1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
AC_DEFUN([DOVECOT_GLIBC], [
dnl * Old glibcs have broken posix_fallocate(). Make sure not to use it.
dnl * It may also be broken in AIX.
AC_CACHE_CHECK([whether posix_fallocate() works],i_cv_posix_fallocate_works,[
AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#define _XOPEN_SOURCE 600
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#if defined(__GLIBC__) && (__GLIBC__ < 2 || __GLIBC_MINOR__ < 7)
possibly broken posix_fallocate
#endif
]], [[
int fd = creat("conftest.temp", 0600);
int ret;
if (fd == -1) {
perror("creat()");
return 2;
}
ret = posix_fallocate(fd, 1024, 1024) < 0 ? 1 : 0;
unlink("conftest.temp");
return ret;
]])],[
i_cv_posix_fallocate_works=yes
], [
i_cv_posix_fallocate_works=no
],[])
])
AS_IF([test $i_cv_posix_fallocate_works = yes], [
AC_DEFINE(HAVE_POSIX_FALLOCATE,, [Define if you have a working posix_fallocate()])
])
])
|
