Implement the hw.disknames and hw.diskstats sysctl's that have been listed
in <sys/sysctl.h> since day one but never implemented.
This commit is contained in:
simonb
parent
7942602380
commit
ed6b438e40
@ -1,4 +1,4 @@
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.\" $NetBSD: sysctl.3,v 1.82 2002/01/15 02:36:40 wiz Exp $
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.\" $NetBSD: sysctl.3,v 1.83 2002/01/27 12:41:07 simonb Exp $
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.\"
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.\" Copyright (c) 1993
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.\" The Regents of the University of California. All rights reserved.
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@ -204,7 +204,7 @@ The string and integer information available for the CTL_HW level
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is detailed below.
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The changeable column shows whether a process with appropriate
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privilege may change the value.
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.Bl -column "Second level nameXXXXXX" integerXXX -offset indent
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.Bl -column "Second level nameXXXXXX" "struct disk_sysctlXXX" -offset indent
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.It Sy Pa Second level name Type Changeable
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.It HW\_MACHINE string no
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.It HW\_MODEL string no
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@ -217,6 +217,8 @@ privilege may change the value.
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.\".It HW\_DISKSTATS struct no
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.It HW\_MACHINE\_ARCH string no
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.It HW\_ALIGNBYTES integer no
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.It HW\_DISKNAMES string no
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.It HW\_DISKSTATS struct disk_sysctl no
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.El
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.Pp
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.Bl -tag -width "123456"
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@ -235,8 +237,16 @@ The bytes of physical memory.
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The bytes of non-kernel memory.
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.It Li HW_PAGESIZE
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The software page size.
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.\".It Fa HW_DISKNAMES
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.\".It Fa HW_DISKSTATS
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.It Li HW_DISKNAMES
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The list of (space separated) disk device names on the system.
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.It Li HW_DISKSTATS
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Return statistical information on the disk devices on the system.
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An array of
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.Va struct disk_sysctl
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structures is returned,
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whose size depends on the current number of such objects in the system.
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The third level name is the size of the
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.Va struct disk_sysctl .
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.It Li HW_MACHINE_ARCH
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The machine cpu class.
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.It Li HW_ALIGNBYTES
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@ -1,4 +1,4 @@
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/* $NetBSD: kern_sysctl.c,v 1.97 2001/11/12 15:25:17 lukem Exp $ */
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/* $NetBSD: kern_sysctl.c,v 1.98 2002/01/27 12:41:08 simonb Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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@ -43,7 +43,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kern_sysctl.c,v 1.97 2001/11/12 15:25:17 lukem Exp $");
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__KERNEL_RCSID(0, "$NetBSD: kern_sysctl.c,v 1.98 2002/01/27 12:41:08 simonb Exp $");
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#include "opt_ddb.h"
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#include "opt_insecure.h"
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@ -571,9 +571,15 @@ hw_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
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void *newp, size_t newlen, struct proc *p)
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{
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/* all sysctl names at this level are terminal */
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if (namelen != 1)
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return (ENOTDIR); /* overloaded */
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/* All sysctl names at this level, except for a few, are terminal. */
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switch (name[0]) {
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case HW_DISKSTATS:
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/* Not terminal. */
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break;
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default:
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if (namelen != 1)
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return (ENOTDIR); /* overloaded */
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}
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switch (name[0]) {
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case HW_MACHINE:
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@ -595,6 +601,10 @@ hw_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
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return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE));
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case HW_ALIGNBYTES:
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return (sysctl_rdint(oldp, oldlenp, newp, ALIGNBYTES));
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case HW_DISKNAMES:
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return (sysctl_disknames(oldp, oldlenp));
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case HW_DISKSTATS:
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return (sysctl_diskstats(name + 1, namelen - 1, oldp, oldlenp));
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case HW_CNMAGIC: {
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char magic[CNS_LEN];
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int error;
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@ -1,4 +1,4 @@
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/* $NetBSD: subr_disk.c,v 1.32 2001/11/30 01:31:30 enami Exp $ */
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/* $NetBSD: subr_disk.c,v 1.33 2002/01/27 12:41:08 simonb Exp $ */
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/*-
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* Copyright (c) 1996, 1997, 1999, 2000 The NetBSD Foundation, Inc.
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@ -78,17 +78,16 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: subr_disk.c,v 1.32 2001/11/30 01:31:30 enami Exp $");
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__KERNEL_RCSID(0, "$NetBSD: subr_disk.c,v 1.33 2002/01/27 12:41:08 simonb Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/syslog.h>
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#include <sys/time.h>
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#include <sys/disklabel.h>
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#include <sys/disk.h>
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#include <sys/sysctl.h>
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/*
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* A global list of all disks attached to the system. May grow or
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@ -96,6 +95,7 @@ __KERNEL_RCSID(0, "$NetBSD: subr_disk.c,v 1.32 2001/11/30 01:31:30 enami Exp $")
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*/
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struct disklist_head disklist; /* TAILQ_HEAD */
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int disk_count; /* number of drives in global disklist */
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struct simplelock disklist_slock = SIMPLELOCK_INITIALIZER;
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/*
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* Seek sort for disks. We depend on the driver which calls us using b_resid
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@ -394,10 +394,14 @@ disk_find(char *name)
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if ((name == NULL) || (disk_count <= 0))
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return (NULL);
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for (diskp = disklist.tqh_first; diskp != NULL;
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diskp = diskp->dk_link.tqe_next)
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if (strcmp(diskp->dk_name, name) == 0)
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simple_lock(&disklist_slock);
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for (diskp = TAILQ_FIRST(&disklist); diskp != NULL;
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diskp = TAILQ_NEXT(diskp, dk_link))
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if (strcmp(diskp->dk_name, name) == 0) {
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simple_unlock(&disklist_slock);
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return (diskp);
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}
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simple_unlock(&disklist_slock);
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return (NULL);
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}
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@ -434,7 +438,9 @@ disk_attach(struct disk *diskp)
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/*
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* Link into the disklist.
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*/
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simple_lock(&disklist_slock);
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TAILQ_INSERT_TAIL(&disklist, diskp, dk_link);
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simple_unlock(&disklist_slock);
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++disk_count;
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}
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@ -450,7 +456,9 @@ disk_detach(struct disk *diskp)
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*/
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if (--disk_count < 0)
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panic("disk_detach: disk_count < 0");
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simple_lock(&disklist_slock);
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TAILQ_REMOVE(&disklist, diskp, dk_link);
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simple_unlock(&disklist_slock);
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/*
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* Free the space used by the disklabel structures.
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@ -530,3 +538,98 @@ disk_resetstat(struct disk *diskp)
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splx(s);
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}
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int
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sysctl_disknames(void *vwhere, size_t *sizep)
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{
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char buf[DK_DISKNAMELEN + 1];
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char *where = vwhere;
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struct disk *diskp;
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size_t needed, left, slen;
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int error, first;
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first = 1;
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error = 0;
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needed = 0;
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left = *sizep;
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simple_lock(&disklist_slock);
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for (diskp = TAILQ_FIRST(&disklist); diskp != NULL;
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diskp = TAILQ_NEXT(diskp, dk_link)) {
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if (where == NULL)
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needed += strlen(diskp->dk_name) + 1;
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else {
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memset(buf, 0, sizeof(buf));
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if (first) {
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strncpy(buf, diskp->dk_name, sizeof(buf));
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first = 0;
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} else {
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buf[0] = ' ';
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strncpy(buf + 1, diskp->dk_name, sizeof(buf - 1));
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}
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buf[DK_DISKNAMELEN] = '\0';
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slen = strlen(buf);
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if (left < slen + 1)
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break;
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/* +1 to copy out the trailing NUL byte */
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error = copyout(buf, where, slen + 1);
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if (error)
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break;
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where += slen;
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needed += slen;
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left -= slen;
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}
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}
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simple_unlock(&disklist_slock);
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*sizep = needed;
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return (error);
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}
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int
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sysctl_diskstats(int *name, u_int namelen, void *vwhere, size_t *sizep)
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{
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struct disk_sysctl sdisk;
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struct disk *diskp;
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char *where = vwhere;
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size_t tocopy, left;
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int error;
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if (where == NULL) {
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*sizep = disk_count * sizeof(struct disk_sysctl);
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return (0);
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}
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if (namelen == 0)
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tocopy = sizeof(sdisk);
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else
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tocopy = name[0];
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error = 0;
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left = *sizep;
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memset(&sdisk, 0, sizeof(sdisk));
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simple_lock(&disklist_slock);
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for (diskp = TAILQ_FIRST(&disklist); diskp != NULL;
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diskp = TAILQ_NEXT(diskp, dk_link)) {
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if (left < sizeof(struct disk_sysctl))
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break;
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strncpy(sdisk.dk_name, diskp->dk_name, sizeof(sdisk.dk_name));;
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sdisk.dk_xfer = diskp->dk_xfer;
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sdisk.dk_seek = diskp->dk_seek;
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sdisk.dk_bytes = diskp->dk_bytes;
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sdisk.dk_attachtime_sec = diskp->dk_attachtime.tv_sec;
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sdisk.dk_attachtime_usec = diskp->dk_attachtime.tv_usec;
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sdisk.dk_timestamp_sec = diskp->dk_timestamp.tv_sec;
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sdisk.dk_timestamp_usec = diskp->dk_timestamp.tv_usec;
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sdisk.dk_time_sec = diskp->dk_time.tv_sec;
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sdisk.dk_time_usec = diskp->dk_time.tv_usec;
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sdisk.dk_busy = diskp->dk_busy;
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error = copyout(&sdisk, where, min(tocopy, sizeof(sdisk)));
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if (error)
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break;
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where += tocopy;
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left -= tocopy;
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}
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simple_unlock(&disklist_slock);
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return (error);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: disk.h,v 1.16 2000/05/16 05:45:53 thorpej Exp $ */
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/* $NetBSD: disk.h,v 1.17 2002/01/27 12:41:09 simonb Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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@ -131,6 +131,24 @@ struct disk {
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struct cpu_disklabel *dk_cpulabel;
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};
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#define DK_DISKNAMELEN 16
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/* The following structure is 64-bit alignment safe */
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struct disk_sysctl {
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char dk_name[DK_DISKNAMELEN];
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int32_t dk_busy;
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int32_t pad;
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u_int64_t dk_xfer;
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u_int64_t dk_seek;
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u_int64_t dk_bytes;
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u_int32_t dk_attachtime_sec;
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u_int32_t dk_attachtime_usec;
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u_int32_t dk_timestamp_sec;
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u_int32_t dk_timestamp_usec;
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u_int32_t dk_time_sec;
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u_int32_t dk_time_usec;
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};
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struct dkdriver {
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void (*d_strategy) __P((struct buf *));
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#ifdef notyet
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@ -1,4 +1,4 @@
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/* $NetBSD: sysctl.h,v 1.70 2001/10/05 19:05:06 eeh Exp $ */
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/* $NetBSD: sysctl.h,v 1.71 2002/01/27 12:41:08 simonb Exp $ */
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/*
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* Copyright (c) 1989, 1993
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@ -444,7 +444,7 @@ struct kinfo_proc2 {
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#define HW_PHYSMEM 5 /* int: total memory */
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#define HW_USERMEM 6 /* int: non-kernel memory */
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#define HW_PAGESIZE 7 /* int: software page size */
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#define HW_DISKNAMES 8 /* strings: disk drive names */
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#define HW_DISKNAMES 8 /* string: disk drive names */
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#define HW_DISKSTATS 9 /* struct: diskstats[] */
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#define HW_MACHINE_ARCH 10 /* string: machine architecture */
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#define HW_ALIGNBYTES 11 /* int: ALIGNBYTES for the kernel */
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@ -460,7 +460,7 @@ struct kinfo_proc2 {
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{ "physmem", CTLTYPE_INT }, \
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{ "usermem", CTLTYPE_INT }, \
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{ "pagesize", CTLTYPE_INT }, \
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{ "disknames", CTLTYPE_STRUCT }, \
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{ "disknames", CTLTYPE_STRING }, \
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{ "diskstats", CTLTYPE_STRUCT }, \
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{ "machine_arch", CTLTYPE_STRING }, \
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{ "alignbytes", CTLTYPE_INT }, \
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@ -650,6 +650,8 @@ int sysctl_struct(void *, size_t *, void *, size_t, void *, int);
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int sysctl_rdstruct(void *, size_t *, void *, const void *, int);
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int sysctl_rdminstruct(void *, size_t *, void *, const void *, int);
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int sysctl_clockrate(void *, size_t *);
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int sysctl_disknames(void *, size_t *);
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int sysctl_diskstats(int *, u_int, void *, size_t *);
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int sysctl_vnode(char *, size_t *, struct proc *);
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int sysctl_ntptime(void *, size_t *);
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#ifdef GPROF
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