win32: Replace open/fopen to support /dev/null

2 files changed, 38 insertions, 0 deletions

diff --git a/include/mingw.h b/include/mingw.h
index 57fa6177d..ba73c362e 100644
--- a/include/mingw.h
+++ b/include/mingw.h
@@ -120,6 +120,8 @@ NOIMPL(sigfillset,int *mask UNUSED_PARAM);
 #define fseeko(f,o,w) fseek(f,o,w)
 
 int fdprintf(int fd, const char *format, ...);
+FILE* mingw_fopen(const char *filename, const char *mode);
+#define fopen mingw_fopen
 
 /*
  * ANSI emulation wrappers
@@ -269,6 +271,7 @@ IMPL(fsync,int,0,int fd UNUSED_PARAM);
 NOIMPL(kill,pid_t pid UNUSED_PARAM, int sig UNUSED_PARAM);
 int link(const char *oldpath, const char *newpath);
 NOIMPL(mknod,const char *name UNUSED_PARAM, mode_t mode UNUSED_PARAM, dev_t device UNUSED_PARAM);
+int mingw_open (const char *filename, int oflags, ...);
 int pipe(int filedes[2]);
 NOIMPL(readlink,const char *path UNUSED_PARAM, char *buf UNUSED_PARAM, size_t bufsiz UNUSED_PARAM);
 NOIMPL(setgid,gid_t gid UNUSED_PARAM);
@@ -282,6 +285,7 @@ NOIMPL(vfork,void);
 
 #define getcwd mingw_getcwd
 #define lchown(a,b,c) chown(a,b,c)
+#define open mingw_open
 #define unlink mingw_unlink
 
 /*
diff --git a/win32/mingw.c b/win32/mingw.c
index 5604fdda5..cc266462f 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -115,6 +115,40 @@ static int err_win_to_posix(DWORD winerr)
         return error;
 }
 
+#undef open
+int mingw_open (const char *filename, int oflags, ...)
+{
+        va_list args;
+        unsigned mode;
+        int fd;
+
+        va_start(args, oflags);
+        mode = va_arg(args, int);
+        va_end(args);
+
+        if (oflags & O_NONBLOCK) {
+                errno = ENOSYS;
+                return -1;
+        }
+        if (!strcmp(filename, "/dev/null"))
+                filename = "nul";
+        fd = open(filename, oflags, mode);
+        if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
+                DWORD attrs = GetFileAttributes(filename);
+                if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
+                        errno = EISDIR;
+        }
+        return fd;
+}
+
+#undef fopen
+FILE *mingw_fopen (const char *filename, const char *mode)
+{
+        if (!strcmp(filename, "/dev/null"))
+                filename = "nul";
+        return fopen(filename, mode);
+}
+
 unsigned int sleep (unsigned int seconds)
 {
         Sleep(seconds*1000);