89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _PROCESS_H_
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#define _PROCESS_H_
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#ifndef RTE_EXEC_ENV_BAREMETAL
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/*
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* launches a second copy of the test process using the given argv parameters,
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* which should include argv[0] as the process name. To identify in the
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* subprocess the source of the call, the env_value parameter is set in the
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* environment as $RTE_TEST
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*/
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static inline int
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process_dup(const char *const argv[], int numargs, const char *env_value)
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{
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char *argv_cpy[numargs + 1];
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int i, fd, status;
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char path[32];
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pid_t pid = fork();
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if (pid < 0)
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return -1;
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else if (pid == 0) {
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/* make a copy of the arguments to be passed to exec */
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for (i = 0; i < numargs; i++)
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argv_cpy[i] = strdup(argv[i]);
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argv_cpy[i] = NULL;
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/* close all open file descriptors, check /proc/self/fd to only
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* call close on open fds. Exclude fds 0, 1 and 2*/
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for (fd = getdtablesize(); fd > 2; fd-- ) {
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rte_snprintf(path, sizeof(path), "/proc/self/fd/%d", fd);
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if (access(path, F_OK) == 0)
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close(fd);
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}
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printf("Running binary with argv[]:");
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for (i = 0; i < numargs; i++)
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printf("'%s' ", argv_cpy[i]);
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printf("\n");
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/* set the environment variable */
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if (setenv(RECURSIVE_ENV_VAR, env_value, 1) != 0)
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rte_panic("Cannot export environment variable\n");
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if (execv("/proc/self/exe", argv_cpy) < 0)
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rte_panic("Cannot exec\n");
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}
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/* parent process does a wait */
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while (wait(&status) != pid)
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;
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return status;
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}
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#endif /* not baremetal */
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#endif /* _PROCESS_H_ */
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