/* * getpwnam.c - This file is part of the libc-8086/pwd package for ELKS, * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include <features.h> #include <unistd.h> #include <string.h> #include <errno.h> #include <fcntl.h> #include <paths.h> #include "config.h" #ifdef __UCLIBC_HAS_THREADS__ #include <pthread.h> static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER; # define LOCK pthread_mutex_lock(&mylock) # define UNLOCK pthread_mutex_unlock(&mylock); #else # define LOCK # define UNLOCK #endif int getpwnam_r (const char *name, struct passwd *password, char *buff, size_t buflen, struct passwd **crap) { int passwd_fd; if (name == NULL) { __set_errno(EINVAL); return -1; } if ((passwd_fd = open(_PATH_PASSWD, O_RDONLY)) < 0) return -1; while (__getpwent_r(password, buff, buflen, passwd_fd) != -1) if (!strcmp(password->pw_name, name)) { close(passwd_fd); return 0; } close(passwd_fd); return -1; } struct passwd *getpwnam(const char *name) { static char line_buff[PWD_BUFFER_SIZE]; static struct passwd pwd; LOCK; if (getpwnam_r(name, &pwd, line_buff, sizeof(line_buff), NULL) != -1) { UNLOCK; return &pwd; } UNLOCK; return NULL; }