Cleanup directory structure of the binary programs

Instead of having the binary programs in randomly named subdirectories,
move all of them to a "bin" subdirectory, similar to the utility
libraries that have subdirectories within "lib" and give the
subdirectories the propper names (e.g. have gensquashfs source in a
directory *actually* named "gensquashfs").

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

3 files changed, 0 insertions, 1244 deletions

diff --git a/tar/Makemodule.am b/tar/Makemodule.am
deleted file mode 100644
index e065ef7..0000000
--- a/tar/Makemodule.am
+++ /dev/null
@@ -1,12 +0,0 @@
-sqfs2tar_SOURCES = tar/sqfs2tar.c
-sqfs2tar_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS)
-sqfs2tar_LDADD = libcommon.a libutil.a libsquashfs.la libtar.a libcompat.a
-sqfs2tar_LDADD += libfstree.a $(LZO_LIBS) $(PTHREAD_LIBS)
-
-tar2sqfs_SOURCES = tar/tar2sqfs.c
-tar2sqfs_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS)
-tar2sqfs_LDADD = libcommon.a libsquashfs.la libtar.a
-tar2sqfs_LDADD += libfstree.a libcompat.a libfstree.a $(LZO_LIBS)
-tar2sqfs_LDADD += $(PTHREAD_LIBS)
-
-bin_PROGRAMS += sqfs2tar tar2sqfs
diff --git a/tar/sqfs2tar.c b/tar/sqfs2tar.c
deleted file mode 100644
index 6d2a51a..0000000
--- a/tar/sqfs2tar.c
+++ /dev/null
@@ -1,688 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * sqfs2tar.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "common.h"
-#include "tar.h"
-
-#include <getopt.h>
-#include <string.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-
-static struct option long_opts[] = {
-	{ "subdir", required_argument, NULL, 'd' },
-	{ "keep-as-dir", no_argument, NULL, 'k' },
-	{ "root-becomes", required_argument, NULL, 'r' },
-	{ "no-skip", no_argument, NULL, 's' },
-	{ "no-xattr", no_argument, NULL, 'X' },
-	{ "no-hard-links", no_argument, NULL, 'L' },
-	{ "help", no_argument, NULL, 'h' },
-	{ "version", no_argument, NULL, 'V' },
-	{ NULL, 0, NULL, 0 },
-};
-
-static const char *short_opts = "d:kr:sXLhV";
-
-static const char *usagestr =
-"Usage: sqfs2tar [OPTIONS...] <sqfsfile>\n"
-"\n"
-"Read an input squashfs archive and turn it into a tar archive, written\n"
-"to stdout.\n"
-"\n"
-"Possible options:\n"
-"\n"
-"  --subdir, -d <dir>        Unpack the given sub directory instead of the\n"
-"                            filesystem root. Can be specified more than\n"
-"                            once to select multiple directories. If only\n"
-"                            one is specified, it becomes the new root of\n"
-"                            node of the archive file system tree.\n"
-"\n"
-"  --root-becomes, -r <dir>  Turn the root inode into a directory with the\n"
-"                            specified name. Everything else will be stored\n"
-"                            inside this directory. The special value '.' is\n"
-"                            allowed to prefix all tar paths with './' and\n"
-"                            add an entry named '.' for the root inode.\n"
-"                            If this option isn't used, all meta data stored\n"
-"                            in the root inode IS LOST!\n"
-"\n"
-"  --keep-as-dir, -k         If --subdir is used only once, don't make the\n"
-"                            subdir the archive root, instead keep it as\n"
-"                            prefix for all unpacked files.\n"
-"                            Using --subdir more than once implies\n"
-"                            --keep-as-dir.\n"
-"  --no-xattr, -X            Do not copy extended attributes.\n"
-"  --no-hard-links, -L       Do not generate hard links. Produce duplicate\n"
-"                            entries instead.\n"
-"\n"
-"  --no-skip, -s             Abort if a file cannot be stored in a tar\n"
-"                            archive. By default, it is simply skipped\n"
-"                            and a warning is written to stderr.\n"
-"\n"
-"  --help, -h                Print help text and exit.\n"
-"  --version, -V             Print version information and exit.\n"
-"\n"
-"Examples:\n"
-"\n"
-"\tsqfs2tar rootfs.sqfs > rootfs.tar\n"
-"\tsqfs2tar rootfs.sqfs | gzip > rootfs.tar.gz\n"
-"\tsqfs2tar rootfs.sqfs | xz > rootfs.tar.xz\n"
-"\n";
-
-static const char *filename;
-static unsigned int record_counter;
-static bool dont_skip = false;
-static bool keep_as_dir = false;
-static bool no_xattr = false;
-static bool no_links = false;
-
-static char *root_becomes = NULL;
-static char **subdirs = NULL;
-static size_t num_subdirs = 0;
-static size_t max_subdirs = 0;
-
-static sqfs_xattr_reader_t *xr;
-static sqfs_data_reader_t *data;
-static sqfs_file_t *file;
-static sqfs_super_t super;
-static sqfs_hard_link_t *links = NULL;
-
-static FILE *out_file = NULL;
-
-static void process_args(int argc, char **argv)
-{
-	size_t idx, new_count;
-	int i, ret;
-	void *new;
-
-	for (;;) {
-		i = getopt_long(argc, argv, short_opts, long_opts, NULL);
-		if (i == -1)
-			break;
-
-		switch (i) {
-		case 'd':
-			if (num_subdirs == max_subdirs) {
-				new_count = max_subdirs ? max_subdirs * 2 : 16;
-				new = realloc(subdirs,
-					      new_count * sizeof(subdirs[0]));
-				if (new == NULL)
-					goto fail_errno;
-
-				max_subdirs = new_count;
-				subdirs = new;
-			}
-
-			subdirs[num_subdirs] = strdup(optarg);
-			if (subdirs[num_subdirs] == NULL)
-				goto fail_errno;
-
-			if (canonicalize_name(subdirs[num_subdirs])) {
-				perror(optarg);
-				goto fail;
-			}
-
-			++num_subdirs;
-			break;
-		case 'r':
-			free(root_becomes);
-			root_becomes = strdup(optarg);
-			if (root_becomes == NULL)
-				goto fail_errno;
-
-			if (strcmp(root_becomes, "./") == 0)
-				root_becomes[1] = '\0';
-
-			if (strcmp(root_becomes, ".") == 0)
-				break;
-
-			if (canonicalize_name(root_becomes) != 0 ||
-			    strlen(root_becomes) == 0) {
-				fprintf(stderr,
-					"Invalid root directory '%s'.\n",
-					optarg);
-				goto fail_arg;
-			}
-			break;
-		case 'k':
-			keep_as_dir = true;
-			break;
-		case 's':
-			dont_skip = true;
-			break;
-		case 'X':
-			no_xattr = true;
-			break;
-		case 'L':
-			no_links = true;
-			break;
-		case 'h':
-			fputs(usagestr, stdout);
-			goto out_success;
-		case 'V':
-			print_version("sqfs2tar");
-			goto out_success;
-		default:
-			goto fail_arg;
-		}
-	}
-
-	if (optind >= argc) {
-		fputs("Missing argument: squashfs image\n", stderr);
-		goto fail_arg;
-	}
-
-	filename = argv[optind++];
-
-	if (optind < argc) {
-		fputs("Unknown extra arguments\n", stderr);
-		goto fail_arg;
-	}
-
-	if (num_subdirs > 1)
-		keep_as_dir = true;
-
-	return;
-fail_errno:
-	perror("parsing options");
-	goto fail;
-fail_arg:
-	fputs("Try `sqfs2tar --help' for more information.\n", stderr);
-	goto fail;
-fail:
-	ret = EXIT_FAILURE;
-	goto out_exit;
-out_success:
-	ret = EXIT_SUCCESS;
-	goto out_exit;
-out_exit:
-	for (idx = 0; idx < num_subdirs; ++idx)
-		free(subdirs[idx]);
-	free(root_becomes);
-	free(subdirs);
-	exit(ret);
-}
-
-static int terminate_archive(void)
-{
-	char buffer[1024];
-
-	memset(buffer, '\0', sizeof(buffer));
-
-	return write_retry("adding archive terminator", out_file,
-			   buffer, sizeof(buffer));
-}
-
-static int get_xattrs(const char *name, const sqfs_inode_generic_t *inode,
-		      tar_xattr_t **out)
-{
-	tar_xattr_t *list = NULL, *ent;
-	sqfs_xattr_value_t *value;
-	sqfs_xattr_entry_t *key;
-	sqfs_xattr_id_t desc;
-	sqfs_u32 index;
-	size_t i;
-	int ret;
-
-	if (xr == NULL)
-		return 0;
-
-	sqfs_inode_get_xattr_index(inode, &index);
-
-	if (index == 0xFFFFFFFF)
-		return 0;
-
-	ret = sqfs_xattr_reader_get_desc(xr, index, &desc);
-	if (ret) {
-		sqfs_perror(name, "resolving xattr index", ret);
-		return -1;
-	}
-
-	ret = sqfs_xattr_reader_seek_kv(xr, &desc);
-	if (ret) {
-		sqfs_perror(name, "locating xattr key-value pairs", ret);
-		return -1;
-	}
-
-	for (i = 0; i < desc.count; ++i) {
-		ret = sqfs_xattr_reader_read_key(xr, &key);
-		if (ret) {
-			sqfs_perror(name, "reading xattr key", ret);
-			goto fail;
-		}
-
-		ret = sqfs_xattr_reader_read_value(xr, key, &value);
-		if (ret) {
-			sqfs_perror(name, "reading xattr value", ret);
-			free(key);
-			goto fail;
-		}
-
-		ent = calloc(1, sizeof(*ent) + strlen((const char *)key->key) +
-			     value->size + 2);
-		if (ent == NULL) {
-			perror("creating xattr entry");
-			free(key);
-			free(value);
-			goto fail;
-		}
-
-		ent->key = ent->data;
-		strcpy(ent->key, (const char *)key->key);
-
-		ent->value = (sqfs_u8 *)ent->key + strlen(ent->key) + 1;
-		memcpy(ent->value, value->value, value->size + 1);
-
-		ent->value_len = value->size;
-		ent->next = list;
-		list = ent;
-
-		free(key);
-		free(value);
-	}
-
-	*out = list;
-	return 0;
-fail:
-	while (list != NULL) {
-		ent = list;
-		list = list->next;
-		free(ent);
-	}
-	return -1;
-}
-
-static char *assemble_tar_path(char *name, bool is_dir)
-{
-	size_t len, new_len;
-	char *temp;
-	(void)is_dir;
-
-	if (root_becomes == NULL && !is_dir)
-		return name;
-
-	new_len = strlen(name);
-	if (root_becomes != NULL)
-		new_len += strlen(root_becomes) + 1;
-	if (is_dir)
-		new_len += 1;
-
-	temp = realloc(name, new_len + 1);
-	if (temp == NULL) {
-		perror("assembling tar entry filename");
-		free(name);
-		return NULL;
-	}
-
-	name = temp;
-
-	if (root_becomes != NULL) {
-		len = strlen(root_becomes);
-
-		memmove(name + len + 1, name, strlen(name) + 1);
-		memcpy(name, root_becomes, len);
-		name[len] = '/';
-	}
-
-	if (is_dir) {
-		len = strlen(name);
-
-		if (len == 0 || name[len - 1] != '/') {
-			name[len++] = '/';
-			name[len] = '\0';
-		}
-	}
-
-	return name;
-}
-
-static int write_tree_dfs(const sqfs_tree_node_t *n)
-{
-	tar_xattr_t *xattr = NULL, *xit;
-	sqfs_hard_link_t *lnk = 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;
-		}
-
-		name = sqfs_tree_node_get_path(n);
-		if (name == NULL) {
-			perror("resolving tree node path");
-			return -1;
-		}
-
-		if (canonicalize_name(name))
-			goto out_skip;
-
-		for (lnk = links; lnk != NULL; lnk = lnk->next) {
-			if (lnk->inode_number == n->inode->base.inode_number) {
-				if (strcmp(name, lnk->target) == 0)
-					lnk = NULL;
-				break;
-			}
-		}
-
-		name = assemble_tar_path(name, S_ISDIR(sb.st_mode));
-		if (name == NULL)
-			return -1;
-	}
-
-	if (lnk != NULL) {
-		ret = write_hard_link(out_file, &sb, name, lnk->target,
-				      record_counter++);
-		free(name);
-		return ret;
-	}
-
-	if (!no_xattr) {
-		if (get_xattrs(name, n->inode, &xattr)) {
-			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++);
-
-	while (xattr != NULL) {
-		xit = xattr;
-		xattr = xattr->next;
-		free(xit);
-	}
-
-	if (ret > 0)
-		goto out_skip;
-
-	if (ret < 0) {
-		free(name);
-		return -1;
-	}
-
-	if (S_ISREG(sb.st_mode)) {
-		if (sqfs_data_reader_dump(name, data, n->inode, out_file,
-					  super.block_size, false)) {
-			free(name);
-			return -1;
-		}
-
-		if (padd_file(out_file, sb.st_size)) {
-			free(name);
-			return -1;
-		}
-	}
-
-	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;
-	}
-	free(name);
-	return ret;
-}
-
-static sqfs_tree_node_t *tree_merge(sqfs_tree_node_t *lhs,
-				    sqfs_tree_node_t *rhs)
-{
-	sqfs_tree_node_t *head = NULL, **next_ptr = &head;
-	sqfs_tree_node_t *it, *l, *r;
-	int diff;
-
-	while (lhs->children != NULL && rhs->children != NULL) {
-		diff = strcmp((const char *)lhs->children->name,
-			      (const char *)rhs->children->name);
-
-		if (diff < 0) {
-			it = lhs->children;
-			lhs->children = lhs->children->next;
-		} else if (diff > 0) {
-			it = rhs->children;
-			rhs->children = rhs->children->next;
-		} else {
-			l = lhs->children;
-			lhs->children = lhs->children->next;
-
-			r = rhs->children;
-			rhs->children = rhs->children->next;
-
-			it = tree_merge(l, r);
-		}
-
-		*next_ptr = it;
-		next_ptr = &it->next;
-	}
-
-	it = (lhs->children != NULL ? lhs->children : rhs->children);
-	*next_ptr = it;
-
-	sqfs_dir_tree_destroy(rhs);
-	lhs->children = head;
-	return lhs;
-}
-
-int main(int argc, char **argv)
-{
-	sqfs_tree_node_t *root = NULL, *subtree;
-	int flags, ret, status = EXIT_FAILURE;
-	sqfs_compressor_config_t cfg;
-	sqfs_compressor_t *cmp;
-	sqfs_id_table_t *idtbl;
-	sqfs_dir_reader_t *dr;
-	sqfs_hard_link_t *lnk;
-	size_t i;
-
-	process_args(argc, argv);
-
-#ifdef _WIN32
-	_setmode(_fileno(stdout), _O_BINARY);
-	out_file = stdout;
-#else
-	out_file = freopen(NULL, "wb", stdout);
-#endif
-
-	if (out_file == NULL) {
-		perror("changing stdout to binary mode");
-		goto out_dirs;
-	}
-
-	file = sqfs_open_file(filename, SQFS_FILE_OPEN_READ_ONLY);
-	if (file == NULL) {
-		perror(filename);
-		goto out_dirs;
-	}
-
-	ret = sqfs_super_read(&super, file);
-	if (ret) {
-		sqfs_perror(filename, "reading super block", ret);
-		goto out_fd;
-	}
-
-	sqfs_compressor_config_init(&cfg, super.compression_id,
-				    super.block_size,
-				    SQFS_COMP_FLAG_UNCOMPRESS);
-
-	ret = sqfs_compressor_create(&cfg, &cmp);
-
-#ifdef WITH_LZO
-	if (super.compression_id == SQFS_COMP_LZO && ret != 0)
-		ret = lzo_compressor_create(&cfg, &cmp);
-#endif
-
-	if (ret != 0) {
-		sqfs_perror(filename, "creating compressor", ret);
-		goto out_fd;
-	}
-
-	idtbl = sqfs_id_table_create(0);
-
-	if (idtbl == NULL) {
-		perror("creating ID table");
-		goto out_cmp;
-	}
-
-	ret = sqfs_id_table_read(idtbl, file, &super, cmp);
-	if (ret) {
-		sqfs_perror(filename, "loading ID table", ret);
-		goto out_id;
-	}
-
-	data = sqfs_data_reader_create(file, super.block_size, cmp);
-	if (data == NULL) {
-		sqfs_perror(filename, "creating data reader",
-			    SQFS_ERROR_ALLOC);
-		goto out_id;
-	}
-
-	ret = sqfs_data_reader_load_fragment_table(data, &super);
-	if (ret) {
-		sqfs_perror(filename, "loading fragment table", ret);
-		goto out_data;
-	}
-
-	dr = sqfs_dir_reader_create(&super, cmp, file);
-	if (dr == NULL) {
-		sqfs_perror(filename, "creating dir reader",
-			    SQFS_ERROR_ALLOC);
-		goto out_data;
-	}
-
-	if (!no_xattr && !(super.flags & SQFS_FLAG_NO_XATTRS)) {
-		xr = sqfs_xattr_reader_create(0);
-		if (xr == NULL) {
-			sqfs_perror(filename, "creating xattr reader",
-				    SQFS_ERROR_ALLOC);
-			goto out_dr;
-		}
-
-		ret = sqfs_xattr_reader_load(xr, &super, file, cmp);
-		if (ret) {
-			sqfs_perror(filename, "loading xattr table", ret);
-			goto out_xr;
-		}
-	}
-
-	if (num_subdirs == 0) {
-		ret = sqfs_dir_reader_get_full_hierarchy(dr, idtbl, NULL,
-							 0, &root);
-		if (ret) {
-			sqfs_perror(filename, "loading filesystem tree", ret);
-			goto out;
-		}
-	} else {
-		flags = 0;
-
-		if (keep_as_dir || num_subdirs > 1)
-			flags = SQFS_TREE_STORE_PARENTS;
-
-		for (i = 0; i < num_subdirs; ++i) {
-			ret = sqfs_dir_reader_get_full_hierarchy(dr, idtbl,
-								 subdirs[i],
-								 flags,
-								 &subtree);
-			if (ret) {
-				sqfs_perror(subdirs[i], "loading filesystem "
-					    "tree", ret);
-				goto out;
-			}
-
-			if (root == NULL) {
-				root = subtree;
-			} else {
-				root = tree_merge(root, subtree);
-			}
-		}
-	}
-
-	if (!no_links) {
-		if (sqfs_tree_find_hard_links(root, &links))
-			goto out_tree;
-
-		for (lnk = links; lnk != NULL; lnk = lnk->next) {
-			lnk->target = assemble_tar_path(lnk->target, false);
-			if (lnk->target == NULL)
-				goto out;
-		}
-	}
-
-	if (write_tree_dfs(root))
-		goto out;
-
-	if (terminate_archive())
-		goto out;
-
-	status = EXIT_SUCCESS;
-	fflush(out_file);
-out:
-	while (links != NULL) {
-		lnk = links;
-		links = links->next;
-		free(lnk->target);
-		free(lnk);
-	}
-out_tree:
-	if (root != NULL)
-		sqfs_dir_tree_destroy(root);
-out_xr:
-	if (xr != NULL)
-		sqfs_destroy(xr);
-out_dr:
-	sqfs_destroy(dr);
-out_data:
-	sqfs_destroy(data);
-out_id:
-	sqfs_destroy(idtbl);
-out_cmp:
-	sqfs_destroy(cmp);
-out_fd:
-	sqfs_destroy(file);
-out_dirs:
-	for (i = 0; i < num_subdirs; ++i)
-		free(subdirs[i]);
-	free(subdirs);
-	free(root_becomes);
-	return status;
-}
diff --git a/tar/tar2sqfs.c b/tar/tar2sqfs.c
deleted file mode 100644
index 6025dc9..0000000
--- a/tar/tar2sqfs.c
+++ /dev/null
@@ -1,544 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * tar2sqfs.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "common.h"
-#include "compat.h"
-#include "tar.h"
-
-#include <stdlib.h>
-#include <getopt.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-
-#ifdef _WIN32
-#include <io.h>
-#endif
-
-static struct option long_opts[] = {
-	{ "root-becomes", required_argument, NULL, 'r' },
-	{ "compressor", required_argument, NULL, 'c' },
-	{ "block-size", required_argument, NULL, 'b' },
-	{ "dev-block-size", required_argument, NULL, 'B' },
-	{ "defaults", required_argument, NULL, 'd' },
-	{ "num-jobs", required_argument, NULL, 'j' },
-	{ "queue-backlog", required_argument, NULL, 'Q' },
-	{ "comp-extra", required_argument, NULL, 'X' },
-	{ "no-skip", no_argument, NULL, 's' },
-	{ "no-xattr", no_argument, NULL, 'x' },
-	{ "no-keep-time", no_argument, NULL, 'k' },
-	{ "exportable", no_argument, NULL, 'e' },
-	{ "no-tail-packing", no_argument, NULL, 'T' },
-	{ "force", no_argument, NULL, 'f' },
-	{ "quiet", no_argument, NULL, 'q' },
-	{ "help", no_argument, NULL, 'h' },
-	{ "version", no_argument, NULL, 'V' },
-	{ NULL, 0, NULL, 0 },
-};
-
-static const char *short_opts = "r:c:b:B:d:X:j:Q:sxekfqThV";
-
-static const char *usagestr =
-"Usage: tar2sqfs [OPTIONS...] <sqfsfile>\n"
-"\n"
-"Read an uncompressed tar archive from stdin and turn it into a squashfs\n"
-"filesystem image.\n"
-"\n"
-"Possible options:\n"
-"\n"
-"  --root-becomes, -r <dir>    The specified directory becomes the root.\n"
-"                              Only its children are packed into the image\n"
-"                              and its attributes (ownership, permissions,\n"
-"                              xattrs, ...) are stored in the root inode.\n"
-"                              If not set and a tarbal has an entry for './'\n"
-"                              or '/', it becomes the root instead.\n"
-"\n"
-"  --compressor, -c <name>     Select the compressor to use.\n"
-"                              A list of available compressors is below.\n"
-"  --comp-extra, -X <options>  A comma separated list of extra options for\n"
-"                              the selected compressor. Specify 'help' to\n"
-"                              get a list of available options.\n"
-"  --num-jobs, -j <count>      Number of compressor jobs to create.\n"
-"  --queue-backlog, -Q <count> Maximum number of data blocks in the thread\n"
-"                              worker queue before the packer starts waiting\n"
-"                              for the block processors to catch up.\n"
-"                              Defaults to 10 times the number of jobs.\n"
-"  --block-size, -b <size>     Block size to use for Squashfs image.\n"
-"                              Defaults to %u.\n"
-"  --dev-block-size, -B <size> Device block size to padd the image to.\n"
-"                              Defaults to %u.\n"
-"  --defaults, -d <options>    A comma separated list of default values for\n"
-"                              implicitly created directories.\n"
-"\n"
-"                              Possible options:\n"
-"                                 uid=<value>    0 if not set.\n"
-"                                 gid=<value>    0 if not set.\n"
-"                                 mode=<value>   0755 if not set.\n"
-"                                 mtime=<value>  0 if not set.\n"
-"\n"
-"  --no-skip, -s               Abort if a tar record cannot be read instead\n"
-"                              of skipping it.\n"
-"  --no-xattr, -x              Do not copy extended attributes from archive.\n"
-"  --no-keep-time, -k          Do not keep the time stamps stored in the\n"
-"                              archive. Instead, set defaults on all files.\n"
-"  --exportable, -e            Generate an export table for NFS support.\n"
-"  --no-tail-packing, -T       Do not perform tail end packing on files that\n"
-"                              are larger than block size.\n"
-"  --force, -f                 Overwrite the output file if it exists.\n"
-"  --quiet, -q                 Do not print out progress reports.\n"
-"  --help, -h                  Print help text and exit.\n"
-"  --version, -V               Print version information and exit.\n"
-"\n"
-"Examples:\n"
-"\n"
-"\ttar2sqfs rootfs.sqfs < rootfs.tar\n"
-"\tzcat rootfs.tar.gz | tar2sqfs rootfs.sqfs\n"
-"\txzcat rootfs.tar.xz | tar2sqfs rootfs.sqfs\n"
-"\n";
-
-static bool dont_skip = false;
-static bool keep_time = true;
-static bool no_tail_pack = false;
-static sqfs_writer_cfg_t cfg;
-static sqfs_writer_t sqfs;
-static FILE *input_file = NULL;
-static char *root_becomes = NULL;
-
-static void process_args(int argc, char **argv)
-{
-	bool have_compressor;
-	int i, ret;
-
-	sqfs_writer_cfg_init(&cfg);
-
-	for (;;) {
-		i = getopt_long(argc, argv, short_opts, long_opts, NULL);
-		if (i == -1)
-			break;
-
-		switch (i) {
-		case 'T':
-			no_tail_pack = true;
-			break;
-		case 'b':
-			if (parse_size("Block size", &cfg.block_size,
-				       optarg, 0)) {
-				exit(EXIT_FAILURE);
-			}
-			break;
-		case 'B':
-			if (parse_size("Device block size", &cfg.devblksize,
-				       optarg, 0)) {
-				exit(EXIT_FAILURE);
-			}
-			if (cfg.devblksize < 1024) {
-				fputs("Device block size must be at "
-				      "least 1024\n", stderr);
-				exit(EXIT_FAILURE);
-			}
-			break;
-		case 'c':
-			have_compressor = true;
-			ret = sqfs_compressor_id_from_name(optarg);
-
-			if (ret < 0) {
-				have_compressor = false;
-#ifdef WITH_LZO
-				if (cfg.comp_id == SQFS_COMP_LZO)
-					have_compressor = true;
-#endif
-			}
-
-			if (!have_compressor) {
-				fprintf(stderr, "Unsupported compressor '%s'\n",
-					optarg);
-				exit(EXIT_FAILURE);
-			}
-
-			cfg.comp_id = ret;
-			break;
-		case 'j':
-			cfg.num_jobs = strtol(optarg, NULL, 0);
-			break;
-		case 'Q':
-			cfg.max_backlog = strtol(optarg, NULL, 0);
-			break;
-		case 'X':
-			cfg.comp_extra = optarg;
-			break;
-		case 'd':
-			cfg.fs_defaults = optarg;
-			break;
-		case 'x':
-			cfg.no_xattr = true;
-			break;
-		case 'k':
-			keep_time = false;
-			break;
-		case 'r':
-			free(root_becomes);
-			root_becomes = strdup(optarg);
-			if (root_becomes == NULL) {
-				perror("copying root directory name");
-				exit(EXIT_FAILURE);
-			}
-
-			if (canonicalize_name(root_becomes) != 0 ||
-			    strlen(root_becomes) == 0) {
-				fprintf(stderr,
-					"Invalid root directory '%s'.\n",
-					optarg);
-				goto fail_arg;
-			}
-			break;
-		case 's':
-			dont_skip = true;
-			break;
-		case 'e':
-			cfg.exportable = true;
-			break;
-		case 'f':
-			cfg.outmode |= SQFS_FILE_OPEN_OVERWRITE;
-			break;
-		case 'q':
-			cfg.quiet = true;
-			break;
-		case 'h':
-			printf(usagestr, SQFS_DEFAULT_BLOCK_SIZE,
-			       SQFS_DEVBLK_SIZE);
-			compressor_print_available();
-			exit(EXIT_SUCCESS);
-		case 'V':
-			print_version("tar2sqfs");
-			exit(EXIT_SUCCESS);
-		default:
-			goto fail_arg;
-		}
-	}
-
-	if (cfg.num_jobs < 1)
-		cfg.num_jobs = 1;
-
-	if (cfg.max_backlog < 1)
-		cfg.max_backlog = 10 * cfg.num_jobs;
-
-	if (cfg.comp_extra != NULL && strcmp(cfg.comp_extra, "help") == 0) {
-		compressor_print_help(cfg.comp_id);
-		exit(EXIT_SUCCESS);
-	}
-
-	if (optind >= argc) {
-		fputs("Missing argument: squashfs image\n", stderr);
-		goto fail_arg;
-	}
-
-	cfg.filename = argv[optind++];
-
-	if (optind < argc) {
-		fputs("Unknown extra arguments\n", stderr);
-		goto fail_arg;
-	}
-	return;
-fail_arg:
-	fputs("Try `tar2sqfs --help' for more information.\n", stderr);
-	exit(EXIT_FAILURE);
-}
-
-static int write_file(tar_header_decoded_t *hdr, file_info_t *fi,
-		      sqfs_u64 filesize)
-{
-	sqfs_file_t *file;
-	int flags;
-	int ret;
-
-	file = sqfs_get_stdin_file(input_file, hdr->sparse, filesize);
-	if (file == NULL) {
-		perror("packing files");
-		return -1;
-	}
-
-	flags = 0;
-	if (no_tail_pack && filesize > cfg.block_size)
-		flags |= SQFS_BLK_DONT_FRAGMENT;
-
-	ret = write_data_from_file(hdr->name, sqfs.data,
-				   (sqfs_inode_generic_t **)&fi->user_ptr,
-				   file, flags);
-	sqfs_destroy(file);
-
-	if (ret)
-		return -1;
-
-	return skip_padding(input_file, hdr->sparse == NULL ?
-			    filesize : hdr->record_size);
-}
-
-static int copy_xattr(tree_node_t *node, const tar_header_decoded_t *hdr)
-{
-	tar_xattr_t *xattr;
-	int ret;
-
-	ret = sqfs_xattr_writer_begin(sqfs.xwr);
-	if (ret) {
-		sqfs_perror(hdr->name, "beginning xattr block", ret);
-		return -1;
-	}
-
-	for (xattr = hdr->xattr; xattr != NULL; xattr = xattr->next) {
-		if (sqfs_get_xattr_prefix_id(xattr->key) < 0) {
-			fprintf(stderr, "%s: squashfs does not "
-				"support xattr prefix of %s\n",
-				dont_skip ? "ERROR" : "WARNING",
-				xattr->key);
-
-			if (dont_skip)
-				return -1;
-			continue;
-		}
-
-		ret = sqfs_xattr_writer_add(sqfs.xwr, xattr->key, xattr->value,
-					    xattr->value_len);
-		if (ret) {
-			sqfs_perror(hdr->name, "storing xattr key-value pair",
-				    ret);
-			return -1;
-		}
-	}
-
-	ret = sqfs_xattr_writer_end(sqfs.xwr, &node->xattr_idx);
-	if (ret) {
-		sqfs_perror(hdr->name, "completing xattr block", ret);
-		return -1;
-	}
-
-	return 0;
-}
-
-static int create_node_and_repack_data(tar_header_decoded_t *hdr)
-{
-	tree_node_t *node;
-
-	if (hdr->is_hard_link) {
-		node = fstree_add_hard_link(&sqfs.fs, hdr->name,
-					    hdr->link_target);
-		if (node == NULL)
-			goto fail_errno;
-
-		if (!cfg.quiet) {
-			printf("Hard link %s -> %s\n", hdr->name,
-			       hdr->link_target);
-		}
-		return 0;
-	}
-
-	if (!keep_time) {
-		hdr->sb.st_mtime = sqfs.fs.defaults.st_mtime;
-	}
-
-	node = fstree_add_generic(&sqfs.fs, hdr->name,
-				  &hdr->sb, hdr->link_target);
-	if (node == NULL)
-		goto fail_errno;
-
-	if (!cfg.quiet)
-		printf("Packing %s\n", hdr->name);
-
-	if (!cfg.no_xattr) {
-		if (copy_xattr(node, hdr))
-			return -1;
-	}
-
-	if (S_ISREG(hdr->sb.st_mode)) {
-		if (write_file(hdr, &node->data.file, hdr->sb.st_size))
-			return -1;
-	}
-
-	return 0;
-fail_errno:
-	perror(hdr->name);
-	return -1;
-}
-
-static int set_root_attribs(const tar_header_decoded_t *hdr)
-{
-	if (hdr->is_hard_link || !S_ISDIR(hdr->sb.st_mode)) {
-		fprintf(stderr, "'%s' is not a directory!\n", hdr->name);
-		return -1;
-	}
-
-	sqfs.fs.root->uid = hdr->sb.st_uid;
-	sqfs.fs.root->gid = hdr->sb.st_gid;
-	sqfs.fs.root->mode = hdr->sb.st_mode;
-
-	if (keep_time)
-		sqfs.fs.root->mod_time = hdr->sb.st_mtime;
-
-	if (!cfg.no_xattr) {
-		if (copy_xattr(sqfs.fs.root, hdr))
-			return -1;
-	}
-
-	return 0;
-}
-
-static int process_tar_ball(void)
-{
-	bool skip, is_root, is_prefixed;
-	tar_header_decoded_t hdr;
-	sqfs_u64 offset, count;
-	sparse_map_t *m;
-	size_t rootlen;
-	int ret;
-
-	rootlen = root_becomes == NULL ? 0 : strlen(root_becomes);
-
-	for (;;) {
-		ret = read_header(input_file, &hdr);
-		if (ret > 0)
-			break;
-		if (ret < 0)
-			return -1;
-
-		if (hdr.mtime < 0)
-			hdr.mtime = 0;
-
-		if ((sqfs_u64)hdr.mtime > 0x0FFFFFFFFUL)
-			hdr.mtime = 0x0FFFFFFFFUL;
-
-		hdr.sb.st_mtime = hdr.mtime;
-
-		skip = false;
-		is_root = false;
-		is_prefixed = true;
-
-		if (hdr.name == NULL || canonicalize_name(hdr.name) != 0) {
-			fprintf(stderr, "skipping '%s' (invalid name)\n",
-				hdr.name);
-			skip = true;
-		}
-
-		if (root_becomes != NULL) {
-			if (strncmp(hdr.name, root_becomes, rootlen) == 0) {
-				if (hdr.name[rootlen] == '\0') {
-					is_root = true;
-				} else if (hdr.name[rootlen] != '/') {
-					is_prefixed = false;
-				}
-			} else {
-				is_prefixed = false;
-			}
-
-			if (is_prefixed && !is_root) {
-				memmove(hdr.name, hdr.name + rootlen + 1,
-					strlen(hdr.name + rootlen + 1) + 1);
-			}
-
-			if (is_prefixed && hdr.name[0] == '\0') {
-				fputs("skipping entry with empty name\n",
-				      stderr);
-				skip = true;
-			}
-		} else if (hdr.name[0] == '\0') {
-			is_root = true;
-		}
-
-		if (!is_prefixed) {
-			clear_header(&hdr);
-			continue;
-		}
-
-		if (is_root) {
-			if (set_root_attribs(&hdr))
-				goto fail;
-			clear_header(&hdr);
-			continue;
-		}
-
-		if (!skip && hdr.unknown_record) {
-			fprintf(stderr, "%s: unknown entry type\n", hdr.name);
-			skip = true;
-		}
-
-		if (!skip && hdr.sparse != NULL) {
-			offset = hdr.sparse->offset;
-			count = 0;
-
-			for (m = hdr.sparse; m != NULL; m = m->next) {
-				if (m->offset < offset) {
-					skip = true;
-					break;
-				}
-				offset = m->offset + m->count;
-				count += m->count;
-			}
-
-			if (count != hdr.record_size)
-				skip = true;
-
-			if (skip) {
-				fprintf(stderr, "%s: broken sparse "
-					"file layout\n", hdr.name);
-			}
-		}
-
-		if (skip) {
-			if (dont_skip)
-				goto fail;
-			if (skip_entry(input_file, hdr.sb.st_size))
-				goto fail;
-
-			clear_header(&hdr);
-			continue;
-		}
-
-		if (create_node_and_repack_data(&hdr))
-			goto fail;
-
-		clear_header(&hdr);
-	}
-
-	return 0;
-fail:
-	clear_header(&hdr);
-	return -1;
-}
-
-int main(int argc, char **argv)
-{
-	int status = EXIT_FAILURE;
-
-	process_args(argc, argv);
-
-#ifdef _WIN32
-	_setmode(_fileno(stdin), _O_BINARY);
-	input_file = stdin;
-#else
-	input_file = freopen(NULL, "rb", stdin);
-#endif
-
-	if (input_file == NULL) {
-		perror("changing stdin to binary mode");
-		return EXIT_FAILURE;
-	}
-
-	if (sqfs_writer_init(&sqfs, &cfg))
-		return EXIT_FAILURE;
-
-	if (process_tar_ball())
-		goto out;
-
-	if (fstree_post_process(&sqfs.fs))
-		goto out;
-
-	if (sqfs_writer_finish(&sqfs, &cfg))
-		goto out;
-
-	status = EXIT_SUCCESS;
-out:
-	sqfs_writer_cleanup(&sqfs, status);
-	return status;
-}