redo boot around an explicit system volume and fixed kernel/HAL images, redo volumes and filesystem paths around capabilities instead of drive numbers and kernel CWD state, add a capability/security model with derived and revocable handles and security contexts, add port IPC and rssrv to manage the userspace resource namespace and publish the system volume, move process, dll and path loading to userspace and add process builder syscalls, init now supervises rssrv and the session process, redo the syscall ABI around request structs and four arguments, add a volume manager and proper partition arrival/removal handling so FAT and NTFS mount dynamically, clean up the HAL/DDK boundary so drivers don't depend on HAL internals, save fpu state properly now, the serial driver doesn't hang on a missing port, fix AHCI startup races, fix timeout accounting, fix shared mmap writeback, more smoke tests

code/user/personalities/posix/posix_socket.c

@@ -363,7 +363,11 @@ __declspec(dllexport) ssize_t send(int fd, const void* buf, size_t len, int flag
     FD_ENTRY* e = SocketFdGet(fd);
     if (!e) return -1;
     size_t sent = 0;
-    uint32_t s = SysSendSocket(e->KHandle, buf, len, (uint32_t)flags, &sent);
+    SYS_SOCKET_SEND_REQUEST request = {
+        sizeof(SYS_SOCKET_SEND_REQUEST), e->KHandle, (uint32_t)flags,
+        buf, len, &sent
+    };
+    uint32_t s = SysSendSocket(&request);
     if (s != 0) { errno = PosixStatusToErrno(s); return -1; }
     return (ssize_t)sent;
 }
@@ -373,7 +377,11 @@ __declspec(dllexport) ssize_t recv(int fd, void* buf, size_t len, int flags) {
     FD_ENTRY* e = SocketFdGet(fd);
     if (!e) return -1;
     size_t got = 0;
-    uint32_t s = SysRecvSocket(e->KHandle, buf, len, (uint32_t)flags, &got);
+    SYS_SOCKET_RECV_REQUEST request = {
+        sizeof(SYS_SOCKET_RECV_REQUEST), e->KHandle, (uint32_t)flags,
+        buf, len, &got
+    };
+    uint32_t s = SysRecvSocket(&request);
     if (s != 0) { errno = PosixStatusToErrno(s); return -1; }
     return (ssize_t)got;
 }
@@ -388,6 +396,7 @@ __declspec(dllexport) ssize_t sendto(int fd, const void* buf, size_t len, int fl
     size_t sent = 0;
     SYS_SOCKET_SEND_TO_REQUEST req;
     memset(&req, 0, sizeof(req));
+    req.Size = sizeof(req);
     req.Buffer = buf;
     req.Length = len;
     req.Flags = (uint32_t)flags;
@@ -410,6 +419,7 @@ __declspec(dllexport) ssize_t recvfrom(int fd, void* buf, size_t len, int flags,
     size_t got = 0;
     SYS_SOCKET_RECV_FROM_REQUEST req;
     memset(&req, 0, sizeof(req));
+    req.Size = sizeof(req);
     req.Buffer = buf;
     req.Length = len;
     req.Flags = (uint32_t)flags;
@@ -463,6 +473,7 @@ __declspec(dllexport) int setsockopt(int fd, int level, int optname, const void*
 
     SYS_SOCKET_OPTION_REQUEST req;
     memset(&req, 0, sizeof(req));
+    req.Size = sizeof(req);
     req.Option = option;
     req.Value = &value;
     req.ValueSize = sizeof(value);
@@ -487,6 +498,7 @@ __declspec(dllexport) int getsockopt(int fd, int level, int optname, void* optva
     size_t actual = sizeof(value);
     SYS_SOCKET_OPTION_REQUEST req;
     memset(&req, 0, sizeof(req));
+    req.Size = sizeof(req);
     req.Option = option;
     req.Value = &value;
     req.ValueSize = sizeof(value);
@@ -605,6 +617,7 @@ static int ResolveNameFamily(const char* name, int family, SYS_SOCKET_ADDRESS* o
     size_t size = sizeof(*out);
     SYS_RESOLVE_HOST_REQUEST req;
     memset(&req, 0, sizeof(req));
+    req.Size = sizeof(req);
     req.Name = SysSvFromCstr(name);
     req.Family = family == AF_INET6 ? SYS_AF_INET6 : SYS_AF_INET;
     req.AddressOut = out;