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-rw-r--r--src/os_unix.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/os_unix.c b/src/os_unix.c
index ca6213943..21ec0fda9 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -4168,11 +4168,19 @@ static int unixShmMap(
** the requested memory region.
*/
if( !bExtend ) goto shmpage_out;
+#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE
+ if( osFallocate(pShmNode->h, sStat.st_size, nByte)!=0 ){
+ rc = unixLogError(SQLITE_IOERR_SHMSIZE, "fallocate",
+ pShmNode->zFilename);
+ goto shmpage_out;
+ }
+#else
if( robust_ftruncate(pShmNode->h, nByte) ){
rc = unixLogError(SQLITE_IOERR_SHMSIZE, "ftruncate",
pShmNode->zFilename);
goto shmpage_out;
}
+#endif
}
}