1 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
2 | // File : ksh.c |
---|
3 | // Date : October 2017 |
---|
4 | // Author : Alain Greiner |
---|
5 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
6 | // This application implements a minimal shell for ALMOS-MKH. |
---|
7 | // |
---|
8 | // This user process contains two POSIX threads: |
---|
9 | // - the "main" thread contains the infinite loop implementing |
---|
10 | // the children processes termination monitoring, using the wait() syscall. |
---|
11 | // - the "interactive" thread contains the infinite loop implementing the command |
---|
12 | // interpreter attached to the TXT terminal, and handling one KSH command |
---|
13 | // per iteration. |
---|
14 | // |
---|
15 | // The children processes are created by the <load> command, and are |
---|
16 | // attached to the same TXT terminal as the parent KSH process. |
---|
17 | // A child process can be launched in foreground or in background: |
---|
18 | // . when the child process is launched in foreground, the KSH process loses |
---|
19 | // the TXT terminal ownership, that is transfered to the child process. |
---|
20 | // . when the child process is launched in background, the KSH process keeps |
---|
21 | // the TXT terminal ownership. |
---|
22 | // |
---|
23 | // We use a semaphore to synchronize the two KSH threads. After each command |
---|
24 | // completion, the interactive thread check the TXT ownership (with a sem_wait), |
---|
25 | // and blocks, if the KSH process loosed the TXT ownership (after a load, |
---|
26 | // or for any other cause). It is unblocked with the following policy: |
---|
27 | // . if the command is "not a load", the semaphore is incremented by the |
---|
28 | // cmd_***() function when the command is completed, to get the next command |
---|
29 | // in the while loop. |
---|
30 | // . if the command is a "load without &", the TXT is given to the NEW process by the |
---|
31 | // execve() syscall, and is released to the KSH process when NEW process terminates. |
---|
32 | // The KSH process is notified and the KSH main() function increments the semahore |
---|
33 | // to allow the KSH interactive() function to handle commands. |
---|
34 | // . if the command is a "load with &", the cmd_load() function returns the TXT |
---|
35 | // to the KSH process and increment the semaphore, when the parent KSH process |
---|
36 | // returns from the fork() syscall. |
---|
37 | ///////////////////////////////////////////////////////////////////////////////////////// |
---|
38 | |
---|
39 | #include <stdio.h> |
---|
40 | #include <stdlib.h> |
---|
41 | #include <string.h> |
---|
42 | #include <sys/wait.h> |
---|
43 | #include <signal.h> |
---|
44 | #include <unistd.h> |
---|
45 | #include <dirent.h> |
---|
46 | #include <almosmkh.h> |
---|
47 | #include <semaphore.h> |
---|
48 | #include <hal_macros.h> |
---|
49 | #include <sys/stat.h> |
---|
50 | #include <sys/mman.h> |
---|
51 | #include <fcntl.h> |
---|
52 | #include <shared_syscalls.h> |
---|
53 | |
---|
54 | #define CMD_MAX_SIZE (256) // max number of characters in one command |
---|
55 | #define LOG_DEPTH (32) // max number of registered commands |
---|
56 | #define MAX_ARGS (32) // max number of arguments in a command |
---|
57 | #define PATH_MAX_SIZE (256) // max number of characters in a pathname |
---|
58 | |
---|
59 | #define DEBUG_MAIN 0 |
---|
60 | #define DEBUG_EXECUTE 0 |
---|
61 | #define DEBUG_CMD_CAT 0 |
---|
62 | #define DEBUG_CMD_CP 0 |
---|
63 | #define DEBUG_CMD_LOAD 0 |
---|
64 | #define DEBUG_CMD_LS 0 |
---|
65 | #define DEBUG_CMD_PS 0 |
---|
66 | |
---|
67 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
68 | // Structures |
---|
69 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
70 | |
---|
71 | // one entry in the registered commands array |
---|
72 | typedef struct log_entry_s |
---|
73 | { |
---|
74 | char buf[CMD_MAX_SIZE]; |
---|
75 | unsigned int count; |
---|
76 | } |
---|
77 | log_entry_t; |
---|
78 | |
---|
79 | // one entry in the supported command types array |
---|
80 | typedef struct ksh_cmd_s |
---|
81 | { |
---|
82 | char * name; |
---|
83 | char * desc; |
---|
84 | void (*fn)( int , char ** ); |
---|
85 | } |
---|
86 | ksh_cmd_t; |
---|
87 | |
---|
88 | |
---|
89 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
90 | // Global Variables |
---|
91 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
92 | |
---|
93 | ksh_cmd_t command[]; // array of supported commands |
---|
94 | |
---|
95 | log_entry_t log_entries[LOG_DEPTH]; // array of registered commands |
---|
96 | |
---|
97 | unsigned int ptw; // write pointer in log_entries[] |
---|
98 | unsigned int ptr; // read pointer in log_entries[] |
---|
99 | |
---|
100 | pthread_attr_t attr; // interactive thread attributes |
---|
101 | |
---|
102 | sem_t semaphore; // block interactive thread when zero |
---|
103 | |
---|
104 | pthread_t trdid; // interactive thread identifier |
---|
105 | |
---|
106 | char cmd[CMD_MAX_SIZE]; // buffer for one command |
---|
107 | |
---|
108 | char elf_path[PATH_MAX_SIZE]; // pathname for cmd_load command |
---|
109 | |
---|
110 | char pathname[PATH_MAX_SIZE]; // pathname for a file |
---|
111 | |
---|
112 | char pathnew[PATH_MAX_SIZE]; // used by the cmd_rename command |
---|
113 | |
---|
114 | char string[256]; // used by snprintf() for debug |
---|
115 | |
---|
116 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
117 | // Shell Commands |
---|
118 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
119 | |
---|
120 | ///////////////////////////////////////////// |
---|
121 | static void cmd_cat( int argc , char **argv ) |
---|
122 | { |
---|
123 | struct stat st; |
---|
124 | int fd; |
---|
125 | int size; |
---|
126 | char * buf; |
---|
127 | |
---|
128 | #if DEBUG_CMD_CAT |
---|
129 | printf("\n[ksh] %s enters" , __FUNCTION__); |
---|
130 | #endif |
---|
131 | |
---|
132 | if (argc != 2) |
---|
133 | { |
---|
134 | printf(" usage: cat pathname\n"); |
---|
135 | |
---|
136 | sem_post( &semaphore ); |
---|
137 | return; |
---|
138 | } |
---|
139 | |
---|
140 | strcpy( pathname , argv[1] ); |
---|
141 | |
---|
142 | #if DEBUG_CMD_CAT |
---|
143 | printf("\n[ksh] %s : after strcpy" , __FUNCTION__ ); |
---|
144 | #endif |
---|
145 | |
---|
146 | // open the file |
---|
147 | fd = open( pathname , O_RDONLY , 0 ); |
---|
148 | if (fd < 0) |
---|
149 | { |
---|
150 | printf(" error: cannot open file <%s>\n", pathname ); |
---|
151 | |
---|
152 | sem_post( &semaphore ); |
---|
153 | return; |
---|
154 | } |
---|
155 | |
---|
156 | #if DEBUG_CMD_CAT |
---|
157 | printf("\n[ksh] %s : file %s open", __FUNCTION__, pathname ); |
---|
158 | #endif |
---|
159 | |
---|
160 | // get file stats |
---|
161 | if ( stat( pathname , &st ) == -1) |
---|
162 | { |
---|
163 | printf(" error: cannot stat <%s>\n", pathname ); |
---|
164 | |
---|
165 | close(fd); |
---|
166 | sem_post( &semaphore ); |
---|
167 | return; |
---|
168 | } |
---|
169 | |
---|
170 | if ( S_ISDIR(st.st_mode) ) |
---|
171 | { |
---|
172 | printf(" error: <%s> is a directory\n", pathname ); |
---|
173 | |
---|
174 | close(fd); |
---|
175 | sem_post( &semaphore ); |
---|
176 | return; |
---|
177 | } |
---|
178 | |
---|
179 | // get file size |
---|
180 | size = st.st_size; |
---|
181 | |
---|
182 | #if DEBUG_CMD_CAT |
---|
183 | printf("\n[ksh] %s : size = %d", __FUNCTION__, size ); |
---|
184 | #endif |
---|
185 | |
---|
186 | if( size == 0 ) |
---|
187 | { |
---|
188 | printf(" error: size = 0 for <%s>\n", pathname ); |
---|
189 | |
---|
190 | close(fd); |
---|
191 | sem_post( &semaphore ); |
---|
192 | return; |
---|
193 | } |
---|
194 | |
---|
195 | // mapping type is MAP_FILE when MAP_ANON and MAP_REMOTE are not specified |
---|
196 | buf = mmap( NULL , size , PROT_READ|PROT_WRITE , MAP_PRIVATE , fd , 0 ); |
---|
197 | |
---|
198 | if ( buf == NULL ) |
---|
199 | { |
---|
200 | printf(" error: cannot map file <%s>\n", pathname ); |
---|
201 | |
---|
202 | close(fd); |
---|
203 | sem_post( &semaphore ); |
---|
204 | return; |
---|
205 | } |
---|
206 | |
---|
207 | #if DEBUG_CMD_CAT |
---|
208 | printf("\n[ksh] %s : mapped file %d to buffer %x", __FUNCTION__, fd , buf ); |
---|
209 | #endif |
---|
210 | |
---|
211 | // display the file content on TXT terminal |
---|
212 | write( 1 , buf , size ); |
---|
213 | |
---|
214 | // unmap the file |
---|
215 | if( munmap( buf , size ) ) |
---|
216 | { |
---|
217 | printf(" error: cannot unmap file <%s>\n", pathname ); |
---|
218 | } |
---|
219 | |
---|
220 | #if DEBUG_CMD_CAT |
---|
221 | printf("\n[ksh] %s : unmapped file %d from buffer %x", __FUNCTION__, fd , buf ); |
---|
222 | #endif |
---|
223 | |
---|
224 | // close the file |
---|
225 | if( close( fd ) ) |
---|
226 | { |
---|
227 | printf(" error: cannot close file <%s>\n", pathname ); |
---|
228 | } |
---|
229 | |
---|
230 | // release semaphore to get next command |
---|
231 | sem_post( &semaphore ); |
---|
232 | |
---|
233 | } // end cmd_cat() |
---|
234 | |
---|
235 | //////////////////////////////////////////// |
---|
236 | static void cmd_cd( int argc , char **argv ) |
---|
237 | { |
---|
238 | if (argc != 2) |
---|
239 | { |
---|
240 | printf(" usage: cd pathname\n"); |
---|
241 | } |
---|
242 | else |
---|
243 | { |
---|
244 | strcpy( pathname , argv[1] ); |
---|
245 | |
---|
246 | // call the relevant syscall |
---|
247 | if( chdir( pathname ) ) |
---|
248 | { |
---|
249 | printf(" error: cannot found <%s> directory\n", pathname ); |
---|
250 | } |
---|
251 | } |
---|
252 | |
---|
253 | // release semaphore to get next command |
---|
254 | sem_post( &semaphore ); |
---|
255 | |
---|
256 | } // end cmd_cd() |
---|
257 | |
---|
258 | ///////////////////////////////////////// |
---|
259 | static void cmd_cp(int argc, char **argv) |
---|
260 | { |
---|
261 | int src_fd; |
---|
262 | int dst_fd; |
---|
263 | int size; // source file size |
---|
264 | int bytes; // number of transfered bytes |
---|
265 | char buf[4096]; |
---|
266 | struct stat st; |
---|
267 | |
---|
268 | #if DEBUG_CMD_CP |
---|
269 | printf("\n[ksh] enter %s" , __FUNCTION__); |
---|
270 | #endif |
---|
271 | |
---|
272 | if (argc != 3) |
---|
273 | { |
---|
274 | src_fd = -1; |
---|
275 | dst_fd = -1; |
---|
276 | printf(" usage: cp src_pathname dst_pathname\n"); |
---|
277 | goto cmd_cp_exit; |
---|
278 | } |
---|
279 | |
---|
280 | // open the src file |
---|
281 | strcpy( pathname , argv[1] ); |
---|
282 | src_fd = open( pathname , O_RDONLY , 0 ); |
---|
283 | |
---|
284 | if ( src_fd < 0 ) |
---|
285 | { |
---|
286 | dst_fd = -1; |
---|
287 | printf(" error: cannot open <%s>\n", argv[1] ); |
---|
288 | goto cmd_cp_exit; |
---|
289 | } |
---|
290 | |
---|
291 | #if DEBUG_CMD_CP |
---|
292 | printf("\n[ksh] %s : file %s open", __FUNCTION__, argv[1] ); |
---|
293 | #endif |
---|
294 | |
---|
295 | // get file stats |
---|
296 | if ( stat( pathname , &st ) ) |
---|
297 | { |
---|
298 | dst_fd = -1; |
---|
299 | printf(" error: cannot stat <%s>\n", argv[1] ); |
---|
300 | goto cmd_cp_exit; |
---|
301 | } |
---|
302 | |
---|
303 | #if DEBUG_CMD_CP |
---|
304 | printf("\n[ksh] %s : got stats for %s", __FUNCTION__, argv[1] ); |
---|
305 | #endif |
---|
306 | |
---|
307 | if ( S_ISDIR(st.st_mode) ) |
---|
308 | { |
---|
309 | dst_fd = -1; |
---|
310 | printf(" error: <%s> is a directory\n", argv[1] ); |
---|
311 | goto cmd_cp_exit; |
---|
312 | } |
---|
313 | |
---|
314 | // get src file size |
---|
315 | size = st.st_size; |
---|
316 | |
---|
317 | // open the dst file |
---|
318 | strcpy( pathname , argv[2] ); |
---|
319 | dst_fd = open( pathname , O_CREAT|O_TRUNC|O_RDWR , 0 ); |
---|
320 | |
---|
321 | if ( dst_fd < 0 ) |
---|
322 | { |
---|
323 | printf(" error: cannot open <%s>\n", argv[2] ); |
---|
324 | goto cmd_cp_exit; |
---|
325 | } |
---|
326 | |
---|
327 | #if DEBUG_CMD_CP |
---|
328 | printf("\n[ksh] %s : file %s open", __FUNCTION__, argv[2] ); |
---|
329 | #endif |
---|
330 | |
---|
331 | if ( stat( pathname , &st ) ) |
---|
332 | { |
---|
333 | printf(" error: cannot stat <%s>\n", argv[2] ); |
---|
334 | goto cmd_cp_exit; |
---|
335 | } |
---|
336 | |
---|
337 | #if DEBUG_CMD_CP |
---|
338 | printf("\n[ksh] %s : got stats for %s", __FUNCTION__, argv[2] ); |
---|
339 | #endif |
---|
340 | |
---|
341 | if ( S_ISDIR(st.st_mode ) ) |
---|
342 | { |
---|
343 | printf(" error: <%s> is a directory\n", argv[2] ); |
---|
344 | goto cmd_cp_exit; |
---|
345 | } |
---|
346 | |
---|
347 | bytes = 0; |
---|
348 | |
---|
349 | while (bytes < size) |
---|
350 | { |
---|
351 | int len = ((size - bytes) < 4096) ? (size - bytes) : 4096; |
---|
352 | |
---|
353 | // read the source |
---|
354 | if ( read( src_fd , buf , len ) != len ) |
---|
355 | { |
---|
356 | printf(" error: cannot read from file <%s>\n", argv[1] ); |
---|
357 | goto cmd_cp_exit; |
---|
358 | } |
---|
359 | |
---|
360 | #if DEBUG_CMD_CP |
---|
361 | printf("\n[ksh] %s : read %d bytes from %s", __FUNCTION__, len, argv[1] ); |
---|
362 | #endif |
---|
363 | |
---|
364 | // write to the destination |
---|
365 | if ( write( dst_fd , buf , len ) != len ) |
---|
366 | { |
---|
367 | printf(" error: cannot write to file <%s>\n", argv[2] ); |
---|
368 | goto cmd_cp_exit; |
---|
369 | } |
---|
370 | |
---|
371 | #if DEBUG_CMD_CP |
---|
372 | printf("\n[ksh] %s : write %d bytes to %s", __FUNCTION__, len, argv[2] ); |
---|
373 | #endif |
---|
374 | |
---|
375 | bytes += len; |
---|
376 | } |
---|
377 | |
---|
378 | cmd_cp_exit: |
---|
379 | |
---|
380 | if (src_fd >= 0) close(src_fd); |
---|
381 | if (dst_fd >= 0) close(dst_fd); |
---|
382 | |
---|
383 | // release semaphore to get next command |
---|
384 | sem_post( &semaphore ); |
---|
385 | |
---|
386 | } // end cmd_cp() |
---|
387 | |
---|
388 | ///////////////////////////////////////////////// |
---|
389 | static void cmd_display( int argc , char **argv ) |
---|
390 | { |
---|
391 | if( argc < 2 ) |
---|
392 | { |
---|
393 | printf(" usage: display vmm cxy pid mapping\n" |
---|
394 | " display sched cxy lid\n" |
---|
395 | " display process cxy\n" |
---|
396 | " display txt txtid\n" |
---|
397 | " display vfs\n" |
---|
398 | " display chdev\n" |
---|
399 | " display dqdt\n" |
---|
400 | " display locks pid trdid\n" |
---|
401 | " display barrier pid\n" |
---|
402 | " display mapper path page nbytes\n" |
---|
403 | " display fat min nslots\n" |
---|
404 | " display fat cxy 0\n" |
---|
405 | " display socket pid fdid\n" |
---|
406 | " display fd pid\n" |
---|
407 | " display fbf pid\n" ); |
---|
408 | } |
---|
409 | //////////////////////////////////// |
---|
410 | else if( strcmp( argv[1] , "vmm" ) == 0 ) |
---|
411 | { |
---|
412 | if( argc != 5 ) |
---|
413 | { |
---|
414 | printf(" usage: display vmm cxy pid mapping\n"); |
---|
415 | } |
---|
416 | else |
---|
417 | { |
---|
418 | unsigned int cxy = atoi(argv[2]); |
---|
419 | unsigned int pid = atoi(argv[3]); |
---|
420 | unsigned int map = atoi(argv[4]); |
---|
421 | |
---|
422 | if( display_vmm( cxy , pid , map ) ) |
---|
423 | { |
---|
424 | printf(" error: no process %x in cluster %x\n", pid , cxy ); |
---|
425 | } |
---|
426 | } |
---|
427 | } |
---|
428 | /////////////////////////////////////////// |
---|
429 | else if( strcmp( argv[1] , "sched" ) == 0 ) |
---|
430 | { |
---|
431 | if( argc != 4 ) |
---|
432 | { |
---|
433 | printf(" usage: display sched cxy lid\n"); |
---|
434 | } |
---|
435 | else |
---|
436 | { |
---|
437 | unsigned int cxy = atoi(argv[2]); |
---|
438 | unsigned int lid = atoi(argv[3]); |
---|
439 | |
---|
440 | if( display_sched( cxy , lid ) ) |
---|
441 | { |
---|
442 | printf(" error: illegal arguments cxy = %x / lid = %d\n", cxy, lid ); |
---|
443 | } |
---|
444 | } |
---|
445 | } |
---|
446 | ///////////////////////////////////////////// |
---|
447 | else if( strcmp( argv[1] , "process" ) == 0 ) |
---|
448 | { |
---|
449 | if( argc != 3 ) |
---|
450 | { |
---|
451 | printf(" usage: display process cxy\n"); |
---|
452 | } |
---|
453 | else |
---|
454 | { |
---|
455 | unsigned int cxy = atoi(argv[2]); |
---|
456 | |
---|
457 | if( display_cluster_processes( cxy , 0 ) ) |
---|
458 | { |
---|
459 | printf(" error: illegal argument cxy = %x\n", cxy ); |
---|
460 | } |
---|
461 | } |
---|
462 | } |
---|
463 | ///////////////////////////////////////// |
---|
464 | else if( strcmp( argv[1] , "txt" ) == 0 ) |
---|
465 | { |
---|
466 | if( argc != 3 ) |
---|
467 | { |
---|
468 | printf(" usage: display txt txt_id\n"); |
---|
469 | } |
---|
470 | else |
---|
471 | { |
---|
472 | unsigned int txtid = atoi(argv[2]); |
---|
473 | |
---|
474 | if( display_txt_processes( txtid ) ) |
---|
475 | { |
---|
476 | printf(" error: illegal argument txtid = %d\n", txtid ); |
---|
477 | } |
---|
478 | } |
---|
479 | } |
---|
480 | ///////////////////////////////////////// |
---|
481 | else if( strcmp( argv[1] , "vfs" ) == 0 ) |
---|
482 | { |
---|
483 | if( argc != 2 ) |
---|
484 | { |
---|
485 | printf(" usage: display vfs\n"); |
---|
486 | } |
---|
487 | else |
---|
488 | { |
---|
489 | display_vfs(); |
---|
490 | } |
---|
491 | } |
---|
492 | ////////////////////////////////////////// |
---|
493 | else if( strcmp( argv[1] , "chdev" ) == 0 ) |
---|
494 | { |
---|
495 | if( argc != 2 ) |
---|
496 | { |
---|
497 | printf(" usage: display chdev\n"); |
---|
498 | } |
---|
499 | else |
---|
500 | { |
---|
501 | display_chdev(); |
---|
502 | } |
---|
503 | } |
---|
504 | ////////////////////////////////////////// |
---|
505 | else if( strcmp( argv[1] , "dqdt" ) == 0 ) |
---|
506 | { |
---|
507 | if( argc != 2 ) |
---|
508 | { |
---|
509 | printf(" usage: display dqdt\n"); |
---|
510 | } |
---|
511 | else |
---|
512 | { |
---|
513 | display_dqdt(); |
---|
514 | } |
---|
515 | } |
---|
516 | /////////////////////////////////////////// |
---|
517 | else if( strcmp( argv[1] , "locks" ) == 0 ) |
---|
518 | { |
---|
519 | if( argc != 4 ) |
---|
520 | { |
---|
521 | printf(" usage: display locks pid trdid\n"); |
---|
522 | } |
---|
523 | else |
---|
524 | { |
---|
525 | unsigned int pid = atoi(argv[2]); |
---|
526 | unsigned int trdid = atoi(argv[3]); |
---|
527 | |
---|
528 | if( display_busylocks( pid , trdid ) ) |
---|
529 | { |
---|
530 | printf(" error: illegal arguments pid = %x / trdid = %x\n", pid, trdid ); |
---|
531 | } |
---|
532 | } |
---|
533 | } |
---|
534 | ///////////////////////////////////////////////// |
---|
535 | else if( strcmp( argv[1] , "barrier" ) == 0 ) |
---|
536 | { |
---|
537 | if( argc != 3 ) |
---|
538 | { |
---|
539 | printf(" usage: display barrier pid\n"); |
---|
540 | } |
---|
541 | else |
---|
542 | { |
---|
543 | unsigned int pid = atoi(argv[2]); |
---|
544 | |
---|
545 | if( display_barrier( pid ) ) |
---|
546 | { |
---|
547 | printf(" error: illegal arguments pid = %x\n", pid ); |
---|
548 | } |
---|
549 | } |
---|
550 | } |
---|
551 | /////////////////////////////////////////// |
---|
552 | else if( strcmp( argv[1] , "mapper" ) == 0 ) |
---|
553 | { |
---|
554 | if( argc != 5 ) |
---|
555 | { |
---|
556 | printf(" usage: display mapper path page_id nbytes\n"); |
---|
557 | } |
---|
558 | else |
---|
559 | { |
---|
560 | unsigned int page_id = atoi(argv[3]); |
---|
561 | unsigned int nbytes = atoi(argv[4]); |
---|
562 | |
---|
563 | if( display_mapper( argv[2] , page_id, nbytes ) ) |
---|
564 | { |
---|
565 | printf(" error: cannot display page %d of mapper %s\n", page_id, argv[2] ); |
---|
566 | } |
---|
567 | } |
---|
568 | } |
---|
569 | ///////////////////////////////////////// |
---|
570 | else if( strcmp( argv[1] , "fat" ) == 0 ) |
---|
571 | { |
---|
572 | if( argc != 4 ) |
---|
573 | { |
---|
574 | printf(" usage: display fat min_slot nb_slots\n"); |
---|
575 | } |
---|
576 | else |
---|
577 | { |
---|
578 | unsigned int min_slot = atoi(argv[2]); |
---|
579 | unsigned int nb_slots = atoi(argv[3]); |
---|
580 | |
---|
581 | if( display_fat( min_slot, nb_slots ) ) |
---|
582 | { |
---|
583 | printf(" error: cannot display fat\n"); |
---|
584 | } |
---|
585 | } |
---|
586 | } |
---|
587 | //////////////////////////////////////////// |
---|
588 | else if( strcmp( argv[1] , "socket" ) == 0 ) |
---|
589 | { |
---|
590 | if( argc != 4 ) |
---|
591 | { |
---|
592 | printf(" usage: display socket pid fdid\n"); |
---|
593 | } |
---|
594 | else |
---|
595 | { |
---|
596 | unsigned int pid = atoi(argv[2]); |
---|
597 | unsigned int fdid = atoi(argv[3]); |
---|
598 | |
---|
599 | if( display_socket( pid , fdid ) ) |
---|
600 | { |
---|
601 | printf(" error: cannot found socket[%x,%d]\n", pid, fdid ); |
---|
602 | } |
---|
603 | } |
---|
604 | } |
---|
605 | //////////////////////////////////////// |
---|
606 | else if( strcmp( argv[1] , "fd" ) == 0 ) |
---|
607 | { |
---|
608 | if( argc != 3 ) |
---|
609 | { |
---|
610 | printf(" usage: display fd pid\n"); |
---|
611 | } |
---|
612 | else |
---|
613 | { |
---|
614 | unsigned int pid = atoi(argv[2]); |
---|
615 | |
---|
616 | if( display_fd_array( pid ) ) |
---|
617 | { |
---|
618 | printf(" error: cannot found process %x\n", pid ); |
---|
619 | } |
---|
620 | } |
---|
621 | } |
---|
622 | //////////////////////////////////////// |
---|
623 | else if( strcmp( argv[1] , "fbf" ) == 0 ) |
---|
624 | { |
---|
625 | if( argc != 3 ) |
---|
626 | { |
---|
627 | printf(" usage: display fbf pid\n" |
---|
628 | " display fbf 0 (all processes)"); |
---|
629 | } |
---|
630 | else |
---|
631 | { |
---|
632 | unsigned int pid = atoi(argv[2]); |
---|
633 | |
---|
634 | if( display_fbf_windows( pid ) ) |
---|
635 | { |
---|
636 | printf(" error: cannot found process %x\n", pid ); |
---|
637 | } |
---|
638 | } |
---|
639 | } |
---|
640 | //// |
---|
641 | else |
---|
642 | { |
---|
643 | printf(" error: undefined display request : %s\n", argv[1] ); |
---|
644 | } |
---|
645 | |
---|
646 | // release semaphore to get next command |
---|
647 | sem_post( &semaphore ); |
---|
648 | |
---|
649 | } // end cmd_display() |
---|
650 | |
---|
651 | ///////////////////////////////////////// |
---|
652 | static void cmd_fg(int argc, char **argv) |
---|
653 | { |
---|
654 | unsigned int pid; |
---|
655 | |
---|
656 | if (argc != 2) |
---|
657 | { |
---|
658 | printf(" usage: fg pid\n"); |
---|
659 | } |
---|
660 | else |
---|
661 | { |
---|
662 | pid = atoi( argv[1] ); |
---|
663 | |
---|
664 | if( pid == 0 ) |
---|
665 | { |
---|
666 | printf(" error: PID cannot be 0\n" ); |
---|
667 | } |
---|
668 | else if( fg( pid ) ) |
---|
669 | { |
---|
670 | printf(" error: cannot find process %x\n", pid ); |
---|
671 | } |
---|
672 | } |
---|
673 | |
---|
674 | // release semaphore to get next command |
---|
675 | sem_post( &semaphore ); |
---|
676 | |
---|
677 | } // end cmd_fg() |
---|
678 | |
---|
679 | ////////////////////////////////////////////// |
---|
680 | static void cmd_help( int argc , char **argv ) |
---|
681 | { |
---|
682 | unsigned int i; |
---|
683 | |
---|
684 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
685 | { |
---|
686 | printf(" usage: help\n"); |
---|
687 | } |
---|
688 | else |
---|
689 | { |
---|
690 | printf("available commands:\n"); |
---|
691 | for (i = 0 ; command[i].name ; i++) |
---|
692 | { |
---|
693 | printf("\t%s\t : %s\n", command[i].name , command[i].desc); |
---|
694 | } |
---|
695 | } |
---|
696 | |
---|
697 | // release semaphore to get next command |
---|
698 | sem_post( &semaphore ); |
---|
699 | |
---|
700 | } // end cmd_help() |
---|
701 | |
---|
702 | ///////////////////////////////////////////////// |
---|
703 | static void cmd_history( int argc , char **argv ) |
---|
704 | { |
---|
705 | unsigned int i; |
---|
706 | |
---|
707 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
708 | { |
---|
709 | printf(" usage: history\n"); |
---|
710 | } |
---|
711 | else |
---|
712 | { |
---|
713 | printf("--- registered commands ---\n"); |
---|
714 | for (i = 0; i < LOG_DEPTH; i++) |
---|
715 | { |
---|
716 | printf(" - %d\t: %s\n", i, &log_entries[i].buf); |
---|
717 | } |
---|
718 | } |
---|
719 | |
---|
720 | // release semaphore to get next command |
---|
721 | sem_post( &semaphore ); |
---|
722 | |
---|
723 | } // end cmd_history() |
---|
724 | |
---|
725 | ////////////////////////////////////////////// |
---|
726 | static void cmd_kill( int argc , char **argv ) |
---|
727 | { |
---|
728 | unsigned int pid; |
---|
729 | |
---|
730 | if (argc != 2) |
---|
731 | { |
---|
732 | printf(" usage: kill pid\n", argv[0]); |
---|
733 | } |
---|
734 | else |
---|
735 | { |
---|
736 | pid = atoi( argv[1] ); |
---|
737 | |
---|
738 | if( pid == 0 ) |
---|
739 | { |
---|
740 | printf(" error: kernel process 0 cannot be killed\n" ); |
---|
741 | } |
---|
742 | |
---|
743 | else if( kill( pid , SIGKILL ) ) |
---|
744 | { |
---|
745 | printf(" error: process %x cannot be killed\n", pid ); |
---|
746 | } |
---|
747 | } |
---|
748 | |
---|
749 | // release semaphore to get next command |
---|
750 | sem_post( &semaphore ); |
---|
751 | |
---|
752 | } // end cmd_kill() |
---|
753 | |
---|
754 | ////////////////////////////////////////////// |
---|
755 | static void cmd_load( int argc , char **argv ) |
---|
756 | { |
---|
757 | int ret_fork; // return value from fork |
---|
758 | int ret_exec; // return value from exec |
---|
759 | unsigned int cmd_ok; // command arguments acceptable |
---|
760 | unsigned int background; // background execution if non zero |
---|
761 | unsigned int place; // user placement if non zero |
---|
762 | char * arg[5]; // array of pointers on main thread arguments |
---|
763 | unsigned int args_nr; // number of aruments in this array |
---|
764 | |
---|
765 | char undef[] = { "undefined" }; |
---|
766 | |
---|
767 | // arguments analysis of argv[] array that contains at most 8 strings: |
---|
768 | // - the two first arguments ("cmd_type" & "elf_path") are mandatory |
---|
769 | // - the six next ("-pcxy","arg0","arg1","arg2","arg3","&") are optional |
---|
770 | |
---|
771 | // analyse the optional arguments |
---|
772 | if( argc == 2 ) // no optional arguments |
---|
773 | { |
---|
774 | cmd_ok = 1; |
---|
775 | background = 0; |
---|
776 | place = 0; |
---|
777 | arg[0] = undef; |
---|
778 | arg[1] = undef; |
---|
779 | arg[2] = undef; |
---|
780 | arg[3] = undef; |
---|
781 | args_nr = 0; |
---|
782 | } |
---|
783 | else if( ((argc >= 4) && (argc <= 8)) && |
---|
784 | (argv[2][0] == '-') && (argv[2][1] == 'p') && |
---|
785 | (strcmp(argv[argc-1] , "&" ) == 0) ) // background, place, 0 to 4 args |
---|
786 | { |
---|
787 | cmd_ok = 1; |
---|
788 | background = 1; |
---|
789 | place = 0xFF000000 | atoi( argv[2] + 2 ); |
---|
790 | arg[0] = (argc > 4) ? argv[3] : undef; |
---|
791 | arg[1] = (argc > 5) ? argv[4] : undef; |
---|
792 | arg[2] = (argc > 6) ? argv[5] : undef; |
---|
793 | arg[3] = (argc > 7) ? argv[6] : undef; |
---|
794 | args_nr = argc - 4; |
---|
795 | } |
---|
796 | else if( ((argc >= 3) && (argc <= 7)) && |
---|
797 | (argv[2][0] == '-') && (argv[2][1] == 'p') && |
---|
798 | (strcmp(argv[argc-1] , "&" ) != 0) ) // place, no background, 0 to 4 args |
---|
799 | { |
---|
800 | cmd_ok = 1; |
---|
801 | background = 0; |
---|
802 | place = 0xFF000000 | atoi( argv[2] + 2 ); |
---|
803 | arg[0] = (argc > 3) ? argv[3] : undef; |
---|
804 | arg[1] = (argc > 4) ? argv[4] : undef; |
---|
805 | arg[2] = (argc > 5) ? argv[5] : undef; |
---|
806 | arg[3] = (argc > 6) ? argv[6] : undef; |
---|
807 | args_nr = argc - 3; |
---|
808 | } |
---|
809 | else if( ((argc >=3) && (argc <= 7)) && |
---|
810 | ((argv[2][0] != '-') || (argv[2][1] != 'p')) && |
---|
811 | (strcmp(argv[argc-1] , "&" ) == 0) ) // no place, background, 0 to 4 args |
---|
812 | { |
---|
813 | cmd_ok = 1; |
---|
814 | background = 1; |
---|
815 | place = 0; |
---|
816 | arg[0] = (argc > 3) ? argv[2] : undef; |
---|
817 | arg[1] = (argc > 4) ? argv[3] : undef; |
---|
818 | arg[2] = (argc > 5) ? argv[4] : undef; |
---|
819 | arg[3] = (argc > 6) ? argv[5] : undef; |
---|
820 | args_nr = argc - 3; |
---|
821 | } |
---|
822 | else if( (argc >= 3) && (argc <= 6 ) ) // no place, no background, 0 to 4 args |
---|
823 | { |
---|
824 | cmd_ok = 1; |
---|
825 | background = 0; |
---|
826 | place = 0; |
---|
827 | arg[0] = (argc > 2) ? argv[2] : undef; |
---|
828 | arg[1] = (argc > 3) ? argv[3] : undef; |
---|
829 | arg[2] = (argc > 4) ? argv[4] : undef; |
---|
830 | arg[3] = (argc > 5) ? argv[5] : undef; |
---|
831 | args_nr = argc - 2; |
---|
832 | } |
---|
833 | else // illegal optional arguments |
---|
834 | { |
---|
835 | cmd_ok = 0; |
---|
836 | background = 0; |
---|
837 | place = 0; |
---|
838 | arg[0] = undef; |
---|
839 | arg[1] = undef; |
---|
840 | arg[2] = undef; |
---|
841 | arg[3] = undef; |
---|
842 | args_nr = 0; |
---|
843 | } |
---|
844 | |
---|
845 | // check syntax errors |
---|
846 | if( cmd_ok == 0 ) |
---|
847 | { |
---|
848 | printf(" usage: load elf_path [-pcxy] [arg0] [arg1] [arg2] [arg3] [&]\n"); |
---|
849 | |
---|
850 | // release semaphore to get next command |
---|
851 | sem_post( &semaphore ); |
---|
852 | |
---|
853 | return; |
---|
854 | } |
---|
855 | |
---|
856 | // get elf_path |
---|
857 | strcpy( elf_path , argv[1] ); |
---|
858 | |
---|
859 | #if DEBUG_CMD_LOAD |
---|
860 | printf("\n[ksh] %s : path <%s> / place %x / args_nr %d / bg %d\n" |
---|
861 | " arg0 %s / arg1 %s / arg2 %s / arg3 %s\n", |
---|
862 | __FUNCTION__, elf_path , place , args_nr , background , arg[0] , arg[1] , arg[2] , arg[3] ); |
---|
863 | #endif |
---|
864 | |
---|
865 | // set NULL pointers in args[] array |
---|
866 | if ( arg[0] == undef ) arg[0] = NULL; |
---|
867 | else if( arg[1] == undef ) arg[1] = NULL; |
---|
868 | else if( arg[2] == undef ) arg[2] = NULL; |
---|
869 | else if( arg[3] == undef ) arg[3] = NULL; |
---|
870 | else arg[4] = NULL; |
---|
871 | |
---|
872 | // set target cluster if required |
---|
873 | if( place ) place_fork( place & 0xFFFF ); |
---|
874 | |
---|
875 | // KSH process fork CHILD process |
---|
876 | ret_fork = fork(); |
---|
877 | |
---|
878 | if ( ret_fork < 0 ) // it is a failure reported to KSH |
---|
879 | { |
---|
880 | printf(" error: ksh process unable to fork\n"); |
---|
881 | } |
---|
882 | else if (ret_fork == 0) // it is the CHILD process |
---|
883 | { |
---|
884 | |
---|
885 | #if DEBUG_CMD_LOAD |
---|
886 | printf("\n[ksh] %s : child (pid %x) after fork, before exec\n", |
---|
887 | __FUNCTION__ , getpid() ); |
---|
888 | #endif |
---|
889 | |
---|
890 | // CHILD process exec NEW process |
---|
891 | ret_exec = execve( elf_path , arg , NULL ); |
---|
892 | |
---|
893 | #if DEBUG_CMD_LOAD |
---|
894 | printf("\n[ksh] %s : child (pid %x) after exec / ret_exec %x\n", |
---|
895 | __FUNCTION__, getpid(), ret_exec ); |
---|
896 | #endif |
---|
897 | |
---|
898 | // this is only executed in case of exec failure |
---|
899 | if( ret_exec ) |
---|
900 | { |
---|
901 | printf(" error: child process unable to exec <%s>\n", pathname ); |
---|
902 | exit( 0 ); |
---|
903 | } |
---|
904 | } |
---|
905 | else // it is the KSH process : ret_fork is the new process PID |
---|
906 | { |
---|
907 | |
---|
908 | #if DEBUG_CMD_LOAD |
---|
909 | printf("\n[ksh] %s : ksh (pid %x) after fork / ret_fork %x\n", |
---|
910 | __FUNCTION__, getpid(), ret_fork ); |
---|
911 | #endif |
---|
912 | // when the new process is launched in background, the KSH process |
---|
913 | // takes the TXT ownership, and releases the semaphore to get the next command. |
---|
914 | // Otherwise, the child process keep the TXT ownership, and the semaphore will |
---|
915 | // be released by the KSH main thread when the child process exit |
---|
916 | |
---|
917 | if( background ) // KSH must keep TXT ownership |
---|
918 | { |
---|
919 | // KSH get back the TXT ownership |
---|
920 | fg( getpid() ); |
---|
921 | |
---|
922 | // release semaphore to get next command |
---|
923 | sem_post( &semaphore ); |
---|
924 | } |
---|
925 | } |
---|
926 | } // end cmd_load |
---|
927 | |
---|
928 | //////////////////////////////////////////// |
---|
929 | static void cmd_ls( int argc , char **argv ) |
---|
930 | { |
---|
931 | struct dirent * entry; |
---|
932 | DIR * dir; |
---|
933 | |
---|
934 | #if DEBUG_CMD_LS |
---|
935 | printf("\n[ksh] enter %s" , __FUNCTION__); |
---|
936 | #endif |
---|
937 | |
---|
938 | if (argc > 2 ) |
---|
939 | { |
---|
940 | printf(" usage: ls [path]\n"); |
---|
941 | } |
---|
942 | else |
---|
943 | { |
---|
944 | // handle case with no argument |
---|
945 | |
---|
946 | // get target directory path |
---|
947 | if ( argc == 1 ) strcpy( pathname , "." ); |
---|
948 | else strcpy( pathname , argv[1] ); |
---|
949 | |
---|
950 | // open target directory |
---|
951 | dir = opendir( pathname ); |
---|
952 | |
---|
953 | #if DEBUG_CMD_LS |
---|
954 | printf("\n[ksh] %s : directory <%s> open / DIR %x", __FUNCTION__, pathname , dir ); |
---|
955 | #endif |
---|
956 | |
---|
957 | if( dir == NULL) |
---|
958 | { |
---|
959 | printf(" error : directory <%s> not found\n", pathname ); |
---|
960 | |
---|
961 | sem_post( &semaphore ); |
---|
962 | return; |
---|
963 | } |
---|
964 | |
---|
965 | // loop on directory entries |
---|
966 | while ( (entry = readdir(dir)) != NULL ) |
---|
967 | { |
---|
968 | printf("%s\n", entry->d_name); |
---|
969 | } |
---|
970 | |
---|
971 | // close target directory |
---|
972 | closedir( dir ); |
---|
973 | |
---|
974 | #if DEBUG_CMD_LS |
---|
975 | printf("\n[ksh] %s : directory <%s> closed", __FUNCTION__, pathname ); |
---|
976 | #endif |
---|
977 | |
---|
978 | } |
---|
979 | |
---|
980 | // release semaphore to get next command |
---|
981 | sem_post( &semaphore ); |
---|
982 | |
---|
983 | } // end cmd_ls() |
---|
984 | |
---|
985 | /////////////////////////////////////////////// |
---|
986 | static void cmd_mkdir( int argc , char **argv ) |
---|
987 | { |
---|
988 | if (argc != 2) |
---|
989 | { |
---|
990 | printf(" usage: mkdir pathname\n"); |
---|
991 | } |
---|
992 | else |
---|
993 | { |
---|
994 | strcpy( pathname , argv[1] ); |
---|
995 | |
---|
996 | mkdir( pathname , 0x777 ); |
---|
997 | } |
---|
998 | |
---|
999 | // release semaphore to get next command |
---|
1000 | sem_post( &semaphore ); |
---|
1001 | |
---|
1002 | } // end cmd_mkdir() |
---|
1003 | |
---|
1004 | //////////////////////////////////////////// |
---|
1005 | static void cmd_mv( int argc , char **argv ) |
---|
1006 | { |
---|
1007 | if (argc != 3) |
---|
1008 | { |
---|
1009 | printf(" usage: mv old_pathname new_pathname\n"); |
---|
1010 | } |
---|
1011 | else |
---|
1012 | { |
---|
1013 | strcpy( pathname , argv[1] ); |
---|
1014 | strcpy( pathnew , argv[2] ); |
---|
1015 | |
---|
1016 | // call the relevant syscall |
---|
1017 | if( rename( pathname , pathnew ) ) |
---|
1018 | { |
---|
1019 | printf(" error: unable to rename <%s> to <%s>\n", pathname , pathnew ); |
---|
1020 | } |
---|
1021 | } |
---|
1022 | |
---|
1023 | // release semaphore to get next command |
---|
1024 | sem_post( &semaphore ); |
---|
1025 | |
---|
1026 | } // end cmd_mv |
---|
1027 | |
---|
1028 | |
---|
1029 | //////////////////////////////////////////// |
---|
1030 | static void cmd_ps( int argc , char **argv ) |
---|
1031 | { |
---|
1032 | unsigned int x_size; |
---|
1033 | unsigned int y_size; |
---|
1034 | unsigned int x; |
---|
1035 | unsigned int y; |
---|
1036 | |
---|
1037 | #if DEBUG_CMD_PS |
---|
1038 | printf("\n[ksh] enter %s" , __FUNCTION__); |
---|
1039 | #endif |
---|
1040 | |
---|
1041 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
1042 | { |
---|
1043 | printf(" usage: ps\n"); |
---|
1044 | } |
---|
1045 | else |
---|
1046 | { |
---|
1047 | // get platform config |
---|
1048 | hard_config_t config; |
---|
1049 | get_config( &config ); |
---|
1050 | x_size = config.x_size; |
---|
1051 | y_size = config.y_size; |
---|
1052 | |
---|
1053 | // scan all clusters |
---|
1054 | for( x = 0 ; x < x_size ; x++ ) |
---|
1055 | { |
---|
1056 | for( y = 0 ; y < y_size ; y++ ) |
---|
1057 | { |
---|
1058 | |
---|
1059 | #if DEBUG_CMD_PS |
---|
1060 | printf("\n[ksh] %s : call display_cluster_process()", __FUNCTION__ ); |
---|
1061 | #endif |
---|
1062 | |
---|
1063 | // display only owned processes |
---|
1064 | display_cluster_processes( HAL_CXY_FROM_XY(x,y), 1 ); |
---|
1065 | } |
---|
1066 | } |
---|
1067 | } |
---|
1068 | |
---|
1069 | // release semaphore to get next command |
---|
1070 | sem_post( &semaphore ); |
---|
1071 | |
---|
1072 | } // end cmd_ps() |
---|
1073 | |
---|
1074 | ///////////////////////////////////////////// |
---|
1075 | static void cmd_pwd( int argc , char **argv ) |
---|
1076 | { |
---|
1077 | if( (argc != 1) || (argv[0] == NULL) ) |
---|
1078 | { |
---|
1079 | printf(" usage: pwd\n"); |
---|
1080 | } |
---|
1081 | else |
---|
1082 | { |
---|
1083 | if ( getcwd( pathname , PATH_MAX_SIZE ) ) |
---|
1084 | { |
---|
1085 | printf(" error: unable to get current directory\n"); |
---|
1086 | } |
---|
1087 | else |
---|
1088 | { |
---|
1089 | printf("%s\n", pathname ); |
---|
1090 | } |
---|
1091 | } |
---|
1092 | |
---|
1093 | // release semaphore to get next command |
---|
1094 | sem_post( &semaphore ); |
---|
1095 | |
---|
1096 | } // end cmd_pwd() |
---|
1097 | |
---|
1098 | //////////////////////////////////////////// |
---|
1099 | static void cmd_rm( int argc , char **argv ) |
---|
1100 | { |
---|
1101 | if (argc != 2) |
---|
1102 | { |
---|
1103 | printf(" usage: rm pathname\n"); |
---|
1104 | } |
---|
1105 | else |
---|
1106 | { |
---|
1107 | strcpy( pathname , argv[1] ); |
---|
1108 | |
---|
1109 | if ( unlink( pathname ) ) |
---|
1110 | { |
---|
1111 | printf(" error: unable to remove <%s>\n", pathname ); |
---|
1112 | } |
---|
1113 | } |
---|
1114 | |
---|
1115 | // release semaphore to get next command |
---|
1116 | sem_post( &semaphore ); |
---|
1117 | |
---|
1118 | } // end cmd_rm() |
---|
1119 | |
---|
1120 | /////////////////////////////////////////////// |
---|
1121 | static void cmd_stat( int argc , char **argv ) |
---|
1122 | { |
---|
1123 | struct stat st; |
---|
1124 | unsigned int size; |
---|
1125 | |
---|
1126 | if (argc != 2) |
---|
1127 | { |
---|
1128 | printf(" usage: stat pathname\n"); |
---|
1129 | } |
---|
1130 | else |
---|
1131 | { |
---|
1132 | strcpy( pathname , argv[1] ); |
---|
1133 | |
---|
1134 | if ( stat( pathname , &st ) ) |
---|
1135 | { |
---|
1136 | printf(" error: cannot stat <%s>\n", argv[2] ); |
---|
1137 | } |
---|
1138 | else |
---|
1139 | { |
---|
1140 | // get file size |
---|
1141 | size = st.st_size; |
---|
1142 | |
---|
1143 | // print file stat info |
---|
1144 | printf(" <%s> : %d bytes\n", pathname, size ); |
---|
1145 | } |
---|
1146 | } |
---|
1147 | |
---|
1148 | // release semaphore to get next command |
---|
1149 | sem_post( &semaphore ); |
---|
1150 | |
---|
1151 | } // end cmd_stat() |
---|
1152 | |
---|
1153 | /////////////////////////////////////////////// |
---|
1154 | static void cmd_rmdir( int argc , char **argv ) |
---|
1155 | { |
---|
1156 | if (argc != 2) |
---|
1157 | { |
---|
1158 | printf(" usage: rmdir pathname\n"); |
---|
1159 | } |
---|
1160 | else |
---|
1161 | { |
---|
1162 | strcpy( pathname , argv[1] ); |
---|
1163 | |
---|
1164 | if ( unlink( pathname ) ) |
---|
1165 | { |
---|
1166 | printf(" error: unable to remove <%s>\n", pathname ); |
---|
1167 | } |
---|
1168 | } |
---|
1169 | |
---|
1170 | // release semaphore to get next command |
---|
1171 | sem_post( &semaphore ); |
---|
1172 | |
---|
1173 | } // end cmd_rmdir() |
---|
1174 | |
---|
1175 | /////////////////////////////////////////////// |
---|
1176 | static void cmd_trace( int argc , char **argv ) |
---|
1177 | { |
---|
1178 | unsigned int cxy; |
---|
1179 | unsigned int lid; |
---|
1180 | |
---|
1181 | if (argc != 3) |
---|
1182 | { |
---|
1183 | printf(" usage: trace cxy lid \n"); |
---|
1184 | } |
---|
1185 | else |
---|
1186 | { |
---|
1187 | cxy = atoi(argv[1]); |
---|
1188 | lid = atoi(argv[2]); |
---|
1189 | |
---|
1190 | if( trace( 1 , cxy , lid ) ) |
---|
1191 | { |
---|
1192 | printf(" error: core[%x,%d] not found\n", cxy, lid ); |
---|
1193 | } |
---|
1194 | } |
---|
1195 | |
---|
1196 | // release semaphore to get next command |
---|
1197 | sem_post( &semaphore ); |
---|
1198 | |
---|
1199 | } // end cmd_trace |
---|
1200 | |
---|
1201 | /////////////////////////////////////////////// |
---|
1202 | static void cmd_untrace( int argc , char **argv ) |
---|
1203 | { |
---|
1204 | unsigned int cxy; |
---|
1205 | unsigned int lid; |
---|
1206 | |
---|
1207 | if (argc != 3) |
---|
1208 | { |
---|
1209 | printf(" usage: untrace cxy lid \n"); |
---|
1210 | } |
---|
1211 | else |
---|
1212 | { |
---|
1213 | cxy = atoi(argv[1]); |
---|
1214 | lid = atoi(argv[2]); |
---|
1215 | |
---|
1216 | if( trace( 0 , cxy , lid ) ) |
---|
1217 | { |
---|
1218 | printf(" error: core[%x,%d] not found\n", cxy, lid ); |
---|
1219 | } |
---|
1220 | } |
---|
1221 | |
---|
1222 | // release semaphore to get next command |
---|
1223 | sem_post( &semaphore ); |
---|
1224 | |
---|
1225 | } // end cmd_untrace() |
---|
1226 | |
---|
1227 | /////////////////////////////////////////////////////////////////////////////////// |
---|
1228 | // Array of commands |
---|
1229 | /////////////////////////////////////////////////////////////////////////////////// |
---|
1230 | |
---|
1231 | ksh_cmd_t command[] = |
---|
1232 | { |
---|
1233 | { "cat", "display file content", cmd_cat }, |
---|
1234 | { "cd", "change current directory", cmd_cd }, |
---|
1235 | { "cp", "replicate a file in file system", cmd_cp }, |
---|
1236 | { "fg", "put a process in foreground", cmd_fg }, |
---|
1237 | { "display", "display vmm/sched/process/vfs/chdev/txt", cmd_display }, |
---|
1238 | { "load", "load an user application", cmd_load }, |
---|
1239 | { "help", "list available commands", cmd_help }, |
---|
1240 | { "history", "list registered commands", cmd_history }, |
---|
1241 | { "kill", "kill a process (all threads)", cmd_kill }, |
---|
1242 | { "ls", "list directory entries", cmd_ls }, |
---|
1243 | { "mkdir", "create a new directory", cmd_mkdir }, |
---|
1244 | { "mv", "move a file in file system", cmd_mv }, |
---|
1245 | { "pwd", "print current working directory", cmd_pwd }, |
---|
1246 | { "ps", "display all processes", cmd_ps }, |
---|
1247 | { "rm", "remove a file from file system", cmd_rm }, |
---|
1248 | { "rmdir", "remove a directory from file system", cmd_rmdir }, |
---|
1249 | { "stat", "print infos on a given file", cmd_stat }, |
---|
1250 | { "trace", "activate trace for a given core", cmd_trace }, |
---|
1251 | { "untrace", "desactivate trace for a given core", cmd_untrace }, |
---|
1252 | { NULL, NULL, NULL } |
---|
1253 | }; |
---|
1254 | |
---|
1255 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1256 | // This function analyses one command (with arguments), executes it, and returns. |
---|
1257 | //////////////////////////////////////////////////////////////////////////////////// |
---|
1258 | static void __attribute__ ((noinline)) execute( char * buf ) |
---|
1259 | { |
---|
1260 | int argc = 0; |
---|
1261 | char * argv[MAX_ARGS]; |
---|
1262 | int i; |
---|
1263 | int len = strlen(buf); |
---|
1264 | |
---|
1265 | #if DEBUG_EXECUTE |
---|
1266 | printf("\n[ksh] enter %s for command <%s>" , __FUNCTION__ , buf ); |
---|
1267 | #endif |
---|
1268 | |
---|
1269 | // build argc/argv : |
---|
1270 | // arg[0] is the command type |
---|
1271 | // - other arg[i] are the command arguments |
---|
1272 | |
---|
1273 | for (i = 0; i < len; i++) |
---|
1274 | { |
---|
1275 | // convert SPACE to NUL |
---|
1276 | if (buf[i] == ' ') |
---|
1277 | { |
---|
1278 | buf[i] = '\0'; |
---|
1279 | } |
---|
1280 | else if (i == 0 || buf[i - 1] == '\0') |
---|
1281 | { |
---|
1282 | if (argc < MAX_ARGS) |
---|
1283 | { |
---|
1284 | argv[argc] = &buf[i]; |
---|
1285 | argc++; |
---|
1286 | } |
---|
1287 | } |
---|
1288 | } |
---|
1289 | |
---|
1290 | // check command |
---|
1291 | if (argc == 0) |
---|
1292 | { |
---|
1293 | // release semaphore to get next command |
---|
1294 | sem_post( &semaphore ); |
---|
1295 | } |
---|
1296 | |
---|
1297 | #if DEBUG_EXECUTE |
---|
1298 | printf("\n[ksh] in %s : argc = %d / type = %s", __FUNCTION__ , argc , argv[0] ); |
---|
1299 | #endif |
---|
1300 | |
---|
1301 | // scan the list of commands to match typed command |
---|
1302 | int found = 0; |
---|
1303 | for ( i = 0 ; (command[i].name != NULL) && (found == 0) ; i++ ) |
---|
1304 | { |
---|
1305 | if (strcmp(argv[0], command[i].name) == 0) |
---|
1306 | { |
---|
1307 | command[i].fn(argc, argv); |
---|
1308 | found = 1; |
---|
1309 | } |
---|
1310 | } |
---|
1311 | |
---|
1312 | // check undefined command |
---|
1313 | if (!found) |
---|
1314 | { |
---|
1315 | printf(" error : undefined command <%s>\n", argv[0]); |
---|
1316 | |
---|
1317 | // release semaphore to get next command |
---|
1318 | sem_post( &semaphore ); |
---|
1319 | } |
---|
1320 | } // end execute() |
---|
1321 | |
---|
1322 | |
---|
1323 | |
---|
1324 | /////////////////////////////// |
---|
1325 | static void interactive( void ) |
---|
1326 | { |
---|
1327 | char c; // read character |
---|
1328 | unsigned int end_command; // last character found in a command |
---|
1329 | unsigned int count; // pointer in command buffer |
---|
1330 | unsigned int i; // index for loops |
---|
1331 | unsigned int state; // escape sequence state |
---|
1332 | |
---|
1333 | |
---|
1334 | /* direct command to help debug |
---|
1335 | |
---|
1336 | if( getpid() == 2 ) |
---|
1337 | { |
---|
1338 | if( sem_wait( &semaphore ) ) |
---|
1339 | { |
---|
1340 | printf("\n[ksh %d] error : cannot found semafore\n" ); |
---|
1341 | exit( 1 ); |
---|
1342 | } |
---|
1343 | else |
---|
1344 | { |
---|
1345 | strcpy( cmd , "load bin/user/chat.elf 0" ); |
---|
1346 | printf("[ksh] %s\n", cmd ); |
---|
1347 | execute( cmd ); |
---|
1348 | } |
---|
1349 | } |
---|
1350 | |
---|
1351 | else if( getpid() == 3 ) |
---|
1352 | { |
---|
1353 | if( sem_wait( &semaphore ) ) |
---|
1354 | { |
---|
1355 | printf("\n[ksh %d] error : cannot found semafore\n" ); |
---|
1356 | exit( 1 ); |
---|
1357 | } |
---|
1358 | else |
---|
1359 | { |
---|
1360 | strcpy( cmd , "load bin/user/chat.elf 1" ); |
---|
1361 | printf("[ksh] %s\n", cmd ); |
---|
1362 | execute( cmd ); |
---|
1363 | } |
---|
1364 | } |
---|
1365 | |
---|
1366 | */ |
---|
1367 | |
---|
1368 | enum fsm_states |
---|
1369 | { |
---|
1370 | NORMAL = 0, |
---|
1371 | ESCAPE = 1, |
---|
1372 | BRAKET = 2, |
---|
1373 | }; |
---|
1374 | |
---|
1375 | // This lexical analyser writes one command line in the command buffer. |
---|
1376 | // It is implemented as a 3 states FSM to handle the following escape sequences: |
---|
1377 | // - ESC [ A : up arrow |
---|
1378 | // - ESC [ B : down arrow |
---|
1379 | // - ESC [ C : right arrow |
---|
1380 | // - ESC [ D : left arrow |
---|
1381 | // The three states have the following semantic: |
---|
1382 | // - NORMAL : no (ESC) character has been found |
---|
1383 | // - ESCAPE : the character (ESC) has been found |
---|
1384 | // - BRAKET : the wo characters (ESC,[) have been found |
---|
1385 | |
---|
1386 | // take the semaphore for the first command |
---|
1387 | if ( sem_wait( &semaphore ) ) |
---|
1388 | { |
---|
1389 | printf("\n[ksh error] cannot found semafore\n" ); |
---|
1390 | exit( 1 ); |
---|
1391 | } |
---|
1392 | |
---|
1393 | // display prompt for the first command |
---|
1394 | printf("\n[ksh] "); |
---|
1395 | |
---|
1396 | // external loop on the commands / the interactive thread do not exit this loop |
---|
1397 | while (1) |
---|
1398 | { |
---|
1399 | // initialize command buffer |
---|
1400 | count = 0; |
---|
1401 | state = NORMAL; |
---|
1402 | end_command = 0; |
---|
1403 | |
---|
1404 | // internal loop on characters in one command |
---|
1405 | while( end_command == 0 ) |
---|
1406 | { |
---|
1407 | // get one character from TXT_RX |
---|
1408 | c = (char)getchar(); |
---|
1409 | |
---|
1410 | if( c == 0 ) continue; |
---|
1411 | |
---|
1412 | if( state == NORMAL ) // we are not in an escape sequence |
---|
1413 | { |
---|
1414 | if ((c == '\b') || (c == 0x7F)) // backspace => remove one character |
---|
1415 | { |
---|
1416 | if (count > 0) |
---|
1417 | { |
---|
1418 | printf("\b \b"); |
---|
1419 | count--; |
---|
1420 | } |
---|
1421 | } |
---|
1422 | else if (c == '\n') // new line => end of command |
---|
1423 | { |
---|
1424 | if (count > 0) // analyse & execute command |
---|
1425 | { |
---|
1426 | // complete command with NUL character |
---|
1427 | cmd[count] = 0; |
---|
1428 | count++; |
---|
1429 | |
---|
1430 | // register command in log_entries[] array |
---|
1431 | strncpy( log_entries[ptw].buf , cmd , count ); |
---|
1432 | log_entries[ptw].count = count; |
---|
1433 | ptw = (ptw + 1) % LOG_DEPTH; |
---|
1434 | ptr = ptw; |
---|
1435 | |
---|
1436 | // echo character |
---|
1437 | putchar( c ); |
---|
1438 | |
---|
1439 | // execute command |
---|
1440 | execute( cmd ); |
---|
1441 | } |
---|
1442 | else // no command registered |
---|
1443 | { |
---|
1444 | // release semaphore to get next command |
---|
1445 | sem_post( &semaphore ); |
---|
1446 | } |
---|
1447 | |
---|
1448 | // exit internal loop on characters |
---|
1449 | end_command = 1; |
---|
1450 | } |
---|
1451 | else if (c == '\t') // tabulation => do nothing |
---|
1452 | { |
---|
1453 | } |
---|
1454 | else if (c == (char)0x1B) // ESC => start an escape sequence |
---|
1455 | { |
---|
1456 | state = ESCAPE; |
---|
1457 | } |
---|
1458 | else // normal character |
---|
1459 | { |
---|
1460 | if (count < (sizeof(cmd) - 1) ) |
---|
1461 | { |
---|
1462 | // register character in command buffer |
---|
1463 | cmd[count] = c; |
---|
1464 | count++; |
---|
1465 | |
---|
1466 | // echo character |
---|
1467 | putchar( c ); |
---|
1468 | } |
---|
1469 | else |
---|
1470 | { |
---|
1471 | printf("\none command cannot exceed %d characters\n", sizeof(cmd) ); |
---|
1472 | } |
---|
1473 | } |
---|
1474 | } |
---|
1475 | else if( state == ESCAPE ) |
---|
1476 | { |
---|
1477 | if (c == '[') // valid sequence => continue |
---|
1478 | { |
---|
1479 | state = BRAKET; |
---|
1480 | } |
---|
1481 | else // invalid sequence => do nothing |
---|
1482 | { |
---|
1483 | state = NORMAL; |
---|
1484 | } |
---|
1485 | } |
---|
1486 | else if( state == BRAKET ) |
---|
1487 | { |
---|
1488 | if (c == 'D') // valid LEFT sequence => move cmd pointer left |
---|
1489 | { |
---|
1490 | if (count > 0) |
---|
1491 | { |
---|
1492 | printf("\b"); |
---|
1493 | count--; |
---|
1494 | } |
---|
1495 | |
---|
1496 | // get next user char |
---|
1497 | state = NORMAL; |
---|
1498 | } |
---|
1499 | else if (c == 'C') // valid RIGHT sequence => move cmd pointer right |
---|
1500 | { |
---|
1501 | if (count < sizeof(cmd) - 1) |
---|
1502 | { |
---|
1503 | printf("%c", cmd[count]); |
---|
1504 | count++; |
---|
1505 | } |
---|
1506 | |
---|
1507 | // get next user char |
---|
1508 | state = NORMAL; |
---|
1509 | } |
---|
1510 | else if (c == 'A') // valid UP sequence => move log pointer backward |
---|
1511 | { |
---|
1512 | // cancel current command |
---|
1513 | for (i = 0; i < count; i++) printf("\b \b"); |
---|
1514 | count = 0; |
---|
1515 | |
---|
1516 | // copy log command into cmd |
---|
1517 | ptr = (ptr - 1) % LOG_DEPTH; |
---|
1518 | strcpy(cmd, log_entries[ptr].buf); |
---|
1519 | count = log_entries[ptr].count - 1; |
---|
1520 | |
---|
1521 | // display log command |
---|
1522 | printf("%s", cmd); |
---|
1523 | |
---|
1524 | // get next user char |
---|
1525 | state = NORMAL; |
---|
1526 | } |
---|
1527 | else if (c == 'B') // valid DOWN sequence => move log pointer forward |
---|
1528 | { |
---|
1529 | // cancel current command |
---|
1530 | for (i = 0 ; i < count; i++) printf("\b \b"); |
---|
1531 | count = 0; |
---|
1532 | |
---|
1533 | // copy log command into cmd |
---|
1534 | ptr = (ptr + 1) % LOG_DEPTH; |
---|
1535 | strcpy(cmd, log_entries[ptr].buf); |
---|
1536 | count = log_entries[ptr].count; |
---|
1537 | |
---|
1538 | // display log command |
---|
1539 | printf("%s", cmd); |
---|
1540 | |
---|
1541 | // get next user char |
---|
1542 | state = NORMAL; |
---|
1543 | } |
---|
1544 | else // other character => do nothing |
---|
1545 | { |
---|
1546 | // get next user char |
---|
1547 | state = NORMAL; |
---|
1548 | } |
---|
1549 | } |
---|
1550 | } // end internal while loop on characters |
---|
1551 | |
---|
1552 | // block interactive thread if KSH loose TXT ownership |
---|
1553 | if ( sem_wait( &semaphore ) ) |
---|
1554 | { |
---|
1555 | printf("\n[ksh error] cannot found semafore\n" ); |
---|
1556 | exit( 1 ); |
---|
1557 | } |
---|
1558 | |
---|
1559 | // display prompt for next command |
---|
1560 | printf("\n[ksh] "); |
---|
1561 | |
---|
1562 | } // end external while loop on commands |
---|
1563 | |
---|
1564 | } // end interactive() |
---|
1565 | |
---|
1566 | //////////////// |
---|
1567 | int main( void ) |
---|
1568 | { |
---|
1569 | unsigned int cxy; // owner cluster identifier for this KSH process |
---|
1570 | unsigned int lid; // core identifier for this KSH main thread |
---|
1571 | int status; // child process termination status |
---|
1572 | int parent_pid; // parent process identifier (i.e. this process) |
---|
1573 | int child_pid; // child process identifier |
---|
1574 | unsigned int is_owner; // non-zero if KSH process is TXT owner |
---|
1575 | |
---|
1576 | // initialize log buffer |
---|
1577 | memset( &log_entries , 0, sizeof(log_entries)); |
---|
1578 | ptw = 0; |
---|
1579 | ptr = 0; |
---|
1580 | |
---|
1581 | // get KSH process pid and core |
---|
1582 | parent_pid = getpid(); |
---|
1583 | get_core_id( &cxy , &lid ); |
---|
1584 | |
---|
1585 | #if DEBUG_MAIN |
---|
1586 | printf("\n[ksh] main started on core[%x,%d]", cxy , lid ); |
---|
1587 | #endif |
---|
1588 | |
---|
1589 | // initializes the semaphore used to synchronize with interactive thread |
---|
1590 | if ( sem_init( &semaphore , 0 , 1 ) ) |
---|
1591 | { |
---|
1592 | printf("\n[KSH ERROR] cannot initialize semaphore\n" ); |
---|
1593 | exit( 1 ); |
---|
1594 | } |
---|
1595 | |
---|
1596 | #if DEBUG_MAIN |
---|
1597 | printf("\n[ksh] main initialized semaphore" ); |
---|
1598 | #endif |
---|
1599 | |
---|
1600 | // initialize interactive thread attributes |
---|
1601 | attr.attributes = PT_ATTR_DETACH | PT_ATTR_CLUSTER_DEFINED; |
---|
1602 | attr.cxy = cxy; |
---|
1603 | |
---|
1604 | // lauch the interactive thread |
---|
1605 | pthread_create( &trdid, |
---|
1606 | &attr, |
---|
1607 | &interactive, // entry function |
---|
1608 | NULL ); |
---|
1609 | #if DEBUG_MAIN |
---|
1610 | printf("\n[ksh] main thread launched interactive thread %x", trdid ); |
---|
1611 | #endif |
---|
1612 | |
---|
1613 | // signal INIT process |
---|
1614 | kill( 1 , SIGCONT ); |
---|
1615 | |
---|
1616 | // enter infinite loop monitoring children processes termination |
---|
1617 | while( 1 ) |
---|
1618 | { |
---|
1619 | // wait children termination |
---|
1620 | child_pid = wait( &status ); |
---|
1621 | |
---|
1622 | if( DEBUG_MAIN ) |
---|
1623 | { |
---|
1624 | if(WIFEXITED (status)) printf("\n[ksh] child process %x exit\n" ,child_pid); |
---|
1625 | if(WIFSIGNALED(status)) printf("\n[ksh] child process %x killed\n" ,child_pid); |
---|
1626 | if(WIFSTOPPED (status)) printf("\n[ksh] child process %x stopped\n",child_pid); |
---|
1627 | } |
---|
1628 | |
---|
1629 | // release semaphore if KSH process is TXT owner, to unblock interactive thread |
---|
1630 | is_fg( parent_pid , &is_owner ); |
---|
1631 | if( is_owner ) sem_post( &semaphore ); |
---|
1632 | } |
---|
1633 | } // end main() |
---|
1634 | |
---|
1635 | |
---|