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| author | Phillip Lougher <phillip@lougher.demon.co.uk> | 2010-05-14 20:48:47 +0100 |
|---|---|---|
| committer | Phillip Lougher <phillip@lougher.demon.co.uk> | 2010-05-17 19:54:05 +0100 |
| commit | 4b5397dc24ab12afaac85be3d0863b7f6eb8b0f0 (patch) | |
| tree | bd385be428cfefcdf520f19c532196df1202d687 /fs/squashfs/super.c | |
| parent | b57f95a38233a2e73b679bea4a5453a1cc2a1cc9 (diff) | |
| download | linux-4b5397dc24ab12afaac85be3d0863b7f6eb8b0f0.tar.gz linux-4b5397dc24ab12afaac85be3d0863b7f6eb8b0f0.tar.bz2 linux-4b5397dc24ab12afaac85be3d0863b7f6eb8b0f0.zip | |
squashfs: add xattr id support
This patch adds support for mapping xattr ids (stored in inodes)
into the on-disk location of the xattrs themselves.
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Diffstat (limited to 'fs/squashfs/super.c')
| -rw-r--r-- | fs/squashfs/super.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index 48b6f4a385a6..c4dfc393fa52 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -36,6 +36,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/magic.h> +#include <linux/xattr.h> #include "squashfs_fs.h" #include "squashfs_fs_sb.h" @@ -82,7 +83,7 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent) long long root_inode; unsigned short flags; unsigned int fragments; - u64 lookup_table_start; + u64 lookup_table_start, xattr_id_table_start; int err; TRACE("Entered squashfs_fill_superblock\n"); @@ -143,7 +144,7 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent) * Check if there's xattrs in the filesystem. These are not * supported in this version, so warn that they will be ignored. */ - if (le64_to_cpu(sblk->xattr_table_start) != SQUASHFS_INVALID_BLK) + if (le64_to_cpu(sblk->xattr_id_table_start) != SQUASHFS_INVALID_BLK) ERROR("Xattrs in filesystem, these will be ignored\n"); /* Check the filesystem does not extend beyond the end of the @@ -253,7 +254,7 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent) allocate_lookup_table: lookup_table_start = le64_to_cpu(sblk->lookup_table_start); if (lookup_table_start == SQUASHFS_INVALID_BLK) - goto allocate_root; + goto allocate_xattr_table; /* Allocate and read inode lookup table */ msblk->inode_lookup_table = squashfs_read_inode_lookup_table(sb, @@ -266,6 +267,19 @@ allocate_lookup_table: sb->s_export_op = &squashfs_export_ops; +allocate_xattr_table: + xattr_id_table_start = le64_to_cpu(sblk->xattr_id_table_start); + if (xattr_id_table_start == SQUASHFS_INVALID_BLK) + goto allocate_root; + + /* Allocate and read xattr id lookup table */ + msblk->xattr_id_table = squashfs_read_xattr_id_table(sb, + xattr_id_table_start, &msblk->xattr_table, &msblk->xattr_ids); + if (IS_ERR(msblk->xattr_id_table)) { + err = PTR_ERR(msblk->xattr_id_table); + msblk->xattr_id_table = NULL; + goto failed_mount; + } allocate_root: root = new_inode(sb); if (!root) { @@ -301,6 +315,7 @@ failed_mount: kfree(msblk->inode_lookup_table); kfree(msblk->fragment_index); kfree(msblk->id_table); + kfree(msblk->xattr_id_table); kfree(sb->s_fs_info); sb->s_fs_info = NULL; kfree(sblk); @@ -355,6 +370,7 @@ static void squashfs_put_super(struct super_block *sb) kfree(sbi->fragment_index); kfree(sbi->meta_index); kfree(sbi->inode_lookup_table); + kfree(sbi->xattr_id_table); kfree(sb->s_fs_info); sb->s_fs_info = NULL; } |