Migrate chansrv to FUSE3 interface
(cherry picked from commit edd4276633)
This commit is contained in:
matt335672
parent
ec08382193
commit
6f68496baf
@ -325,15 +325,14 @@ extern struct config_chansrv *g_cfg; /* in chansrv.c */
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static struct list *g_req_list = 0;
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static struct xfs_fs *g_xfs; /* an inst of xrdp file system */
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static ino_t g_clipboard_inum; /* inode of clipboard dir */
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static char *g_mount_point = 0; /* our FUSE mount point */
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static struct fuse_lowlevel_ops g_xfuse_ops; /* setup FUSE callbacks */
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static int g_xfuse_inited = 0; /* true when FUSE is inited */
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static struct fuse_chan *g_ch = 0;
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static struct fuse_session *g_se = 0;
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static char *g_buffer = 0;
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static int g_fd = 0;
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static tintptr g_bufsize = 0;
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// For the below, see the source for the fuse_session_loop() function
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static struct fuse_buf g_buffer =
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{
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.mem = NULL
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};
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/* forward declarations for internal access */
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static int xfuse_init_xrdp_fs(void);
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@ -362,7 +361,8 @@ static void xfuse_cb_unlink(fuse_req_t req, fuse_ino_t parent,
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static void xfuse_cb_rename(fuse_req_t req,
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fuse_ino_t old_parent, const char *old_name,
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fuse_ino_t new_parent, const char *new_name);
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fuse_ino_t new_parent, const char *new_name,
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unsigned int flags);
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/* Whether to create a dir of file depends on whether S_IFDIR is set in the
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mode field */
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@ -496,9 +496,9 @@ xfuse_init(void)
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return 1;
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}
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if (g_ch != 0)
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if (g_se != 0)
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{
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LOG_DEVEL(LOG_LEVEL_ERROR, "g_ch is not zero");
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LOG_DEVEL(LOG_LEVEL_ERROR, "g_se is not zero");
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return -1;
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}
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@ -604,15 +604,18 @@ xfuse_init(void)
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g_xfuse_ops.releasedir = xfuse_cb_releasedir;
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fuse_opt_add_arg(&args, "xrdp-chansrv");
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fuse_opt_add_arg(&args, g_fuse_root_path);
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fuse_opt_add_arg(&args, "-o");
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fuse_opt_add_arg(&args, "fsname=xrdp-chansrv");
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//fuse_opt_add_arg(&args, "-s"); /* single threaded mode */
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//fuse_opt_add_arg(&args, "-d"); /* debug mode */
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if (xfuse_init_lib(&args))
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{
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fuse_opt_free_args(&args);
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xfuse_deinit();
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return -1;
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}
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fuse_opt_free_args(&args);
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g_xfuse_inited = 1;
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return 0;
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@ -627,30 +630,18 @@ xfuse_init(void)
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int
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xfuse_deinit(void)
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{
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if (g_ch != 0)
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{
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fuse_session_remove_chan(g_ch);
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fuse_unmount(g_mount_point, g_ch);
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g_ch = 0;
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}
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if (g_se != 0)
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if (g_se != NULL)
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{
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fuse_session_unmount(g_se);
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fuse_session_destroy(g_se);
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g_se = 0;
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g_se = NULL;
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}
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if (g_buffer != 0)
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{
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g_free(g_buffer);
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g_buffer = 0;
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}
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free(g_buffer.mem);
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g_buffer.mem = NULL;
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if (g_req_list != 0)
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{
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list_delete(g_req_list);
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g_req_list = 0;
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}
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list_delete(g_req_list);
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g_req_list = 0;
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xfuse_deinit_xrdp_fs();
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@ -665,35 +656,28 @@ xfuse_deinit(void)
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*****************************************************************************/
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int xfuse_check_wait_objs(void)
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{
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struct fuse_chan *tmpch;
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int rval;
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if (g_ch == 0)
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if (g_se != NULL)
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{
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return 0;
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}
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if (g_sck_can_recv(g_fd, 0))
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{
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tmpch = g_ch;
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rval = fuse_chan_recv(&tmpch, g_buffer, g_bufsize);
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if (rval == -EINTR)
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if (g_sck_can_recv(fuse_session_fd(g_se), 0))
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{
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return -1;
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}
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int rval = fuse_session_receive_buf(g_se, &g_buffer);
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if (rval == -EINTR)
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{
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return -1;
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}
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if (rval == -ENODEV)
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{
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return -1;
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}
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if (rval == -ENODEV)
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{
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return -1;
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}
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if (rval <= 0)
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{
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return -1;
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}
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if (rval <= 0)
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{
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return -1;
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}
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fuse_session_process(g_se, g_buffer, rval, tmpch);
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fuse_session_process_buf(g_se, &g_buffer);
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}
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}
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return 0;
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@ -707,18 +691,12 @@ int xfuse_check_wait_objs(void)
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int xfuse_get_wait_objs(tbus *objs, int *count, int *timeout)
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{
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int lcount;
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if (g_ch == 0)
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if (g_se != NULL)
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{
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return 0;
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objs[*count] = fuse_session_fd(g_se);
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++(*count);
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}
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lcount = *count;
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objs[lcount] = g_fd;
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lcount++;
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*count = lcount;
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return 0;
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}
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@ -894,6 +872,48 @@ int xfuse_file_contents_size(int stream_id, int file_size)
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** **
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*****************************************************************************/
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/*****************************************************************************/
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/**
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* FUSE logging function
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*
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* Used to get errors from FUSE for the log file
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* @param fuse_log_level Logging level understood by FUSE
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* @param fmt Logging format string
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* @param ap Arguments for above
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*/
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static void
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xfuse_log_func(enum fuse_log_level fuse_log_level, const char *fmt, va_list ap)
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{
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char msg[512];
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enum logLevels level;
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switch (fuse_log_level)
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{
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case FUSE_LOG_ERR:
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level = LOG_LEVEL_ERROR;
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break;
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case FUSE_LOG_WARNING:
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level = LOG_LEVEL_WARNING;
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break;
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case FUSE_LOG_NOTICE:
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case FUSE_LOG_INFO:
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level = LOG_LEVEL_INFO;
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break;
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case FUSE_LOG_DEBUG:
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level = LOG_LEVEL_DEBUG;
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break;
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default:
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level = LOG_LEVEL_ALWAYS;
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break;
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}
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vsnprintf(msg, sizeof(msg), fmt, ap);
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LOG(level, "%s", msg);
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}
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/**
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* Initialize FUSE library
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*
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@ -902,43 +922,30 @@ int xfuse_file_contents_size(int stream_id, int file_size)
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static int xfuse_init_lib(struct fuse_args *args)
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{
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if (fuse_parse_cmdline(args, &g_mount_point, 0, 0) < 0)
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{
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LOG(LOG_LEVEL_ERROR, "fuse_parse_cmdline() failed");
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fuse_opt_free_args(args);
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return -1;
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}
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int rv = -1;
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fuse_set_log_func(xfuse_log_func);
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if ((g_ch = fuse_mount(g_mount_point, args)) == 0)
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g_se = fuse_session_new(args, &g_xfuse_ops, sizeof(g_xfuse_ops), 0);
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if (g_se == NULL)
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{
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LOG(LOG_LEVEL_ERROR, "fuse_session_new() failed");
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}
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else if (fuse_session_mount(g_se, g_fuse_root_path) != 0)
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{
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LOG(LOG_LEVEL_ERROR, "FUSE mount on %s failed."
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" If %s is already mounted, you must first unmount it",
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g_mount_point, g_mount_point);
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fuse_opt_free_args(args);
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return -1;
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g_fuse_root_path, g_fuse_root_path);
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fuse_session_destroy(g_se);
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g_se = NULL;
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}
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g_se = fuse_lowlevel_new(args, &g_xfuse_ops, sizeof(g_xfuse_ops), 0);
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if (g_se == 0)
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else
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{
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LOG(LOG_LEVEL_ERROR, "fuse_lowlevel_new() failed");
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fuse_unmount(g_mount_point, g_ch);
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g_ch = 0;
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fuse_opt_free_args(args);
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return -1;
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g_req_list = list_create();
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g_req_list->auto_free = 1;
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rv = 0;
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}
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fuse_opt_free_args(args);
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fuse_session_add_chan(g_se, g_ch);
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g_bufsize = fuse_chan_bufsize(g_ch);
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g_buffer = g_new0(char, g_bufsize);
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g_fd = fuse_chan_fd(g_ch);
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g_req_list = list_create();
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g_req_list->auto_free = 1;
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return 0;
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return rv;
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}
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/**
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@ -1934,7 +1941,8 @@ static void xfuse_cb_unlink(fuse_req_t req, fuse_ino_t parent,
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static void xfuse_cb_rename(fuse_req_t req,
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fuse_ino_t old_parent, const char *old_name,
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fuse_ino_t new_parent, const char *new_name)
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fuse_ino_t new_parent, const char *new_name,
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unsigned int flags)
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{
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XFS_INODE *old_xinode;
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XFS_INODE *new_parent_xinode;
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@ -1942,8 +1950,13 @@ static void xfuse_cb_rename(fuse_req_t req,
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LOG_DEVEL(LOG_LEVEL_DEBUG, "entered: old_parent=%ld old_name=%s new_parent=%ld new_name=%s",
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old_parent, old_name, new_parent, new_name);
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if (strlen(old_name) > XFS_MAXFILENAMELEN ||
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strlen(new_name) > XFS_MAXFILENAMELEN)
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// renameat2() flags (in stdio.h) are not supported
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if (flags != 0)
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{
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fuse_reply_err(req, EINVAL);
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}
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else if (strlen(old_name) > XFS_MAXFILENAMELEN ||
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strlen(new_name) > XFS_MAXFILENAMELEN)
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{
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fuse_reply_err(req, ENAMETOOLONG);
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}
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