diff options
Diffstat (limited to 'bin/sqfs2tar/src/write_tree.c')
| -rw-r--r-- | bin/sqfs2tar/src/write_tree.c | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/bin/sqfs2tar/src/write_tree.c b/bin/sqfs2tar/src/write_tree.c deleted file mode 100644 index ed82173..0000000 --- a/bin/sqfs2tar/src/write_tree.c +++ /dev/null @@ -1,236 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * write_tree.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#include "sqfs2tar.h" - -static sqfs_hard_link_t *links = NULL; -static unsigned int record_counter; - -static sqfs_hard_link_t *find_hard_link(const char *name, sqfs_u32 inum) -{ - sqfs_hard_link_t *lnk = NULL; - - for (lnk = links; lnk != NULL; lnk = lnk->next) { - if (lnk->inode_number == inum) { - if (strcmp(name, lnk->target) == 0) - lnk = NULL; - break; - } - } - - return lnk; -} - -static void inode_stat(const sqfs_tree_node_t *node, struct stat *sb) -{ - memset(sb, 0, sizeof(*sb)); - - sb->st_mode = node->inode->base.mode; - sb->st_uid = node->uid; - sb->st_gid = node->gid; - sb->st_mtime = node->inode->base.mod_time; - - switch (node->inode->base.type) { - case SQFS_INODE_BDEV: - case SQFS_INODE_CDEV: - sb->st_rdev = node->inode->data.dev.devno; - break; - case SQFS_INODE_EXT_BDEV: - case SQFS_INODE_EXT_CDEV: - sb->st_rdev = node->inode->data.dev_ext.devno; - break; - case SQFS_INODE_SLINK: - sb->st_size = node->inode->data.slink.target_size; - break; - case SQFS_INODE_EXT_SLINK: - sb->st_size = node->inode->data.slink_ext.target_size; - break; - case SQFS_INODE_FILE: - sb->st_size = node->inode->data.file.file_size; - break; - case SQFS_INODE_EXT_FILE: - sb->st_size = node->inode->data.file_ext.file_size; - break; - case SQFS_INODE_DIR: - sb->st_size = node->inode->data.dir.size; - break; - case SQFS_INODE_EXT_DIR: - sb->st_size = node->inode->data.dir_ext.size; - break; - default: - break; - } -} - -static int write_tree_dfs(const sqfs_tree_node_t *n) -{ - sqfs_hard_link_t *lnk = NULL; - sqfs_xattr_t *xattr = NULL; - char *name, *target; - struct stat sb; - size_t len; - int ret; - - inode_stat(n, &sb); - - if (n->parent == NULL) { - if (root_becomes == NULL) - goto skip_hdr; - - len = strlen(root_becomes); - name = malloc(len + 2); - if (name == NULL) { - perror("creating root directory"); - return -1; - } - - memcpy(name, root_becomes, len); - name[len] = '/'; - name[len + 1] = '\0'; - } else { - if (!is_filename_sane((const char *)n->name, false)) { - fprintf(stderr, "Found a file named '%s', skipping.\n", - n->name); - if (dont_skip) { - fputs("Not allowed to skip files, aborting!\n", - stderr); - return -1; - } - return 0; - } - - ret = sqfs_tree_node_get_path(n, &name); - if (ret != 0) { - sqfs_perror(NULL, "resolving tree node path", ret); - return -1; - } - - if (canonicalize_name(name)) - goto out_skip; - - name = assemble_tar_path(name, S_ISDIR(sb.st_mode)); - if (name == NULL) - return -1; - - lnk = find_hard_link(name, n->inode->base.inode_number); - if (lnk != NULL) { - ret = write_hard_link(out_file, &sb, name, lnk->target, - record_counter++); - if (ret != 0) - sqfs_perror(name, "writing hard link", ret); - sqfs_free(name); - return ret; - } - } - - if (!no_xattr && xr != NULL) { - sqfs_u32 index; - int ret; - - sqfs_inode_get_xattr_index(n->inode, &index); - - ret = sqfs_xattr_reader_read_all(xr, index, &xattr); - if (ret) { - sqfs_perror(name, "resolving xattr index", ret); - sqfs_free(name); - return -1; - } - } - - target = S_ISLNK(sb.st_mode) ? (char *)n->inode->extra : NULL; - ret = write_tar_header(out_file, &sb, name, target, xattr, - record_counter++); - sqfs_xattr_list_free(xattr); - - if (ret == SQFS_ERROR_UNSUPPORTED) { - fprintf(stderr, "WARNING: %s: unsupported file type\n", name); - goto out_skip; - } - - if (ret < 0) { - sqfs_perror(name, "writing tar header", ret); - sqfs_free(name); - return -1; - } - - if (S_ISREG(sb.st_mode)) { - sqfs_istream_t *in; - int ret; - - ret = sqfs_data_reader_create_stream(data, n->inode, name, &in); - if (ret) { - sqfs_perror(name, NULL, ret); - sqfs_free(name); - return -1; - } - - do { - ret = sqfs_istream_splice(in, out_file, - super.block_size); - } while (ret > 0); - - sqfs_drop(in); - - if (ret == 0) - ret = padd_file(out_file, sb.st_size); - - if (ret) { - sqfs_perror(name, NULL, ret); - sqfs_free(name); - return -1; - } - } - - sqfs_free(name); -skip_hdr: - for (n = n->children; n != NULL; n = n->next) { - if (write_tree_dfs(n)) - return -1; - } - return 0; -out_skip: - if (dont_skip) { - fputs("Not allowed to skip files, aborting!\n", stderr); - ret = -1; - } else { - fprintf(stderr, "Skipping %s\n", name); - ret = 0; - } - sqfs_free(name); - return ret; -} - -int write_tree(const sqfs_tree_node_t *n) -{ - sqfs_hard_link_t *lnk; - int status = -1; - - if (!no_links) { - int ret = sqfs_tree_find_hard_links(n, &links); - if (ret) { - sqfs_perror(NULL, "detecting hard links in " - "file system tree", ret); - return -1; - } - - for (lnk = links; lnk != NULL; lnk = lnk->next) { - lnk->target = assemble_tar_path(lnk->target, false); - - if (lnk->target == NULL) - goto out_links; - } - } - - status = write_tree_dfs(n); -out_links: - while (links != NULL) { - lnk = links; - links = links->next; - sqfs_free(lnk->target); - free(lnk); - } - return status; -} |