Enrico Fraccaroli
39 lines
1.0 KiB
C
39 lines
1.0 KiB
C
/// MentOS, The Mentoring Operating system project
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/// @file t_groups.c
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/// @brief
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/// @copyright (c) 2014-2021 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#include <sys/unistd.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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int main(int argc, char **argv)
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{
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pid_t gid = getgid();
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pid_t pid = getpid();
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pid_t sid = getsid(0);
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printf("pid: %d, gid: %d, sid: %d\n\n", pid, gid, sid);
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for (int i = 0; i < 5; ++i) {
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if (fork() == 0) {
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pid_t gid_child = getgid();
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pid_t pid_child = getpid();
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pid_t ppid_child = getppid();
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pid_t sid_child = getsid(ppid_child);
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printf("%d) pid_child: %d, gid_child: %d, ppid_child: %d, sid_child: %d\n",
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i, pid_child, gid_child, ppid_child, sid_child);
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sleep(5);
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exit(0);
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}
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}
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//int status;
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//while (wait(&status) > 0)
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// ;
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return 0;
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} |