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Don't open /dev/mem until we need it, most cases we don't.

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This commit is contained in:
Poul-Henning Kamp 1998-08-05 13:54:07 +00:00
parent 11af289961
commit 99453c6ab8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=38124
1 changed files with 25 additions and 26 deletions
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51
usr.bin/netstat/main.c
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@ -42,7 +42,7 @@ char const copyright[] =
static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
#endif
static const char rcsid[] =
"$Id: main.c,v 1.19 1997/07/29 06:51:40 charnier Exp $";
"$Id: main.c,v 1.20 1998/05/15 20:19:16 wollman Exp $";
#endif /* not lint */
#include <sys/param.h>
@ -210,6 +210,7 @@ static struct protox *name2protox __P((char *));
static struct protox *knownname __P((char *));
kvm_t *kvmd;
char *nlistf = NULL, *memf = NULL;
int
main(argc, argv)
@ -219,7 +220,6 @@ main(argc, argv)
register struct protoent *p;
register struct protox *tp; /* for printing cblocks & stats */
int ch;
char *nlistf = NULL, *memf = NULL;
char buf[_POSIX2_LINE_MAX];
af = AF_UNSPEC;
@ -343,28 +343,6 @@ main(argc, argv)
if (nlistf != NULL || memf != NULL)
setgid(getgid());
/*
* XXX.
*/
kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf);
if (kvmd != NULL) {
if (kvm_nlist(kvmd, nl) < 0) {
if(nlistf)
errx(1, "%s: kvm_nlist: %s", nlistf,
kvm_geterr(kvmd));
else
errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
}
if (nl[0].n_type == 0) {
if(nlistf)
errx(1, "%s: no namelist", nlistf);
else
errx(1, "no namelist");
}
} else {
errx(1, "%s", buf);
}
if (mflag) {
mbpr();
exit(0);
@ -484,8 +462,29 @@ kread(addr, buf, size)
int size;
{
if (kvmd == 0) {
warnx("KVM is not open");
return -1;
/*
* XXX.
*/
kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf);
if (kvmd != NULL) {
if (kvm_nlist(kvmd, nl) < 0) {
if(nlistf)
errx(1, "%s: kvm_nlist: %s", nlistf,
kvm_geterr(kvmd));
else
errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
}
if (nl[0].n_type == 0) {
if(nlistf)
errx(1, "%s: no namelist", nlistf);
else
errx(1, "no namelist");
}
} else {
warnx("kvm not available");
return(-1);
}
}
if (kvm_read(kvmd, addr, buf, size) != size) {
warnx("%s", kvm_geterr(kvmd));