1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Squashfs - a compressed read only filesystem for Linux
30 	struct super_block *sb = inode->i_sb;  in squashfs_listxattr()
31 	struct squashfs_sb_info *msblk = sb->s_fs_info;  in squashfs_listxattr()
32 	u64 start = SQUASHFS_XATTR_BLK(squashfs_i(inode)->xattr)  in squashfs_listxattr()
33 						 + msblk->xattr_table;  in squashfs_listxattr()
34 	int offset = SQUASHFS_XATTR_OFFSET(squashfs_i(inode)->xattr);  in squashfs_listxattr()
35 	int count = squashfs_i(inode)->xattr_count;  in squashfs_listxattr()
40 	if (msblk->xattr_id_table == NULL)  in squashfs_listxattr()
41 		return -EOPNOTSUPP;  in squashfs_listxattr()
43 	/* loop reading each xattr name */  in squashfs_listxattr()
44 	while (count--) {  in squashfs_listxattr()
57 		if (handler && (!handler->list || handler->list(d))) {  in squashfs_listxattr()
58 			const char *prefix = handler->prefix ?: handler->name;  in squashfs_listxattr()  local
59 			size_t prefix_size = strlen(prefix);  in squashfs_listxattr()
63 					err = -ERANGE;  in squashfs_listxattr()
66 				memcpy(buffer, prefix, prefix_size);  in squashfs_listxattr()
77 			rest -= prefix_size + name_size + 1;  in squashfs_listxattr()
98 	err = buffer_size - rest;  in squashfs_listxattr()
106 	const char *name, void *buffer, size_t buffer_size)  in squashfs_xattr_get()  argument
108 	struct super_block *sb = inode->i_sb;  in squashfs_xattr_get()
109 	struct squashfs_sb_info *msblk = sb->s_fs_info;  in squashfs_xattr_get()
110 	u64 start = SQUASHFS_XATTR_BLK(squashfs_i(inode)->xattr)  in squashfs_xattr_get()
111 						 + msblk->xattr_table;  in squashfs_xattr_get()
112 	int offset = SQUASHFS_XATTR_OFFSET(squashfs_i(inode)->xattr);  in squashfs_xattr_get()
113 	int count = squashfs_i(inode)->xattr_count;  in squashfs_xattr_get()
114 	int name_len = strlen(name);  in squashfs_xattr_get()
119 		return  -ENOMEM;  in squashfs_xattr_get()
121 	/* loop reading each xattr name */  in squashfs_xattr_get()
122 	for (; count; count--) {  in squashfs_xattr_get()
125 		int type, prefix, name_size;  in squashfs_xattr_get()  local
134 		prefix = type & SQUASHFS_XATTR_PREFIX_MASK;  in squashfs_xattr_get()
136 		if (prefix == name_index && name_size == name_len)  in squashfs_xattr_get()
145 		if (prefix == name_index && name_size == name_len &&  in squashfs_xattr_get()
146 					strncmp(target, name, name_size) == 0) {  in squashfs_xattr_get()
162 							msblk->xattr_table;  in squashfs_xattr_get()
174 					err = -ERANGE;  in squashfs_xattr_get()
195 	err = count ? vsize : -ENODATA;  in squashfs_xattr_get()
206 				      const char *name,  in squashfs_xattr_handler_get()  argument
209 	return squashfs_xattr_get(inode, handler->flags, name,  in squashfs_xattr_handler_get()
217 	.prefix	= XATTR_USER_PREFIX,
231 	.prefix	= XATTR_TRUSTED_PREFIX,
241 	.prefix	= XATTR_SECURITY_PREFIX,