Mercurial > gnulib
view m4/futimens.m4 @ 40140:81f075eaa990
ptsname_r: Work around bug on Android 4.3.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define
HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is
correct.
* lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R
is defined, just fix the return value.
* doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword:
The behaviour of musl libc is nothing to be "fixed", since it is
compliant with the next POSIX standard.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 15:23:19 +0100 |
parents | b06060465f09 |
children |
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# serial 7 # See if we need to provide futimens replacement. dnl Copyright (C) 2009-2019 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. # Written by Eric Blake. AC_DEFUN([gl_FUNC_FUTIMENS], [ AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([futimens]) if test $ac_cv_func_futimens = no; then HAVE_FUTIMENS=0 else AC_CACHE_CHECK([whether futimens works], [gl_cv_func_futimens_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <fcntl.h> #include <sys/stat.h> #include <unistd.h> #include <errno.h> ]], [[struct timespec ts[2]; int fd = creat ("conftest.file", 0600); struct stat st; if (fd < 0) return 1; ts[0].tv_sec = 1; ts[0].tv_nsec = UTIME_OMIT; ts[1].tv_sec = 1; ts[1].tv_nsec = UTIME_NOW; errno = 0; if (futimens (AT_FDCWD, NULL) == 0) return 2; if (errno != EBADF) return 3; if (futimens (fd, ts)) return 4; sleep (1); ts[0].tv_nsec = UTIME_NOW; ts[1].tv_nsec = UTIME_OMIT; if (futimens (fd, ts)) return 5; if (fstat (fd, &st)) return 6; if (st.st_ctime < st.st_atime) return 7; ]])], [gl_cv_func_futimens_works=yes], [gl_cv_func_futimens_works=no], [gl_cv_func_futimens_works="guessing yes"]) rm -f conftest.file]) if test "$gl_cv_func_futimens_works" = no; then REPLACE_FUTIMENS=1 fi fi ])