5249138dcd
* Patched crt0 to support a pre_main * pre_main sets up environment variables, can do other things later, but then just jumps to main with the same arguments. * Updated a bunch of apps to pass environment variables around.
33 lines
606 B
C
33 lines
606 B
C
/*
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* shmcrash2
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*
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* crashes!
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*/
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#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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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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execvp(args[0], args);
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return 5;
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}
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