IABSD.fr/src/lib/libfuse/debug.c

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• Author : helg
  Date : 2017-12-13 12:30:18
  Hash : c839d22f
  Message : Add support for the -d (-o debug) option to libfuse. Currently works for FUSE file systems that call fuse_parse_cmdline(3), fuse_main(3) or fuse_setup(3). ok mpi@, jca@

• lib/libfuse/debug.c

• /*	$OpenBSD: debug.c,v 1.2 2017/12/13 12:30:18 helg Exp $	*/
  /*
   * Copyright (c) 2011 Alexandre Ratchov <alex@caoua.org>
   *
   * Permission to use, copy, modify, and 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 <stdlib.h>
  #include <unistd.h>
  
  #include "debug.h"
  
  /*
   * debug level, -1 means uninitialized
   */
  int ifuse_debug = -1;
  
  void
  ifuse_debug_init(void)
  {
  	char *dbg;
  
  	/* Default to level 1 unless FUSE_DEBUG environment variable is set. */
  	if (ifuse_debug < 0) {
  		dbg = issetugid() ? NULL : getenv("FUSE_DEBUG");
  		if (!dbg || sscanf(dbg, "%u", &ifuse_debug) != 1)
  			ifuse_debug = 1;
  	}
  }