Merge branch 'fdm/file-allocate/OTP-10680'

* fdm/file-allocate/OTP-10680:
  Update preloaded prim_file.beam
  erts: Fix xcomp configure for fallocate
  Add file:allocate/3 operation

1 files changed, 38 insertions, 1 deletions

diff --git a/erts/configure.in b/erts/configure.in
index 3256b0cb59..a73bb358a0 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -1075,8 +1075,45 @@ fi
 
 AC_SUBST(ERTS_BUILD_SMP_EMU)
 
-AC_CHECK_FUNCS([posix_fadvise])
+AC_CHECK_FUNCS([posix_fadvise, fallocate])
+AC_CHECK_HEADERS([linux/falloc.h])
 
+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_TRY_RUN([
+        #if !defined(__sun) && !defined(__sun__)
+        #define _XOPEN_SOURCE 600
+        #endif
+        #include <stdio.h>
+        #include <stdlib.h>
+        #include <fcntl.h>
+        #include <unistd.h>
+        #if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 7))
+            possibly broken posix_fallocate
+        #endif
+        int main() {
+            int fd = creat("conftest.temp", 0600);
+            int ret;
+            if (-1 == fd) {
+               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
+    ], [
+        i_cv_posix_fallocate_works=no
+    ])
+])
+if test $i_cv_posix_fallocate_works = yes; then
+   AC_DEFINE(HAVE_POSIX_FALLOCATE,, Define if you have a working posix_fallocate())
+fi
 
 #
 # Figure out if the emulator should use threads. The default is set above