From 1c48b5a62f73234ed26bb20f0ab345ab61cda0ab Mon Sep 17 00:00:00 2001 From: Stephen Gallagher Date: Thu, 18 Feb 2010 07:49:04 -0500 Subject: Rename server/ directory to src/ Also update BUILD.txt --- src/util/memory.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/util/memory.c (limited to 'src/util/memory.c') diff --git a/src/util/memory.c b/src/util/memory.c new file mode 100644 index 00000000..a2c8b54b --- /dev/null +++ b/src/util/memory.c @@ -0,0 +1,67 @@ +/* + Authors: + Simo Sorce + + Copyright (C) 2009 Red Hat + + 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 3 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, see . +*/ + +#include "talloc.h" +#include "util/util.h" + +/* + * sssd_mem_attach + * This function will take a non-talloc pointer and "attach" it to a talloc + * memory context. It will accept a destructor for the original pointer + * so that when the parent memory context is freed, the non-talloc + * pointer will also be freed properly. + */ + +int password_destructor(void *memctx) +{ + char *password = (char *)memctx; + int i; + + /* zero out password */ + for (i = 0; password[i]; i++) password[i] = '\0'; + + return 0; +} + +static int mem_holder_destructor(void *ptr) +{ + struct mem_holder *h; + + h = talloc_get_type(ptr, struct mem_holder); + return h->fn(h->mem); +} + +void *sss_mem_attach(TALLOC_CTX *mem_ctx, + void *ptr, + void_destructor_fn_t *fn) +{ + struct mem_holder *h; + + if (!ptr || !fn) return NULL; + + h = talloc(mem_ctx, struct mem_holder); + if (!h) return NULL; + + h->mem = ptr; + h->fn = fn; + talloc_set_destructor((TALLOC_CTX *)h, mem_holder_destructor); + + return h; +} -- cgit