1 /* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
2 See the file COPYING for copying permission.
21 filemap(const char *name,
22 void (*processor)(const void *, size_t, const char *, void *arg),
30 fd = open(name, O_RDONLY);
35 if (fstat(fd, &sb) < 0) {
40 if (!S_ISREG(sb.st_mode)) {
42 fprintf(stderr, "%s: not a regular file\n", name);
47 /* mmap fails for zero length files */
49 static const char c = '\0';
50 processor(&c, 0, name, arg);
54 p = (void *)mmap((void *)0, (size_t)nbytes, PROT_READ,
55 MAP_FILE|MAP_PRIVATE, fd, (off_t)0);
56 if (p == (void *)-1) {
61 processor(p, nbytes, name, arg);
62 munmap((void *)p, nbytes);