summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--fs/btrfs/ioctl.c30
-rw-r--r--fs/efivarfs/file.c26
-rw-r--r--fs/ext2/ioctl.c16
-rw-r--r--fs/ext4/ioctl.c51
-rw-r--r--fs/gfs2/file.c42
-rw-r--r--fs/hfsplus/ioctl.c21
-rw-r--r--fs/inode.c86
-rw-r--r--fs/jfs/ioctl.c22
-rw-r--r--fs/nilfs2/ioctl.c9
-rw-r--r--fs/ocfs2/ioctl.c13
-rw-r--r--fs/orangefs/file.c37
-rw-r--r--fs/reiserfs/ioctl.c10
-rw-r--r--fs/ubifs/ioctl.c13
-rw-r--r--fs/xfs/xfs_ioctl.c154
-rw-r--r--include/linux/fs.h12
15 files changed, 300 insertions, 242 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 56ae2f659b6d..cfeff1b8dce0 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -187,7 +187,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
struct btrfs_inode *binode = BTRFS_I(inode);
struct btrfs_root *root = binode->root;
struct btrfs_trans_handle *trans;
- unsigned int fsflags;
+ unsigned int fsflags, old_fsflags;
int ret;
const char *comp = NULL;
u32 binode_flags = binode->flags;
@@ -212,13 +212,10 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
inode_lock(inode);
fsflags = btrfs_mask_fsflags_for_type(inode, fsflags);
- if ((fsflags ^ btrfs_inode_flags_to_fsflags(binode->flags)) &
- (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- ret = -EPERM;
- goto out_unlock;
- }
- }
+ old_fsflags = btrfs_inode_flags_to_fsflags(binode->flags);
+ ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
+ if (ret)
+ goto out_unlock;
if (fsflags & FS_SYNC_FL)
binode_flags |= BTRFS_INODE_SYNC;
@@ -376,9 +373,7 @@ static int btrfs_ioctl_fsgetxattr(struct file *file, void __user *arg)
struct btrfs_inode *binode = BTRFS_I(file_inode(file));
struct fsxattr fa;
- memset(&fa, 0, sizeof(fa));
- fa.fsx_xflags = btrfs_inode_flags_to_xflags(binode->flags);
-
+ simple_fill_fsxattr(&fa, btrfs_inode_flags_to_xflags(binode->flags));
if (copy_to_user(arg, &fa, sizeof(fa)))
return -EFAULT;
@@ -391,7 +386,7 @@ static int btrfs_ioctl_fssetxattr(struct file *file, void __user *arg)
struct btrfs_inode *binode = BTRFS_I(inode);
struct btrfs_root *root = binode->root;
struct btrfs_trans_handle *trans;
- struct fsxattr fa;
+ struct fsxattr fa, old_fa;
unsigned old_flags;
unsigned old_i_flags;
int ret = 0;
@@ -402,7 +397,6 @@ static int btrfs_ioctl_fssetxattr(struct file *file, void __user *arg)
if (btrfs_root_readonly(root))
return -EROFS;
- memset(&fa, 0, sizeof(fa));
if (copy_from_user(&fa, arg, sizeof(fa)))
return -EFAULT;
@@ -422,13 +416,11 @@ static int btrfs_ioctl_fssetxattr(struct file *file, void __user *arg)
old_flags = binode->flags;
old_i_flags = inode->i_flags;
- /* We need the capabilities to change append-only or immutable inode */
- if (((old_flags & (BTRFS_INODE_APPEND | BTRFS_INODE_IMMUTABLE)) ||
- (fa.fsx_xflags & (FS_XFLAG_APPEND | FS_XFLAG_IMMUTABLE))) &&
- !capable(CAP_LINUX_IMMUTABLE)) {
- ret = -EPERM;
+ simple_fill_fsxattr(&old_fa,
+ btrfs_inode_flags_to_xflags(binode->flags));
+ ret = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
+ if (ret)
goto out_unlock;
- }
if (fa.fsx_xflags & FS_XFLAG_SYNC)
binode->flags |= BTRFS_INODE_SYNC;
diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c
index ee3bc0c96b9d..e9e27a271af0 100644
--- a/fs/efivarfs/file.c
+++ b/fs/efivarfs/file.c
@@ -107,16 +107,22 @@ out_free:
return size;
}
-static int
-efivarfs_ioc_getxflags(struct file *file, void __user *arg)
+static inline unsigned int efivarfs_getflags(struct inode *inode)
{
- struct inode *inode = file->f_mapping->host;
unsigned int i_flags;
unsigned int flags = 0;
i_flags = inode->i_flags;
if (i_flags & S_IMMUTABLE)
flags |= FS_IMMUTABLE_FL;
+ return flags;
+}
+
+static int
+efivarfs_ioc_getxflags(struct file *file, void __user *arg)
+{
+ struct inode *inode = file->f_mapping->host;
+ unsigned int flags = efivarfs_getflags(inode);
if (copy_to_user(arg, &flags, sizeof(flags)))
return -EFAULT;
@@ -129,6 +135,7 @@ efivarfs_ioc_setxflags(struct file *file, void __user *arg)
struct inode *inode = file->f_mapping->host;
unsigned int flags;
unsigned int i_flags = 0;
+ unsigned int oldflags = efivarfs_getflags(inode);
int error;
if (!inode_owner_or_capable(inode))
@@ -140,9 +147,6 @@ efivarfs_ioc_setxflags(struct file *file, void __user *arg)
if (flags & ~FS_IMMUTABLE_FL)
return -EOPNOTSUPP;
- if (!capable(CAP_LINUX_IMMUTABLE))
- return -EPERM;
-
if (flags & FS_IMMUTABLE_FL)
i_flags |= S_IMMUTABLE;
@@ -152,12 +156,16 @@ efivarfs_ioc_setxflags(struct file *file, void __user *arg)
return error;
inode_lock(inode);
+
+ error = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (error)
+ goto out;
+
inode_set_flags(inode, i_flags, S_IMMUTABLE);
+out:
inode_unlock(inode);
-
mnt_drop_write_file(file);
-
- return 0;
+ return error;
}
static long
diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c
index 0367c0039e68..1b853fb0b163 100644
--- a/fs/ext2/ioctl.c
+++ b/fs/ext2/ioctl.c
@@ -60,18 +60,10 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
oldflags = ei->i_flags;
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- *
- * This test looks nicer. Thanks to Pauline Middelink
- */
- if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- inode_unlock(inode);
- ret = -EPERM;
- goto setflags_out;
- }
+ ret = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (ret) {
+ inode_unlock(inode);
+ goto setflags_out;
}
flags = flags & EXT2_FL_USER_MODIFIABLE;
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 74648d42c69b..442f7ef873fc 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -312,16 +312,9 @@ static int ext4_ioctl_setflags(struct inode *inode,
/* The JOURNAL_DATA flag is modifiable only by root */
jflag = flags & EXT4_JOURNAL_DATA_FL;
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- *
- * This test looks nicer. Thanks to Pauline Middelink
- */
- if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE))
- goto flags_out;
- }
+ err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (err)
+ goto flags_out;
/*
* The JOURNAL_DATA flag can only be changed by
@@ -741,28 +734,15 @@ group_add_out:
return err;
}
-static int ext4_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
+static void ext4_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
{
- /*
- * Project Quota ID state is only allowed to change from within the init
- * namespace. Enforce that restriction only if we are trying to change
- * the quota ID state. Everything else is allowed in user namespaces.
- */
- if (current_user_ns() == &init_user_ns)
- return 0;
-
- if (__kprojid_val(EXT4_I(inode)->i_projid) != fa->fsx_projid)
- return -EINVAL;
+ struct ext4_inode_info *ei = EXT4_I(inode);
- if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT)) {
- if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT))
- return -EINVAL;
- } else {
- if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
- return -EINVAL;
- }
+ simple_fill_fsxattr(fa, ext4_iflags_to_xflags(ei->i_flags &
+ EXT4_FL_USER_VISIBLE));
- return 0;
+ if (ext4_has_feature_project(inode->i_sb))
+ fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid);
}
long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
@@ -1139,13 +1119,7 @@ resizefs_out:
{
struct fsxattr fa;
- memset(&fa, 0, sizeof(struct fsxattr));
- fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
-
- if (ext4_has_feature_project(inode->i_sb)) {
- fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
- EXT4_I(inode)->i_projid);
- }
+ ext4_fill_fsxattr(inode, &fa);
if (copy_to_user((struct fsxattr __user *)arg,
&fa, sizeof(fa)))
@@ -1154,7 +1128,7 @@ resizefs_out:
}
case EXT4_IOC_FSSETXATTR:
{
- struct fsxattr fa;
+ struct fsxattr fa, old_fa;
int err;
if (copy_from_user(&fa, (struct fsxattr __user *)arg,
@@ -1177,7 +1151,8 @@ resizefs_out:
return err;
inode_lock(inode);
- err = ext4_ioctl_check_project(inode, &fa);
+ ext4_fill_fsxattr(inode, &old_fa);
+ err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
if (err)
goto out;
flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 8b0c2bfa90c1..52fa1ef8400b 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -136,27 +136,36 @@ static struct {
{FS_JOURNAL_DATA_FL, GFS2_DIF_JDATA | GFS2_DIF_INHERIT_JDATA},
};
+static inline u32 gfs2_gfsflags_to_fsflags(struct inode *inode, u32 gfsflags)
+{
+ int i;
+ u32 fsflags = 0;
+
+ if (S_ISDIR(inode->i_mode))
+ gfsflags &= ~GFS2_DIF_JDATA;
+ else
+ gfsflags &= ~GFS2_DIF_INHERIT_JDATA;
+
+ for (i = 0; i < ARRAY_SIZE(fsflag_gfs2flag); i++)
+ if (gfsflags & fsflag_gfs2flag[i].gfsflag)
+ fsflags |= fsflag_gfs2flag[i].fsflag;
+ return fsflags;
+}
+
static int gfs2_get_flags(struct file *filp, u32 __user *ptr)
{
struct inode *inode = file_inode(filp);
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_holder gh;
- int i, error;
- u32 gfsflags, fsflags = 0;
+ int error;
+ u32 fsflags;
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
error = gfs2_glock_nq(&gh);
if (error)
goto out_uninit;
- gfsflags = ip->i_diskflags;
- if (S_ISDIR(inode->i_mode))
- gfsflags &= ~GFS2_DIF_JDATA;
- else
- gfsflags &= ~GFS2_DIF_INHERIT_JDATA;
- for (i = 0; i < ARRAY_SIZE(fsflag_gfs2flag); i++)
- if (gfsflags & fsflag_gfs2flag[i].gfsflag)
- fsflags |= fsflag_gfs2flag[i].fsflag;
+ fsflags = gfs2_gfsflags_to_fsflags(inode, ip->i_diskflags);
if (put_user(fsflags, ptr))
error = -EFAULT;
@@ -200,9 +209,11 @@ void gfs2_set_inode_flags(struct inode *inode)
* @filp: file pointer
* @reqflags: The flags to set
* @mask: Indicates which flags are valid
+ * @fsflags: The FS_* inode flags passed in
*
*/
-static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
+static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask,
+ const u32 fsflags)
{
struct inode *inode = file_inode(filp);
struct gfs2_inode *ip = GFS2_I(inode);
@@ -210,7 +221,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
struct buffer_head *bh;
struct gfs2_holder gh;
int error;
- u32 new_flags, flags;
+ u32 new_flags, flags, oldflags;
error = mnt_want_write_file(filp);
if (error)
@@ -220,6 +231,11 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask)
if (error)
goto out_drop_write;
+ oldflags = gfs2_gfsflags_to_fsflags(inode, ip->i_diskflags);
+ error = vfs_ioc_setflags_prepare(inode, oldflags, fsflags);
+ if (error)
+ goto out;
+
error = -EACCES;
if (!inode_owner_or_capable(inode))
goto out;
@@ -308,7 +324,7 @@ static int gfs2_set_flags(struct file *filp, u32 __user *ptr)
mask &= ~(GFS2_DIF_TOPDIR | GFS2_DIF_INHERIT_JDATA);
}
- return do_gfs2_set_flags(filp, gfsflags, mask);
+ return do_gfs2_set_flags(filp, gfsflags, mask, fsflags);
}
static int gfs2_getlabel(struct file *filp, char __user *label)
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index 5e6502ef7415..ce15b9496b77 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -57,9 +57,8 @@ static int hfsplus_ioctl_bless(struct file *file, int __user *user_flags)
return 0;
}
-static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
+static inline unsigned int hfsplus_getflags(struct inode *inode)
{
- struct inode *inode = file_inode(file);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags = 0;
@@ -69,6 +68,13 @@ static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
flags |= FS_APPEND_FL;
if (hip->userflags & HFSPLUS_FLG_NODUMP)
flags |= FS_NODUMP_FL;
+ return flags;
+}
+
+static int hfsplus_ioctl_getflags(struct file *file, int __user *user_flags)
+{
+ struct inode *inode = file_inode(file);
+ unsigned int flags = hfsplus_getflags(inode);
return put_user(flags, user_flags);
}
@@ -78,6 +84,7 @@ static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
struct inode *inode = file_inode(file);
struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
unsigned int flags, new_fl = 0;
+ unsigned int oldflags = hfsplus_getflags(inode);
int err = 0;
err = mnt_want_write_file(file);
@@ -96,13 +103,9 @@ static int hfsplus_ioctl_setflags(struct file *file, int __user *user_flags)
inode_lock(inode);
- if ((flags & (FS_IMMUTABLE_FL|FS_APPEND_FL)) ||
- inode->i_flags & (S_IMMUTABLE|S_APPEND)) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- err = -EPERM;
- goto out_unlock_inode;
- }
- }
+ err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (err)
+ goto out_unlock_inode;
/* don't silently ignore unsupported ext2 flags */
if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) {
diff --git a/fs/inode.c b/fs/inode.c
index 5f5431ec3d62..0f1e3b563c47 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -2190,3 +2190,89 @@ struct timespec64 current_time(struct inode *inode)
return timespec64_trunc(now, inode->i_sb->s_time_gran);
}
EXPORT_SYMBOL(current_time);
+
+/*
+ * Generic function to check FS_IOC_SETFLAGS values and reject any invalid
+ * configurations.
+ *
+ * Note: the caller should be holding i_mutex, or else be sure that they have
+ * exclusive access to the inode structure.
+ */
+int vfs_ioc_setflags_prepare(struct inode *inode, unsigned int oldflags,
+ unsigned int flags)
+{
+ /*
+ * The IMMUTABLE and APPEND_ONLY flags can only be changed by
+ * the relevant capability.
+ *
+ * This test looks nicer. Thanks to Pauline Middelink
+ */
+ if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL) &&
+ !capable(CAP_LINUX_IMMUTABLE))
+ return -EPERM;
+
+ return 0;
+}
+EXPORT_SYMBOL(vfs_ioc_setflags_prepare);
+
+/*
+ * Generic function to check FS_IOC_FSSETXATTR values and reject any invalid
+ * configurations.
+ *
+ * Note: the caller should be holding i_mutex, or else be sure that they have
+ * exclusive access to the inode structure.
+ */
+int vfs_ioc_fssetxattr_check(struct inode *inode, const struct fsxattr *old_fa,
+ struct fsxattr *fa)
+{
+ /*
+ * Can't modify an immutable/append-only file unless we have
+ * appropriate permission.
+ */
+ if ((old_fa->fsx_xflags ^ fa->fsx_xflags) &
+ (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND) &&
+ !capable(CAP_LINUX_IMMUTABLE))
+ return -EPERM;
+
+ /*
+ * Project Quota ID state is only allowed to change from within the init
+ * namespace. Enforce that restriction only if we are trying to change
+ * the quota ID state. Everything else is allowed in user namespaces.
+ */
+ if (current_user_ns() != &init_user_ns) {
+ if (old_fa->fsx_projid != fa->fsx_projid)
+ return -EINVAL;
+ if ((old_fa->fsx_xflags ^ fa->fsx_xflags) &
+ FS_XFLAG_PROJINHERIT)
+ return -EINVAL;
+ }
+
+ /* Check extent size hints. */
+ if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(inode->i_mode))
+ return -EINVAL;
+
+ if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
+ !S_ISDIR(inode->i_mode))
+ return -EINVAL;
+
+ if ((fa->fsx_xflags & FS_XFLAG_COWEXTSIZE) &&
+ !S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
+ return -EINVAL;
+
+ /*
+ * It is only valid to set the DAX flag on regular files and
+ * directories on filesystems.
+ */
+ if ((fa->fsx_xflags & FS_XFLAG_DAX) &&
+ !(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
+ return -EINVAL;
+
+ /* Extent size hints of zero turn off the flags. */
+ if (fa->fsx_extsize == 0)
+ fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
+ if (fa->fsx_cowextsize == 0)
+ fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
+
+ return 0;
+}
+EXPORT_SYMBOL(vfs_ioc_fssetxattr_check);
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index ba34dae8bd9f..10ee0ecca1a8 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -98,24 +98,16 @@ long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
/* Lock against other parallel changes of flags */
inode_lock(inode);
- oldflags = jfs_inode->mode2;
-
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- */
- if ((oldflags & JFS_IMMUTABLE_FL) ||
- ((flags ^ oldflags) &
- (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- inode_unlock(inode);
- err = -EPERM;
- goto setflags_out;
- }
+ oldflags = jfs_map_ext2(jfs_inode->mode2 & JFS_FL_USER_VISIBLE,
+ 0);
+ err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (err) {
+ inode_unlock(inode);
+ goto setflags_out;
}
flags = flags & JFS_FL_USER_MODIFIABLE;
- flags |= oldflags & ~JFS_FL_USER_MODIFIABLE;
+ flags |= jfs_inode->mode2 & ~JFS_FL_USER_MODIFIABLE;
jfs_inode->mode2 = flags;
jfs_set_inode_flags(inode);
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 9b96d79eea6c..91b9dac6b2cc 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -148,13 +148,8 @@ static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp,
oldflags = NILFS_I(inode)->i_flags;
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by the
- * relevant capability.
- */
- ret = -EPERM;
- if (((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) &&
- !capable(CAP_LINUX_IMMUTABLE))
+ ret = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (ret)
goto out;
ret = nilfs_transaction_begin(inode->i_sb, &ti, 0);
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 994726ada857..d6f7b299eb23 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -106,16 +106,9 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
flags = flags & mask;
flags |= oldflags & ~mask;
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- */
- status = -EPERM;
- if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) &
- (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) {
- if (!capable(CAP_LINUX_IMMUTABLE))
- goto bail_unlock;
- }
+ status = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (status)
+ goto bail_unlock;
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
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);
}
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index acbbaf7a0bb2..45e1a5d11af3 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -74,13 +74,11 @@ long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
err = -EPERM;
goto setflags_out;
}
- if (((flags ^ REISERFS_I(inode)->
- i_attrs) & (REISERFS_IMMUTABLE_FL |
- REISERFS_APPEND_FL))
- && !capable(CAP_LINUX_IMMUTABLE)) {
- err = -EPERM;
+ err = vfs_ioc_setflags_prepare(inode,
+ REISERFS_I(inode)->i_attrs,
+ flags);
+ if (err)
goto setflags_out;
- }
if ((flags & REISERFS_NOTAIL_FL) &&
S_ISREG(inode->i_mode)) {
int result;
diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c
index 4f1a397fda69..034ad14710d1 100644
--- a/fs/ubifs/ioctl.c
+++ b/fs/ubifs/ioctl.c
@@ -107,18 +107,11 @@ static int setflags(struct inode *inode, int flags)
if (err)
return err;
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- */
mutex_lock(&ui->ui_mutex);
oldflags = ubifs2ioctl(ui->flags);
- if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE)) {
- err = -EPERM;
- goto out_unlock;
- }
- }
+ err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
+ if (err)
+ goto out_unlock;
ui->flags = ioctl2ubifs(flags);
ubifs_set_inode_flags(inode);
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index d7dfc13f30f5..fe29aa61293c 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -879,37 +879,44 @@ xfs_di2lxflags(
return flags;
}
-STATIC int
-xfs_ioc_fsgetxattr(
- xfs_inode_t *ip,
- int attr,
- void __user *arg)
+static void
+xfs_fill_fsxattr(
+ struct xfs_inode *ip,
+ bool attr,
+ struct fsxattr *fa)
{
- struct fsxattr fa;
-
- memset(&fa, 0, sizeof(struct fsxattr));
-
- xfs_ilock(ip, XFS_ILOCK_SHARED);
- fa.fsx_xflags = xfs_ip2xflags(ip);
- fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
- fa.fsx_cowextsize = ip->i_d.di_cowextsize <<
+ simple_fill_fsxattr(fa, xfs_ip2xflags(ip));
+ fa->fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
+ fa->fsx_cowextsize = ip->i_d.di_cowextsize <<
ip->i_mount->m_sb.sb_blocklog;
- fa.fsx_projid = xfs_get_projid(ip);
+ fa->fsx_projid = xfs_get_projid(ip);
if (attr) {
if (ip->i_afp) {
if (ip->i_afp->if_flags & XFS_IFEXTENTS)
- fa.fsx_nextents = xfs_iext_count(ip->i_afp);
+ fa->fsx_nextents = xfs_iext_count(ip->i_afp);
else
- fa.fsx_nextents = ip->i_d.di_anextents;
+ fa->fsx_nextents = ip->i_d.di_anextents;
} else
- fa.fsx_nextents = 0;
+ fa->fsx_nextents = 0;
} else {
if (ip->i_df.if_flags & XFS_IFEXTENTS)
- fa.fsx_nextents = xfs_iext_count(&ip->i_df);
+ fa->fsx_nextents = xfs_iext_count(&ip->i_df);
else
- fa.fsx_nextents = ip->i_d.di_nextents;
+ fa->fsx_nextents = ip->i_d.di_nextents;
}
+}
+
+STATIC int
+xfs_ioc_fsgetxattr(
+ xfs_inode_t *ip,
+ int attr,
+ void __user *arg)
+{
+ struct fsxattr fa;
+
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
+ xfs_fill_fsxattr(ip, attr, &fa);
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (copy_to_user(arg, &fa, sizeof(fa)))
@@ -1035,15 +1042,6 @@ xfs_ioctl_setattr_xflags(
if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
return -EINVAL;
- /*
- * Can't modify an immutable/append-only file unless
- * we have appropriate permission.
- */
- if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
- (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
- !capable(CAP_LINUX_IMMUTABLE))
- return -EPERM;
-
/* diflags2 only valid for v3 inodes. */
di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
if (di_flags2 && ip->i_d.di_version < 3)
@@ -1202,39 +1200,31 @@ xfs_ioctl_setattr_check_extsize(
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
-
- if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
- return -EINVAL;
-
- if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
- !S_ISDIR(VFS_I(ip)->i_mode))
- return -EINVAL;
+ xfs_extlen_t size;
+ xfs_fsblock_t extsize_fsb;
if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
return -EINVAL;
- if (fa->fsx_extsize != 0) {
- xfs_extlen_t size;
- xfs_fsblock_t extsize_fsb;
-
- extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
- if (extsize_fsb > MAXEXTLEN)
- return -EINVAL;
+ if (fa->fsx_extsize == 0)
+ return 0;
- if (XFS_IS_REALTIME_INODE(ip) ||
- (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
- size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
- } else {
- size = mp->m_sb.sb_blocksize;
- if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
- return -EINVAL;
- }
+ extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
+ if (extsize_fsb > MAXEXTLEN)
+ return -EINVAL;
- if (fa->fsx_extsize % size)
+ if (XFS_IS_REALTIME_INODE(ip) ||
+ (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
+ size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
+ } else {
+ size = mp->m_sb.sb_blocksize;
+ if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
return -EINVAL;
- } else
- fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
+ }
+
+ if (fa->fsx_extsize % size)
+ return -EINVAL;
return 0;
}
@@ -1260,6 +1250,8 @@ xfs_ioctl_setattr_check_cowextsize(
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
+ xfs_extlen_t size;
+ xfs_fsblock_t cowextsize_fsb;
if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
return 0;
@@ -1268,25 +1260,19 @@ xfs_ioctl_setattr_check_cowextsize(
ip->i_d.di_version != 3)
return -EINVAL;
- if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
- return -EINVAL;
-
- if (fa->fsx_cowextsize != 0) {
- xfs_extlen_t size;
- xfs_fsblock_t cowextsize_fsb;
+ if (fa->fsx_cowextsize == 0)
+ return 0;
- cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
- if (cowextsize_fsb > MAXEXTLEN)
- return -EINVAL;
+ cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
+ if (cowextsize_fsb > MAXEXTLEN)
+ return -EINVAL;
- size = mp->m_sb.sb_blocksize;
- if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
- return -EINVAL;
+ size = mp->m_sb.sb_blocksize;
+ if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
+ return -EINVAL;
- if (fa->fsx_cowextsize % size)
- return -EINVAL;
- } else
- fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
+ if (fa->fsx_cowextsize % size)
+ return -EINVAL;
return 0;
}
@@ -1300,21 +1286,6 @@ xfs_ioctl_setattr_check_projid(
if (fa->fsx_projid > (uint16_t)-1 &&
!xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
return -EINVAL;
-
- /*
- * Project Quota ID state is only allowed to change from within the init
- * namespace. Enforce that restriction only if we are trying to change
- * the quota ID state. Everything else is allowed in user namespaces.
- */
- if (current_user_ns() == &init_user_ns)
- return 0;
-
- if (xfs_get_projid(ip) != fa->fsx_projid)
- return -EINVAL;
- if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
- (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
- return -EINVAL;
-
return 0;
}
@@ -1323,6 +1294,7 @@ xfs_ioctl_setattr(
xfs_inode_t *ip,
struct fsxattr *fa)
{
+ struct fsxattr old_fa;
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
struct xfs_dquot *udqp = NULL;
@@ -1370,7 +1342,6 @@ xfs_ioctl_setattr(
goto error_free_dquots;
}
-
if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
xfs_get_projid(ip) != fa->fsx_projid) {
code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
@@ -1379,6 +1350,11 @@ xfs_ioctl_setattr(
goto error_trans_cancel;
}
+ xfs_fill_fsxattr(ip, false, &old_fa);
+ code = vfs_ioc_fssetxattr_check(VFS_I(ip), &old_fa, fa);
+ if (code)
+ goto error_trans_cancel;
+
code = xfs_ioctl_setattr_check_extsize(ip, fa);
if (code)
goto error_trans_cancel;
@@ -1489,6 +1465,7 @@ xfs_ioc_setxflags(
{
struct xfs_trans *tp;
struct fsxattr fa;
+ struct fsxattr old_fa;
unsigned int flags;
int join_flags = 0;
int error;
@@ -1524,6 +1501,13 @@ xfs_ioc_setxflags(
goto out_drop_write;
}
+ xfs_fill_fsxattr(ip, false, &old_fa);
+ error = vfs_ioc_fssetxattr_check(VFS_I(ip), &old_fa, &fa);
+ if (error) {
+ xfs_trans_cancel(tp);
+ goto out_drop_write;
+ }
+
error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
if (error) {
xfs_trans_cancel(tp);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9193f5f6b09d..75f2ed289a3f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3556,4 +3556,16 @@ static inline struct sock *io_uring_get_socket(struct file *file)
}
#endif
+int vfs_ioc_setflags_prepare(struct inode *inode, unsigned int oldflags,
+ unsigned int flags);
+
+int vfs_ioc_fssetxattr_check(struct inode *inode, const struct fsxattr *old_fa,
+ struct fsxattr *fa);
+
+static inline void simple_fill_fsxattr(struct fsxattr *fa, __u32 xflags)
+{
+ memset(fa, 0, sizeof(*fa));
+ fa->fsx_xflags = xflags;
+}
+
#endif /* _LINUX_FS_H */
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-22 08:38:01 +0000