init.patch

diff -uprBN /opt/new/newdownload/system/core/init/builtins.c initv1.5/builtins.c
--- /opt/new/newdownload/system/core/init/builtins.c	2009-06-15 17:32:15.000000000 -0400
+++ initv1.5/builtins.c	2009-07-06 23:35:25.000000000 -0400
@@ -36,6 +36,11 @@
 #include "devices.h"
 
 #include <private/android_filesystem_config.h>
+/*zqqa add*/
+#include <linux/loop.h>
+typedef struct loop_info64 bb_loop_info;
+#define BB_LOOP_SET_STATUS LOOP_SET_STATUS64
+#define BB_LOOP_GET_STATUS LOOP_GET_STATUS64
 
 void add_environment(const char *name, const char *value);
 
@@ -95,6 +100,66 @@ static int setkey(struct kbentry *kbe)
     return ret;
 }
 
+/* Returns 0 if mounted read-only, <0 for error.
+ */
+static int setloop(char *device, const char *file, unsigned long long offset)
+{
+	bb_loop_info loopinfo;
+	struct stat statbuf;
+	int dfd, ffd, mode, rc = -1;
+
+	/* Open the file. */
+	mode = O_RDONLY;
+	ffd = open(file, mode);
+	if (ffd < 0)
+	 return -errno;
+
+	/* Ran out of block devices, return failure.  */
+	if (stat(device, &statbuf) || !S_ISBLK(statbuf.st_mode)) {
+		return -errno;
+	 }
+	/* Open the sucker and check its loopiness.  */
+	dfd = open(device, mode);
+	if (dfd < 0)
+		return -errno;
+
+	rc = ioctl(dfd, BB_LOOP_GET_STATUS, &loopinfo);
+
+	/* If device is free, claim it.  */
+	if (rc && errno == ENXIO) {
+		memset(&loopinfo, 0, sizeof(loopinfo));
+		strncpy((char *)loopinfo.lo_file_name, file, LO_NAME_SIZE);
+		loopinfo.lo_offset = offset;
+		/* Associate free loop device with file.  */
+		if (!ioctl(dfd, LOOP_SET_FD, ffd)) {
+			if (!ioctl(dfd, BB_LOOP_SET_STATUS, &loopinfo))
+				rc = 0;
+			else
+				ioctl(dfd, LOOP_CLR_FD, 0);
+		}
+    } 
+	else
+	   return -errno;
+
+	close(dfd);
+	close(ffd);
+
+	return rc;
+}
+static int set_ip_using(int skfd, const char *interface, int c, unsigned long ip)
+{
+    struct ifreq ifr;
+    struct sockaddr_in sin;
+
+    strlcpy(ifr.ifr_name, interface, IFNAMSIZ);
+    memset(&sin, 0, sizeof(struct sockaddr));
+    sin.sin_family = AF_INET;
+    sin.sin_addr.s_addr = ip;
+    memcpy(&ifr.ifr_addr, &sin, sizeof(struct sockaddr));
+    if (ioctl(skfd, c, &ifr) < 0)
+	return -1;
+    return 0;
+}
 static int __ifupdown(const char *interface, int up)
 {
     struct ifreq ifr;
@@ -123,6 +188,43 @@ done:
     return ret;
 }
 
+static int __ifupdown2(const char *interface, const char *ip,const char *nm,int up)
+{
+    struct ifreq ifr;
+    int s, ret;
+
+    strlcpy(ifr.ifr_name, interface, IFNAMSIZ);
+
+    s = socket(AF_INET, SOCK_DGRAM, 0);
+    if (s < 0)
+        return -1;
+
+    ret = ioctl(s, SIOCGIFFLAGS, &ifr);
+    if (ret < 0) {
+        goto done;
+    }
+
+    if (up)
+	ifr.ifr_flags |= IFF_UP;
+    else
+        ifr.ifr_flags &= ~IFF_UP;
+
+    ret = ioctl(s, SIOCSIFFLAGS, &ifr);
+    
+    //test
+    /*if (set_ip_using(s, interface, SIOCSIFADDR, inet_addr(ip)) == -1)
+     return -1;
+    if (set_ip_using(s, interface, SIOCSIFNETMASK, inet_addr(nm)) == -1)
+     return -1;
+    if (set_ip_using(s, interface, SIOCSIFBRDADDR, bc) == -1)
+      return -1;
+    */
+    //test
+done:
+    close(s);
+    return ret;
+}
+
 static void service_start_if_not_disabled(struct service *svc)
 {
     if (!(svc->flags & SVC_DISABLED)) {
@@ -169,7 +271,10 @@ int do_hostname(int nargs, char **args)
 
 int do_ifup(int nargs, char **args)
 {
-    return __ifupdown(args[1], 1);
+    if(!strcmp(args[1],"lo"))
+    return __ifupdown(args[1],1);
+	else
+    return __ifupdown2(args[1], args[2],args[3],1);
 }
 
 
@@ -413,6 +518,18 @@ int do_loglevel(int nargs, char **args) 
     }
     return -1;
 }
+/*losetup loopname filename*/
+int do_losetup(int nargs, char **args) {
+
+	/* max 2 args,  no option*/
+    if (nargs != 3)
+        return -1;
+
+	if (setloop(args[1], args[2], 0) < 0)
+		return -2;
+
+	return 0;
+}
 
 int do_device(int nargs, char **args) {
     int len;
diff -uprBN /opt/new/newdownload/system/core/init/parser.c initv1.5/parser.c
--- /opt/new/newdownload/system/core/init/parser.c	2009-06-15 17:32:15.000000000 -0400
+++ initv1.5/parser.c	2009-07-06 23:43:23.000000000 -0400
@@ -163,6 +163,7 @@ int lookup_keyword(const char *s)
         break;
     case 'l':
         if (!strcmp(s, "oglevel")) return K_loglevel;
+		if (!strcmp(s, "osetup")) return K_losetup;
         break;
     case 'm':
         if (!strcmp(s, "kdir")) return K_mkdir;