added file locking

1 files changed, 50 insertions, 35 deletions

diff --git a/include/fuse_lowlevel.h b/include/fuse_lowlevel.h
index deab718..ddead68 100644
--- a/include/fuse_lowlevel.h
+++ b/include/fuse_lowlevel.h
@@ -39,8 +39,16 @@ struct fuse_entry_param {
     double entry_timeout;
 };
 
+struct fuse_lock_param {
+    int type;
+    off_t start;
+    off_t end;
+    unsigned long long owner;
+    pid_t pid;
+};
+
 struct fuse_ctx {
-        /** User ID of the calling process */
+    /** User ID of the calling process */
     uid_t uid;
 
     /** Group ID of the calling process */
@@ -62,50 +70,54 @@ struct fuse_ctx {
 /* ------------------------------------------ */
 
 struct fuse_ll_operations {
-    void* (*init)   (void *);
-    void (*destroy) (void *);
+    void* (*init)  (void *);
+    void (*destroy)(void *);
 
-    void (*lookup)  (fuse_req_t req, fuse_ino_t parent, const char *name);
-    void (*forget)  (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
-    void (*getattr) (fuse_req_t req, fuse_ino_t ino);
-    void (*setattr) (fuse_req_t req, fuse_ino_t ino, struct stat *attr,
+    void (*lookup) (fuse_req_t req, fuse_ino_t parent, const char *name);
+    void (*forget) (fuse_req_t req, fuse_ino_t ino, unsigned long nlookup);
+    void (*getattr)(fuse_req_t req, fuse_ino_t ino);
+    void (*setattr)(fuse_req_t req, fuse_ino_t ino, struct stat *attr,
                      int to_set);
     void (*readlink)(fuse_req_t req, fuse_ino_t ino);
-    void (*mknod)   (fuse_req_t req, fuse_ino_t parent, const char *name,
-                     mode_t mode, dev_t rdev);
-    void (*mkdir)   (fuse_req_t req, fuse_ino_t parent, const char *name,
-                     mode_t mode);
-    void (*unlink)  (fuse_req_t req, fuse_ino_t parent, const char *name);
-    void (*rmdir)   (fuse_req_t req, fuse_ino_t parent, const char *name);
-    void (*symlink) (fuse_req_t req, const char *link, fuse_ino_t parent,
-                     const char *name);
-    void (*rename)  (fuse_req_t req, fuse_ino_t parent, const char *name,
-                     fuse_ino_t newparent, const char *newname);
-    void (*link)    (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
-                     const char *newname);
-    void (*open)    (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
-    void (*read)    (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+    void (*mknod)  (fuse_req_t req, fuse_ino_t parent, const char *name,
+                    mode_t mode, dev_t rdev);
+    void (*mkdir)  (fuse_req_t req, fuse_ino_t parent, const char *name,
+                    mode_t mode);
+    void (*unlink) (fuse_req_t req, fuse_ino_t parent, const char *name);
+    void (*rmdir)  (fuse_req_t req, fuse_ino_t parent, const char *name);
+    void (*symlink)(fuse_req_t req, const char *link, fuse_ino_t parent,
+                    const char *name);
+    void (*rename) (fuse_req_t req, fuse_ino_t parent, const char *name,
+                    fuse_ino_t newparent, const char *newname);
+    void (*link)   (fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
+                    const char *newname);
+    void (*open)   (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
+    void (*read)   (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+                    struct fuse_file_info *fi);
+    void (*write)  (fuse_req_t req, fuse_ino_t ino, const char *buf,
+                    size_t size, off_t off, struct fuse_file_info *fi);
+    void (*flush)  (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
+    void (*release)(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
+    void (*fsync)  (fuse_req_t req, fuse_ino_t ino, int datasync,
+                    struct fuse_file_info *fi);
+    void (*opendir)(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
+    void (*readdir)(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
+                    struct fuse_file_info *fi);
+    void (*releasedir)(fuse_req_t req, fuse_ino_t ino,
+                       struct fuse_file_info *fi);
+    void (*fsyncdir)(fuse_req_t req, fuse_ino_t ino, int datasync,
                      struct fuse_file_info *fi);
-    void (*write)   (fuse_req_t req, fuse_ino_t ino, const char *buf,
-                     size_t size, off_t off, struct fuse_file_info *fi);
-    void (*flush)   (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
-    void (*release) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
-    void (*fsync)   (fuse_req_t req, fuse_ino_t ino, int datasync,
-                     struct fuse_file_info *fi);
-    void (*opendir) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi);
-    void (*readdir)  (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
-                      struct fuse_file_info *fi);
-    void (*releasedir) (fuse_req_t req, fuse_ino_t ino,
-                        struct fuse_file_info *fi);
-    void (*fsyncdir) (fuse_req_t req, fuse_ino_t ino, int datasync,
-                      struct fuse_file_info *fi);
-    void (*statfs)  (fuse_req_t req);
+    void (*statfs) (fuse_req_t req);
     void (*setxattr)(fuse_req_t req, fuse_ino_t ino, const char *name,
                      const char *value, size_t size, int flags);
     void (*getxattr)(fuse_req_t req, fuse_ino_t ino, const char *name,
                      size_t size);
     void (*listxattr)(fuse_req_t req, fuse_ino_t ino, size_t size);
     void (*removexattr)(fuse_req_t req, fuse_ino_t ino, const char *name);
+    void (*getlk)  (fuse_req_t req, fuse_ino_t ino, 
+                    const struct fuse_lock_param *lk);
+    void (*setlk)  (fuse_req_t req, fuse_ino_t ino, int sleep,
+                    const struct fuse_lock_param *lk);
 };
 
 /* ------------------------------------------ */
@@ -141,6 +153,9 @@ int fuse_reply_statfs(fuse_req_t req, const struct statfs *statfs);
 /* getxattr, listxattr */
 int fuse_reply_xattr(fuse_req_t req, size_t count);
 
+/* getlk */
+int fuse_reply_getlk(fuse_req_t req, const struct fuse_lock_param *lk);
+
 /* ------------------------------------------ */
 
 /* return the size of a directory entry */