usr/src/lib/libast/common/string/fmtperm.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * Glenn Fowler
  25  * AT&T Bell Laboratories
  26  *
  27  * return strperm() expression for perm
  28  */
  29
  30 #include <ast.h>
  31 #include <ls.h>
  32
  33 char*
  34 fmtperm(register int perm)
  35 {
  36         register char*  s;
  37         char*           buf;
  38
  39         s = buf = fmtbuf(32);
  40
  41         /*
  42          * u
  43          */
  44
  45         *s++ = 'u';
  46         *s++ = '=';
  47         if (perm & S_ISVTX)
  48                 *s++ = 't';
  49         if (perm & S_ISUID)
  50                 *s++ = 's';
  51         if (perm & S_IRUSR)
  52                 *s++ = 'r';
  53         if (perm & S_IWUSR)
  54                 *s++ = 'w';
  55         if (perm & S_IXUSR)
  56                 *s++ = 'x';
  57         if ((perm & (S_ISGID|S_IXGRP)) == S_ISGID)
  58                 *s++ = 'l';
  59
  60         /*
  61          * g
  62          */
  63
  64         *s++ = ',';
  65         *s++ = 'g';
  66         *s++ = '=';
  67         if ((perm & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP))
  68                 *s++ = 's';
  69         if (perm & S_IRGRP)
  70                 *s++ = 'r';
  71         if (perm & S_IWGRP)
  72                 *s++ = 'w';
  73         if (perm & S_IXGRP)
  74                 *s++ = 'x';
  75
  76         /*
  77          * o
  78          */
  79
  80         *s++ = ',';
  81         *s++ = 'o';
  82         *s++ = '=';
  83         if (perm & S_IROTH)
  84                 *s++ = 'r';
  85         if (perm & S_IWOTH)
  86                 *s++ = 'w';
  87         if (perm & S_IXOTH)
  88                 *s++ = 'x';
  89         *s = 0;
  90         return buf;
  91 }