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staging: erofs: support statx 

statx() has already been supported in commit a528d35e8b
("statx: Add a system call to make enhanced file info available"),
user programs can get more useful attributes.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2019-05-28 11:19:42 +08:00 committed by Greg Kroah-Hartman
parent 1f48d05628
commit 89f27eded5
3 changed files with 23 additions and 0 deletions
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20
drivers/staging/erofs/inode.c
View File

@ -285,7 +285,25 @@ struct inode *erofs_iget(struct super_block *sb,
return inode;
}
int erofs_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags)
{
struct inode *const inode = d_inode(path->dentry);
struct erofs_vnode *const vi = EROFS_V(inode);
if (vi->data_mapping_mode == EROFS_INODE_LAYOUT_COMPRESSION)
stat->attributes |= STATX_ATTR_COMPRESSED;
stat->attributes |= STATX_ATTR_IMMUTABLE;
stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
STATX_ATTR_IMMUTABLE);
generic_fillattr(inode, stat);
return 0;
}
const struct inode_operations erofs_generic_iops = {
.getattr = erofs_getattr,
#ifdef CONFIG_EROFS_FS_XATTR
.listxattr = erofs_listxattr,
#endif
@ -294,6 +312,7 @@ const struct inode_operations erofs_generic_iops = {
const struct inode_operations erofs_symlink_iops = {
.get_link = page_get_link,
.getattr = erofs_getattr,
#ifdef CONFIG_EROFS_FS_XATTR
.listxattr = erofs_listxattr,
#endif
@ -302,6 +321,7 @@ const struct inode_operations erofs_symlink_iops = {
const struct inode_operations erofs_fast_symlink_iops = {
.get_link = simple_get_link,
.getattr = erofs_getattr,
#ifdef CONFIG_EROFS_FS_XATTR
.listxattr = erofs_listxattr,
#endif

2
drivers/staging/erofs/internal.h
View File

@ -556,6 +556,8 @@ static inline bool is_inode_fast_symlink(struct inode *inode)
}
struct inode *erofs_iget(struct super_block *sb, erofs_nid_t nid, bool dir);
int erofs_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags);
/* namei.c */
extern const struct inode_operations erofs_dir_iops;

1
drivers/staging/erofs/namei.c
View File

@ -247,6 +247,7 @@ static struct dentry *erofs_lookup(struct inode *dir,
const struct inode_operations erofs_dir_iops = {
.lookup = erofs_lookup,
.getattr = erofs_getattr,
#ifdef CONFIG_EROFS_FS_XATTR
.listxattr = erofs_listxattr,
#endif