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Allow `w' to treat a corrupted "utmp" as a non fatal error.

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PR: bin/2832
This commit is contained in:
Joseph Koshy 1998-05-14 10:13:24 +00:00
parent ad12d72a41
commit bc53c0a6b2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=36031
1 changed files with 7 additions and 4 deletions
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11
usr.bin/w/w.c
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@ -42,7 +42,7 @@ static const char copyright[] =
static char sccsid[] = "@(#)w.c 8.4 (Berkeley) 4/16/94";
#endif
static const char rcsid[] =
"$Id: w.c,v 1.24 1997/10/13 15:17:03 ache Exp $";
"$Id: w.c,v 1.25 1998/04/19 18:32:01 phk Exp $";
#endif /* not lint */
/*
@ -209,6 +209,8 @@ main(argc, argv)
for (nusers = 0; fread(&utmp, sizeof(utmp), 1, ut);) {
if (utmp.ut_name[0] == '\0')
continue;
if (!(stp = ttystat(utmp.ut_line))) /* corrupted record */
continue;
++nusers;
if (wcmd == 0 || (sel_user &&
strncmp(utmp.ut_name, sel_user, UT_NAMESIZE) != 0))
@ -218,7 +220,6 @@ main(argc, argv)
*nextp = ep;
nextp = &(ep->next);
memmove(&(ep->utmp), &utmp, sizeof(struct utmp));
stp = ttystat(ep->utmp.ut_line);
ep->tdev = stp->st_rdev;
#ifdef CPU_CONSDEV
/*
@ -476,8 +477,10 @@ ttystat(line)
char ttybuf[MAXPATHLEN];
(void)snprintf(ttybuf, sizeof(ttybuf), "%s/%s", _PATH_DEV, line);
if (stat(ttybuf, &sb))
err(1, "%s", ttybuf);
if (stat(ttybuf, &sb)) {
warn("%s", ttybuf);
return NULL;
}
return (&sb);
}