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-rw-r--r--source3/include/smb_macros.h18
-rw-r--r--source3/lib/talloc/talloc.c89
-rw-r--r--source3/lib/talloc/talloc.h16
-rw-r--r--source3/lib/util.c99
-rw-r--r--source3/libaddns/dns.h23
-rw-r--r--source3/rpc_parse/parse_prs.c2
6 files changed, 125 insertions, 122 deletions
diff --git a/source3/include/smb_macros.h b/source3/include/smb_macros.h
index 08766a1d78..afe7c1a477 100644
--- a/source3/include/smb_macros.h
+++ b/source3/include/smb_macros.h
@@ -271,19 +271,19 @@ copy an IP address from one buffer to another
/* The new talloc is paranoid malloc checker safe. */
-#define TALLOC(ctx, size) talloc_strict(ctx, size, __location__)
-#define TALLOC_P(ctx, type) (type *)talloc_strict(ctx, sizeof(type), #type)
-#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_strict(ctx, sizeof(type), count, #type)
-#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_strict(ctx, ptr, size, __location__)
-#define TALLOC_ZERO(ctx, size) _talloc_zero_strict(ctx, size, __location__)
-#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_strict(ctx, sizeof(type), #type)
-#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_strict(ctx, sizeof(type), count, #type)
+#define TALLOC(ctx, size) talloc_zeronull(ctx, size, __location__)
+#define TALLOC_P(ctx, type) (type *)talloc_zeronull(ctx, sizeof(type), #type)
+#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_zeronull(ctx, sizeof(type), count, #type)
+#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_zeronull(ctx, ptr, size, __location__)
+#define TALLOC_ZERO(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
+#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_zeronull(ctx, sizeof(type), #type)
+#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_zeronull(ctx, sizeof(type), count, #type)
#define TALLOC_REALLOC(ctx, ptr, count) _talloc_realloc(ctx, ptr, count, __location__)
#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)_talloc_realloc_array(ctx, ptr, sizeof(type), count, #type)
#define talloc_destroy(ctx) talloc_free(ctx)
#define TALLOC_FREE(ctx) do { if ((ctx) != NULL) {talloc_free(ctx); ctx=NULL;} } while(0)
-#define TALLOC_SIZE(ctx, size) talloc_strict(ctx, size, __location__)
-#define TALLOC_ZERO_SIZE(ctx, size) talloc_zero_size_strict(ctx, size)
+#define TALLOC_SIZE(ctx, size) talloc_zeronull(ctx, size, __location__)
+#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
/* only define PARANOID_MALLOC_CHECKER with --enable-developer and not compiling
the smbmount utils */
diff --git a/source3/lib/talloc/talloc.c b/source3/lib/talloc/talloc.c
index 8f7906d0d8..b2b00d8c65 100644
--- a/source3/lib/talloc/talloc.c
+++ b/source3/lib/talloc/talloc.c
@@ -1086,29 +1086,6 @@ void *_talloc_zero(const void *ctx, size_t size, const char *name)
return p;
}
-
-/*
- talloc and zero memory.
- Strict version - returns NULL if size is zero.
-*/
-void *_talloc_zero_strict(const void *ctx, size_t size, const char *name)
-{
- void *p;
-
- if (unlikely(size == 0)) {
- return NULL;
- }
-
- p = _talloc_named_const(ctx, size, name);
-
- if (p) {
- memset(p, '\0', size);
- }
-
- return p;
-}
-
-
/*
memdup with a talloc.
*/
@@ -1124,26 +1101,6 @@ void *_talloc_memdup(const void *t, const void *p, size_t size, const char *name
}
/*
- memdup with a talloc.
- Strict version - returns NULL if size is zero.
-*/
-void *_talloc_memdup_strict(const void *t, const void *p, size_t size, const char *name)
-{
- void *newp;
-
- if (unlikely(size == 0)) {
- return NULL;
- }
-
- newp = _talloc_named_const(t, size, name);
- if (likely(newp)) {
- memcpy(newp, p, size);
- }
-
- return newp;
-}
-
-/*
strdup with a talloc
*/
char *talloc_strdup(const void *t, const char *p)
@@ -1324,23 +1281,6 @@ void *_talloc_array(const void *ctx, size_t el_size, unsigned count, const char
}
/*
- alloc an array, checking for integer overflow in the array size.
- Strict version - returns NULL if count or el_size are zero.
-*/
-void *_talloc_array_strict(const void *ctx, size_t el_size, unsigned count, const char *name)
-{
- if (count >= MAX_TALLOC_SIZE/el_size) {
- return NULL;
- }
-
- if (el_size == 0 || count == 0) {
- return NULL;
- }
-
- return _talloc_named_const(ctx, el_size * count, name);
-}
-
-/*
alloc an zero array, checking for integer overflow in the array size
*/
void *_talloc_zero_array(const void *ctx, size_t el_size, unsigned count, const char *name)
@@ -1352,24 +1292,6 @@ void *_talloc_zero_array(const void *ctx, size_t el_size, unsigned count, const
}
/*
- alloc an zero array, checking for integer overflow in the array size
- Strict version - returns NULL if count or el_size are zero.
-*/
-void *_talloc_zero_array_strict(const void *ctx, size_t el_size, unsigned count, const char *name)
-{
- if (count >= MAX_TALLOC_SIZE/el_size) {
- return NULL;
- }
-
- if (el_size == 0 || count == 0) {
- return NULL;
- }
-
- return _talloc_zero(ctx, el_size * count, name);
-}
-
-
-/*
realloc an array, checking for integer overflow in the array size
*/
void *_talloc_realloc_array(const void *ctx, void *ptr, size_t el_size, unsigned count, const char *name)
@@ -1497,14 +1419,3 @@ int talloc_is_parent(const void *context, const void *ptr)
}
return 0;
}
-
-/*
- Talloc wrapper that returns NULL if size == 0.
-*/
-void *talloc_strict(const void *context, size_t size, const char *name)
-{
- if (unlikely(size == 0)) {
- return NULL;
- }
- return _talloc_named_const(context, size, name);
-}
diff --git a/source3/lib/talloc/talloc.h b/source3/lib/talloc/talloc.h
index 48bf4303c6..d9e7d94338 100644
--- a/source3/lib/talloc/talloc.h
+++ b/source3/lib/talloc/talloc.h
@@ -84,33 +84,22 @@ typedef void TALLOC_CTX;
/* useful macros for creating type checked pointers */
#define talloc(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
#define talloc_size(ctx, size) talloc_named_const(ctx, size, __location__)
-#define talloc_size_strict(ctx, size) talloc_strict(ctx, size, __location__)
#define talloc_ptrtype(ctx, ptr) (_TALLOC_TYPEOF(ptr))talloc_size(ctx, sizeof(*(ptr)))
#define talloc_new(ctx) talloc_named_const(ctx, 0, "talloc_new: " __location__)
#define talloc_zero(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
-/* Varient of talloc_zero that returns NULL if size is zero. */
-#define talloc_zero_strict(ctx, type) (type *)_talloc_zero_strict(ctx, sizeof(type), #type)
#define talloc_zero_size(ctx, size) _talloc_zero(ctx, size, __location__)
-#define talloc_zero_size_strict(ctx, size) _talloc_zero_strict(ctx, size, __location__)
#define talloc_zero_array(ctx, type, count) (type *)_talloc_zero_array(ctx, sizeof(type), count, #type)
-/* Varient of talloc_zero_array that returns NULL if count is zero. */
-#define talloc_zero_array_strict(ctx, type, count) (type *)_talloc_zero_array_strict(ctx, sizeof(type), count, #type)
#define talloc_array(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type)
-/* Varient of talloc_array that returns NULL if count is zero. */
-#define talloc_array_strict(ctx, type, count) (type *)_talloc_array_strict(ctx, sizeof(type), count, #type)
#define talloc_array_size(ctx, size, count) _talloc_array(ctx, size, count, __location__)
-#define talloc_array_size_strict(ctx, size, count) _talloc_array_strict(ctx, size, count, __location__)
#define talloc_array_ptrtype(ctx, ptr, count) (_TALLOC_TYPEOF(ptr))talloc_array_size(ctx, sizeof(*(ptr)), count)
#define talloc_realloc(ctx, p, type, count) (type *)_talloc_realloc_array(ctx, p, sizeof(type), count, #type)
#define talloc_realloc_size(ctx, ptr, size) _talloc_realloc(ctx, ptr, size, __location__)
#define talloc_memdup(t, p, size) _talloc_memdup(t, p, size, __location__)
-/* Varient of talloc_memdup that returns NULL if count is zero. */
-#define talloc_memdup_strict(t, p, size) _talloc_memdup_strict(t, p, size, __location__)
#define talloc_set_type(ptr, type) talloc_set_name_const(ptr, #type)
#define talloc_get_type(ptr, type) (type *)talloc_check_name(ptr, #type)
@@ -163,9 +152,7 @@ void talloc_disable_null_tracking(void);
void talloc_enable_leak_report(void);
void talloc_enable_leak_report_full(void);
void *_talloc_zero(const void *ctx, size_t size, const char *name);
-void *_talloc_zero_strict(const void *ctx, size_t size, const char *name);
void *_talloc_memdup(const void *t, const void *p, size_t size, const char *name);
-void *_talloc_memdup_strict(const void *t, const void *p, size_t size, const char *name);
char *talloc_strdup(const void *t, const char *p);
char *talloc_strndup(const void *t, const char *p, size_t n);
char *talloc_append_string(const void *t, char *orig, const char *append);
@@ -174,9 +161,7 @@ char *talloc_vasprintf_append(char *s, const char *fmt, va_list ap) PRINTF_ATTRI
char *talloc_asprintf(const void *t, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
char *talloc_asprintf_append(char *s, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
void *_talloc_array(const void *ctx, size_t el_size, unsigned count, const char *name);
-void *_talloc_array_strict(const void *ctx, size_t el_size, unsigned count, const char *name);
void *_talloc_zero_array(const void *ctx, size_t el_size, unsigned count, const char *name);
-void *_talloc_zero_array_strict(const void *ctx, size_t el_size, unsigned count, const char *name);
void *_talloc_realloc_array(const void *ctx, void *ptr, size_t el_size, unsigned count, const char *name);
void *talloc_realloc_fn(const void *context, void *ptr, size_t size);
void *talloc_autofree_context(void);
@@ -184,6 +169,5 @@ size_t talloc_get_size(const void *ctx);
void *talloc_find_parent_byname(const void *ctx, const char *name);
void talloc_show_parents(const void *context, FILE *file);
int talloc_is_parent(const void *context, const void *ptr);
-void *talloc_strict(const void *context, size_t size, const char *name);
#endif
diff --git a/source3/lib/util.c b/source3/lib/util.c
index 1e64db38fc..9a22e89fe2 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -3227,3 +3227,102 @@ int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, i
}
return IVAL(ptr,off);
}
+
+/****************************************************************
+ talloc wrapper functions that guarentee a null pointer return
+ if size == 0.
+****************************************************************/
+
+#ifndef MAX_TALLOC_SIZE
+#define MAX_TALLOC_SIZE 0x10000000
+#endif
+
+/*
+ * talloc and zero memory.
+ * - returns NULL if size is zero.
+ */
+
+void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
+{
+ void *p;
+
+ if (size == 0) {
+ return NULL;
+ }
+
+ p = talloc_named_const(ctx, size, name);
+
+ if (p) {
+ memset(p, '\0', size);
+ }
+
+ return p;
+}
+
+/*
+ * memdup with a talloc.
+ * - returns NULL if size is zero.
+ */
+
+void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
+{
+ void *newp;
+
+ if (size == 0) {
+ return NULL;
+ }
+
+ newp = talloc_named_const(t, size, name);
+ if (newp) {
+ memcpy(newp, p, size);
+ }
+
+ return newp;
+}
+
+/*
+ * alloc an array, checking for integer overflow in the array size.
+ * - returns NULL if count or el_size are zero.
+ */
+
+void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
+{
+ if (count >= MAX_TALLOC_SIZE/el_size) {
+ return NULL;
+ }
+
+ if (el_size == 0 || count == 0) {
+ return NULL;
+ }
+
+ return talloc_named_const(ctx, el_size * count, name);
+}
+
+/*
+ * alloc an zero array, checking for integer overflow in the array size
+ * - returns NULL if count or el_size are zero.
+ */
+
+void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
+{
+ if (count >= MAX_TALLOC_SIZE/el_size) {
+ return NULL;
+ }
+
+ if (el_size == 0 || count == 0) {
+ return NULL;
+ }
+
+ return _talloc_zero(ctx, el_size * count, name);
+}
+
+/*
+ * Talloc wrapper that returns NULL if size == 0.
+ */
+void *talloc_zeronull(const void *context, size_t size, const char *name)
+{
+ if (size == 0) {
+ return NULL;
+ }
+ return talloc_named_const(context, size, name);
+}
diff --git a/source3/libaddns/dns.h b/source3/libaddns/dns.h
index bbc4b68656..4862a23b3d 100644
--- a/source3/libaddns/dns.h
+++ b/source3/libaddns/dns.h
@@ -88,16 +88,25 @@
#include <talloc.h>
-#define TALLOC(ctx, size) talloc_strict(ctx, size, __location__)
-#define TALLOC_P(ctx, type) (type *)talloc_strict(ctx, sizeof(type), #type)
-#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_strict(ctx, sizeof(type), count, #type)
-#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_strict(ctx, ptr, size, __location__)
-#define TALLOC_ZERO(ctx, size) _talloc_zero_strict(ctx, size, __location__)
-#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_strict(ctx, sizeof(type), #type)
-#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_strict(ctx, sizeof(type), count, #type)
+void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name);
+void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name);
+void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name);
+void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name);
+void *talloc_zeronull(const void *context, size_t size, const char *name);
+
+#define TALLOC(ctx, size) talloc_zeronull(ctx, size, __location__)
+#define TALLOC_P(ctx, type) (type *)talloc_zeronull(ctx, sizeof(type), #type)
+#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_zeronull(ctx, sizeof(type), count, #type)
+#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_zeronull(ctx, ptr, size, __location__)
+#define TALLOC_ZERO(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
+#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_zeronull(ctx, sizeof(type), #type)
+#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_zeronull(ctx, sizeof(type), count, #type)
#define TALLOC_REALLOC(ctx, ptr, count) _talloc_realloc(ctx, ptr, count, __location__)
#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)_talloc_realloc_array(ctx, ptr, sizeof(type), count, #type)
+#define talloc_destroy(ctx) talloc_free(ctx)
#define TALLOC_FREE(ctx) do { if ((ctx) != NULL) {talloc_free(ctx); ctx=NULL;} } while(0)
+#define TALLOC_SIZE(ctx, size) talloc_zeronull(ctx, size, __location__)
+#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
/*******************************************************************
Type definitions for int16, int32, uint16 and uint32. Needed
diff --git a/source3/rpc_parse/parse_prs.c b/source3/rpc_parse/parse_prs.c
index bf79c44395..56fffcc26e 100644
--- a/source3/rpc_parse/parse_prs.c
+++ b/source3/rpc_parse/parse_prs.c
@@ -158,7 +158,7 @@ char *prs_alloc_mem(prs_struct *ps, size_t size, unsigned int count)
if (size && count) {
/* We can't call the type-safe version here. */
- ret = (char *)_talloc_zero_array_strict(ps->mem_ctx, size, count,
+ ret = (char *)_talloc_zero_array_zeronull(ps->mem_ctx, size, count,
"parse_prs");
}
return ret;