From d735af94fa54a5555ce725f1d4e6b97b812b6603 Mon Sep 17 00:00:00 2001
From: Yuri Per <yuri@acronis.com>
Date: Sun, 3 Nov 2019 11:44:31 +0200
Subject: Implement lseek operation (#457)

---
 example/passthrough.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'example/passthrough.c')

diff --git a/example/passthrough.c b/example/passthrough.c
index 6de9fc1..012bd31 100644
--- a/example/passthrough.c
+++ b/example/passthrough.c
@@ -484,6 +484,28 @@ static ssize_t xmp_copy_file_range(const char *path_in,
 }
 #endif
 
+static off_t xmp_lseek(const char *path, off_t off, int whence, struct fuse_file_info *fi)
+{
+	int fd;
+	off_t res;
+
+	if (fi == NULL)
+		fd = open(path, O_RDONLY);
+	else
+		fd = fi->fh;
+
+	if (fd == -1)
+		return -errno;
+
+	res = lseek(fd, off, whence);
+	if (res == -1)
+		res = -errno;
+
+	if (fi == NULL)
+		close(fd);
+	return res;
+}
+
 static struct fuse_operations xmp_oper = {
 	.init           = xmp_init,
 	.getattr	= xmp_getattr,
@@ -522,6 +544,7 @@ static struct fuse_operations xmp_oper = {
 #ifdef HAVE_COPY_FILE_RANGE
 	.copy_file_range = xmp_copy_file_range,
 #endif
+	.lseek		= xmp_lseek,
 };
 
 int main(int argc, char *argv[])
-- 
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