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/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2001 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include <stdio.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include "uti/sge_rmon.h"
#include "uti/sge_unistd.h"
#include "uti/sge_log.h"
#include "uti/sge_time.h"
#include "uti/sge_prog.h"
#include "uti/sge_string.h"
#include "basis_types.h"
#include "startprog.h"
#include "msg_daemons_common.h"
#if defined(SOLARIS)
# include "sge_smf.h"
#endif
static int do_wait(pid_t);
/*-----------------------------------------------------------------------
* startprog
* Start Sge program and wait until it exits.
* Usually it will be only useful for daemons, since it blocks the caller
* until the child exits
* Use "argv0" or "path" to build path to program
* Note: conf-struct may be uninitialized at this point
* return 0 if ok
* -1 if fork() or exec() failed or child died through signal
* -2 if executable is not stat()able
* >0 the exit status of the child
* exit status 8 is reserved for unsuccesfull exec()
*-----------------------------------------------------------------------*/
int startprog(char *argv0, char *path, char *name, ...)
{
SGE_STRUCT_STAT sb;
char prog_path[SGE_PATH_MAX];
pid_t pid;
int ret;
char *ptr;
va_list argnp;
char *argv[256];
int i;
char *str;
dstring ds;
char buffer[128];
#if defined(SOLARIS)
int err_length = 256;
char err_str[err_length];
#endif
DENTER(TOP_LAYER, "startprog");
sge_dstring_init(&ds, buffer, sizeof(buffer));
va_start(argnp, name);
for (i=0; i<256; i++)
argv[i] = NULL;
for (i=1; i<256 && (str = va_arg(argnp, char*)); i++) {
DPRINTF(("argv[%d] %s\n", i, str));
argv[i] = str;
}
va_end(argnp);
/* Check with $SGE_ROOT/bin/arch if argv0 == NULL */
if (argv0) {
sge_strlcpy(prog_path, argv0, sizeof(prog_path));
if ((ptr = strrchr(prog_path, '/'))) {
ptr++;
*ptr = '\0';
sge_strlcpy(prog_path, name, sizeof(prog_path));
if (SGE_STAT(prog_path, &sb)) {
ERROR((SGE_EVENT, MSG_FILE_STATFAILED_SS,
prog_path, strerror(errno)));
DRETURN(-2);
}
} else {
sge_strlcpy(prog_path, name, sizeof(prog_path));
}
} else {
if (!path) {
DRETURN(-2);
}
snprintf(prog_path, sizeof(prog_path), "%s/%s/%s", path, sge_get_arch(), name);
if (SGE_STAT(prog_path, &sb)) {
snprintf(prog_path, sizeof(prog_path), "%s/%s", path, name);
if (SGE_STAT(prog_path, &sb)) {
ERROR((SGE_EVENT, MSG_FILE_STATFAILED_SS, prog_path, strerror(errno)));
DRETURN(-2);
}
}
}
argv[0] = prog_path;
WARNING((SGE_EVENT, MSG_STARTUP_STARTINGPROGRAMMX_S, prog_path));
#if defined(SOLARIS)
pid = sge_smf_contract_fork(err_str, err_length);
if (pid < -1 && strlen(err_str) > 0) {
/* Print additional SMF related error message */
ERROR((SGE_EVENT, MSG_SMF_STARTPROG_FORK_FAILED_S, err_str));
}
#else
pid = fork();
#endif
if (pid < 0) {
ERROR((SGE_EVENT, MSG_PROC_CANTFORKPROCESSTOSTARTX_S, prog_path));
DRETURN(-1);
} else if (pid == 0) {
/* child */
if (getenv("SGE_DEBUG_LEVEL")) {
putenv("SGE_DEBUG_LEVEL=0 0 0 0 0 0 0 0");
}
execvp(prog_path, argv);
DEXIT;
exit(8);
} else {
/* parent */
ret = do_wait(pid);
if (ret == -1) {
CRITICAL((SGE_EVENT, MSG_PROC_CANTEXECPROCESSORPROCESSDIEDTHROUGHSIGNALX_S, prog_path));
} else if (ret > 0) {
CRITICAL((SGE_EVENT, MSG_PROC_CANTSTARTPROCESSX_S, prog_path));
}
DRETURN(ret);
}
/* should never be reached */
DRETURN(-1);
}
/*-----------------------------------------------------------------------
* do_wait
* wait for child with given pid
* return >= 0 exit status of child
* -1 if child exited with exit status 8 (exec failed)
* or child died through signal
*-----------------------------------------------------------------------*/
static int do_wait(
pid_t pid
) {
pid_t npid;
int status, exit_status, ret;
DENTER(TOP_LAYER, "do_wait");
/* This loop only ends if the process exited normally or
* died through signal
*/
do {
npid = waitpid(pid, &status, 0);
} while ((npid <= 0) || (!WIFSIGNALED(status) && !WIFEXITED(status)) ||
(npid != pid));
if (WIFEXITED(status))
exit_status = WEXITSTATUS(status);
else if (WIFSIGNALED(status))
exit_status = 8;
else {
ERROR((SGE_EVENT, SFNMAX, MSG_PROC_WAITPIDRETURNEDUNKNOWNSTATUS));
exit_status = 8;
}
ret = exit_status == 8 ? -1 : exit_status;
DPRINTF(("exit status of child: %d\n", ret));
DRETURN(ret);
}
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