usr.sbin/mtree/stat_flags.c

   1 /*      @(#)stat_flags.c        8.2 (Berkeley) 7/28/94  */
   2 /*      $NetBSD: stat_flags.c,v 1.2 2007/01/16 17:34:02 cbiere Exp $    */
   3
   4 /*-
   5  * Copyright (c) 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #if HAVE_NBTOOL_CONFIG_H
  34 #include "nbtool_config.h"
  35 #else
  36 #define HAVE_STRUCT_STAT_ST_FLAGS 1
  37 #endif
  38
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41 #include <fts.h>
  42 #include <stddef.h>
  43 #include <stdio.h>
  44 #include <string.h>
  45 #include <stdlib.h>
  46
  47 #include "extern.h"
  48
  49 #define SAPPEND(s) do {                                                 \
  50         if (prefix != NULL)                                             \
  51                 (void)strlcat(string, prefix, sizeof(string));          \
  52         (void)strlcat(string, s, sizeof(string));                       \
  53         prefix = ",";                                                   \
  54 } while (/* CONSTCOND */ 0)
  55
  56 /*
  57  * flags_to_string --
  58  *      Convert stat flags to a comma-separated string.  If no flags
  59  *      are set, return the default string.
  60  */
  61 char *
  62 flags_to_string(u_long flags, const char *def)
  63 {
  64         char string[128];
  65         const char *prefix;
  66
  67         string[0] = '\0';
  68         prefix = NULL;
  69 #if HAVE_STRUCT_STAT_ST_FLAGS
  70         if (flags & UF_APPEND)
  71                 SAPPEND("uappnd");
  72         if (flags & UF_IMMUTABLE)
  73                 SAPPEND("uchg");
  74         if (flags & UF_NODUMP)
  75                 SAPPEND("nodump");
  76         if (flags & UF_OPAQUE)
  77                 SAPPEND("opaque");
  78         if (flags & SF_APPEND)
  79                 SAPPEND("sappnd");
  80         if (flags & SF_ARCHIVED)
  81                 SAPPEND("arch");
  82         if (flags & SF_IMMUTABLE)
  83                 SAPPEND("schg");
  84 #ifdef SF_SNAPSHOT
  85         if (flags & SF_SNAPSHOT)
  86                 SAPPEND("snap");
  87 #endif
  88 #endif
  89         if (prefix != NULL)
  90                 return strdup(string);
  91         return strdup(def);
  92 }
  93
  94 #define TEST(a, b, f) {                                                 \
  95         if (!strcmp(a, b)) {                                            \
  96                 if (clear) {                                            \
  97                         if (clrp)                                       \
  98                                 *clrp |= (f);                           \
  99                         if (setp)                                       \
 100                                 *setp &= ~(f);                          \
 101                 } else {                                                \
 102                         if (setp)                                       \
 103                                 *setp |= (f);                           \
 104                         if (clrp)                                       \
 105                                 *clrp &= ~(f);                          \
 106                 }                                                       \
 107                 break;                                                  \
 108         }                                                               \
 109 }
 110
 111 /*
 112  * string_to_flags --
 113  *      Take string of arguments and return stat flags.  Return 0 on
 114  *      success, 1 on failure.  On failure, stringp is set to point
 115  *      to the offending token.
 116  */
 117 int
 118 string_to_flags(char **stringp, u_long *setp, u_long *clrp)
 119 {
 120         int clear;
 121         char *string, *p;
 122
 123         if (setp)
 124                 *setp = 0;
 125         if (clrp)
 126                 *clrp = 0;
 127
 128 #if HAVE_STRUCT_STAT_ST_FLAGS
 129         string = *stringp;
 130         while ((p = strsep(&string, "\t ,")) != NULL) {
 131                 clear = 0;
 132                 *stringp = p;
 133                 if (*p == '\0')
 134                         continue;
 135                 if (p[0] == 'n' && p[1] == 'o') {
 136                         clear = 1;
 137                         p += 2;
 138                 }
 139                 switch (p[0]) {
 140                 case 'a':
 141                         TEST(p, "arch", SF_ARCHIVED);
 142                         TEST(p, "archived", SF_ARCHIVED);
 143                         return (1);
 144                 case 'd':
 145                         clear = !clear;
 146                         TEST(p, "dump", UF_NODUMP);
 147                         return (1);
 148                 case 'n':
 149                                 /*
 150                                  * Support `nonodump'. Note that
 151                                  * the state of clear is not changed.
 152                                  */
 153                         TEST(p, "nodump", UF_NODUMP);
 154                         return (1);
 155                 case 'o':
 156                         TEST(p, "opaque", UF_OPAQUE);
 157                         return (1);
 158                 case 's':
 159                         TEST(p, "sappnd", SF_APPEND);
 160                         TEST(p, "sappend", SF_APPEND);
 161                         TEST(p, "schg", SF_IMMUTABLE);
 162                         TEST(p, "schange", SF_IMMUTABLE);
 163                         TEST(p, "simmutable", SF_IMMUTABLE);
 164                         return (1);
 165                 case 'u':
 166                         TEST(p, "uappnd", UF_APPEND);
 167                         TEST(p, "uappend", UF_APPEND);
 168                         TEST(p, "uchg", UF_IMMUTABLE);
 169                         TEST(p, "uchange", UF_IMMUTABLE);
 170                         TEST(p, "uimmutable", UF_IMMUTABLE);
 171                         return (1);
 172                 default:
 173                         return (1);
 174                 }
 175         }
 176 #endif
 177
 178         return (0);
 179 }