mirror of https://github.com/proot-me/proot.git
46 lines
913 B
C
46 lines
913 B
C
#include <unistd.h> /* fork(2), */
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#include <stdio.h> /* perror(3), fprintf(3), */
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#include <stdlib.h> /* exit(3), */
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#include <sys/ptrace.h> /* ptrace(2), */
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#include <sys/types.h> /* waitpid(2), */
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#include <sys/wait.h> /* waitpid(2), */
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int main(void)
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{
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int child_status, status;
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pid_t pid;
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pid = fork();
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switch (pid) {
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case -1:
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perror("fork()");
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exit(EXIT_FAILURE);
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case 0: /* child */
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status = ptrace(PTRACE_TRACEME, 0, NULL, NULL);
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if (status < 0) {
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perror("ptrace(TRACEME)");
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exit(EXIT_FAILURE);
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}
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exit(EXIT_SUCCESS);
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default: /* parent */
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status = waitpid(pid, &child_status, 0);
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if (status < 0) {
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perror("waitpid()");
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exit(EXIT_FAILURE);
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}
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if (!WIFEXITED(child_status) || WEXITSTATUS(child_status) != 0) {
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perror("unexpected child status\n");
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exit(EXIT_FAILURE);
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}
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exit(EXIT_SUCCESS);
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}
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/* Unreachable. */
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exit(EXIT_FAILURE);
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}
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