#include <string.h>
#include <dirent.h>
#include <sys/socket.h>
+#include <sys/stat.h>
#include <unistd.h>
#include <poll.h>
#include "cutils/misc.h"
#include "cutils/properties.h"
#include "private/android_filesystem_config.h"
-#ifdef HAVE_LIBC_SYSTEM_PROPERTIES
+
#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
#include <sys/_system_properties.h>
-#endif
extern int do_dhcp();
extern int ifc_init();
#endif
#define WIFI_DRIVER_LOADER_DELAY 1000000
+#define SYSFS_PATH_MAX 256
static const char IFACE_DIR[] = "/data/system/wpa_supplicant";
#ifdef WIFI_DRIVER_MODULE_PATH
-static const char DRIVER_MODULE_NAME[] = WIFI_DRIVER_MODULE_NAME;
-static const char DRIVER_MODULE_TAG[] = WIFI_DRIVER_MODULE_NAME " ";
-static const char DRIVER_MODULE_PATH[] = WIFI_DRIVER_MODULE_PATH;
+static const char DRIVER_NAME_PROP[] = "wlan.modname";
+static const char DRIVER_PATH_PROP[] = "wlan.modpath";
static const char DRIVER_MODULE_ARG[] = WIFI_DRIVER_MODULE_ARG;
#endif
static const char FIRMWARE_LOADER[] = WIFI_FIRMWARE_LOADER;
static const char P2P_CONFIG_FILE[] = "/data/misc/wifi/p2p_supplicant.conf";
static const char CONTROL_IFACE_PATH[] = "/data/misc/wifi/sockets";
static const char MODULE_FILE[] = "/proc/modules";
+static const char SYSFS_CLASS_NET[] = "/sys/class/net";
+static const char MODULE_DEFAULT_DIR[] = "/system/lib/modules";
+static const char SYS_MOD_NAME_DIR[] = "device/driver/module";
static const char IFNAME[] = "IFNAME=";
#define IFNAMELEN (sizeof(IFNAME) - 1)
return dhcp_lasterror();
}
+#ifdef WIFI_DRIVER_STATE_CTRL_PARAM
+int wifi_change_driver_state(const char *state)
+{
+ int len;
+ int fd;
+ int ret = 0;
+
+ if (!state)
+ return -1;
+ fd = TEMP_FAILURE_RETRY(open(WIFI_DRIVER_STATE_CTRL_PARAM, O_WRONLY));
+ if (fd < 0) {
+ ALOGE("Failed to open driver state control param (%s)", strerror(errno));
+ return -1;
+ }
+ len = strlen(state) + 1;
+ if (TEMP_FAILURE_RETRY(write(fd, state, len)) != len) {
+ ALOGE("Failed to write driver state control param (%s)", strerror(errno));
+ ret = -1;
+ }
+ close(fd);
+ return ret;
+}
+#endif
+
+#ifdef WIFI_DRIVER_MODULE_PATH
+static int get_driver_path(const char *mod, const char *path, char *buf) {
+ DIR *dir;
+ struct dirent *de;
+ char modpath[SYSFS_PATH_MAX];
+ int ret = 0;
+
+ if ((dir = opendir(path))) {
+ while ((de = readdir(dir))) {
+ struct stat sb;
+ if (de->d_name[0] == '.')
+ continue;
+ snprintf(modpath, SYSFS_PATH_MAX, "%s/%s", path, de->d_name);
+ if (!strcmp(de->d_name, mod)) {
+ strncpy(buf, modpath, SYSFS_PATH_MAX - 1);
+ buf[SYSFS_PATH_MAX - 1] = '\0';
+ ret = 1;
+ break;
+ }
+ if (!stat(modpath, &sb) && (sb.st_mode & S_IFMT) == S_IFDIR)
+ if ((ret = get_driver_path(mod, modpath, buf)))
+ break;
+ }
+ closedir(dir);
+ }
+ return ret;
+}
+
+static int get_driver_info(char *buf) {
+ DIR *netdir;
+ struct dirent *de;
+ char path[SYSFS_PATH_MAX];
+ char link[SYSFS_PATH_MAX];
+ int ret = 0;
+
+ if ((netdir = opendir(SYSFS_CLASS_NET))) {
+ while ((de = readdir(netdir))) {
+ int cnt;
+ char *pos;
+ if (de->d_name[0] == '.')
+ continue;
+ snprintf(path, SYSFS_PATH_MAX, "%s/%s/wireless", SYSFS_CLASS_NET, de->d_name);
+ if (access(path, F_OK)) {
+ snprintf(path, SYSFS_PATH_MAX, "%s/%s/phy80211", SYSFS_CLASS_NET, de->d_name);
+ if (access(path, F_OK))
+ continue;
+ }
+ /* found the wifi interface */
+ property_set("wlan.interface", de->d_name);
+ snprintf(path, SYSFS_PATH_MAX, "%s/%s/%s", SYSFS_CLASS_NET, de->d_name, SYS_MOD_NAME_DIR);
+ if ((cnt = readlink(path, link, SYSFS_PATH_MAX - 1)) < 0) {
+ ALOGW("can not find link of %s", path);
+ continue;
+ }
+ link[cnt] = '\0';
+ if ((pos = strrchr(link, '/'))) {
+ property_set(DRIVER_NAME_PROP, ++pos);
+ strncpy(buf, pos, PROPERTY_VALUE_MAX - 1);
+ buf[PROPERTY_VALUE_MAX - 1] = '\0';
+ ret = 1;
+ break;
+ }
+ }
+ closedir(netdir);
+ }
+
+ return ret;
+}
+#endif
+
int is_wifi_driver_loaded() {
- char driver_status[PROPERTY_VALUE_MAX];
#ifdef WIFI_DRIVER_MODULE_PATH
+ char modname[PROPERTY_VALUE_MAX];
+ char line[PROPERTY_VALUE_MAX];
FILE *proc;
- char line[sizeof(DRIVER_MODULE_TAG)+10];
-#endif
+ int cnt = property_get(DRIVER_NAME_PROP, modname, NULL);
- if (!property_get(DRIVER_PROP_NAME, driver_status, NULL)
- || strcmp(driver_status, "ok") != 0) {
- return 0; /* driver not loaded */
+ if (!cnt) {
+ if (get_driver_info(modname))
+ cnt = strlen(modname);
+ else if (property_get("wlan.interface", line, NULL))
+ return 1; // found an interface without modname, assume built-in
+ else
+ goto unloaded;
}
-#ifdef WIFI_DRIVER_MODULE_PATH
+ modname[cnt++] = ' ';
+
/*
* If the property says the driver is loaded, check to
* make sure that the property setting isn't just left
*/
if ((proc = fopen(MODULE_FILE, "r")) == NULL) {
ALOGW("Could not open %s: %s", MODULE_FILE, strerror(errno));
- property_set(DRIVER_PROP_NAME, "unloaded");
- return 0;
+ goto unloaded;
}
+
while ((fgets(line, sizeof(line), proc)) != NULL) {
- if (strncmp(line, DRIVER_MODULE_TAG, strlen(DRIVER_MODULE_TAG)) == 0) {
+ if (strncmp(line, modname, cnt) == 0) {
fclose(proc);
return 1;
}
}
fclose(proc);
+
+unloaded:
property_set(DRIVER_PROP_NAME, "unloaded");
return 0;
#else
{
#ifdef WIFI_DRIVER_MODULE_PATH
char driver_status[PROPERTY_VALUE_MAX];
+ char modname[PROPERTY_VALUE_MAX];
+ char modpath[SYSFS_PATH_MAX];
int count = 100; /* wait at most 20 seconds for completion */
if (is_wifi_driver_loaded()) {
return 0;
}
- if (insmod(DRIVER_MODULE_PATH, DRIVER_MODULE_ARG) < 0)
+ if (!property_get(DRIVER_PATH_PROP, modpath, NULL)) {
+ property_get(DRIVER_NAME_PROP, modname, NULL);
+ strcat(modname, ".ko");
+ if (!get_driver_path(modname, MODULE_DEFAULT_DIR, modpath))
+ strcpy(modpath, WIFI_DRIVER_MODULE_PATH);
+ }
+
+ ALOGI("got module path %s", modpath);
+ if (insmod(modpath, DRIVER_MODULE_ARG) < 0)
return -1;
if (strcmp(FIRMWARE_LOADER,"") == 0) {
sched_yield();
while (count-- > 0) {
if (property_get(DRIVER_PROP_NAME, driver_status, NULL)) {
- if (strcmp(driver_status, "ok") == 0)
+ if (strcmp(driver_status, "ok") == 0) {
+ get_driver_info(modname);
return 0;
- else if (strcmp(DRIVER_PROP_NAME, "failed") == 0) {
+ } else if (strcmp(driver_status, "failed") == 0) {
wifi_unload_driver();
return -1;
}
wifi_unload_driver();
return -1;
#else
+#ifdef WIFI_DRIVER_STATE_CTRL_PARAM
+ if (is_wifi_driver_loaded()) {
+ return 0;
+ }
+
+ if (wifi_change_driver_state(WIFI_DRIVER_STATE_ON) < 0)
+ return -1;
+#endif
property_set(DRIVER_PROP_NAME, "ok");
return 0;
#endif
{
usleep(200000); /* allow to finish interface down */
#ifdef WIFI_DRIVER_MODULE_PATH
- if (rmmod(DRIVER_MODULE_NAME) == 0) {
+ char modname[PROPERTY_VALUE_MAX];
+ if (property_get("wlan.no-unload-driver", modname, NULL)
+ && strcmp(modname, "1") == 0)
+ return 0;
+ if (!property_get(DRIVER_NAME_PROP, modname, NULL))
+ return -1;
+
+ if (rmmod(modname) == 0) {
int count = 20; /* wait at most 10 seconds for completion */
while (count-- > 0) {
if (!is_wifi_driver_loaded())
if (count) {
return 0;
}
- return -1;
- } else
- return -1;
+ }
+ return -1;
#else
+#ifdef WIFI_DRIVER_STATE_CTRL_PARAM
+ if (is_wifi_driver_loaded()) {
+ if (wifi_change_driver_state(WIFI_DRIVER_STATE_OFF) < 0)
+ return -1;
+ }
+#endif
property_set(DRIVER_PROP_NAME, "unloaded");
return 0;
#endif
return 0;
}
-int update_ctrl_interface(const char *config_file) {
-
- int srcfd, destfd;
- int nread;
- char ifc[PROPERTY_VALUE_MAX];
- char *pbuf;
- char *sptr;
- struct stat sb;
- int ret;
-
- if (stat(config_file, &sb) != 0)
- return -1;
-
- pbuf = malloc(sb.st_size + PROPERTY_VALUE_MAX);
- if (!pbuf)
- return 0;
- srcfd = TEMP_FAILURE_RETRY(open(config_file, O_RDONLY));
- if (srcfd < 0) {
- ALOGE("Cannot open \"%s\": %s", config_file, strerror(errno));
- free(pbuf);
- return 0;
- }
- nread = TEMP_FAILURE_RETRY(read(srcfd, pbuf, sb.st_size));
- close(srcfd);
- if (nread < 0) {
- ALOGE("Cannot read \"%s\": %s", config_file, strerror(errno));
- free(pbuf);
- return 0;
- }
-
- if (!strcmp(config_file, SUPP_CONFIG_FILE)) {
- property_get("wifi.interface", ifc, WIFI_TEST_INTERFACE);
- } else {
- strcpy(ifc, CONTROL_IFACE_PATH);
- }
- /* Assume file is invalid to begin with */
- ret = -1;
- /*
- * if there is a "ctrl_interface=<value>" entry, re-write it ONLY if it is
- * NOT a directory. The non-directory value option is an Android add-on
- * that allows the control interface to be exchanged through an environment
- * variable (initialized by the "init" program when it starts a service
- * with a "socket" option).
- *
- * The <value> is deemed to be a directory if the "DIR=" form is used or
- * the value begins with "/".
- */
- if ((sptr = strstr(pbuf, "ctrl_interface="))) {
- ret = 0;
- if ((!strstr(pbuf, "ctrl_interface=DIR=")) &&
- (!strstr(pbuf, "ctrl_interface=/"))) {
- char *iptr = sptr + strlen("ctrl_interface=");
- int ilen = 0;
- int mlen = strlen(ifc);
- int nwrite;
- if (strncmp(ifc, iptr, mlen) != 0) {
- ALOGE("ctrl_interface != %s", ifc);
- while (((ilen + (iptr - pbuf)) < nread) && (iptr[ilen] != '\n'))
- ilen++;
- mlen = ((ilen >= mlen) ? ilen : mlen) + 1;
- memmove(iptr + mlen, iptr + ilen + 1, nread - (iptr + ilen + 1 - pbuf));
- memset(iptr, '\n', mlen);
- memcpy(iptr, ifc, strlen(ifc));
- destfd = TEMP_FAILURE_RETRY(open(config_file, O_RDWR, 0660));
- if (destfd < 0) {
- ALOGE("Cannot update \"%s\": %s", config_file, strerror(errno));
- free(pbuf);
- return -1;
- }
- TEMP_FAILURE_RETRY(write(destfd, pbuf, nread + mlen - ilen -1));
- close(destfd);
- }
- }
- }
- free(pbuf);
- return ret;
-}
-
int ensure_config_file_exists(const char *config_file)
{
char buf[2048];
ALOGE("Cannot set RW to \"%s\": %s", config_file, strerror(errno));
return -1;
}
- /* return if we were able to update control interface properly */
- if (update_ctrl_interface(config_file) >=0) {
- return 0;
- } else {
- /* This handles the scenario where the file had bad data
- * for some reason. We continue and recreate the file.
- */
- }
+ return 0;
} else if (errno != ENOENT) {
ALOGE("Cannot access \"%s\": %s", config_file, strerror(errno));
return -1;
unlink(config_file);
return -1;
}
- return update_ctrl_interface(config_file);
+ return 0;
}
int wifi_start_supplicant(int p2p_supported)
{
char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
int count = 200; /* wait at most 20 seconds for completion */
-#ifdef HAVE_LIBC_SYSTEM_PROPERTIES
const prop_info *pi;
unsigned serial = 0, i;
-#endif
if (p2p_supported) {
strcpy(supplicant_name, P2P_SUPPLICANT_NAME);
/* Reset sockets used for exiting from hung state */
exit_sockets[0] = exit_sockets[1] = -1;
-#ifdef HAVE_LIBC_SYSTEM_PROPERTIES
/*
* Get a reference to the status property, so we can distinguish
* the case where it goes stopped => running => stopped (i.e.,
if (pi != NULL) {
serial = __system_property_serial(pi);
}
-#endif
- property_get("wifi.interface", primary_iface, WIFI_TEST_INTERFACE);
+ property_get("wlan.interface", primary_iface, WIFI_TEST_INTERFACE);
property_set("ctl.start", supplicant_name);
sched_yield();
while (count-- > 0) {
-#ifdef HAVE_LIBC_SYSTEM_PROPERTIES
if (pi == NULL) {
pi = __system_property_find(supplicant_prop_name);
}
}
}
}
-#else
- if (property_get(supplicant_prop_name, supp_status, NULL)) {
- if (strcmp(supp_status, "running") == 0)
- return 0;
- }
-#endif
usleep(100000);
}
return -1;
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