include/sys/utsname.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  28  *
  29  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32
  33 #ifndef _SYS_UTSNAME_H
  34 #define _SYS_UTSNAME_H
  35
  36 #include <sys/feature_tests.h>
  37
  38 #ifdef _KERNEL
  39 #include <sys/stdbool.h>
  40 #endif
  41
  42 #ifdef  __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 #define _SYS_NMLN       257     /* 4.0 size of utsname elements */
  47                                 /* Must be at least 257 to      */
  48                                 /* support Internet hostnames.  */
  49
  50 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  51 #ifndef SYS_NMLN
  52 #define SYS_NMLN        _SYS_NMLN
  53 #endif
  54 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  55
  56 struct utsname {
  57         char    sysname[_SYS_NMLN];
  58         char    nodename[_SYS_NMLN];
  59         char    release[_SYS_NMLN];
  60         char    version[_SYS_NMLN];
  61         char    machine[_SYS_NMLN];
  62 };
  63
  64 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  65 extern struct utsname utsname;
  66 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  67
  68 #if !defined(_KERNEL)
  69
  70 #if defined(__i386) && !defined(__amd64)
  71
  72 extern int uname(struct utsname *);
  73 extern int _uname(struct utsname *);
  74
  75 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  76 extern int nuname(struct utsname *);
  77 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  78 extern int _nuname(struct utsname *);
  79
  80 /*
  81  * On i386 in SVID.2 uname() returns a utsname structure with 8 byte members,
  82  * and nuname() returns the real struct utsname.  In SVID.3 uname and nuname
  83  * are equivalent.  Anyone who includes this header gets the SVID.3 behaviour.
  84  * The SVID.2 behaviour exists solely for compatibility, and is what is
  85  * implemented by the libc uname/_uname entrypoints.
  86  */
  87 #ifdef __PRAGMA_REDEFINE_EXTNAME
  88 #pragma redefine_extname        uname   _nuname
  89 #pragma redefine_extname        _uname  _nuname
  90 #else
  91 #define uname   _nuname
  92 #define _uname  _nuname
  93 #endif
  94
  95 #else   /* defined(__i386) */
  96
  97 extern int uname(struct utsname *);
  98
  99 #endif  /* defined(__i386) */
 100
 101 #else   /* !(_KERNEL) */
 102 /*
 103  * Routine to retrieve the nodename as seen in the current process's zone.
 104  */
 105 extern char *uts_nodename(void);
 106
 107 /*
 108  * Routines to access parts of the utsname.
 109  */
 110 extern const struct utsname *utsname_get(bool alt);
 111 extern void utsname_set_machine(const char *machine);
 112
 113 /*
 114  * Alternate UNAME values to use if uarea->u_flags & U_FLAG_ALTUNAME is set.
 115  */
 116 extern struct utsname utsname_alt;
 117
 118 #endif  /* !(_KERNEL) */
 119
 120 #ifdef  __cplusplus
 121 }
 122 #endif
 123
 124 #endif  /* _SYS_UTSNAME_H */