From 05f85292c953b694a832bebd61210111c772f73a Mon Sep 17 00:00:00 2001 From: mickey Date: Tue, 18 Apr 2000 20:17:53 +0000 Subject: [PATCH] add back a way to analyze post-mortem cores; does not need sgid for syctl() thoguh --- usr.bin/nfsstat/Makefile | 4 +- usr.bin/nfsstat/nfsstat.1 | 18 +++++++- usr.bin/nfsstat/nfsstat.c | 86 +++++++++++++++++++++++++++------------ 3 files changed, 81 insertions(+), 27 deletions(-) diff --git a/usr.bin/nfsstat/Makefile b/usr.bin/nfsstat/Makefile index e33568b688e..ed321b45ca6 100644 --- a/usr.bin/nfsstat/Makefile +++ b/usr.bin/nfsstat/Makefile @@ -1,6 +1,8 @@ -# $OpenBSD: Makefile,v 1.4 2000/04/18 15:24:26 mickey Exp $ +# $OpenBSD: Makefile,v 1.5 2000/04/18 20:17:53 mickey Exp $ PROG= nfsstat CFLAGS+=-DNFS +DPADD= ${LIBKVM} +LDADD= -lkvm .include diff --git a/usr.bin/nfsstat/nfsstat.1 b/usr.bin/nfsstat/nfsstat.1 index f7c33f67485..ed6d6f332ef 100644 --- a/usr.bin/nfsstat/nfsstat.1 +++ b/usr.bin/nfsstat/nfsstat.1 @@ -1,4 +1,4 @@ -.\" $OpenBSD: nfsstat.1,v 1.7 2000/04/18 15:24:26 mickey Exp $ +.\" $OpenBSD: nfsstat.1,v 1.8 2000/04/18 20:17:54 mickey Exp $ .\" $NetBSD: nfsstat.1,v 1.8 1996/03/03 17:21:28 thorpej Exp $ .\" .\" Copyright (c) 1989, 1990, 1993 @@ -44,6 +44,8 @@ statistics .Sh SYNOPSIS .Nm nfsstat +.Op Fl M Ar core +.Op Fl N Ar system .Op Fl w Ar wait .Op Fl s .Op Fl c @@ -55,6 +57,13 @@ client and server activity. .Pp The options are as follows: .Bl -tag -width Ds +.It Fl M Ar core +Extract values associated with the name list from the specified core +instead of the default +.Pa /dev/kmem . +.It Fl N Ar system +Extract the name list from the specified system instead of the default +.Pa /bsd . .It Fl w Ar wait Display a shorter summary of .Tn NFS @@ -64,6 +73,13 @@ second intervals. .It Fl s Display server statistics only. .It Fl c +.Sh FILES +.Bl -tag -width /dev/kmem -compact +.It Pa /bsd +default kernel namelist +.It Pa /dev/kmem +default memory file +.El Display client statistics only. .El .Sh SEE ALSO diff --git a/usr.bin/nfsstat/nfsstat.c b/usr.bin/nfsstat/nfsstat.c index fb86b3927c5..a3c2fbbbdd2 100644 --- a/usr.bin/nfsstat/nfsstat.c +++ b/usr.bin/nfsstat/nfsstat.c @@ -1,4 +1,4 @@ -/* $OpenBSD: nfsstat.c,v 1.8 2000/04/18 15:24:26 mickey Exp $ */ +/* $OpenBSD: nfsstat.c,v 1.9 2000/04/18 20:17:54 mickey Exp $ */ /* $NetBSD: nfsstat.c,v 1.7 1996/03/03 17:21:30 thorpej Exp $ */ /* @@ -48,7 +48,7 @@ static char copyright[] = static char sccsid[] = "from: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93"; static char *rcsid = "$NetBSD: nfsstat.c,v 1.7 1996/03/03 17:21:30 thorpej Exp $"; #else -static char *rcsid = "$OpenBSD: nfsstat.c,v 1.8 2000/04/18 15:24:26 mickey Exp $"; +static char *rcsid = "$OpenBSD: nfsstat.c,v 1.9 2000/04/18 20:17:54 mickey Exp $"; #endif #endif /* not lint */ @@ -59,25 +59,37 @@ static char *rcsid = "$OpenBSD: nfsstat.c,v 1.8 2000/04/18 15:24:26 mickey Exp $ #include #include #include +#include +#include #include +#include +#include #include #include #include #include +#include +#include #include #define SHOW_SERVER 0x01 #define SHOW_CLIENT 0x02 #define SHOW_ALL (SHOW_SERVER | SHOW_CLIENT) +struct nlist nl[] = { +#define N_NFSSTAT 0 + { "_nfsstats" }, + { "" }, +}; +kvm_t *kd; u_char signalled; /* set if alarm goes off "early" */ int nfs_id; void getnfsstats __P((struct nfsstats *)); -static __inline void printhdr __P((void)); -static __inline void intpr __P((u_int)); -static __inline void sidewaysintpr __P((u_int, u_int)); -static __inline void usage __P((void)); +void printhdr __P((void)); +void intpr __P((u_int)); +void sidewaysintpr __P((u_int, u_int)); +void usage __P((void)); int main(argc, argv) @@ -89,14 +101,18 @@ main(argc, argv) char *p; u_int interval; u_int display = SHOW_ALL; + char *memf, *nlistf; int ch; interval = 0; + memf = nlistf = NULL; while ((ch = getopt(argc, argv, "M:N:w:sc")) != -1) switch(ch) { case 'M': + memf = optarg; + break; case 'N': - /* compat */ + nlistf = optarg; break; case 'w': interval = (u_int)strtol(optarg, &p, 0); @@ -116,7 +132,25 @@ main(argc, argv) argc -= optind; argv += optind; - { +#define BACKWARD_COMPATIBILITY +#ifdef BACKWARD_COMPATIBILITY + if (*argv) { + interval = atoi(*argv); + if (*++argv) { + nlistf = *argv; + if (*++argv) + memf = *argv; + } + } +#endif + if (nlistf || memf) { + char errbuf[_POSIX2_LINE_MAX]; + + if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) + errx(1, "nfsstat: %s", errbuf); + if (kvm_nlist(kd, nl) != 0) + errx(1, "kvm_nlist: can't get names"); + } else { int mib[3]; size_t len; @@ -147,11 +181,6 @@ main(argc, argv) errx(1, "cannot find nfs filesystem id"); } -#define BACKWARD_COMPATIBILITY -#ifdef BACKWARD_COMPATIBILITY - if (*argv) - interval = atoi(*argv); -#endif if (interval) sidewaysintpr(interval, display); else @@ -164,21 +193,26 @@ void getnfsstats(p) struct nfsstats *p; { - int mib[3]; - size_t len = sizeof(*p); + if (kd) { + if (kvm_read(kd, nl[N_NFSSTAT].n_value, p, sizeof(*p)) != sizeof(*p)) + errx(1, "kvm_read failed"); + } else { + int mib[3]; + size_t len = sizeof(*p); - mib[0] = CTL_VFS; - mib[1] = nfs_id; /* 2 */ - mib[2] = NFS_NFSSTATS; + mib[0] = CTL_VFS; + mib[1] = nfs_id; /* 2 */ + mib[2] = NFS_NFSSTATS; - if (sysctl(mib, 3, p, &len, NULL, 0)) - err(1, "sysctl"); + if (sysctl(mib, 3, p, &len, NULL, 0)) + err(1, "sysctl"); + } } /* * Print a description of the nfs stats. */ -static __inline void +void intpr(display) u_int display; { @@ -331,7 +365,7 @@ intpr(display) * collected over that interval. Assumes that interval is non-zero. * First line printed at top of screen is always cumulative. */ -static __inline void +void sidewaysintpr(interval, display) u_int interval; u_int display; @@ -387,7 +421,7 @@ sidewaysintpr(interval, display) /*NOTREACHED*/ } -static __inline void +void printhdr() { printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", @@ -406,10 +440,12 @@ catchalarm() signalled = 1; } -static __inline void +void usage() { extern char *__progname; - fprintf(stderr, "usage: %s [-s] [-c] [-w interval]\n", __progname); + fprintf(stderr, + "usage: %s [-M core] [-N system] [-s] [-c] [-w interval]\n", + __progname); exit(1); } -- 2.20.1