| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2000-2001 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| /* |
| * fill pathname key nbyte |
| * |
| * use key to seed random number generator so data is deterministic |
| * |
| * lines are at most 72 bytes long so diff(1) does not choke |
| */ |
| |
| int |
| main(int argc, char **argv) |
| { |
| FILE *f; |
| unsigned int seed; |
| long i; |
| int nbyte; |
| char *hdr; |
| char *hp; |
| char c; |
| |
| /* quick and dirty, no args checking */ |
| if ((f = fopen(argv[1], "w")) == NULL) { |
| fprintf(stderr, "fill: cannot create \"%s\": %s\n", argv[1], strerror(errno)); |
| exit(1); |
| } |
| seed = 0; |
| i = 0; |
| while (argv[2][i]) { |
| seed <<= 8; |
| seed |= argv[2][i]; |
| i++; |
| } |
| srand(seed); |
| |
| nbyte = atoi(argv[3]); |
| |
| /* |
| * line format |
| * |
| * byte offset @ start of this line XXXXXXXXXXXX |
| * test iteration number XXXX |
| * key (usually file name) argv[2] |
| * random bytes to fill the line |
| */ |
| |
| hdr = (char *)malloc(12+1+4+1+strlen(argv[2])+1+1); |
| sprintf(hdr, "%012ld %04d %s ", (long int)0, 0, argv[2]); |
| hp = hdr; |
| |
| for (i = 0; i < nbyte-1; i++) { |
| if (*hp) { |
| c = *hp; |
| hp++; |
| } |
| else if ((i % 72) == 71) |
| c = '\n'; |
| else |
| c = 32+(rand() % (128-32)); |
| fputc(c, f); |
| if (c == '\n') { |
| hp = hdr; |
| sprintf(hdr, "%012ld %04d %s ", i+1, 0, argv[2]); |
| } |
| } |
| fputc('\n', f); |
| |
| exit(0); |
| } |