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| #include <sys/stat.h>
| #include <stdlib.h>
| #include <stdio.h>
| #include "memfd.h"
| #include <errno.h>
| #include <stdio.h>
|
| #define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \
| } while (0)
|
| int main(int argc, char *argv[])
| {
| ssize_t i, len;
| unsigned char* paddr;
| struct stat st;
| pid_t pid = 0;
| int fd = 0;
| int ret = 0;
|
| if (argc != 3) {
| fprintf(stderr, "%s PID FD\n", argv[0]);
| exit(EXIT_FAILURE);
| }
|
| pid = atol(argv[1]);
| fd = atol(argv[2]);
|
| fd = basic_shm_open(fd, pid, 1);
| if (fd <= 0)
| {
| errExit("basic_shm_open");
| }
|
|
| if (fstat (fd, &st))
| errExit ("fstat");
|
|
| len = st.st_size;
|
| printf("length: %zu, atime: %lu.%lu\n", len, st.st_atim.tv_sec, st.st_atim.tv_nsec);
|
| ret = basic_shm_mmap(fd, &paddr);
| if (ret < 0)
| errExit("basic_shm_mmap");
|
| printf ("start: ");
| for (i = 0; i < 32; ++i)
| printf ("%i ", paddr[i]);
| printf ("\nend: ");
| for (i = 0; i < 32; ++i)
| printf ("%i ", paddr[len-32+i]);
| printf ("\ndone\n");
|
| ret = basic_shm_unmmap(fd, &paddr);
| if (ret < 0)
| errExit("basic_shm_unmmap");
|
| basic_shm_close(fd);
|
| pause();
|
| exit(EXIT_SUCCESS);
| }
|
|
