e2887d5f57
Replace the BSD license header with the SPDX tag for files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef _PROCESS_H_
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#define _PROCESS_H_
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#ifdef RTE_EXEC_ENV_BSDAPP
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#define self "curproc"
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#define exe "file"
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#else
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#define self "self"
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#define exe "exe"
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#endif
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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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int num;
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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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num = numargs;
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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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snprintf(path, sizeof(path), "/proc/" exe "/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 < num; 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 /* _PROCESS_H_ */
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