ext2: support statx syscall

Since statx, every filesystem should fill the attributes/attributes_mask
in routine getattr. But the generic_fillattr has not fill that, so add
ext2_getattr to do this. This can fix generic/424 while testing ext2.

Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>

5 files changed, 32 insertions, 0 deletions

diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index e770cd100a6a..ae0cd9e81e48 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -774,6 +774,7 @@ extern int ext2_write_inode (struct inode *, struct writeback_control *);
 extern void ext2_evict_inode(struct inode *);
 extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
 extern int ext2_setattr (struct dentry *, struct iattr *);
+extern int ext2_getattr (const struct path *, struct kstat *, u32, unsigned int);
 extern void ext2_set_inode_flags(struct inode *inode);
 extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                        u64 start, u64 len);
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 28b2609f25c1..39c4772e96c9 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -199,6 +199,7 @@ const struct inode_operations ext2_file_inode_operations = {
 #ifdef CONFIG_EXT2_FS_XATTR
         .listxattr      = ext2_listxattr,
 #endif
+        .getattr        = ext2_getattr,
         .setattr        = ext2_setattr,
         .get_acl        = ext2_get_acl,
         .set_acl        = ext2_set_acl,
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 17cdefdc62a8..c27c27300d95 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1637,6 +1637,32 @@ int ext2_write_inode(struct inode *inode, struct writeback_control *wbc)
         return __ext2_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
 }
 
+int ext2_getattr(const struct path *path, struct kstat *stat,
+                u32 request_mask, unsigned int query_falgs)
+{
+        struct inode *inode = d_inode(path->dentry);
+        struct ext2_inode_info *ei = EXT2_I(inode);
+        unsigned int flags;
+
+        flags = ei->i_flags & EXT2_FL_USER_VISIBLE;
+        if (flags & EXT2_APPEND_FL)
+                stat->attributes |= STATX_ATTR_APPEND;
+        if (flags & EXT2_COMPR_FL)
+                stat->attributes |= STATX_ATTR_COMPRESSED;
+        if (flags & EXT2_IMMUTABLE_FL)
+                stat->attributes |= STATX_ATTR_IMMUTABLE;
+        if (flags & EXT2_NODUMP_FL)
+                stat->attributes |= STATX_ATTR_NODUMP;
+        stat->attributes_mask |= (STATX_ATTR_APPEND |
+                        STATX_ATTR_COMPRESSED |
+                        STATX_ATTR_ENCRYPTED |
+                        STATX_ATTR_IMMUTABLE |
+                        STATX_ATTR_NODUMP);
+
+        generic_fillattr(inode, stat);
+        return 0;
+}
+
 int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
 {
         struct inode *inode = d_inode(dentry);
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 0c26dcc5d850..ccfbbf59e2fc 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -416,6 +416,7 @@ const struct inode_operations ext2_dir_inode_operations = {
 #ifdef CONFIG_EXT2_FS_XATTR
         .listxattr      = ext2_listxattr,
 #endif
+        .getattr        = ext2_getattr,
         .setattr        = ext2_setattr,
         .get_acl        = ext2_get_acl,
         .set_acl        = ext2_set_acl,
@@ -426,6 +427,7 @@ const struct inode_operations ext2_special_inode_operations = {
 #ifdef CONFIG_EXT2_FS_XATTR
         .listxattr      = ext2_listxattr,
 #endif
+        .getattr        = ext2_getattr,
         .setattr        = ext2_setattr,
         .get_acl        = ext2_get_acl,
         .set_acl        = ext2_set_acl,
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index d5589ddcc281..00cdb8679486 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -23,6 +23,7 @@
 
 const struct inode_operations ext2_symlink_inode_operations = {
         .get_link       = page_get_link,
+        .getattr        = ext2_getattr,
         .setattr        = ext2_setattr,
 #ifdef CONFIG_EXT2_FS_XATTR
         .listxattr      = ext2_listxattr,
@@ -31,6 +32,7 @@ const struct inode_operations ext2_symlink_inode_operations = {
  
 const struct inode_operations ext2_fast_symlink_inode_operations = {
         .get_link       = simple_get_link,
+        .getattr        = ext2_getattr,
         .setattr        = ext2_setattr,
 #ifdef CONFIG_EXT2_FS_XATTR
         .listxattr      = ext2_listxattr,