tools/virtiofsd/fuse_i.h

   1 /*
   2  * FUSE: Filesystem in Userspace
   3  * Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
   4  *
   5  * This program can be distributed under the terms of the GNU LGPLv2.
   6  * See the file COPYING.LIB
   7  */
   8
   9 #ifndef FUSE_I_H
  10 #define FUSE_I_H
  11
  12 #define FUSE_USE_VERSION 31
  13 #include "fuse_lowlevel.h"
  14
  15 struct fv_VuDev;
  16 struct fv_QueueInfo;
  17
  18 struct fuse_security_context {
  19         const char *name;
  20         uint32_t ctxlen;
  21         const void *ctx;
  22 };
  23
  24 struct fuse_req {
  25     struct fuse_session *se;
  26     uint64_t unique;
  27     int ctr;
  28     pthread_mutex_t lock;
  29     struct fuse_ctx ctx;
  30     struct fuse_chan *ch;
  31     int interrupted;
  32     unsigned int ioctl_64bit:1;
  33     union {
  34         struct {
  35             uint64_t unique;
  36         } i;
  37         struct {
  38             fuse_interrupt_func_t func;
  39             void *data;
  40         } ni;
  41     } u;
  42     struct fuse_req *next;
  43     struct fuse_req *prev;
  44     struct fuse_security_context secctx;
  45 };
  46
  47 struct fuse_notify_req {
  48     uint64_t unique;
  49     void (*reply)(struct fuse_notify_req *, fuse_req_t, fuse_ino_t,
  50                   const void *, const struct fuse_buf *);
  51     struct fuse_notify_req *next;
  52     struct fuse_notify_req *prev;
  53 };
  54
  55 struct fuse_session {
  56     char *mountpoint;
  57     volatile int exited;
  58     int fd;
  59     int debug;
  60     int deny_others;
  61     struct fuse_lowlevel_ops op;
  62     int got_init;
  63     struct cuse_data *cuse_data;
  64     void *userdata;
  65     uid_t owner;
  66     struct fuse_conn_info conn;
  67     struct fuse_req list;
  68     struct fuse_req interrupts;
  69     pthread_mutex_t lock;
  70     pthread_rwlock_t init_rwlock;
  71     int got_destroy;
  72     int broken_splice_nonblock;
  73     uint64_t notify_ctr;
  74     struct fuse_notify_req notify_list;
  75     size_t bufsize;
  76     int error;
  77     char *vu_socket_path;
  78     char *vu_socket_group;
  79     int   vu_listen_fd;
  80     int   vu_socketfd;
  81     struct fv_VuDev *virtio_dev;
  82     int thread_pool_size;
  83 };
  84
  85 struct fuse_chan {
  86     pthread_mutex_t lock;
  87     int ctr;
  88     int fd;
  89     struct fv_QueueInfo *qi;
  90 };
  91
  92 int fuse_send_reply_iov_nofree(fuse_req_t req, int error, struct iovec *iov,
  93                                int count);
  94 void fuse_free_req(fuse_req_t req);
  95
  96 void fuse_session_process_buf_int(struct fuse_session *se,
  97                                   struct fuse_bufvec *bufv,
  98                                   struct fuse_chan *ch);
  99
 100
 101 #define FUSE_MAX_MAX_PAGES 256
 102 #define FUSE_DEFAULT_MAX_PAGES_PER_REQ 32
 103
 104 /* room needed in buffer to accommodate header */
 105 #define FUSE_BUFFER_HEADER_SIZE 0x1000
 106
 107 #endif