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>
87 lines
1.8 KiB
C
87 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: 2003 - 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 <stdio.h>
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#include "alloc.h"
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#include "defines.h"
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#include "prototypes.h"
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#include "pwio.h"
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/*@null@*/ /*@only@*/struct passwd *__pw_dup (const struct passwd *pwent)
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{
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struct passwd *pw;
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pw = CALLOC (1, struct passwd);
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if (NULL == pw) {
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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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pw->pw_uid = pwent->pw_uid;
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pw->pw_gid = pwent->pw_gid;
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/*@-mustfreeonly@*/
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pw->pw_name = strdup (pwent->pw_name);
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/*@=mustfreeonly@*/
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if (NULL == pw->pw_name) {
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pw_free(pw);
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return NULL;
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}
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/*@-mustfreeonly@*/
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pw->pw_passwd = strdup (pwent->pw_passwd);
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/*@=mustfreeonly@*/
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if (NULL == pw->pw_passwd) {
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pw_free(pw);
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return NULL;
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}
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/*@-mustfreeonly@*/
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pw->pw_gecos = strdup (pwent->pw_gecos);
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/*@=mustfreeonly@*/
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if (NULL == pw->pw_gecos) {
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pw_free(pw);
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return NULL;
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}
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/*@-mustfreeonly@*/
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pw->pw_dir = strdup (pwent->pw_dir);
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/*@=mustfreeonly@*/
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if (NULL == pw->pw_dir) {
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pw_free(pw);
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return NULL;
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}
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/*@-mustfreeonly@*/
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pw->pw_shell = strdup (pwent->pw_shell);
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/*@=mustfreeonly@*/
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if (NULL == pw->pw_shell) {
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pw_free(pw);
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return NULL;
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}
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return pw;
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}
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void pw_free (/*@out@*/ /*@only@*/struct passwd *pwent)
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{
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if (pwent != NULL) {
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free (pwent->pw_name);
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if (pwent->pw_passwd) {
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strzero (pwent->pw_passwd);
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free (pwent->pw_passwd);
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}
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free (pwent->pw_gecos);
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free (pwent->pw_dir);
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free (pwent->pw_shell);
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free (pwent);
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}
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}
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