From bacb2d816c77edefd464d6bcc04c07f92109bd7d Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 26 Jul 2011 17:25:20 +0300 Subject: [PATCH 01/14] fs: add missing unlock in default_llseek() A recent change in linux-next, 982d816581 "fs: add SEEK_HOLE and SEEK_DATA flags" added some direct returns on error, but it should have been a goto out. Signed-off-by: Dan Carpenter Signed-off-by: Al Viro --- fs/read_write.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/fs/read_write.c b/fs/read_write.c index 5907b49e4d7e..179f1c33ea57 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -166,8 +166,10 @@ loff_t default_llseek(struct file *file, loff_t offset, int origin) * long as offset isn't at the end of the file then the * offset is data. */ - if (offset >= inode->i_size) - return -ENXIO; + if (offset >= inode->i_size) { + retval = -ENXIO; + goto out; + } break; case SEEK_HOLE: /* @@ -175,8 +177,10 @@ loff_t default_llseek(struct file *file, loff_t offset, int origin) * as long as offset isn't i_size or larger, return * i_size. */ - if (offset >= inode->i_size) - return -ENXIO; + if (offset >= inode->i_size) { + retval = -ENXIO; + goto out; + } offset = inode->i_size; break; } From 5b9f4567726513a359e70f85029482c7c3714dbd Mon Sep 17 00:00:00 2001 From: Phillip Lougher Date: Tue, 26 Jul 2011 03:40:45 +0100 Subject: [PATCH 02/14] Documentation: Exporting: update description of d_splice_alias Following commits a904937 and 0c1aa9a update the d_splice_alias desciption. Signed-off-by: Phillip Lougher Signed-off-by: Al Viro --- Documentation/filesystems/nfs/Exporting | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/filesystems/nfs/Exporting b/Documentation/filesystems/nfs/Exporting index 87019d2b5981..09994c247289 100644 --- a/Documentation/filesystems/nfs/Exporting +++ b/Documentation/filesystems/nfs/Exporting @@ -92,7 +92,14 @@ For a filesystem to be exportable it must: 1/ provide the filehandle fragment routines described below. 2/ make sure that d_splice_alias is used rather than d_add when ->lookup finds an inode for a given parent and name. - Typically the ->lookup routine will end with a: + + If inode is NULL, d_splice_alias(inode, dentry) is eqivalent to + + d_add(dentry, inode), NULL + + Similarly, d_splice_alias(ERR_PTR(err), dentry) = ERR_PTR(err) + + Typically the ->lookup routine will simply end with a: return d_splice_alias(inode, dentry); } From a209dfc7b0d94bd6fa94553c097836a2e6d0f0ba Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 26 Jul 2011 11:36:34 +0200 Subject: [PATCH 03/14] vfs: dont chain pipe/anon/socket on superblock s_inodes list Workloads using pipes and sockets hit inode_sb_list_lock contention. superblock s_inodes list is needed for quota, dirty, pagecache and fsnotify management. pipe/anon/socket fs are clearly not candidates for these. Signed-off-by: Eric Dumazet Reviewed-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/anon_inodes.c | 2 +- fs/inode.c | 39 ++++++++++++++++++++++++++++++--------- fs/pipe.c | 2 +- include/linux/fs.h | 3 ++- net/socket.c | 2 +- 5 files changed, 35 insertions(+), 13 deletions(-) diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index 4d433d34736f..f11e43ed907d 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -187,7 +187,7 @@ EXPORT_SYMBOL_GPL(anon_inode_getfd); */ static struct inode *anon_inode_mkinode(void) { - struct inode *inode = new_inode(anon_inode_mnt->mnt_sb); + struct inode *inode = new_inode_pseudo(anon_inode_mnt->mnt_sb); if (!inode) return ERR_PTR(-ENOMEM); diff --git a/fs/inode.c b/fs/inode.c index 96c77b81167c..319b93b55570 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -362,9 +362,11 @@ EXPORT_SYMBOL_GPL(inode_sb_list_add); static inline void inode_sb_list_del(struct inode *inode) { - spin_lock(&inode_sb_list_lock); - list_del_init(&inode->i_sb_list); - spin_unlock(&inode_sb_list_lock); + if (!list_empty(&inode->i_sb_list)) { + spin_lock(&inode_sb_list_lock); + list_del_init(&inode->i_sb_list); + spin_unlock(&inode_sb_list_lock); + } } static unsigned long hash(struct super_block *sb, unsigned long hashval) @@ -796,6 +798,29 @@ unsigned int get_next_ino(void) } EXPORT_SYMBOL(get_next_ino); +/** + * new_inode_pseudo - obtain an inode + * @sb: superblock + * + * Allocates a new inode for given superblock. + * Inode wont be chained in superblock s_inodes list + * This means : + * - fs can't be unmount + * - quotas, fsnotify, writeback can't work + */ +struct inode *new_inode_pseudo(struct super_block *sb) +{ + struct inode *inode = alloc_inode(sb); + + if (inode) { + spin_lock(&inode->i_lock); + inode->i_state = 0; + spin_unlock(&inode->i_lock); + INIT_LIST_HEAD(&inode->i_sb_list); + } + return inode; +} + /** * new_inode - obtain an inode * @sb: superblock @@ -814,13 +839,9 @@ struct inode *new_inode(struct super_block *sb) spin_lock_prefetch(&inode_sb_list_lock); - inode = alloc_inode(sb); - if (inode) { - spin_lock(&inode->i_lock); - inode->i_state = 0; - spin_unlock(&inode->i_lock); + inode = new_inode_pseudo(sb); + if (inode) inode_sb_list_add(inode); - } return inode; } EXPORT_SYMBOL(new_inode); diff --git a/fs/pipe.c b/fs/pipe.c index 1b7f9af67ccf..0e0be1dc0f8e 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -948,7 +948,7 @@ static const struct dentry_operations pipefs_dentry_operations = { static struct inode * get_pipe_inode(void) { - struct inode *inode = new_inode(pipe_mnt->mnt_sb); + struct inode *inode = new_inode_pseudo(pipe_mnt->mnt_sb); struct pipe_inode_info *pipe; if (!inode) diff --git a/include/linux/fs.h b/include/linux/fs.h index a6658043258a..cc363fa7bb82 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2310,7 +2310,8 @@ extern void __iget(struct inode * inode); extern void iget_failed(struct inode *); extern void end_writeback(struct inode *); extern void __destroy_inode(struct inode *); -extern struct inode *new_inode(struct super_block *); +extern struct inode *new_inode_pseudo(struct super_block *sb); +extern struct inode *new_inode(struct super_block *sb); extern void free_inode_nonrcu(struct inode *inode); extern int should_remove_suid(struct dentry *); extern int file_remove_suid(struct file *); diff --git a/net/socket.c b/net/socket.c index 02dc82db3d23..26ed35c7751e 100644 --- a/net/socket.c +++ b/net/socket.c @@ -467,7 +467,7 @@ static struct socket *sock_alloc(void) struct inode *inode; struct socket *sock; - inode = new_inode(sock_mnt->mnt_sb); + inode = new_inode_pseudo(sock_mnt->mnt_sb); if (!inode) return NULL; From 24a01d4ee4ee9196c1acc58c64dc216ba2578f1f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 12:57:42 -0400 Subject: [PATCH 04/14] v9fs_iop_get_acl: get rid of unused variable Signed-off-by: Al Viro --- fs/9p/acl.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/9p/acl.c b/fs/9p/acl.c index 814be079c185..e9cb57f07546 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -98,7 +98,6 @@ static struct posix_acl *v9fs_get_cached_acl(struct inode *inode, int type) struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type) { - struct posix_acl *acl; struct v9fs_session_info *v9ses; v9ses = v9fs_inode2v9ses(inode); From da404dc0b1fe76b06a8d094e3ef1af9ec8252cec Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 04:35:42 -0400 Subject: [PATCH 05/14] snd_msnd ->mode is fmode_t, not mode_t we put FMODE_... in there Signed-off-by: Al Viro --- sound/isa/msnd/msnd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/isa/msnd/msnd.h b/sound/isa/msnd/msnd.h index 3773e242b58e..a168ba3313ac 100644 --- a/sound/isa/msnd/msnd.h +++ b/sound/isa/msnd/msnd.h @@ -249,7 +249,7 @@ struct snd_msnd { /* State variables */ enum { msndClassic, msndPinnacle } type; - mode_t mode; + fmode_t mode; unsigned long flags; #define F_RESETTING 0 #define F_HAVEDIGITAL 1 From 61effb519cbf0b2973c65070a890fabfcbf84756 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 24 Jul 2011 17:11:33 -0400 Subject: [PATCH 06/14] jffs2: S_ISLNK(mode & S_IFMT) is pointless it's S_ISLNK(mode), TYVM... Signed-off-by: Al Viro --- fs/jffs2/fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index eeead33d8ef0..b81b35ddf4e4 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -80,7 +80,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE); if (ret) { jffs2_free_raw_inode(ri); - if (S_ISLNK(inode->i_mode & S_IFMT)) + if (S_ISLNK(inode->i_mode)) kfree(mdata); return ret; } From ed476418394f12d47f27a75424c237a94d244f10 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 24 Jul 2011 23:31:06 -0400 Subject: [PATCH 07/14] pci-label.c: size_t misspelled as mode_t no, really, strlen() and snprintf() do not return mode_t values... Signed-off-by: Al Viro --- drivers/pci/pci-label.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/pci-label.c b/drivers/pci/pci-label.c index 77cb2a14c896..81525ae5d869 100644 --- a/drivers/pci/pci-label.c +++ b/drivers/pci/pci-label.c @@ -55,7 +55,7 @@ enum smbios_attr_enum { SMBIOS_ATTR_INSTANCE_SHOW, }; -static mode_t +static size_t find_smbios_instance_string(struct pci_dev *pdev, char *buf, enum smbios_attr_enum attribute) { From 4b2a2c67415f1ab128f1d0b340fe6d13363335e5 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 04:30:35 -0400 Subject: [PATCH 08/14] ima: fmode_t misspelled as mode_t... Signed-off-by: Al Viro --- security/integrity/ima/ima_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index 39d66dc2b8e9..26b46ff74663 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -86,7 +86,7 @@ static void ima_check_last_writer(struct ima_iint_cache *iint, struct inode *inode, struct file *file) { - mode_t mode = file->f_mode; + fmode_t mode = file->f_mode; mutex_lock(&iint->mutex); if (mode & FMODE_WRITE && From 569254b0cc4e125ffde48780b215ecaf5f72bbf4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 24 Jul 2011 17:08:40 -0400 Subject: [PATCH 09/14] btrfs: S_ISREG(mode) is not mode & S_IFREG... Signed-off-by: Al Viro --- fs/btrfs/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index e91b097e7252..caa26ab5ed68 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4467,7 +4467,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, inode->i_generation = BTRFS_I(inode)->generation; btrfs_set_inode_space_info(root, inode); - if (mode & S_IFDIR) + if (S_ISDIR(mode)) owner = 0; else owner = 1; @@ -4512,7 +4512,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, btrfs_inherit_iflags(inode, dir); - if ((mode & S_IFREG)) { + if (S_ISREG(mode)) { if (btrfs_test_opt(root, NODATASUM)) BTRFS_I(inode)->flags |= BTRFS_INODE_NODATASUM; if (btrfs_test_opt(root, NODATACOW) || From 41c96486f238e6a545f52215f95fe69748abf603 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 02:34:33 -0400 Subject: [PATCH 10/14] omfs: fix (mode & S_IFDIR) abuse granted, on a filesystem that has only regular files and directories it happens to work, but really should be S_ISDIR(mode)... Signed-off-by: Al Viro --- fs/omfs/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c index 3b8d3979e03b..98e544274390 100644 --- a/fs/omfs/dir.c +++ b/fs/omfs/dir.c @@ -93,7 +93,7 @@ int omfs_make_empty(struct inode *inode, struct super_block *sb) memset(bh->b_data, 0, sizeof(struct omfs_inode)); - if (inode->i_mode & S_IFDIR) { + if (S_ISDIR(inode->i_mode)) { memset(&bh->b_data[OMFS_DIR_START], 0xff, sbi->s_sys_blocksize - OMFS_DIR_START); } else From c46c887744b330795eba55fdb96343c36d481765 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 26 Jul 2011 13:33:16 -0400 Subject: [PATCH 11/14] vfs: document locking requirements for d_move, __d_move and d_materialise_unique Adding a comment to d_materialise_unique per Al's request... d_move and __d_move have some pretty substantial locking requirements, but they are not clearly documented. Add some comments spelling them out. Also, document the requirement for the i_mutex of the parent in d_materialise_unique. Cc: Al Viro Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- fs/dcache.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index be18598c7fd7..b05aac3a8cfc 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2138,8 +2138,9 @@ static void dentry_unlock_parents_for_move(struct dentry *dentry, * @target: new dentry * * Update the dcache to reflect the move of a file name. Negative - * dcache entries should not be moved in this way. Caller hold - * rename_lock. + * dcache entries should not be moved in this way. Caller must hold + * rename_lock, the i_mutex of the source and target directories, + * and the sb->s_vfs_rename_mutex if they differ. See lock_rename(). */ static void __d_move(struct dentry * dentry, struct dentry * target) { @@ -2202,7 +2203,8 @@ static void __d_move(struct dentry * dentry, struct dentry * target) * @target: new dentry * * Update the dcache to reflect the move of a file name. Negative - * dcache entries should not be moved in this way. + * dcache entries should not be moved in this way. See the locking + * requirements for __d_move. */ void d_move(struct dentry *dentry, struct dentry *target) { @@ -2320,7 +2322,8 @@ static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon) * @inode: inode to bind to the dentry, to which aliases may be attached * * Introduces an dentry into the tree, substituting an extant disconnected - * root directory alias in its place if there is one + * root directory alias in its place if there is one. Caller must hold the + * i_mutex of the parent directory. */ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode) { From abbede1b3a680e108d61aaa415ce5153296e775d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 02:31:30 -0400 Subject: [PATCH 12/14] xfs: get rid of open-coded S_ISREG(), etc. Signed-off-by: Al Viro --- fs/xfs/linux-2.6/xfs_ioctl.c | 4 ++-- fs/xfs/xfs_bmap.c | 7 +++---- fs/xfs/xfs_dir2.c | 16 ++++++++-------- fs/xfs/xfs_filestream.c | 2 +- fs/xfs/xfs_inode.c | 16 ++++++++-------- fs/xfs/xfs_inode.h | 2 +- fs/xfs/xfs_log_recover.c | 4 ++-- fs/xfs/xfs_mount.c | 2 +- fs/xfs/xfs_rename.c | 4 ++-- fs/xfs/xfs_vnodeops.c | 10 +++++----- 10 files changed, 33 insertions(+), 34 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index acca2c5ca3fa..14fc00e32f6b 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -850,14 +850,14 @@ xfs_set_diflags( di_flags |= XFS_DIFLAG_NODEFRAG; if (xflags & XFS_XFLAG_FILESTREAM) di_flags |= XFS_DIFLAG_FILESTREAM; - if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(ip->i_d.di_mode)) { if (xflags & XFS_XFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_RTINHERIT; if (xflags & XFS_XFLAG_NOSYMLINKS) di_flags |= XFS_DIFLAG_NOSYMLINKS; if (xflags & XFS_XFLAG_EXTSZINHERIT) di_flags |= XFS_DIFLAG_EXTSZINHERIT; - } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { + } else if (S_ISREG(ip->i_d.di_mode)) { if (xflags & XFS_XFLAG_REALTIME) di_flags |= XFS_DIFLAG_REALTIME; if (xflags & XFS_XFLAG_EXTSIZE) diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index c51a3f903633..ab3e5c6c4642 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -414,7 +414,7 @@ xfs_bmap_add_attrfork_local( if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) return 0; - if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(ip->i_d.di_mode)) { mp = ip->i_mount; memset(&dargs, 0, sizeof(dargs)); dargs.dp = ip; @@ -3344,8 +3344,7 @@ xfs_bmap_local_to_extents( * We don't want to deal with the case of keeping inode data inline yet. * So sending the data fork of a regular inode is invalid. */ - ASSERT(!((ip->i_d.di_mode & S_IFMT) == S_IFREG && - whichfork == XFS_DATA_FORK)); + ASSERT(!(S_ISREG(ip->i_d.di_mode) && whichfork == XFS_DATA_FORK)); ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); flags = 0; @@ -4052,7 +4051,7 @@ xfs_bmap_one_block( #ifndef DEBUG if (whichfork == XFS_DATA_FORK) { - return ((ip->i_d.di_mode & S_IFMT) == S_IFREG) ? + return S_ISREG(ip->i_d.di_mode) ? (ip->i_size == ip->i_mount->m_sb.sb_blocksize) : (ip->i_d.di_size == ip->i_mount->m_sb.sb_blocksize); } diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index 4580ce00aeb4..a2e27010c7fb 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -121,7 +121,7 @@ xfs_dir_isempty( { xfs_dir2_sf_hdr_t *sfp; - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if (dp->i_d.di_size == 0) /* might happen during shutdown. */ return 1; if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp)) @@ -179,7 +179,7 @@ xfs_dir_init( memset((char *)&args, 0, sizeof(args)); args.dp = dp; args.trans = tp; - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if ((error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino))) return error; return xfs_dir2_sf_create(&args, pdp->i_ino); @@ -202,7 +202,7 @@ xfs_dir_createname( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) return rval; XFS_STATS_INC(xs_dir_create); @@ -278,7 +278,7 @@ xfs_dir_lookup( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_lookup); memset(&args, 0, sizeof(xfs_da_args_t)); @@ -333,7 +333,7 @@ xfs_dir_removename( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_remove); memset(&args, 0, sizeof(xfs_da_args_t)); @@ -382,7 +382,7 @@ xfs_readdir( if (XFS_FORCED_SHUTDOWN(dp->i_mount)) return XFS_ERROR(EIO); - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_getdents); if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) @@ -414,7 +414,7 @@ xfs_dir_replace( int rval; int v; /* type-checking value */ - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) return rval; @@ -464,7 +464,7 @@ xfs_dir_canenter( if (resblks) return 0; - ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR); + ASSERT(S_ISDIR(dp->i_d.di_mode)); memset(&args, 0, sizeof(xfs_da_args_t)); args.name = name->name; diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 9124425b7f2f..87fceceee2db 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -344,7 +344,7 @@ _xfs_filestream_update_ag( * Either ip is a regular file and pip is a directory, or ip is a * directory and pip is NULL. */ - ASSERT(ip && (((ip->i_d.di_mode & S_IFREG) && pip && + ASSERT(ip && ((S_ISREG(ip->i_d.di_mode) && pip && (pip->i_d.di_mode & S_IFDIR)) || ((ip->i_d.di_mode & S_IFDIR) && !pip))); diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 3cc21ddf9f7e..2fcca4b03ed3 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -368,7 +368,7 @@ xfs_iformat( /* * no local regular files yet */ - if (unlikely((be16_to_cpu(dip->di_mode) & S_IFMT) == S_IFREG)) { + if (unlikely(S_ISREG(be16_to_cpu(dip->di_mode)))) { xfs_warn(ip->i_mount, "corrupt inode %Lu (local format for regular file).", (unsigned long long) ip->i_ino); @@ -1040,7 +1040,7 @@ xfs_ialloc( if (pip && XFS_INHERIT_GID(pip)) { ip->i_d.di_gid = pip->i_d.di_gid; - if ((pip->i_d.di_mode & S_ISGID) && (mode & S_IFMT) == S_IFDIR) { + if ((pip->i_d.di_mode & S_ISGID) && S_ISDIR(mode)) { ip->i_d.di_mode |= S_ISGID; } } @@ -1097,14 +1097,14 @@ xfs_ialloc( if (pip && (pip->i_d.di_flags & XFS_DIFLAG_ANY)) { uint di_flags = 0; - if ((mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(mode)) { if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_RTINHERIT; if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) { di_flags |= XFS_DIFLAG_EXTSZINHERIT; ip->i_d.di_extsize = pip->i_d.di_extsize; } - } else if ((mode & S_IFMT) == S_IFREG) { + } else if (S_ISREG(mode)) { if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) di_flags |= XFS_DIFLAG_REALTIME; if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) { @@ -1188,7 +1188,7 @@ xfs_isize_check( int nimaps; xfs_bmbt_irec_t imaps[2]; - if ((ip->i_d.di_mode & S_IFMT) != S_IFREG) + if (!S_ISREG(ip->i_d.di_mode)) return; if (XFS_IS_REALTIME_INODE(ip)) @@ -1828,7 +1828,7 @@ xfs_ifree( ASSERT(ip->i_d.di_nextents == 0); ASSERT(ip->i_d.di_anextents == 0); ASSERT((ip->i_d.di_size == 0 && ip->i_size == 0) || - ((ip->i_d.di_mode & S_IFMT) != S_IFREG)); + (!S_ISREG(ip->i_d.di_mode))); ASSERT(ip->i_d.di_nblocks == 0); /* @@ -2671,7 +2671,7 @@ xfs_iflush_int( __func__, ip->i_ino, ip, ip->i_d.di_magic); goto corrupt_out; } - if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { + if (S_ISREG(ip->i_d.di_mode)) { if (XFS_TEST_ERROR( (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) && (ip->i_d.di_format != XFS_DINODE_FMT_BTREE), @@ -2681,7 +2681,7 @@ xfs_iflush_int( __func__, ip->i_ino, ip); goto corrupt_out; } - } else if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + } else if (S_ISDIR(ip->i_d.di_mode)) { if (XFS_TEST_ERROR( (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) && (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) && diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index a97644ab945a..2380a4bcbece 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -263,7 +263,7 @@ typedef struct xfs_inode { struct inode i_vnode; /* embedded VFS inode */ } xfs_inode_t; -#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ +#define XFS_ISIZE(ip) S_ISREG((ip)->i_d.di_mode) ? \ (ip)->i_size : (ip)->i_d.di_size; /* Convert from vfs inode to xfs inode */ diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 8fe4206de057..052a2c0ec5fb 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2283,7 +2283,7 @@ xlog_recover_inode_pass2( /* Take the opportunity to reset the flush iteration count */ dicp->di_flushiter = 0; - if (unlikely((dicp->di_mode & S_IFMT) == S_IFREG)) { + if (unlikely(S_ISREG(dicp->di_mode))) { if ((dicp->di_format != XFS_DINODE_FMT_EXTENTS) && (dicp->di_format != XFS_DINODE_FMT_BTREE)) { XFS_CORRUPTION_ERROR("xlog_recover_inode_pass2(3)", @@ -2296,7 +2296,7 @@ xlog_recover_inode_pass2( error = EFSCORRUPTED; goto error; } - } else if (unlikely((dicp->di_mode & S_IFMT) == S_IFDIR)) { + } else if (unlikely(S_ISDIR(dicp->di_mode))) { if ((dicp->di_format != XFS_DINODE_FMT_EXTENTS) && (dicp->di_format != XFS_DINODE_FMT_BTREE) && (dicp->di_format != XFS_DINODE_FMT_LOCAL)) { diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 7f25245da289..092e16ae4d9d 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1331,7 +1331,7 @@ xfs_mountfs( ASSERT(rip != NULL); - if (unlikely((rip->i_d.di_mode & S_IFMT) != S_IFDIR)) { + if (unlikely(!S_ISDIR(rip->i_d.di_mode))) { xfs_warn(mp, "corrupted root inode %llu: not a directory", (unsigned long long)rip->i_ino); xfs_iunlock(rip, XFS_ILOCK_EXCL); diff --git a/fs/xfs/xfs_rename.c b/fs/xfs/xfs_rename.c index 77a59891734e..df78c297d1a1 100644 --- a/fs/xfs/xfs_rename.c +++ b/fs/xfs/xfs_rename.c @@ -116,7 +116,7 @@ xfs_rename( trace_xfs_rename(src_dp, target_dp, src_name, target_name); new_parent = (src_dp != target_dp); - src_is_directory = ((src_ip->i_d.di_mode & S_IFMT) == S_IFDIR); + src_is_directory = S_ISDIR(src_ip->i_d.di_mode); if (src_is_directory) { /* @@ -226,7 +226,7 @@ xfs_rename( * target and source are directories and that target can be * destroyed, or that neither is a directory. */ - if ((target_ip->i_d.di_mode & S_IFMT) == S_IFDIR) { + if (S_ISDIR(target_ip->i_d.di_mode)) { /* * Make sure target dir is empty. */ diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 88d121486c52..9322e13f0c63 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -121,7 +121,7 @@ xfs_readlink( xfs_ilock(ip, XFS_ILOCK_SHARED); - ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFLNK); + ASSERT(S_ISLNK(ip->i_d.di_mode)); ASSERT(ip->i_d.di_size <= MAXPATHLEN); pathlen = ip->i_d.di_size; @@ -529,7 +529,7 @@ xfs_release( if (ip->i_d.di_nlink == 0) return 0; - if ((((ip->i_d.di_mode & S_IFMT) == S_IFREG) && + if ((S_ISREG(ip->i_d.di_mode) && ((ip->i_size > 0) || (VN_CACHED(VFS_I(ip)) > 0 || ip->i_delayed_blks > 0)) && (ip->i_df.if_flags & XFS_IFEXTENTS)) && @@ -610,7 +610,7 @@ xfs_inactive( truncate = ((ip->i_d.di_nlink == 0) && ((ip->i_d.di_size != 0) || (ip->i_size != 0) || (ip->i_d.di_nextents > 0) || (ip->i_delayed_blks > 0)) && - ((ip->i_d.di_mode & S_IFMT) == S_IFREG)); + S_ISREG(ip->i_d.di_mode)); mp = ip->i_mount; @@ -621,7 +621,7 @@ xfs_inactive( goto out; if (ip->i_d.di_nlink != 0) { - if ((((ip->i_d.di_mode & S_IFMT) == S_IFREG) && + if ((S_ISREG(ip->i_d.di_mode) && ((ip->i_size > 0) || (VN_CACHED(VFS_I(ip)) > 0 || ip->i_delayed_blks > 0)) && (ip->i_df.if_flags & XFS_IFEXTENTS) && @@ -669,7 +669,7 @@ xfs_inactive( xfs_iunlock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL); return VN_INACTIVE_CACHE; } - } else if ((ip->i_d.di_mode & S_IFMT) == S_IFLNK) { + } else if (S_ISLNK(ip->i_d.di_mode)) { /* * If we get an error while cleaning up a From 03209378b4b25775bf5e6a86e86f074a1057a439 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 25 Jul 2011 20:54:24 -0400 Subject: [PATCH 13/14] xfs: fix misspelled S_IS...() mode_t is not a bitmap... Signed-off-by: Al Viro --- fs/xfs/linux-2.6/xfs_ioctl.c | 2 +- fs/xfs/xfs_filestream.c | 12 ++++++------ 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index 14fc00e32f6b..f7ce7debe14c 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -265,7 +265,7 @@ xfs_open_by_handle( return PTR_ERR(filp); } - if (inode->i_mode & S_IFREG) { + if (S_ISREG(inode->i_mode)) { filp->f_flags |= O_NOATIME; filp->f_mode |= FMODE_NOCMTIME; } diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 87fceceee2db..3ff3d9e23ded 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -345,8 +345,8 @@ _xfs_filestream_update_ag( * directory and pip is NULL. */ ASSERT(ip && ((S_ISREG(ip->i_d.di_mode) && pip && - (pip->i_d.di_mode & S_IFDIR)) || - ((ip->i_d.di_mode & S_IFDIR) && !pip))); + S_ISDIR(pip->i_d.di_mode)) || + (S_ISDIR(ip->i_d.di_mode) && !pip))); mp = ip->i_mount; cache = mp->m_filestream; @@ -537,7 +537,7 @@ xfs_filestream_lookup_ag( xfs_agnumber_t ag; int ref; - if (!(ip->i_d.di_mode & (S_IFREG | S_IFDIR))) { + if (!S_ISREG(ip->i_d.di_mode) && !S_ISDIR(ip->i_d.di_mode)) { ASSERT(0); return NULLAGNUMBER; } @@ -579,9 +579,9 @@ xfs_filestream_associate( xfs_agnumber_t ag, rotorstep, startag; int err = 0; - ASSERT(pip->i_d.di_mode & S_IFDIR); - ASSERT(ip->i_d.di_mode & S_IFREG); - if (!(pip->i_d.di_mode & S_IFDIR) || !(ip->i_d.di_mode & S_IFREG)) + ASSERT(S_ISDIR(pip->i_d.di_mode)); + ASSERT(S_ISREG(ip->i_d.di_mode)); + if (!S_ISDIR(pip->i_d.di_mode) || !S_ISREG(ip->i_d.di_mode)) return -EINVAL; mp = pip->i_mount; From e57712ebebbb9db7d8dcef216437b3171ddcf115 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Jul 2011 04:15:54 -0400 Subject: [PATCH 14/14] merge fchmod() and fchmodat() guts, kill ancient broken kludge The kludge in question is undocumented and doesn't work for 32bit binaries on amd64, sparc64 and s390. Passing (mode_t)-1 as mode had (since 0.99.14v and contrary to behaviour of any other Unix, prescriptions of POSIX, SuS and our own manpages) was kinda-sorta no-op. Note that any software relying on that (and looking for examples shows none) would be visibly broken on sparc64, where practically all userland is built 32bit. No such complaints noticed... Signed-off-by: Al Viro --- fs/open.c | 78 ++++++++++++++++++++----------------------------------- 1 file changed, 28 insertions(+), 50 deletions(-) diff --git a/fs/open.c b/fs/open.c index 739b751aa73e..f71192109457 100644 --- a/fs/open.c +++ b/fs/open.c @@ -446,74 +446,52 @@ out: return error; } -SYSCALL_DEFINE2(fchmod, unsigned int, fd, mode_t, mode) +static int chmod_common(struct path *path, umode_t mode) { - struct inode * inode; - struct dentry * dentry; - struct file * file; - int err = -EBADF; + struct inode *inode = path->dentry->d_inode; struct iattr newattrs; + int error; - file = fget(fd); - if (!file) - goto out; - - dentry = file->f_path.dentry; - inode = dentry->d_inode; - - audit_inode(NULL, dentry); - - err = mnt_want_write_file(file); - if (err) - goto out_putf; + error = mnt_want_write(path->mnt); + if (error) + return error; mutex_lock(&inode->i_mutex); - err = security_path_chmod(dentry, file->f_vfsmnt, mode); - if (err) + error = security_path_chmod(path->dentry, path->mnt, mode); + if (error) goto out_unlock; - if (mode == (mode_t) -1) - mode = inode->i_mode; newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO); newattrs.ia_valid = ATTR_MODE | ATTR_CTIME; - err = notify_change(dentry, &newattrs); + error = notify_change(path->dentry, &newattrs); out_unlock: mutex_unlock(&inode->i_mutex); - mnt_drop_write(file->f_path.mnt); -out_putf: - fput(file); -out: + mnt_drop_write(path->mnt); + return error; +} + +SYSCALL_DEFINE2(fchmod, unsigned int, fd, mode_t, mode) +{ + struct file * file; + int err = -EBADF; + + file = fget(fd); + if (file) { + audit_inode(NULL, file->f_path.dentry); + err = chmod_common(&file->f_path, mode); + fput(file); + } return err; } SYSCALL_DEFINE3(fchmodat, int, dfd, const char __user *, filename, mode_t, mode) { struct path path; - struct inode *inode; int error; - struct iattr newattrs; error = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path); - if (error) - goto out; - inode = path.dentry->d_inode; - - error = mnt_want_write(path.mnt); - if (error) - goto dput_and_out; - mutex_lock(&inode->i_mutex); - error = security_path_chmod(path.dentry, path.mnt, mode); - if (error) - goto out_unlock; - if (mode == (mode_t) -1) - mode = inode->i_mode; - newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO); - newattrs.ia_valid = ATTR_MODE | ATTR_CTIME; - error = notify_change(path.dentry, &newattrs); -out_unlock: - mutex_unlock(&inode->i_mutex); - mnt_drop_write(path.mnt); -dput_and_out: - path_put(&path); -out: + if (!error) { + error = chmod_common(&path, mode); + path_put(&path); + } return error; }