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Date: Wed, 22 Feb 2017 23:52:30 -0800
From: "Darrick J. Wong" <darrick.wong@...cle.com>
To: linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-ext4@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>,
Al Viro <viro@...IV.linux.org.uk>
Subject: [PATCH] vfs: hoist {XFS,EXT4}_IOC_{GOING,SHUT}DOWN to the VFS
ext4 and XFS expose the same shutdown ioctl with the same parameters,
so let's hoist the whole mess into the vfs headers.
Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
fs/ext4/ext4.h | 10 ----------
fs/ext4/ioctl.c | 12 ++++++------
fs/xfs/libxfs/xfs_fs.h | 9 +--------
fs/xfs/xfs_fsops.c | 6 +++---
fs/xfs/xfs_ioctl.c | 2 +-
fs/xfs/xfs_ioctl32.c | 2 +-
include/uapi/linux/fs.h | 8 ++++++++
7 files changed, 20 insertions(+), 29 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index cee23b6..b1b4f5b 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -683,16 +683,6 @@ struct fsxattr {
#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
-#define EXT4_IOC_SHUTDOWN _IOR ('X', 125, __u32)
-
-/*
- * Flags for going down operation
- */
-#define EXT4_GOING_FLAGS_DEFAULT 0x0 /* going down */
-#define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
-#define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
-
-
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
/*
* ioctl commands in 32 bit emulation
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index a4273dd..2a6f8a6 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -454,7 +454,7 @@ int ext4_shutdown(struct super_block *sb, unsigned long arg)
if (get_user(flags, (__u32 __user *)arg))
return -EFAULT;
- if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH)
+ if (flags > FS_SHUTDOWN_FLAGS_NOLOGFLUSH)
return -EINVAL;
if (ext4_forced_shutdown(sbi))
@@ -463,19 +463,19 @@ int ext4_shutdown(struct super_block *sb, unsigned long arg)
ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags);
switch (flags) {
- case EXT4_GOING_FLAGS_DEFAULT:
+ case FS_SHUTDOWN_FLAGS_DEFAULT:
freeze_bdev(sb->s_bdev);
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
thaw_bdev(sb->s_bdev, sb);
break;
- case EXT4_GOING_FLAGS_LOGFLUSH:
+ case FS_SHUTDOWN_FLAGS_LOGFLUSH:
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
(void) ext4_force_commit(sb);
jbd2_journal_abort(sbi->s_journal, 0);
}
break;
- case EXT4_GOING_FLAGS_NOLOGFLUSH:
+ case FS_SHUTDOWN_FLAGS_NOLOGFLUSH:
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
msleep(100);
@@ -940,7 +940,7 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return 0;
}
- case EXT4_IOC_SHUTDOWN:
+ case FS_IOC_SHUTDOWN:
return ext4_shutdown(sb, arg);
default:
return -ENOTTY;
@@ -1008,7 +1008,7 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case EXT4_IOC_SET_ENCRYPTION_POLICY:
case EXT4_IOC_GET_ENCRYPTION_PWSALT:
case EXT4_IOC_GET_ENCRYPTION_POLICY:
- case EXT4_IOC_SHUTDOWN:
+ case FS_IOC_SHUTDOWN:
break;
default:
return -ENOIOCTLCMD;
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index b72dc82..d7773b3 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -454,13 +454,6 @@ typedef struct xfs_swapext
} xfs_swapext_t;
/*
- * Flags for going down operation
- */
-#define XFS_FSOP_GOING_FLAGS_DEFAULT 0x0 /* going down */
-#define XFS_FSOP_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
-#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
-
-/*
* ioctl limits
*/
#ifdef XATTR_LIST_MAX
@@ -533,7 +526,7 @@ typedef struct xfs_swapext
#define XFS_IOC_ATTRLIST_BY_HANDLE _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
#define XFS_IOC_ATTRMULTI_BY_HANDLE _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
#define XFS_IOC_FSGEOMETRY _IOR ('X', 124, struct xfs_fsop_geom)
-#define XFS_IOC_GOINGDOWN _IOR ('X', 125, __uint32_t)
+/* XFS_IOC_GOINGDOWN ---------- hoisted 125 */
/* XFS_IOC_GETFSUUID ---------- deprecated 140 */
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 6ccaae9..3a0507e 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -907,7 +907,7 @@ xfs_fs_goingdown(
__uint32_t inflags)
{
switch (inflags) {
- case XFS_FSOP_GOING_FLAGS_DEFAULT: {
+ case FS_SHUTDOWN_FLAGS_DEFAULT: {
struct super_block *sb = freeze_bdev(mp->m_super->s_bdev);
if (sb && !IS_ERR(sb)) {
@@ -917,10 +917,10 @@ xfs_fs_goingdown(
break;
}
- case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
+ case FS_SHUTDOWN_FLAGS_LOGFLUSH:
xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
break;
- case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH:
+ case FS_SHUTDOWN_FLAGS_NOLOGFLUSH:
xfs_force_shutdown(mp,
SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR);
break;
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index cf1363db..859bdfe 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1931,7 +1931,7 @@ xfs_file_ioctl(
return error;
}
- case XFS_IOC_GOINGDOWN: {
+ case FS_IOC_SHUTDOWN: {
__uint32_t in;
if (!capable(CAP_SYS_ADMIN))
diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c
index 7c49938..f2c1af6 100644
--- a/fs/xfs/xfs_ioctl32.c
+++ b/fs/xfs/xfs_ioctl32.c
@@ -551,7 +551,7 @@ xfs_file_compat_ioctl(
case XFS_IOC_SET_RESBLKS:
case XFS_IOC_GET_RESBLKS:
case XFS_IOC_FSGROWFSLOG:
- case XFS_IOC_GOINGDOWN:
+ case FS_IOC_SHUTDOWN:
case XFS_IOC_ERROR_INJECTION:
case XFS_IOC_ERROR_CLEARALL:
return xfs_file_ioctl(filp, cmd, p);
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 36da93f..1925c21 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -347,4 +347,12 @@ struct fscrypt_policy {
#define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC */
#define RWF_SYNC 0x00000004 /* per-IO O_SYNC */
+/*
+ * Flags for fs shutdown operation
+ */
+#define FS_SHUTDOWN_FLAGS_DEFAULT 0x0 /* going down */
+#define FS_SHUTDOWN_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
+#define FS_SHUTDOWN_FLAGS_NOLOGFLUSH 0x2 /* don't flush log or data */
+#define FS_IOC_SHUTDOWN _IOR ('X', 125, __u32)
+
#endif /* _UAPI_LINUX_FS_H */
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