example/passthrough: use fi->fh for read, write, fallocate

No reason not to use it. May even be a little faster and will
consume less resources :-).

diff --git a/example/passthrough.c b/example/passthrough.c
index 67663abb76a59e7cd7b66bc21ea7c5db1ff4e7f1..d5edc04dff0fcbbc0cdca971a979509f30a5a385 100644 (file)
--- a/example/passthrough.c
+++ b/example/passthrough.c
@@ -296,8 +296,11 @@ static int xmp_read(const char *path, char *buf, size_t size, off_t offset,
        int fd;
        int res;
 
-       (void) fi;
-       fd = open(path, O_RDONLY);
+       if(fi == NULL)
+               fd = open(path, O_RDONLY);
+       else
+               fd = fi->fh;
+       
        if (fd == -1)
                return -errno;
 
@@ -305,7 +308,8 @@ static int xmp_read(const char *path, char *buf, size_t size, off_t offset,
        if (res == -1)
                res = -errno;
 
-       close(fd);
+       if(fi == NULL)
+               close(fd);
        return res;
 }
 
@@ -316,7 +320,11 @@ static int xmp_write(const char *path, const char *buf, size_t size,
        int res;
 
        (void) fi;
-       fd = open(path, O_WRONLY);
+       if(fi == NULL)
+               fd = open(path, O_WRONLY);
+       else
+               fd = fi->fh;
+       
        if (fd == -1)
                return -errno;
 
@@ -324,7 +332,8 @@ static int xmp_write(const char *path, const char *buf, size_t size,
        if (res == -1)
                res = -errno;
 
-       close(fd);
+       if(fi == NULL)
+               close(fd);
        return res;
 }
 
@@ -370,13 +379,18 @@ static int xmp_fallocate(const char *path, int mode,
        if (mode)
                return -EOPNOTSUPP;
 
-       fd = open(path, O_WRONLY);
+       if(fi == NULL)
+               fd = open(path, O_WRONLY);
+       else
+               fd = fi->fh;
+       
        if (fd == -1)
                return -errno;
 
        res = -posix_fallocate(fd, offset, length);
 
-       close(fd);
+       if(fi == NULL)
+               close(fd);
        return res;
 }
 #endif