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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-19 17:36:53 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-20 18:34:16 +0200
commit37a1176c3191cd722de613e26eda91518ca73751 (patch)
tree037aedf6f9de72203130102c05fe1bdf956275e0 /unpack
parent5dcd267e9f0c5d93793e6d5e68279bd5dde5dff6 (diff)
Remove fstree code from rdsquashfs
Use the directory reader from libsquashfs instead. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'unpack')
-rw-r--r--unpack/Makemodule.am2
-rw-r--r--unpack/describe.c35
-rw-r--r--unpack/dump_xattrs.c73
-rw-r--r--unpack/fill_files.c186
-rw-r--r--unpack/list_files.c55
-rw-r--r--unpack/optimize_unpack_order.c119
-rw-r--r--unpack/options.c16
-rw-r--r--unpack/rdsquashfs.c91
-rw-r--r--unpack/rdsquashfs.h18
-rw-r--r--unpack/restore_fstree.c199
10 files changed, 501 insertions, 293 deletions
diff --git a/unpack/Makemodule.am b/unpack/Makemodule.am
index 964cc05..0dbd07f 100644
--- a/unpack/Makemodule.am
+++ b/unpack/Makemodule.am
@@ -1,7 +1,7 @@
rdsquashfs_SOURCES = unpack/rdsquashfs.c unpack/rdsquashfs.h
rdsquashfs_SOURCES += unpack/list_files.c unpack/options.c
rdsquashfs_SOURCES += unpack/restore_fstree.c unpack/describe.c
-rdsquashfs_SOURCES += unpack/fill_files.c unpack/optimize_unpack_order.c
+rdsquashfs_SOURCES += unpack/fill_files.c unpack/dump_xattrs.c
rdsquashfs_LDADD = libsqfshelper.a libsquashfs.la libfstree.a libutil.la
bin_PROGRAMS += rdsquashfs
diff --git a/unpack/describe.c b/unpack/describe.c
index c3166c4..336eb4d 100644
--- a/unpack/describe.c
+++ b/unpack/describe.c
@@ -6,9 +6,9 @@
*/
#include "rdsquashfs.h"
-static int print_name(tree_node_t *n)
+static int print_name(const sqfs_tree_node_t *n)
{
- char *start, *ptr, *name = fstree_get_path(n);
+ char *start, *ptr, *name = sqfs_tree_node_get_path(n);
int ret;
if (name == NULL) {
@@ -48,12 +48,13 @@ static int print_name(tree_node_t *n)
return 0;
}
-static void print_perm(tree_node_t *n)
+static void print_perm(const sqfs_tree_node_t *n)
{
- printf(" 0%o %d %d", n->mode & (~S_IFMT), n->uid, n->gid);
+ printf(" 0%o %d %d", n->inode->base.mode & (~S_IFMT), n->uid, n->gid);
}
-static int print_simple(const char *type, tree_node_t *n, const char *extra)
+static int print_simple(const char *type, const sqfs_tree_node_t *n,
+ const char *extra)
{
printf("%s ", type);
if (print_name(n))
@@ -65,15 +66,15 @@ static int print_simple(const char *type, tree_node_t *n, const char *extra)
return 0;
}
-int describe_tree(tree_node_t *root, const char *unpack_root)
+int describe_tree(const sqfs_tree_node_t *root, const char *unpack_root)
{
- tree_node_t *n;
+ const sqfs_tree_node_t *n;
- switch (root->mode & S_IFMT) {
+ switch (root->inode->base.mode & S_IFMT) {
case S_IFSOCK:
return print_simple("sock", root, NULL);
case S_IFLNK:
- return print_simple("slink", root, root->data.slink_target);
+ return print_simple("slink", root, root->inode->slink_target);
case S_IFIFO:
return print_simple("pipe", root, NULL);
case S_IFREG:
@@ -92,8 +93,18 @@ int describe_tree(tree_node_t *root, const char *unpack_root)
case S_IFCHR:
case S_IFBLK: {
char buffer[32];
- sprintf(buffer, "%c %d %d", S_ISCHR(root->mode) ? 'c' : 'b',
- major(root->data.devno), minor(root->data.devno));
+ uint32_t devno;
+
+ if (root->inode->base.type == SQFS_INODE_EXT_BDEV ||
+ root->inode->base.type == SQFS_INODE_EXT_CDEV) {
+ devno = root->inode->data.dev_ext.devno;
+ } else {
+ devno = root->inode->data.dev.devno;
+ }
+
+ sprintf(buffer, "%c %d %d",
+ S_ISCHR(root->inode->base.mode) ? 'c' : 'b',
+ major(devno), minor(devno));
return print_simple("nod", root, buffer);
}
case S_IFDIR:
@@ -102,7 +113,7 @@ int describe_tree(tree_node_t *root, const char *unpack_root)
return -1;
}
- for (n = root->data.dir->children; n != NULL; n = n->next) {
+ for (n = root->children; n != NULL; n = n->next) {
if (describe_tree(n, unpack_root))
return -1;
}
diff --git a/unpack/dump_xattrs.c b/unpack/dump_xattrs.c
new file mode 100644
index 0000000..c619767
--- /dev/null
+++ b/unpack/dump_xattrs.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * dump_xattrs.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "rdsquashfs.h"
+
+int dump_xattrs(sqfs_xattr_reader_t *xattr, const sqfs_inode_generic_t *inode)
+{
+ sqfs_xattr_value_t *value;
+ sqfs_xattr_entry_t *key;
+ sqfs_xattr_id_t desc;
+ uint32_t index;
+ size_t i;
+
+ if (xattr == NULL)
+ return 0;
+
+ switch (inode->base.type) {
+ case SQFS_INODE_EXT_DIR:
+ index = inode->data.dir_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_FILE:
+ index = inode->data.file_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_SLINK:
+ index = inode->data.slink_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_BDEV:
+ case SQFS_INODE_EXT_CDEV:
+ index = inode->data.dev_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_FIFO:
+ case SQFS_INODE_EXT_SOCKET:
+ index = inode->data.ipc_ext.xattr_idx;
+ break;
+ default:
+ return 0;
+ }
+
+ if (index == 0xFFFFFFFF)
+ return 0;
+
+ if (sqfs_xattr_reader_get_desc(xattr, index, &desc)) {
+ fputs("Error resolving xattr index\n", stderr);
+ return -1;
+ }
+
+ if (sqfs_xattr_reader_seek_kv(xattr, &desc)) {
+ fputs("Error locating xattr key-value pairs\n", stderr);
+ return -1;
+ }
+
+ for (i = 0; i < desc.count; ++i) {
+ if (sqfs_xattr_reader_read_key(xattr, &key)) {
+ fputs("Error reading xattr key\n", stderr);
+ return -1;
+ }
+
+ if (sqfs_xattr_reader_read_value(xattr, key, &value)) {
+ fputs("Error reading xattr value\n", stderr);
+ free(key);
+ return -1;
+ }
+
+ printf("%s=%s\n", key->key, value->value);
+ free(key);
+ free(value);
+ }
+
+ return 0;
+}
diff --git a/unpack/fill_files.c b/unpack/fill_files.c
index df6ca7e..de0b676 100644
--- a/unpack/fill_files.c
+++ b/unpack/fill_files.c
@@ -7,27 +7,173 @@
#include "config.h"
#include "rdsquashfs.h"
-static int fill_files(data_reader_t *data, file_info_t *list, int flags)
+static struct file_ent {
+ char *path;
+ const sqfs_inode_generic_t *inode;
+} *files = NULL;
+
+static size_t num_files = 0, max_files = 0;
+static size_t block_size = 0;
+
+static uint32_t get_frag_idx(const sqfs_inode_generic_t *inode)
{
- file_info_t *fi;
- int fd;
+ if (inode->base.type == SQFS_INODE_EXT_FILE)
+ return inode->data.file_ext.fragment_idx;
+
+ return inode->data.file.fragment_index;
+}
+
+static uint32_t get_frag_off(const sqfs_inode_generic_t *inode)
+{
+ if (inode->base.type == SQFS_INODE_EXT_FILE)
+ return inode->data.file_ext.fragment_offset;
+
+ return inode->data.file.fragment_offset;
+}
+
+static uint64_t get_size(const sqfs_inode_generic_t *inode)
+{
+ if (inode->base.type == SQFS_INODE_EXT_FILE)
+ return inode->data.file_ext.file_size;
+
+ return inode->data.file.file_size;
+}
+
+static uint64_t get_start(const sqfs_inode_generic_t *inode)
+{
+ if (inode->base.type == SQFS_INODE_EXT_FILE)
+ return inode->data.file_ext.blocks_start;
+
+ return inode->data.file.blocks_start;
+}
+
+static bool has_fragment(const struct file_ent *ent)
+{
+ if (get_size(ent->inode) % block_size == 0)
+ return false;
+
+ return get_frag_off(ent->inode) < block_size &&
+ (get_frag_idx(ent->inode) != 0xFFFFFFFF);
+}
+
+static int compare_files(const void *l, const void *r)
+{
+ const struct file_ent *lhs = l, *rhs = r;
+
+ /* Files with fragments come first, ordered by ID.
+ In case of tie, files without data blocks come first,
+ and the others are ordered by start block. */
+ if (has_fragment(lhs)) {
+ if (!(has_fragment(rhs)))
+ return -1;
+
+ if (get_frag_idx(lhs->inode) < get_frag_idx(rhs->inode))
+ return -1;
+
+ if (get_frag_idx(lhs->inode) > get_frag_idx(rhs->inode))
+ return 1;
+
+ if (get_size(lhs->inode) < block_size)
+ return (get_size(rhs->inode) < block_size) ? 0 : -1;
+
+ if (get_size(rhs->inode) < block_size)
+ return 1;
+
+ goto order_by_start;
+ }
+
+ if (has_fragment(rhs))
+ return 1;
- for (fi = list; fi != NULL; fi = fi->next) {
- if (fi->input_file == NULL)
- continue;
+ /* order the rest by start block */
+order_by_start:
+ return get_start(lhs->inode) < get_start(rhs->inode) ? -1 :
+ get_start(lhs->inode) > get_start(rhs->inode) ? 1 : 0;
+}
+
+static int add_file(const sqfs_tree_node_t *node)
+{
+ size_t new_sz;
+ char *path;
+ void *new;
+
+ if (num_files == max_files) {
+ new_sz = max_files ? max_files * 2 : 256;
+ new = realloc(files, sizeof(files[0]) * new_sz);
+
+ if (new == NULL) {
+ perror("expanding file list");
+ return -1;
+ }
+
+ files = new;
+ max_files = new_sz;
+ }
- fd = open(fi->input_file, O_WRONLY);
+ path = sqfs_tree_node_get_path(node);
+ if (path == NULL) {
+ perror("assembling file path");
+ return -1;
+ }
+
+ if (canonicalize_name(path)) {
+ fprintf(stderr, "Invalid file path '%s'\n", path);
+ free(path);
+ return -1;
+ }
+
+ files[num_files].path = path;
+ files[num_files].inode = node->inode;
+ num_files++;
+ return 0;
+}
+
+static void clear_file_list(void)
+{
+ size_t i;
+
+ for (i = 0; i < num_files; ++i)
+ free(files[i].path);
+
+ free(files);
+ files = NULL;
+ num_files = 0;
+ max_files = 0;
+}
+
+static int gen_file_list_dfs(const sqfs_tree_node_t *n)
+{
+ if (S_ISREG(n->inode->base.mode))
+ return add_file(n);
+
+ if (S_ISDIR(n->inode->base.mode)) {
+ for (n = n->children; n != NULL; n = n->next) {
+ if (gen_file_list_dfs(n))
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int fill_files(data_reader_t *data, int flags)
+{
+ size_t i;
+ int fd;
+
+ for (i = 0; i < num_files; ++i) {
+ fd = open(files[i].path, O_WRONLY);
if (fd < 0) {
fprintf(stderr, "unpacking %s: %s\n",
- fi->input_file, strerror(errno));
+ files[i].path, strerror(errno));
return -1;
}
if (!(flags & UNPACK_QUIET))
- printf("unpacking %s\n", fi->input_file);
+ printf("unpacking %s\n", files[i].path);
- if (data_reader_dump_file(data, fi, fd,
- (flags & UNPACK_NO_SPARSE) == 0)) {
+ if (data_reader_dump(data, files[i].inode, fd,
+ (flags & UNPACK_NO_SPARSE) == 0)) {
close(fd);
return -1;
}
@@ -38,17 +184,21 @@ static int fill_files(data_reader_t *data, file_info_t *list, int flags)
return 0;
}
-int fill_unpacked_files(fstree_t *fs, data_reader_t *data, int flags)
+int fill_unpacked_files(size_t blk_sz, const sqfs_tree_node_t *root,
+ data_reader_t *data, int flags)
{
- file_info_t *list, *it;
- int status = 0;
+ int status;
- list = optimize_unpack_order(fs);
+ block_size = blk_sz;
- status = fill_files(data, list, flags);
+ if (gen_file_list_dfs(root)) {
+ clear_file_list();
+ return -1;
+ }
- for (it = list; it != NULL; it = it->next)
- free(it->input_file);
+ qsort(files, num_files, sizeof(files[0]), compare_files);
+ status = fill_files(data, flags);
+ clear_file_list();
return status;
}
diff --git a/unpack/list_files.c b/unpack/list_files.c
index 857657b..11e18cb 100644
--- a/unpack/list_files.c
+++ b/unpack/list_files.c
@@ -81,23 +81,40 @@ static void print_size(uint64_t size, char *buffer)
}
}
-static void print_node_size(tree_node_t *n, char *buffer)
+static void print_node_size(const sqfs_tree_node_t *n, char *buffer)
{
- switch (n->mode & S_IFMT) {
+ switch (n->inode->base.mode & S_IFMT) {
case S_IFLNK:
- print_size(strlen(n->data.slink_target), buffer);
+ print_size(strlen(n->inode->slink_target), buffer);
break;
case S_IFREG:
- print_size(n->data.file->size, buffer);
+ if (n->inode->base.type == SQFS_INODE_EXT_FILE) {
+ print_size(n->inode->data.file_ext.file_size, buffer);
+ } else {
+ print_size(n->inode->data.file.file_size, buffer);
+ }
break;
case S_IFDIR:
- print_size(n->data.dir->size, buffer);
+ if (n->inode->base.type == SQFS_INODE_EXT_DIR) {
+ print_size(n->inode->data.dir_ext.size, buffer);
+ } else {
+ print_size(n->inode->data.dir.size, buffer);
+ }
break;
case S_IFBLK:
- case S_IFCHR:
- sprintf(buffer, "%u:%u", major(n->data.devno),
- minor(n->data.devno));
+ case S_IFCHR: {
+ uint32_t devno;
+
+ if (n->inode->base.type == SQFS_INODE_EXT_BDEV ||
+ n->inode->base.type == SQFS_INODE_EXT_CDEV) {
+ devno = n->inode->data.dev_ext.devno;
+ } else {
+ devno = n->inode->data.dev.devno;
+ }
+
+ sprintf(buffer, "%u:%u", major(devno), minor(devno));
break;
+ }
default:
buffer[0] = '0';
buffer[1] = '\0';
@@ -105,14 +122,14 @@ static void print_node_size(tree_node_t *n, char *buffer)
}
}
-void list_files(tree_node_t *node)
+void list_files(const sqfs_tree_node_t *node)
{
int i, max_uid_chars = 0, max_gid_chars = 0, max_sz_chars = 0;
char modestr[12], sizestr[32];
- tree_node_t *n;
+ const sqfs_tree_node_t *n;
- if (S_ISDIR(node->mode)) {
- for (n = node->data.dir->children; n != NULL; n = n->next) {
+ if (S_ISDIR(node->inode->base.mode)) {
+ for (n = node->children; n != NULL; n = n->next) {
i = count_int_chars(n->uid);
max_uid_chars = i > max_uid_chars ? i : max_uid_chars;
@@ -124,8 +141,8 @@ void list_files(tree_node_t *node)
max_sz_chars = i > max_sz_chars ? i : max_sz_chars;
}
- for (n = node->data.dir->children; n != NULL; n = n->next) {
- mode_to_str(n->mode, modestr);
+ for (n = node->children; n != NULL; n = n->next) {
+ mode_to_str(n->inode->base.mode, modestr);
print_node_size(n, sizestr);
printf("%s %*u/%-*u %*s %s", modestr,
@@ -134,21 +151,21 @@ void list_files(tree_node_t *node)
max_sz_chars, sizestr,
n->name);
- if (S_ISLNK(n->mode)) {
- printf(" -> %s\n", n->data.slink_target);
+ if (S_ISLNK(n->inode->base.mode)) {
+ printf(" -> %s\n", n->inode->slink_target);
} else {
fputc('\n', stdout);
}
}
} else {
- mode_to_str(node->mode, modestr);
+ mode_to_str(node->inode->base.mode, modestr);
print_node_size(node, sizestr);
printf("%s %u/%u %s %s", modestr,
node->uid, node->gid, sizestr, node->name);
- if (S_ISLNK(node->mode)) {
- printf(" -> %s\n", node->data.slink_target);
+ if (S_ISLNK(node->inode->base.mode)) {
+ printf(" -> %s\n", node->inode->slink_target);
} else {
fputc('\n', stdout);
}
diff --git a/unpack/optimize_unpack_order.c b/unpack/optimize_unpack_order.c
deleted file mode 100644
index a76dd51..0000000
--- a/unpack/optimize_unpack_order.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * optimize_unpack_order.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "rdsquashfs.h"
-
-static bool has_fragment(const fstree_t *fs, const file_info_t *file)
-{
- if (file->size % fs->block_size == 0)
- return false;
-
- return file->fragment_offset < fs->block_size &&
- (file->fragment != 0xFFFFFFFF);
-}
-
-static int compare_files(const fstree_t *fs, const file_info_t *lhs,
- const file_info_t *rhs)
-{
- /* NOOP < everything else */
- if (lhs->input_file == NULL)
- return rhs->input_file == NULL ? 0 : -1;
-
- if (rhs->input_file == NULL)
- return 1;
-
- /* Files with fragments come first, ordered by ID.
- In case of tie, files without data blocks come first,
- and the others are ordered by start block. */
- if (has_fragment(fs, lhs)) {
- if (!(has_fragment(fs, rhs)))
- return -1;
-
- if (lhs->fragment < rhs->fragment)
- return -1;
- if (lhs->fragment > rhs->fragment)
- return 1;
-
- if (lhs->size < fs->block_size)
- return (rhs->size < fs->block_size) ? 0 : -1;
- if (rhs->size < fs->block_size)
- return 1;
- goto order_by_start;
- }
-
- if (has_fragment(fs, rhs))
- return 1;
-
- /* order the rest by start block */
-order_by_start:
- return lhs->startblock < rhs->startblock ? -1 :
- lhs->startblock > rhs->startblock ? 1 : 0;
-}
-
-/* TODO: unify ad-hoc merge sort with the one in fstree_sort */
-static file_info_t *merge(const fstree_t *fs, file_info_t *lhs,
- file_info_t *rhs)
-{
- file_info_t *it;
- file_info_t *head = NULL;
- file_info_t **next_ptr = &head;
-
- while (lhs != NULL && rhs != NULL) {
- if (compare_files(fs, lhs, rhs) <= 0) {
- it = lhs;
- lhs = lhs->next;
- } else {
- it = rhs;
- rhs = rhs->next;
- }
-
- *next_ptr = it;
- next_ptr = &it->next;
- }
-
- it = (lhs != NULL ? lhs : rhs);
- *next_ptr = it;
- return head;
-}
-
-static file_info_t *list_sort(const fstree_t *fs, file_info_t *head)
-{
- file_info_t *it, *half, *prev;
-
- it = half = prev = head;
- while (it != NULL) {
- prev = half;
- half = half->next;
- it = it->next;
- if (it != NULL) {
- it = it->next;
- }
- }
-
- // half refers to the (count/2)'th element ROUNDED UP.
- // It will be null therefore only in the empty and the
- // single element list
- if (half == NULL) {
- return head;
- }
-
- prev->next = NULL;
-
- return merge(fs, list_sort(fs, head), list_sort(fs, half));
-}
-
-file_info_t *optimize_unpack_order(fstree_t *fs)
-{
- file_info_t *file_list;
-
- file_list = list_sort(fs, fs->files);
- while (file_list != NULL && file_list->input_file == NULL)
- file_list = file_list->next;
-
- fs->files = NULL;
- return file_list;
-}
diff --git a/unpack/options.c b/unpack/options.c
index c7689eb..190a78b 100644
--- a/unpack/options.c
+++ b/unpack/options.c
@@ -124,19 +124,19 @@ void process_command_line(options_t *opt, int argc, char **argv)
switch (i) {
case 'D':
- opt->rdtree_flags |= RDTREE_NO_DEVICES;
+ opt->rdtree_flags |= SQFS_TREE_NO_DEVICES;
break;
case 'S':
- opt->rdtree_flags |= RDTREE_NO_SOCKETS;
+ opt->rdtree_flags |= SQFS_TREE_NO_SOCKETS;
break;
case 'F':
- opt->rdtree_flags |= RDTREE_NO_FIFO;
+ opt->rdtree_flags |= SQFS_TREE_NO_FIFO;
break;
case 'L':
- opt->rdtree_flags |= RDTREE_NO_SLINKS;
+ opt->rdtree_flags |= SQFS_TREE_NO_SLINKS;
break;
case 'E':
- opt->rdtree_flags |= RDTREE_NO_EMPTY;
+ opt->rdtree_flags |= SQFS_TREE_NO_EMPTY;
break;
case 'C':
opt->flags |= UNPACK_CHMOD;
@@ -150,7 +150,6 @@ void process_command_line(options_t *opt, int argc, char **argv)
#ifdef HAVE_SYS_XATTR_H
case 'X':
opt->flags |= UNPACK_SET_XATTR;
- opt->rdtree_flags |= RDTREE_READ_XATTR;
break;
#endif
case 'T':
@@ -167,7 +166,6 @@ void process_command_line(options_t *opt, int argc, char **argv)
break;
case 'x':
opt->op = OP_RDATTR;
- opt->rdtree_flags |= RDTREE_READ_XATTR;
opt->cmdpath = get_path(opt->cmdpath, optarg);
break;
case 'l':
@@ -202,6 +200,10 @@ void process_command_line(options_t *opt, int argc, char **argv)
goto fail_arg;
}
+ if (opt->op == OP_LS || opt->op == OP_CAT || opt->op == OP_RDATTR) {
+ opt->rdtree_flags |= SQFS_TREE_NO_RECURSE;
+ }
+
if (optind >= argc) {
fputs("Missing image argument\n", stderr);
goto fail_arg;
diff --git a/unpack/rdsquashfs.c b/unpack/rdsquashfs.c
index ea21318..60bfd19 100644
--- a/unpack/rdsquashfs.c
+++ b/unpack/rdsquashfs.c
@@ -6,32 +6,20 @@
*/
#include "rdsquashfs.h"
-static void dump_xattrs(fstree_t *fs, tree_xattr_t *xattr)
-{
- const char *key, *value;
- size_t i;
-
- for (i = 0; i < xattr->num_attr; ++i) {
- key = str_table_get_string(&fs->xattr_keys,
- xattr->attr[i].key_index);
- value = str_table_get_string(&fs->xattr_values,
- xattr->attr[i].value_index);
-
- printf("%s=%s\n", key, value);
- }
-}
-
int main(int argc, char **argv)
{
+ sqfs_xattr_reader_t *xattr = NULL;
sqfs_compressor_config_t cfg;
int status = EXIT_FAILURE;
+ sqfs_dir_reader_t *dirrd;
sqfs_compressor_t *cmp;
+ sqfs_id_table_t *idtbl;
+ sqfs_tree_node_t *n;
data_reader_t *data;
sqfs_super_t super;
sqfs_file_t *file;
- tree_node_t *n;
options_t opt;
- fstree_t fs;
+ int ret;
process_command_line(&opt, argc, argv);
@@ -66,26 +54,41 @@ int main(int argc, char **argv)
goto out_cmp;
}
- if (super.flags & SQFS_FLAG_NO_XATTRS)
- opt.rdtree_flags &= ~RDTREE_READ_XATTR;
+ if (!(super.flags & SQFS_FLAG_NO_XATTRS)) {
+ xattr = sqfs_xattr_reader_create(file, &super, cmp);
+
+ if (sqfs_xattr_reader_load_locations(xattr)) {
+ fputs("Error loading xattr table\n", stderr);
+ goto out_xr;
+ }
+ }
+
+ idtbl = sqfs_id_table_create();
+ if (idtbl == NULL) {
+ perror("creating ID table");
+ goto out_xr;
+ }
- if (deserialize_fstree(&fs, &super, cmp, file, opt.rdtree_flags))
- goto out_cmp;
+ if (sqfs_id_table_read(idtbl, file, &super, cmp)) {
+ fputs("error loading ID table\n", stderr);
+ goto out_id;
+ }
- fstree_gen_file_list(&fs);
+ dirrd = sqfs_dir_reader_create(&super, cmp, file);
+ if (dirrd == NULL) {
+ perror("creating dir reader");
+ goto out_id;
+ }
data = data_reader_create(file, &super, cmp);
if (data == NULL)
- goto out_fs;
+ goto out_dr;
- if (opt.cmdpath != NULL) {
- n = fstree_node_from_path(&fs, opt.cmdpath);
- if (n == NULL) {
- perror(opt.cmdpath);
- goto out;
- }
- } else {
- n = fs.root;
+ ret = sqfs_dir_reader_get_full_hierarchy(dirrd, idtbl, opt.cmdpath,
+ opt.rdtree_flags, &n);
+ if (ret) {
+ fprintf(stderr, "error reading hierarchy: %d\n", ret);
+ goto out_data;
}
switch (opt.op) {
@@ -93,14 +96,13 @@ int main(int argc, char **argv)
list_files(n);
break;
case OP_CAT:
- if (!S_ISREG(n->mode)) {
+ if (!S_ISREG(n->inode->base.mode)) {
fprintf(stderr, "/%s: not a regular file\n",
opt.cmdpath);
goto out;
}
- if (data_reader_dump_file(data, n->data.file,
- STDOUT_FILENO, false))
+ if (data_reader_dump(data, n->inode, STDOUT_FILENO, false))
goto out;
break;
case OP_UNPACK:
@@ -115,30 +117,37 @@ int main(int argc, char **argv)
if (restore_fstree(n, opt.flags))
goto out;
- if (fill_unpacked_files(&fs, data, opt.flags))
+ if (fill_unpacked_files(super.block_size, n, data, opt.flags))
goto out;
- if (update_tree_attribs(&fs, n, opt.flags))
+ if (update_tree_attribs(xattr, n, opt.flags))
goto out;
if (opt.unpack_root != NULL && popd() != 0)
goto out;
break;
case OP_DESCRIBE:
- if (describe_tree(fs.root, opt.unpack_root))
+ if (describe_tree(n, opt.unpack_root))
goto out;
break;
case OP_RDATTR:
- if (n->xattr != NULL)
- dump_xattrs(&fs, n->xattr);
+ if (dump_xattrs(xattr, n->inode))
+ goto out;
break;
}
status = EXIT_SUCCESS;
out:
+ sqfs_dir_tree_destroy(n);
+out_data:
data_reader_destroy(data);
-out_fs:
- fstree_cleanup(&fs);
+out_dr:
+ sqfs_dir_reader_destroy(dirrd);
+out_id:
+ sqfs_id_table_destroy(idtbl);
+out_xr:
+ if (xattr != NULL)
+ sqfs_xattr_reader_destroy(xattr);
out_cmp:
cmp->destroy(cmp);
out_file:
diff --git a/unpack/rdsquashfs.h b/unpack/rdsquashfs.h
index 065f4aa..e348293 100644
--- a/unpack/rdsquashfs.h
+++ b/unpack/rdsquashfs.h
@@ -12,7 +12,9 @@
#include "sqfs/meta_reader.h"
#include "sqfs/compress.h"
#include "sqfs/id_table.h"
+#include "sqfs/xattr.h"
#include "sqfs/data.h"
+
#include "data_reader.h"
#include "highlevel.h"
#include "fstree.h"
@@ -62,18 +64,20 @@ typedef struct {
const char *image_name;
} options_t;
-void list_files(tree_node_t *node);
+void list_files(const sqfs_tree_node_t *node);
-int restore_fstree(tree_node_t *root, int flags);
+int restore_fstree(sqfs_tree_node_t *root, int flags);
-int update_tree_attribs(fstree_t *fs, tree_node_t *root, int flags);
+int update_tree_attribs(sqfs_xattr_reader_t *xattr,
+ const sqfs_tree_node_t *root, int flags);
-int fill_unpacked_files(fstree_t *fs, data_reader_t *data, int flags);
+int fill_unpacked_files(size_t blk_sz, const sqfs_tree_node_t *root,
+ data_reader_t *data, int flags);
-int describe_tree(tree_node_t *root, const char *unpack_root);
+int describe_tree(const sqfs_tree_node_t *root, const char *unpack_root);
-void process_command_line(options_t *opt, int argc, char **argv);
+int dump_xattrs(sqfs_xattr_reader_t *xattr, const sqfs_inode_generic_t *inode);
-file_info_t *optimize_unpack_order(fstree_t *fs);
+void process_command_line(options_t *opt, int argc, char **argv);
#endif /* RDSQUASHFS_H */
diff --git a/unpack/restore_fstree.c b/unpack/restore_fstree.c
index 21bae3f..afa4abb 100644
--- a/unpack/restore_fstree.c
+++ b/unpack/restore_fstree.c
@@ -6,30 +6,30 @@
*/
#include "rdsquashfs.h"
-static int create_node(tree_node_t *n, int flags)
+static int create_node(const sqfs_tree_node_t *n, int flags)
{
- tree_node_t *c;
- int fd, ret;
+ const sqfs_tree_node_t *c;
char *name;
+ int fd;
if (!(flags & UNPACK_QUIET)) {
- name = fstree_get_path(n);
+ name = sqfs_tree_node_get_path(n);
printf("creating %s\n", name);
free(name);
}
- switch (n->mode & S_IFMT) {
+ switch (n->inode->base.mode & S_IFMT) {
case S_IFDIR:
- if (mkdir(n->name, 0755) && errno != EEXIST) {
+ if (mkdir((const char *)n->name, 0755) && errno != EEXIST) {
fprintf(stderr, "mkdir %s: %s\n",
n->name, strerror(errno));
return -1;
}
- if (pushd(n->name))
+ if (pushd((const char *)n->name))
return -1;
- for (c = n->data.dir->children; c != NULL; c = c->next) {
+ for (c = n->children; c != NULL; c = c->next) {
if (create_node(c, flags))
return -1;
}
@@ -38,31 +38,44 @@ static int create_node(tree_node_t *n, int flags)
return -1;
break;
case S_IFLNK:
- if (symlink(n->data.slink_target, n->name)) {
+ if (symlink(n->inode->slink_target, (const char *)n->name)) {
fprintf(stderr, "ln -s %s %s: %s\n",
- n->data.slink_target, n->name,
+ n->inode->slink_target, n->name,
strerror(errno));
return -1;
}
break;
case S_IFSOCK:
case S_IFIFO:
- if (mknod(n->name, (n->mode & S_IFMT) | 0700, 0)) {
+ if (mknod((const char *)n->name,
+ (n->inode->base.mode & S_IFMT) | 0700, 0)) {
fprintf(stderr, "creating %s: %s\n",
n->name, strerror(errno));
return -1;
}
break;
case S_IFBLK:
- case S_IFCHR:
- if (mknod(n->name, n->mode & S_IFMT, n->data.devno)) {
+ case S_IFCHR: {
+ uint32_t devno;
+
+ if (n->inode->base.type == SQFS_INODE_EXT_BDEV ||
+ n->inode->base.type == SQFS_INODE_EXT_CDEV) {
+ devno = n->inode->data.dev_ext.devno;
+ } else {
+ devno = n->inode->data.dev.devno;
+ }
+
+ if (mknod((const char *)n->name, n->inode->base.mode & S_IFMT,
+ devno)) {
fprintf(stderr, "creating device %s: %s\n",
n->name, strerror(errno));
return -1;
}
break;
+ }
case S_IFREG:
- fd = open(n->name, O_WRONLY | O_CREAT | O_EXCL, 0600);
+ fd = open((const char *)n->name, O_WRONLY | O_CREAT | O_EXCL,
+ 0600);
if (fd < 0) {
fprintf(stderr, "creating %s: %s\n",
n->name, strerror(errno));
@@ -70,38 +83,99 @@ static int create_node(tree_node_t *n, int flags)
}
close(fd);
+ break;
+ default:
+ break;
+ }
- if (n->parent != NULL) {
- n->data.file->input_file = fstree_get_path(n);
- } else {
- n->data.file->input_file = strdup(n->name);
+ return 0;
+}
+
+#ifdef HAVE_SYS_XATTR_H
+static int set_xattr(sqfs_xattr_reader_t *xattr, const sqfs_tree_node_t *n)
+{
+ sqfs_xattr_value_t *value;
+ sqfs_xattr_entry_t *key;
+ sqfs_xattr_id_t desc;
+ uint32_t index;
+ size_t i;
+ int ret;
+
+ switch (n->inode->base.type) {
+ case SQFS_INODE_EXT_DIR:
+ index = n->inode->data.dir_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_FILE:
+ index = n->inode->data.file_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_SLINK:
+ index = n->inode->data.slink_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_BDEV:
+ case SQFS_INODE_EXT_CDEV:
+ index = n->inode->data.dev_ext.xattr_idx;
+ break;
+ case SQFS_INODE_EXT_FIFO:
+ case SQFS_INODE_EXT_SOCKET:
+ index = n->inode->data.ipc_ext.xattr_idx;
+ break;
+ default:
+ return 0;
+ }
+
+ if (index == 0xFFFFFFFF)
+ return 0;
+
+ if (sqfs_xattr_reader_get_desc(xattr, index, &desc)) {
+ fputs("Error resolving xattr index\n", stderr);
+ return -1;
+ }
+
+ if (sqfs_xattr_reader_seek_kv(xattr, &desc)) {
+ fputs("Error locating xattr key-value pairs\n", stderr);
+ return -1;
+ }
+
+ for (i = 0; i < desc.count; ++i) {
+ if (sqfs_xattr_reader_read_key(xattr, &key)) {
+ fputs("Error reading xattr key\n", stderr);
+ return -1;
}
- if (n->data.file->input_file == NULL) {
- perror("restoring file path");
+ if (sqfs_xattr_reader_read_value(xattr, key, &value)) {
+ fputs("Error reading xattr value\n", stderr);
+ free(key);
return -1;
}
- ret = canonicalize_name(n->data.file->input_file);
- assert(ret == 0);
- break;
- default:
- break;
+ ret = lsetxattr((const char *)n->name, (const char *)key->key,
+ value->value, value->size, 0);
+ if (ret) {
+ fprintf(stderr, "setting xattr '%s' on %s: %s\n",
+ key->key, n->name, strerror(errno));
+ }
+
+ free(key);
+ free(value);
+ if (ret)
+ return -1;
}
return 0;
}
+#endif
-static int set_attribs(fstree_t *fs, tree_node_t *n, int flags)
+static int set_attribs(sqfs_xattr_reader_t *xattr,
+ const sqfs_tree_node_t *n, int flags)
{
- tree_node_t *c;
+ const sqfs_tree_node_t *c;
- if (S_ISDIR(n->mode)) {
- if (pushd(n->name))
+ if (S_ISDIR(n->inode->base.mode)) {
+ if (pushd((const char *)n->name))
return -1;
- for (c = n->data.dir->children; c != NULL; c = c->next) {
- if (set_attribs(fs, c, flags))
+ for (c = n->children; c != NULL; c = c->next) {
+ if (set_attribs(xattr, c, flags))
return -1;
}
@@ -110,38 +184,21 @@ static int set_attribs(fstree_t *fs, tree_node_t *n, int flags)
}
#ifdef HAVE_SYS_XATTR_H
- if ((flags & UNPACK_SET_XATTR) && n->xattr != NULL) {
- size_t i, len, kidx, vidx;
- const char *key, *value;
-
- for (i = 0; i < n->xattr->num_attr; ++i) {
- kidx = n->xattr->attr[i].key_index;
- vidx = n->xattr->attr[i].value_index;
-
- key = str_table_get_string(&fs->xattr_keys, kidx);
- value = str_table_get_string(&fs->xattr_values, vidx);
- len = strlen(value);
-
- if (lsetxattr(n->name, key, value, len, 0)) {
- fprintf(stderr,
- "setting xattr '%s' on %s: %s\n",
- key, n->name, strerror(errno));
- return -1;
- }
- }
+ if ((flags & UNPACK_SET_XATTR) && xattr != NULL) {
+ if (set_xattr(xattr, n))
+ return -1;
}
-#else
- (void)fs;
#endif
if (flags & UNPACK_SET_TIMES) {
struct timespec times[2];
memset(times, 0, sizeof(times));
- times[0].tv_sec = n->mod_time;
- times[1].tv_sec = n->mod_time;
+ times[0].tv_sec = n->inode->base.mod_time;
+ times[1].tv_sec = n->inode->base.mod_time;
- if (utimensat(AT_FDCWD, n->name, times, AT_SYMLINK_NOFOLLOW)) {
+ if (utimensat(AT_FDCWD, (const char *)n->name, times,
+ AT_SYMLINK_NOFOLLOW)) {
fprintf(stderr, "setting timestamp on %s: %s\n",
n->name, strerror(errno));
return -1;
@@ -149,7 +206,7 @@ static int set_attribs(fstree_t *fs, tree_node_t *n, int flags)
}
if (flags & UNPACK_CHOWN) {
- if (fchownat(AT_FDCWD, n->name, n->uid, n->gid,
+ if (fchownat(AT_FDCWD, (const char *)n->name, n->uid, n->gid,
AT_SYMLINK_NOFOLLOW)) {
fprintf(stderr, "chown %s: %s\n",
n->name, strerror(errno));
@@ -157,8 +214,9 @@ static int set_attribs(fstree_t *fs, tree_node_t *n, int flags)
}
}
- if (flags & UNPACK_CHMOD && !S_ISLNK(n->mode)) {
- if (fchmodat(AT_FDCWD, n->name, n->mode, 0)) {
+ if (flags & UNPACK_CHMOD && !S_ISLNK(n->inode->base.mode)) {
+ if (fchmodat(AT_FDCWD, (const char *)n->name,
+ n->inode->base.mode & ~S_IFMT, 0)) {
fprintf(stderr, "chmod %s: %s\n",
n->name, strerror(errno));
return -1;
@@ -167,16 +225,16 @@ static int set_attribs(fstree_t *fs, tree_node_t *n, int flags)
return 0;
}
-int restore_fstree(tree_node_t *root, int flags)
+int restore_fstree(sqfs_tree_node_t *root, int flags)
{
- tree_node_t *n, *old_parent;
+ sqfs_tree_node_t *n, *old_parent;
/* make sure fstree_get_path() stops at this node */
old_parent = root->parent;
root->parent = NULL;
- if (S_ISDIR(root->mode)) {
- for (n = root->data.dir->children; n != NULL; n = n->next) {
+ if (S_ISDIR(root->inode->base.mode)) {
+ for (n = root->children; n != NULL; n = n->next) {
if (create_node(n, flags))
return -1;
}
@@ -189,20 +247,23 @@ int restore_fstree(tree_node_t *root, int flags)
return 0;
}
-int update_tree_attribs(fstree_t *fs, tree_node_t *root, int flags)
+int update_tree_attribs(sqfs_xattr_reader_t *xattr,
+ const sqfs_tree_node_t *root, int flags)
{
- tree_node_t *n;
+ const sqfs_tree_node_t *n;
- if ((flags & (UNPACK_CHOWN | UNPACK_CHMOD | UNPACK_SET_TIMES)) == 0)
+ if ((flags & (UNPACK_CHOWN | UNPACK_CHMOD |
+ UNPACK_SET_TIMES | UNPACK_SET_XATTR)) == 0) {
return 0;
+ }
- if (S_ISDIR(root->mode)) {
- for (n = root->data.dir->children; n != NULL; n = n->next) {
- if (set_attribs(fs, n, flags))
+ if (S_ISDIR(root->inode->base.mode)) {
+ for (n = root->children; n != NULL; n = n->next) {
+ if (set_attribs(xattr, n, flags))
return -1;
}
} else {
- if (set_attribs(fs, root, flags))
+ if (set_attribs(xattr, root, flags))
return -1;
}