Mercurial > dwindows
annotate os2/dirent.c @ 525:2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
with VAC and EMX.
| author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
|---|---|
| date | Sat, 20 Mar 2004 01:21:13 +0000 |
| parents | 0e6f09149eaa |
| children | e0ea29c3d1eb |
| rev | line source |
|---|---|
| 3 | 1 #include <stdio.h> |
| 2 #include <stdlib.h> | |
| 3 #include <string.h> | |
| 4 #include <ctype.h> | |
| 5 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
6 #define INCL_DOSFILEMGR |
|
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
7 #define INCL_DOSERRORS |
|
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
8 #include "dw.h" |
|
24
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
9 #include "platform/dirent.h" |
| 3 | 10 #include <errno.h> |
| 11 | |
| 12 # define FFBUF FILEFINDBUF3 | |
| 13 # define Word ULONG | |
| 14 /* | |
| 15 * LS20 recommends a request count of 100, but according to the | |
| 16 * APAR text it does not lead to missing files, just to funny | |
| 17 * numbers of returned entries. | |
| 18 * | |
| 19 * LS30 HPFS386 requires a count greater than 2, or some files | |
| 20 * are missing (those starting with a character less that '.'). | |
| 21 * | |
| 22 * Novell looses entries which overflow the buffer. In previous | |
| 23 * versions of dirent2, this could have lead to missing files | |
| 24 * when the average length of 100 directory entries was 40 bytes | |
| 25 * or more (quite unlikely for files on a Novell server). | |
| 26 * | |
| 27 * Conclusion: Make sure that the entries all fit into the buffer | |
| 28 * and that the buffer is large enough for more than 2 entries | |
| 29 * (each entry is at most 300 bytes long). And ignore the LS20 | |
| 30 * effect. | |
| 31 */ | |
| 32 # define Count 25 | |
| 33 # define BufSz (25 * (sizeof(FILEFINDBUF3)+1)) | |
| 34 | |
| 35 #if defined(__IBMC__) || defined(__IBMCPP__) | |
| 36 #define error(rc) _doserrno = rc, errno = EOS2ERR | |
| 37 #else | |
| 38 #define error(rc) errno = 255 | |
| 39 #endif | |
| 40 | |
| 41 struct _dirdescr { | |
| 42 HDIR handle; /* DosFindFirst handle */ | |
| 43 char fstype; /* filesystem type */ | |
| 44 Word count; /* valid entries in <ffbuf> */ | |
| 45 long number; /* absolute number of next entry */ | |
| 46 int index; /* relative number of next entry */ | |
| 47 FFBUF * next; /* pointer to next entry */ | |
| 48 char name[MAXPATHLEN+3]; /* directory name */ | |
| 49 unsigned attrmask; /* attribute mask for seekdir */ | |
| 50 struct dirent entry; /* buffer for directory entry */ | |
| 51 BYTE ffbuf[BufSz]; | |
| 52 }; | |
| 53 | |
| 54 /* | |
| 55 * Return first char of filesystem type, or 0 if unknown. | |
| 56 */ | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
57 static char API getFSType(const char *path) |
| 3 | 58 { |
| 59 static char cache[1+26]; | |
| 60 char drive[3], info[512]; | |
| 61 Word unit, infolen; | |
| 62 char r; | |
| 63 | |
|
289
0e6f09149eaa
Fixed some EMX warnings.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
174
diff
changeset
|
64 if (isalpha((int)path[0]) && path[1] == ':') { |
| 3 | 65 unit = toupper(path[0]) - '@'; |
| 66 path += 2; | |
| 67 } else { | |
| 68 ULONG driveMap; | |
| 69 if (DosQueryCurrentDisk(&unit, &driveMap)) | |
| 70 return 0; | |
| 71 } | |
| 72 | |
| 73 if ((path[0] == '\\' || path[0] == '/') | |
| 74 && (path[1] == '\\' || path[1] == '/')) | |
| 75 return 0; | |
| 76 | |
| 77 if (cache [unit]) | |
| 78 return cache [unit]; | |
| 79 | |
| 80 drive[0] = '@' + unit; | |
| 81 drive[1] = ':'; | |
| 82 drive[2] = '\0'; | |
| 83 infolen = sizeof info; | |
| 84 if (DosQueryFSAttach(drive, 0, FSAIL_QUERYNAME, (PVOID)info, &infolen)) | |
| 85 return 0; | |
| 86 if (infolen >= sizeof(FSQBUFFER2)) { | |
| 87 FSQBUFFER2 *p = (FSQBUFFER2 *)info; | |
| 88 r = p->szFSDName[p->cbName]; | |
| 89 } else | |
| 90 r = 0; | |
| 91 return cache [unit] = r; | |
| 92 } | |
| 93 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
94 char * API _abs_path(const char *name, char *buffer, int len) |
| 3 | 95 { |
| 96 char buf[4]; | |
|
289
0e6f09149eaa
Fixed some EMX warnings.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
174
diff
changeset
|
97 if (isalpha((int)name[0]) && name[1] == ':' && name[2] == '\0') { |
| 3 | 98 buf[0] = name[0]; |
| 99 buf[1] = name[1]; | |
| 100 buf[2] = '.'; | |
| 101 buf[3] = '\0'; | |
| 102 name = buf; | |
| 103 } | |
| 104 if (DosQueryPathInfo((PSZ)name, FIL_QUERYFULLNAME, buffer, len)) | |
| 105 return NULL; | |
| 106 return buffer; | |
| 107 } | |
| 108 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
109 DIR * API _openxdir(const char *path, unsigned att_mask) |
| 3 | 110 { |
| 111 DIR *dir; | |
| 112 char name[MAXPATHLEN+3]; | |
| 113 Word rc; | |
| 114 | |
|
24
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
115 if(!path) |
|
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
116 return NULL; |
|
d9e87e8bcf1d
Updated dynamic windows to build with EMX.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
3
diff
changeset
|
117 |
| 3 | 118 dir = malloc(sizeof(DIR)); |
| 119 if (dir == NULL) { | |
| 120 errno = ENOMEM; | |
| 121 return NULL; | |
| 122 } | |
| 123 | |
| 124 strncpy(name, path, MAXPATHLEN); | |
| 125 name[MAXPATHLEN] = '\0'; | |
| 126 switch (name[strlen(name)-1]) { | |
| 127 default: | |
| 128 strcat(name, "\\"); | |
| 129 case '\\': | |
| 130 case '/': | |
| 131 case ':': | |
| 132 ; | |
| 133 } | |
| 134 strcat(name, "."); | |
| 135 if (!abs_path(name, dir->name, MAXPATHLEN+1)) | |
| 136 strcpy(dir->name, name); | |
| 137 if (dir->name[strlen(dir->name)-1] == '\\') | |
| 138 strcat(dir->name, "*"); | |
| 139 else | |
| 140 strcat(dir->name, "\\*"); | |
| 141 | |
| 142 dir->fstype = getFSType(dir->name); | |
| 143 dir->attrmask = att_mask | A_DIR; | |
| 144 | |
| 145 dir->handle = HDIR_CREATE; | |
| 146 dir->count = 100; | |
| 147 rc = DosFindFirst(dir->name, &dir->handle, dir->attrmask, | |
| 148 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); | |
| 149 switch (rc) { | |
| 150 default: | |
| 151 free(dir); | |
| 152 error(rc); | |
| 153 return NULL; | |
| 154 case NO_ERROR: | |
| 155 case ERROR_NO_MORE_FILES: | |
| 156 ; | |
| 157 } | |
| 158 | |
| 159 dir->number = 0; | |
| 160 dir->index = 0; | |
| 161 dir->next = (FFBUF *)dir->ffbuf; | |
| 162 | |
| 163 return (DIR *)dir; | |
| 164 } | |
| 165 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
166 DIR * API _opendir(const char *pathname) |
| 3 | 167 { |
| 168 return openxdir(pathname, 0); | |
| 169 } | |
| 170 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
171 struct dirent * API _readdir(DIR *dir) |
| 3 | 172 { |
| 173 static int dummy_ino = 2; | |
| 174 | |
| 175 if (dir->index == dir->count) { | |
| 176 Word rc; | |
| 177 dir->count = 100; | |
| 178 rc = DosFindNext(dir->handle, dir->ffbuf, | |
| 179 sizeof dir->ffbuf, &dir->count); | |
| 180 if (rc) { | |
| 181 error(rc); | |
| 182 return NULL; | |
| 183 } | |
| 184 | |
| 185 dir->index = 0; | |
| 186 dir->next = (FFBUF *)dir->ffbuf; | |
| 187 } | |
| 188 | |
| 189 if (dir->index == dir->count) | |
| 190 return NULL; | |
| 191 | |
| 192 memcpy(dir->entry.d_name, dir->next->achName, dir->next->cchName); | |
| 193 dir->entry.d_name[dir->next->cchName] = '\0'; | |
| 194 dir->entry.d_ino = dummy_ino++; | |
| 195 dir->entry.d_reclen = dir->next->cchName; | |
| 196 dir->entry.d_namlen = dir->next->cchName; | |
| 197 dir->entry.d_size = dir->next->cbFile; | |
| 198 dir->entry.d_attribute = dir->next->attrFile; | |
| 199 dir->entry.d_time = *(USHORT *)&dir->next->ftimeLastWrite; | |
| 200 dir->entry.d_date = *(USHORT *)&dir->next->fdateLastWrite; | |
| 201 | |
| 202 switch (dir->fstype) { | |
| 203 case 'F': /* FAT */ | |
| 204 case 'C': /* CDFS */ | |
| 205 if (dir->next->attrFile & FILE_DIRECTORY) | |
| 206 strupr(dir->entry.d_name); | |
| 207 else | |
| 208 strlwr(dir->entry.d_name); | |
| 209 } | |
| 210 | |
| 211 dir->next = (FFBUF *)((BYTE *)dir->next + dir->next->oNextEntryOffset); | |
| 212 ++dir->number; | |
| 213 ++dir->index; | |
| 214 | |
| 215 return &dir->entry; | |
| 216 } | |
| 217 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
218 long API _telldir(DIR *dir) |
| 3 | 219 { |
| 220 return dir->number; | |
| 221 } | |
| 222 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
223 void API _seekdir(DIR *dir, long off) |
| 3 | 224 { |
| 225 if (dir->number > off) { | |
| 226 char name[MAXPATHLEN+2]; | |
| 227 Word rc; | |
| 228 | |
| 229 DosFindClose(dir->handle); | |
| 230 | |
| 231 strcpy(name, dir->name); | |
| 232 strcat(name, "*"); | |
| 233 | |
| 234 dir->handle = HDIR_CREATE; | |
| 235 dir->count = 32767; | |
| 236 rc = DosFindFirst(name, &dir->handle, dir->attrmask, | |
| 237 dir->ffbuf, sizeof dir->ffbuf, &dir->count, FIL_STANDARD); | |
| 238 switch (rc) { | |
| 239 default: | |
| 240 error(rc); | |
| 241 return; | |
| 242 case NO_ERROR: | |
| 243 case ERROR_NO_MORE_FILES: | |
| 244 ; | |
| 245 } | |
| 246 | |
| 247 dir->number = 0; | |
| 248 dir->index = 0; | |
| 249 dir->next = (FFBUF *)dir->ffbuf; | |
| 250 } | |
| 251 | |
| 252 while (dir->number < off && readdir(dir)) | |
| 253 ; | |
| 254 } | |
| 255 | |
|
525
2ff26b697877
Fixes for building with Innotek GCC. Will have to check for regressions
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents:
289
diff
changeset
|
256 void API _closedir(DIR *dir) |
| 3 | 257 { |
| 258 DosFindClose(dir->handle); | |
| 259 free(dir); | |
| 260 } | |
| 261 | |
| 262 /*****************************************************************************/ | |
| 263 | |
| 264 #ifdef TEST | |
| 265 | |
| 266 main(int argc, char **argv) | |
| 267 { | |
| 268 int i; | |
| 269 DIR *dir; | |
| 270 struct dirent *ep; | |
| 271 | |
| 272 for (i = 1; i < argc; ++i) { | |
| 273 dir = opendir(argv[i]); | |
| 274 if (!dir) | |
| 275 continue; | |
| 276 while (ep = readdir(dir)) | |
| 277 if (strchr("\\/:", argv[i] [strlen(argv[i]) - 1])) | |
| 278 printf("%s%s\n", argv[i], ep->d_name); | |
| 279 else | |
| 280 printf("%s/%s\n", argv[i], ep->d_name); | |
| 281 closedir(dir); | |
| 282 } | |
| 283 | |
| 284 return 0; | |
| 285 } | |
| 286 | |
| 287 #endif | |
| 288 |