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-rw-r--r--lib/io/src/dir_entry.c (renamed from lib/io/src/xattr.c)47
-rw-r--r--lib/io/src/unix/dir_iterator.c28
2 files changed, 51 insertions, 24 deletions
diff --git a/lib/io/src/xattr.c b/lib/io/src/dir_entry.c
index 85b7e53..b7f38f5 100644
--- a/lib/io/src/xattr.c
+++ b/lib/io/src/dir_entry.c
@@ -1,28 +1,61 @@
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
- * xattr.c
+ * dir_entry.c
*
* Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at>
*/
-#include "io/xattr.h"
+#include "io/dir_entry.h"
+#include "compat.h"
#include <stdlib.h>
#include <string.h>
+dir_entry_t *dir_entry_create(const char *name)
+{
+ size_t len, name_len;
+ dir_entry_t *out;
+
+ name_len = strlen(name);
+ if (SZ_ADD_OV(name_len, 1, &name_len))
+ return NULL;
+ if (SZ_ADD_OV(sizeof(*out), name_len, &len))
+ return NULL;
+
+ out = calloc(1, len);
+ if (out == NULL)
+ return NULL;
+
+ memcpy(out->name, name, name_len);
+ return out;
+}
+
dir_entry_xattr_t *dir_entry_xattr_create(const char *key, const sqfs_u8 *value,
size_t value_len)
{
- size_t key_len = strlen(key);
- dir_entry_xattr_t *out = calloc(1, sizeof(*out) + key_len + 1 +
- value_len + 1);
+ dir_entry_xattr_t *out;
+ size_t len, key_len;
+
+ /* key_ley = strlen(key) + 1 */
+ key_len = strlen(key);
+ if (SZ_ADD_OV(key_len, 1, &key_len))
+ return NULL;
+
+ /* len = key_len + value_len + 1 + sizeof(*out) */
+ if (SZ_ADD_OV(key_len, value_len, &len))
+ return NULL;
+ if (SZ_ADD_OV(len, 1, &len))
+ return NULL;
+ if (SZ_ADD_OV(len, sizeof(*out), &len))
+ return NULL;
+ out = calloc(1, len);
if (out != NULL) {
out->key = out->data;
- out->value = (sqfs_u8 *)(out->data + key_len + 1);
+ out->value = (sqfs_u8 *)out->data + key_len;
+ out->value_len = value_len;
memcpy(out->key, key, key_len);
memcpy(out->value, value, value_len);
- out->value_len = value_len;
}
return out;
diff --git a/lib/io/src/unix/dir_iterator.c b/lib/io/src/unix/dir_iterator.c
index 7154ec9..afbf0c0 100644
--- a/lib/io/src/unix/dir_iterator.c
+++ b/lib/io/src/unix/dir_iterator.c
@@ -76,8 +76,6 @@ static int dir_read_link(dir_iterator_t *base, char **out)
static int dir_next(dir_iterator_t *base, dir_entry_t **out)
{
unix_dir_iterator_t *it = (unix_dir_iterator_t *)base;
- dir_entry_t *decoded;
- size_t len;
*out = NULL;
if (it->state != 0)
@@ -102,29 +100,25 @@ static int dir_next(dir_iterator_t *base, dir_entry_t **out)
return it->state;
}
- len = strlen(it->ent->d_name);
-
- decoded = alloc_flex(sizeof(*decoded), 1, len + 1);
- if (decoded == NULL) {
+ *out = dir_entry_create(it->ent->d_name);
+ if ((*out) == NULL) {
it->state = SQFS_ERROR_ALLOC;
return it->state;
}
- memcpy(decoded->name, it->ent->d_name, len);
- decoded->mtime = it->sb.st_mtime;
- decoded->dev = it->sb.st_dev;
- decoded->rdev = it->sb.st_rdev;
- decoded->uid = it->sb.st_uid;
- decoded->gid = it->sb.st_gid;
- decoded->mode = it->sb.st_mode;
+ (*out)->mtime = it->sb.st_mtime;
+ (*out)->dev = it->sb.st_dev;
+ (*out)->rdev = it->sb.st_rdev;
+ (*out)->uid = it->sb.st_uid;
+ (*out)->gid = it->sb.st_gid;
+ (*out)->mode = it->sb.st_mode;
if (S_ISREG(it->sb.st_mode))
- decoded->size = it->sb.st_size;
+ (*out)->size = it->sb.st_size;
- if (decoded->dev != it->device)
- decoded->flags |= DIR_ENTRY_FLAG_MOUNT_POINT;
+ if ((*out)->dev != it->device)
+ (*out)->flags |= DIR_ENTRY_FLAG_MOUNT_POINT;
- *out = decoded;
return it->state;
}