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33 * @(#)getbsize.c 8.1 (Berkeley) 6/4/93
34 * $DragonFly: src/lib/libc/gen/getbsize.c,v 1.3 2005/04/27 12:10:24 joerg Exp $
43 getbsize(headerlenp, blocksizep)
47 static char header[20];
48 long n, max, mul, blocksize;
53 #define MB (1024L * 1024L)
54 #define GB (1024L * 1024L * 1024L)
55 #define MAXB GB /* No tera, peta, nor exa. */
57 if ((p = getenv("BLOCKSIZE")) != NULL && *p != '\0') {
58 if ((n = strtol(p, &ep, 10)) < 0)
85 fmterr: warnx("%s: unknown blocksize", p);
91 warnx("maximum blocksize is %ldG", MAXB / GB);
94 if ((blocksize = n * mul) < 512) {
95 underflow: warnx("minimum blocksize is 512");
102 (void)snprintf(header, sizeof(header), "%ld%s-blocks", n, form);
103 *headerlenp = strlen(header);
104 *blocksizep = blocksize;