-/* cat.c
+/* mcp.c
Copies one file to another, using mmap. */
if (argc != 3)
{
printf ("usage: cp OLD NEW\n");
- return 1;
+ return EXIT_FAILURE;
}
/* Open input file. */
if (in_fd < 0)
{
printf ("%s: open failed\n", argv[1]);
- return 1;
+ return EXIT_FAILURE;
}
size = filesize (in_fd);
if (!create (argv[2], size))
{
printf ("%s: create failed\n", argv[2]);
- return 1;
+ return EXIT_FAILURE;
}
out_fd = open (argv[2]);
if (out_fd < 0)
{
printf ("%s: open failed\n", argv[2]);
- return 1;
+ return EXIT_FAILURE;
}
/* Map files. */
if (in_map == MAP_FAILED)
{
printf ("%s: mmap failed\n", argv[1]);
- return 1;
+ return EXIT_FAILURE;
}
out_map = mmap (out_fd, out_data);
if (out_map == MAP_FAILED)
{
printf ("%s: mmap failed\n", argv[2]);
- return 1;
+ return EXIT_FAILURE;
}
/* Copy files. */
munmap (in_map);
munmap (out_map);
- return 0;
+ return EXIT_SUCCESS;
}