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Use modfind() to check if a kld is already loaded.

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Submitted mostly by: green
This commit is contained in:
Brian Somers 1999-11-16 21:57:34 +00:00
parent 18602ac623
commit fdb4bb1b89
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=53241
4 changed files with 14 additions and 24 deletions
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18
usr.sbin/ppp/bundle.c
View File

@ -47,6 +47,7 @@
#include <sys/wait.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include <sys/linker.h>
#include <sys/module.h>
#endif
#include <termios.h>
#include <unistd.h>
@ -607,7 +608,7 @@ bundle_Create(const char *prefix, int type, int unit, const char **argv)
static struct bundle bundle; /* there can be only one */
int enoentcount, err, minunit, maxunit;
const char *ifname;
#ifdef KLDSYM_LOOKUP
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
int kldtried;
#endif
#if defined(TUNSIFMODE) || defined(TUNSLMODE)
@ -628,7 +629,7 @@ bundle_Create(const char *prefix, int type, int unit, const char **argv)
}
err = ENOENT;
enoentcount = 0;
#ifdef KLDSYM_LOOKUP
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
kldtried = 0;
#endif
for (bundle.unit = minunit; bundle.unit != maxunit; bundle.unit++) {
@ -638,18 +639,13 @@ bundle_Create(const char *prefix, int type, int unit, const char **argv)
if (bundle.dev.fd >= 0)
break;
else if (errno == ENXIO) {
#ifdef KLDSYM_LOOKUP
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
if (bundle.unit == minunit && !kldtried++) {
/*
* XXX: For some odd reason, FreeBSD (right now) allows if_tun.ko to
* load even when the kernel contains the tun device. This lookup
* should go away when this is fixed, leaving just the kldload().
* Note also that kldsym() finds static symbols...
* Attempt to load the tunnel interface KLD if it isn't loaded
* already.
*/
char devsw[] = "tun_cdevsw";
struct kld_sym_lookup ksl = { sizeof ksl, devsw, 0, 0 };
if (kldsym(0, KLDSYM_LOOKUP, &ksl) == -1) {
if (modfind("if_tun") == -1) {
if (ID0kldload("if_tun") != -1) {
bundle.unit--;
continue;

16
usr.sbin/ppp/ether.c
View File

@ -49,6 +49,7 @@
#include <sys/fcntl.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include <sys/linker.h>
#include <sys/module.h>
#endif
#include <sys/uio.h>
#include <termios.h>
@ -409,22 +410,15 @@ ether_Create(struct physical *p)
int ifacelen, providerlen, oldflag;
char connectpath[sizeof dev->hook + 2]; /* .:<hook> */
#ifdef KLDSYM_LOOKUP
/* First make sure we've got the right code loaded */
char basesym[] = "ng_make_node", socksym[] = "ngdomain";
struct kld_sym_lookup baselookup = { sizeof baselookup, basesym, 0, 0 };
struct kld_sym_lookup socklookup = { sizeof socklookup, socksym, 0, 0 };
#endif
p->fd--; /* We own the device - change fd */
#ifdef KLDSYM_LOOKUP
if (kldsym(0, KLDSYM_LOOKUP, &baselookup) == -1) {
log_Printf(LogWARN, "Can't run without options NETGRAPH in the kernel\n");
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
if (modfind("netgraph") == -1) {
log_Printf(LogWARN, "Netgraph is not built into the kernel\n");
return NULL;
}
if (kldsym(0, KLDSYM_LOOKUP, &socklookup) == -1 &&
if (modfind("ng_socket") == -1 &&
ID0kldload("ng_socket") == -1) {
log_Printf(LogWARN, "kldload: ng_socket: %s\n", strerror(errno));
return NULL;

2
usr.sbin/ppp/id.c
View File

@ -269,7 +269,7 @@ ID0kill(pid_t pid, int sig)
return result;
}
#ifdef KLDSYM_LOOKUP
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
int
ID0kldload(const char *dev)
{

2
usr.sbin/ppp/id.h
View File

@ -45,6 +45,6 @@ extern void ID0logout(const char *, int);
extern int ID0bind_un(int, const struct sockaddr_un *);
extern int ID0connect_un(int, const struct sockaddr_un *);
extern int ID0kill(pid_t, int);
#ifdef KLDSYM_LOOKUP
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
extern int ID0kldload(const char *);
#endif