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. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #ifndef lint
  39 static const char rcsid[] =
  40         "$Id: rmtflags.c,v 1.3 2003/03/30 15:40:35 stelian Exp $";
  41 #endif /* not linux */
  42
  43 /*
  44  * rmt
  45  */
  46 #include <config.h>
  47 #include <fcntl.h>
  48 #include <string.h>
  49 #include <stdio.h>
  50 #include <stdlib.h>
  51 #include <malloc.h>
  52 #include <rmtflags.h>
  53
  54 struct openflags {
  55         char    *name;
  56         int     value;
  57 } openflags[] = {
  58         { "O_RDONLY",   O_RDONLY },
  59         { "O_WRONLY",   O_WRONLY },
  60         { "O_RDWR",     O_RDWR },
  61 #ifdef O_CREAT
  62         { "O_CREAT",    O_CREAT },
  63 #endif
  64 #ifdef O_EXCL
  65         { "O_EXCL",     O_EXCL },
  66 #endif
  67 #ifdef O_NOCTTY
  68         { "O_NOCTTY",   O_NOCTTY },
  69 #endif
  70 #ifdef O_TRUNC
  71         { "O_TRUNC",    O_TRUNC },
  72 #endif
  73 #ifdef O_APPEND
  74         { "O_APPEND",   O_APPEND },
  75 #endif
  76 #ifdef O_NONBLOCK
  77         { "O_NONBLOCK", O_NONBLOCK },
  78 #endif
  79 #ifdef O_NDELAY
  80         { "O_NDELAY",   O_NDELAY },
  81 #endif
  82 #ifdef O_SYNC
  83         { "O_SYNC",     O_SYNC },
  84 #endif
  85 #ifdef O_FSYNC
  86         { "O_FSYNC",    O_FSYNC },
  87 #endif
  88 #ifdef O_ASYNC
  89         { "O_ASYNC",    O_ASYNC },
  90 #endif
  91 #ifdef O_TEXT
  92         { "O_TEXT",     O_TEXT },
  93 #endif
  94 #ifdef O_DSYNC
  95         { "O_DSYNC",    O_DSYNC },
  96 #endif
  97 #ifdef O_RSYNC
  98         { "O_RSYNC",    O_RSYNC },
  99 #endif
 100 #ifdef O_PRIV
 101         { "O_PRIV",     O_PRIV },
 102 #endif
 103 #ifdef O_LARGEFILE
 104         { "O_LARGEFILE",O_LARGEFILE },
 105 #endif
 106         { NULL,         0 }
 107 };
 108
 109 /* Parts of this stolen again from Jörg Schilling's star package... */
 110 int
 111 rmtflags_toint(char *filemode)
 112 {
 113         char    *p = filemode;
 114         struct openflags *op;
 115         int     result = 0;
 116         int     numresult = 0;
 117         int     seentext = 0;
 118
 119         do {
 120                 /* skip space */
 121                 while (*p != '\0' && *p == ' ')
 122                         p++;
 123                 /* get O_XXXX constant */
 124                 if (p[0] != 'O' || p[1] != '_') {
 125                         /* numeric syntax detected */
 126                         numresult = atoi(filemode);
 127                         numresult &= O_RDONLY | O_WRONLY | O_RDWR;
 128                         while (*p != ' ' && *p != '\0')
 129                                 p++;
 130                         while (*p != '\0' && *p == ' ')
 131                                 p++;
 132                 }
 133
 134                 if (*p == '\0')
 135                         break;
 136
 137                 /* translate O_XXXX constant */
 138                 for (op = openflags; op->name; op++) {
 139                         int slen = strlen(op->name);
 140                         if ((strncmp(op->name, p, slen) == 0) &&
 141                             (p[slen] == '|' || p[slen] == ' ' ||
 142                              p[slen] == '\0')) {
 143                                 seentext = 1;
 144                                 result |= op->value;
 145                                 break;
 146                         }
 147                 }
 148
 149                 /* goto next constant */
 150                 p = strchr(p, '|');
 151         } while (p && *p++ == '|');
 152
 153         if (!seentext)
 154                 result = numresult;
 155         return result;
 156 }
 157
 158 char *
 159 rmtflags_tochar(int filemode)
 160 {
 161         struct openflags *op;
 162         char *result = (char *) malloc(4096);   /* enough space */
 163
 164         switch (filemode & O_ACCMODE) {
 165         case O_RDONLY:
 166                 strcpy(result, "O_RDONLY");
 167                 break;
 168         case O_WRONLY:
 169                 strcpy(result, "O_WRONLY");
 170                 break;
 171         case O_RDWR:
 172                 strcpy(result, "O_RDWR");
 173                 break;
 174         default:
 175                 strcat(result, "ERROR");
 176         }
 177         for (op = openflags; op->name; op++) {
 178                 if (op->value == O_RDONLY ||
 179                     op->value == O_WRONLY ||
 180                     op->value == O_RDWR)
 181                         continue;
 182                 if (filemode & op->value) {
 183                         strcat(result, "|");
 184                         strcat(result, op->name);
 185                 }
 186         }
 187         return result;
 188 }