mirror of
https://github.com/clearlinux/graphene.git
synced 2026-09-06 13:51:28 +00:00
32 lines
671 B
C
32 lines
671 B
C
#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <unistd.h>
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int main(int argc, char* const* argv, const char* const* envp) {
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int newfd = dup(1), outfd = dup(1);
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char fd_argv[4];
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snprintf(fd_argv, 4, "%d", newfd);
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char* const new_argv[] = {"./exec_victim", fd_argv, NULL};
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setenv("IN_EXECVE", "1", 1);
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int pid = fork();
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if (pid == 0) {
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close(outfd);
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execv(new_argv[0], new_argv);
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}
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wait(NULL);
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FILE* out = fdopen(outfd, "a");
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if (!out) {
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printf("cannot open file descriptor\n");
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return -1;
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}
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fprintf(out, "Goodbye world!\n");
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return 0;
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}
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