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authorOlivier Blin <oblin@mandriva.org>2005-04-21 15:04:06 +0000
committerOlivier Blin <oblin@mandriva.org>2005-04-21 15:04:06 +0000
commite4b3dfd157601c60306c3c4e185adb5469ff8e74 (patch)
treea5c0d6be339eb97084d72c8e4170ce1289ea2837 /mdk-stage1
parent2f6d5d1c5e9e80db39b8c331bc8c28e7e75eba48 (diff)
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use /proc/net/dev to detect network interfaces, instead of testing a limited set of interface names
Diffstat (limited to 'mdk-stage1')
-rw-r--r--mdk-stage1/probing.c79
1 files changed, 46 insertions, 33 deletions
diff --git a/mdk-stage1/probing.c b/mdk-stage1/probing.c
index 176101169..88c634cbc 100644
--- a/mdk-stage1/probing.c
+++ b/mdk-stage1/probing.c
@@ -832,55 +832,68 @@ void get_medias(enum media_type media, char *** names, char *** models, enum med
#ifndef DISABLE_NETWORK
-int net_device_available(char * device) {
- struct ifreq req;
- int s;
-
- s = socket(AF_INET, SOCK_DGRAM, 0);
- if (s < 0) {
- log_perror(device);
- return 0;
- }
- strcpy(req.ifr_name, device);
- if (ioctl(s, SIOCGIFFLAGS, &req)) {
- /* if we can't get the flags, the networking device isn't available */
- close(s);
- return 0;
+static int is_net_interface_blacklisted(char *intf)
+{
+ /* see detect_devicess::is_lan_interface() */
+ char * blacklist[] = { "lo", "ippp", "isdn", "plip", "ppp", "wifi", "sit", NULL };
+ char ** ptr = blacklist;
+
+ while (ptr && *ptr) {
+ if (!strncmp(intf, *ptr, strlen(*ptr)))
+ return 1;
+ ptr++;
}
- close(s);
- return 1;
-}
+ return 0;
+}
char ** get_net_devices(void)
{
- char * devices[] = {
- "eth0", "eth1", "eth2", "eth3", "eth4", "eth5", "eth6", "eth7", "eth8", "eth9",
- "tr0",
- "plip0", "plip1", "plip2",
- "fddi0",
-#ifdef ENABLE_USB
- "usb0", "usb1", "usb2", "usb3",
-#endif
- NULL
- };
- char ** ptr = devices;
char * tmp[50];
- int i = 0;
static int already_probed = 0;
+ FILE * f;
+ int i = 0;
if (!already_probed) {
already_probed = 1; /* cut off loop brought by: probe_that_type => my_insmod => get_net_devices */
probe_that_type(NETWORK_DEVICES, BUS_ANY);
}
- while (ptr && *ptr) {
- if (net_device_available(*ptr))
- tmp[i++] = strdup(*ptr);
- ptr++;
+ /* use /proc/net/dev since SIOCGIFCONF doesn't work with some drivers (rt2500) */
+ f = fopen("/proc/net/dev", "rb");
+ if (f) {
+ char line[128];
+
+ /* skip the two first lines */
+ fgets(line, sizeof(line), f);
+ fgets(line, sizeof(line), f);
+
+ while (1) {
+ char *start, *end;
+ if (!fgets(line, sizeof(line), f))
+ break;
+ start = line;
+ while (*start == ' ')
+ start++;
+ end = strchr(start, ':');
+ if (end)
+ end[0] = '\0';
+ if (!is_net_interface_blacklisted(start)) {
+ log_message("found net interface %s", start);
+ tmp[i++] = strdup(start);
+ } else {
+ log_message("found net interface %s, but blacklisted", start);
+ }
+ }
+
+ fclose(f);
+ } else {
+ log_message("net: could not open devices file");
}
+
tmp[i++] = NULL;
return memdup(tmp, sizeof(char *) * i);
+
}
#endif /* DISABLE_NETWORK */