307 lines
7.1 KiB
C
307 lines
7.1 KiB
C
/*
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* Guillaume Cottenceau (gc@mandrakesoft.com)
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*
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* Copyright 2000 MandrakeSoft
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*
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* This software may be freely redistributed under the terms of the GNU
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* public license.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/*
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* Portions from Erik Troan (ewt@redhat.com)
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*
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* Copyright 1996 Red Hat Software
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*
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*/
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/*
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* This contains stuff related to probing:
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* (1) any (actually only SCSI, NET, CPQ, USB Controllers) devices (autoprobe for PCI and USB)
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* (2) IDE media
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* (3) SCSI media
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* (4) ETH devices
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*/
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <fcntl.h>
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <dirent.h>
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#include "stage1.h"
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#include "log.h"
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#include "frontend.h"
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#include "modules.h"
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#include "probing.h"
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struct media_info {
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char * name;
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char * model;
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enum media_type type;
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};
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#ifndef DISABLE_NETWORK
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struct net_description_elem
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{
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char * intf_name;
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char * intf_description;
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};
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static struct net_description_elem net_descriptions[50];
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static int net_descr_number = 0;
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static char * intf_descr_for_discover = NULL;
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static char * net_intf_too_early_name[50]; /* for modules providing more than one net intf */
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static int net_intf_too_early_number = 0;
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static int net_intf_too_early_ptr = 0;
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void net_discovered_interface(char * intf_name)
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{
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if (!intf_descr_for_discover) {
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net_intf_too_early_name[net_intf_too_early_number++] = strdup(intf_name);
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return;
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}
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if (!intf_name) {
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if (net_intf_too_early_ptr >= net_intf_too_early_number) {
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log_message("NET: was expecting another network interface (broken net module?)");
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return;
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}
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net_descriptions[net_descr_number].intf_name = net_intf_too_early_name[net_intf_too_early_ptr++];
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}
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else
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net_descriptions[net_descr_number].intf_name = strdup(intf_name);
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net_descriptions[net_descr_number].intf_description = strdup(intf_descr_for_discover);
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intf_descr_for_discover = NULL;
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net_descr_number++;
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}
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char * get_net_intf_description(char * intf_name)
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{
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char dev[SYSFS_PATH_MAX];
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char drv[SYSFS_PATH_MAX];
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ssize_t i;
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snprintf(dev, SYSFS_PATH_MAX, "/sys/class/net/%s/device/driver", intf_name);
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if ((i = readlink(dev, drv, SYSFS_PATH_MAX)) > 0) {
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drv[i] = '\0';
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return strdup(strrchr(drv, '/') + 1);
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} else {
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return strdup("unknown");
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}
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}
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#endif
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#ifndef DISABLE_MEDIAS
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static struct media_info * medias = NULL;
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static int usb_not_there(void)
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{
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DIR *dir = opendir("/sys/module/usb_storage");
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if (dir) closedir(dir);
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return !dir;
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}
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static void find_media(void)
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{
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FILE *f;
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DIR *dir = NULL;
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struct dirent *dirent = NULL;
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struct stat st;
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struct media_info tmp[50];
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char path[SYSFS_PATH_MAX];
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char buf[512];
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char *s;
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int i = 0, count = 0;
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if (medias)
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free(medias); /* that does not free the strings, by the way */
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log_message("checking for /sys/module/usb_storage directory");
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if (usb_not_there()) {
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wait_message("Waiting for USB storage devices to show up...");
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my_insmod("usb_storage", NULL);
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while (usb_not_there() && (i < 10)) {
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sleep(1);
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i++;
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}
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remove_wait_message();
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}
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if ((dir = opendir("/sys/block")) == NULL) {
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log_message("failed to open /sys/block directory");
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return;
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}
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while ((dirent = readdir(dir)) != NULL) {
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if (!strcmp(dirent->d_name, ".") ||
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!strcmp(dirent->d_name, "..")) continue;
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memset(path, 0, SYSFS_PATH_MAX);
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strcpy(path, "/sys/block/");
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strcat(path, dirent->d_name);
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s = path + strlen(path);
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/* probe for scsi type */
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strcat(path, "/device/type");
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if (lstat(path, &st) == 0 && S_ISREG(st.st_mode)) {
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tmp[count].name = strdup(dirent->d_name);
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tmp[count].type = UNKNOWN_MEDIA;
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if ((f = fopen(path, "r")) != NULL) {
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int type;
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if (fgets(buf, sizeof(buf), f) && sscanf(buf, "%d", &type)) {
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if (type == SCSI_TYPE_DISK) tmp[count].type = DISK;
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else if (type == SCSI_TYPE_ROM) tmp[count].type = CDROM;
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else if (type == SCSI_TYPE_TAPE) tmp[count].type = TAPE;
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}
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fclose(f);
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}
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*s = 0;
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strcat(path, "/device/model");
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if ((f = fopen(path, "r")) != NULL) {
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if (fgets(buf, sizeof(buf), f)) {
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if(buf[strlen(buf)-1] == '\n')
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buf[strlen(buf)-1] = 0;
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tmp[count].model = strdup(buf);
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}
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fclose(f);
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} else {
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tmp[count].model = strdup("(unknown)");
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}
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log_message("SCSI/%d: %s is a %s", tmp[count].type, tmp[count].name, tmp[count].model);
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count++;
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continue;
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}
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/* assume ide */
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*s = 0;
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strcat(s, "/device/media");
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if (lstat(path, &st) == 0 && S_ISREG(st.st_mode)) {
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tmp[count].name = strdup(dirent->d_name);
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tmp[count].type = UNKNOWN_MEDIA;
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if ((f = fopen(path, "r")) != NULL) {
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if (fgets(buf, sizeof(buf), f)) {
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if (!strncmp("disk", buf, 4))
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tmp[count].type = DISK;
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else if (!strncmp("cdrom", buf, 5))
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tmp[count].type = CDROM;
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else if (!strncmp("tape", buf, 4))
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tmp[count].type = TAPE;
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else if (!strncmp("floppy", buf, 6))
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tmp[count].type = FLOPPY;
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}
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fclose(f);
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}
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/* grab model */
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strcpy(path, "/proc/ide/");
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strcat(path, dirent->d_name);
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strcat(path, "/model");
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if ((f = fopen(path, "r")) != NULL) {
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if (fgets(buf, sizeof(buf), f)) {
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if(buf[strlen(buf)-1] == '\n')
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buf[strlen(buf)-1] = 0;
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tmp[count].model = strdup(buf);
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}
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fclose(f);
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} else {
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tmp[count].model = strdup("(none)");
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}
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log_message("IDE/%d: %s is a %s", tmp[count].type, tmp[count].name, tmp[count].model);
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count++;
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}
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}
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closedir(dir);
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tmp[count].name = NULL;
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count++;
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medias = memdup(tmp, sizeof(struct media_info) * count);
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}
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/* Finds by media */
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void get_medias(enum media_type media, char *** names, char *** models)
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{
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struct media_info * m;
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char * tmp_names[50];
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char * tmp_models[50];
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int count;
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find_media();
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m = medias;
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count = 0;
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while (m && m->name) {
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/* detect hybrid iso images (those dumped to a USB stick) */
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if ((m->type == media) || ((media == CDROM) && (m->type == DISK))) {
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tmp_names[count] = strdup(m->name);
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tmp_models[count++] = strdup(m->model);
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}
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m++;
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}
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tmp_names[count] = NULL;
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tmp_models[count++] = NULL;
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*names = memdup(tmp_names, sizeof(char *) * count);
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*models = memdup(tmp_models, sizeof(char *) * count);
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}
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#endif /* DISABLE_MEDIAS */
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#ifndef DISABLE_NETWORK
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static int net_device_available(char * device)
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{
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struct ifreq req;
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int s;
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s < 0) {
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log_perror(device);
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return 0;
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}
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strcpy(req.ifr_name, device);
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if (ioctl(s, SIOCGIFFLAGS, &req)) {
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/* if we can't get the flags, the networking device isn't available */
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close(s);
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return 0;
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}
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close(s);
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return 1;
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}
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char ** get_net_devices(void)
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{
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DIR * sys_net;
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char * tmp[50];
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struct dirent * ent;
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int i = 0;
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sys_net = opendir("/sys/class/net");
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if (sys_net == NULL) return(strdup("\0"));
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while ( ent = readdir(sys_net)){
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if( !strcmp("lo", ent->d_name))continue;
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if (net_device_available(ent->d_name)){
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tmp[i++] = strdup(ent->d_name);
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}
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}
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tmp[i++] = NULL;
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return memdup(tmp, sizeof(char *) * i);
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}
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#endif /* DISABLE_NETWORK */
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