Fixed a buffer overflow caused by our R5 select() emulation.

Added missing uname() function which is needed for full R5 compatibility.
It seems that nearly all apps are working now. I could finally run Vision (BONE and R5), BeShare (quick test only), lynx, Net+, etc.
Apps that don't work: Mozilla for BONE, some ssh binary that I downloaded, Be's ftp when not in passive mode.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9098 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/network/libnet/compat.c

@@ -142,3 +142,23 @@ _EXPORT int getpassword(char * pwd, size_t length)
 }
 
 
+struct utsname {
+	char sysname[32];
+	char nodename[32];
+	char release[32];
+	char version[32];
+	char machine[32];
+};
+int uname(struct utsname *name);
+_EXPORT int uname(struct utsname *name)
+{
+	if(!name)
+		return B_ERROR;
+	
+	strcpy(name->sysname, "BeOS");
+	strcpy(name->nodename, "trantor");
+	strcpy(name->release, "5.0");
+	strcpy(name->version, "1000009");
+	strcpy(name->machine, "BePC");
+	return B_OK;
+}

src/kits/network/libnet/select.c

@@ -146,16 +146,17 @@ _EXPORT int select(int nbits, struct fd_set * rbits,
 	case B_WOULD_BLOCK:
 	case B_TIMED_OUT:	// logicly, 'n' should stay to 0 in this case...
 		n = 0;
+		// IMPORTANT: memcpy uses the old R5 fd_bits size (sizeof(unsigned) * 8)!
 		if (rbits) {
-			memcpy(rbits, &rss->rbits, sizeof(*rbits));
+			memcpy(rbits, &rss->rbits, sizeof(unsigned) * 8);
 			n += fd_set_count(rbits, nbits);
 		};
 		if (wbits) {
-			memcpy(wbits, &rss->wbits, sizeof(*wbits));
+			memcpy(wbits, &rss->wbits, sizeof(unsigned) * 8);
 			n += fd_set_count(wbits, nbits);
 		};
 		if (ebits) {
-			memcpy(ebits, &rss->ebits, sizeof(*ebits));
+			memcpy(ebits, &rss->ebits, sizeof(unsigned) * 8);
 			n += fd_set_count(ebits, nbits);
 		};
 		break;