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-rw-r--r--networking/vconfig.c62
1 files changed, 36 insertions, 26 deletions
diff --git a/networking/vconfig.c b/networking/vconfig.c
index 3bd9c3040..d58c375f7 100644
--- a/networking/vconfig.c
+++ b/networking/vconfig.c
@@ -1,3 +1,27 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * vconfig implementation for busybox
4 *
5 * Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23/* BB_AUDIT SUSv3 N/A */
24
1#include <stdlib.h> 25#include <stdlib.h>
2#include <unistd.h> 26#include <unistd.h>
3#include <fcntl.h> 27#include <fcntl.h>
@@ -11,29 +35,14 @@
11#define VLAN_GROUP_ARRAY_LEN 4096 35#define VLAN_GROUP_ARRAY_LEN 4096
12#define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */ 36#define SIOCSIFVLAN 0x8983 /* Set 802.1Q VLAN options */
13 37
14/* This is rather specialized in that we're passing a 'char **' in
15 * order to avoid the pointer dereference multiple times in the
16 * actual calls below. */
17static unsigned long xstrtoul10(char **str, unsigned long max_val)
18{
19 char *endptr;
20 unsigned long r;
21
22 r = strtoul(str[2], &endptr, 10);
23 if ((r > max_val) || (*endptr != 0)) {
24 show_usage();
25 }
26 return r;
27}
28
29/* On entry, table points to the length of the current string plus 38/* On entry, table points to the length of the current string plus
30 * nul terminator plus data lenght for the subsequent entry. The 39 * nul terminator plus data length for the subsequent entry. The
31 * return value is the last data entry for the matching string. */ 40 * return value is the last data entry for the matching string. */
32static const char *xfind_str(const char *table, const char *str) 41static const char *xfind_str(const char *table, const char *str)
33{ 42{
34 while (strcasecmp(str, table+1) != 0) { 43 while (strcasecmp(str, table+1) != 0) {
35 if (!*(table += table[0])) { 44 if (!*(table += table[0])) {
36 show_usage(); 45 bb_show_usage();
37 } 46 }
38 } 47 }
39 return table - 1; 48 return table - 1;
@@ -89,12 +98,12 @@ int vconfig_main(int argc, char **argv)
89 int fd; 98 int fd;
90 99
91 if (argc < 3) { 100 if (argc < 3) {
92 show_usage(); 101 bb_show_usage();
93 } 102 }
94 103
95 /* Don't bother closing the filedes. It will be closed on cleanup. */ 104 /* Don't bother closing the filedes. It will be closed on cleanup. */
96 if (open(conf_file_name, O_RDONLY) < 0) { /* Is 802.1q is present? */ 105 if (open(conf_file_name, O_RDONLY) < 0) { /* Is 802.1q is present? */
97 perror_msg_and_die("open %s", conf_file_name); 106 bb_perror_msg_and_die("open %s", conf_file_name);
98 } 107 }
99 108
100 memset(&ifr, 0, sizeof(struct vlan_ioctl_args)); 109 memset(&ifr, 0, sizeof(struct vlan_ioctl_args));
@@ -103,16 +112,17 @@ int vconfig_main(int argc, char **argv)
103 p = xfind_str(cmds+2, *argv); 112 p = xfind_str(cmds+2, *argv);
104 ifr.cmd = *p; 113 ifr.cmd = *p;
105 if (argc != p[-1]) { 114 if (argc != p[-1]) {
106 show_usage(); 115 bb_show_usage();
107 } 116 }
108 117
109 if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) { /* set_name_type */ 118 if (ifr.cmd == SET_VLAN_NAME_TYPE_CMD) { /* set_name_type */
110 ifr.u.name_type = *xfind_str(name_types+1, argv[1]); 119 ifr.u.name_type = *xfind_str(name_types+1, argv[1]);
111 } else { 120 } else {
112 if (strlen(argv[1]) >= IF_NAMESIZE) { 121 if (strlen(argv[1]) >= IF_NAMESIZE) {
113 error_msg_and_die("if_name >= %d chars\n", IF_NAMESIZE); 122 bb_error_msg_and_die("if_name >= %d chars\n", IF_NAMESIZE);
114 } 123 }
115 strcpy(ifr.device1, argv[1]); 124 strcpy(ifr.device1, argv[1]);
125 p = argv[2];
116 126
117 /* I suppose one could try to combine some of the function calls below, 127 /* I suppose one could try to combine some of the function calls below,
118 * since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized 128 * since ifr.u.flag, ifr.u.VID, and ifr.u.skb_priority are all same-sized
@@ -120,19 +130,19 @@ int vconfig_main(int argc, char **argv)
120 * doing so wouldn't save that much space and would also make maintainence 130 * doing so wouldn't save that much space and would also make maintainence
121 * more of a pain. */ 131 * more of a pain. */
122 if (ifr.cmd == SET_VLAN_FLAG_CMD) { /* set_flag */ 132 if (ifr.cmd == SET_VLAN_FLAG_CMD) { /* set_flag */
123 ifr.u.flag = xstrtoul10(argv, 1); 133 ifr.u.flag = bb_xgetularg10_bnd(p, 0, 1);
124 } else if (ifr.cmd == ADD_VLAN_CMD) { /* add */ 134 } else if (ifr.cmd == ADD_VLAN_CMD) { /* add */
125 ifr.u.VID = xstrtoul10(argv, VLAN_GROUP_ARRAY_LEN-1); 135 ifr.u.VID = bb_xgetularg10_bnd(p, 0, VLAN_GROUP_ARRAY_LEN-1);
126 } else if (ifr.cmd != DEL_VLAN_CMD) { /* set_{egress|ingress}_map */ 136 } else if (ifr.cmd != DEL_VLAN_CMD) { /* set_{egress|ingress}_map */
127 ifr.u.skb_priority = xstrtoul10(argv, ULONG_MAX); 137 ifr.u.skb_priority = bb_xgetularg10_bnd(p, 0, ULONG_MAX);
128 ifr.vlan_qos = xstrtoul10(argv+1, 7); 138 ifr.vlan_qos = bb_xgetularg10_bnd(argv[3], 0, 7);
129 } 139 }
130 } 140 }
131 141
132 if (((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) 142 if (((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
133 || (ioctl(fd, SIOCSIFVLAN, &ifr) < 0) 143 || (ioctl(fd, SIOCSIFVLAN, &ifr) < 0)
134 ) { 144 ) {
135 perror_msg_and_die("socket or ioctl error for %s", *argv); 145 bb_perror_msg_and_die("socket or ioctl error for %s", *argv);
136 } 146 }
137 147
138 return 0; 148 return 0;