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Make the numbers for the "superblock backups" fit nicely on the screen,

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even for larger partitions.  Until now, partition sizes > 500 MB messed
up the screen.
This commit is contained in:
Joerg Wunsch 1996-01-25 23:44:32 +00:00
parent 11b61c4563
commit 7f3b8ca95f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=13637
1 changed files with 35 additions and 1 deletions
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36
sbin/newfs/mkfs.c
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@ -46,6 +46,7 @@ static char sccsid[] = "@(#)mkfs.c 8.3 (Berkeley) 2/3/94";
#include <sys/disklabel.h>
#include <sys/file.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#ifndef STANDALONE
#include <a.out.h>
@ -121,6 +122,7 @@ struct dinode zino[MAXBSIZE / sizeof(struct dinode)];
int fsi, fso;
daddr_t alloc();
static int numbersperline();
mkfs(pp, fsys, fi, fo)
struct partition *pp;
@ -620,11 +622,12 @@ mkfs(pp, fsys, fi, fo)
*/
if (!mfs)
printf("super-block backups (for fsck -b #) at:");
i = numbersperline(sblock.fs_size * NSPF(&sblock));
for (cylno = 0; cylno < sblock.fs_ncg; cylno++) {
initcg(cylno, utime);
if (mfs)
continue;
if (cylno % 9 == 0)
if (cylno % i == 0)
printf("\n");
printf(" %d,", fsbtodb(&sblock, cgsblock(&sblock, cylno)));
fflush(stdout);
@ -1263,3 +1266,34 @@ setblock(fs, cp, h)
return;
}
}
/*
* Determine the number of block numbers that will nicely fit into a
* single line.
*/
static int
numbersperline(seccount)
long seccount;
{
int i, columns;
char *cp;
struct winsize ws;
extern char *getenv();
for (i = 0; seccount; i++, seccount /= 10)
;
i += 2; /* account for comma+space */
columns = 0;
if (ioctl(0, TIOCGWINSZ, &ws) != -1)
columns = ws.ws_col;
if (columns == 0 && (cp = getenv("COLUMNS")))
columns = atoi(cp);
if (columns == 0)
columns = 80; /* last resort */
i = columns / i;
if (i < 3)
i = 3; /* don't care */
return i;
}