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-rw-r--r--lib/sqfs/Makemodule.am5
-rw-r--r--lib/sqfs/alloc.c37
-rw-r--r--lib/sqfs/block_processor/internal.h2
-rw-r--r--lib/sqfs/comp/internal.h2
-rw-r--r--lib/sqfs/str_table.c174
-rw-r--r--lib/sqfs/str_table.h51
-rw-r--r--lib/sqfs/util.h31
7 files changed, 5 insertions, 297 deletions
diff --git a/lib/sqfs/Makemodule.am b/lib/sqfs/Makemodule.am
index aada6c6..591eda2 100644
--- a/lib/sqfs/Makemodule.am
+++ b/lib/sqfs/Makemodule.am
@@ -24,8 +24,6 @@ libsquashfs_la_SOURCES += lib/sqfs/write_super.c lib/sqfs/data_reader.c
libsquashfs_la_SOURCES += lib/sqfs/block_processor/internal.h
libsquashfs_la_SOURCES += lib/sqfs/block_processor/common.c
libsquashfs_la_SOURCES += lib/sqfs/block_processor/xxhash.c
-libsquashfs_la_SOURCES += lib/sqfs/str_table.c lib/sqfs/str_table.h
-libsquashfs_la_SOURCES += lib/sqfs/alloc.c lib/sqfs/util.h
libsquashfs_la_SOURCES += lib/sqfs/frag_table.c include/sqfs/frag_table.h
libsquashfs_la_SOURCES += lib/sqfs/block_writer.c include/sqfs/block_writer.h
libsquashfs_la_CPPFLAGS = $(AM_CPPFLAGS)
@@ -36,6 +34,9 @@ libsquashfs_la_CFLAGS += $(ZSTD_CFLAGS) $(PTHREAD_CFLAGS)
libsquashfs_la_LIBADD = $(XZ_LIBS) $(ZLIB_LIBS) $(LZ4_LIBS)
libsquashfs_la_LIBADD += $(ZSTD_LIBS) $(PTHREAD_LIBS)
+# directly "import" stuff from libutil
+libsquashfs_la_SOURCES += lib/util/str_table.c lib/util/alloc.c
+
if WINDOWS
libsquashfs_la_SOURCES += lib/sqfs/win32/io_file.c
libsquashfs_la_CFLAGS += -DWINVER=0x0600 -D_WIN32_WINNT=0x0600
diff --git a/lib/sqfs/alloc.c b/lib/sqfs/alloc.c
deleted file mode 100644
index e8305d8..0000000
--- a/lib/sqfs/alloc.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * alloc.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include "util.h"
-
-#include <stdlib.h>
-#include <errno.h>
-
-void *alloc_flex(size_t base_size, size_t item_size, size_t nmemb)
-{
- size_t size;
-
- if (SZ_MUL_OV(nmemb, item_size, &size) ||
- SZ_ADD_OV(base_size, size, &size)) {
- errno = EOVERFLOW;
- return NULL;
- }
-
- return calloc(1, size);
-}
-
-void *alloc_array(size_t item_size, size_t nmemb)
-{
- size_t size;
-
- if (SZ_MUL_OV(nmemb, item_size, &size)) {
- errno = EOVERFLOW;
- return NULL;
- }
-
- return calloc(1, size);
-}
diff --git a/lib/sqfs/block_processor/internal.h b/lib/sqfs/block_processor/internal.h
index fb9c4a0..03a8296 100644
--- a/lib/sqfs/block_processor/internal.h
+++ b/lib/sqfs/block_processor/internal.h
@@ -18,7 +18,7 @@
#include "sqfs/error.h"
#include "sqfs/block.h"
#include "sqfs/io.h"
-#include "../util.h"
+#include "util.h"
#include <string.h>
#include <stdlib.h>
diff --git a/lib/sqfs/comp/internal.h b/lib/sqfs/comp/internal.h
index c687d41..7518f56 100644
--- a/lib/sqfs/comp/internal.h
+++ b/lib/sqfs/comp/internal.h
@@ -14,7 +14,7 @@
#include "sqfs/error.h"
#include "sqfs/block.h"
#include "sqfs/io.h"
-#include "../util.h"
+#include "util.h"
SQFS_INTERNAL
int sqfs_generic_write_options(sqfs_file_t *file, const void *data,
diff --git a/lib/sqfs/str_table.c b/lib/sqfs/str_table.c
deleted file mode 100644
index c0a364f..0000000
--- a/lib/sqfs/str_table.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * str_table.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "sqfs/error.h"
-#include "str_table.h"
-#include "util.h"
-
-/* R5 hash function (borrowed from reiserfs) */
-static sqfs_u32 strhash(const char *s)
-{
- const signed char *str = (const signed char *)s;
- sqfs_u32 a = 0;
-
- while (*str != '\0') {
- a += *str << 4;
- a += *str >> 4;
- a *= 11;
- str++;
- }
-
- return a;
-}
-
-static int strings_grow(str_table_t *table)
-{
- size_t newsz;
- void *new;
-
- if (table->num_strings < table->max_strings)
- return 0;
-
- newsz = table->max_strings ? (table->max_strings * 2) : 16;
- new = realloc(table->strings, sizeof(table->strings[0]) * newsz);
-
- if (new == NULL)
- return SQFS_ERROR_ALLOC;
-
- table->strings = new;
- table->max_strings = newsz;
- return 0;
-}
-
-int str_table_init(str_table_t *table, size_t size)
-{
- memset(table, 0, sizeof(*table));
-
- table->buckets = alloc_array(size, sizeof(table->buckets[0]));
- table->num_buckets = size;
-
- if (table->buckets == NULL)
- return SQFS_ERROR_ALLOC;
-
- return 0;
-}
-
-void str_table_cleanup(str_table_t *table)
-{
- str_bucket_t *bucket;
- size_t i;
-
- for (i = 0; i < table->num_buckets; ++i) {
- while (table->buckets[i] != NULL) {
- bucket = table->buckets[i];
- table->buckets[i] = bucket->next;
-
- free(bucket->str);
- free(bucket);
- }
- }
-
- free(table->buckets);
- free(table->strings);
- memset(table, 0, sizeof(*table));
-}
-
-int str_table_get_index(str_table_t *table, const char *str, size_t *idx)
-{
- str_bucket_t *bucket;
- sqfs_u32 hash;
- size_t index;
- int err;
-
- hash = strhash(str);
- index = hash % table->num_buckets;
- bucket = table->buckets[index];
-
- while (bucket != NULL) {
- if (strcmp(bucket->str, str) == 0) {
- *idx = bucket->index;
- return 0;
- }
-
- bucket = bucket->next;
- }
-
- err = strings_grow(table);
- if (err)
- return err;
-
- bucket = calloc(1, sizeof(*bucket));
- if (bucket == NULL)
- goto fail_oom;
-
- bucket->str = strdup(str);
- if (bucket->str == NULL)
- goto fail_oom;
-
- bucket->index = table->num_strings;
- table->strings[table->num_strings++] = bucket->str;
- *idx = bucket->index;
-
- bucket->next = table->buckets[index];
- table->buckets[index] = bucket;
- return 0;
-fail_oom:
- free(bucket);
- return SQFS_ERROR_ALLOC;
-}
-
-const char *str_table_get_string(str_table_t *table, size_t index)
-{
- if (index >= table->num_strings)
- return NULL;
-
- return table->strings[index];
-}
-
-static str_bucket_t *bucket_by_index(str_table_t *table, size_t index)
-{
- str_bucket_t *bucket = NULL;
- sqfs_u32 hash;
-
- if (index < table->num_strings) {
- hash = strhash(table->strings[index]);
- bucket = table->buckets[hash % table->num_buckets];
-
- while (bucket != NULL && bucket->index != index)
- bucket = bucket->next;
- }
-
- return bucket;
-}
-
-void str_table_add_ref(str_table_t *table, size_t index)
-{
- str_bucket_t *bucket = bucket_by_index(table, index);
-
- if (bucket != NULL && bucket->refcount < ~((size_t)0))
- bucket->refcount += 1;
-}
-
-void str_table_del_ref(str_table_t *table, size_t index)
-{
- str_bucket_t *bucket = bucket_by_index(table, index);
-
- if (bucket != NULL && bucket->refcount > 0)
- bucket->refcount -= 1;
-}
-
-size_t str_table_get_ref_count(str_table_t *table, size_t index)
-{
- str_bucket_t *bucket = bucket_by_index(table, index);
-
- return bucket != NULL ? bucket->refcount : 0;
-}
diff --git a/lib/sqfs/str_table.h b/lib/sqfs/str_table.h
deleted file mode 100644
index 61f8aa5..0000000
--- a/lib/sqfs/str_table.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * str_table.h
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#ifndef STR_TABLE_H
-#define STR_TABLE_H
-
-#include "sqfs/predef.h"
-
-typedef struct str_bucket_t {
- struct str_bucket_t *next;
- char *str;
- size_t index;
- size_t refcount;
-} str_bucket_t;
-
-/* Stores strings in a hash table and assigns an incremental, unique ID to
- each string. Subsequent additions return the existing ID. The ID can be
- used for (hopefully) constant time lookup of the original string. */
-typedef struct {
- str_bucket_t **buckets;
- size_t num_buckets;
-
- char **strings;
- size_t num_strings;
- size_t max_strings;
-} str_table_t;
-
-/* `size` is the number of hash table buckets to use internally. */
-SQFS_INTERNAL int str_table_init(str_table_t *table, size_t size);
-
-SQFS_INTERNAL void str_table_cleanup(str_table_t *table);
-
-/* Resolve a string to an incremental, unique ID. */
-SQFS_INTERNAL
-int str_table_get_index(str_table_t *table, const char *str, size_t *idx);
-
-/* Resolve a unique ID to the string it represents.
- Returns NULL if the ID is unknown, i.e. out of bounds. */
-SQFS_INTERNAL
-const char *str_table_get_string(str_table_t *table, size_t index);
-
-SQFS_INTERNAL void str_table_add_ref(str_table_t *table, size_t index);
-
-SQFS_INTERNAL void str_table_del_ref(str_table_t *table, size_t index);
-
-SQFS_INTERNAL size_t str_table_get_ref_count(str_table_t *table, size_t index);
-
-#endif /* STR_TABLE_H */
diff --git a/lib/sqfs/util.h b/lib/sqfs/util.h
deleted file mode 100644
index a379c0d..0000000
--- a/lib/sqfs/util.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * util.h
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#ifndef SQFS_UTIL_H
-#define SQFS_UTIL_H
-
-#include "config.h"
-#include "sqfs/predef.h"
-#include "compat.h"
-
-#include <stddef.h>
-
-/*
- Helper for allocating data structures with flexible array members.
-
- 'base_size' is the size of the struct itself, 'item_size' the size of a
- single array element and 'nmemb' the number of elements.
-
- Iternally checks for arithmetic overflows when allocating the combined thing.
- */
-SQFS_INTERNAL
-void *alloc_flex(size_t base_size, size_t item_size, size_t nmemb);
-
-/* Basically the same as calloc, but *ALWAYS* does overflow checking */
-SQFS_INTERNAL
-void *alloc_array(size_t item_size, size_t nmemb);
-
-#endif /* SQFS_UTIL_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 02:04:32 +0000