+++ /dev/null
-/*
- Samba Unix SMB/CIFS implementation.
-
- Samba trivial allocation library - new interface
-
- NOTE: Please read talloc_guide.txt for full documentation
-
- Copyright (C) Andrew Tridgell 2004
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/*
- inspired by http://swapped.cc/halloc/
-*/
-
-
-#ifdef _SAMBA_BUILD_
-#include "includes.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include "talloc.h"
-#endif
-
-/* use this to force every realloc to change the pointer, to stress test
- code that might not cope */
-#define ALWAYS_REALLOC 0
-
-
-#define MAX_TALLOC_SIZE 0x10000000
-#define TALLOC_MAGIC 0xe814ec4f
-#define TALLOC_MAGIC_FREE 0x7faebef3
-#define TALLOC_MAGIC_REFERENCE ((const char *)1)
-
-/* by default we abort when given a bad pointer (such as when talloc_free() is called
- on a pointer that came from malloc() */
-#ifndef TALLOC_ABORT
-#define TALLOC_ABORT(reason) abort()
-#endif
-
-#ifndef discard_const_p
-#define discard_const_p(type, ptr) ((type *)(ptr))
-#endif
-
-/* this null_context is only used if talloc_enable_leak_report() or
- talloc_enable_leak_report_full() is called, otherwise it remains
- NULL
-*/
-static const void *null_context;
-
-
-struct talloc_reference_handle {
- struct talloc_reference_handle *next, *prev;
- void *ptr;
-};
-
-typedef int (*talloc_destructor_t)(void *);
-
-struct talloc_chunk {
- struct talloc_chunk *next, *prev;
- struct talloc_chunk *parent, *child;
- struct talloc_reference_handle *refs;
- size_t size;
- unsigned magic;
- talloc_destructor_t destructor;
- const char *name;
-};
-
-/* panic if we get a bad magic value */
-static struct talloc_chunk *talloc_chunk_from_ptr(const void *ptr)
-{
- struct talloc_chunk *tc = discard_const_p(struct talloc_chunk, ptr)-1;
- if (tc->magic != TALLOC_MAGIC) {
- if (tc->magic == TALLOC_MAGIC_FREE) {
- TALLOC_ABORT("Bad talloc magic value - double free");
- } else {
- TALLOC_ABORT("Bad talloc magic value - unknown value");
- }
- }
-
- return tc;
-}
-
-/* hook into the front of the list */
-#define _TLIST_ADD(list, p) \
-do { \
- if (!(list)) { \
- (list) = (p); \
- (p)->next = (p)->prev = NULL; \
- } else { \
- (list)->prev = (p); \
- (p)->next = (list); \
- (p)->prev = NULL; \
- (list) = (p); \
- }\
-} while (0)
-
-/* remove an element from a list - element doesn't have to be in list. */
-#define _TLIST_REMOVE(list, p) \
-do { \
- if ((p) == (list)) { \
- (list) = (p)->next; \
- if (list) (list)->prev = NULL; \
- } else { \
- if ((p)->prev) (p)->prev->next = (p)->next; \
- if ((p)->next) (p)->next->prev = (p)->prev; \
- } \
- if ((p) && ((p) != (list))) (p)->next = (p)->prev = NULL; \
-} while (0)
-
-
-/*
- return the parent chunk of a pointer
-*/
-static struct talloc_chunk *talloc_parent_chunk(const void *ptr)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- while (tc->prev) tc=tc->prev;
- return tc->parent;
-}
-
-/*
- Allocate a bit of memory as a child of an existing pointer
-*/
-void *_talloc(const void *context, size_t size)
-{
- struct talloc_chunk *tc;
-
- if (context == NULL) {
- context = null_context;
- }
-
- if (size >= MAX_TALLOC_SIZE) {
- return NULL;
- }
-
- tc = malloc(sizeof(*tc)+size);
- if (tc == NULL) return NULL;
-
- tc->size = size;
- tc->magic = TALLOC_MAGIC;
- tc->destructor = NULL;
- tc->child = NULL;
- tc->name = NULL;
- tc->refs = NULL;
-
- if (context) {
- struct talloc_chunk *parent = talloc_chunk_from_ptr(context);
-
- tc->parent = parent;
-
- if (parent->child) {
- parent->child->parent = NULL;
- }
-
- _TLIST_ADD(parent->child, tc);
- } else {
- tc->next = tc->prev = tc->parent = NULL;
- }
-
- return (void *)(tc+1);
-}
-
-
-/*
- setup a destructor to be called on free of a pointer
- the destructor should return 0 on success, or -1 on failure.
- if the destructor fails then the free is failed, and the memory can
- be continued to be used
-*/
-void talloc_set_destructor(const void *ptr, int (*destructor)(void *))
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- tc->destructor = destructor;
-}
-
-/*
- increase the reference count on a piece of memory.
-*/
-void talloc_increase_ref_count(const void *ptr)
-{
- talloc_reference(null_context, ptr);
-}
-
-/*
- helper for talloc_reference()
-*/
-static int talloc_reference_destructor(void *ptr)
-{
- struct talloc_reference_handle *handle = ptr;
- struct talloc_chunk *tc1 = talloc_chunk_from_ptr(ptr);
- struct talloc_chunk *tc2 = talloc_chunk_from_ptr(handle->ptr);
- if (tc1->destructor != (talloc_destructor_t)-1) {
- tc1->destructor = NULL;
- }
- _TLIST_REMOVE(tc2->refs, handle);
- talloc_free(handle);
- return 0;
-}
-
-/*
- make a secondary reference to a pointer, hanging off the given context.
- the pointer remains valid until both the original caller and this given
- context are freed.
-
- the major use for this is when two different structures need to reference the
- same underlying data, and you want to be able to free the two instances separately,
- and in either order
-*/
-void *talloc_reference(const void *context, const void *ptr)
-{
- struct talloc_chunk *tc;
- struct talloc_reference_handle *handle;
- if (ptr == NULL) return NULL;
-
- tc = talloc_chunk_from_ptr(ptr);
- handle = talloc_named_const(context, sizeof(*handle), TALLOC_MAGIC_REFERENCE);
-
- if (handle == NULL) return NULL;
-
- /* note that we hang the destructor off the handle, not the
- main context as that allows the caller to still setup their
- own destructor on the context if they want to */
- talloc_set_destructor(handle, talloc_reference_destructor);
- handle->ptr = discard_const_p(void, ptr);
- _TLIST_ADD(tc->refs, handle);
- return handle->ptr;
-}
-
-/*
- remove a secondary reference to a pointer. This undo's what
- talloc_reference() has done. The context and pointer arguments
- must match those given to a talloc_reference()
-*/
-static int talloc_unreference(const void *context, const void *ptr)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- struct talloc_reference_handle *h;
-
- if (context == NULL) {
- context = null_context;
- }
-
- for (h=tc->refs;h;h=h->next) {
- struct talloc_chunk *p = talloc_parent_chunk(h);
- if ((p==NULL && context==NULL) || p+1 == context) break;
- }
- if (h == NULL) {
- return -1;
- }
-
- talloc_set_destructor(h, NULL);
- _TLIST_REMOVE(tc->refs, h);
- talloc_free(h);
- return 0;
-}
-
-/*
- remove a specific parent context from a pointer. This is a more
- controlled varient of talloc_free()
-*/
-int talloc_unlink(const void *context, void *ptr)
-{
- struct talloc_chunk *tc_p, *new_p;
- void *new_parent;
-
- if (ptr == NULL) {
- return -1;
- }
-
- if (context == NULL) {
- context = null_context;
- }
-
- if (talloc_unreference(context, ptr) == 0) {
- return 0;
- }
-
- if (context == NULL) {
- if (talloc_parent_chunk(ptr) != NULL) {
- return -1;
- }
- } else {
- if (talloc_chunk_from_ptr(context) != talloc_parent_chunk(ptr)) {
- return -1;
- }
- }
-
- tc_p = talloc_chunk_from_ptr(ptr);
-
- if (tc_p->refs == NULL) {
- return talloc_free(ptr);
- }
-
- new_p = talloc_parent_chunk(tc_p->refs);
- if (new_p) {
- new_parent = new_p+1;
- } else {
- new_parent = NULL;
- }
-
- if (talloc_unreference(new_parent, ptr) != 0) {
- return -1;
- }
-
- talloc_steal(new_parent, ptr);
-
- return 0;
-}
-
-/*
- add a name to an existing pointer - va_list version
-*/
-static void talloc_set_name_v(const void *ptr, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0);
-
-static void talloc_set_name_v(const void *ptr, const char *fmt, va_list ap)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- tc->name = talloc_vasprintf(ptr, fmt, ap);
- if (tc->name) {
- talloc_set_name_const(tc->name, ".name");
- }
-}
-
-/*
- add a name to an existing pointer
-*/
-void talloc_set_name(const void *ptr, const char *fmt, ...)
-{
- va_list ap;
- va_start(ap, fmt);
- talloc_set_name_v(ptr, fmt, ap);
- va_end(ap);
-}
-
-/*
- more efficient way to add a name to a pointer - the name must point to a
- true string constant
-*/
-void talloc_set_name_const(const void *ptr, const char *name)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- tc->name = name;
-}
-
-/*
- create a named talloc pointer. Any talloc pointer can be named, and
- talloc_named() operates just like talloc() except that it allows you
- to name the pointer.
-*/
-void *talloc_named(const void *context, size_t size, const char *fmt, ...)
-{
- va_list ap;
- void *ptr;
-
- ptr = _talloc(context, size);
- if (ptr == NULL) return NULL;
-
- va_start(ap, fmt);
- talloc_set_name_v(ptr, fmt, ap);
- va_end(ap);
-
- return ptr;
-}
-
-/*
- create a named talloc pointer. Any talloc pointer can be named, and
- talloc_named() operates just like talloc() except that it allows you
- to name the pointer.
-*/
-void *talloc_named_const(const void *context, size_t size, const char *name)
-{
- void *ptr;
-
- ptr = _talloc(context, size);
- if (ptr == NULL) {
- return NULL;
- }
-
- talloc_set_name_const(ptr, name);
-
- return ptr;
-}
-
-/*
- return the name of a talloc ptr, or "UNNAMED"
-*/
-const char *talloc_get_name(const void *ptr)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- if (tc->name == TALLOC_MAGIC_REFERENCE) {
- return ".reference";
- }
- if (tc->name) {
- return tc->name;
- }
- return "UNNAMED";
-}
-
-/*
- this is for compatibility with older versions of talloc
-*/
-void *talloc_init(const char *fmt, ...)
-{
- va_list ap;
- void *ptr;
-
- ptr = _talloc(NULL, 0);
- if (ptr == NULL) return NULL;
-
- va_start(ap, fmt);
- talloc_set_name_v(ptr, fmt, ap);
- va_end(ap);
-
- return ptr;
-}
-
-
-/*
- free a talloc pointer. This also frees all child pointers of this
- pointer recursively
-
- return 0 if the memory is actually freed, otherwise -1. The memory
- will not be freed if the ref_count is > 1 or the destructor (if
- any) returns non-zero
-*/
-int talloc_free(void *ptr)
-{
- struct talloc_chunk *tc;
-
- if (ptr == NULL) {
- return -1;
- }
-
- tc = talloc_chunk_from_ptr(ptr);
-
- if (tc->refs) {
- talloc_reference_destructor(tc->refs);
- return -1;
- }
-
- if (tc->destructor) {
- talloc_destructor_t d = tc->destructor;
- if (d == (talloc_destructor_t)-1) {
- return -1;
- }
- tc->destructor = (talloc_destructor_t)-1;
- if (d(ptr) == -1) {
- tc->destructor = d;
- return -1;
- }
- tc->destructor = NULL;
- }
-
- while (tc->child) {
- /* we need to work out who will own an abandoned child
- if it cannot be freed. In priority order, the first
- choice is owner of any remaining reference to this
- pointer, the second choice is our parent, and the
- final choice is the null context. */
- void *child = tc->child+1;
- const void *new_parent = null_context;
- if (tc->child->refs) {
- struct talloc_chunk *p = talloc_parent_chunk(tc->child->refs);
- if (p) new_parent = p+1;
- }
- if (talloc_free(child) == -1) {
- if (new_parent == null_context) {
- struct talloc_chunk *p = talloc_parent_chunk(ptr);
- if (p) new_parent = p+1;
- }
- talloc_steal(new_parent, child);
- }
- }
-
- if (tc->parent) {
- _TLIST_REMOVE(tc->parent->child, tc);
- if (tc->parent->child) {
- tc->parent->child->parent = tc->parent;
- }
- } else {
- if (tc->prev) tc->prev->next = tc->next;
- if (tc->next) tc->next->prev = tc->prev;
- }
-
- tc->magic = TALLOC_MAGIC_FREE;
-
- free(tc);
- return 0;
-}
-
-
-
-/*
- A talloc version of realloc. The context argument is only used if
- ptr is NULL
-*/
-void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *name)
-{
- struct talloc_chunk *tc;
- void *new_ptr;
-
- /* size zero is equivalent to free() */
- if (size == 0) {
- talloc_free(ptr);
- return NULL;
- }
-
- if (size >= MAX_TALLOC_SIZE) {
- return NULL;
- }
-
- /* realloc(NULL) is equavalent to malloc() */
- if (ptr == NULL) {
- return talloc_named_const(context, size, name);
- }
-
- tc = talloc_chunk_from_ptr(ptr);
-
- /* don't allow realloc on referenced pointers */
- if (tc->refs) {
- return NULL;
- }
-
- /* by resetting magic we catch users of the old memory */
- tc->magic = TALLOC_MAGIC_FREE;
-
-#if ALWAYS_REALLOC
- new_ptr = malloc(size + sizeof(*tc));
- if (new_ptr) {
- memcpy(new_ptr, tc, tc->size + sizeof(*tc));
- free(tc);
- }
-#else
- new_ptr = realloc(tc, size + sizeof(*tc));
-#endif
- if (!new_ptr) {
- tc->magic = TALLOC_MAGIC;
- return NULL;
- }
-
- tc = new_ptr;
- tc->magic = TALLOC_MAGIC;
- if (tc->parent) {
- tc->parent->child = new_ptr;
- }
-
- if (tc->prev) {
- tc->prev->next = tc;
- }
- if (tc->next) {
- tc->next->prev = tc;
- }
-
- tc->size = size;
- talloc_set_name_const(tc+1, name);
-
- return (void *)(tc+1);
-}
-
-/*
- move a lump of memory from one talloc context to another return the
- ptr on success, or NULL if it could not be transferred
-*/
-void *talloc_steal(const void *new_ctx, const void *ptr)
-{
- struct talloc_chunk *tc, *new_tc;
-
- if (!ptr) {
- return NULL;
- }
-
- if (new_ctx == NULL) {
- new_ctx = null_context;
- }
-
- tc = talloc_chunk_from_ptr(ptr);
-
- if (new_ctx == NULL) {
- if (tc->parent) {
- _TLIST_REMOVE(tc->parent->child, tc);
- if (tc->parent->child) {
- tc->parent->child->parent = tc->parent;
- }
- } else {
- if (tc->prev) tc->prev->next = tc->next;
- if (tc->next) tc->next->prev = tc->prev;
- }
-
- tc->parent = tc->next = tc->prev = NULL;
- return discard_const_p(void, ptr);
- }
-
- new_tc = talloc_chunk_from_ptr(new_ctx);
-
- if (tc == new_tc) {
- return discard_const_p(void, ptr);
- }
-
- if (tc->parent) {
- _TLIST_REMOVE(tc->parent->child, tc);
- if (tc->parent->child) {
- tc->parent->child->parent = tc->parent;
- }
- } else {
- if (tc->prev) tc->prev->next = tc->next;
- if (tc->next) tc->next->prev = tc->prev;
- }
-
- tc->parent = new_tc;
- if (new_tc->child) new_tc->child->parent = NULL;
- _TLIST_ADD(new_tc->child, tc);
-
- return discard_const_p(void, ptr);
-}
-
-/*
- return the total size of a talloc pool (subtree)
-*/
-off_t talloc_total_size(const void *ptr)
-{
- off_t total = 0;
- struct talloc_chunk *c, *tc;
-
- if (ptr == NULL) {
- ptr = null_context;
- }
- if (ptr == NULL) {
- return 0;
- }
-
- tc = talloc_chunk_from_ptr(ptr);
-
- total = tc->size;
- for (c=tc->child;c;c=c->next) {
- total += talloc_total_size(c+1);
- }
- return total;
-}
-
-/*
- return the total number of blocks in a talloc pool (subtree)
-*/
-off_t talloc_total_blocks(const void *ptr)
-{
- off_t total = 0;
- struct talloc_chunk *c, *tc = talloc_chunk_from_ptr(ptr);
-
- total++;
- for (c=tc->child;c;c=c->next) {
- total += talloc_total_blocks(c+1);
- }
- return total;
-}
-
-/*
- return the number of external references to a pointer
-*/
-static int talloc_reference_count(const void *ptr)
-{
- struct talloc_chunk *tc = talloc_chunk_from_ptr(ptr);
- struct talloc_reference_handle *h;
- int ret = 0;
-
- for (h=tc->refs;h;h=h->next) {
- ret++;
- }
- return ret;
-}
-
-/*
- report on memory usage by all children of a pointer, giving a full tree view
-*/
-static void talloc_report_depth(const void *ptr, FILE *f, int depth)
-{
- struct talloc_chunk *c, *tc = talloc_chunk_from_ptr(ptr);
-
- for (c=tc->child;c;c=c->next) {
- if (c->name == TALLOC_MAGIC_REFERENCE) {
- struct talloc_reference_handle *handle = (void *)(c+1);
- const char *name2 = talloc_get_name(handle->ptr);
- fprintf(f, "%*sreference to: %s\n", depth*4, "", name2);
- } else {
- const char *name = talloc_get_name(c+1);
- fprintf(f, "%*s%-30s contains %6lu bytes in %3lu blocks (ref %d)\n",
- depth*4, "",
- name,
- (unsigned long)talloc_total_size(c+1),
- (unsigned long)talloc_total_blocks(c+1),
- talloc_reference_count(c+1));
- talloc_report_depth(c+1, f, depth+1);
- }
- }
-
-}
-
-/*
- report on memory usage by all children of a pointer, giving a full tree view
-*/
-void talloc_report_full(const void *ptr, FILE *f)
-{
- if (ptr == NULL) {
- ptr = null_context;
- }
- if (ptr == NULL) return;
-
- fprintf(f,"full talloc report on '%s' (total %lu bytes in %lu blocks)\n",
- talloc_get_name(ptr),
- (unsigned long)talloc_total_size(ptr),
- (unsigned long)talloc_total_blocks(ptr));
-
- talloc_report_depth(ptr, f, 1);
-}
-
-/*
- report on memory usage by all children of a pointer
-*/
-void talloc_report(const void *ptr, FILE *f)
-{
- struct talloc_chunk *c, *tc;
-
- if (ptr == NULL) {
- ptr = null_context;
- }
- if (ptr == NULL) return;
-
- fprintf(f,"talloc report on '%s' (total %lu bytes in %lu blocks)\n",
- talloc_get_name(ptr),
- (unsigned long)talloc_total_size(ptr),
- (unsigned long)talloc_total_blocks(ptr));
-
- tc = talloc_chunk_from_ptr(ptr);
-
- for (c=tc->child;c;c=c->next) {
- fprintf(f, "\t%-30s contains %6lu bytes in %3lu blocks\n",
- talloc_get_name(c+1),
- (unsigned long)talloc_total_size(c+1),
- (unsigned long)talloc_total_blocks(c+1));
- }
-
-}
-
-/*
- report on any memory hanging off the null context
-*/
-static void talloc_report_null(void)
-{
- if (talloc_total_size(null_context) != 0) {
- talloc_report(null_context, stderr);
- }
-}
-
-/*
- report on any memory hanging off the null context
-*/
-static void talloc_report_null_full(void)
-{
- if (talloc_total_size(null_context) != 0) {
- talloc_report_full(null_context, stderr);
- }
-}
-
-/*
- enable leak reporting on exit
-*/
-void talloc_enable_leak_report(void)
-{
- null_context = talloc_named_const(NULL, 0, "null_context");
- atexit(talloc_report_null);
-}
-
-/*
- enable full leak reporting on exit
-*/
-void talloc_enable_leak_report_full(void)
-{
- null_context = talloc_named_const(NULL, 0, "null_context");
- atexit(talloc_report_null_full);
-}
-
-/*
- talloc and zero memory.
-*/
-void *_talloc_zero(const void *ctx, size_t size, const char *name)
-{
- void *p = talloc_named_const(ctx, size, name);
-
- if (p) {
- memset(p, '\0', size);
- }
-
- return p;
-}
-
-
-/*
- memdup with a talloc.
-*/
-void *_talloc_memdup(const void *t, const void *p, size_t size, const char *name)
-{
- void *newp = talloc_named_const(t, size, name);
-
- if (newp) {
- memcpy(newp, p, size);
- }
-
- return newp;
-}
-
-/*
- strdup with a talloc
-*/
-char *talloc_strdup(const void *t, const char *p)
-{
- char *ret;
- if (!p) {
- return NULL;
- }
- ret = talloc_memdup(t, p, strlen(p) + 1);
- if (ret) {
- talloc_set_name_const(ret, ret);
- }
- return ret;
-}
-
-/*
- strndup with a talloc
-*/
-char *talloc_strndup(const void *t, const char *p, size_t n)
-{
- size_t len;
- char *ret;
-
- for (len=0; p[len] && len<n; len++) ;
-
- ret = talloc(t, len + 1);
- if (!ret) { return NULL; }
- memcpy(ret, p, len);
- ret[len] = 0;
- return ret;
-}
-
-#ifndef VA_COPY
-#ifdef HAVE_VA_COPY
-#define VA_COPY(dest, src) __va_copy(dest, src)
-#else
-#define VA_COPY(dest, src) (dest) = (src)
-#endif
-#endif
-
-char *talloc_vasprintf(const void *t, const char *fmt, va_list ap)
-{
- int len;
- char *ret;
- va_list ap2;
-
- VA_COPY(ap2, ap);
-
- len = vsnprintf(NULL, 0, fmt, ap2);
-
- ret = talloc(t, len+1);
- if (ret) {
- VA_COPY(ap2, ap);
- vsnprintf(ret, len+1, fmt, ap2);
- talloc_set_name_const(ret, ret);
- }
-
- return ret;
-}
-
-
-/*
- Perform string formatting, and return a pointer to newly allocated
- memory holding the result, inside a memory pool.
- */
-char *talloc_asprintf(const void *t, const char *fmt, ...)
-{
- va_list ap;
- char *ret;
-
- va_start(ap, fmt);
- ret = talloc_vasprintf(t, fmt, ap);
- va_end(ap);
- return ret;
-}
-
-
-/**
- * Realloc @p s to append the formatted result of @p fmt and @p ap,
- * and return @p s, which may have moved. Good for gradually
- * accumulating output into a string buffer.
- **/
-
-static char *talloc_vasprintf_append(char *s, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0);
-
-static char *talloc_vasprintf_append(char *s, const char *fmt, va_list ap)
-{
- int len, s_len;
- va_list ap2;
-
- VA_COPY(ap2, ap);
-
- if (s) {
- s_len = strlen(s);
- } else {
- s_len = 0;
- }
- len = vsnprintf(NULL, 0, fmt, ap2);
-
- s = talloc_realloc(NULL, s, s_len + len+1);
- if (!s) return NULL;
-
- VA_COPY(ap2, ap);
-
- vsnprintf(s+s_len, len+1, fmt, ap2);
- talloc_set_name_const(s, s);
-
- return s;
-}
-
-/*
- Realloc @p s to append the formatted result of @p fmt and return @p
- s, which may have moved. Good for gradually accumulating output
- into a string buffer.
- */
-char *talloc_asprintf_append(char *s, const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- s = talloc_vasprintf_append(s, fmt, ap);
- va_end(ap);
- return s;
-}
-
-/*
- alloc an array, checking for integer overflow in the array size
-*/
-void *talloc_array(const void *ctx, size_t el_size, unsigned count, const char *name)
-{
- if (count >= MAX_TALLOC_SIZE/el_size) {
- 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)
-{
- if (count >= MAX_TALLOC_SIZE/el_size) {
- 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)
-{
- if (count >= MAX_TALLOC_SIZE/el_size) {
- return NULL;
- }
- ptr = talloc_realloc(ctx, ptr, el_size * count);
- if (ptr) {
- talloc_set_name_const(ptr, name);
- }
- return ptr;
-}
-
-/*
- a function version of talloc_realloc(), so it can be passed as a function pointer
- to libraries that want a realloc function (a realloc function encapsulates
- all the basic capabilities of an allocation library, which is why this is useful)
-*/
-void *talloc_realloc_fn(const void *context, void *ptr, size_t size)
-{
- return _talloc_realloc(context, ptr, size, NULL);
-}
git.samba.org / samba.git / commitdiff