compat/lib/rmtflags.c

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <stelian@popies.net>, 1999-2000
   6  *      Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
   7  */
   8
   9 /*
  10  * Copyright (c) 1983, 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. All advertising materials mentioning features or use of this software
  22  *    must display the following acknowledgement:
  23  *      This product includes software developed by the University of
  24  *      California, Berkeley and its contributors.
  25  * 4. Neither the name of the University nor the names of its contributors
  26  *    may be used to endorse or promote products derived from this software
  27  *    without specific prior written permission.
  28  *
  29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  39  * SUCH DAMAGE.
  40  */
  41
  42 #ifndef lint
  43 static const char rcsid[] =
  44         "$Id: rmtflags.c,v 1.2 2002/11/15 10:03:12 stelian Exp $";
  45 #endif /* not linux */
  46
  47 /*
  48  * rmt
  49  */
  50 #include <config.h>
  51 #include <fcntl.h>
  52 #include <string.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <malloc.h>
  56 #include <rmtflags.h>
  57
  58 struct openflags {
  59         char    *name;
  60         int     value;
  61 } openflags[] = {
  62         { "O_RDONLY",   O_RDONLY },
  63         { "O_WRONLY",   O_WRONLY },
  64         { "O_RDWR",     O_RDWR },
  65 #ifdef O_CREAT
  66         { "O_CREAT",    O_CREAT },
  67 #endif
  68 #ifdef O_EXCL
  69         { "O_EXCL",     O_EXCL },
  70 #endif
  71 #ifdef O_NOCTTY
  72         { "O_NOCTTY",   O_NOCTTY },
  73 #endif
  74 #ifdef O_TRUNC
  75         { "O_TRUNC",    O_TRUNC },
  76 #endif
  77 #ifdef O_APPEND
  78         { "O_APPEND",   O_APPEND },
  79 #endif
  80 #ifdef O_NONBLOCK
  81         { "O_NONBLOCK", O_NONBLOCK },
  82 #endif
  83 #ifdef O_NDELAY
  84         { "O_NDELAY",   O_NDELAY },
  85 #endif
  86 #ifdef O_SYNC
  87         { "O_SYNC",     O_SYNC },
  88 #endif
  89 #ifdef O_FSYNC
  90         { "O_FSYNC",    O_FSYNC },
  91 #endif
  92 #ifdef O_ASYNC
  93         { "O_ASYNC",    O_ASYNC },
  94 #endif
  95 #ifdef O_TEXT
  96         { "O_TEXT",     O_TEXT },
  97 #endif
  98 #ifdef O_DSYNC
  99         { "O_DSYNC",    O_DSYNC },
 100 #endif
 101 #ifdef O_RSYNC
 102         { "O_RSYNC",    O_RSYNC },
 103 #endif
 104 #ifdef O_PRIV
 105         { "O_PRIV",     O_PRIV },
 106 #endif
 107 #ifdef O_LARGEFILE
 108         { "O_LARGEFILE",O_LARGEFILE },
 109 #endif
 110         { NULL,         0 }
 111 };
 112
 113 /* Parts of this stolen again from Jörg Schilling's star package... */
 114 int
 115 rmtflags_toint(char *filemode)
 116 {
 117         char    *p = filemode;
 118         struct openflags *op;
 119         int     result = 0;
 120         int     numresult = 0;
 121         int     seentext = 0;
 122
 123         do {
 124                 /* skip space */
 125                 while (*p != '\0' && *p == ' ')
 126                         p++;
 127                 /* get O_XXXX constant */
 128                 if (p[0] != 'O' || p[1] != '_') {
 129                         /* numeric syntax detected */
 130                         numresult = atoi(filemode);
 131                         numresult &= O_RDONLY | O_WRONLY | O_RDWR;
 132                         while (*p != ' ' && *p != '\0')
 133                                 p++;
 134                         while (*p != '\0' && *p == ' ')
 135                                 p++;
 136                 }
 137
 138                 if (*p == '\0')
 139                         break;
 140
 141                 /* translate O_XXXX constant */
 142                 for (op = openflags; op->name; op++) {
 143                         int slen = strlen(op->name);
 144                         if ((strncmp(op->name, p, slen) == 0) &&
 145                             (p[slen] == '|' || p[slen] == ' ' ||
 146                              p[slen] == '\0')) {
 147                                 seentext = 1;
 148                                 result |= op->value;
 149                                 break;
 150                         }
 151                 }
 152
 153                 /* goto next constant */
 154                 p = strchr(p, '|');
 155         } while (p && *p++ == '|');
 156
 157         if (!seentext)
 158                 result = numresult;
 159         return result;
 160 }
 161
 162 char *
 163 rmtflags_tochar(int filemode)
 164 {
 165         struct openflags *op;
 166         char *result = (char *) malloc(4096);   /* enough space */
 167
 168         switch (filemode & O_ACCMODE) {
 169         case O_RDONLY:
 170                 strcpy(result, "O_RDONLY");
 171                 break;
 172         case O_WRONLY:
 173                 strcpy(result, "O_WRONLY");
 174                 break;
 175         case O_RDWR:
 176                 strcpy(result, "O_RDWR");
 177                 break;
 178         default:
 179                 strcat(result, "ERROR");
 180         }
 181         for (op = openflags; op->name; op++) {
 182                 if (op->value == O_RDONLY ||
 183                     op->value == O_WRONLY ||
 184                     op->value == O_RDWR)
 185                         continue;
 186                 if (filemode & op->value) {
 187                         strcat(result, "|");
 188                         strcat(result, op->name);
 189                 }
 190         }
 191         return result;
 192 }