rewrite comments into one, unified style

code/user/personalities/posix/posix_fd.c

@@ -1,10 +1,12 @@
-// posix_fd.c - file descriptor table
+// POSIX compatibility support for posix fd.
+
 #include <ntlite/syscall.h>
 #include "posix.h"
 #include "posix_fd.h"
 
 int errno = 0;
 
+// Implements the status To Errno operation.
 int PosixStatusToErrno(uint32_t s) {
     switch (s) {
         case 0x0000: return 0;       // STATUS_SUCCESS
@@ -26,6 +28,7 @@ int PosixStatusToErrno(uint32_t s) {
 
 static FD_ENTRY gFdTable[FD_TABLE_PIDS][FD_MAX];
 
+// Implements the fd Init operation.
 __declspec(dllexport) void PosixFdInit(void) {
     uint32_t pid = SysGetCurrentPid();
     uint32_t slot = pid % FD_TABLE_PIDS;
@@ -40,6 +43,7 @@ __declspec(dllexport) void PosixFdInit(void) {
     gFdTable[slot][2] = (FD_ENTRY){ FD_CONSOLE_W, 0, true };
 }
 
+// Implements the fd Alloc operation.
 __declspec(dllexport) int FdAlloc(uint32_t pid, FD_TYPE type, uint32_t khandle) {
     uint32_t slot = pid % FD_TABLE_PIDS;
     for (int fd = 3; fd < FD_MAX; fd++) {
@@ -52,6 +56,7 @@ __declspec(dllexport) int FdAlloc(uint32_t pid, FD_TYPE type, uint32_t khandle)
     return -1;
 }
 
+// Implements the fd Get operation.
 __declspec(dllexport) FD_ENTRY* FdGet(uint32_t pid, int fd) {
     if (fd < 0 || fd >= FD_MAX) { errno = EBADF; return (FD_ENTRY*)0; }
     uint32_t slot = pid % FD_TABLE_PIDS;
@@ -60,6 +65,7 @@ __declspec(dllexport) FD_ENTRY* FdGet(uint32_t pid, int fd) {
     return e;
 }
 
+// Implements the fd Free operation.
 __declspec(dllexport) void FdFree(uint32_t pid, int fd) {
     if (fd < 0 || fd >= FD_MAX) return;
     uint32_t slot = pid % FD_TABLE_PIDS;