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Diffstat (limited to 'rubbos/app/httpd-2.0.64/srclib/apr/threadproc/unix/procsup.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/srclib/apr/threadproc/unix/procsup.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr/threadproc/unix/procsup.c b/rubbos/app/httpd-2.0.64/srclib/apr/threadproc/unix/procsup.c new file mode 100644 index 00000000..e7b111bb --- /dev/null +++ b/rubbos/app/httpd-2.0.64/srclib/apr/threadproc/unix/procsup.c @@ -0,0 +1,101 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr_arch_threadproc.h" + +APR_DECLARE(apr_status_t) apr_proc_detach(int daemonize) +{ + int x; + + chdir("/"); +#if !defined(MPE) && !defined(OS2) && !defined(TPF) && !defined(BEOS) + /* Don't detach for MPE because child processes can't survive the death of + * the parent. */ + if (daemonize) { + if ((x = fork()) > 0) { + exit(0); + } + else if (x == -1) { + perror("fork"); + fprintf(stderr, "unable to fork new process\n"); + exit(1); /* we can't do anything here, so just exit. */ + } + /* RAISE_SIGSTOP(DETACH); */ + } +#endif + +#ifdef HAVE_SETSID + /* A setsid() failure is not fatal if we didn't just fork(). + * The calling process may be the process group leader, in + * which case setsid() will fail with EPERM. + */ + if (setsid() == -1 && daemonize) { + return errno; + } +#elif defined(NEXT) || defined(NEWSOS) + if (setpgrp(0, getpid()) == -1) { + return errno; + } +#elif defined(OS2) || defined(TPF) || defined(MPE) + /* do nothing */ +#else + if (setpgid(0, 0) == -1) { + return errno; + } +#endif + + /* close out the standard file descriptors */ + if (freopen("/dev/null", "r", stdin) == NULL) { + return errno; + /* continue anyhow -- note we can't close out descriptor 0 because we + * have nothing to replace it with, and if we didn't have a descriptor + * 0 the next file would be created with that value ... leading to + * havoc. + */ + } + if (freopen("/dev/null", "w", stdout) == NULL) { + return errno; + } + /* We are going to reopen this again in a little while to the error + * log file, but better to do it twice and suffer a small performance + * hit for consistancy than not reopen it here. + */ + if (freopen("/dev/null", "w", stderr) == NULL) { + return errno; + } + return APR_SUCCESS; +} + +#if (!HAVE_WAITPID) +/* From ikluft@amdahl.com + * this is not ideal but it works for SVR3 variants + * Modified by dwd@bell-labs.com to call wait3 instead of wait because + * apache started to use the WNOHANG option. + */ +int waitpid(pid_t pid, int *statusp, int options) +{ + int tmp_pid; + if (kill(pid, 0) == -1) { + errno = ECHILD; + return -1; + } + while (((tmp_pid = wait3(statusp, options, 0)) != pid) && + (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1)) + ; + return tmp_pid; +} +#endif + |