diff options
Diffstat (limited to 'm4/utimes.m4')
-rw-r--r-- | m4/utimes.m4 | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/m4/utimes.m4 b/m4/utimes.m4 deleted file mode 100644 index 7efb2b026..000000000 --- a/m4/utimes.m4 +++ /dev/null @@ -1,83 +0,0 @@ -# Detect some bugs in glibc's implementation of utimes. - -dnl Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -# See if we need to work around bugs in glibc's implementation of -# utimes from 2003-07-12 to 2003-09-17. -# First, there was a bug that would make utimes set mtime -# and atime to zero (1970-01-01) unconditionally. -# Then, there was code to round rather than truncate. -# Then, there was an implementation (sparc64, Linux-2.4.28, glibc-2.3.3) -# that didn't honor the NULL-means-set-to-current-time semantics. -# Finally, there was also a version of utimes that failed on read-only -# files, while utime worked fine (linux-2.2.20, glibc-2.2.5). -# -# From Jim Meyering, with suggestions from Paul Eggert. - -AC_DEFUN([gl_FUNC_UTIMES], -[ - AC_CACHE_CHECK([determine whether the utimes function works], - gl_cv_func_working_utimes, - [ - AC_RUN_IFELSE([AC_LANG_SOURCE([[ -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <sys/time.h> -#include <time.h> -#include <unistd.h> -#include <stdlib.h> -#include <stdio.h> -#include <utime.h> - -int -main () -{ - static struct timeval timeval[2] = {{9, 10}, {999999, 999999}}; - struct stat sbuf; - char const *file = "conftest.utimes"; - FILE *f; - time_t now; - int fd; - - int ok = ((f = fopen (file, "w")) - && fclose (f) == 0 - && utimes (file, timeval) == 0 - && lstat (file, &sbuf) == 0 - && sbuf.st_atime == timeval[0].tv_sec - && sbuf.st_mtime == timeval[1].tv_sec); - unlink (file); - if (!ok) - exit (1); - - ok = - ((f = fopen (file, "w")) - && fclose (f) == 0 - && time (&now) != (time_t)-1 - && utimes (file, NULL) == 0 - && lstat (file, &sbuf) == 0 - && now - sbuf.st_atime <= 2 - && now - sbuf.st_mtime <= 2); - unlink (file); - if (!ok) - exit (1); - - ok = (0 <= (fd = open (file, O_WRONLY|O_CREAT, 0444)) - && close (fd) == 0 - && utimes (file, NULL) == 0); - unlink (file); - - exit (!ok); -} - ]])], - [gl_cv_func_working_utimes=yes], - [gl_cv_func_working_utimes=no], - [gl_cv_func_working_utimes=no])]) - - if test $gl_cv_func_working_utimes = yes; then - AC_DEFINE([HAVE_WORKING_UTIMES], 1, [Define if utimes works properly. ]) - fi -]) |