Windows: Add a custom implementation for utime().
This is a necessary pendant to our lstat implementation: MSVCRT's implementations of lstat and utime do some adjustments if daylight saving time is in effect, but our lstat implementation doesn't do these adjustments and report the correct UTC time. With this implementation we omit the adjustments in utime() as well and always write UTC. Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Johannes Sixt committed
Sep 7, 2007 at 13:05 UTC
7c0ffa1cb753f9b909dfb3bc7a5d5417b8de39c2
2 files changed
+30
compat/mingw.c
+27
@@ -155,6 +155,33 @@ int mingw_fstat(int fd, struct stat *buf)
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return -1;
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}
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+static inline void time_t_to_filetime(time_t t, FILETIME *ft)
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+{
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+ long long winTime = t * 10000000LL + 116444736000000000LL;
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+ ft->dwLowDateTime = winTime;
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+ ft->dwHighDateTime = winTime >> 32;
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+}
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+
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+int mingw_utime (const char *file_name, const struct utimbuf *times)
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+{
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+ FILETIME mft, aft;
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+ int fh, rc;
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+
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+ /* must have write permission */
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+ if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
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+ return -1;
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+
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+ time_t_to_filetime(times->modtime, &mft);
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+ time_t_to_filetime(times->actime, &aft);
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+ if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
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+ errno = EINVAL;
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+ rc = -1;
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+ } else
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+ rc = 0;
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+ close(fh);
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+ return rc;
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+}
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+
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unsigned int sleep (unsigned int seconds)
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{
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Sleep(seconds*1000);
compat/mingw.h
+3
@@ -168,6 +168,9 @@ int mingw_fstat(int fd, struct stat *buf);
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#define lstat mingw_lstat
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#define stat(x,y) mingw_lstat(x,y)
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+int mingw_utime(const char *file_name, const struct utimbuf *times);
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+#define utime mingw_utime
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+
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pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env);
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void mingw_execvp(const char *cmd, char *const *argv);
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#define execvp mingw_execvp