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Make vnode times on /kern/boottime be the boot time, not "now". 

Handy because ls(1) helpfully converts the time to human-readable
format when printing, and because shell tools like "test -nt" and
"find -newer" can be used against it.

"Inspired" by a discussion about removing lockfiles older than the
last reboot, and Al Crooks' handy observation that a close
approximation can be found with /var/run/dmesg.boot

While here, notice that a lot of the kernfs structures and naming
changed suddenly, and though it seems a clear improvement, there was no
mention in commit logs.
This commit is contained in:
dan 2003-09-10 00:45:22 +00:00
parent 0186de22d3
commit 7e5137f372
1 changed files with 10 additions and 4 deletions
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14
sys/miscfs/kernfs/kernfs_vnops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kernfs_vnops.c,v 1.91 2003/09/08 10:54:14 itojun Exp $ */
/* $NetBSD: kernfs_vnops.c,v 1.92 2003/09/10 00:45:22 dan Exp $ */
/*
* Copyright (c) 1992, 1993
@ -39,7 +39,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kernfs_vnops.c,v 1.91 2003/09/08 10:54:14 itojun Exp $");
__KERNEL_RCSID(0, "$NetBSD: kernfs_vnops.c,v 1.92 2003/09/10 00:45:22 dan Exp $");
#ifdef _KERNEL_OPT
#include "opt_ipsec.h"
@ -650,11 +650,17 @@ kernfs_getattr(v)
vap->va_size = 0;
vap->va_blocksize = DEV_BSIZE;
/*
* Make all times be current TOD. Avoid microtime(9), it's slow.
* Make all times be current TOD, except for the "boottime" node.
* Avoid microtime(9), it's slow.
* We don't guard the read from time(9) with splclock(9) since we
* don't actually need to be THAT sure the access is atomic.
*/
TIMEVAL_TO_TIMESPEC(&time, &vap->va_ctime);
if (kfs->kfs_kt->kt_namlen == 8 &&
!memcmp(kfs->kfs_kt->kt_name, "boottime", 8)) {
TIMEVAL_TO_TIMESPEC(&boottime, &vap->va_ctime);
} else {
TIMEVAL_TO_TIMESPEC(&time, &vap->va_ctime);
}
vap->va_atime = vap->va_mtime = vap->va_ctime;
vap->va_gen = 0;
vap->va_flags = 0;