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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
#ifndef _PROCESS_H_
#define _PROCESS_H_
#ifdef RTE_EXEC_ENV_BSDAPP
#define self "curproc"
#define exe "file"
#else
#define self "self"
#define exe "exe"
#endif
/*
* launches a second copy of the test process using the given argv parameters,
* which should include argv[0] as the process name. To identify in the
* subprocess the source of the call, the env_value parameter is set in the
* environment as $RTE_TEST
*/
static inline int
process_dup(const char *const argv[], int numargs, const char *env_value)
{
int num;
#ifdef RTE_LIBRTE_XEN_DOM0
char *argv_cpy[numargs + 2];
#else
char *argv_cpy[numargs + 1];
#endif
int i, fd, status;
char path[32];
pid_t pid = fork();
if (pid < 0)
return -1;
else if (pid == 0) {
/* make a copy of the arguments to be passed to exec */
for (i = 0; i < numargs; i++)
argv_cpy[i] = strdup(argv[i]);
#ifdef RTE_LIBRTE_XEN_DOM0
argv_cpy[i] = strdup("--xen-dom0");
argv_cpy[i + 1] = NULL;
num = numargs + 1;
#else
argv_cpy[i] = NULL;
num = numargs;
#endif
/* close all open file descriptors, check /proc/self/fd to only
* call close on open fds. Exclude fds 0, 1 and 2*/
for (fd = getdtablesize(); fd > 2; fd-- ) {
snprintf(path, sizeof(path), "/proc/" exe "/fd/%d", fd);
if (access(path, F_OK) == 0)
close(fd);
}
printf("Running binary with argv[]:");
for (i = 0; i < num; i++)
printf("'%s' ", argv_cpy[i]);
printf("\n");
/* set the environment variable */
if (setenv(RECURSIVE_ENV_VAR, env_value, 1) != 0)
rte_panic("Cannot export environment variable\n");
if (execv("/proc/" self "/" exe, argv_cpy) < 0)
rte_panic("Cannot exec\n");
}
/* parent process does a wait */
while (wait(&status) != pid)
;
return status;
}
#endif /* _PROCESS_H_ */
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