libutil.h

   1 /*
   2  * Copyright (c) 1996  Peter Wemm <peter@FreeBSD.org>.
   3  * All rights reserved.
   4  * Copyright (c) 2002 Networks Associates Technology, Inc.
   5  * All rights reserved.
   6  *
   7  * Portions of this software were developed for the FreeBSD Project by
   8  * ThinkSec AS and NAI Labs, the Security Research Division of Network
   9  * Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
  10  * ("CBOSS"), as part of the DARPA CHATS research program.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, is permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. The name of the author may not be used to endorse or promote
  21  *    products derived from this software without specific prior written
  22  *    permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * $FreeBSD: src/lib/libutil/libutil.h,v 1.42 2006/02/18 11:25:28 des Exp $
  37  */
  38
  39 #ifndef _LIBUTIL_H_
  40 #define _LIBUTIL_H_
  41
  42 #include <unistd.h>
  43 #include <stdbool.h>
  44
  45 #ifdef _SYS_PARAM_H_
  46 /* for pidfile.c */
  47 struct pidfh {
  48         int     pf_fd;
  49         char    pf_path[MAXPATHLEN + 1];
  50         dev_t   pf_dev;
  51         ino_t   pf_ino;
  52 };
  53 #endif
  54
  55 struct in_addr;
  56 struct sockaddr;
  57
  58 __BEGIN_DECLS
  59 int     humanize_number(char *_buf, size_t _len, int64_t _number,
  60             const char *_suffix, int _scale, int _flags);
  61
  62 int     realhostname(char *host, size_t hsize, const struct in_addr *ip);
  63 int     realhostname_sa(char *host, size_t hsize, struct sockaddr *addr,
  64                              int addrlen);
  65
  66 #ifdef _SYS_PARAM_H_
  67 struct pidfh *pidfile_open(const char *path, mode_t mode, pid_t *pidptr);
  68 int pidfile_write(struct pidfh *pfh);
  69 int pidfile_close(struct pidfh *pfh);
  70 int pidfile_remove(struct pidfh *pfh);
  71 #endif
  72
  73 int reexec_to_match_kernel(void);
  74 int reexec_to_match_lp64ness(bool isLP64);
  75
  76 __END_DECLS
  77
  78 /* return values from realhostname() */
  79 #define HOSTNAME_FOUND          (0)
  80 #define HOSTNAME_INCORRECTNAME  (1)
  81 #define HOSTNAME_INVALIDADDR    (2)
  82 #define HOSTNAME_INVALIDNAME    (3)
  83
  84 /* humanize_number(3) */
  85 #define HN_DECIMAL              0x01
  86 #define HN_NOSPACE              0x02
  87 #define HN_B                    0x04
  88 #define HN_DIVISOR_1000         0x08
  89
  90 #define HN_GETSCALE             0x10
  91 #define HN_AUTOSCALE            0x20
  92
  93 #endif /* !_LIBUTIL_H_ */