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-rw-r--r--bits/fcntl.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/bits/fcntl.h b/bits/fcntl.h
index ddf7ab2b61..65b366ab7f 100644
--- a/bits/fcntl.h
+++ b/bits/fcntl.h
@@ -44,6 +44,10 @@
# define O_NOFOLLOW 0x00000100 /* Do not follow links. */
# define O_CLOEXEC 0x00400000 /* Set close_on_exec. */
#endif
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
+# define O_DSYNC 0x00010000 /* Synchronize data. */
+# define O_RSYNC 0x00020000 /* Synchronize read operations. */
+#endif
/* All opens support large file sizes, so there is no flag bit for this. */
#ifdef __USE_LARGEFILE64