a269d96978
Fujitsu: POSTK_DEBUG_TEMP_FIX_38 Refs: #1005 Change-Id: I8934d2aecf06a09469afe131347e42b48b6f67f6
55 lines
1.0 KiB
C
55 lines
1.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include "./test_chk.h"
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#define TEST_NAME "devmap_and_segv"
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#define PROCFILE_LEN 128
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#define MAP_LEN 4096
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#define DEV_NAME "/dev/test_mck/mmap_dev2"
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int main(int argc, char *argv[])
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{
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int dev_fd = 0;
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pid_t pid = getpid();
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void *dev_map = NULL;
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char *segv_addr = NULL;
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char cmd[128];
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printf("*** %s start *******************************\n", TEST_NAME);
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/* open device file */
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dev_fd = open(DEV_NAME, O_RDONLY);
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OKNG(dev_fd < 0, "open test_device_file:%s", DEV_NAME);
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/* mmap device file */
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dev_map = mmap(NULL, MAP_LEN, PROT_READ, MAP_SHARED, dev_fd, 0);
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OKNG(dev_map == MAP_FAILED, "mmap device file");
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printf(" map dev_file to %p\n", dev_map);
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/* print maps */
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sprintf(cmd, "cat /proc/%d/maps", pid);
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system(cmd);
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/* occur segv */
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*segv_addr = '0';
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printf("*** Why reached here? ***\n");
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return 0;
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fn_fail:
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if (dev_fd > 0) {
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close(dev_fd);
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}
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return -1;
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}
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