diff options
Diffstat (limited to 'libc/unistd/daemon.c')
| -rw-r--r-- | libc/unistd/daemon.c | 145 |
1 files changed, 81 insertions, 64 deletions
diff --git a/libc/unistd/daemon.c b/libc/unistd/daemon.c index 4c18e55fa..895e8fca0 100644 --- a/libc/unistd/daemon.c +++ b/libc/unistd/daemon.c @@ -1,40 +1,65 @@ /* vi: set sw=4 ts=4: */ /* daemon implementation for uClibc * - * Copyright (c) 1991, 1993 + * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * - * Modified for uClibc by Erik Andersen <andersee@debian.org> - * - * This program 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. + * 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. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. * - * 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 Library General Public License - * for more details. + * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change + * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> * - * You should have received a copy of the GNU Library General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. * - * Original copyright notice is retained at the end of this file. + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. */ -#define dup2 __dup2 -#define setsid __setsid -#define chdir __chdir -#define fork __fork +/* + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + * Modified for uClibc by Erik Andersen <andersen@uclibc.org> + */ #include <stdio.h> #include <features.h> #include <fcntl.h> #include <paths.h> #include <unistd.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <errno.h> +#include <sys/stat.h> +#include <not-cancel.h> +#endif -#if defined __ARCH_HAS_MMU__ +#if defined __USE_BSD || (defined __USE_XOPEN && !defined __USE_UNIX98) + +libc_hidden_proto(open) +libc_hidden_proto(close) +libc_hidden_proto(_exit) +libc_hidden_proto(dup2) +libc_hidden_proto(setsid) +libc_hidden_proto(chdir) +libc_hidden_proto(fork) int daemon( int nochdir, int noclose ) { @@ -46,63 +71,55 @@ int daemon( int nochdir, int noclose ) case 0: break; default: - _exit_internal(0); + _exit(0); } if (setsid() == -1) return(-1); +#ifndef __UCLIBC_HAS_THREADS_NATIVE__ /* Make certain we are not a session leader, or else we * might reacquire a controlling terminal */ if (fork()) - _exit_internal(0); + _exit(0); +#endif if (!nochdir) chdir("/"); - if (!noclose && (fd = __open(_PATH_DEVNULL, O_RDWR, 0)) != -1) { - dup2(fd, STDIN_FILENO); - dup2(fd, STDOUT_FILENO); - dup2(fd, STDERR_FILENO); - if (fd > 2) - __close(fd); +#ifndef __UCLIBC_HAS_THREADS_NATIVE__ + if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) + { +#else + if (!noclose) + { + struct stat64 st; + + if ((fd = open_not_cancel(_PATH_DEVNULL, O_RDWR, 0)) != -1 + && (__builtin_expect (fstat64 (fd, &st), 0) == 0)) + { + if (__builtin_expect (S_ISCHR (st.st_mode), 1) != 0) { +#endif + dup2(fd, STDIN_FILENO); + dup2(fd, STDOUT_FILENO); + dup2(fd, STDERR_FILENO); + if (fd > 2) + close(fd); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + } + else { + /* We must set an errno value since no + function call actually failed. */ + close_not_cancel_no_status (fd); + __set_errno (ENODEV); + return -1; + } + } else { + close_not_cancel_no_status (fd); + return -1; + } +#endif } return(0); } - #endif - -/*- - * Copyright (c) 1990, 1993 - * The Regents of the University of California. 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. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change - * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> - * - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - - |