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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6725 | siemargl | 1 | /* |
| 2 | Copyright (c) 1990-2000 Info-ZIP. All rights reserved. |
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| 3 | |||
| 4 | See the accompanying file LICENSE, version 2000-Apr-09 or later |
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| 5 | (the contents of which are also included in unzip.h) for terms of use. |
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| 6 | If, for some reason, all these files are missing, the Info-ZIP license |
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| 7 | also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html |
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| 8 | */ |
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| 9 | #pragma library |
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| 10 | #include |
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| 11 | #include |
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| 12 | #include |
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| 13 | #include |
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| 14 | #include |
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| 15 | #include |
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| 16 | #include |
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| 17 | #include |
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| 18 | #include |
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| 19 | #include "theos/stat.h" |
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| 20 | |||
| 21 | /* replacement for standard library functions stat and fstat */ |
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| 22 | |||
| 23 | int _stat_(struct stat* st, struct fdb* fdb); |
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| 24 | int _dstat_(struct stat* st); |
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| 25 | |||
| 26 | #define peekucb() peeknuc() |
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| 27 | |||
| 28 | /* map THEOS protection code to Unix modes */ |
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| 29 | |||
| 30 | unsigned short _tm2um_(char protect) |
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| 31 | { |
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| 32 | unsigned short umask = 0; |
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| 33 | |||
| 34 | if (!(protect & _FDB_READ_PROTECT)) |
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| 35 | umask = S_IRUSR|S_IRGRP; |
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| 36 | |||
| 37 | if (!(protect & _FDB_WRITE_PROTECT)) |
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| 38 | umask |= S_IWUSR|S_IWGRP; |
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| 39 | |||
| 40 | if (!(protect & _FDB_EXECUTE_PROTECT)) |
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| 41 | umask |= S_IXUSR|S_IXGRP; |
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| 42 | |||
| 43 | if (!(protect & _FDB_ERASE_PROTECT)) |
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| 44 | umask |= S_IEUSR|S_IEGRP; |
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| 45 | |||
| 46 | if (!(protect & _FDB_SHARED_READ_PROTECT)) { |
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| 47 | if (_osmajor > 3) |
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| 48 | umask |= S_IROTH|S_IXOTH; |
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| 49 | else |
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| 50 | umask |= S_IROTH; |
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| 51 | } |
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| 52 | |||
| 53 | if (!(protect & _FDB_SHARED_WRITE_PROTECT)) |
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| 54 | umask |= S_IWOTH; |
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| 55 | |||
| 56 | if (!(protect & _FDB_MODIFIED)) { |
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| 57 | if (_osmajor > 3) |
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| 58 | umask |= S_IMODF; |
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| 59 | else |
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| 60 | umask |= S_IXOTH; |
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| 61 | } |
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| 62 | |||
| 63 | if (protect & _FDB_NOT_HIDDEN) |
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| 64 | umask |= S_INHID; |
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| 65 | |||
| 66 | return umask; |
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| 67 | } |
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| 68 | |||
| 69 | /* map Unix modes to THEOS protections */ |
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| 70 | |||
| 71 | char _um2tm_(unsigned short mask) |
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| 72 | { |
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| 73 | char protect = 0; |
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| 74 | |||
| 75 | if (!(mask & (S_IRUSR|S_IRGRP))) |
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| 76 | protect |= _FDB_READ_PROTECT; |
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| 77 | |||
| 78 | if (!(mask & (S_IWUSR|S_IWGRP))) |
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| 79 | protect |= _FDB_WRITE_PROTECT; |
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| 80 | |||
| 81 | if (!(mask & (S_IXUSR|S_IXGRP))) |
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| 82 | protect |= _FDB_EXECUTE_PROTECT; |
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| 83 | |||
| 84 | if (!(mask & (S_IEUSR|S_IEGRP))) |
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| 85 | protect |= _FDB_ERASE_PROTECT; |
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| 86 | |||
| 87 | if (_osmajor < 4) { |
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| 88 | if (!(mask & S_IROTH)) |
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| 89 | protect |= _FDB_SHARED_READ_PROTECT; |
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| 90 | } else { |
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| 91 | if (!(mask & (S_IROTH|S_IXOTH))) |
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| 92 | protect |= _FDB_SHARED_READ_PROTECT; |
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| 93 | } |
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| 94 | |||
| 95 | if (!(mask & S_IWOTH)) |
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| 96 | protect |= _FDB_SHARED_WRITE_PROTECT; |
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| 97 | |||
| 98 | if (mask & S_IMODF && _osmajor > 3) |
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| 99 | protect |= _FDB_MODIFIED; |
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| 100 | |||
| 101 | if (mask & S_INHID && _osmajor > 3) |
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| 102 | protect |= _FDB_NOT_HIDDEN; |
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| 103 | |||
| 104 | return protect; |
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| 105 | } |
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| 106 | |||
| 107 | /* root directory stat */ |
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| 108 | |||
| 109 | static int rdirstat(char* fn, struct stat *st) |
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| 110 | { |
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| 111 | register char* p = strchr(fn, ':'); |
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| 112 | char drive; |
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| 113 | |||
| 114 | drive = p ? p[1] : 'S'; |
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| 115 | |||
| 116 | if (drive >= 'a' && drive <= 'Z') |
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| 117 | drive -= 0x40; |
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| 118 | |||
| 119 | memset(st, 0, sizeof(struct stat)); |
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| 120 | |||
| 121 | if (getlub(drive - 'A') != 255) { |
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| 122 | st->st_org = _FDB_STAT_DIRECTORY; |
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| 123 | st->st_mode = S_IFDIR|S_IRUSR|S_IWUSR|S_IROTH|S_IWOTH; |
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| 124 | st->st_nlink = 1; |
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| 125 | st->st_dev = st->st_rdev = drive - 'A'; |
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| 126 | st->st_uid = st->st_gid = getuid(); |
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| 127 | st->st_protect = _FDB_ERASE_PROTECT; |
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| 128 | return 0; |
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| 129 | } |
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| 130 | errno = _errnum = ENOENT; |
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| 131 | _errarg = fn; |
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| 132 | return -1; |
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| 133 | } |
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| 134 | |||
| 135 | /* file stat */ |
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| 136 | |||
| 137 | int _stat(const char *fn, struct stat *st) |
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| 138 | { |
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| 139 | char buf[256], buf2[256]; |
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| 140 | char *ifn; |
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| 141 | register struct fdb *fdb; |
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| 142 | register char *p; |
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| 143 | |||
| 144 | if ((ifn = (char *)malloc(strlen(fn)+1)) == NULL) { |
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| 145 | errno = _errnum = ENOMEM; |
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| 146 | return -1; |
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| 147 | } |
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| 148 | |||
| 149 | if (p = strrchr(ifn, ':')) |
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| 150 | *p = 0; |
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| 151 | |||
| 152 | /* on current drive ./:d and .:m point to current dir |
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| 153 | * on another drive to root directory */ |
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| 154 | |||
| 155 | if (! strcmp(ifn, "/") || ! strcmp(ifn, ".") || ! strcmp(ifn, "./")) { |
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| 156 | if (p == NULL) { |
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| 157 | free(ifn); |
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| 158 | /* current dir on current drive */ |
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| 159 | ifn = getcwd(buf2, 256); |
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| 160 | /* getcwd returns NULL on root dir on drive S */ |
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| 161 | if (ifn == NULL) |
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| 162 | strcpy(ifn = buf2, "/:S"); |
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| 163 | /* getcwd returns /:d on root dir on any other drive */ |
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| 164 | if (ifn[1] == ':') |
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| 165 | return rdirstat(ifn, st); |
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| 166 | } else { |
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| 167 | int rstat; |
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| 168 | *p = ':'; |
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| 169 | rstat = rdirstat(ifn, st); |
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| 170 | free(ifn); |
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| 171 | return rstat; |
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| 172 | } |
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| 173 | } |
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| 174 | |||
| 175 | if (p) |
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| 176 | *p = ':'; |
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| 177 | |||
| 178 | strcpy(buf2, ifn); |
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| 179 | /* remove trailing slash before optional disk name */ |
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| 180 | if (p = strrchr(buf2, '/')) { |
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| 181 | if (p[1] == ':') { |
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| 182 | *p = p[1]; |
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| 183 | p[1] = p[2]; |
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| 184 | p[2] = p[3]; |
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| 185 | } else if (p[1] == '\0') |
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| 186 | *p = '\0'; |
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| 187 | } |
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| 188 | /* if ifn is a file get file directory block structure and device */ |
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| 189 | if (fdb = _locate(buf2, buf, &st->st_dev)) { |
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| 190 | /* is it a file from another user... */ |
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| 191 | if (strchr(buf2, '\\') |
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| 192 | /* a public system file */ |
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| 193 | || fdb->fileowner == 0 |
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| 194 | /* or a file from the current user account ? */ |
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| 195 | || fdb->fileowner == getuid()) { |
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| 196 | /* yes, return stat */ |
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| 197 | return _stat_(st, fdb); |
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| 198 | } else { |
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| 199 | /* no, say file doesn't exist */ |
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| 200 | errno = _errnum = ENOENT; |
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| 201 | _errarg = fn; |
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| 202 | return -1; |
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| 203 | } |
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| 204 | } |
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| 205 | /* else should be a device */ |
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| 206 | st->st_rdev = st->st_dev = _lub_name(*ifn == ':' ? ifn+1 : ifn); |
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| 207 | |||
| 208 | free(ifn); |
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| 209 | if (st->st_dev != -1 && getlub(st->st_dev) != 255) |
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| 210 | return _dstat_(st); |
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| 211 | |||
| 212 | errno = _errnum = ENOENT; |
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| 213 | _errarg = fn; |
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| 214 | return -1; |
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| 215 | } |
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| 216 | |||
| 217 | int _fstat(int fd, struct stat *st) |
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| 218 | { |
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| 219 | unsigned short fsanum; |
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| 220 | struct fsa fsa; |
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| 221 | register FILE *fp; |
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| 222 | int status; |
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| 223 | register int i; |
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| 224 | register char *p; |
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| 225 | |||
| 226 | if (fd < FOPEN_MAX) { |
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| 227 | fp = &stdin[fd]; |
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| 228 | if (_fcntl(fp,1,0) & 0x80) { |
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| 229 | fsanum = (unsigned short) _fcntl(fp,83,0); |
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| 230 | st->st_dev = (unsigned short) _fcntl(fp,5,0); |
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| 231 | |||
| 232 | if (st->st_dev >= A_DISK && st->st_dev <= Z_DISK) { |
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| 233 | for (i = 0, fsanum *= sizeof(fsa), p = (char *) &fsa; |
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| 234 | i < (sizeof(fsa)); |
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| 235 | i++, fsanum++, p++) |
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| 236 | *p = _peekfsa((char *) fsanum); |
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| 237 | status = _stat_(st, (struct fdb*) &fsa); |
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| 238 | if ((st->st_blksize = _fcntl(fp,817,0)) == 0) |
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| 239 | st->st_blksize = BUFSIZ; |
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| 240 | return status; |
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| 241 | } |
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| 242 | return _dstat_(st); |
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| 243 | } |
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| 244 | } |
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| 245 | errno = _errnum = EBADF; |
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| 246 | return -1; |
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| 247 | } |
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| 248 | |||
| 249 | static int _isprt(int dev) |
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| 250 | { |
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| 251 | return IS_PRT_LUB(dev); |
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| 252 | } |
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| 253 | |||
| 254 | /* device stat */ |
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| 255 | |||
| 256 | int _dstat_(st) |
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| 257 | register struct stat* st; |
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| 258 | { |
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| 259 | register struct ucb* ucb; |
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| 260 | |||
| 261 | ucb = getucb(st->st_dev); |
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| 262 | st->st_ino = 0; |
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| 263 | if (st->st_dev <= Z_DISK |
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| 264 | || (st->st_dev >= TAPE1 && st->st_dev <= TAPE4)) { |
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| 265 | st->st_mode = S_IFBLK | S_IWUSR | S_IRUSR; |
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| 266 | if (peekucb(&ucb->devowner) == 255) |
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| 267 | st->st_mode |= S_IWGRP | S_IWOTH | S_IRGRP | S_IROTH; |
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| 268 | } else { |
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| 269 | st->st_mode = S_IFCHR | S_IWUSR; |
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| 270 | if (_isprt(st->st_dev)) |
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| 271 | st->st_mode |= S_IRUSR; |
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| 272 | if (peekucb(&ucb->devowner) == 255) { |
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| 273 | st->st_mode |= S_IWGRP | S_IWOTH; |
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| 274 | if (_isprt(st->st_dev)) |
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| 275 | st->st_mode |= S_IRGRP | S_IROTH; |
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| 276 | } |
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| 277 | } |
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| 278 | st->st_nlink = 1; |
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| 279 | st->st_uid = st->st_gid = getuid(); |
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| 280 | st->st_size = 0; |
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| 281 | st->st_atime = st->st_mtime = st->st_ctime = 0; |
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| 282 | st->st_rlen = 0; |
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| 283 | st->st_klen = 0; |
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| 284 | st->st_grow = 0; |
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| 285 | st->st_blksize = 0; |
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| 286 | return 0; |
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| 287 | } |
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| 288 | |||
| 289 | /* regular file stat */ |
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| 290 | |||
| 291 | int _stat_(st, fdb) |
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| 292 | register struct stat* st; |
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| 293 | register struct fdb* fdb; |
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| 294 | { |
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| 295 | st->st_rdev = st->st_dev; |
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| 296 | st->st_ino = 0; |
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| 297 | st->st_org = fdb->filestat; |
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| 298 | |||
| 299 | switch (fdb->filestat) { |
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| 300 | case _FDB_STAT_LIBRARY: st->st_mode = S_IFLIB; break; |
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| 301 | case _FDB_STAT_DIRECTORY: st->st_mode = S_IFDIR; break; |
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| 302 | case _FDB_STAT_STREAM: st->st_mode = S_IFREG; break; |
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| 303 | case _FDB_STAT_RELATIVE: st->st_mode = S_IFREL; break; |
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| 304 | case _FDB_STAT_KEYED: st->st_mode = S_IFKEY; break; |
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| 305 | case _FDB_STAT_INDEXED: st->st_mode = S_IFIND; break; |
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| 306 | case _FDB_STAT_RANDOM: st->st_mode = S_IFRND; break; |
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| 307 | case _FDB_STAT_PROGRAM: st->st_mode = S_IFR16; break; |
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| 308 | case _FDB_STAT_16_BIT_PROGRAM: st->st_mode = S_IFP16; break; |
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| 309 | case _FDB_STAT_32_BIT_PROGRAM: st->st_mode = S_IFP32; break; |
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| 310 | } |
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| 311 | |||
| 312 | st->st_mode |= _tm2um_(st->st_protect = fdb->protect); |
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| 313 | st->st_nlink = 1; |
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| 314 | st->st_uid = st->st_gid = fdb->fileowner; |
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| 315 | st->st_size = fdb->filesize; |
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| 316 | st->st_atime = st->st_mtime = st->st_ctime = getfiledate(fdb); |
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| 317 | st->st_rlen = fdb->reclen; |
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| 318 | st->st_klen = fdb->keylen; |
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| 319 | st->st_grow = fdb->filegrow; |
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| 320 | st->st_blksize = 0; |
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| 321 | return 0; |
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| 322 | } |
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| 323 | |||
| 324 | #include |
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| 325 | |||
| 326 | struct dirent* _opendir(const char* dirpath) |
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| 327 | { |
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| 328 | int l; |
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| 329 | char *p; |
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| 330 | struct dirent* dir; |
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| 331 | char *mypath = NULL; |
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| 332 | |||
| 333 | if (dirpath != NULL && |
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| 334 | (mypath = (char *)malloc(strlen(dirpath)+1)) == NULL) { |
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| 335 | errno = _errnum = ENOMEM; |
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| 336 | return NULL; |
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| 337 | } |
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| 338 | |||
| 339 | if (mypath) { |
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| 340 | l = strlen(mypath); |
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| 341 | if (l) { |
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| 342 | p = dirpath + l - 1; |
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| 343 | if (*p == '/') { |
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| 344 | *p = '\0'; |
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| 345 | dir = opendir(dirpath); |
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| 346 | *p = '/'; |
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| 347 | return dir; |
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| 348 | } |
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| 349 | } |
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| 350 | |||
| 351 | } |
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| 352 | return opendir(mypath); |
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| 353 | } |