diff options
| -rw-r--r-- | fs/squashfs/Kconfig | 11 | ||||
| -rw-r--r-- | fs/squashfs/Makefile | 2 | ||||
| -rw-r--r-- | fs/squashfs/inode.c | 1 | ||||
| -rw-r--r-- | fs/squashfs/namei.c | 1 | ||||
| -rw-r--r-- | fs/squashfs/squashfs.h | 6 | ||||
| -rw-r--r-- | fs/squashfs/super.c | 4 | ||||
| -rw-r--r-- | fs/squashfs/symlink.c | 1 | ||||
| -rw-r--r-- | fs/squashfs/xattr.h | 45 |
8 files changed, 63 insertions, 8 deletions
diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig index 25a00d19d68..cc6ce8a84c2 100644 --- a/fs/squashfs/Kconfig +++ b/fs/squashfs/Kconfig @@ -26,6 +26,17 @@ config SQUASHFS If unsure, say N. +config SQUASHFS_XATTRS + bool "Squashfs XATTR support" + depends on SQUASHFS + default n + help + Saying Y here includes support for extended attributes (xattrs). + Xattrs are name:value pairs associated with inodes by + the kernel or by users (see the attr(5) manual page). + + If unsure, say N. + config SQUASHFS_EMBEDDED bool "Additional option for memory-constrained systems" diff --git a/fs/squashfs/Makefile b/fs/squashfs/Makefile index 56684d46410..2cee3e9fa45 100644 --- a/fs/squashfs/Makefile +++ b/fs/squashfs/Makefile @@ -5,5 +5,5 @@ obj-$(CONFIG_SQUASHFS) += squashfs.o squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o -squashfs-y += xattr.o xattr_id.o +squashfs-$(CONFIG_SQUASHFS_XATTRS) += xattr.o xattr_id.o diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c index 250701180a3..62e63ad2507 100644 --- a/fs/squashfs/inode.c +++ b/fs/squashfs/inode.c @@ -46,6 +46,7 @@ #include "squashfs_fs_sb.h" #include "squashfs_fs_i.h" #include "squashfs.h" +#include "xattr.h" /* * Initialise VFS inode with the base inode information common to all diff --git a/fs/squashfs/namei.c b/fs/squashfs/namei.c index 32f5b54d1ce..7a9464d08cf 100644 --- a/fs/squashfs/namei.c +++ b/fs/squashfs/namei.c @@ -63,6 +63,7 @@ #include "squashfs_fs_sb.h" #include "squashfs_fs_i.h" #include "squashfs.h" +#include "xattr.h" /* * Lookup name in the directory index, returning the location of the metadata diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h index 7d238107058..305ce15d2d2 100644 --- a/fs/squashfs/squashfs.h +++ b/fs/squashfs/squashfs.h @@ -76,12 +76,6 @@ extern int squashfs_read_inode(struct inode *, long long); /* xattr.c */ extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t); -/* xattr_id.c */ -extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *, - int *, long long *); -extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64, - u64 *, int *); - /* * Inodes, files, decompressor and xattr operations */ diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index b6425ac1c2a..88b4f860665 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -43,6 +43,7 @@ #include "squashfs_fs_i.h" #include "squashfs.h" #include "decompressor.h" +#include "xattr.h" static struct file_system_type squashfs_fs_type; static const struct super_operations squashfs_super_ops; @@ -272,7 +273,8 @@ allocate_xattr_table: if (IS_ERR(msblk->xattr_id_table)) { err = PTR_ERR(msblk->xattr_id_table); msblk->xattr_id_table = NULL; - goto failed_mount; + if (err != -ENOTSUPP) + goto failed_mount; } allocate_root: root = new_inode(sb); diff --git a/fs/squashfs/symlink.c b/fs/squashfs/symlink.c index a7ee68a8621..ec86434921e 100644 --- a/fs/squashfs/symlink.c +++ b/fs/squashfs/symlink.c @@ -41,6 +41,7 @@ #include "squashfs_fs_sb.h" #include "squashfs_fs_i.h" #include "squashfs.h" +#include "xattr.h" static int squashfs_symlink_readpage(struct file *file, struct page *page) { diff --git a/fs/squashfs/xattr.h b/fs/squashfs/xattr.h new file mode 100644 index 00000000000..4a96366bfcc --- /dev/null +++ b/fs/squashfs/xattr.h @@ -0,0 +1,45 @@ +/* + * Squashfs - a compressed read only filesystem for Linux + * + * Copyright (c) 2010 + * Phillip Lougher <phillip@lougher.demon.co.uk> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2, + * or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * xattr.h + */ + +#ifdef CONFIG_SQUASHFS_XATTRS +extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64, + u64 *, int *); +extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *, + int *, long long *); +#else +static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb, + u64 start, u64 *xattr_table_start, int *xattr_ids) +{ + ERROR("Xattrs in filesystem, these will be ignored\n"); + return ERR_PTR(-ENOTSUPP); +} + +static inline int squashfs_xattr_lookup(struct super_block *sb, + unsigned int index, int *count, int *size, long long *xattr) +{ + return 0; +} +#define squashfs_listxattr NULL +#define generic_getxattr NULL +#define squashfs_xattr_handlers NULL +#endif |