32 lines
666 B
C
32 lines
666 B
C
#include <sys/types.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <syscall.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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DEFN_SYSCALL2(shm_obtain, 35, char *, size_t *)
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DEFN_SYSCALL1(shm_release, 36, char *)
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int main (int argc, char ** argv) {
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if (argc < 2) {
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fprintf(stderr, "%s: expected argument\n", argv[0]);
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return 1;
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}
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printf("(this should not crash; but the kernel should free the shm block)\n");
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size_t size = 0x1000;
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volatile char * shm = (char *)syscall_shm_obtain(argv[1], &size);
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if (shm == NULL) {
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return 1;
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}
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char * args[] = {"/bin/echo", "exec'd to echo\n", NULL};
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execve(args[0], args, NULL);
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return 5;
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}
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