Author: trociny
Date: Sat Apr 20 08:22:09 2013
New Revision: 249686
URL: http://svnweb.freebsd.org/changeset/base/249686
Log:
Make use of newly added libprocstat(3) ability to extract procstat
info from a process core file.
So now one can run procstat(1) on a process core e.g. to get a list of
files opened by a process when it crashed:
root@lisa:/ # procstat -f /root/vi.core
PID COMM FD T V FLAGS REF OFFSET PRO NAME
658 vi text v r r-------- - - - /usr/bin/vi
658 vi ctty v c rw------- - - - /dev/pts/0
658 vi cwd v d r-------- - - - /root
658 vi root v d r-------- - - - /
658 vi 0 v c rw------- 11 3208 - /dev/pts/0
658 vi 1 v c rw------- 11 3208 - /dev/pts/0
658 vi 2 v c rw------- 11 3208 - /dev/pts/0
658 vi 3 v r r----n-l- 1 0 - /tmp/vi.0AYKz3Lps7
658 vi 4 v r rw------- 1 0 -
/var/tmp/vi.recover/vi.GaGYsz
658 vi 5 v r rw------- 1 0 - -
PR: kern/173723
Suggested by: jhb
MFC after: 1 month
Modified:
head/usr.bin/procstat/procstat.1
head/usr.bin/procstat/procstat.c
Modified: head/usr.bin/procstat/procstat.1
==============================================================================
--- head/usr.bin/procstat/procstat.1 Sat Apr 20 08:19:06 2013
(r249685)
+++ head/usr.bin/procstat/procstat.1 Sat Apr 20 08:22:09 2013
(r249686)
@@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd July 11, 2012
+.Dd April 20, 2013
.Dt PROCSTAT 1
.Os
.Sh NAME
@@ -38,7 +38,7 @@
.Op Fl C
.Op Fl w Ar interval
.Op Fl b | c | e | f | i | j | k | l | s | t | v | x
-.Op Fl a | Ar pid ...
+.Op Fl a | Ar pid | Ar core ...
.Sh DESCRIPTION
The
.Nm
@@ -47,6 +47,8 @@ utility displays detailed information ab
arguments, or if the
.Fl a
flag is used, all processes.
+It can also display information extracted from a process core file, if
+the core file is specified as the argument.
.Pp
By default, basic process statistics are printed; one of the following
options may be specified in order to select more detailed process information
Modified: head/usr.bin/procstat/procstat.c
==============================================================================
--- head/usr.bin/procstat/procstat.c Sat Apr 20 08:19:06 2013
(r249685)
+++ head/usr.bin/procstat/procstat.c Sat Apr 20 08:22:09 2013
(r249686)
@@ -50,7 +50,7 @@ usage(void)
fprintf(stderr, "usage: procstat [-h] [-C] [-M core] [-N system] "
"[-w interval] \n");
fprintf(stderr, " [-b | -c | -e | -f | -i | -j | -k | "
- "-l | -s | -t | -v | -x] [-a | pid ...]\n");
+ "-l | -s | -t | -v | -x] [-a | pid | core ...]\n");
exit(EX_USAGE);
}
@@ -116,7 +116,7 @@ main(int argc, char *argv[])
int ch, interval, tmp;
int i;
struct kinfo_proc *p;
- struct procstat *prstat;
+ struct procstat *prstat, *cprstat;
long l;
pid_t pid;
char *dummy;
@@ -255,19 +255,32 @@ main(int argc, char *argv[])
}
for (i = 0; i < argc; i++) {
l = strtol(argv[i], &dummy, 10);
- if (*dummy != '\0')
- usage();
- if (l < 0)
- usage();
- pid = l;
-
- p = procstat_getprocs(prstat, KERN_PROC_PID, pid, &cnt);
- if (p == NULL)
- errx(1, "procstat_getprocs()");
- if (cnt != 0)
- procstat(prstat, p);
- procstat_freeprocs(prstat, p);
-
+ if (*dummy == '\0') {
+ if (l < 0)
+ usage();
+ pid = l;
+
+ p = procstat_getprocs(prstat, KERN_PROC_PID,
pid, &cnt);
+ if (p == NULL)
+ errx(1, "procstat_getprocs()");
+ if (cnt != 0)
+ procstat(prstat, p);
+ procstat_freeprocs(prstat, p);
+ } else {
+ cprstat = procstat_open_core(argv[i]);
+ if (cprstat == NULL) {
+ warnx("procstat_open()");
+ continue;
+ }
+ p = procstat_getprocs(cprstat, KERN_PROC_PID,
+ -1, &cnt);
+ if (p == NULL)
+ errx(1, "procstat_getprocs()");
+ if (cnt != 0)
+ procstat(cprstat, p);
+ procstat_freeprocs(cprstat, p);
+ procstat_close(cprstat);
+ }
/* Suppress header after first process. */
hflag = 1;
}
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