Add callbacks for newer functions

* setupmapping
* removemapping
* syncfs
* tmpfile

libfuse/include/fuse.h

@@ -539,6 +539,16 @@ struct fuse_operations
                              off_t                   offset_out,
                              size_t                  size,
                              int                     flags);
+
+  ssize_t (*setupmapping)(uint64_t *fh_,
+                          uint64_t  foffset_,
+                          uint64_t  len_,
+                          uint64_t  flags_,
+                          uint64_t  moffset_);
+
+  int (*removemapping)();
+  int (*syncfs)();
+  int (*tmpfile)(const char *, mode_t, fuse_file_info_t *);
 };
 
 /** Extra context that may be needed by some filesystems

libfuse/include/fuse_lowlevel.h

@@ -1007,6 +1007,15 @@ struct fuse_lowlevel_ops
    */
   void (*copy_file_range)(fuse_req_t                   req,
                           const struct fuse_in_header *hdr);
+
+  void (*setupmapping)(fuse_req_t                   req,
+                       const struct fuse_in_header *hdr);
+  void (*removemapping)(fuse_req_t                   req,
+                        const struct fuse_in_header *hdr);
+  void (*syncfs)(fuse_req_t                   req,
+                 const struct fuse_in_header *hdr);
+  void (*tmpfile)(fuse_req_t                   req,
+                  const struct fuse_in_header *hdr);
 };
 
 /**

libfuse/lib/fuse.c

@@ -753,6 +753,7 @@ find_node(struct fuse *f,
       if(f->conf.remember)
         inc_nlookup(node);
 
+      printf("hash_name = %s\n",name);
       if(hash_name(f,node,parent,name) == -1)
         {
           free_node(f,node);
@@ -2877,6 +2878,101 @@ fuse_lib_copy_file_range(fuse_req_t                   req_,
     fuse_reply_err(req_,rv);
 }
 
+static
+void
+fuse_lib_setupmapping(fuse_req_t                   req_,
+                      const struct fuse_in_header *hdr_)
+{
+  fuse_reply_err(req_,ENOSYS);
+}
+
+static
+void
+fuse_lib_removemapping(fuse_req_t                   req_,
+                       const struct fuse_in_header *hdr_)
+{
+  fuse_reply_err(req_,ENOSYS);
+}
+
+static
+void
+fuse_lib_syncfs(fuse_req_t                   req_,
+                const struct fuse_in_header *hdr_)
+{
+  fuse_reply_err(req_,ENOSYS);
+}
+
+// TODO: This is just a copy of fuse_lib_create. Needs to be rewritten
+// so a nameless node can be setup.
+// name is always '/'
+// nodeid is the base directory
+static
+void
+fuse_lib_tmpfile(fuse_req_t                   req_,
+                 const struct fuse_in_header *hdr_)
+{
+  int err;
+  char *path;
+  struct fuse *f;
+  const char *name;
+  fuse_file_info_t ffi = {0};
+  struct fuse_entry_param e;
+  struct fuse_create_in *arg;
+
+  arg  = fuse_hdr_arg(hdr_);
+  name = PARAM(arg);
+
+  ffi.flags = arg->flags;
+
+  if(req_->f->conn.proto_minor >= 12)
+    req_->ctx.umask = arg->umask;
+  else
+    name = (char*)arg + sizeof(struct fuse_open_in);
+
+  f = req_fuse_prepare(req_);
+
+  err = get_path_name(f,hdr_->nodeid,name,&path);
+  if(!err)
+    {
+      err = f->fs->op.tmpfile(path,arg->mode,&ffi);
+      if(!err)
+        {
+          err = lookup_path(f,hdr_->nodeid,name,path,&e,&ffi);
+          if(err)
+            {
+              f->fs->op.release(&ffi);
+            }
+          else if(!S_ISREG(e.attr.st_mode))
+            {
+              err = -EIO;
+              f->fs->op.release(&ffi);
+              forget_node(f,e.ino,1);
+            }
+        }
+    }
+
+  if(!err)
+    {
+      pthread_mutex_lock(&f->lock);
+      get_node(f,e.ino)->open_count++;
+      pthread_mutex_unlock(&f->lock);
+
+      if(fuse_reply_create(req_,&e,&ffi) == -ENOENT)
+        {
+          /* The open syscall was interrupted,so it
+             must be cancelled */
+          fuse_do_release(f,e.ino,&ffi);
+          forget_node(f,e.ino,1);
+        }
+    }
+  else
+    {
+      fuse_reply_err(req_,err);
+    }
+
+  free_path(f,hdr_->nodeid,path);
+}
+
 static
 lock_t*
 locks_conflict(node_t       *node,
@@ -3531,15 +3627,19 @@ static struct fuse_lowlevel_ops fuse_path_ops =
    .readlink        = fuse_lib_readlink,
    .release         = fuse_lib_release,
    .releasedir      = fuse_lib_releasedir,
+   .removemapping   = fuse_lib_removemapping,
    .removexattr     = fuse_lib_removexattr,
    .rename          = fuse_lib_rename,
    .retrieve_reply  = NULL,
    .rmdir           = fuse_lib_rmdir,
    .setattr         = fuse_lib_setattr,
    .setlk           = fuse_lib_setlk,
+   .setupmapping    = fuse_lib_setupmapping,
    .setxattr        = fuse_lib_setxattr,
    .statfs          = fuse_lib_statfs,
    .symlink         = fuse_lib_symlink,
+   .syncfs          = fuse_lib_syncfs,
+   .tmpfile         = fuse_lib_tmpfile,
    .unlink          = fuse_lib_unlink,
    .write           = fuse_lib_write,
   };

libfuse/lib/fuse_lowlevel.c

@@ -1330,6 +1330,42 @@ do_copy_file_range(fuse_req_t             req_,
   req_->f->op.copy_file_range(req_,hdr_);
 }
 
+static
+void
+do_setupmapping(fuse_req_t                req_,
+                   struct fuse_in_header *hdr_)
+{
+  printf("setupmapping\n");
+  req_->f->op.setupmapping(req_,hdr_);
+}
+
+static
+void
+do_removemapping(fuse_req_t             req_,
+                 struct fuse_in_header *hdr_)
+{
+  printf("removemapping\n");
+  req_->f->op.removemapping(req_,hdr_);
+}
+
+static
+void
+do_syncfs(fuse_req_t             req_,
+          struct fuse_in_header *hdr_)
+{
+  printf("syncfs\n");
+  req_->f->op.syncfs(req_,hdr_);
+}
+
+static
+void
+do_tmpfile(fuse_req_t             req_,
+           struct fuse_in_header *hdr_)
+{
+  printf("tmpfile\n");
+  req_->f->op.tmpfile(req_,hdr_);
+}
+
 static
 int
 send_notify_iov(struct fuse_ll   *f,
@@ -1643,6 +1679,10 @@ static struct {
     [FUSE_NOTIFY_REPLY]    = { do_notify_reply,    "NOTIFY_REPLY"    },
     [FUSE_BATCH_FORGET]    = { do_batch_forget,    "BATCH_FORGET"    },
     [FUSE_COPY_FILE_RANGE] = { do_copy_file_range, "COPY_FILE_RANGE" },
+    [FUSE_SETUPMAPPING]    = { do_setupmapping,    "SETUPMAPPING"    },
+    [FUSE_REMOVEMAPPING]   = { do_removemapping,   "REMOVEMAPPING"   },
+    [FUSE_SYNCFS]          = { do_syncfs,          "SYNCFS"          },
+    [FUSE_TMPFILE]         = { do_tmpfile,         "TMPFILE"         }
   };
 
 #define FUSE_MAXOP (sizeof(fuse_ll_ops) / sizeof(fuse_ll_ops[0]))
@@ -1815,6 +1855,8 @@ fuse_ll_buf_process_read(struct fuse_session *se_,
 
   in = (struct fuse_in_header*)msgbuf_->mem;
 
+  //  printf("%d\n",in->opcode);
+
   req = fuse_ll_alloc_req(se_->f);
   if(req == NULL)
     return fuse_send_enomem(se_->f,se_->ch,in->unique);

src/fuse_removemapping.cpp

@@ -0,0 +1,28 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "fuse_removemapping.hpp"
+
+#include <errno.h>
+
+
+int
+FUSE::removemapping()
+{
+  return -ENOSYS;
+}

src/fuse_removemapping.hpp

@@ -0,0 +1,27 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#pragma once
+
+#include "fuse.h"
+
+
+namespace FUSE
+{
+  int removemapping();
+}

src/fuse_setupmapping.cpp

@@ -0,0 +1,35 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "fuse_setupmapping.hpp"
+
+#include <sys/types.h>
+#include <errno.h>
+
+#include <cstdint>
+
+
+ssize_t
+FUSE::setupmapping(uint64_t *fh_,
+                   uint64_t  foffset_,
+                   uint64_t  len_,
+                   uint64_t  flags_,
+                   uint64_t  moffset_)
+{
+  return -ENOSYS;
+}

src/fuse_setupmapping.hpp

@@ -0,0 +1,31 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#pragma once
+
+#include "fuse.h"
+
+
+namespace FUSE
+{
+  ssize_t setupmapping(uint64_t *fh_,
+                       uint64_t  foffset_,
+                       uint64_t  len_,
+                       uint64_t  flags_,
+                       uint64_t  moffset_);
+}

src/fuse_syncfs.cpp

@@ -0,0 +1,28 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "fuse_syncfs.hpp"
+
+#include <errno.h>
+
+
+int
+FUSE::syncfs()
+{
+  return -ENOSYS;
+}

src/fuse_syncfs.hpp

@@ -0,0 +1,27 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#pragma once
+
+#include "fuse.h"
+
+
+namespace FUSE
+{
+  int syncfs();
+}

src/fuse_tmpfile.cpp

@@ -0,0 +1,32 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "fuse_tmpfile.hpp"
+#include "fuse_create.hpp"
+
+#include <errno.h>
+#include <stdio.h>
+
+
+int
+FUSE::tmpfile(const char       *fusepath_,
+              mode_t            mode_,
+              fuse_file_info_t *ffi_)
+{
+  return -ENOSYS;
+}

src/fuse_tmpfile.hpp

@@ -0,0 +1,32 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#pragma once
+
+#include "fuse.h"
+
+#include <sys/types.h>
+
+
+namespace FUSE
+{
+  int
+  tmpfile(const char       *fusepath,
+          mode_t            mode,
+          fuse_file_info_t *ffi);
+}

src/mergerfs.cpp

@@ -63,12 +63,16 @@
 #include "fuse_readlink.hpp"
 #include "fuse_release.hpp"
 #include "fuse_releasedir.hpp"
+#include "fuse_removemapping.hpp"
 #include "fuse_removexattr.hpp"
 #include "fuse_rename.hpp"
 #include "fuse_rmdir.hpp"
+#include "fuse_setupmapping.hpp"
 #include "fuse_setxattr.hpp"
 #include "fuse_statfs.hpp"
 #include "fuse_symlink.hpp"
+#include "fuse_syncfs.hpp"
+#include "fuse_tmpfile.hpp"
 #include "fuse_truncate.hpp"
 #include "fuse_unlink.hpp"
 #include "fuse_utimens.hpp"
@@ -127,12 +131,16 @@ namespace l
     ops_.readlink        = FUSE::readlink;
     ops_.release         = FUSE::release;
     ops_.releasedir      = FUSE::releasedir;
+    ops_.removemapping   = FUSE::removemapping;
     ops_.removexattr     = FUSE::removexattr;
     ops_.rename          = FUSE::rename;
     ops_.rmdir           = FUSE::rmdir;
+    ops_.setupmapping    = FUSE::setupmapping;
     ops_.setxattr        = FUSE::setxattr;
     ops_.statfs          = FUSE::statfs;
     ops_.symlink         = FUSE::symlink;
+    ops_.syncfs          = FUSE::syncfs;
+    ops_.tmpfile         = FUSE::tmpfile;
     ops_.truncate        = FUSE::truncate;
     ops_.unlink          = FUSE::unlink;
     ops_.utimens         = FUSE::utimens;

src/ugid.cpp

@@ -28,7 +28,7 @@ namespace ugid
   initgroups(const uid_t uid_,
              const gid_t gid_)
   {
-    static __thread gid_t_cache cache = {0};
+    static thread_local gid_t_cache cache = {0};
 
     cache.initgroups(uid_,gid_);
   }