diff options
| author | Chao Yu <yuchao0@huawei.com> | 2018-07-26 20:21:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-27 17:24:08 +0200 |
| commit | d5beb31b6b1c0a3f7b30611c6d4b888f8d4137dd (patch) | |
| tree | 2455b3eeb6a1aeb1ed9ab89f286c8f5c731b3625 /drivers/staging/erofs | |
| parent | b17500a0fdbae10a8ce274dd523106f16d114339 (diff) | |
| download | lwn-d5beb31b6b1c0a3f7b30611c6d4b888f8d4137dd.tar.gz lwn-d5beb31b6b1c0a3f7b30611c6d4b888f8d4137dd.zip | |
staging: erofs: support special inode
This patch adds to support special inode, such as block dev, char,
socket, pipe inode.
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/erofs')
| -rw-r--r-- | drivers/staging/erofs/inode.c | 36 | ||||
| -rw-r--r-- | drivers/staging/erofs/internal.h | 1 |
2 files changed, 35 insertions, 2 deletions
diff --git a/drivers/staging/erofs/inode.c b/drivers/staging/erofs/inode.c index 15ed91963e79..c01181153d90 100644 --- a/drivers/staging/erofs/inode.c +++ b/drivers/staging/erofs/inode.c @@ -34,8 +34,18 @@ static int read_inode(struct inode *inode, void *data) vi->inode_isize = sizeof(struct erofs_inode_v2); vi->xattr_isize = ondisk_xattr_ibody_size(v2->i_xattr_icount); - vi->raw_blkaddr = le32_to_cpu(v2->i_u.raw_blkaddr); inode->i_mode = le16_to_cpu(v2->i_mode); + if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || + S_ISLNK(inode->i_mode)) { + vi->raw_blkaddr = le32_to_cpu(v2->i_u.raw_blkaddr); + } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { + inode->i_rdev = + new_decode_dev(le32_to_cpu(v2->i_u.rdev)); + } else if (S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { + inode->i_rdev = 0; + } else { + return -EIO; + } i_uid_write(inode, le32_to_cpu(v2->i_uid)); i_gid_write(inode, le32_to_cpu(v2->i_gid)); @@ -54,8 +64,18 @@ static int read_inode(struct inode *inode, void *data) vi->inode_isize = sizeof(struct erofs_inode_v1); vi->xattr_isize = ondisk_xattr_ibody_size(v1->i_xattr_icount); - vi->raw_blkaddr = le32_to_cpu(v1->i_u.raw_blkaddr); inode->i_mode = le16_to_cpu(v1->i_mode); + if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || + S_ISLNK(inode->i_mode)) { + vi->raw_blkaddr = le32_to_cpu(v1->i_u.raw_blkaddr); + } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { + inode->i_rdev = + new_decode_dev(le32_to_cpu(v1->i_u.rdev)); + } else if (S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { + inode->i_rdev = 0; + } else { + return -EIO; + } i_uid_write(inode, le16_to_cpu(v1->i_uid)); i_gid_write(inode, le16_to_cpu(v1->i_gid)); @@ -173,6 +193,12 @@ static int fill_inode(struct inode *inode, int isdir) &page_symlink_inode_operations; #endif inode_nohighmem(inode); + } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || + S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { +#ifdef CONFIG_EROFS_FS_XATTR + inode->i_op = &erofs_special_inode_operations; +#endif + init_special_inode(inode, inode->i_mode, inode->i_rdev); } else { err = -EIO; goto out_unlock; @@ -232,6 +258,12 @@ const struct inode_operations erofs_symlink_xattr_iops = { }; #endif +const struct inode_operations erofs_special_inode_operations = { +#ifdef CONFIG_EROFS_FS_XATTR + .listxattr = erofs_listxattr, +#endif +}; + #ifdef CONFIG_EROFS_FS_XATTR const struct inode_operations erofs_fast_symlink_xattr_iops = { .get_link = simple_get_link, diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h index 8a8caf0c1efc..5862705c5cae 100644 --- a/drivers/staging/erofs/internal.h +++ b/drivers/staging/erofs/internal.h @@ -252,6 +252,7 @@ extern const struct xattr_handler *erofs_xattr_handlers[]; #ifdef CONFIG_EROFS_FS_XATTR extern const struct inode_operations erofs_symlink_xattr_iops; extern const struct inode_operations erofs_fast_symlink_xattr_iops; +extern const struct inode_operations erofs_special_inode_operations; #endif static inline void set_inode_fast_symlink(struct inode *inode) |