lib/fuse_session.c

   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 #include "config.h"
  10 #include "fuse_i.h"
  11 #include "fuse_misc.h"
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <assert.h>
  17 #include <errno.h>
  18
  19
  20 struct fuse_session *fuse_session_new(void)
  21 {
  22         struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se));
  23         if (se == NULL) {
  24                 fprintf(stderr, "fuse: failed to allocate session\n");
  25                 return NULL;
  26         }
  27         memset(se, 0, sizeof(*se));
  28
  29         return se;
  30 }
  31
  32 void fuse_session_add_chan(struct fuse_session *se, struct fuse_chan *ch)
  33 {
  34         assert(se->ch == NULL);
  35         assert(ch->se == NULL);
  36         se->ch = ch;
  37         ch->se = se;
  38 }
  39
  40 void fuse_session_remove_chan(struct fuse_chan *ch)
  41 {
  42         struct fuse_session *se = ch->se;
  43         if (se) {
  44                 assert(se->ch == ch);
  45                 se->ch = NULL;
  46                 ch->se = NULL;
  47         }
  48 }
  49
  50 struct fuse_chan *fuse_session_chan(struct fuse_session *se)
  51 {
  52         return se->ch;
  53 }
  54
  55 int fuse_chan_clearfd(struct fuse_chan *ch)
  56 {
  57         int fd = ch->fd;
  58         ch->fd = -1;
  59         return fd;
  60 }
  61
  62 void fuse_session_exit(struct fuse_session *se)
  63 {
  64         se->exited = 1;
  65 }
  66
  67 void fuse_session_reset(struct fuse_session *se)
  68 {
  69         se->exited = 0;
  70 }
  71
  72 int fuse_session_exited(struct fuse_session *se)
  73 {
  74         return se->exited;
  75 }
  76
  77 struct fuse_chan *fuse_chan_new(int fd)
  78 {
  79         struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch));
  80         if (ch == NULL) {
  81                 fprintf(stderr, "fuse: failed to allocate channel\n");
  82                 return NULL;
  83         }
  84
  85         memset(ch, 0, sizeof(*ch));
  86         ch->fd = fd;
  87
  88         return ch;
  89 }
  90
  91 int fuse_chan_fd(struct fuse_chan *ch)
  92 {
  93         return ch->fd;
  94 }
  95
  96 struct fuse_session *fuse_chan_session(struct fuse_chan *ch)
  97 {
  98         return ch->se;
  99 }
 100
 101 void fuse_chan_destroy(struct fuse_chan *ch)
 102 {
 103         fuse_session_remove_chan(ch);
 104         fuse_chan_close(ch);
 105         free(ch);
 106 }