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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-13 02:54:37 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-13 02:54:37 +0300
commit5010fe9f095414b959fd6fda63986dc90fd0c419 (patch)
tree83de620958908e92c567af5fc773768c9f46ada2 /fs/orangefs
parent8487d8229990e6eacaf1c854a113c9d16b7b596c (diff)
parentdbc77f31e58b2902a5e7643761c04bf69f57a32a (diff)
downloadlinux-5010fe9f095414b959fd6fda63986dc90fd0c419.tar.xz
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.c37
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);
}