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-rw-r--r--include/fstree.h69
-rw-r--r--lib/fstree/Makemodule.am2
-rw-r--r--lib/fstree/fstree.c20
-rw-r--r--lib/fstree/mknode.c1
-rw-r--r--lib/fstree/xattr.c174
-rw-r--r--lib/sqfshelper/Makemodule.am3
-rw-r--r--lib/sqfshelper/serialize_fstree.c2
-rw-r--r--lib/sqfshelper/tree_node_to_inode.c41
-rw-r--r--lib/sqfshelper/write_xattr.c278
-rw-r--r--mkfs/dirscan.c37
-rw-r--r--mkfs/mkfs.c47
-rw-r--r--mkfs/mkfs.h5
-rw-r--r--mkfs/selinux.c9
-rw-r--r--tar/tar2sqfs.c38
14 files changed, 121 insertions, 605 deletions
diff --git a/include/fstree.h b/include/fstree.h
index a60b214..b355f06 100644
--- a/include/fstree.h
+++ b/include/fstree.h
@@ -14,50 +14,13 @@
#include <stddef.h>
#include <stdio.h>
-#include "str_table.h"
+#include "sqfs/predef.h"
#include "compat.h"
-#define FSTREE_XATTR_KEY_BUCKETS 31
-#define FSTREE_XATTR_VALUE_BUCKETS 511
-
typedef struct tree_node_t tree_node_t;
typedef struct file_info_t file_info_t;
typedef struct dir_info_t dir_info_t;
typedef struct fstree_t fstree_t;
-typedef struct tree_xattr_t tree_xattr_t;
-
-/* Encapsulates a set of key-value pairs attached to a tree_node_t */
-struct tree_xattr_t {
- /* Number of key-value pairs */
- size_t num_attr;
-
- /* Total size of the array, i.e. it's capacity */
- size_t max_attr;
-
- /* Offset of the meta data block where the pairs are stored */
- sqfs_u64 block;
-
- /* Offset into a meta data block where the pairs start */
- sqfs_u32 offset;
-
- /* Number of bytes written to disk */
- sqfs_u32 size;
-
- /* Incremental index within all xattr blocks */
- size_t index;
-
- /* Back reference to the tree node this was created for */
- tree_node_t *owner;
-
- /* linked list pointer of list of attributes in @ref fstree_t */
- tree_xattr_t *next;
-
- /* Array with pairs of key-value tupples */
- struct {
- sqfs_u32 key_index;
- sqfs_u32 value_index;
- } attr[];
-};
/* Additional meta data stored in a tree_node_t for regular files. */
struct file_info_t {
@@ -90,21 +53,13 @@ struct tree_node_t {
/* For the root node, this points to an empty string. */
char *name;
- /*
- A pointer to an extended attribute array or NULL if unused.
-
- This field is not stored in-line and taken care of by the generic
- fstree cleanup code, since it is generatde after the tree already
- exists and shared across multiple nodes.
- */
- tree_xattr_t *xattr;
-
+ sqfs_u32 xattr_idx;
sqfs_u32 uid;
sqfs_u32 gid;
sqfs_u32 inode_num;
sqfs_u32 mod_time;
sqfs_u16 mode;
- sqfs_u16 pad0[3];
+ sqfs_u16 pad0;
/* SquashFS inode refernce number. 32 bit offset of the meta data
block start (relative to inode table start), shifted left by 16
@@ -130,11 +85,7 @@ struct fstree_t {
size_t block_size;
size_t inode_tbl_size;
- str_table_t xattr_keys;
- str_table_t xattr_values;
-
tree_node_t *root;
- tree_xattr_t *xattr;
/* linear array of tree nodes. inode number is array index */
tree_node_t **inode_table;
@@ -194,20 +145,6 @@ tree_node_t *fstree_add_generic(fstree_t *fs, const char *path,
const struct stat *sb, const char *extra);
/*
- Add an extended attribute key value pair to a tree node.
-
- Returns 0 on success, prints error to stderr on failure.
-*/
-int fstree_add_xattr(fstree_t *fs, tree_node_t *node,
- const char *key, const char *value);
-
-/* Recompute running index number of all xattr blocks. */
-void fstree_xattr_reindex(fstree_t *fs);
-
-/* Sort and dedupliciate xattr blocks, then recumpute the index numbers. */
-void fstree_xattr_deduplicate(fstree_t *fs);
-
-/*
Parses the file format accepted by gensquashfs and produce a file system
tree from it. File input paths are interpreted as relative to the current
working directory.
diff --git a/lib/fstree/Makemodule.am b/lib/fstree/Makemodule.am
index fe2c5ca..be5f8fc 100644
--- a/lib/fstree/Makemodule.am
+++ b/lib/fstree/Makemodule.am
@@ -2,7 +2,7 @@ libfstree_a_SOURCES = lib/fstree/fstree.c lib/fstree/fstree_from_file.c
libfstree_a_SOURCES += lib/fstree/fstree_sort.c
libfstree_a_SOURCES += lib/fstree/gen_inode_table.c lib/fstree/get_path.c
libfstree_a_SOURCES += lib/fstree/mknode.c
-libfstree_a_SOURCES += lib/fstree/add_by_path.c lib/fstree/xattr.c
+libfstree_a_SOURCES += lib/fstree/add_by_path.c
libfstree_a_SOURCES += include/fstree.h
libfstree_a_SOURCES += lib/fstree/gen_file_list.c
libfstree_a_SOURCES += lib/fstree/source_date_epoch.c
diff --git a/lib/fstree/fstree.c b/lib/fstree/fstree.c
index 357fd3d..efb6a78 100644
--- a/lib/fstree/fstree.c
+++ b/lib/fstree/fstree.c
@@ -117,20 +117,10 @@ int fstree_init(fstree_t *fs, size_t block_size, char *defaults)
if (defaults != NULL && process_defaults(&fs->defaults, defaults) != 0)
return -1;
- if (str_table_init(&fs->xattr_keys, FSTREE_XATTR_KEY_BUCKETS))
- return -1;
-
- if (str_table_init(&fs->xattr_values, FSTREE_XATTR_VALUE_BUCKETS)) {
- str_table_cleanup(&fs->xattr_keys);
- return -1;
- }
-
fs->root = fstree_mknode(NULL, "", 0, NULL, &fs->defaults);
if (fs->root == NULL) {
perror("initializing file system tree");
- str_table_cleanup(&fs->xattr_values);
- str_table_cleanup(&fs->xattr_keys);
return -1;
}
@@ -139,16 +129,6 @@ int fstree_init(fstree_t *fs, size_t block_size, char *defaults)
void fstree_cleanup(fstree_t *fs)
{
- tree_xattr_t *xattr;
-
- while (fs->xattr != NULL) {
- xattr = fs->xattr;
- fs->xattr = xattr->next;
- free(xattr);
- }
-
- str_table_cleanup(&fs->xattr_keys);
- str_table_cleanup(&fs->xattr_values);
free_recursive(fs->root);
free(fs->inode_table);
memset(fs, 0, sizeof(*fs));
diff --git a/lib/fstree/mknode.c b/lib/fstree/mknode.c
index f90bd00..6274ba7 100644
--- a/lib/fstree/mknode.c
+++ b/lib/fstree/mknode.c
@@ -39,6 +39,7 @@ tree_node_t *fstree_mknode(tree_node_t *parent, const char *name,
n->parent = parent;
}
+ n->xattr_idx = 0xFFFFFFFF;
n->uid = sb->st_uid;
n->gid = sb->st_gid;
n->mode = sb->st_mode;
diff --git a/lib/fstree/xattr.c b/lib/fstree/xattr.c
deleted file mode 100644
index 45ea8a6..0000000
--- a/lib/fstree/xattr.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * xattr.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include "fstree.h"
-#include "util.h"
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-
-static void remove_from_list(fstree_t *fs, tree_xattr_t *xattr)
-{
- tree_xattr_t *prev = NULL, *it = fs->xattr;
-
- while (it != xattr) {
- prev = it;
- it = it->next;
- }
-
- if (prev == NULL) {
- fs->xattr = xattr->next;
- } else {
- prev->next = xattr->next;
- }
-}
-
-static tree_xattr_t *grow_xattr_block(tree_xattr_t *xattr)
-{
- size_t new_size, old_size = 0, new_count = 4;
- void *new;
-
- if (xattr != NULL) {
- if (SZ_MUL_OV(xattr->max_attr, 2, &new_count))
- goto fail_ov;
- old_size = sizeof(*xattr) + sizeof(sqfs_u64) * xattr->max_attr;
- }
-
- if (SZ_MUL_OV(sizeof(sqfs_u64), new_count, &new_size) ||
- SZ_ADD_OV(sizeof(*xattr), new_size, &new_size)) {
- goto fail_ov;
- }
-
- new = realloc(xattr, new_size);
- if (new == NULL)
- goto fail;
-
- memset((char *)new + old_size, 0, new_size - old_size);
-
- xattr = new;
- xattr->max_attr = new_count;
- return xattr;
-fail_ov:
- errno = EOVERFLOW;
-fail:
- perror("adding extended attributes");
- free(xattr);
- return NULL;
-}
-
-int fstree_add_xattr(fstree_t *fs, tree_node_t *node,
- const char *key, const char *value)
-{
- size_t key_idx, value_idx;
- tree_xattr_t *xattr;
-
- if (str_table_get_index(&fs->xattr_keys, key, &key_idx))
- return -1;
-
- if (str_table_get_index(&fs->xattr_values, value, &value_idx))
- return -1;
-
- if (sizeof(size_t) > sizeof(sqfs_u32)) {
- if (key_idx > 0xFFFFFFFFUL) {
- fputs("Too many unique xattr keys\n", stderr);
- return -1;
- }
-
- if (value_idx > 0xFFFFFFFFUL) {
- fputs("Too many unique xattr values\n", stderr);
- return -1;
- }
- }
-
- xattr = node->xattr;
-
- if (xattr == NULL || xattr->max_attr == xattr->num_attr) {
- if (xattr != NULL)
- remove_from_list(fs, xattr);
-
- xattr = grow_xattr_block(xattr);
- if (xattr == NULL)
- return -1;
-
- node->xattr = xattr;
- xattr->owner = node;
- xattr->next = fs->xattr;
- fs->xattr = xattr;
- }
-
- xattr->attr[xattr->num_attr].key_index = key_idx;
- xattr->attr[xattr->num_attr].value_index = value_idx;
- xattr->num_attr += 1;
- return 0;
-}
-
-static int cmp_attr(const void *lhs, const void *rhs)
-{
- return memcmp(lhs, rhs, sizeof(((tree_xattr_t *)0)->attr[0]));
-}
-
-void fstree_xattr_reindex(fstree_t *fs)
-{
- sqfs_u32 key_idx, value_idx;
- size_t i, index = 0;
- tree_xattr_t *it;
-
- str_table_reset_ref_count(&fs->xattr_keys);
- str_table_reset_ref_count(&fs->xattr_values);
-
- for (it = fs->xattr; it != NULL; it = it->next) {
- it->index = index++;
-
- for (i = 0; i < it->num_attr; ++i) {
- key_idx = it->attr[i].key_index;
- value_idx = it->attr[i].value_index;
-
- str_table_add_ref(&fs->xattr_keys, key_idx);
- str_table_add_ref(&fs->xattr_values, value_idx);
- }
- }
-}
-
-void fstree_xattr_deduplicate(fstree_t *fs)
-{
- tree_xattr_t *it, *it1, *prev;
- int diff;
-
- for (it = fs->xattr; it != NULL; it = it->next)
- qsort(it->attr, it->num_attr, sizeof(it->attr[0]), cmp_attr);
-
- prev = NULL;
- it = fs->xattr;
-
- while (it != NULL) {
- for (it1 = fs->xattr; it1 != it; it1 = it1->next) {
- if (it1->num_attr != it->num_attr)
- continue;
-
- diff = memcmp(it1->attr, it->attr,
- it->num_attr * sizeof(it->attr[0]));
- if (diff == 0)
- break;
- }
-
- if (it1 != it) {
- prev->next = it->next;
- it->owner->xattr = it1;
-
- free(it);
- it = prev->next;
- } else {
- prev = it;
- it = it->next;
- }
- }
-
- fstree_xattr_reindex(fs);
-}
diff --git a/lib/sqfshelper/Makemodule.am b/lib/sqfshelper/Makemodule.am
index 896605a..2ae1ac2 100644
--- a/lib/sqfshelper/Makemodule.am
+++ b/lib/sqfshelper/Makemodule.am
@@ -6,8 +6,7 @@ libsqfshelper_a_SOURCES += lib/sqfshelper/print_version.c
libsqfshelper_a_SOURCES += lib/sqfshelper/inode_stat.c
libsqfshelper_a_SOURCES += lib/sqfshelper/data_reader_dump.c
libsqfshelper_a_SOURCES += lib/sqfshelper/compress.c lib/sqfshelper/comp_opt.c
-libsqfshelper_a_SOURCES += lib/sqfshelper/data_writer.c
-libsqfshelper_a_SOURCES += lib/sqfshelper/write_xattr.c include/highlevel.h
+libsqfshelper_a_SOURCES += lib/sqfshelper/data_writer.c include/highlevel.h
libsqfshelper_a_SOURCES += lib/sqfshelper/get_path.c lib/sqfshelper/io_stdin.c
noinst_LIBRARIES += libsqfshelper.a
diff --git a/lib/sqfshelper/serialize_fstree.c b/lib/sqfshelper/serialize_fstree.c
index 2ec7daa..9a122ac 100644
--- a/lib/sqfshelper/serialize_fstree.c
+++ b/lib/sqfshelper/serialize_fstree.c
@@ -36,7 +36,7 @@ static sqfs_inode_generic_t *write_dir_entries(sqfs_dir_writer_t *dirw,
if (sqfs_dir_writer_end(dirw))
return NULL;
- xattr = (node->xattr == NULL) ? 0xFFFFFFFF : node->xattr->index;
+ xattr = node->xattr_idx;
parent_inode = (node->parent == NULL) ? 1 : node->parent->inode_num;
inode = sqfs_dir_writer_create_inode(dirw, 0, xattr, parent_inode);
diff --git a/lib/sqfshelper/tree_node_to_inode.c b/lib/sqfshelper/tree_node_to_inode.c
index d75e959..bafaaf7 100644
--- a/lib/sqfshelper/tree_node_to_inode.c
+++ b/lib/sqfshelper/tree_node_to_inode.c
@@ -18,26 +18,11 @@
static int get_type(tree_node_t *node)
{
switch (node->mode & S_IFMT) {
- case S_IFSOCK:
- if (node->xattr != NULL)
- return SQFS_INODE_EXT_SOCKET;
- return SQFS_INODE_SOCKET;
- case S_IFIFO:
- if (node->xattr != NULL)
- return SQFS_INODE_EXT_FIFO;
- return SQFS_INODE_FIFO;
- case S_IFLNK:
- if (node->xattr != NULL)
- return SQFS_INODE_EXT_SLINK;
- return SQFS_INODE_SLINK;
- case S_IFBLK:
- if (node->xattr != NULL)
- return SQFS_INODE_EXT_BDEV;
- return SQFS_INODE_BDEV;
- case S_IFCHR:
- if (node->xattr != NULL)
- return SQFS_INODE_EXT_CDEV;
- return SQFS_INODE_CDEV;
+ case S_IFSOCK: return SQFS_INODE_SOCKET;
+ case S_IFIFO: return SQFS_INODE_FIFO;
+ case S_IFLNK: return SQFS_INODE_SLINK;
+ case S_IFBLK: return SQFS_INODE_BDEV;
+ case S_IFCHR: return SQFS_INODE_CDEV;
}
assert(0);
}
@@ -47,7 +32,6 @@ sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
{
sqfs_inode_generic_t *inode;
sqfs_u16 uid_idx, gid_idx;
- sqfs_u32 xattr = 0xFFFFFFFF;
size_t extra = 0;
if (S_ISREG(node->mode)) {
@@ -78,8 +62,8 @@ sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
if (sqfs_id_table_id_to_index(idtbl, node->gid, &gid_idx))
goto fail;
- if (node->xattr != NULL)
- xattr = node->xattr->index;
+ if (node->xattr_idx != 0xFFFFFFFF)
+ sqfs_inode_make_extended(inode);
inode->base.mode = node->mode;
inode->base.uid_idx = uid_idx;
@@ -95,7 +79,7 @@ sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
case SQFS_INODE_EXT_FIFO:
case SQFS_INODE_EXT_SOCKET:
inode->data.ipc_ext.nlink = 1;
- inode->data.ipc_ext.xattr_idx = xattr;
+ inode->data.ipc_ext.xattr_idx = node->xattr_idx;
break;
case SQFS_INODE_SLINK:
inode->data.slink.nlink = 1;
@@ -104,7 +88,7 @@ sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
case SQFS_INODE_EXT_SLINK:
inode->data.slink_ext.nlink = 1;
inode->data.slink_ext.target_size = extra;
- inode->data.slink_ext.xattr_idx = xattr;
+ inode->data.slink_ext.xattr_idx = node->xattr_idx;
break;
case SQFS_INODE_BDEV:
case SQFS_INODE_CDEV:
@@ -115,15 +99,12 @@ sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
case SQFS_INODE_EXT_CDEV:
inode->data.dev_ext.nlink = 1;
inode->data.dev_ext.devno = node->data.devno;
- inode->data.dev_ext.xattr_idx = xattr;
+ inode->data.dev_ext.xattr_idx = node->xattr_idx;
break;
case SQFS_INODE_FILE:
- if (xattr != 0xFFFFFFFF) {
- sqfs_inode_make_extended(inode);
- inode->data.file_ext.xattr_idx = xattr;
- }
break;
case SQFS_INODE_EXT_FILE:
+ inode->data.file_ext.xattr_idx = node->xattr_idx;
break;
default:
goto fail;
diff --git a/lib/sqfshelper/write_xattr.c b/lib/sqfshelper/write_xattr.c
deleted file mode 100644
index a3f5170..0000000
--- a/lib/sqfshelper/write_xattr.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * write_xattr.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include "sqfs/meta_writer.h"
-#include "sqfs/xattr.h"
-#include "highlevel.h"
-#include "util.h"
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-
-static int write_key(sqfs_meta_writer_t *mw, const char *key,
- tree_xattr_t *xattr, bool value_is_ool)
-{
- sqfs_xattr_entry_t kent;
- int type;
-
- type = sqfs_get_xattr_prefix_id(key);
- if (type < 0) {
- fprintf(stderr, "unsupported xattr key '%s'\n", key);
- return -1;
- }
-
- key = strchr(key, '.');
- assert(key != NULL);
- ++key;
-
- if (value_is_ool)
- type |= SQFS_XATTR_FLAG_OOL;
-
- kent.type = htole16(type);
- kent.size = htole16(strlen(key));
-
- if (sqfs_meta_writer_append(mw, &kent, sizeof(kent)))
- return -1;
- if (sqfs_meta_writer_append(mw, key, strlen(key)))
- return -1;
-
- xattr->size += sizeof(sqfs_xattr_entry_t) + strlen(key);
- return 0;
-}
-
-static int write_value(sqfs_meta_writer_t *mw, const char *value,
- tree_xattr_t *xattr, sqfs_u64 *value_ref_out)
-{
- sqfs_xattr_value_t vent;
- sqfs_u32 offset;
- sqfs_u64 block;
-
- sqfs_meta_writer_get_position(mw, &block, &offset);
- *value_ref_out = (block << 16) | (offset & 0xFFFF);
-
- vent.size = htole32(strlen(value));
-
- if (sqfs_meta_writer_append(mw, &vent, sizeof(vent)))
- return -1;
-
- if (sqfs_meta_writer_append(mw, value, strlen(value)))
- return -1;
-
- xattr->size += sizeof(vent) + strlen(value);
- return 0;
-}
-
-static int write_value_ool(sqfs_meta_writer_t *mw, sqfs_u64 location,
- tree_xattr_t *xattr)
-{
- sqfs_xattr_value_t vent;
- sqfs_u64 ref;
-
- vent.size = htole32(sizeof(location));
- if (sqfs_meta_writer_append(mw, &vent, sizeof(vent)))
- return -1;
-
- ref = htole64(location);
- if (sqfs_meta_writer_append(mw, &ref, sizeof(ref)))
- return -1;
-
- xattr->size += sizeof(vent) + sizeof(ref);
- return 0;
-}
-
-static bool should_store_ool(fstree_t *fs, const char *value, size_t index)
-{
- size_t refcount;
-
- refcount = str_table_get_ref_count(&fs->xattr_values, index);
- if (refcount < 2)
- return false;
-
- /*
- Storing in line needs this many bytes: refcount * len
-
- Storing out-of-line needs this many: len + (refcount - 1) * 8
-
- Out-of-line prefereable if:
- refcount * len > len + (refcount - 1) * 8
- => refcount * len - len > (refcount - 1) * 8
- => (refcount - 1) * len > (refcount - 1) * 8
- => len > 8
-
- Note that this only holds iff refcount - 1 != 0, i.e. refcount > 1,
- otherwise we would be dividing by 0 in the 3rd step.
- */
- return strlen(value) > sizeof(sqfs_u64);
-}
-
-static int write_kv_pairs(fstree_t *fs, sqfs_meta_writer_t *mw,
- tree_xattr_t *xattr, sqfs_u64 *ool_locations)
-{
- sqfs_u32 key_idx, val_idx;
- const char *key, *value;
- sqfs_u64 ref;
- size_t i;
-
- for (i = 0; i < xattr->num_attr; ++i) {
- key_idx = xattr->attr[i].key_index;
- val_idx = xattr->attr[i].value_index;
-
- key = str_table_get_string(&fs->xattr_keys, key_idx);
- value = str_table_get_string(&fs->xattr_values, val_idx);
-
- if (ool_locations[val_idx] == 0xFFFFFFFFFFFFFFFF) {
- if (write_key(mw, key, xattr, false))
- return -1;
-
- if (write_value(mw, value, xattr, &ref))
- return -1;
-
- if (should_store_ool(fs, value, val_idx))
- ool_locations[val_idx] = ref;
- } else {
- if (write_key(mw, key, xattr, true))
- return -1;
-
- if (write_value_ool(mw, ool_locations[val_idx], xattr))
- return -1;
- }
- }
-
- return 0;
-}
-
-static sqfs_u64 *create_ool_locations_table(fstree_t *fs)
-{
- sqfs_u64 *table;
- size_t i;
-
- table = alloc_array(sizeof(sqfs_u64), fs->xattr_values.num_strings);
-
- if (table == NULL) {
- perror("allocating Xattr OOL locations table");
- return NULL;
- }
-
- for (i = 0; i < fs->xattr_values.num_strings; ++i) {
- table[i] = 0xFFFFFFFFFFFFFFFFUL;
- }
-
- return table;
-}
-
-int write_xattr(sqfs_file_t *file, fstree_t *fs, sqfs_super_t *super,
- sqfs_compressor_t *cmp)
-{
- sqfs_u64 kv_start, id_start, block, off, *tbl, *ool_locations;
- size_t i = 0, count = 0, blocks;
- sqfs_xattr_id_table_t idtbl;
- sqfs_xattr_id_t id_ent;
- sqfs_meta_writer_t *mw;
- tree_xattr_t *it;
- sqfs_u32 offset;
-
- if (fs->xattr == NULL)
- return 0;
-
- ool_locations = create_ool_locations_table(fs);
- if (ool_locations == NULL)
- return -1;
-
- mw = sqfs_meta_writer_create(file, cmp, 0);
- if (mw == NULL)
- goto fail_ool;
-
- /* write xattr key-value pairs */
- kv_start = file->get_size(file);
-
- for (it = fs->xattr; it != NULL; it = it->next) {
- sqfs_meta_writer_get_position(mw, &it->block, &it->offset);
- it->size = 0;
-
- if (write_kv_pairs(fs, mw, it, ool_locations))
- goto fail_mw;
-
- ++count;
- }
-
- if (sqfs_meta_writer_flush(mw))
- goto fail_mw;
-
- sqfs_meta_writer_reset(mw);
-
- /* allocate location table */
- blocks = (count * sizeof(id_ent)) / SQFS_META_BLOCK_SIZE;
-
- if ((count * sizeof(id_ent)) % SQFS_META_BLOCK_SIZE)
- ++blocks;
-
- tbl = alloc_array(sizeof(sqfs_u64), blocks);
-
- if (tbl == NULL) {
- perror("generating xattr ID table");
- goto fail_mw;
- }
-
- /* write ID table referring to key value pairs, record offsets */
- id_start = 0;
- off = file->get_size(file);
- tbl[i++] = htole64(off);
-
- for (it = fs->xattr; it != NULL; it = it->next) {
- id_ent.xattr = htole64((it->block << 16) | it->offset);
- id_ent.count = htole32(it->num_attr);
- id_ent.size = htole32(it->size);
-
- if (sqfs_meta_writer_append(mw, &id_ent, sizeof(id_ent)))
- goto fail_tbl;
-
- sqfs_meta_writer_get_position(mw, &block, &offset);
-
- if (block != id_start) {
- id_start = block;
- tbl[i++] = htole64(off + id_start);
- }
- }
-
- if (sqfs_meta_writer_flush(mw))
- goto fail_tbl;
-
- /* write offset table */
- idtbl.xattr_table_start = htole64(kv_start);
- idtbl.xattr_ids = htole32(count);
- idtbl.unused = 0;
-
- super->xattr_id_table_start = file->get_size(file);
- super->flags &= ~SQFS_FLAG_NO_XATTRS;
-
- if (file->write_at(file, super->xattr_id_table_start,
- &idtbl, sizeof(idtbl))) {
- perror("writing xattr ID table");
- goto fail_tbl;
- }
-
- if (file->write_at(file, super->xattr_id_table_start + sizeof(idtbl),
- tbl, sizeof(tbl[0]) * blocks)) {
- perror("writing xattr ID table");
- goto fail_tbl;
- }
-
- free(tbl);
- sqfs_meta_writer_destroy(mw);
- free(ool_locations);
- return 0;
-fail_tbl:
- free(tbl);
-fail_mw:
- sqfs_meta_writer_destroy(mw);
-fail_ool:
- free(ool_locations);
- return -1;
-}
diff --git a/mkfs/dirscan.c b/mkfs/dirscan.c
index 160fbc3..e33e6f7 100644
--- a/mkfs/dirscan.c
+++ b/mkfs/dirscan.c
@@ -40,7 +40,7 @@ fail:
}
#ifdef HAVE_SYS_XATTR_H
-static int populate_xattr(fstree_t *fs, tree_node_t *node)
+static int populate_xattr(sqfs_xattr_writer_t *xwr, tree_node_t *node)
{
char *key, *value = NULL, *buffer = NULL;
ssize_t buflen, vallen, keylen;
@@ -74,7 +74,7 @@ static int populate_xattr(fstree_t *fs, tree_node_t *node)
goto fail;
if (vallen > 0) {
- value = alloc_string(vallen);
+ value = calloc(1, vallen);
if (value == NULL) {
perror("xattr value buffer");
goto fail;
@@ -86,9 +86,11 @@ static int populate_xattr(fstree_t *fs, tree_node_t *node)
goto fail;
}
- value[vallen] = 0;
- if (fstree_add_xattr(fs, node, key, value))
+ if (sqfs_xattr_writer_add(xwr, key, value, vallen)) {
+ fputs("Error storing xattr key-value pair\n",
+ stderr);
goto fail;
+ }
free(value);
value = NULL;
@@ -109,7 +111,8 @@ fail:
#endif
static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
- void *selinux_handle, unsigned int flags)
+ void *selinux_handle, sqfs_xattr_writer_t *xwr,
+ unsigned int flags)
{
char *extra = NULL, *path;
struct dirent *ent;
@@ -171,9 +174,14 @@ static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
goto fail;
}
+ if (sqfs_xattr_writer_begin(xwr)) {
+ fputs("error recoding xattr key-value pairs\n", stderr);
+ return -1;
+ }
+
#ifdef HAVE_SYS_XATTR_H
if (flags & DIR_SCAN_READ_XATTR) {
- if (populate_xattr(fs, n))
+ if (populate_xattr(xwr, n))
goto fail;
}
#endif
@@ -185,7 +193,8 @@ static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
goto fail;
}
- if (selinux_relable_node(selinux_handle, fs, n, path)) {
+ if (selinux_relable_node(selinux_handle, xwr,
+ n, path)) {
free(path);
goto fail;
}
@@ -193,6 +202,11 @@ static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
free(path);
}
+ if (sqfs_xattr_writer_end(xwr, &n->xattr_idx)) {
+ fputs("error generating xattr index\n", stderr);
+ return -1;
+ }
+
free(extra);
extra = NULL;
}
@@ -204,8 +218,10 @@ static int populate_dir(fstree_t *fs, tree_node_t *root, dev_t devstart,
if (pushd(n->name))
return -1;
- if (populate_dir(fs, n, devstart, selinux_handle, flags))
+ if (populate_dir(fs, n, devstart, selinux_handle,
+ xwr, flags)) {
return -1;
+ }
if (popd())
return -1;
@@ -222,7 +238,7 @@ fail:
}
int fstree_from_dir(fstree_t *fs, const char *path, void *selinux_handle,
- unsigned int flags)
+ sqfs_xattr_writer_t *xwr, unsigned int flags)
{
struct stat sb;
int ret;
@@ -235,7 +251,8 @@ int fstree_from_dir(fstree_t *fs, const char *path, void *selinux_handle,
if (pushd(path))
return -1;
- ret = populate_dir(fs, fs->root, sb.st_dev, selinux_handle, flags);
+ ret = populate_dir(fs, fs->root, sb.st_dev, selinux_handle,
+ xwr, flags);
if (popd())
ret = -1;
diff --git a/mkfs/mkfs.c b/mkfs/mkfs.c
index c3a4e73..2facc51 100644
--- a/mkfs/mkfs.c
+++ b/mkfs/mkfs.c
@@ -89,7 +89,8 @@ static int pack_files(sqfs_data_writer_t *data, fstree_t *fs,
return restore_working_dir(opt);
}
-static int relabel_tree_dfs(fstree_t *fs, tree_node_t *n, void *selinux_handle)
+static int relabel_tree_dfs(sqfs_xattr_writer_t *xwr, tree_node_t *n,
+ void *selinux_handle)
{
char *path = fstree_get_path(n);
@@ -98,16 +99,26 @@ static int relabel_tree_dfs(fstree_t *fs, tree_node_t *n, void *selinux_handle)
return -1;
}
- if (selinux_relable_node(selinux_handle, fs, n, path)) {
+ if (sqfs_xattr_writer_begin(xwr)) {
+ fputs("error recoding xattr key-value pairs\n", stderr);
+ return -1;
+ }
+
+ if (selinux_relable_node(selinux_handle, xwr, n, path)) {
free(path);
return -1;
}
+ if (sqfs_xattr_writer_end(xwr, &n->xattr_idx)) {
+ fputs("error generating xattr index\n", stderr);
+ return -1;
+ }
+
free(path);
if (S_ISDIR(n->mode)) {
for (n = n->data.dir.children; n != NULL; n = n->next) {
- if (relabel_tree_dfs(fs, n, selinux_handle))
+ if (relabel_tree_dfs(xwr, n, selinux_handle))
return -1;
}
}
@@ -115,14 +126,15 @@ static int relabel_tree_dfs(fstree_t *fs, tree_node_t *n, void *selinux_handle)
return 0;
}
-static int read_fstree(fstree_t *fs, options_t *opt, void *selinux_handle)
+static int read_fstree(fstree_t *fs, options_t *opt, sqfs_xattr_writer_t *xwr,
+ void *selinux_handle)
{
FILE *fp;
int ret;
if (opt->infile == NULL) {
return fstree_from_dir(fs, opt->packdir, selinux_handle,
- opt->dirscan_flags);
+ xwr, opt->dirscan_flags);
}
fp = fopen(opt->infile, "rb");
@@ -144,7 +156,7 @@ static int read_fstree(fstree_t *fs, options_t *opt, void *selinux_handle)
return -1;
if (ret == 0 && selinux_handle != NULL)
- ret = relabel_tree_dfs(fs, fs->root, selinux_handle);
+ ret = relabel_tree_dfs(xwr, fs->root, selinux_handle);
return ret;
}
@@ -155,6 +167,7 @@ int main(int argc, char **argv)
sqfs_compressor_config_t cfg;
data_writer_stats_t stats;
sqfs_data_writer_t *data;
+ sqfs_xattr_writer_t *xwr;
sqfs_compressor_t *cmp;
sqfs_id_table_t *idtbl;
sqfs_file_t *outfile;
@@ -197,10 +210,16 @@ int main(int argc, char **argv)
goto out_outfile;
}
- if (read_fstree(&fs, &opt, sehnd)) {
+ xwr = sqfs_xattr_writer_create();
+ if (xwr == NULL) {
+ perror("creating Xattr writer");
+ goto out_outfile;
+ }
+
+ if (read_fstree(&fs, &opt, xwr, sehnd)) {
if (sehnd != NULL)
selinux_close_context_file(sehnd);
- goto out_outfile;
+ goto out_xwr;
}
if (sehnd != NULL) {
@@ -211,18 +230,16 @@ int main(int argc, char **argv)
tree_node_sort_recursive(fs.root);
if (fstree_gen_inode_table(&fs))
- goto out_outfile;
+ goto out_xwr;
fstree_gen_file_list(&fs);
super.inode_count = fs.inode_tbl_size - 2;
- fstree_xattr_deduplicate(&fs);
-
cmp = sqfs_compressor_create(&cfg);
if (cmp == NULL) {
fputs("Error creating compressor\n", stderr);
- goto out_outfile;
+ goto out_xwr;
}
ret = cmp->write_options(cmp, outfile);
@@ -257,8 +274,10 @@ int main(int argc, char **argv)
if (sqfs_id_table_write(idtbl, outfile, &super, cmp))
goto out_data;
- if (write_xattr(outfile, &fs, &super, cmp))
+ if (sqfs_xattr_writer_flush(xwr, outfile, &super, cmp)) {
+ fputs("Error writing xattr table\n", stderr);
goto out_data;
+ }
super.bytes_used = outfile->get_size(outfile);
@@ -276,6 +295,8 @@ out_data:
sqfs_data_writer_destroy(data);
out_cmp:
cmp->destroy(cmp);
+out_xwr:
+ sqfs_xattr_writer_destroy(xwr);
out_outfile:
outfile->destroy(outfile);
out_idtbl:
diff --git a/mkfs/mkfs.h b/mkfs/mkfs.h
index 3a139a7..16dcac7 100644
--- a/mkfs/mkfs.h
+++ b/mkfs/mkfs.h
@@ -9,6 +9,7 @@
#include "config.h"
+#include "sqfs/xattr_writer.h"
#include "sqfs/meta_writer.h"
#include "sqfs/compress.h"
#include "sqfs/id_table.h"
@@ -69,12 +70,12 @@ enum {
void process_command_line(options_t *opt, int argc, char **argv);
int fstree_from_dir(fstree_t *fs, const char *path, void *selinux_handle,
- unsigned int flags);
+ sqfs_xattr_writer_t *xwr, unsigned int flags);
void *selinux_open_context_file(const char *filename);
-int selinux_relable_node(void *sehnd, fstree_t *fs,
+int selinux_relable_node(void *sehnd, sqfs_xattr_writer_t *xwr,
tree_node_t *node, const char *path);
void selinux_close_context_file(void *sehnd);
diff --git a/mkfs/selinux.c b/mkfs/selinux.c
index a4cda71..d5de9a8 100644
--- a/mkfs/selinux.c
+++ b/mkfs/selinux.c
@@ -10,7 +10,7 @@
#define XATTR_VALUE_SELINUX "system_u:object_r:unlabeled_t:s0"
#ifdef WITH_SELINUX
-int selinux_relable_node(void *sehnd, fstree_t *fs,
+int selinux_relable_node(void *sehnd, sqfs_xattr_writer_t *xwr,
tree_node_t *node, const char *path)
{
char *context = NULL;
@@ -22,8 +22,13 @@ int selinux_relable_node(void *sehnd, fstree_t *fs,
goto fail;
}
- ret = fstree_add_xattr(fs, node, XATTR_NAME_SELINUX, context);
+ ret = sqfs_xattr_writer_add(xwr, XATTR_NAME_SELINUX,
+ context, strlen(context));
free(context);
+
+ if (ret)
+ fputs("Error relabeling tree node\n", stderr);
+
return ret;
fail:
perror("relabeling files");
diff --git a/tar/tar2sqfs.c b/tar/tar2sqfs.c
index 5a404f4..98c0489 100644
--- a/tar/tar2sqfs.c
+++ b/tar/tar2sqfs.c
@@ -6,6 +6,7 @@
*/
#include "config.h"
+#include "sqfs/xattr_writer.h"
#include "sqfs/compress.h"
#include "sqfs/id_table.h"
#include "sqfs/xattr.h"
@@ -109,6 +110,7 @@ static bool dont_skip = false;
static bool no_xattr = false;
static bool exportable = false;
static bool keep_time = false;
+static sqfs_xattr_writer_t *xwr = NULL;
static data_writer_stats_t stats;
static void process_args(int argc, char **argv)
@@ -278,11 +280,16 @@ static int write_file(tar_header_decoded_t *hdr, file_info_t *fi,
filesize : hdr->record_size);
}
-static int copy_xattr(fstree_t *fs, tree_node_t *node,
+static int copy_xattr(sqfs_xattr_writer_t *xwr, tree_node_t *node,
tar_header_decoded_t *hdr)
{
tar_xattr_t *xattr;
+ if (sqfs_xattr_writer_begin(xwr)) {
+ fputs("Error beginning xattr block\n", stderr);
+ return -1;
+ }
+
for (xattr = hdr->xattr; xattr != NULL; xattr = xattr->next) {
if (!sqfs_has_xattr(xattr->key)) {
if (dont_skip) {
@@ -296,8 +303,17 @@ static int copy_xattr(fstree_t *fs, tree_node_t *node,
continue;
}
- if (fstree_add_xattr(fs, node, xattr->key, xattr->value))
+ if (sqfs_xattr_writer_add(xwr, xattr->key, xattr->value,
+ strlen(xattr->value))) {
+ fputs("Error converting xattr key-value pair\n",
+ stderr);
return -1;
+ }
+ }
+
+ if (sqfs_xattr_writer_end(xwr, &node->xattr_idx)) {
+ fputs("Error completing xattr block\n", stderr);
+ return -1;
}
return 0;
@@ -320,7 +336,7 @@ static int create_node_and_repack_data(tar_header_decoded_t *hdr, fstree_t *fs,
printf("Packing %s\n", hdr->name);
if (!no_xattr) {
- if (copy_xattr(fs, node, hdr))
+ if (copy_xattr(xwr, node, hdr))
return -1;
}
@@ -465,6 +481,14 @@ int main(int argc, char **argv)
if (idtbl == NULL)
goto out_data;
+ if (!no_xattr) {
+ xwr = sqfs_xattr_writer_create();
+ if (xwr == NULL) {
+ perror("creating xattr writer");
+ goto out;
+ }
+ }
+
if (process_tar_ball(&fs, data))
goto out;
@@ -477,8 +501,6 @@ int main(int argc, char **argv)
super.inode_count = fs.inode_tbl_size - 2;
- fstree_xattr_deduplicate(&fs);
-
if (sqfs_serialize_fstree(outfile, &super, &fs, cmp, idtbl))
goto out;
@@ -493,8 +515,10 @@ int main(int argc, char **argv)
if (sqfs_id_table_write(idtbl, outfile, &super, cmp))
goto out;
- if (write_xattr(outfile, &fs, &super, cmp))
+ if (sqfs_xattr_writer_flush(xwr, outfile, &super, cmp)) {
+ fputs("Error writing xattr table\n", stderr);
goto out;
+ }
super.bytes_used = outfile->get_size(outfile);
@@ -509,6 +533,8 @@ int main(int argc, char **argv)
status = EXIT_SUCCESS;
out:
+ if (xwr != NULL)
+ sqfs_xattr_writer_destroy(xwr);
sqfs_id_table_destroy(idtbl);
out_data:
sqfs_data_writer_destroy(data);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 22:39:25 +0000