Change naming convention of POSIX emulation layer for Windows

Use prefix w32 instead of posix: Rename posixfile.c, posixio.c to
w32file.c, w32io.c.  Rename posix_accept(), posix_bind(),
posix_close(), posix_fd2socket(), posix_listen(), posix_mkdir(),
posix_setsockopt(), posix_shutdown(), posix_socket() to w32_accept(),
w32_bind(), w32_fd2socket(), w32_list(), w32_mkdir(),
w32_setsockopt(), w32_shutdown(), w32_socket().

src/lib/empthread/ntthread.c

@@ -546,7 +546,7 @@ empth_select(int fd, int flags, struct timeval *timeout)
     hEventObject[0] = WSACreateEvent();
     hEventObject[1] = pThread->hThreadEvent;
 
-    sock = posix_fd2socket(fd);
+    sock = w32_fd2socket(fd);
     CANT_HAPPEN(sock == (SOCKET)-1);
 
     events = 0;

src/lib/w32/sys/socket.h

@@ -40,28 +40,28 @@
 typedef int socklen_t;
 
 #define accept(fd, addr, addrlen) \
-    posix_accept((fd), (addr), (addrlen))
+    w32_accept((fd), (addr), (addrlen))
 #define bind(fd, name, namelen) \
-    posix_bind((fd), (name), (namelen))
+    w32_bind((fd), (name), (namelen))
 #define listen(fd, backlog) \
-    posix_listen((fd), (backlog))
+    w32_listen((fd), (backlog))
 #define setsockopt(fd, level, optname, optval, optlen) \
-    posix_setsockopt((fd), (level), (optname), (optval), (optlen))
+    w32_setsockopt((fd), (level), (optname), (optval), (optlen))
 #define shutdown(fd, how) \
-    posix_shutdown((fd), (how))
+    w32_shutdown((fd), (how))
 #define socket(domain, type, protocol) \
-    posix_socket((domain), (type), (protocol))
+    w32_socket((domain), (type), (protocol))
 
-extern int posix_accept(int fd, struct sockaddr *addr, socklen_t *addrlen);
-extern int posix_bind(int fd, const struct sockaddr *name, socklen_t namelen);
-extern int posix_listen(int fd, int backlog);
-extern int posix_setsockopt(int fd, int level, int optname,
+extern int w32_accept(int fd, struct sockaddr *addr, socklen_t *addrlen);
+extern int w32_bind(int fd, const struct sockaddr *name, socklen_t namelen);
+extern int w32_listen(int fd, int backlog);
+extern int w32_setsockopt(int fd, int level, int optname,
 			  const void *optval, socklen_t optlen);
-extern int posix_shutdown(int fd, int how);
-extern int posix_socket(int domain, int type, int protocol);
+extern int w32_shutdown(int fd, int how);
+extern int w32_socket(int domain, int type, int protocol);
 
 /* Low-level stuff specific to the emulation */
-extern SOCKET posix_fd2socket(int fd);
+extern SOCKET w32_fd2socket(int fd);
 extern void w32_set_winsock_errno(void);
 extern int w32_socket_init(void);
 

src/lib/w32/unistd.h

@@ -60,11 +60,11 @@ extern char *optarg;
 extern int optind, opterr, optopt;
 
 /*
- * posixfile.c
+ * w32file.c
  */
 /* Should be in sys/stat.h */
-#define mkdir(dir, perm)    posix_mkdir((dir), (perm))
-extern int posix_mkdir(const char *dirname, mode_t perm);
+#define mkdir(dir, perm)    w32_mkdir((dir), (perm))
+extern int w32_mkdir(const char *dirname, mode_t perm);
 
 /* Should be in sys/stat.h */
 #ifndef S_IRUSR

src/lib/w32/w32file.c

@@ -25,7 +25,7 @@
  *
  *  ---
  *
- *  posixfile.c: POSIX equivalents for file operations
+ *  w32file.c: POSIX file operations emulation layer for Windows
  *
  *  Known contributors to this file:
  *     Ron Koenderink, 2007
@@ -38,11 +38,11 @@
 #include "unistd.h"
 
 /*
- * POSIX equivalent for mkdir().
- * Windows does not set the permission directly with mkdir().
+ * POSIX-compatible replacement for mkdir().
+ * Windows' mkdir() lacks the second parameter.
  */
 int
-posix_mkdir(const char *dirname, mode_t perm)
+w32_mkdir(const char *dirname, mode_t perm)
 {
     int result;
 

src/lib/w32/w32io.c

@@ -25,7 +25,7 @@
  *
  *  ---
  *
- *  posixio.c: POSIX I/O emulation layer for Windows
+ *  w32io.c: POSIX I/O emulation layer for Windows
  *
  *  Known contributors to this file:
  *     Ron Koenderink, 2007

src/lib/w32/w32sockets.c

@@ -59,7 +59,7 @@
 #define W32_SOCKET_TO_FD(fh) (_open_osfhandle((long)(fh), O_RDWR | O_BINARY))
 
 SOCKET
-posix_fd2socket(int fd)
+w32_fd2socket(int fd)
 {
     return W32_FD_TO_SOCKET(fd);
 }
@@ -124,7 +124,7 @@ w32_set_winsock_errno(void)
  */
 #undef accept
 int
-posix_accept(int fd, struct sockaddr *addr, socklen_t *addrlen)
+w32_accept(int fd, struct sockaddr *addr, socklen_t *addrlen)
 {
     SOCKET sock;
 
@@ -142,7 +142,7 @@ posix_accept(int fd, struct sockaddr *addr, socklen_t *addrlen)
  */
 #undef bind
 int
-posix_bind(int fd, const struct sockaddr *name, socklen_t namelen)
+w32_bind(int fd, const struct sockaddr *name, socklen_t namelen)
 {
     SOCKET_FUNCTION(bind(sock, name, namelen));
 }
@@ -152,7 +152,7 @@ posix_bind(int fd, const struct sockaddr *name, socklen_t namelen)
  */
 #undef listen
 int
-posix_listen(int fd, int backlog)
+w32_listen(int fd, int backlog)
 {
     SOCKET_FUNCTION(listen(sock, backlog));
 }
@@ -162,7 +162,7 @@ posix_listen(int fd, int backlog)
  */
 #undef setsockopt
 int
-posix_setsockopt(int fd, int level, int optname,
+w32_setsockopt(int fd, int level, int optname,
 	       const void *optval, socklen_t optlen)
 {
     /*
@@ -186,7 +186,7 @@ posix_setsockopt(int fd, int level, int optname,
  */
 #undef shutdown
 int
-posix_shutdown(int fd, int how)
+w32_shutdown(int fd, int how)
 {
     SOCKET_FUNCTION(shutdown(sock, how));
 }
@@ -196,7 +196,7 @@ posix_shutdown(int fd, int how)
  */
 #undef socket
 int
-posix_socket(int domain, int type, int protocol)
+w32_socket(int domain, int type, int protocol)
 {
     SOCKET sock;