69e476dcd5 2019-05-02 1: #include <xvfs-core.h>
d121970301 2019-05-02 2: #include <string.h>
38bed7cee0 2019-09-13 3: #include <sys/stat.h>
38bed7cee0 2019-09-13 4: #include <errno.h>
38bed7cee0 2019-09-13 5: #include <fcntl.h>
69e476dcd5 2019-05-02 6: #include <tcl.h>
38bed7cee0 2019-09-13 7:
d80c88cee0 2019-09-16 8: #ifdef XVFS_DEBUG
d80c88cee0 2019-09-16 9: #include <stdio.h> /* Needed for XVFS_DEBUG_PRINTF */
d80c88cee0 2019-09-16 10: static int xvfs_debug_depth = 0;
d80c88cee0 2019-09-16 11: #define XVFS_DEBUG_PRINTF(fmt, ...) fprintf(stderr, "[XVFS:DEBUG:%-30s:%4i] %s" fmt "\n", __func__, __LINE__, " " + (80 - (xvfs_debug_depth * 4)), __VA_ARGS__)
d80c88cee0 2019-09-16 12: #define XVFS_DEBUG_PUTS(str) XVFS_DEBUG_PRINTF("%s", str);
d80c88cee0 2019-09-16 13: #define XVFS_DEBUG_ENTER { xvfs_debug_depth++; XVFS_DEBUG_PUTS("Entered"); }
d80c88cee0 2019-09-16 14: #define XVFS_DEBUG_LEAVE { XVFS_DEBUG_PUTS("Returning"); xvfs_debug_depth--; }
d80c88cee0 2019-09-16 15: #else /* XVFS_DEBUG */
d80c88cee0 2019-09-16 16: #define XVFS_DEBUG_PRINTF(fmt, ...) /**/
d80c88cee0 2019-09-16 17: #define XVFS_DEBUG_PUTS(str) /**/
d80c88cee0 2019-09-16 18: #define XVFS_DEBUG_ENTER /**/
d80c88cee0 2019-09-16 19: #define XVFS_DEBUG_LEAVE /**/
d80c88cee0 2019-09-16 20: #endif /* XVFS_DEBUG */
d80c88cee0 2019-09-16 21:
d92ba3d36d 2019-05-08 22: #if defined(XVFS_MODE_FLEXIBLE) || defined(XVFS_MODE_SERVER)
d92ba3d36d 2019-05-08 23: #define XVFS_INTERNAL_SERVER_MAGIC "\xD4\xF3\x05\x96\x25\xCF\xAF\xFE"
d92ba3d36d 2019-05-08 24: #define XVFS_INTERNAL_SERVER_MAGIC_LEN 8
d92ba3d36d 2019-05-08 25:
d92ba3d36d 2019-05-08 26: struct xvfs_tclfs_server_info {
b586d5b0a1 2019-05-08 27: char magic[XVFS_INTERNAL_SERVER_MAGIC_LEN];
d92ba3d36d 2019-05-08 28: int (*registerProc)(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo);
d92ba3d36d 2019-05-08 29: };
d92ba3d36d 2019-05-08 30: #endif /* XVFS_MODE_FLEXIBLE || XVFS_MODE_SERVER */
3e44e1def1 2019-05-02 31:
3e44e1def1 2019-05-02 32: #if defined(XVFS_MODE_SERVER) || defined(XVFS_MODE_STANDALONE) || defined(XVFS_MODE_FLEXIBLE)
d121970301 2019-05-02 33: #define XVFS_ROOT_MOUNTPOINT "//xvfs:/"
d121970301 2019-05-02 34:
d121970301 2019-05-02 35: struct xvfs_tclfs_instance_info {
d121970301 2019-05-02 36: struct Xvfs_FSInfo *fsInfo;
d121970301 2019-05-02 37: Tcl_Obj *mountpoint;
d121970301 2019-05-02 38: };
d121970301 2019-05-02 39:
d121970301 2019-05-02 40: /*
d121970301 2019-05-02 41: * Internal Core Utilities
d121970301 2019-05-02 42: */
d80c88cee0 2019-09-16 43: static Tcl_Obj *xvfs_absolutePath(Tcl_Obj *path) {
5ae034e55e 2019-09-14 44: Tcl_Obj *currentDirectory;
d80c88cee0 2019-09-16 45: const char *pathStr;
5ae034e55e 2019-09-14 46:
d80c88cee0 2019-09-16 47: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 48:
d80c88cee0 2019-09-16 49: pathStr = Tcl_GetString(path);
d80c88cee0 2019-09-16 50:
5ae034e55e 2019-09-14 51: if (pathStr[0] != '/') {
5ae034e55e 2019-09-14 52: currentDirectory = Tcl_FSGetCwd(NULL);
5ae034e55e 2019-09-14 53: Tcl_IncrRefCount(currentDirectory);
5ae034e55e 2019-09-14 54:
5ae034e55e 2019-09-14 55: path = Tcl_ObjPrintf("%s/%s", Tcl_GetString(currentDirectory), pathStr);
5ae034e55e 2019-09-14 56: Tcl_IncrRefCount(path);
5ae034e55e 2019-09-14 57: Tcl_DecrRefCount(currentDirectory);
d80c88cee0 2019-09-16 58: } else {
d80c88cee0 2019-09-16 59: Tcl_IncrRefCount(path);
5ae034e55e 2019-09-14 60: }
d80c88cee0 2019-09-16 61:
d80c88cee0 2019-09-16 62: XVFS_DEBUG_PRINTF("Converted path \"%s\" to absolute path: \"%s\"", pathStr, Tcl_GetString(path));
d80c88cee0 2019-09-16 63:
d80c88cee0 2019-09-16 64: XVFS_DEBUG_LEAVE;
d80c88cee0 2019-09-16 65: return(path);
d80c88cee0 2019-09-16 66: }
d80c88cee0 2019-09-16 67:
d80c88cee0 2019-09-16 68: static const char *xvfs_relativePath(Tcl_Obj *path, struct xvfs_tclfs_instance_info *info) {
d80c88cee0 2019-09-16 69: const char *pathStr, *rootStr;
d80c88cee0 2019-09-16 70: const char *pathFinal;
d80c88cee0 2019-09-16 71: int pathLen, rootLen;
d80c88cee0 2019-09-16 72:
d80c88cee0 2019-09-16 73: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 74:
d80c88cee0 2019-09-16 75: rootStr = Tcl_GetStringFromObj(info->mountpoint, &rootLen);
d80c88cee0 2019-09-16 76: pathStr = Tcl_GetStringFromObj(path, &pathLen);
d80c88cee0 2019-09-16 77:
d80c88cee0 2019-09-16 78: XVFS_DEBUG_PRINTF("Finding relative path of \"%s\" from \"%s\" ...", pathStr, rootStr);
38bed7cee0 2019-09-13 79:
d121970301 2019-05-02 80: if (pathLen < rootLen) {
d80c88cee0 2019-09-16 81: XVFS_DEBUG_PUTS("... none possible (length)");
d80c88cee0 2019-09-16 82:
d80c88cee0 2019-09-16 83: XVFS_DEBUG_LEAVE;
d121970301 2019-05-02 84: return(NULL);
d121970301 2019-05-02 85: }
38bed7cee0 2019-09-13 86:
d121970301 2019-05-02 87: if (memcmp(pathStr, rootStr, rootLen) != 0) {
d80c88cee0 2019-09-16 88: XVFS_DEBUG_PUTS("... none possible (prefix differs)");
d80c88cee0 2019-09-16 89:
d80c88cee0 2019-09-16 90: XVFS_DEBUG_LEAVE;
d121970301 2019-05-02 91: return(NULL);
d121970301 2019-05-02 92: }
38bed7cee0 2019-09-13 93:
d121970301 2019-05-02 94: if (pathLen == rootLen) {
d80c88cee0 2019-09-16 95: XVFS_DEBUG_PUTS("... short circuit: \"\"");
d80c88cee0 2019-09-16 96:
d80c88cee0 2019-09-16 97: XVFS_DEBUG_LEAVE;
d121970301 2019-05-02 98: return("");
d121970301 2019-05-02 99: }
d121970301 2019-05-02 100:
d121970301 2019-05-02 101: /* XXX:TODO: Should this use the native OS path separator ? */
d121970301 2019-05-02 102: if (pathStr[rootLen] != '/') {
d80c88cee0 2019-09-16 103: XVFS_DEBUG_PUTS("... none possible (no seperator)");
d80c88cee0 2019-09-16 104:
d80c88cee0 2019-09-16 105: XVFS_DEBUG_LEAVE;
149aa89b7d 2019-09-13 106: return(NULL);
149aa89b7d 2019-09-13 107: }
38bed7cee0 2019-09-13 108:
5583d77f1c 2019-09-14 109: pathFinal = pathStr + rootLen + 1;
5583d77f1c 2019-09-14 110: pathLen -= rootLen + 1;
5583d77f1c 2019-09-14 111:
5583d77f1c 2019-09-14 112: if (pathLen == 1 && memcmp(pathFinal, ".", 1) == 0) {
d80c88cee0 2019-09-16 113: XVFS_DEBUG_PUTS("... short circuit: \".\" -> \"\"");
d80c88cee0 2019-09-16 114:
d80c88cee0 2019-09-16 115: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 116: return("");
5583d77f1c 2019-09-14 117: }
5583d77f1c 2019-09-14 118:
5583d77f1c 2019-09-14 119: while (pathLen >= 2 && memcmp(pathFinal, "./", 2) == 0) {
5583d77f1c 2019-09-14 120: pathFinal += 2;
5583d77f1c 2019-09-14 121: pathLen -= 2;
5583d77f1c 2019-09-14 122: }
5583d77f1c 2019-09-14 123:
d80c88cee0 2019-09-16 124: XVFS_DEBUG_PRINTF("... relative path: \"%s\"", pathFinal);
d80c88cee0 2019-09-16 125:
d80c88cee0 2019-09-16 126: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 127: return(pathFinal);
149aa89b7d 2019-09-13 128: }
149aa89b7d 2019-09-13 129:
149aa89b7d 2019-09-13 130: static const char *xvfs_perror(int xvfs_error) {
149aa89b7d 2019-09-13 131: if (xvfs_error >= 0) {
149aa89b7d 2019-09-13 132: return("Not an error");
149aa89b7d 2019-09-13 133: }
149aa89b7d 2019-09-13 134:
149aa89b7d 2019-09-13 135: switch (xvfs_error) {
149aa89b7d 2019-09-13 136: case XVFS_RV_ERR_ENOENT:
149aa89b7d 2019-09-13 137: return("No such file or directory");
149aa89b7d 2019-09-13 138: case XVFS_RV_ERR_EINVAL:
149aa89b7d 2019-09-13 139: return("Invalid argument");
149aa89b7d 2019-09-13 140: case XVFS_RV_ERR_EISDIR:
149aa89b7d 2019-09-13 141: return("Is a directory");
149aa89b7d 2019-09-13 142: case XVFS_RV_ERR_ENOTDIR:
149aa89b7d 2019-09-13 143: return("Not a directory");
149aa89b7d 2019-09-13 144: case XVFS_RV_ERR_EFAULT:
149aa89b7d 2019-09-13 145: return("Bad address");
5583d77f1c 2019-09-14 146: case XVFS_RV_ERR_INTERNAL:
5583d77f1c 2019-09-14 147: return("Internal error");
149aa89b7d 2019-09-13 148: default:
149aa89b7d 2019-09-13 149: return("Unknown error");
149aa89b7d 2019-09-13 150: }
38bed7cee0 2019-09-13 151: }
38bed7cee0 2019-09-13 152:
38bed7cee0 2019-09-13 153: static int xvfs_errorToErrno(int xvfs_error) {
38bed7cee0 2019-09-13 154: if (xvfs_error >= 0) {
38bed7cee0 2019-09-13 155: return(0);
38bed7cee0 2019-09-13 156: }
38bed7cee0 2019-09-13 157:
38bed7cee0 2019-09-13 158: switch (xvfs_error) {
38bed7cee0 2019-09-13 159: case XVFS_RV_ERR_ENOENT:
38bed7cee0 2019-09-13 160: return(ENOENT);
38bed7cee0 2019-09-13 161: case XVFS_RV_ERR_EINVAL:
38bed7cee0 2019-09-13 162: return(EINVAL);
38bed7cee0 2019-09-13 163: case XVFS_RV_ERR_EISDIR:
38bed7cee0 2019-09-13 164: return(EISDIR);
38bed7cee0 2019-09-13 165: case XVFS_RV_ERR_ENOTDIR:
38bed7cee0 2019-09-13 166: return(ENOTDIR);
38bed7cee0 2019-09-13 167: case XVFS_RV_ERR_EFAULT:
38bed7cee0 2019-09-13 168: return(EFAULT);
5583d77f1c 2019-09-14 169: case XVFS_RV_ERR_INTERNAL:
5583d77f1c 2019-09-14 170: return(EINVAL);
38bed7cee0 2019-09-13 171: default:
38bed7cee0 2019-09-13 172: return(ERANGE);
38bed7cee0 2019-09-13 173: }
38bed7cee0 2019-09-13 174: }
38bed7cee0 2019-09-13 175:
38bed7cee0 2019-09-13 176: /*
38bed7cee0 2019-09-13 177: * Xvfs Memory Channel
38bed7cee0 2019-09-13 178: */
38bed7cee0 2019-09-13 179: struct xvfs_tclfs_channel_id {
38bed7cee0 2019-09-13 180: Tcl_Channel channel;
38bed7cee0 2019-09-13 181: struct xvfs_tclfs_instance_info *fsInstanceInfo;
38bed7cee0 2019-09-13 182: Tcl_Obj *path;
38bed7cee0 2019-09-13 183: Tcl_WideInt currentOffset;
38bed7cee0 2019-09-13 184: Tcl_WideInt fileSize;
7d74392642 2019-09-13 185: int eofMarked;
aa08a4a749 2019-09-14 186: int queuedEvents;
aa08a4a749 2019-09-14 187: int closed;
7d74392642 2019-09-13 188: };
7d74392642 2019-09-13 189: struct xvfs_tclfs_channel_event {
7d74392642 2019-09-13 190: Tcl_Event tcl;
7d74392642 2019-09-13 191: struct xvfs_tclfs_channel_id *channelInstanceData;
38bed7cee0 2019-09-13 192: };
38bed7cee0 2019-09-13 193: static Tcl_ChannelType xvfs_tclfs_channelType;
38bed7cee0 2019-09-13 194:
38bed7cee0 2019-09-13 195: static Tcl_Channel xvfs_tclfs_openChannel(Tcl_Obj *path, struct xvfs_tclfs_instance_info *instanceInfo) {
38bed7cee0 2019-09-13 196: struct xvfs_tclfs_channel_id *channelInstanceData;
38bed7cee0 2019-09-13 197: Tcl_Channel channel;
38bed7cee0 2019-09-13 198: Tcl_StatBuf fileInfo;
7d74392642 2019-09-13 199: Tcl_Obj *channelName;
38bed7cee0 2019-09-13 200: int statRet;
7d74392642 2019-09-13 201:
d80c88cee0 2019-09-16 202: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 203: XVFS_DEBUG_PRINTF("Opening file \"%s\" ...", Tcl_GetString(path));
d80c88cee0 2019-09-16 204:
38bed7cee0 2019-09-13 205: statRet = instanceInfo->fsInfo->getStatProc(Tcl_GetString(path), &fileInfo);
38bed7cee0 2019-09-13 206: if (statRet < 0) {
d80c88cee0 2019-09-16 207: XVFS_DEBUG_PRINTF("... failed: %s", xvfs_perror(statRet));
d80c88cee0 2019-09-16 208:
d80c88cee0 2019-09-16 209: XVFS_DEBUG_LEAVE;
38bed7cee0 2019-09-13 210: return(NULL);
38bed7cee0 2019-09-13 211: }
38bed7cee0 2019-09-13 212:
38bed7cee0 2019-09-13 213: channelInstanceData = (struct xvfs_tclfs_channel_id *) Tcl_Alloc(sizeof(*channelInstanceData));
38bed7cee0 2019-09-13 214: channelInstanceData->currentOffset = 0;
7d74392642 2019-09-13 215: channelInstanceData->eofMarked = 0;
aa08a4a749 2019-09-14 216: channelInstanceData->queuedEvents = 0;
aa08a4a749 2019-09-14 217: channelInstanceData->closed = 0;
38bed7cee0 2019-09-13 218: channelInstanceData->channel = NULL;
38bed7cee0 2019-09-13 219:
7d74392642 2019-09-13 220: channelName = Tcl_ObjPrintf("xvfs0x%llx", (unsigned long long) channelInstanceData);
7d74392642 2019-09-13 221: if (!channelName) {
d80c88cee0 2019-09-16 222: XVFS_DEBUG_PUTS("... failed");
d80c88cee0 2019-09-16 223:
7d74392642 2019-09-13 224: Tcl_Free((char *) channelInstanceData);
7d74392642 2019-09-13 225:
d80c88cee0 2019-09-16 226: XVFS_DEBUG_LEAVE;
7d74392642 2019-09-13 227: return(NULL);
7d74392642 2019-09-13 228: }
7d74392642 2019-09-13 229: Tcl_IncrRefCount(channelName);
7d74392642 2019-09-13 230:
38bed7cee0 2019-09-13 231: channelInstanceData->fsInstanceInfo = instanceInfo;
38bed7cee0 2019-09-13 232: channelInstanceData->fileSize = fileInfo.st_size;
7d74392642 2019-09-13 233: channelInstanceData->path = path;
38bed7cee0 2019-09-13 234: Tcl_IncrRefCount(path);
38bed7cee0 2019-09-13 235:
7d74392642 2019-09-13 236: channel = Tcl_CreateChannel(&xvfs_tclfs_channelType, Tcl_GetString(channelName), channelInstanceData, TCL_READABLE);
7d74392642 2019-09-13 237: Tcl_DecrRefCount(channelName);
38bed7cee0 2019-09-13 238: if (!channel) {
d80c88cee0 2019-09-16 239: XVFS_DEBUG_PUTS("... failed");
d80c88cee0 2019-09-16 240:
38bed7cee0 2019-09-13 241: Tcl_DecrRefCount(path);
38bed7cee0 2019-09-13 242: Tcl_Free((char *) channelInstanceData);
38bed7cee0 2019-09-13 243:
d80c88cee0 2019-09-16 244: XVFS_DEBUG_LEAVE;
38bed7cee0 2019-09-13 245: return(NULL);
38bed7cee0 2019-09-13 246: }
38bed7cee0 2019-09-13 247:
38bed7cee0 2019-09-13 248: channelInstanceData->channel = channel;
38bed7cee0 2019-09-13 249:
d80c88cee0 2019-09-16 250: XVFS_DEBUG_PRINTF("... ok (%p)", channelInstanceData);
d80c88cee0 2019-09-16 251:
d80c88cee0 2019-09-16 252: XVFS_DEBUG_LEAVE;
38bed7cee0 2019-09-13 253: return(channel);
aa08a4a749 2019-09-14 254: }
aa08a4a749 2019-09-14 255:
aa08a4a749 2019-09-14 256: static int xvfs_tclfs_closeChannel(ClientData channelInstanceData_p, Tcl_Interp *interp);
aa08a4a749 2019-09-14 257: static int xvfs_tclfs_closeChannelEvent(Tcl_Event *event_p, int flags) {
aa08a4a749 2019-09-14 258: struct xvfs_tclfs_channel_id *channelInstanceData;
aa08a4a749 2019-09-14 259: struct xvfs_tclfs_channel_event *event;
aa08a4a749 2019-09-14 260:
aa08a4a749 2019-09-14 261: event = (struct xvfs_tclfs_channel_event *) event_p;
aa08a4a749 2019-09-14 262: channelInstanceData = event->channelInstanceData;
aa08a4a749 2019-09-14 263:
aa08a4a749 2019-09-14 264: channelInstanceData->queuedEvents--;
aa08a4a749 2019-09-14 265:
aa08a4a749 2019-09-14 266: xvfs_tclfs_closeChannel((ClientData) channelInstanceData, NULL);
aa08a4a749 2019-09-14 267:
aa08a4a749 2019-09-14 268: return(1);
38bed7cee0 2019-09-13 269: }
38bed7cee0 2019-09-13 270:
38bed7cee0 2019-09-13 271: static int xvfs_tclfs_closeChannel(ClientData channelInstanceData_p, Tcl_Interp *interp) {
38bed7cee0 2019-09-13 272: struct xvfs_tclfs_channel_id *channelInstanceData;
aa08a4a749 2019-09-14 273: struct xvfs_tclfs_channel_event *event;
aa08a4a749 2019-09-14 274:
d80c88cee0 2019-09-16 275: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 276: XVFS_DEBUG_PRINTF("Closing channel %p ...", channelInstanceData_p);
d80c88cee0 2019-09-16 277:
38bed7cee0 2019-09-13 278: channelInstanceData = (struct xvfs_tclfs_channel_id *) channelInstanceData_p;
aa08a4a749 2019-09-14 279:
aa08a4a749 2019-09-14 280: channelInstanceData->closed = 1;
aa08a4a749 2019-09-14 281:
aa08a4a749 2019-09-14 282: if (channelInstanceData->queuedEvents != 0) {
d80c88cee0 2019-09-16 283: XVFS_DEBUG_PUTS("... queued");
d80c88cee0 2019-09-16 284:
aa08a4a749 2019-09-14 285: event = (struct xvfs_tclfs_channel_event *) Tcl_Alloc(sizeof(*event));
aa08a4a749 2019-09-14 286: event->tcl.proc = xvfs_tclfs_closeChannelEvent;
aa08a4a749 2019-09-14 287: event->tcl.nextPtr = NULL;
aa08a4a749 2019-09-14 288: event->channelInstanceData = channelInstanceData;
aa08a4a749 2019-09-14 289:
aa08a4a749 2019-09-14 290: channelInstanceData->queuedEvents++;
aa08a4a749 2019-09-14 291:
aa08a4a749 2019-09-14 292: Tcl_QueueEvent((Tcl_Event *) event, TCL_QUEUE_TAIL);
aa08a4a749 2019-09-14 293:
d80c88cee0 2019-09-16 294: XVFS_DEBUG_LEAVE;
aa08a4a749 2019-09-14 295: return(0);
aa08a4a749 2019-09-14 296: }
38bed7cee0 2019-09-13 297:
38bed7cee0 2019-09-13 298: Tcl_DecrRefCount(channelInstanceData->path);
38bed7cee0 2019-09-13 299: Tcl_Free((char *) channelInstanceData);
38bed7cee0 2019-09-13 300:
d80c88cee0 2019-09-16 301: XVFS_DEBUG_PUTS("... ok");
d80c88cee0 2019-09-16 302:
d80c88cee0 2019-09-16 303: XVFS_DEBUG_LEAVE;
38bed7cee0 2019-09-13 304: return(0);
38bed7cee0 2019-09-13 305: }
38bed7cee0 2019-09-13 306:
38bed7cee0 2019-09-13 307: static int xvfs_tclfs_readChannel(ClientData channelInstanceData_p, char *buf, int bufSize, int *errorCodePtr) {
38bed7cee0 2019-09-13 308: struct xvfs_tclfs_channel_id *channelInstanceData;
38bed7cee0 2019-09-13 309: const unsigned char *data;
38bed7cee0 2019-09-13 310: Tcl_WideInt offset, length;
38bed7cee0 2019-09-13 311: char *path;
38bed7cee0 2019-09-13 312:
38bed7cee0 2019-09-13 313: channelInstanceData = (struct xvfs_tclfs_channel_id *) channelInstanceData_p;
7d74392642 2019-09-13 314:
7d74392642 2019-09-13 315: /*
7d74392642 2019-09-13 316: * If we are already at the end of the file we can skip
7d74392642 2019-09-13 317: * attempting to read it
7d74392642 2019-09-13 318: */
7d74392642 2019-09-13 319: if (channelInstanceData->eofMarked) {
7d74392642 2019-09-13 320: return(0);
7d74392642 2019-09-13 321: }
38bed7cee0 2019-09-13 322:
38bed7cee0 2019-09-13 323: path = Tcl_GetString(channelInstanceData->path);
38bed7cee0 2019-09-13 324: offset = channelInstanceData->currentOffset;
38bed7cee0 2019-09-13 325: length = bufSize;
38bed7cee0 2019-09-13 326:
38bed7cee0 2019-09-13 327: data = channelInstanceData->fsInstanceInfo->fsInfo->getDataProc(path, offset, &length);
38bed7cee0 2019-09-13 328:
38bed7cee0 2019-09-13 329: if (length < 0) {
38bed7cee0 2019-09-13 330: *errorCodePtr = xvfs_errorToErrno(length);
38bed7cee0 2019-09-13 331:
38bed7cee0 2019-09-13 332: return(-1);
38bed7cee0 2019-09-13 333: }
38bed7cee0 2019-09-13 334:
7d74392642 2019-09-13 335: if (length == 0) {
7d74392642 2019-09-13 336: channelInstanceData->eofMarked = 1;
7d74392642 2019-09-13 337: } else {
7d74392642 2019-09-13 338: memcpy(buf, data, length);
38bed7cee0 2019-09-13 339:
7d74392642 2019-09-13 340: channelInstanceData->currentOffset += length;
7d74392642 2019-09-13 341: }
38bed7cee0 2019-09-13 342:
38bed7cee0 2019-09-13 343: return(length);
38bed7cee0 2019-09-13 344: }
38bed7cee0 2019-09-13 345:
7d74392642 2019-09-13 346: static int xvfs_tclfs_watchChannelEvent(Tcl_Event *event_p, int flags) {
7d74392642 2019-09-13 347: struct xvfs_tclfs_channel_id *channelInstanceData;
7d74392642 2019-09-13 348: struct xvfs_tclfs_channel_event *event;
7d74392642 2019-09-13 349:
7d74392642 2019-09-13 350: event = (struct xvfs_tclfs_channel_event *) event_p;
7d74392642 2019-09-13 351: channelInstanceData = event->channelInstanceData;
7d74392642 2019-09-13 352:
aa08a4a749 2019-09-14 353: channelInstanceData->queuedEvents--;
aa08a4a749 2019-09-14 354:
aa08a4a749 2019-09-14 355: if (channelInstanceData->closed) {
aa08a4a749 2019-09-14 356: return(1);
aa08a4a749 2019-09-14 357: }
aa08a4a749 2019-09-14 358:
7d74392642 2019-09-13 359: Tcl_NotifyChannel(channelInstanceData->channel, TCL_READABLE);
7d74392642 2019-09-13 360:
aa08a4a749 2019-09-14 361: return(1);
7d74392642 2019-09-13 362: }
7d74392642 2019-09-13 363:
38bed7cee0 2019-09-13 364: static void xvfs_tclfs_watchChannel(ClientData channelInstanceData_p, int mask) {
7d74392642 2019-09-13 365: struct xvfs_tclfs_channel_id *channelInstanceData;
7d74392642 2019-09-13 366: struct xvfs_tclfs_channel_event *event;
7d74392642 2019-09-13 367:
38bed7cee0 2019-09-13 368: if ((mask & TCL_READABLE) != TCL_READABLE) {
38bed7cee0 2019-09-13 369: return;
38bed7cee0 2019-09-13 370: }
38bed7cee0 2019-09-13 371:
7d74392642 2019-09-13 372: channelInstanceData = (struct xvfs_tclfs_channel_id *) channelInstanceData_p;
7d74392642 2019-09-13 373:
7d74392642 2019-09-13 374: /*
7d74392642 2019-09-13 375: * If the read call has marked that we have reached EOF,
7d74392642 2019-09-13 376: * do not signal any further
7d74392642 2019-09-13 377: */
7d74392642 2019-09-13 378: if (channelInstanceData->eofMarked) {
7d74392642 2019-09-13 379: return;
7d74392642 2019-09-13 380: }
7d74392642 2019-09-13 381:
7d74392642 2019-09-13 382: event = (struct xvfs_tclfs_channel_event *) Tcl_Alloc(sizeof(*event));
7d74392642 2019-09-13 383: event->tcl.proc = xvfs_tclfs_watchChannelEvent;
7d74392642 2019-09-13 384: event->tcl.nextPtr = NULL;
7d74392642 2019-09-13 385: event->channelInstanceData = channelInstanceData;
aa08a4a749 2019-09-14 386:
aa08a4a749 2019-09-14 387: channelInstanceData->queuedEvents++;
7d74392642 2019-09-13 388:
7d74392642 2019-09-13 389: Tcl_QueueEvent((Tcl_Event *) event, TCL_QUEUE_TAIL);
7d74392642 2019-09-13 390:
38bed7cee0 2019-09-13 391: return;
38bed7cee0 2019-09-13 392: }
38bed7cee0 2019-09-13 393:
38bed7cee0 2019-09-13 394: static int xvfs_tclfs_seekChannel(ClientData channelInstanceData_p, long offset, int mode, int *errorCodePtr) {
38bed7cee0 2019-09-13 395: struct xvfs_tclfs_channel_id *channelInstanceData;
38bed7cee0 2019-09-13 396: Tcl_WideInt newOffset, fileSize;
38bed7cee0 2019-09-13 397:
38bed7cee0 2019-09-13 398: channelInstanceData = (struct xvfs_tclfs_channel_id *) channelInstanceData_p;
38bed7cee0 2019-09-13 399:
38bed7cee0 2019-09-13 400: newOffset = channelInstanceData->currentOffset;
38bed7cee0 2019-09-13 401: fileSize = channelInstanceData->fileSize;
38bed7cee0 2019-09-13 402:
38bed7cee0 2019-09-13 403: switch (mode) {
38bed7cee0 2019-09-13 404: case SEEK_CUR:
38bed7cee0 2019-09-13 405: newOffset += offset;
38bed7cee0 2019-09-13 406: break;
38bed7cee0 2019-09-13 407: case SEEK_SET:
38bed7cee0 2019-09-13 408: newOffset = offset;
38bed7cee0 2019-09-13 409: break;
38bed7cee0 2019-09-13 410: case SEEK_END:
38bed7cee0 2019-09-13 411: newOffset = fileSize + offset;
38bed7cee0 2019-09-13 412: break;
38bed7cee0 2019-09-13 413: default:
38bed7cee0 2019-09-13 414: *errorCodePtr = xvfs_errorToErrno(XVFS_RV_ERR_EINVAL);
38bed7cee0 2019-09-13 415:
38bed7cee0 2019-09-13 416: return(-1);
38bed7cee0 2019-09-13 417: }
38bed7cee0 2019-09-13 418:
38bed7cee0 2019-09-13 419: /*
38bed7cee0 2019-09-13 420: * We allow users to seek right up to the end of the buffer, but
38bed7cee0 2019-09-13 421: * no further, this way if they want to seek backwards from there
38bed7cee0 2019-09-13 422: * it is possible to do so.
38bed7cee0 2019-09-13 423: */
38bed7cee0 2019-09-13 424: if (newOffset < 0 || newOffset > fileSize) {
38bed7cee0 2019-09-13 425: *errorCodePtr = xvfs_errorToErrno(XVFS_RV_ERR_EINVAL);
38bed7cee0 2019-09-13 426:
38bed7cee0 2019-09-13 427: return(-1);
38bed7cee0 2019-09-13 428: }
38bed7cee0 2019-09-13 429:
7d74392642 2019-09-13 430: if (newOffset != channelInstanceData->currentOffset) {
7d74392642 2019-09-13 431: channelInstanceData->eofMarked = 0;
7d74392642 2019-09-13 432: channelInstanceData->currentOffset = newOffset;
7d74392642 2019-09-13 433: }
38bed7cee0 2019-09-13 434:
38bed7cee0 2019-09-13 435: return(channelInstanceData->currentOffset);
38bed7cee0 2019-09-13 436: }
38bed7cee0 2019-09-13 437:
38bed7cee0 2019-09-13 438: static void xvfs_tclfs_prepareChannelType(void) {
38bed7cee0 2019-09-13 439: xvfs_tclfs_channelType.typeName = "xvfs";
38bed7cee0 2019-09-13 440: xvfs_tclfs_channelType.version = TCL_CHANNEL_VERSION_2;
38bed7cee0 2019-09-13 441: xvfs_tclfs_channelType.closeProc = xvfs_tclfs_closeChannel;
38bed7cee0 2019-09-13 442: xvfs_tclfs_channelType.inputProc = xvfs_tclfs_readChannel;
38bed7cee0 2019-09-13 443: xvfs_tclfs_channelType.outputProc = NULL;
38bed7cee0 2019-09-13 444: xvfs_tclfs_channelType.watchProc = xvfs_tclfs_watchChannel;
38bed7cee0 2019-09-13 445: xvfs_tclfs_channelType.getHandleProc = NULL;
38bed7cee0 2019-09-13 446: xvfs_tclfs_channelType.seekProc = xvfs_tclfs_seekChannel;
38bed7cee0 2019-09-13 447: xvfs_tclfs_channelType.setOptionProc = NULL;
38bed7cee0 2019-09-13 448: xvfs_tclfs_channelType.getOptionProc = NULL;
38bed7cee0 2019-09-13 449: xvfs_tclfs_channelType.close2Proc = NULL;
38bed7cee0 2019-09-13 450: xvfs_tclfs_channelType.blockModeProc = NULL;
38bed7cee0 2019-09-13 451: xvfs_tclfs_channelType.flushProc = NULL;
38bed7cee0 2019-09-13 452: xvfs_tclfs_channelType.handlerProc = NULL;
38bed7cee0 2019-09-13 453: xvfs_tclfs_channelType.wideSeekProc = NULL;
38bed7cee0 2019-09-13 454: xvfs_tclfs_channelType.threadActionProc = NULL;
38bed7cee0 2019-09-13 455: xvfs_tclfs_channelType.truncateProc = NULL;
d121970301 2019-05-02 456: }
d121970301 2019-05-02 457:
d121970301 2019-05-02 458: /*
d121970301 2019-05-02 459: * Internal Tcl_Filesystem functions, with the appropriate instance info
d121970301 2019-05-02 460: */
d121970301 2019-05-02 461: static int xvfs_tclfs_pathInFilesystem(Tcl_Obj *path, ClientData *dataPtr, struct xvfs_tclfs_instance_info *instanceInfo) {
d121970301 2019-05-02 462: const char *relativePath;
d80c88cee0 2019-09-16 463: int retval;
d80c88cee0 2019-09-16 464:
d80c88cee0 2019-09-16 465: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 466:
d80c88cee0 2019-09-16 467: XVFS_DEBUG_PRINTF("Checking to see if path \"%s\" is in the filesystem ...", Tcl_GetString(path));
d80c88cee0 2019-09-16 468:
d80c88cee0 2019-09-16 469: path = xvfs_absolutePath(path);
38bed7cee0 2019-09-13 470:
d121970301 2019-05-02 471: relativePath = xvfs_relativePath(path, instanceInfo);
d80c88cee0 2019-09-16 472:
d80c88cee0 2019-09-16 473: retval = TCL_OK;
d121970301 2019-05-02 474: if (!relativePath) {
d80c88cee0 2019-09-16 475: retval = -1;
d121970301 2019-05-02 476: }
38bed7cee0 2019-09-13 477:
d80c88cee0 2019-09-16 478: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 479:
d80c88cee0 2019-09-16 480: XVFS_DEBUG_PRINTF("... %s", retval == -1 ? "no" : "yes");
d80c88cee0 2019-09-16 481:
d80c88cee0 2019-09-16 482: XVFS_DEBUG_LEAVE;
d80c88cee0 2019-09-16 483: return(retval);
d121970301 2019-05-02 484: }
d121970301 2019-05-02 485:
d121970301 2019-05-02 486: static int xvfs_tclfs_stat(Tcl_Obj *path, Tcl_StatBuf *statBuf, struct xvfs_tclfs_instance_info *instanceInfo) {
d121970301 2019-05-02 487: const char *pathStr;
d121970301 2019-05-02 488: int retval;
d121970301 2019-05-02 489:
d80c88cee0 2019-09-16 490: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 491:
d80c88cee0 2019-09-16 492: XVFS_DEBUG_PRINTF("Getting stat() on \"%s\" ...", Tcl_GetString(path));
d80c88cee0 2019-09-16 493:
d80c88cee0 2019-09-16 494: path = xvfs_absolutePath(path);
d80c88cee0 2019-09-16 495:
d121970301 2019-05-02 496: pathStr = xvfs_relativePath(path, instanceInfo);
38bed7cee0 2019-09-13 497:
daf25f5222 2019-05-03 498: retval = instanceInfo->fsInfo->getStatProc(pathStr, statBuf);
149aa89b7d 2019-09-13 499: if (retval < 0) {
d80c88cee0 2019-09-16 500: XVFS_DEBUG_PRINTF("... failed: %s", xvfs_perror(retval));
149aa89b7d 2019-09-13 501: retval = -1;
d80c88cee0 2019-09-16 502: } else {
d80c88cee0 2019-09-16 503: XVFS_DEBUG_PUTS("... ok");
149aa89b7d 2019-09-13 504: }
38bed7cee0 2019-09-13 505:
d80c88cee0 2019-09-16 506: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 507:
d80c88cee0 2019-09-16 508: XVFS_DEBUG_LEAVE;
d121970301 2019-05-02 509: return(retval);
d121970301 2019-05-02 510: }
d121970301 2019-05-02 511:
12ff77016f 2019-09-14 512: static int xvfs_tclfs_access(Tcl_Obj *path, int mode, struct xvfs_tclfs_instance_info *instanceInfo) {
12ff77016f 2019-09-14 513: const char *pathStr;
12ff77016f 2019-09-14 514: Tcl_StatBuf fileInfo;
12ff77016f 2019-09-14 515: int statRetVal;
12ff77016f 2019-09-14 516:
d80c88cee0 2019-09-16 517: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 518:
d80c88cee0 2019-09-16 519: XVFS_DEBUG_PRINTF("Getting access(..., %i) on \"%s\" ...", mode, Tcl_GetString(path));
12ff77016f 2019-09-14 520:
12ff77016f 2019-09-14 521: if (mode & W_OK) {
d80c88cee0 2019-09-16 522: XVFS_DEBUG_PUTS("... no (not writable)");
d80c88cee0 2019-09-16 523:
d80c88cee0 2019-09-16 524: XVFS_DEBUG_LEAVE;
d80c88cee0 2019-09-16 525: return(-1);
d80c88cee0 2019-09-16 526: }
d80c88cee0 2019-09-16 527:
d80c88cee0 2019-09-16 528: path = xvfs_absolutePath(path);
d80c88cee0 2019-09-16 529:
d80c88cee0 2019-09-16 530: pathStr = xvfs_relativePath(path, instanceInfo);
d80c88cee0 2019-09-16 531: if (!pathStr) {
d80c88cee0 2019-09-16 532: XVFS_DEBUG_PUTS("... no (not in our path)");
d80c88cee0 2019-09-16 533:
d80c88cee0 2019-09-16 534: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 535:
d80c88cee0 2019-09-16 536: XVFS_DEBUG_LEAVE;
12ff77016f 2019-09-14 537: return(-1);
12ff77016f 2019-09-14 538: }
12ff77016f 2019-09-14 539:
12ff77016f 2019-09-14 540: statRetVal = instanceInfo->fsInfo->getStatProc(pathStr, &fileInfo);
12ff77016f 2019-09-14 541: if (statRetVal < 0) {
d80c88cee0 2019-09-16 542: XVFS_DEBUG_PUTS("... no (not statable)");
d80c88cee0 2019-09-16 543:
d80c88cee0 2019-09-16 544: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 545:
d80c88cee0 2019-09-16 546: XVFS_DEBUG_LEAVE;
12ff77016f 2019-09-14 547: return(-1);
12ff77016f 2019-09-14 548: }
12ff77016f 2019-09-14 549:
12ff77016f 2019-09-14 550: if (mode & X_OK) {
12ff77016f 2019-09-14 551: if (!(fileInfo.st_mode & 040000)) {
d80c88cee0 2019-09-16 552: XVFS_DEBUG_PUTS("... no (not a directory and X_OK specified)");
d80c88cee0 2019-09-16 553:
d80c88cee0 2019-09-16 554: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 555:
d80c88cee0 2019-09-16 556: XVFS_DEBUG_LEAVE;
12ff77016f 2019-09-14 557: return(-1);
12ff77016f 2019-09-14 558: }
12ff77016f 2019-09-14 559: }
12ff77016f 2019-09-14 560:
d80c88cee0 2019-09-16 561: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 562:
d80c88cee0 2019-09-16 563: XVFS_DEBUG_PUTS("... ok");
d80c88cee0 2019-09-16 564:
d80c88cee0 2019-09-16 565: XVFS_DEBUG_LEAVE;
12ff77016f 2019-09-14 566: return(0);
d121970301 2019-05-02 567: }
d121970301 2019-05-02 568:
d121970301 2019-05-02 569: static Tcl_Channel xvfs_tclfs_openFileChannel(Tcl_Interp *interp, Tcl_Obj *path, int mode, int permissions, struct xvfs_tclfs_instance_info *instanceInfo) {
d80c88cee0 2019-09-16 570: Tcl_Channel retval;
d80c88cee0 2019-09-16 571: Tcl_Obj *pathRel;
38bed7cee0 2019-09-13 572: const char *pathStr;
38bed7cee0 2019-09-13 573:
d80c88cee0 2019-09-16 574: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 575:
d80c88cee0 2019-09-16 576: XVFS_DEBUG_PRINTF("Asked to open(\"%s\", %x)...", Tcl_GetString(path), mode);
38bed7cee0 2019-09-13 577:
38bed7cee0 2019-09-13 578: if (mode & O_WRONLY) {
d80c88cee0 2019-09-16 579: XVFS_DEBUG_PUTS("... failed (asked to open for writing");
d80c88cee0 2019-09-16 580:
d80c88cee0 2019-09-16 581: XVFS_DEBUG_LEAVE;
38bed7cee0 2019-09-13 582: return(NULL);
38bed7cee0 2019-09-13 583: }
38bed7cee0 2019-09-13 584:
d80c88cee0 2019-09-16 585: path = xvfs_absolutePath(path);
d80c88cee0 2019-09-16 586:
d80c88cee0 2019-09-16 587: pathStr = xvfs_relativePath(path, instanceInfo);
d80c88cee0 2019-09-16 588:
d80c88cee0 2019-09-16 589: pathRel = Tcl_NewStringObj(pathStr, -1);
d80c88cee0 2019-09-16 590:
d80c88cee0 2019-09-16 591: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 592:
d80c88cee0 2019-09-16 593: XVFS_DEBUG_PUTS("... done, passing off to channel handler");
d80c88cee0 2019-09-16 594:
d80c88cee0 2019-09-16 595: retval = xvfs_tclfs_openChannel(pathRel, instanceInfo);
d80c88cee0 2019-09-16 596:
d80c88cee0 2019-09-16 597: XVFS_DEBUG_LEAVE;
d80c88cee0 2019-09-16 598: return(retval);
5583d77f1c 2019-09-14 599: }
5583d77f1c 2019-09-14 600:
5583d77f1c 2019-09-14 601: static int xvfs_tclfs_verifyType(Tcl_Obj *path, Tcl_GlobTypeData *types, struct xvfs_tclfs_instance_info *instanceInfo) {
5583d77f1c 2019-09-14 602: const char *pathStr;
5583d77f1c 2019-09-14 603: Tcl_StatBuf fileInfo;
5583d77f1c 2019-09-14 604: int statRetVal;
5583d77f1c 2019-09-14 605:
d80c88cee0 2019-09-16 606: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 607:
d80c88cee0 2019-09-16 608: if (types) {
d80c88cee0 2019-09-16 609: XVFS_DEBUG_PRINTF("Asked to verify the existence and type of \"%s\" matches type=%i and perm=%i ...", Tcl_GetString(path), types->type, types->perm);
d80c88cee0 2019-09-16 610: } else {
d80c88cee0 2019-09-16 611: XVFS_DEBUG_PRINTF("Asked to verify the existence \"%s\" ...", Tcl_GetString(path));
d80c88cee0 2019-09-16 612: }
d80c88cee0 2019-09-16 613:
5583d77f1c 2019-09-14 614: statRetVal = xvfs_tclfs_stat(path, &fileInfo, instanceInfo);
5583d77f1c 2019-09-14 615: if (statRetVal != 0) {
d80c88cee0 2019-09-16 616: XVFS_DEBUG_PUTS("... no (cannot stat)");
d80c88cee0 2019-09-16 617:
d80c88cee0 2019-09-16 618: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 619: return(0);
5583d77f1c 2019-09-14 620: }
5583d77f1c 2019-09-14 621:
5583d77f1c 2019-09-14 622: if (!types) {
d80c88cee0 2019-09-16 623: XVFS_DEBUG_PUTS("... yes");
d80c88cee0 2019-09-16 624:
d80c88cee0 2019-09-16 625: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 626: return(1);
5583d77f1c 2019-09-14 627: }
5583d77f1c 2019-09-14 628:
5583d77f1c 2019-09-14 629: if (types->perm != TCL_GLOB_PERM_RONLY) {
12ff77016f 2019-09-14 630: if (types->perm & (TCL_GLOB_PERM_W | TCL_GLOB_PERM_HIDDEN)) {
d80c88cee0 2019-09-16 631: XVFS_DEBUG_PUTS("... no (checked for writable or hidden, not supported)");
d80c88cee0 2019-09-16 632:
d80c88cee0 2019-09-16 633: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 634: return(0);
12ff77016f 2019-09-14 635: }
12ff77016f 2019-09-14 636:
12ff77016f 2019-09-14 637: if ((types->perm & TCL_GLOB_PERM_X) == TCL_GLOB_PERM_X) {
12ff77016f 2019-09-14 638: if (!(fileInfo.st_mode & 040000)) {
d80c88cee0 2019-09-16 639: XVFS_DEBUG_PUTS("... no (checked for executable but not a directory)");
d80c88cee0 2019-09-16 640:
d80c88cee0 2019-09-16 641: XVFS_DEBUG_LEAVE;
12ff77016f 2019-09-14 642: return(0);
12ff77016f 2019-09-14 643: }
5583d77f1c 2019-09-14 644: }
5583d77f1c 2019-09-14 645: }
5583d77f1c 2019-09-14 646:
5583d77f1c 2019-09-14 647: if (types->type & (TCL_GLOB_TYPE_BLOCK | TCL_GLOB_TYPE_CHAR | TCL_GLOB_TYPE_PIPE | TCL_GLOB_TYPE_SOCK | TCL_GLOB_TYPE_LINK)) {
d80c88cee0 2019-09-16 648: XVFS_DEBUG_PUTS("... no (checked for block, char, pipe, sock, or link, not supported)");
d80c88cee0 2019-09-16 649:
d80c88cee0 2019-09-16 650: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 651: return(0);
5583d77f1c 2019-09-14 652: }
5583d77f1c 2019-09-14 653:
5583d77f1c 2019-09-14 654: if ((types->type & TCL_GLOB_TYPE_DIR) == TCL_GLOB_TYPE_DIR) {
5583d77f1c 2019-09-14 655: if (!(fileInfo.st_mode & 040000)) {
d80c88cee0 2019-09-16 656: XVFS_DEBUG_PUTS("... no (checked for directory but not a directory)");
d80c88cee0 2019-09-16 657:
d80c88cee0 2019-09-16 658: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 659: return(0);
5583d77f1c 2019-09-14 660: }
5583d77f1c 2019-09-14 661: }
5583d77f1c 2019-09-14 662:
5583d77f1c 2019-09-14 663: if ((types->type & TCL_GLOB_TYPE_FILE) == TCL_GLOB_TYPE_FILE) {
5583d77f1c 2019-09-14 664: if (!(fileInfo.st_mode & 0100000)) {
d80c88cee0 2019-09-16 665: XVFS_DEBUG_PUTS("... no (checked for file but not a file)");
d80c88cee0 2019-09-16 666:
d80c88cee0 2019-09-16 667: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 668: return(0);
5583d77f1c 2019-09-14 669: }
5583d77f1c 2019-09-14 670: }
5583d77f1c 2019-09-14 671:
5583d77f1c 2019-09-14 672: if ((types->type & TCL_GLOB_TYPE_MOUNT) == TCL_GLOB_TYPE_MOUNT) {
d80c88cee0 2019-09-16 673: path = xvfs_absolutePath(path);
5583d77f1c 2019-09-14 674: pathStr = xvfs_relativePath(path, instanceInfo);
5583d77f1c 2019-09-14 675: if (!pathStr) {
d80c88cee0 2019-09-16 676: XVFS_DEBUG_PUTS("... no (checked for mount but not able to resolve path)");
d80c88cee0 2019-09-16 677:
d80c88cee0 2019-09-16 678: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 679:
d80c88cee0 2019-09-16 680: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 681: return(0);
5583d77f1c 2019-09-14 682: }
5583d77f1c 2019-09-14 683:
5583d77f1c 2019-09-14 684: if (strlen(pathStr) != 0) {
d80c88cee0 2019-09-16 685: XVFS_DEBUG_PUTS("... no (checked for mount but not our top-level directory)");
d80c88cee0 2019-09-16 686:
d80c88cee0 2019-09-16 687: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 688:
d80c88cee0 2019-09-16 689: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 690: return(0);
5583d77f1c 2019-09-14 691: }
d80c88cee0 2019-09-16 692:
d80c88cee0 2019-09-16 693: Tcl_DecrRefCount(path);
5583d77f1c 2019-09-14 694: }
5583d77f1c 2019-09-14 695:
d80c88cee0 2019-09-16 696: XVFS_DEBUG_PUTS("... yes");
d80c88cee0 2019-09-16 697:
d80c88cee0 2019-09-16 698: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 699: return(1);
5583d77f1c 2019-09-14 700: }
5583d77f1c 2019-09-14 701:
5583d77f1c 2019-09-14 702: static int xvfs_tclfs_matchInDir(Tcl_Interp *interp, Tcl_Obj *resultPtr, Tcl_Obj *path, const char *pattern, Tcl_GlobTypeData *types, struct xvfs_tclfs_instance_info *instanceInfo) {
5583d77f1c 2019-09-14 703: const char *pathStr;
5583d77f1c 2019-09-14 704: const char **children, *child;
5583d77f1c 2019-09-14 705: Tcl_WideInt childrenCount, idx;
5583d77f1c 2019-09-14 706: Tcl_Obj *childObj;
5583d77f1c 2019-09-14 707: int tclRetVal;
5583d77f1c 2019-09-14 708:
5583d77f1c 2019-09-14 709: if (pattern == NULL) {
5583d77f1c 2019-09-14 710: if (xvfs_tclfs_verifyType(path, types, instanceInfo)) {
5583d77f1c 2019-09-14 711: return(TCL_OK);
5583d77f1c 2019-09-14 712: }
5583d77f1c 2019-09-14 713:
5583d77f1c 2019-09-14 714: return(TCL_ERROR);
5583d77f1c 2019-09-14 715: }
5583d77f1c 2019-09-14 716:
d80c88cee0 2019-09-16 717: XVFS_DEBUG_ENTER;
d80c88cee0 2019-09-16 718:
d80c88cee0 2019-09-16 719: path = xvfs_absolutePath(path);
d80c88cee0 2019-09-16 720:
d80c88cee0 2019-09-16 721: if (types) {
d80c88cee0 2019-09-16 722: XVFS_DEBUG_PRINTF("Checking for files matching %s in \"%s\" and type=%i and perm=%i ...", pattern, Tcl_GetString(path), types->type, types->perm);
d80c88cee0 2019-09-16 723: } else {
d80c88cee0 2019-09-16 724: XVFS_DEBUG_PRINTF("Checking for files matching %s in \"%s\" ...", pattern, Tcl_GetString(path));
d80c88cee0 2019-09-16 725: }
d80c88cee0 2019-09-16 726:
5583d77f1c 2019-09-14 727: pathStr = xvfs_relativePath(path, instanceInfo);
5583d77f1c 2019-09-14 728: if (!pathStr) {
d80c88cee0 2019-09-16 729: XVFS_DEBUG_PUTS("... error (not in our VFS)");
d80c88cee0 2019-09-16 730:
d80c88cee0 2019-09-16 731: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 732:
5583d77f1c 2019-09-14 733: if (interp) {
5583d77f1c 2019-09-14 734: Tcl_SetResult(interp, (char *) xvfs_perror(XVFS_RV_ERR_ENOENT), NULL);
5583d77f1c 2019-09-14 735: }
5583d77f1c 2019-09-14 736:
d80c88cee0 2019-09-16 737: XVFS_DEBUG_LEAVE;
d80c88cee0 2019-09-16 738: return(TCL_OK);
5583d77f1c 2019-09-14 739: }
5583d77f1c 2019-09-14 740:
5583d77f1c 2019-09-14 741: childrenCount = 0;
5583d77f1c 2019-09-14 742: children = instanceInfo->fsInfo->getChildrenProc(pathStr, &childrenCount);
5583d77f1c 2019-09-14 743: if (childrenCount < 0) {
d80c88cee0 2019-09-16 744: XVFS_DEBUG_PRINTF("... error: %s", xvfs_perror(childrenCount));
d80c88cee0 2019-09-16 745:
d80c88cee0 2019-09-16 746: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 747:
5583d77f1c 2019-09-14 748: if (interp) {
5583d77f1c 2019-09-14 749: Tcl_SetResult(interp, (char *) xvfs_perror(childrenCount), NULL);
5583d77f1c 2019-09-14 750: }
5583d77f1c 2019-09-14 751:
d80c88cee0 2019-09-16 752: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 753: return(TCL_ERROR);
5583d77f1c 2019-09-14 754: }
5583d77f1c 2019-09-14 755:
5583d77f1c 2019-09-14 756: for (idx = 0; idx < childrenCount; idx++) {
5583d77f1c 2019-09-14 757: child = children[idx];
5583d77f1c 2019-09-14 758:
5583d77f1c 2019-09-14 759: if (!Tcl_StringMatch(child, pattern)) {
5583d77f1c 2019-09-14 760: continue;
5583d77f1c 2019-09-14 761: }
5583d77f1c 2019-09-14 762:
5583d77f1c 2019-09-14 763: childObj = Tcl_DuplicateObj(path);
5583d77f1c 2019-09-14 764: Tcl_IncrRefCount(childObj);
5ae034e55e 2019-09-14 765: Tcl_AppendStringsToObj(childObj, "/", child, NULL);
5583d77f1c 2019-09-14 766:
5583d77f1c 2019-09-14 767: if (!xvfs_tclfs_verifyType(childObj, types, instanceInfo)) {
5583d77f1c 2019-09-14 768: Tcl_DecrRefCount(childObj);
5583d77f1c 2019-09-14 769:
5583d77f1c 2019-09-14 770: continue;
5583d77f1c 2019-09-14 771: }
5583d77f1c 2019-09-14 772:
5583d77f1c 2019-09-14 773: tclRetVal = Tcl_ListObjAppendElement(interp, resultPtr, childObj);
5583d77f1c 2019-09-14 774: Tcl_DecrRefCount(childObj);
5583d77f1c 2019-09-14 775:
5583d77f1c 2019-09-14 776: if (tclRetVal != TCL_OK) {
d80c88cee0 2019-09-16 777: XVFS_DEBUG_PUTS("... error (lappend)");
d80c88cee0 2019-09-16 778: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 779:
d80c88cee0 2019-09-16 780: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 781: return(tclRetVal);
5583d77f1c 2019-09-14 782: }
5583d77f1c 2019-09-14 783: }
5583d77f1c 2019-09-14 784:
d80c88cee0 2019-09-16 785: Tcl_DecrRefCount(path);
d80c88cee0 2019-09-16 786:
d80c88cee0 2019-09-16 787: XVFS_DEBUG_PRINTF("... ok (returning items: %s)", Tcl_GetString(resultPtr));
d80c88cee0 2019-09-16 788:
d80c88cee0 2019-09-16 789: XVFS_DEBUG_LEAVE;
5583d77f1c 2019-09-14 790: return(TCL_OK);
d121970301 2019-05-02 791: }
3e44e1def1 2019-05-02 792: #endif /* XVFS_MODE_SERVER || XVFS_MODE_STANDALONE || XVFS_MODE_FLEIXBLE */
d121970301 2019-05-02 793:
88f96696b7 2019-05-03 794: #if defined(XVFS_MODE_STANDALONE) || defined(XVFS_MODE_FLEXIBLE)
d121970301 2019-05-02 795: /*
d121970301 2019-05-02 796: * Tcl_Filesystem handlers for the standalone implementation
d121970301 2019-05-02 797: */
acfc5037c6 2019-05-02 798: static struct xvfs_tclfs_instance_info xvfs_tclfs_standalone_info;
d121970301 2019-05-02 799: static int xvfs_tclfs_standalone_pathInFilesystem(Tcl_Obj *path, ClientData *dataPtr) {
d121970301 2019-05-02 800: return(xvfs_tclfs_pathInFilesystem(path, dataPtr, &xvfs_tclfs_standalone_info));
d121970301 2019-05-02 801: }
d121970301 2019-05-02 802:
d121970301 2019-05-02 803: static int xvfs_tclfs_standalone_stat(Tcl_Obj *path, Tcl_StatBuf *statBuf) {
d121970301 2019-05-02 804: return(xvfs_tclfs_stat(path, statBuf, &xvfs_tclfs_standalone_info));
d121970301 2019-05-02 805: }
d121970301 2019-05-02 806:
12ff77016f 2019-09-14 807: static int xvfs_tclfs_standalone_access(Tcl_Obj *path, int mode) {
12ff77016f 2019-09-14 808: return(xvfs_tclfs_access(path, mode, &xvfs_tclfs_standalone_info));
e5b6962adf 2019-05-02 809: }
e5b6962adf 2019-05-02 810:
d121970301 2019-05-02 811: static Tcl_Channel xvfs_tclfs_standalone_openFileChannel(Tcl_Interp *interp, Tcl_Obj *path, int mode, int permissions) {
d121970301 2019-05-02 812: return(xvfs_tclfs_openFileChannel(interp, path, mode, permissions, &xvfs_tclfs_standalone_info));
5583d77f1c 2019-09-14 813: }
5583d77f1c 2019-09-14 814:
5583d77f1c 2019-09-14 815: static int xvfs_tclfs_standalone_matchInDir(Tcl_Interp *interp, Tcl_Obj *resultPtr, Tcl_Obj *pathPtr, const char *pattern, Tcl_GlobTypeData *types) {
5583d77f1c 2019-09-14 816: return(xvfs_tclfs_matchInDir(interp, resultPtr, pathPtr, pattern, types, &xvfs_tclfs_standalone_info));
e5b6962adf 2019-05-02 817: }
32b55a907b 2019-05-02 818:
32b55a907b 2019-05-02 819: /*
32b55a907b 2019-05-02 820: * There are three (3) modes of operation for Xvfs_Register:
32b55a907b 2019-05-02 821: * 1. standalone -- We register our own Tcl_Filesystem
32b55a907b 2019-05-02 822: * and handle requests under `//xvfs:/<fsName>`
32b55a907b 2019-05-02 823: * 2. client -- A single Tcl_Filesystem is registered for the
32b55a907b 2019-05-02 824: * interp to handle requests under `//xvfs:/` which
32b55a907b 2019-05-02 825: * then dispatches to the appropriate registered
32b55a907b 2019-05-02 826: * handler
32b55a907b 2019-05-02 827: * 3. flexible -- Attempts to find a core Xvfs instance for the
32b55a907b 2019-05-02 828: * process at runtime, if found do #2, otherwise
32b55a907b 2019-05-02 829: * fallback to #1
32b55a907b 2019-05-02 830: *
32b55a907b 2019-05-02 831: */
cb77ecfb24 2019-05-06 832: static Tcl_Filesystem xvfs_tclfs_standalone_fs;
b8cca3a6b4 2019-05-08 833: static int xvfs_standalone_register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
e5b6962adf 2019-05-02 834: int tcl_ret;
d121970301 2019-05-02 835: static int registered = 0;
38bed7cee0 2019-09-13 836:
d121970301 2019-05-02 837: /*
d121970301 2019-05-02 838: * Ensure this instance is not already registered
d121970301 2019-05-02 839: */
d121970301 2019-05-02 840: if (registered) {
d121970301 2019-05-02 841: return(TCL_OK);
d121970301 2019-05-02 842: }
d121970301 2019-05-02 843: registered = 1;
d121970301 2019-05-02 844:
e5b6962adf 2019-05-02 845: /*
e5b6962adf 2019-05-02 846: * In standalone mode, we only support the same protocol we are
e5b6962adf 2019-05-02 847: * compiling for.
e5b6962adf 2019-05-02 848: */
e5b6962adf 2019-05-02 849: if (fsInfo->protocolVersion != XVFS_PROTOCOL_VERSION) {
e5b6962adf 2019-05-02 850: if (interp) {
e5b6962adf 2019-05-02 851: Tcl_SetResult(interp, "Protocol mismatch", NULL);
e5b6962adf 2019-05-02 852: }
e5b6962adf 2019-05-02 853: return(TCL_ERROR);
e5b6962adf 2019-05-02 854: }
38bed7cee0 2019-09-13 855:
cb77ecfb24 2019-05-06 856: xvfs_tclfs_standalone_fs.typeName = "xvfs";
cb77ecfb24 2019-05-06 857: xvfs_tclfs_standalone_fs.structureLength = sizeof(xvfs_tclfs_standalone_fs);
cb77ecfb24 2019-05-06 858: xvfs_tclfs_standalone_fs.version = TCL_FILESYSTEM_VERSION_1;
cb77ecfb24 2019-05-06 859: xvfs_tclfs_standalone_fs.pathInFilesystemProc = xvfs_tclfs_standalone_pathInFilesystem;
cb77ecfb24 2019-05-06 860: xvfs_tclfs_standalone_fs.dupInternalRepProc = NULL;
cb77ecfb24 2019-05-06 861: xvfs_tclfs_standalone_fs.freeInternalRepProc = NULL;
cb77ecfb24 2019-05-06 862: xvfs_tclfs_standalone_fs.internalToNormalizedProc = NULL;
cb77ecfb24 2019-05-06 863: xvfs_tclfs_standalone_fs.createInternalRepProc = NULL;
cb77ecfb24 2019-05-06 864: xvfs_tclfs_standalone_fs.normalizePathProc = NULL;
cb77ecfb24 2019-05-06 865: xvfs_tclfs_standalone_fs.filesystemPathTypeProc = NULL;
cb77ecfb24 2019-05-06 866: xvfs_tclfs_standalone_fs.filesystemSeparatorProc = NULL;
cb77ecfb24 2019-05-06 867: xvfs_tclfs_standalone_fs.statProc = xvfs_tclfs_standalone_stat;
12ff77016f 2019-09-14 868: xvfs_tclfs_standalone_fs.accessProc = xvfs_tclfs_standalone_access;
cb77ecfb24 2019-05-06 869: xvfs_tclfs_standalone_fs.openFileChannelProc = xvfs_tclfs_standalone_openFileChannel;
5583d77f1c 2019-09-14 870: xvfs_tclfs_standalone_fs.matchInDirectoryProc = xvfs_tclfs_standalone_matchInDir;
cb77ecfb24 2019-05-06 871: xvfs_tclfs_standalone_fs.utimeProc = NULL;
cb77ecfb24 2019-05-06 872: xvfs_tclfs_standalone_fs.linkProc = NULL;
d80c88cee0 2019-09-16 873: xvfs_tclfs_standalone_fs.listVolumesProc = NULL;
cb77ecfb24 2019-05-06 874: xvfs_tclfs_standalone_fs.fileAttrStringsProc = NULL;
cb77ecfb24 2019-05-06 875: xvfs_tclfs_standalone_fs.fileAttrsGetProc = NULL;
cb77ecfb24 2019-05-06 876: xvfs_tclfs_standalone_fs.fileAttrsSetProc = NULL;
cb77ecfb24 2019-05-06 877: xvfs_tclfs_standalone_fs.createDirectoryProc = NULL;
cb77ecfb24 2019-05-06 878: xvfs_tclfs_standalone_fs.removeDirectoryProc = NULL;
cb77ecfb24 2019-05-06 879: xvfs_tclfs_standalone_fs.deleteFileProc = NULL;
cb77ecfb24 2019-05-06 880: xvfs_tclfs_standalone_fs.copyFileProc = NULL;
cb77ecfb24 2019-05-06 881: xvfs_tclfs_standalone_fs.renameFileProc = NULL;
cb77ecfb24 2019-05-06 882: xvfs_tclfs_standalone_fs.copyDirectoryProc = NULL;
cb77ecfb24 2019-05-06 883: xvfs_tclfs_standalone_fs.lstatProc = NULL;
cb77ecfb24 2019-05-06 884: xvfs_tclfs_standalone_fs.loadFileProc = NULL;
cb77ecfb24 2019-05-06 885: xvfs_tclfs_standalone_fs.getCwdProc = NULL;
cb77ecfb24 2019-05-06 886: xvfs_tclfs_standalone_fs.chdirProc = NULL;
d121970301 2019-05-02 887:
d121970301 2019-05-02 888: xvfs_tclfs_standalone_info.fsInfo = fsInfo;
d121970301 2019-05-02 889: xvfs_tclfs_standalone_info.mountpoint = Tcl_NewObj();
5ae034e55e 2019-09-14 890:
5ae034e55e 2019-09-14 891: Tcl_IncrRefCount(xvfs_tclfs_standalone_info.mountpoint);
d121970301 2019-05-02 892: Tcl_AppendStringsToObj(xvfs_tclfs_standalone_info.mountpoint, XVFS_ROOT_MOUNTPOINT, fsInfo->name, NULL);
5ae034e55e 2019-09-14 893:
cb77ecfb24 2019-05-06 894: tcl_ret = Tcl_FSRegister(NULL, &xvfs_tclfs_standalone_fs);
e5b6962adf 2019-05-02 895: if (tcl_ret != TCL_OK) {
5ae034e55e 2019-09-14 896: Tcl_DecrRefCount(xvfs_tclfs_standalone_info.mountpoint);
5ae034e55e 2019-09-14 897:
e5b6962adf 2019-05-02 898: if (interp) {
e5b6962adf 2019-05-02 899: Tcl_SetResult(interp, "Tcl_FSRegister() failed", NULL);
e5b6962adf 2019-05-02 900: }
38bed7cee0 2019-09-13 901:
e5b6962adf 2019-05-02 902: return(tcl_ret);
e5b6962adf 2019-05-02 903: }
38bed7cee0 2019-09-13 904:
38bed7cee0 2019-09-13 905: xvfs_tclfs_prepareChannelType();
38bed7cee0 2019-09-13 906:
e5b6962adf 2019-05-02 907: return(TCL_OK);
e5b6962adf 2019-05-02 908: }
d92ba3d36d 2019-05-08 909: #endif /* XVFS_MODE_STANDALONE || XVFS_MODE_FLEXIBLE */
88f96696b7 2019-05-03 910:
88f96696b7 2019-05-03 911: #if defined(XVFS_MODE_FLEXIBLE)
b8cca3a6b4 2019-05-08 912: static int xvfs_flexible_register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
9bcf758fef 2019-05-08 913: ClientData fsHandlerDataRaw;
9bcf758fef 2019-05-08 914: struct xvfs_tclfs_server_info *fsHandlerData;
9bcf758fef 2019-05-08 915: const Tcl_Filesystem *fsHandler;
9bcf758fef 2019-05-08 916: int (*xvfs_register)(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo);
9bcf758fef 2019-05-08 917: Tcl_Obj *rootPathObj;
9bcf758fef 2019-05-08 918:
9bcf758fef 2019-05-08 919: xvfs_register = &xvfs_standalone_register;
9bcf758fef 2019-05-08 920:
9bcf758fef 2019-05-08 921: rootPathObj = Tcl_NewStringObj(XVFS_ROOT_MOUNTPOINT, -1);
9bcf758fef 2019-05-08 922: if (!rootPathObj) {
9bcf758fef 2019-05-08 923: return(xvfs_register(interp, fsInfo));
9bcf758fef 2019-05-08 924: }
9bcf758fef 2019-05-08 925:
9bcf758fef 2019-05-08 926: Tcl_IncrRefCount(rootPathObj);
9bcf758fef 2019-05-08 927: fsHandler = Tcl_FSGetFileSystemForPath(rootPathObj);
9bcf758fef 2019-05-08 928: Tcl_DecrRefCount(rootPathObj);
9bcf758fef 2019-05-08 929:
9bcf758fef 2019-05-08 930: if (!fsHandler) {
9bcf758fef 2019-05-08 931: return(xvfs_register(interp, fsInfo));
9bcf758fef 2019-05-08 932: }
9bcf758fef 2019-05-08 933:
9bcf758fef 2019-05-08 934: fsHandlerDataRaw = Tcl_FSData(fsHandler);
9bcf758fef 2019-05-08 935: if (!fsHandlerDataRaw) {
9bcf758fef 2019-05-08 936: return(xvfs_register(interp, fsInfo));
9bcf758fef 2019-05-08 937: }
9bcf758fef 2019-05-08 938:
9bcf758fef 2019-05-08 939: fsHandlerData = (struct xvfs_tclfs_server_info *) fsHandlerDataRaw;
88f96696b7 2019-05-03 940:
88f96696b7 2019-05-03 941: /*
9bcf758fef 2019-05-08 942: * XXX:TODO: What is the chance that the handler for //xvfs:/ hold
b586d5b0a1 2019-05-08 943: * client data smaller than XVFS_INTERNAL_SERVER_MAGIC_LEN ?
88f96696b7 2019-05-03 944: */
b586d5b0a1 2019-05-08 945: if (memcmp(fsHandlerData->magic, XVFS_INTERNAL_SERVER_MAGIC, sizeof(fsHandlerData->magic)) == 0) {
9bcf758fef 2019-05-08 946: xvfs_register = fsHandlerData->registerProc;
88f96696b7 2019-05-03 947: }
9bcf758fef 2019-05-08 948:
88f96696b7 2019-05-03 949: return(xvfs_register(interp, fsInfo));
88f96696b7 2019-05-03 950: }
d92ba3d36d 2019-05-08 951: #endif /* XVFS_MODE_FLEXIBLE */
3e44e1def1 2019-05-02 952:
3e44e1def1 2019-05-02 953: #if defined(XVFS_MODE_SERVER)
e5b6962adf 2019-05-02 954: int Xvfs_Register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
acfc5037c6 2019-05-02 955: return(TCL_ERROR);
69e476dcd5 2019-05-02 956: }
d92ba3d36d 2019-05-08 957: #endif /* XVFS_MODE_SERVER */