libfuse cleanup: remove single threaded

libfuse/Makefile

@@ -34,7 +34,6 @@ SRC   = \
 	lib/fuse_dirents.c \
 	lib/fuse.c \
 	lib/fuse_kern_chan.c \
-	lib/fuse_loop.c \
 	lib/fuse_loop_mt.c \
 	lib/fuse_lowlevel.c \
 	lib/fuse_mt.c \

libfuse/include/fuse.h

@@ -664,17 +664,6 @@ extern "C" {
    */
   void fuse_destroy(struct fuse *f);
 
-  /**
-   * FUSE event loop.
-   *
-   * Requests from the kernel are processed, and the appropriate
-   * operations are called.
-   *
-   * @param f the FUSE handle
-   * @return 0 if no error occurred, -1 otherwise
-   */
-  int fuse_loop(struct fuse *f);
-
   /**
    * Exit from event loop
    *
@@ -903,7 +892,7 @@ extern "C" {
   /** This is the part of fuse_main() before the event loop */
   struct fuse *fuse_setup(int argc, char *argv[],
                           const struct fuse_operations *op, size_t op_size,
-                          char **mountpoint, int *multithreaded,
+                          char **mountpoint,
                           void *user_data);
 
   /** This is the part of fuse_main() after the event loop */

libfuse/include/fuse_common.h

@@ -235,7 +235,6 @@ extern "C" {
    *
    *   '-f'	     foreground
    *   '-d' '-odebug'  foreground, but keep the debug option
-   *   '-s'	     single threaded
    *   '-h' '--help'   help
    *   '-ho'	     help without header
    *   '-ofsname=..'   file system name, if not present, then set to the program
@@ -245,12 +244,12 @@ extern "C" {
    *
    * @param args argument vector
    * @param mountpoint the returned mountpoint, should be freed after use
-   * @param multithreaded set to 1 unless the '-s' option is present
    * @param foreground set to 1 if one of the relevant options is present
    * @return 0 on success, -1 on failure
    */
-  int fuse_parse_cmdline(struct fuse_args *args, char **mountpoint,
-                         int *multithreaded, int *foreground);
+  int fuse_parse_cmdline(struct fuse_args  *args,
+                         char             **mountpoint,
+                         int               *foreground);
 
   /**
    * Go into the background

libfuse/include/fuse_lowlevel.h

@@ -1698,14 +1698,6 @@ extern "C" {
    */
   void *fuse_session_data(struct fuse_session *se);
 
-  /**
-   * Enter a single threaded event loop
-   *
-   * @param se the session
-   * @return 0 on success, -1 on error
-   */
-  int fuse_session_loop(struct fuse_session *se);
-
   /**
    * Enter a multi-threaded event loop
    *

libfuse/lib/fuse.c

@@ -4177,79 +4177,6 @@ struct fuse_cmd *fuse_read_cmd(struct fuse *f)
   return cmd;
 }
 
-static int fuse_session_loop_remember(struct fuse *f)
-{
-  struct fuse_session *se = f->se;
-  int res = 0;
-  struct timespec now;
-  time_t next_clean;
-  struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
-  size_t bufsize = fuse_chan_bufsize(ch);
-  char *buf = (char *) malloc(bufsize);
-  struct pollfd fds = {
-    .fd = fuse_chan_fd(ch),
-    .events = POLLIN
-  };
-
-  if (!buf) {
-    fprintf(stderr, "fuse: failed to allocate read buffer\n");
-    return -1;
-  }
-
-  curr_time(&now);
-  next_clean = now.tv_sec;
-  while (!fuse_session_exited(se)) {
-    struct fuse_chan *tmpch = ch;
-    struct fuse_buf fbuf = {
-      .mem = buf,
-      .size = bufsize,
-    };
-    unsigned timeout;
-
-    curr_time(&now);
-    if (now.tv_sec < next_clean)
-      timeout = next_clean - now.tv_sec;
-    else
-      timeout = 0;
-
-    res = poll(&fds, 1, timeout * 1000);
-    if (res == -1) {
-      if (errno == -EINTR)
-        continue;
-      else
-        break;
-    } else if (res > 0) {
-      res = fuse_session_receive_buf(se, &fbuf, &tmpch);
-
-      if (res == -EINTR)
-        continue;
-      if (res <= 0)
-        break;
-
-      fuse_session_process_buf(se, &fbuf, tmpch);
-    } else {
-      timeout = fuse_clean_cache(f);
-      curr_time(&now);
-      next_clean = now.tv_sec + timeout;
-    }
-  }
-
-  free(buf);
-  fuse_session_reset(se);
-  return res < 0 ? -1 : 0;
-}
-
-int fuse_loop(struct fuse *f)
-{
-  if (!f)
-    return -1;
-
-  if (lru_enabled(f))
-    return fuse_session_loop_remember(f);
-
-  return fuse_session_loop(f->se);
-}
-
 int fuse_invalidate(struct fuse *f, const char *path)
 {
   (void) f;

libfuse/lib/fuse_i.h

@@ -120,7 +120,6 @@ struct fuse *fuse_setup_common(int argc, char *argv[],
 			       const struct fuse_operations *op,
 			       size_t op_size,
 			       char **mountpoint,
-			       int *multithreaded,
 			       int *fd,
 			       void *user_data);
 

libfuse/lib/fuse_loop.c

@@ -1,46 +0,0 @@
-/*
-  FUSE: Filesystem in Userspace
-  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB
-*/
-
-#include "fuse_lowlevel.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-
-int fuse_session_loop(struct fuse_session *se)
-{
-  int res = 0;
-  struct fuse_chan *ch = fuse_session_next_chan(se, NULL);
-  size_t bufsize = fuse_chan_bufsize(ch);
-  char *buf = (char*)calloc(bufsize,1);
-  if (!buf) {
-    fprintf(stderr, "fuse: failed to allocate read buffer\n");
-    return -1;
-  }
-
-  while (!fuse_session_exited(se)) {
-    struct fuse_chan *tmpch = ch;
-    struct fuse_buf fbuf = {
-      .mem = buf,
-      .size = bufsize,
-    };
-
-    res = fuse_session_receive_buf(se, &fbuf, &tmpch);
-
-    if (res == -EINTR)
-      continue;
-    if (res <= 0)
-      break;
-
-    fuse_session_process_buf(se, &fbuf, tmpch);
-  }
-
-  free(buf);
-  fuse_session_reset(se);
-  return res < 0 ? -1 : 0;
-}

libfuse/lib/fuse_mt.c

@@ -121,5 +121,3 @@ int fuse_loop_mt(struct fuse *f)
   fuse_stop_cleanup_thread(f);
   return res;
 }
-
-FUSE_SYMVER(".symver fuse_loop_mt_proc,__fuse_loop_mt@");

libfuse/lib/helper.c

@@ -29,7 +29,6 @@ enum  {
 
 struct helper_opts
 {
-  int singlethread;
   int foreground;
   int nodefault_subtype;
   char *mountpoint;
@@ -44,7 +43,6 @@ struct fuse_opt fuse_helper_opts[] =
     FUSE_HELPER_OPT("-d",	foreground),
     FUSE_HELPER_OPT("debug",	foreground),
     FUSE_HELPER_OPT("-f",	foreground),
-    FUSE_HELPER_OPT("-s",		singlethread),
     FUSE_HELPER_OPT("fsname=",	nodefault_subtype),
     FUSE_HELPER_OPT("subtype=",	nodefault_subtype),
     FUSE_OPT_KEY("-h",		KEY_HELP),
@@ -77,7 +75,6 @@ static void helper_help(void)
           "FUSE options:\n"
           "    -d   -o debug          enable debug output (implies -f)\n"
           "    -f                     foreground operation\n"
-          "    -s                     disable multi-threaded operation\n"
           "\n"
           );
 }
@@ -149,7 +146,6 @@ static int add_default_subtype(const char *progname, struct fuse_args *args)
 int
 fuse_parse_cmdline(struct fuse_args  *args_,
                    char             **mountpoint_,
-                   int               *multithreaded_,
                    int               *foreground_)
 {
   int res;
@@ -176,8 +172,6 @@ fuse_parse_cmdline(struct fuse_args  *args_,
   else
     free(hopts.mountpoint);
 
-  if(multithreaded_)
-    *multithreaded_ = !hopts.singlethread;
   if(foreground_)
     *foreground_ = hopts.foreground;
 
@@ -296,7 +290,6 @@ struct fuse *fuse_setup_common(int argc, char *argv[],
 			       const struct fuse_operations *op,
 			       size_t op_size,
 			       char **mountpoint,
-			       int *multithreaded,
 			       int *fd,
 			       void *user_data)
 {
@@ -306,7 +299,7 @@ struct fuse *fuse_setup_common(int argc, char *argv[],
   int foreground;
   int res;
 
-  res = fuse_parse_cmdline(&args, mountpoint, multithreaded, &foreground);
+  res = fuse_parse_cmdline(&args, mountpoint, &foreground);
   if (res == -1)
     return NULL;
 
@@ -345,10 +338,10 @@ struct fuse *fuse_setup_common(int argc, char *argv[],
 
 struct fuse *fuse_setup(int argc, char *argv[],
 			const struct fuse_operations *op, size_t op_size,
-			char **mountpoint, int *multithreaded, void *user_data)
+			char **mountpoint, void *user_data)
 {
   return fuse_setup_common(argc, argv, op, op_size, mountpoint,
-                           multithreaded, NULL, user_data);
+                           NULL, user_data);
 }
 
 static void fuse_teardown_common(struct fuse *fuse, char *mountpoint)
@@ -372,18 +365,15 @@ static int fuse_main_common(int argc, char *argv[],
 {
   struct fuse *fuse;
   char *mountpoint;
-  int multithreaded;
   int res;
 
-  fuse = fuse_setup_common(argc, argv, op, op_size, &mountpoint,
-                           &multithreaded, NULL, user_data);
+  fuse = fuse_setup_common(argc, argv, op, op_size,
+                           &mountpoint,
+                           NULL, user_data);
   if (fuse == NULL)
     return 1;
 
-  if (multithreaded)
   res = fuse_loop_mt(fuse);
-  else
-    res = fuse_loop(fuse);
 
   fuse_teardown_common(fuse, mountpoint);
   if (res == -1)