efbbcade43
Use of these macros, apart from the benefits mentioned in the commit that adds the macros, has some other good side effects: - Consistency in getting the size of the object from sizeof(type), instead of a mix of sizeof(type) sometimes and sizeof(*p) other times. - More readable code: no casts, and no sizeof(), so also shorter lines that we don't need to cut. - Consistency in using array allocation calls for allocations of arrays of objects, even when the object size is 1. Cc: Valentin V. Bartenev <vbartenev@gmail.com> Signed-off-by: Alejandro Colomar <alx@kernel.org>
90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
/*
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* SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
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* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
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* SPDX-FileCopyrightText: 2001 , Michał Moskal
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* SPDX-FileCopyrightText: 2005 , Tomasz Kłoczko
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* SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <config.h>
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#ident "$Id$"
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#include "alloc.h"
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#include "prototypes.h"
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#include "defines.h"
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#include "groupio.h"
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/*@null@*/ /*@only@*/struct group *__gr_dup (const struct group *grent)
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{
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struct group *gr;
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int i;
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gr = MALLOC (struct group);
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if (NULL == gr) {
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return NULL;
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}
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/* The libc might define other fields. They won't be copied. */
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memset (gr, 0, sizeof *gr);
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gr->gr_gid = grent->gr_gid;
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/*@-mustfreeonly@*/
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gr->gr_name = strdup (grent->gr_name);
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/*@=mustfreeonly@*/
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if (NULL == gr->gr_name) {
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gr_free(gr);
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return NULL;
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}
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/*@-mustfreeonly@*/
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gr->gr_passwd = strdup (grent->gr_passwd);
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/*@=mustfreeonly@*/
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if (NULL == gr->gr_passwd) {
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gr_free(gr);
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return NULL;
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}
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for (i = 0; grent->gr_mem[i]; i++);
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/*@-mustfreeonly@*/
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gr->gr_mem = MALLOCARRAY (i + 1, char *);
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/*@=mustfreeonly@*/
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if (NULL == gr->gr_mem) {
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gr_free(gr);
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return NULL;
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}
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for (i = 0; grent->gr_mem[i]; i++) {
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gr->gr_mem[i] = strdup (grent->gr_mem[i]);
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if (NULL == gr->gr_mem[i]) {
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gr_free(gr);
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return NULL;
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}
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}
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gr->gr_mem[i] = NULL;
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return gr;
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}
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void gr_free_members (struct group *grent)
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{
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if (NULL != grent->gr_mem) {
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size_t i;
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for (i = 0; NULL != grent->gr_mem[i]; i++) {
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free (grent->gr_mem[i]);
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}
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free (grent->gr_mem);
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grent->gr_mem = NULL;
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}
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}
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void gr_free (/*@out@*/ /*@only@*/struct group *grent)
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{
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free (grent->gr_name);
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if (NULL != grent->gr_passwd) {
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strzero (grent->gr_passwd);
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free (grent->gr_passwd);
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}
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gr_free_members(grent);
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free (grent);
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}
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