From 396f32c98eeef66f67c87336deab94774db00650 Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 17 Feb 2003 05:17:46 +0000
Subject: * win32/win32.c (link): implement with CreateHardLink().

* win32/win32.c, win32/win32.h (rb_w32_utime): enable utime() to
  directory if on NT. [new] (ruby-bugs-ja:PR#393)


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3501 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 win32/win32.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 win32/win32.h |  4 ++-
 2 files changed, 96 insertions(+), 1 deletion(-)

(limited to 'win32')

diff --git a/win32/win32.c b/win32/win32.c
index 37aa0d0cf4..f19976934e 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -2499,7 +2499,35 @@ kill(int pid, int sig)
 int
 link(char *from, char *to)
 {
+    static BOOL (WINAPI *pCreateHardLink)(LPCTSTR, LPCTSTR, LPSECURITY_ATTRIBUTES) = NULL;
+    static int myerrno = 0;
+
+    if (!pCreateHardLink && !myerrno) {
+	HANDLE hKernel;
+
+	hKernel = GetModuleHandle("kernel32.dll");
+	if (hKernel) {
+	    pCreateHardLink = (BOOL (WINAPI *)(LPCTSTR, LPCTSTR, LPSECURITY_ATTRIBUTES))GetProcAddress(hKernel, "CreateHardLinkA");
+	    if (!pCreateHardLink) {
+		myerrno = GetLastError();
+	    }
+	    CloseHandle(hKernel);
+	}
+	else {
+	    myerrno = GetLastError();
+	}
+    }
+    if (!pCreateHardLink) {
+	errno = myerrno;
 	return -1;
+    }
+
+    if (!pCreateHardLink(to, from, NULL)) {
+	errno = GetLastError();
+	return -1;
+    }
+
+    return 0;
 }
 
 int
@@ -3083,3 +3111,68 @@ rb_w32_close(int fd)
     }
     return 0;
 }
+
+static int
+unixtime_to_filetime(time_t time, FILETIME *ft)
+{
+    struct tm *tm;
+    SYSTEMTIME st;
+
+    tm = gmtime(&time);
+    st.wYear = tm->tm_year + 1900;
+    st.wMonth = tm->tm_mon + 1;
+    st.wDayOfWeek = tm->tm_wday;
+    st.wDay = tm->tm_mday;
+    st.wHour = tm->tm_hour;
+    st.wMinute = tm->tm_min;
+    st.wSecond = tm->tm_sec;
+    st.wMilliseconds = 0;
+    if (!SystemTimeToFileTime(&st, ft)) {
+	errno = GetLastError();
+	return -1;
+    }
+    return 0;
+}
+
+#undef utime
+#ifdef __BORLANDC__
+#define utime _utime
+#endif
+int
+rb_w32_utime(const char *path, struct utimbuf *times)
+{
+    HANDLE hDir;
+    SYSTEMTIME st;
+    FILETIME atime, mtime;
+    struct tm *tm;
+    struct stat stat;
+    int ret = 0;
+
+    if (rb_w32_stat(path, &stat)) {
+	return -1;
+    }
+    if (stat.st_mode & S_IFDIR == 0 || IsWin95()) {
+	return utime(path, times);
+    }
+
+    if (unixtime_to_filetime(times->actime, &atime)) {
+	return -1;
+    }
+    if (unixtime_to_filetime(times->modtime, &mtime)) {
+	return -1;
+    }
+
+    hDir = CreateFile(path, GENERIC_WRITE, 0, 0, OPEN_EXISTING,
+		      FILE_FLAG_BACKUP_SEMANTICS, 0);
+    if (hDir == INVALID_HANDLE_VALUE) {
+	errno = GetLastError();
+	return -1;
+    }
+    if (!SetFileTime(hDir, NULL, &atime, &mtime)) {
+	errno = GetLastError();
+	ret = -1;
+    }
+    CloseHandle(hDir);
+
+    return ret;
+}
diff --git a/win32/win32.h b/win32/win32.h
index 6880b65a2d..59e0dd694b 100644
--- a/win32/win32.h
+++ b/win32/win32.h
@@ -89,6 +89,7 @@ extern "C++" {
 #undef putchar
 #undef fgetchar
 #undef fputchar
+#undef utime
 #define getc(_stream)		rb_w32_getc(_stream)
 #define putc(_c, _stream)	rb_w32_putc(_c, _stream)
 #define fgetc(_stream)		getc(_stream)
@@ -97,6 +98,7 @@ extern "C++" {
 #define putchar(_c)		rb_w32_putc(_c, stdout)
 #define fgetchar()		getchar()
 #define fputchar(_c)		putchar(_c)
+#define utime(_p, _t)		rb_w32_utime(_p, _t)
 
 #define strcasecmp  stricmp
 #define strncasecmp strnicmp
@@ -121,7 +123,6 @@ extern "C++" {
 #define umask	   _umask
 #define unlink	   _unlink
 #define write	   _write
-#define utime      _utime
 #endif
 #define vsnprintf  _vsnprintf
 #define snprintf   _snprintf
@@ -459,6 +460,7 @@ int  rb_w32_putc(int, FILE*);
 int  rb_w32_getc(FILE*);
 int  rb_w32_close(int);
 int  rb_w32_fclose(FILE*);
+int  rb_w32_utime(const char *, struct utimbuf *);
 #define Sleep(msec) (void)rb_w32_sleep(msec)
 
 /*
-- 
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