Annotation of prex/usr/server/fs/fatfs/fatfs_subr.c, Revision 1.1
1.1 ! nbrk 1: /*
! 2: * Copyright (c) 2005-2008, Kohsuke Ohtani
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the author nor the names of any co-contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #include <prex/prex.h>
! 31:
! 32: #include <ctype.h>
! 33: #include <string.h>
! 34: #include <unistd.h>
! 35: #include <errno.h>
! 36: #include <stdlib.h>
! 37:
! 38: #include "fatfs.h"
! 39:
! 40:
! 41: /*
! 42: * Convert file name to 8.3 format
! 43: * Ex. "foo.bar" => "foo bar"
! 44: */
! 45: void
! 46: fat_convert_name(char *org, char *name)
! 47: {
! 48: int i;
! 49:
! 50: memset(name, (int)' ', 11);
! 51: for (i = 0; i <= 11; i++) {
! 52: if (!*org)
! 53: break;
! 54: if (*org == '/')
! 55: break;
! 56: if (*org == '.') {
! 57: i = 7;
! 58: org++;
! 59: continue;
! 60: }
! 61: *(name + i) = *org;
! 62: org++;
! 63: }
! 64: }
! 65:
! 66: /*
! 67: * Restore file name to normal format
! 68: * Ex. "foo bar" => "foo.bar"
! 69: */
! 70: void
! 71: fat_restore_name(char *org, char *name)
! 72: {
! 73: int i;
! 74:
! 75: memset(name, 0, 13);
! 76: for (i = 0; i < 8; i++) {
! 77: if (*org != ' ')
! 78: *name++ = *org;
! 79: org++;
! 80: }
! 81: if (*org != ' ')
! 82: *name++ = '.';
! 83: for (i = 0; i < 3; i++) {
! 84: if (*org != ' ')
! 85: *name++ = *org;
! 86: org++;
! 87: }
! 88: }
! 89:
! 90: /*
! 91: * Compare 2 file names.
! 92: *
! 93: * Return 0 if it matches.
! 94: */
! 95: int
! 96: fat_compare_name(char *n1, char *n2)
! 97: {
! 98: int i;
! 99:
! 100: for (i = 0; i < 11; i++, n1++, n2++) {
! 101: if (toupper((int)*n1) != toupper((int)*n2))
! 102: return -1;
! 103: }
! 104: return 0;
! 105: }
! 106:
! 107: /*
! 108: * Check specified name is valid as FAT file name.
! 109: * Return true if valid.
! 110: */
! 111: int
! 112: fat_valid_name(char *name)
! 113: {
! 114: static char invalid_char[] = "*?<>|\"+=,;[] \345";
! 115: int len = 0;
! 116:
! 117: /* . or .. */
! 118: if (*name == '.') {
! 119: name++;
! 120: if (*name == '.')
! 121: name++;
! 122: return (*(name + 1) == '\0') ? 1 : 0;
! 123: }
! 124: /* First char must be alphabet or numeric */
! 125: if (!isalnum((int)*name))
! 126: return 0;
! 127: while (*name != '\0') {
! 128: if (strchr(invalid_char, *name))
! 129: return 0;
! 130: if (*name == '.')
! 131: break; /* Start of extension */
! 132: if (++len > 8)
! 133: return 0; /* Too long name */
! 134: name++;
! 135: }
! 136: if (*name == '\0')
! 137: return 1;
! 138: name++;
! 139: if (*name == '\0') /* Empty extension */
! 140: return 1;
! 141: len = 0;
! 142: while (*name != '\0') {
! 143: if (strchr(invalid_char, *name))
! 144: return 0;
! 145: if (*name == '.')
! 146: return 0; /* Second extention */
! 147: if (++len > 3)
! 148: return 0; /* Too long name */
! 149: name++;
! 150: }
! 151: return 1;
! 152: }
! 153:
! 154: /*
! 155: * mode -> attribute
! 156: */
! 157: void
! 158: fat_mode_to_attr(mode_t mode, u_char *attr)
! 159: {
! 160:
! 161: *attr = 0;
! 162: if (!(mode & S_IWRITE))
! 163: *attr |= FA_RDONLY;
! 164: if (!(mode & S_IREAD))
! 165: *attr |= FA_HIDDEN;
! 166: if (S_ISDIR(mode))
! 167: *attr |= FA_SUBDIR;
! 168: }
! 169:
! 170: /*
! 171: * attribute -> mode
! 172: */
! 173: void
! 174: fat_attr_to_mode(u_char attr, mode_t *mode)
! 175: {
! 176:
! 177: if (attr & FA_RDONLY)
! 178: *mode =
! 179: S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH |
! 180: S_IXOTH;
! 181: else
! 182: *mode = S_IRWXU | S_IRWXG | S_IRWXO;
! 183:
! 184: if (attr & FA_SUBDIR)
! 185: *mode |= S_IFDIR;
! 186: else
! 187: *mode |= S_IFREG;
! 188: }
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