From d350bee6928479a18c9351818c55ceed53fd6dba Mon Sep 17 00:00:00 2001
From: Paul Mackerras <paulus@samba.org>
Date: Fri, 14 May 1999 01:09:04 +0000
Subject: [PATCH] don't turn on IP if we can't do IPX

---
 pppd/options.c   |  6 +++++-
 pppd/pppd.h      | 10 +++++-----
 pppd/sys-linux.c | 24 ++++++++++--------------
 3 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/pppd/options.c b/pppd/options.c
index 4976376..495c29a 100644
--- a/pppd/options.c
+++ b/pppd/options.c
@@ -18,7 +18,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: options.c,v 1.58 1999/05/12 06:19:48 paulus Exp $";
+static char rcsid[] = "$Id: options.c,v 1.59 1999/05/14 01:09:03 paulus Exp $";
 #endif
 
 #include <ctype.h>
@@ -108,6 +108,10 @@ struct	bpf_program active_filter; /* Filter program for link-active pkts */
 pcap_t  pc;			/* Fake struct pcap so we can compile expr */
 #endif
 
+char *current_option;		/* the name of the option being parsed */
+int  privileged_option;		/* set iff the current option came from root */
+char *option_source;		/* string saying where the option came from */
+
 /*
  * Prototypes
  */
diff --git a/pppd/pppd.h b/pppd/pppd.h
index 4b6dbf2..a95f461 100644
--- a/pppd/pppd.h
+++ b/pppd/pppd.h
@@ -16,7 +16,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: pppd.h,v 1.40 1999/05/13 00:34:33 paulus Exp $
+ * $Id: pppd.h,v 1.41 1999/05/14 01:09:03 paulus Exp $
  */
 
 /*
@@ -193,15 +193,15 @@ extern struct	bpf_program pass_filter;   /* Filter for pkts to pass */
 extern struct	bpf_program active_filter; /* Filter for link-active pkts */
 #endif
 
-char *current_option;		/* the name of the option being parsed */
-int  privileged_option;		/* set iff the current option came from root */
-char *option_source;		/* string saying where the option came from */
-
 #ifdef MSLANMAN
 extern bool	ms_lanman;	/* Use LanMan password instead of NT */
 				/* Has meaning only with MS-CHAP challenges */
 #endif
 
+extern char *current_option;	/* the name of the option being parsed */
+extern int  privileged_option;	/* set iff the current option came from root */
+extern char *option_source;	/* string saying where the option came from */
+
 /*
  * Values for phase.
  */
diff --git a/pppd/sys-linux.c b/pppd/sys-linux.c
index 94c31dd..0537e49 100644
--- a/pppd/sys-linux.c
+++ b/pppd/sys-linux.c
@@ -1024,7 +1024,7 @@ static int read_route_table (struct rtentry *rt);
  * path_to_procfs - find the path to the proc file system mount point
  */
 
-static int path_to_procfs (void)
+static int path_to_procfs (const char *tail)
 {
     struct mntent *mntent;
     FILE *fp;
@@ -1033,6 +1033,7 @@ static int path_to_procfs (void)
     if (fp == NULL) {
 	/* Default the mount location of /proc */
 	strlcpy (route_buffer, "/proc", sizeof (route_buffer));
+	strlcat (route_buffer, tail, sizeof(route_buffer));
 	return 1;
     }
 
@@ -1047,6 +1048,7 @@ static int path_to_procfs (void)
 	return 0;
 
     strlcpy(route_buffer, mntent->mnt_dir, sizeof (route_buffer));
+    strlcat (route_buffer, tail, sizeof(route_buffer));
     return 1;
 }
 
@@ -1057,11 +1059,10 @@ static int path_to_procfs (void)
 
 static char *path_to_route (void)
 {
-    if (!path_to_procfs()) {
+    if (!path_to_procfs("/net/route")) {
 	error("proc file system not mounted");
 	return 0;
     }
-    strlcat (route_buffer, "/net/route", sizeof(route_buffer));
     return (route_buffer);
 }
 
@@ -2396,21 +2397,16 @@ int
 sys_check_options(void)
 {
 #ifdef IPX_CHANGE
-    struct stat stat_buf;
 /*
  * Disable the IPX protocol if the support is not present in the kernel.
- * If we disable it then ensure that IP support is enabled.
  */
-    while (ipxcp_protent.enabled_flag) {
-        if (path_to_procfs()) {
-	    strlcat (route_buffer, "/net/ipx_interface", sizeof(route_buffer));
-	    if (lstat (route_buffer, &stat_buf) >= 0)
-		break;
+    if (ipxcp_protent.enabled_flag) {
+	struct stat stat_buf;
+        if (path_to_procfs("/net/ipx_interface")
+	    || lstat (route_buffer, &stat_buf) < 0) {
+	    error("IPX support is not present in the kernel\n");
+	    ipxcp_protent.enabled_flag = 0;
 	}
-	error("IPX support is not present in the kernel\n");
-	ipxcp_protent.enabled_flag = 0;
-	ipcp_protent.enabled_flag  = 1;
-	break;
     }
 #endif
     if (demand && driver_is_old) {
-- 
2.39.2