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// 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);
}
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