Date: Sun, 23 Aug 1998 21:06:24 +0200 (MET DST) From: Wolfram Schneider <wosch@panke.de.freebsd.org> To: current@FreeBSD.ORG Subject: file segment sizes of a core dump Message-ID: <199808231906.VAA04727@campa.panke.de>
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I added an option to size(1) which print the
file segment sizes of a core dump.
For example:
$ ./size /bin/sh
text data bss dec hex
294912 12288 35656 342856 53b48
$ ./size -c sh.core
text data bss dec hex
294912 69632 131072 495616 79000
If nobody objects I will commit the change.
Index: size.1
===================================================================
RCS file: /usr/cvs/src/usr.bin/size/size.1,v
retrieving revision 1.3
diff -u -r1.3 size.1
--- size.1 1997/08/11 07:28:18 1.3
+++ size.1 1998/08/23 17:13:04
@@ -39,6 +39,7 @@
.Nd display object file segment sizes (text, data and bss)
.Sh SYNOPSIS
.Nm size
+.Op Fl c
.Op Ar object_file ...
.Sh DESCRIPTION
.Nm Size
@@ -52,8 +53,20 @@
.Nm
attempts to report on the file
.Pa a.out .
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl c
+Print the size of a
+.Ar core dump
+file instead a
+.Ar object_file .
+.El
+.Pp
.Sh SEE ALSO
+.Xr gcore 1
.Xr a.out 5
+.Xr core 5
.Sh HISTORY
A
.Nm
Index: size.c
===================================================================
RCS file: /usr/cvs/src/usr.bin/size/size.c,v
retrieving revision 1.4
diff -u -r1.4 size.c
--- size.c 1998/07/06 21:01:32 1.4
+++ size.c 1998/08/23 18:58:03
@@ -47,6 +47,9 @@
#include <sys/param.h>
#include <sys/file.h>
+#include <sys/types.h>
+#include <sys/user.h>
+#include <sys/stat.h>
#include <err.h>
#include <a.out.h>
#include <unistd.h>
@@ -57,6 +60,8 @@
int show __P((int, char *));
static void usage __P((void));
+int coredumpsize; /* run as coredumpsize(1) command */
+
int
main(argc, argv)
int argc;
@@ -64,8 +69,11 @@
{
int ch, eval;
- while ((ch = getopt(argc, argv, "")) != -1)
+ while ((ch = getopt(argc, argv, "c")) != -1)
switch(ch) {
+ case 'c':
+ coredumpsize = 1;
+ break;
case '?':
default:
usage();
@@ -90,6 +98,8 @@
{
static int first = 1;
struct exec head;
+ struct user user;
+ struct stat stat;
u_long total;
int fd;
@@ -97,20 +107,47 @@
warn("%s", name);
return (1);
}
- if (read(fd, &head, sizeof(head)) != sizeof(head) || N_BADMAG(head)) {
- (void)close(fd);
- warnx("%s: not in a.out format", name);
- return (1);
+
+ if (!coredumpsize) {
+ if (read(fd, &head, sizeof(head)) != sizeof(head) ||
+ N_BADMAG(head)) {
+ (void)close(fd);
+ warnx("%s: not in a.out format", name);
+ return (1);
+ }
+ } else {
+ if (read(fd, &user, sizeof(user)) != sizeof(user) ||
+ fstat(fd, &stat) == -1) {
+ (void)close(fd);
+ warnx("%s: not in core format", name);
+ return (1);
+ }
+ if (stat.st_size < ptoa(UPAGES + user.u_dsize + user.u_ssize)) {
+ warnx("%s: seems not to be a valid core dump file", name);
+ close(fd);
+ return(1);
+ }
}
(void)close(fd);
if (first) {
first = 0;
(void)printf("text\tdata\tbss\tdec\thex\n");
+ }
+
+ if (!coredumpsize) {
+ total = head.a_text + head.a_data + head.a_bss;
+ (void)printf("%lu\t%lu\t%lu\t%lu\t%lx", (u_long)head.a_text,
+ (u_long)head.a_data, (u_long)head.a_bss, total, total);
+ } else {
+ total = ptoa(user.u_tsize) + ptoa(user.u_dsize) +
+ ptoa(user.u_ssize);
+ (void)printf("%lu\t%lu\t%lu\t%lu\t%lx",
+ (u_long)ptoa(user.u_tsize),
+ (u_long)ptoa(user.u_dsize),
+ (u_long)ptoa(user.u_ssize), total, total);
}
- total = head.a_text + head.a_data + head.a_bss;
- (void)printf("%lu\t%lu\t%lu\t%lu\t%lx", (u_long)head.a_text,
- (u_long)head.a_data, (u_long)head.a_bss, total, total);
+
if (count > 1)
(void)printf("\t%s", name);
(void)printf("\n");
@@ -120,6 +157,6 @@
static void
usage()
{
- (void)fprintf(stderr, "usage: size [file ...]\n");
+ (void)fprintf(stderr, "usage: size [-c] [file ...]\n");
exit(1);
}
--
Wolfram Schneider <wosch@freebsd.org> http://www.freebsd.org/~w/
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