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-rw-r--r--toys/other/fsync.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/toys/other/fsync.c b/toys/other/fsync.c
new file mode 100644
index 00000000..e6f6c8d9
--- /dev/null
+++ b/toys/other/fsync.c
@@ -0,0 +1,33 @@
+/* fsync.c - Synchronize a file's in-core state with storage device.
+ *
+ * Copyright 2015 Ranjan Kumar <ranjankumar.bth@gmail.comi>
+ *
+ * No Standard.
+
+USE_FSYNC(NEWTOY(fsync, "<1d", TOYFLAG_BIN))
+
+config FSYNC
+ bool "fsync"
+ default y
+ help
+ usage: fsync [-d] [FILE...]
+
+ Synchronize a file's in-core state with storage device.
+
+ -d Avoid syncing metadata.
+*/
+
+#define FOR_fsync
+#include "toys.h"
+
+static void do_fsync(int fd, char *name)
+{
+ if (((toys.optflags & FLAG_d) ? fdatasync(fd) : fsync(fd)))
+ perror_msg("can't sync '%s'", name);
+}
+
+void fsync_main(void)
+{
+ loopfiles_rw(toys.optargs, O_RDONLY|O_NOATIME|O_NOCTTY|O_CLOEXEC,
+ 0, 0, do_fsync);
+}