groupinfo.c

来自「Apache V2.0.15 Alpha For Linuxhttpd-2_0_」· C语言 代码 · 共 86 行

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
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 *    distribution.
 *
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 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

#include "apr_strings.h"
#include "apr_portable.h"
#include "apr_user.h"
#include "apr_private.h"
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

APR_DECLARE(apr_status_t) apr_get_groupname(char **groupname, apr_gid_t groupid, apr_pool_t *p)
{
    struct group *gr;
#ifndef BEOS

#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
    struct group grp;
    char grbuf[512];

    if (getgrgid_r(groupid, &grp, grbuf, sizeof(grbuf), &gr)) {
#else
    if ((gr = getgrgid(groupid)) == NULL) {
#endif
        return errno;
    }
    *groupname = apr_pstrdup(p, gr->gr_name);
#endif
    return APR_SUCCESS;
}