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-rw-r--r--mkfs/dirscan.c321
1 files changed, 0 insertions, 321 deletions
diff --git a/mkfs/dirscan.c b/mkfs/dirscan.c
deleted file mode 100644
index dbc862c..0000000
--- a/mkfs/dirscan.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * fstree_from_dir.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(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
-
-#ifdef _WIN32
-int fstree_from_dir(fstree_t *fs, const char *path, void *selinux_handle,
- sqfs_xattr_writer_t *xwr, unsigned int flags)
-{
- (void)fs; (void)path; (void)selinux_handle; (void)xwr; (void)flags;
- fputs("Packing a directory is not supported on Windows.\n", stderr);
- return -1;
-}
-#else
-static int xattr_xcan_dfs(const char *path_prefix, void *selinux_handle,
- sqfs_xattr_writer_t *xwr, unsigned int flags,
- tree_node_t *node)
-{
- char *path;
- int ret;
-
- ret = sqfs_xattr_writer_begin(xwr);
- if (ret) {
- sqfs_perror(node->name, "recoding xattr key-value pairs\n",
- ret);
- return -1;
- }
-
-#ifdef HAVE_SYS_XATTR_H
- if (flags & DIR_SCAN_READ_XATTR) {
- path = get_full_path(path_prefix, node);
- if (path == NULL)
- return -1;
-
- ret = xattr_from_path(xwr, path);
- free(path);
-
- if (ret)
- return -1;
- }
-#else
- (void)path_prefix;
-#endif
-
- if (selinux_handle != NULL) {
- path = fstree_get_path(node);
- if (path == NULL) {
- perror("reconstructing absolute path");
- return -1;
- }
-
- ret = selinux_relable_node(selinux_handle, xwr, node, path);
- free(path);
-
- if (ret)
- return -1;
- }
-
- if (sqfs_xattr_writer_end(xwr, &node->xattr_idx)) {
- sqfs_perror(node->name, "completing xattr key-value pairs",
- ret);
- return -1;
- }
-
- if (S_ISDIR(node->mode)) {
- node = node->data.dir.children;
-
- while (node != NULL) {
- if (xattr_xcan_dfs(path_prefix, selinux_handle, xwr,
- flags, node)) {
- return -1;
- }
-
- node = node->next;
- }
- }
-
- return 0;
-}
-
-static int populate_dir(int dir_fd, fstree_t *fs, tree_node_t *root,
- dev_t devstart, unsigned int flags)
-{
- char *extra = NULL;
- struct dirent *ent;
- struct stat sb;
- tree_node_t *n;
- int childfd;
- DIR *dir;
-
- dir = fdopendir(dir_fd);
- if (dir == NULL) {
- perror("fdopendir");
- close(dir_fd);
- return -1;
- }
-
- /* XXX: fdopendir can dup and close dir_fd internally
- and still be compliant with the spec. */
- dir_fd = dirfd(dir);
-
- for (;;) {
- errno = 0;
- ent = readdir(dir);
-
- if (ent == NULL) {
- if (errno) {
- perror("readdir");
- goto fail;
- }
- break;
- }
-
- if (!strcmp(ent->d_name, "..") || !strcmp(ent->d_name, "."))
- continue;
-
- if (fstatat(dir_fd, ent->d_name, &sb, AT_SYMLINK_NOFOLLOW)) {
- perror(ent->d_name);
- goto fail;
- }
-
- if ((flags & DIR_SCAN_ONE_FILESYSTEM) && sb.st_dev != devstart)
- continue;
-
- if (S_ISLNK(sb.st_mode)) {
- extra = calloc(1, sb.st_size + 1);
- if (extra == NULL)
- goto fail_rdlink;
-
- if (readlinkat(dir_fd, ent->d_name,
- extra, sb.st_size) < 0) {
- goto fail_rdlink;
- }
-
- extra[sb.st_size] = '\0';
- }
-
- if (!(flags & DIR_SCAN_KEEP_TIME))
- sb.st_mtime = fs->defaults.st_mtime;
-
- n = fstree_mknode(root, ent->d_name, strlen(ent->d_name),
- extra, &sb);
- if (n == NULL) {
- perror("creating tree node");
- goto fail;
- }
-
- free(extra);
- extra = NULL;
-
- if (S_ISDIR(n->mode)) {
- childfd = openat(dir_fd, n->name, O_DIRECTORY |
- O_RDONLY | O_CLOEXEC);
- if (childfd < 0) {
- perror(n->name);
- goto fail;
- }
-
- if (populate_dir(childfd, fs, n, devstart, flags))
- goto fail;
- }
- }
-
- closedir(dir);
- return 0;
-fail_rdlink:
- perror("readlink");
-fail:
- closedir(dir);
- free(extra);
- return -1;
-}
-
-int fstree_from_dir(fstree_t *fs, const char *path, void *selinux_handle,
- sqfs_xattr_writer_t *xwr, unsigned int flags)
-{
- struct stat sb;
- int fd;
-
- fd = open(path, O_DIRECTORY | O_RDONLY | O_CLOEXEC);
- if (fd < 0) {
- perror(path);
- return -1;
- }
-
- if (fstat(fd, &sb)) {
- perror(path);
- close(fd);
- return -1;
- }
-
- if (populate_dir(fd, fs, fs->root, sb.st_dev, flags))
- return -1;
-
- if (xwr != NULL && (selinux_handle != NULL ||
- (flags & DIR_SCAN_READ_XATTR))) {
- if (xattr_xcan_dfs(path, selinux_handle, xwr, flags, fs->root))
- return -1;
- }
-
- return 0;
-}
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 08:18:41 +0000