diff options
Diffstat (limited to 'bin/gensquashfs/src/dirscan_xattr.c')
| -rw-r--r-- | bin/gensquashfs/src/dirscan_xattr.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/bin/gensquashfs/src/dirscan_xattr.c b/bin/gensquashfs/src/dirscan_xattr.c deleted file mode 100644 index 1bc829f..0000000 --- a/bin/gensquashfs/src/dirscan_xattr.c +++ /dev/null @@ -1,220 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * dirscan_xattr.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#include "mkfs.h" - -#ifdef HAVE_SYS_XATTR_H -static char *get_full_path(const char *prefix, tree_node_t *node) -{ - char *path = NULL, *new = NULL; - size_t path_len, prefix_len; - int ret; - - path = fstree_get_path(node); - if (path == NULL) - goto fail; - - ret = canonicalize_name(path); - assert(ret == 0); - - path_len = strlen(path); - prefix_len = strlen(prefix); - - while (prefix_len > 0 && prefix[prefix_len - 1] == '/') - --prefix_len; - - if (prefix_len > 0) { - new = realloc(path, path_len + prefix_len + 2); - if (new == NULL) - goto fail; - - path = new; - - memmove(path + prefix_len + 1, path, path_len + 1); - memcpy(path, prefix, prefix_len); - path[prefix_len] = '/'; - } - - return path; -fail: - perror("getting full path for xattr scan"); - free(path); - return NULL; -} - -static int xattr_from_path(sqfs_xattr_writer_t *xwr, const char *path) -{ - char *key, *value = NULL, *buffer = NULL; - ssize_t buflen, vallen, keylen; - int ret; - - buflen = llistxattr(path, NULL, 0); - if (buflen < 0) { - fprintf(stderr, "llistxattr %s: %s", path, strerror(errno)); - return -1; - } - - if (buflen == 0) - return 0; - - buffer = malloc(buflen); - if (buffer == NULL) { - perror("xattr name buffer"); - return -1; - } - - buflen = llistxattr(path, buffer, buflen); - if (buflen == -1) { - fprintf(stderr, "llistxattr %s: %s", path, strerror(errno)); - goto fail; - } - - key = buffer; - while (buflen > 0) { - vallen = lgetxattr(path, key, NULL, 0); - if (vallen == -1) { - fprintf(stderr, "lgetxattr %s: %s", - path, strerror(errno)); - goto fail; - } - - if (vallen > 0) { - value = calloc(1, vallen); - if (value == NULL) { - perror("allocating xattr value buffer"); - goto fail; - } - - vallen = lgetxattr(path, key, value, vallen); - if (vallen == -1) { - fprintf(stderr, "lgetxattr %s: %s\n", - path, strerror(errno)); - goto fail; - } - - ret = sqfs_xattr_writer_add_kv(xwr, key, value, vallen); - if (ret) { - sqfs_perror(path, - "storing xattr key-value pairs", - ret); - goto fail; - } - - free(value); - value = NULL; - } - - keylen = strlen(key) + 1; - buflen -= keylen; - key += keylen; - } - - free(buffer); - return 0; -fail: - free(value); - free(buffer); - return -1; -} -#endif - -static int xattr_xcan_dfs(const char *path_prefix, void *selinux_handle, - sqfs_xattr_writer_t *xwr, bool scan_xattr, void *xattr_map, - tree_node_t *node) -{ - char *path = NULL; - int ret; - - ret = sqfs_xattr_writer_begin(xwr, 0); - if (ret) { - sqfs_perror(node->name, "recoding xattr key-value pairs\n", - ret); - return -1; - } - -#ifdef HAVE_SYS_XATTR_H - if (scan_xattr) { - path = get_full_path(path_prefix, node); - if (path == NULL) - return -1; - - ret = xattr_from_path(xwr, path); - free(path); - path = NULL; - if (ret) { - ret = -1; - goto out; - } - } -#else - (void)path_prefix; -#endif - - if (selinux_handle != NULL || xattr_map != NULL) { - path = fstree_get_path(node); - - if (path == NULL) { - perror("reconstructing absolute path"); - ret = -1; - goto out; - } - } - - if (xattr_map != NULL) { - ret = xattr_apply_map_file(path, xattr_map, xwr); - - if (ret) { - ret = -1; - goto out; - } - } - - if (selinux_handle != NULL) { - ret = selinux_relable_node(selinux_handle, xwr, node, path); - - if (ret) { - ret = -1; - goto out; - } - } - - if (sqfs_xattr_writer_end(xwr, &node->xattr_idx)) { - sqfs_perror(node->name, "completing xattr key-value pairs", - ret); - ret = -1; - goto out; - } - - if (S_ISDIR(node->mode)) { - node = node->data.children; - - while (node != NULL) { - if (xattr_xcan_dfs(path_prefix, selinux_handle, xwr, - scan_xattr, xattr_map, node)) { - ret = -1; - goto out; - } - - node = node->next; - } - } - -out: - free(path); - return ret; -} - -int xattrs_from_dir(fstree_t *fs, const char *path, void *selinux_handle, - void *xattr_map, sqfs_xattr_writer_t *xwr, bool scan_xattr) -{ - if (xwr == NULL) - return 0; - - if (selinux_handle == NULL && !scan_xattr && xattr_map == NULL) - return 0; - - return xattr_xcan_dfs(path, selinux_handle, xwr, scan_xattr, xattr_map, fs->root); -} |