return r;
}
-int ext4_fsetxattr(ext4_file *file,
- char *name,
- size_t name_len,
- void *data,
- size_t data_size,
- bool replace)
+int ext4_setxattr(const char *path, const char *name, size_t name_len,
+ const void *data, size_t data_size, bool replace)
{
- return EOK;
+ int r = EOK;
+ ext4_file f;
+ uint32_t inode;
+ uint8_t name_index;
+ const char *dissected_name = NULL;
+ size_t dissected_len = 0;
+ struct ext4_xattr_ref xattr_ref;
+ struct ext4_inode_ref inode_ref;
+ struct ext4_mountpoint *mp = ext4_get_mount(path);
+ if (!mp)
+ return ENOENT;
+
+ dissected_name = ext4_extract_xattr_name(name, name_len,
+ &name_index, &dissected_len);
+ if (!dissected_len)
+ return EINVAL;
+
+ EXT4_MP_LOCK(mp);
+ r = ext4_generic_open2(&f, path, O_RDWR,
+ EXT4_DIRENTRY_UNKNOWN, 0, 0);
+ if (r != EOK)
+ goto Finish;
+ inode = f.inode;
+ ext4_fclose(&f);
+
+ r = ext4_fs_get_inode_ref(&mp->fs, inode, &inode_ref);
+ if (r != EOK)
+ goto Finish;
+
+ r = ext4_fs_get_xattr_ref(&mp->fs, &inode_ref,
+ &xattr_ref);
+ if (r != EOK) {
+ ext4_fs_put_inode_ref(&inode_ref);
+ goto Finish;
+ }
+
+ r = ext4_fs_set_xattr(&xattr_ref, name_index, dissected_name,
+ dissected_len, data, data_size, replace);
+
+ ext4_fs_put_xattr_ref(&xattr_ref);
+ ext4_fs_put_inode_ref(&inode_ref);
+Finish:
+ EXT4_MP_UNLOCK(mp);
+ return r;
+}
+
+int ext4_getxattr(const char *path, const char *name, size_t name_len,
+ void *buf, size_t buf_size, size_t *data_size)
+{
+ int r = EOK;
+ ext4_file f;
+ uint32_t inode;
+ uint8_t name_index;
+ const char *dissected_name = NULL;
+ size_t dissected_len = 0;
+ struct ext4_xattr_ref xattr_ref;
+ struct ext4_inode_ref inode_ref;
+ struct ext4_mountpoint *mp = ext4_get_mount(path);
+ if (!mp)
+ return ENOENT;
+
+ dissected_name = ext4_extract_xattr_name(name, name_len,
+ &name_index, &dissected_len);
+ if (!dissected_len)
+ return EINVAL;
+
+ EXT4_MP_LOCK(mp);
+ r = ext4_generic_open2(&f, path, O_RDWR,
+ EXT4_DIRENTRY_UNKNOWN, 0, 0);
+ if (r != EOK)
+ goto Finish;
+ inode = f.inode;
+ ext4_fclose(&f);
+
+ r = ext4_fs_get_inode_ref(&mp->fs, inode, &inode_ref);
+ if (r != EOK)
+ goto Finish;
+
+ r = ext4_fs_get_xattr_ref(&mp->fs, &inode_ref,
+ &xattr_ref);
+ if (r != EOK) {
+ ext4_fs_put_inode_ref(&inode_ref);
+ goto Finish;
+ }
+
+ r = ext4_fs_get_xattr(&xattr_ref, name_index,
+ dissected_name, dissected_len,
+ buf, buf_size, data_size);
+
+ ext4_fs_put_xattr_ref(&xattr_ref);
+ ext4_fs_put_inode_ref(&inode_ref);
+Finish:
+ EXT4_MP_UNLOCK(mp);
+ return r;
+}
+
+struct ext4_listxattr_iterator {
+ char *list;
+ char *list_ptr;
+ size_t size;
+ size_t ret_size;
+ bool list_too_small;
+ bool get_required_size;
+};
+
+static int ext4_iterate_ea_list(struct ext4_xattr_ref *ref,
+ struct ext4_xattr_item *item)
+{
+ struct ext4_listxattr_iterator *lxi;
+ lxi = ref->iter_arg;
+ if (!lxi->get_required_size) {
+ size_t prefix_len;
+ const char *prefix;
+ prefix = ext4_get_xattr_name_prefix(item->name_index,
+ &prefix_len);
+ if (lxi->ret_size +
+ prefix_len + item->name_len + 1 >
+ lxi->size) {
+
+ lxi->list_too_small = 1;
+ return EXT4_XATTR_ITERATE_STOP;
+ }
+ if (prefix) {
+ memcpy(lxi->list_ptr, prefix, prefix_len);
+ lxi->list_ptr += prefix_len;
+ lxi->ret_size += prefix_len;
+ }
+ memcpy(lxi->list_ptr, item->name, item->name_len);
+ lxi->list_ptr[item->name_len] = 0;
+ lxi->list_ptr += item->name_len + 1;
+ }
+ lxi->ret_size += item->name_len + 1;
+ return EXT4_XATTR_ITERATE_CONT;
+}
+
+int ext4_listxattr(const char *path, char *list, size_t size, size_t *ret_size)
+{
+ int r = EOK;
+ ext4_file f;
+ uint32_t inode;
+ struct ext4_xattr_ref xattr_ref;
+ struct ext4_inode_ref inode_ref;
+ struct ext4_listxattr_iterator lxi;
+ struct ext4_mountpoint *mp = ext4_get_mount(path);
+ if (!mp)
+ return ENOENT;
+
+ lxi.list = list;
+ lxi.list_ptr = list;
+ lxi.size = size;
+ lxi.ret_size = 0;
+ lxi.list_too_small = false;
+ lxi.get_required_size = (!size) ? true : false;
+
+ EXT4_MP_LOCK(mp);
+ r = ext4_generic_open2(&f, path, O_RDWR,
+ EXT4_DIRENTRY_UNKNOWN, 0, 0);
+ if (r != EOK)
+ goto Finish;
+ inode = f.inode;
+ ext4_fclose(&f);
+
+ r = ext4_fs_get_inode_ref(&mp->fs, inode, &inode_ref);
+ if (r != EOK)
+ goto Finish;
+
+ r = ext4_fs_get_xattr_ref(&mp->fs, &inode_ref,
+ &xattr_ref);
+ if (r != EOK) {
+ ext4_fs_put_inode_ref(&inode_ref);
+ goto Finish;
+ }
+
+ xattr_ref.iter_arg = &lxi;
+ ext4_fs_xattr_iterate(&xattr_ref, ext4_iterate_ea_list);
+ if (lxi.list_too_small)
+ r = ERANGE;
+
+ if (r == EOK) {
+ if (ret_size)
+ *ret_size = lxi.ret_size;
+
+ }
+ ext4_fs_put_xattr_ref(&xattr_ref);
+ ext4_fs_put_inode_ref(&inode_ref);
+Finish:
+ EXT4_MP_UNLOCK(mp);
+ return r;
+
+}
+
+int ext4_removexattr(const char *path, const char *name, size_t name_len)
+{
+ int r = EOK;
+ ext4_file f;
+ uint32_t inode;
+ uint8_t name_index;
+ const char *dissected_name = NULL;
+ size_t dissected_len = 0;
+ struct ext4_xattr_ref xattr_ref;
+ struct ext4_inode_ref inode_ref;
+ struct ext4_mountpoint *mp = ext4_get_mount(path);
+ if (!mp)
+ return ENOENT;
+
+ dissected_name = ext4_extract_xattr_name(name, name_len,
+ &name_index, &dissected_len);
+ if (!dissected_len)
+ return EINVAL;
+
+ EXT4_MP_LOCK(mp);
+ r = ext4_generic_open2(&f, path, O_RDWR,
+ EXT4_DIRENTRY_UNKNOWN, 0, 0);
+ if (r != EOK)
+ goto Finish;
+ inode = f.inode;
+ ext4_fclose(&f);
+
+ r = ext4_fs_get_inode_ref(&mp->fs, inode, &inode_ref);
+ if (r != EOK)
+ goto Finish;
+
+ r = ext4_fs_get_xattr_ref(&mp->fs, &inode_ref,
+ &xattr_ref);
+ if (r != EOK) {
+ ext4_fs_put_inode_ref(&inode_ref);
+ goto Finish;
+ }
+
+ r = ext4_fs_remove_xattr(&xattr_ref, name_index, dissected_name,
+ dissected_len);
+
+ ext4_fs_put_xattr_ref(&xattr_ref);
+ ext4_fs_put_inode_ref(&inode_ref);
+Finish:
+ EXT4_MP_UNLOCK(mp);
+ return r;
+
}
/*********************************DIRECTORY OPERATION************************/
projects / lwext4.git / blobdiff