[PATCH 1/2] src/godown: support f2fs triggering specific ioctl

[Jaegeuk Kim <jaegeuk@kernel.org>]

This patch triggers the F2FS-related ioctl for godown.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 src/godown.c | 88 ++++++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 65 insertions(+), 23 deletions(-)

diff --git a/src/godown.c b/src/godown.c
index b140a41..b44790b 100644
--- a/src/godown.c
+++ b/src/godown.c
@@ -19,33 +19,82 @@
 #include <syslog.h>
 #include "global.h"
 
+#define F2FS_IOCTL_MAGIC	0xf5
+#define F2FS_IOC_GOINGDOWN	_IO(F2FS_IOCTL_MAGIC, 6)
+
+enum ftypes {
+	XFS_FS,
+	F2FS_FS,
+};
+
 static char *xprogname;
+static char *mnt_dir;
+static int verbose_opt = 0;
+static int flushlog_opt = 0;
 
+static enum ftypes fs = XFS_FS;
 
 static void
 usage(void)
 {
-	fprintf(stderr, "usage: %s [-f] [-v] mnt-dir\n", xprogname);
+	fprintf(stderr, "usage: %s [-f] [-v] [-s 0/1] mnt-dir\n", xprogname);
+}
+
+static int
+xfs_goingdown(int fd)
+{
+	int flag;
+
+	flag = (flushlog_opt ? XFS_FSOP_GOING_FLAGS_LOGFLUSH
+			    : XFS_FSOP_GOING_FLAGS_NOLOGFLUSH);
+	if (verbose_opt) {
+		printf("Calling XFS_IOC_GOINGDOWN\n");
+	}
+
+	syslog(LOG_WARNING, "xfstests-induced forced shutdown of %s:\n",
+			mnt_dir);
+	if ((xfsctl(mnt_dir, fd, XFS_IOC_GOINGDOWN, &flag)) == -1) {
+		fprintf(stderr, "%s: error on xfsctl(GOINGDOWN) of \"%s\": %s\n",
+				xprogname, mnt_dir, strerror(errno));
+		return 1;
+	}
+	return 0;
+}
+
+static int
+f2fs_goingdown(int fd)
+{
+	if (verbose_opt) {
+		printf("Calling F2FS_IOC_GOINGDOWN\n");
+	}
+	syslog(LOG_WARNING, "xfstests-induced forced shutdown of %s:\n",
+			mnt_dir);
+	if ((ioctl(fd, F2FS_IOC_GOINGDOWN)) == -1) {
+		fprintf(stderr, "%s: error on ioctl(GOINGDOWN) of \"%s\": %s\n",
+				xprogname, mnt_dir, strerror(errno));
+		return 1;
+	}
+	return 0;
+
 }
 
 int
 main(int argc, char *argv[])
 {
-	int c;
-	int flag;
-	int flushlog_opt = 0;
-	int verbose_opt = 0;
+	int c, fd;
 	struct stat st;
-	char *mnt_dir;
-	int fd;
+	int ret = 0;
 
       	xprogname = argv[0];
 
-	while ((c = getopt(argc, argv, "fv")) != -1) {
+	while ((c = getopt(argc, argv, "fs:v")) != -1) {
 		switch (c) {
 		case 'f':
 			flushlog_opt = 1;
 			break;
+		case 's':
+			fs = atoi(optarg);
+			break;
 		case 'v':
 			verbose_opt = 1;
 			break;
@@ -94,10 +143,6 @@ main(int argc, char *argv[])
 	}
 #endif
 
-
-	flag = (flushlog_opt ? XFS_FSOP_GOING_FLAGS_LOGFLUSH 
-			    : XFS_FSOP_GOING_FLAGS_NOLOGFLUSH);
-
 	if (verbose_opt) {
 		printf("Opening \"%s\"\n", mnt_dir);
 	}
@@ -107,18 +152,15 @@ main(int argc, char *argv[])
 		return 1;
 	}
 
-	if (verbose_opt) {
-		printf("Calling XFS_IOC_GOINGDOWN\n");
+	switch (fs) {
+	case XFS_FS:
+		ret = xfs_goingdown(fd);
+		break;
+	case F2FS_FS:
+		ret = f2fs_goingdown(fd);
+		break;
 	}
-	syslog(LOG_WARNING, "xfstests-induced forced shutdown of %s:\n",
-		mnt_dir);
-	if ((xfsctl(mnt_dir, fd, XFS_IOC_GOINGDOWN, &flag)) == -1) {
-		fprintf(stderr, "%s: error on xfsctl(GOINGDOWN) of \"%s\": %s\n",
-			xprogname, mnt_dir, strerror(errno));
-		return 1;
-	}
-
 	close(fd);
 
-	return 0;
+	return ret;
 }
-- 
2.1.1