/fs/orangefs/file.c +++ b/fs/orangefs/file.c @@ -357,11 +357,28 @@ static ssize_t orangefs_file_write_iter(struct kiocb *iocb, return ret; } +static int orangefs_getflags(struct inode *inode, unsigned long *uval) +{ + __u64 val = 0; + int ret; + + ret = orangefs_inode_getxattr(inode, + "user.pvfs2.meta_hint", + &val, sizeof(val)); + if (ret < 0 && ret != -ENODATA) + return ret; + else if (ret == -ENODATA) + val = 0; + *uval = val; + return 0; +} + /* * Perform a miscellaneous operation on a file. */ static long orangefs_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { + struct inode *inode = file_inode(file); int ret = -ENOTTY; __u64 val = 0; unsigned long uval; @@ -375,20 +392,16 @@ static long orangefs_ioctl(struct file *file, unsigned int cmd, unsigned long ar * and append flags */ if (cmd == FS_IOC_GETFLAGS) { - val = 0; - ret = orangefs_inode_getxattr(file_inode(file), - "user.pvfs2.meta_hint", - &val, sizeof(val)); - if (ret < 0 && ret != -ENODATA) + ret = orangefs_getflags(inode, &uval); + if (ret) return ret; - else if (ret == -ENODATA) - val = 0; - uval = val; gossip_debug(GOSSIP_FILE_DEBUG, "orangefs_ioctl: FS_IOC_GETFLAGS: %llu\n", (unsigned long long)uval); return put_user(uval, (int __user *)arg); } else if (cmd == FS_IOC_SETFLAGS) { + unsigned long old_uval; + ret = 0; if (get_user(uval, (int __user *)arg)) return -EFAULT; @@ -404,11 +417,17 @@ static long orangefs_ioctl(struct file *file, unsigned int cmd, unsigned long ar gossip_err("orangefs_ioctl: the FS_IOC_SETFLAGS only supports setting one of FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NOATIME_FL\n"); return -EINVAL; } + ret = orangefs_getflags(inode, &old_uval); + if (ret) + return ret; + ret = vfs_ioc_setflags_prepare(inode, old_uval, uval); + if (ret) + return ret; val = uval; gossip_debug(GOSSIP_FILE_DEBUG, "orangefs_ioctl: FS_IOC_SETFLAGS: %llu\n", (unsigned long long)val); - ret = orangefs_inode_setxattr(file_inode(file), + ret = orangefs_inode_setxattr(inode, "user.pvfs2.meta_hint", &val, sizeof(val), 0); } |