Fixed "Operation not permitted" error on reading an empty file: FUSE read/write ops should return a number of bytes actually read/written or -errno on error.

git-svn-id: http://exfat.googlecode.com/svn/trunk@336 60bc1c72-a15a-11de-b98f-4500b42dc123

1 files changed, 12 insertions, 6 deletions

diff --git a/fuse/main.c b/fuse/main.c
index 1527347..b939164 100644
--- a/fuse/main.c
+++ b/fuse/main.c
@@ -155,19 +155,25 @@ static int fuse_exfat_release(const char* path, struct fuse_file_info* fi)
 static int fuse_exfat_read(const char* path, char* buffer, size_t size,
 		off_t offset, struct fuse_file_info* fi)
 {
+	ssize_t ret;
+
 	exfat_debug("[%s] %s (%zu bytes)", __func__, path, size);
-	if (exfat_generic_pread(&ef, get_node(fi), buffer, size, offset) != size)
-		return EOF;
-	return size;
+	ret = exfat_generic_pread(&ef, get_node(fi), buffer, size, offset);
+	if (ret < 0)
+		return -EIO;
+	return ret;
 }
 
 static int fuse_exfat_write(const char* path, const char* buffer, size_t size,
 		off_t offset, struct fuse_file_info* fi)
 {
+	ssize_t ret;
+
 	exfat_debug("[%s] %s (%zu bytes)", __func__, path, size);
-	if (exfat_generic_pwrite(&ef, get_node(fi), buffer, size, offset) != size)
-		return EOF;
-	return size;
+	ret = exfat_generic_pwrite(&ef, get_node(fi), buffer, size, offset);
+	if (ret < 0)
+		return -EIO;
+	return ret;
 }
 
 static int fuse_exfat_unlink(const char* path)