int main(int argc, char **argv)
{
const char * rilLibPath = NULL;
char **rilArgv;
void *dlHandle;
const RIL_RadioFunctions *(*rilInit)(const struct RIL_Env *, int, char **);
const RIL_RadioFunctions *(*rilInitSocket)(const struct RIL_EnvSocket *, int, char **);
const RIL_RadioFunctions *funcs;
const RIL_RadioFunctionsSocket *funcsSocket;
char libPath[PROPERTY_VALUE_MAX];
char socPath[PROPERTY_VALUE_MAX];
unsigned char hasLibArgs = 0;
int i;
const char *clientId = NULL;
RLOGD("**RIL Daemon Started**");
RLOGD("**RILd param count=%d**", argc);
#ifdef MTK_RIL_MD2
RLOGD("RILD started (MD2)");
#else
RLOGD("RILD started");
#endif
if (mtkInit() == -1) goto done;
umask(S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IWOTH | S_IXOTH);
for (i = 1; i < argc ;) {
if (0 == strcmp(argv[i], "-l") && (argc - i > 1)) {
rilLibPath = argv[i + 1];
i += 2;
} else if (0 == strcmp(argv[i], "--")) {
i++;
hasLibArgs = 1;
break;
} else if (0 == strcmp(argv[i], "-c") && (argc - i > 1)) {
clientId = argv[i+1];
i += 2;
} else {
usage(argv[0]);
}
}
if (clientId == NULL) {
clientId = "0";
} else if (atoi(clientId) >= MAX_RILDS) {
RLOGE("Max Number of rild's supported is: %d", MAX_RILDS);
exit(0);
}
if (strncmp(clientId, "0", MAX_CLIENT_ID_LENGTH)) {
RIL_setRilSocketName(strncat(rild, clientId, MAX_SOCKET_NAME_LENGTH));
}
if (rilLibPath == NULL) {
#ifdef MTK_RIL_MD2
if ( 0 == property_get(LIB_PATH_PROPERTY, libPath, "/system/lib/mtk-rilmd2.so")) {
#else
if ( 0 == property_get(LIB_PATH_PROPERTY, libPath, "/system/lib/mtk-ril.so")) {
#endif
// No lib sepcified on the command line, and nothing set in props.
// Assume "no-ril" case.
goto done;
} else {
rilLibPath = libPath;
}
}
/* special override when in the emulator */
#if 1
{
static char* arg_overrides[5];
static char arg_device[32];
int done = 0;
#ifdef MTK_RIL_MD2
#define REFERENCE_RIL_PATH "/system/lib/mtk-rilmd2.so"
#else
#define REFERENCE_RIL_PATH "/system/lib/mtk-ril.so"
#endif
/* first, read /proc/cmdline into memory */
char buffer[1024], *p, *q;
int len;
int fd = open("/proc/cmdline",O_RDONLY);
if (fd < 0) {
RLOGD("could not open /proc/cmdline:%s", strerror(errno));
goto OpenLib;
}
do {
len = read(fd,buffer,sizeof(buffer));
}
while (len == -1 && errno == EINTR);
if (len < 0) {
RLOGD("could not read /proc/cmdline:%s", strerror(errno));
close(fd);
goto OpenLib;
}
close(fd);
if (strstr(buffer, "android.qemud=") != NULL)
{
/* the qemud daemon is launched after rild, so
* give it some time to create its GSM socket
*/
int tries = 5;
#define QEMUD_SOCKET_NAME "qemud"
while (1) {
int fd;
sleep(1);
fd = qemu_pipe_open("qemud:gsm");
if (fd < 0) {
fd = socket_local_client(
QEMUD_SOCKET_NAME,
ANDROID_SOCKET_NAMESPACE_RESERVED,
SOCK_STREAM );
}
if (fd >= 0) {
close(fd);
snprintf( arg_device, sizeof(arg_device), "%s/%s",
ANDROID_SOCKET_DIR, QEMUD_SOCKET_NAME );
arg_overrides[1] = "-s";
arg_overrides[2] = arg_device;
done = 1;
break;
}
RLOGD("could not connect to %s socket: %s",
QEMUD_SOCKET_NAME, strerror(errno));
if (--tries == 0)
break;
}
if (!done) {
RLOGE("could not connect to %s socket (giving up): %s",
QEMUD_SOCKET_NAME, strerror(errno));
while(1)
sleep(0x00ffffff);
}
}
/* otherwise, try to see if we passed a device name from the kernel */
if (!done) do {
#define KERNEL_OPTION "android.ril="
#define DEV_PREFIX "/dev/"
p = strstr( buffer, KERNEL_OPTION );
if (p == NULL)
break;
p += sizeof(KERNEL_OPTION)-1;
q = strpbrk( p, " \t\n\r" );
if (q != NULL)
*q = 0;
snprintf( arg_device, sizeof(arg_device), DEV_PREFIX "%s", p );
arg_device[sizeof(arg_device)-1] = 0;
arg_overrides[1] = "-d";
arg_overrides[2] = arg_device;
done = 1;
} while (0);
if (done) {
argv = arg_overrides;
argc = 3;
i = 1;
hasLibArgs = 1;
rilLibPath = REFERENCE_RIL_PATH;
RLOGD("overriding with %s %s", arg_overrides[1], arg_overrides[2]);
}
}
OpenLib:
#endif
switchUser();
#ifdef MTK_RIL_MD2
rilLibPath = "/system/lib/mtk-rilmd2.so";
#endif
RLOGD("Open ril lib path: %s", rilLibPath);
dlHandle = dlopen(rilLibPath, RTLD_NOW);
if (dlHandle == NULL) {
RLOGE("dlopen failed: %s", dlerror());
exit(EXIT_FAILURE);
}
RIL_startEventLoop();
rilInitSocket = (const int(*)(void))dlsym(dlHandle, "RIL_InitSocket");
if (rilInitSocket == NULL) {
RLOGD("Vendor RIL do not need socket id!");
rilInit = (const RIL_RadioFunctions *(*)(const struct RIL_Env *, int, char **))dlsym(dlHandle, "RIL_Init");
if (rilInit == NULL) {
RLOGE("RIL_Init not defined or exported in %s\n", rilLibPath);
exit(EXIT_FAILURE);
}
} else {
RLOGD("vendor RIL need socket id");
}
if (hasLibArgs) {
rilArgv = argv + i - 1;
argc = argc -i + 1;
} else {
static char * newArgv[MAX_LIB_ARGS];
static char args[PROPERTY_VALUE_MAX];
rilArgv = newArgv;
#ifdef MTK_RIL_MD2
property_get(LIB_ARGS_PROPERTY, args, "-d /dev/ccci2_tty0");
#else
property_get(LIB_ARGS_PROPERTY, args, "-d /dev/ttyC0");
#endif
argc = make_argv(args, rilArgv);
}
rilArgv[argc++] = "-c";
rilArgv[argc++] = clientId;
RLOGD("RIL_Init argc = %d clientId = %s", argc, rilArgv[argc-1]);
// Make sure there's a reasonable argv[0]
rilArgv[0] = argv[0];
if (rilInitSocket == NULL) {
RLOGD("Old vendor ril! so RIL_register is called");
funcs = rilInit(&s_rilEnv, argc, rilArgv);
RIL_register(funcs);
} else {
RLOGD("New vendor ril! so RIL_registerSocket is called");
funcsSocket = rilInitSocket(&s_rilEnvSocket, argc, rilArgv);
RIL_registerSocket(funcsSocket);
}
done:
RLOGD("RIL_Init starting sleep loop");
while (true) {
sleep(UINT32_MAX);
}
}
int main(int argc, char **argv)
{
const char * rilLibPath = NULL;
char **rilArgv;
static char * s_argv[MAX_LIB_ARGS] = {NULL};
void *dlHandle;
const RIL_RadioFunctions *(*rilInit)(const struct RIL_Env *, int, char **);
const RIL_RadioFunctions *funcs;
char libPath[PROPERTY_VALUE_MAX];
unsigned char hasLibArgs = 0;
int j = 0;
int i;
static char clientId[3] = {'0'};
RLOGD("**RIL Daemon Started**");
RLOGD("**RILd param count=%d**", argc);
memset(s_argv, 0, sizeof(s_argv));
s_argv[0] = argv[0];
umask(S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IWOTH | S_IXOTH);
for (i = 1, j = 1; i < argc ;) {
if (0 == strcmp(argv[i], "-l") && (argc - i > 1)) {
rilLibPath = argv[i + 1];
i += 2;
} else if (0 == strcmp(argv[i], "-c") && (argc - i > 1)) {
strncpy(clientId, argv[i+1], strlen(clientId));
i += 2;
} else if (0 == strcmp(argv[i], "--")) {
i++;
hasLibArgs = 1;
memcpy(&s_argv[j], &argv[i], argc-i);
break;
} else {
usage(argv[0]);
}
}
#ifdef QCOM_HARDWARE
if (atoi(clientId) >= MAX_RILDS) {
RLOGE("Max Number of rild's supported is: %d", MAX_RILDS);
exit(0);
}
RLOGD ("RIL Client Id:=%s", clientId);
if (strncmp(clientId, "0", MAX_CLIENT_ID_LENGTH)) {
if (RIL_setRilSocketName) {
RIL_setRilSocketName(clientId);
} else {
RLOGE("Trying to instantiate multiple rild sockets without a compatible libril!");
}
}
#endif
if (rilLibPath == NULL) {
if ( 0 == property_get(LIB_PATH_PROPERTY, libPath, NULL)) {
// No lib sepcified on the command line, and nothing set in props.
// Assume "no-ril" case.
goto done;
} else {
rilLibPath = libPath;
}
}
/* special override when in the emulator */
#if 1
{
static char arg_device[32];
int done = 0;
//连接库地址：/system/lib/libreference-ril.so
#define REFERENCE_RIL_PATH "/system/lib/libreference-ril.so"
/* first, read /proc/cmdline into memory */
char buffer[1024], *p, *q;
int len;
int fd = open("/proc/cmdline",O_RDONLY);
if (fd < 0) {
RLOGD("could not open /proc/cmdline:%s", strerror(errno));
goto OpenLib;
}
do {
len = read(fd,buffer,sizeof(buffer)); }
while (len == -1 && errno == EINTR);
if (len < 0) {
RLOGD("could not read /proc/cmdline:%s", strerror(errno));
close(fd);
goto OpenLib;
}
close(fd);
if (strstr(buffer, "android.qemud=") != NULL)
{
/* the qemud daemon is launched after rild, so
* give it some time to create its GSM socket
*/
int tries = 5;
#define QEMUD_SOCKET_NAME "qemud"
while (1) {
int fd;
sleep(1);
fd = qemu_pipe_open("qemud:gsm");
if (fd < 0) {
fd = socket_local_client(
QEMUD_SOCKET_NAME,
ANDROID_SOCKET_NAMESPACE_RESERVED,
SOCK_STREAM );
}
if (fd >= 0) {
close(fd);
snprintf( arg_device, sizeof(arg_device), "%s/%s",
ANDROID_SOCKET_DIR, QEMUD_SOCKET_NAME );
memset(s_argv, 0, sizeof(s_argv));
s_argv[1] = "-s";
s_argv[2] = arg_device;
done = 1;
break;
}
RLOGD("could not connect to %s socket: %s",
QEMUD_SOCKET_NAME, strerror(errno));
if (--tries == 0)
break;
}
if (!done) {
RLOGE("could not connect to %s socket (giving up): %s",
QEMUD_SOCKET_NAME, strerror(errno));
while(1)
sleep(0x00ffffff);
}
}
/* otherwise, try to see if we passed a device name from the kernel */
if (!done) do {
#define KERNEL_OPTION "android.ril="
#define DEV_PREFIX "/dev/"
p = strstr( buffer, KERNEL_OPTION );
if (p == NULL)
break;
p += sizeof(KERNEL_OPTION)-1;
q = strpbrk( p, " \t\n\r" );
if (q != NULL)
*q = 0;
snprintf( arg_device, sizeof(arg_device), DEV_PREFIX "%s", p );
arg_device[sizeof(arg_device)-1] = 0;
memset(s_argv, 0, sizeof(s_argv));
s_argv[1] = "-d";
s_argv[2] = arg_device;
done = 1;
} while (0);
if (done) {
argc = 3;
i = 1;
hasLibArgs = 1;
rilLibPath = REFERENCE_RIL_PATH;
RLOGD("overriding with %s %s", s_argv[1], s_argv[2]);
}
}
OpenLib:
#endif
//切换UID为AID_RADIO
switchUser();
// 打开链接库
dlHandle = dlopen(rilLibPath, RTLD_NOW);
if (dlHandle == NULL) {
RLOGE("dlopen failed: %s", dlerror());
exit(-1);
}
// 开启EventLoop循环
RIL_startEventLoop();
// 从链接库中（也就是reference-ril.c）寻找RIL_Init函数地址
rilInit = (const RIL_RadioFunctions *(*)(const struct RIL_Env *, int, char **))dlsym(dlHandle, "RIL_Init");
if (rilInit == NULL) {
RLOGE("RIL_Init not defined or exported in %s\n", rilLibPath);
exit(-1);
}
if (hasLibArgs) {
argc = argc-i+1;
} else {
static char * newArgv[MAX_LIB_ARGS];
static char args[PROPERTY_VALUE_MAX];
property_get(LIB_ARGS_PROPERTY, args, "");
argc = make_argv(args, s_argv);
}
// Make sure there's a reasonable argv[0]
s_argv[0] = argv[0];
if (argc >= MAX_LIB_ARGS - 2) {
RLOGE("Max arguments are passed for rild, args count = %d", argc);
exit(0);
}
#ifdef QCOM_HARDWARE
/* Client-id is a qualcomm thing */
s_argv[argc++] = "-c";
s_argv[argc++] = clientId;
#endif
RLOGD("RIL_Init argc = %d clientId = %s", argc, s_argv[argc-1]);
// 初始化过程将s_rilEnv全局变量传递给了reference，然后在reference-ril.c内部将这个值传给了s_rilenv
// 而s_rilEnv的各个处理函数是在ril.cpp中实现的
// 调用reference-ril.c中的RIL_Init函数进行初始化INIT，同时得到reference-ril的回调函数
funcs = rilInit(&s_rilEnv, argc, s_argv);
#ifdef QCOM_HARDWARE
if (funcs == NULL) {
/* Pre-multi-client qualcomm vendor libraries won't support "-c" either, so
* try again without it. This should only happen on ancient qcoms, so raise
* a big fat warning
*/
argc -= 2;
RLOGE("============= Retrying RIL_Init without a client id. This is only required for very old versions,");
RLOGE("============= and you're likely to have more radio breakage elsewhere!");
funcs = rilInit(&s_rilEnv, argc, s_argv);
}
#endif
//注册得到的reference的回调函数
RIL_register(funcs);
done:
while(1) {
// sleep(UINT32_MAX) seems to return immediately on bionic
sleep(0x00ffffff);
}
}
