mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-13 20:12:26 +00:00
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* https://cirosantilli.com/linux-kernel-module-cheat#rand-check-out */
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#include <inttypes.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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int bss = 0;
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int data = 1;
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int main(__attribute__((unused)) int argc, char **argv) {
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int i, *ip;
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uint64_t uint64;
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FILE *fp;
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/* Loaded addresses. */
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printf("&i = %p\n", (void *)&i);
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printf("&argv[0] = %p\n", (void *)&argv[0]);
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printf("&main = %p\n", (void *)(intptr_t)main);
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printf("&bss = %p\n", (void *)&bss);
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printf("&data = %p\n", (void *)&data);
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/* Misc syscalls. */
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printf("time(NULL) = %ju\n", (uintmax_t)time(NULL));
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printf("pid = %ju\n", (uintmax_t)getpid());
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/* malloc */
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ip = malloc(sizeof(*ip));
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printf("&malloc = %p\n", (void *)ip);
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free(ip);
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/* /dev/urandom */
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fp = fopen("/dev/urandom", "rb");
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fread(&uint64, sizeof(uint64), 1, fp);
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printf("/dev/urandom = %" PRIX64 "\n", uint64);
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fclose(fp);
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}
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