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76 lines
2.0 KiB
76 lines
2.0 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include <errno.h>
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#include <spawn.h>
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#include <iostream>
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#include <string>
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#include <unistd.h>
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#include <signal.h>
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#include <fcntl.h>
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extern char **environ;
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using std::string;
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using std::cout;
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using std::endl;
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using std::cerr;
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//Wait for a process completion
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//Verify it returned the expected exit code
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int main(int argc, char * argv[])
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{
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posix_spawnattr_t attr;
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posix_spawn_file_actions_t file_actions;
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pid_t pid;
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int pip[2];
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const char* appArgv[] = {
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argv[1],
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"/dev/stdin",
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"/dev/stdout",
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NULL
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};
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if (0 != pipe(pip))
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{
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cout << "pipe failed: " << errno << endl;
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return 1;
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}
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posix_spawn_file_actions_init(&file_actions);
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posix_spawn_file_actions_addclose(&file_actions, 0);
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posix_spawn_file_actions_addclose(&file_actions, pip[1]);
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posix_spawn_file_actions_adddup2(&file_actions, pip[0], 0);
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posix_spawnattr_init(&attr);
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int err = posix_spawn(&pid, argv[1], &file_actions, &attr, (char* const*)appArgv, environ);
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if (err != 0)
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{
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// child process
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cout << "posix_spawn failed with errno " << err << endl;
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}
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else
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{
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int status;
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close(pip[0]);
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write(pip[1], "OK\n", 3);
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close(pip[1]);
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waitpid(pid, &status, 0);
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if (status !=0)
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cout << "Parent report: Child process failed. Status of the child process is "<< WEXITSTATUS(status) << endl;
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else
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cout << "Parent report: Child process exited successfully" << endl;
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}
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posix_spawnattr_destroy(&attr);
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posix_spawn_file_actions_destroy(&file_actions);
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return 0;
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}
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