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1.1 root 1: /*
2:
3: Copyright 1991,1992 Eric R. Smith. All rights reserved.
4:
5: */
6:
7:
8:
9: #ifndef _filesys_h
10:
11: #define _filesys_h
12:
13:
14:
15: struct filesys; /* forward declaration */
16:
17: struct devdrv; /* ditto */
18:
19:
20:
21: typedef struct f_cookie {
22:
23: struct filesys *fs; /* filesystem that knows about this cookie */
24:
25: ushort dev; /* device info (e.g. Rwabs device number) */
26:
27: ushort aux; /* extra data that the file system may want */
28:
29: long index; /* this+dev uniquely identifies a file */
30:
31: } fcookie;
32:
33:
34:
35: #define TOS_NAMELEN 13
36:
37:
38:
39: typedef struct dtabuf {
40:
41: short index; /* index into arrays in the PROC struct */
42:
43: long magic;
44:
45: #define SVALID 0x1234fedc /* magic for a valid search */
46:
47: #define EVALID 0x5678ba90 /* magic for an exhausted search */
48:
49:
50:
51: char dta_pat[TOS_NAMELEN+1]; /* pointer to pattern, if necessary */
52:
53: char dta_sattrib; /* attributes being searched for */
54:
55: /* this stuff is returned to the user */
56:
57: char dta_attrib;
58:
59: short dta_time;
60:
61: short dta_date;
62:
63: long dta_size;
64:
65: char dta_name[TOS_NAMELEN];
66:
67: } DTABUF;
68:
69:
70:
71: /* structure for opendir/readdir/closedir */
72:
73: typedef struct dirstruct {
74:
75: fcookie fc; /* cookie for this directory */
76:
77: ushort index; /* index of the current entry */
78:
79: ushort flags; /* flags (e.g. tos or not) */
80:
81: #define TOS_SEARCH 0x01
82:
83: char fsstuff[60]; /* anything else the file system wants */
84:
85: /* NOTE: this must be at least 45 bytes */
86:
87: } DIR;
88:
89:
90:
91: /* structure for getxattr */
92:
93: typedef struct xattr {
94:
95: ushort mode;
96:
97: /* file types */
98:
99: #define S_IFMT 0170000 /* mask to select file type */
100:
101: #define S_IFCHR 0020000 /* BIOS special file */
102:
103: #define S_IFDIR 0040000 /* directory file */
104:
105: #define S_IFREG 0100000 /* regular file */
106:
107: #define S_IFIFO 0120000 /* FIFO */
108:
109: #define S_IMEM 0140000 /* memory region or process */
110:
111: #define S_IFLNK 0160000 /* symbolic link */
112:
113:
114:
115: /* special bits: setuid, setgid, sticky bit */
116:
117: #define S_ISUID 04000
118:
119: #define S_ISGID 02000
120:
121: #define S_ISVTX 01000
122:
123:
124:
125: /* file access modes for user, group, and other*/
126:
127: #define S_IRUSR 0400
128:
129: #define S_IWUSR 0200
130:
131: #define S_IXUSR 0100
132:
133: #define S_IRGRP 0040
134:
135: #define S_IWGRP 0020
136:
137: #define S_IXGRP 0010
138:
139: #define S_IROTH 0004
140:
141: #define S_IWOTH 0002
142:
143: #define S_IXOTH 0001
144:
145: #define DEFAULT_DIRMODE (0777)
146:
147: #define DEFAULT_MODE (0666)
148:
149: long index;
150:
151: ushort dev;
152:
153: ushort reserved1;
154:
155: ushort nlink;
156:
157: ushort uid;
158:
159: ushort gid;
160:
161: long size;
162:
163: long blksize;
164:
165: long nblocks;
166:
167: short mtime, mdate;
168:
169: short atime, adate;
170:
171: short ctime, cdate;
172:
173: short attr;
174:
175: /* defines for TOS attribute bytes */
176:
177: #ifndef FA_RDONLY
178:
179: #define FA_RDONLY 0x01
180:
181: #define FA_HIDDEN 0x02
182:
183: #define FA_SYSTEM 0x04
184:
185: #define FA_LABEL 0x08
186:
187: #define FA_DIR 0x10
188:
189: #define FA_CHANGED 0x20
190:
191: #endif
192:
193: short reserved2;
194:
195: long reserved3[2];
196:
197: } XATTR;
198:
199:
200:
201: typedef struct fileptr {
202:
203: short links; /* number of copies of this descriptor */
204:
205: ushort flags; /* file open mode and other file flags */
206:
207: long pos; /* position in file */
208:
209: long devinfo; /* device driver specific info */
210:
211: fcookie fc; /* file system cookie for this file */
212:
213: struct devdrv *dev; /* device driver that knows how to deal with this */
214:
215: struct fileptr *next; /* link to next fileptr for this file */
216:
217: } FILEPTR;
218:
219:
220:
221: struct flock {
222:
223: short l_type; /* type of lock */
224:
225: #define F_RDLCK 0
226:
227: #define F_WRLCK 1
228:
229: #define F_UNLCK 3
230:
231: short l_whence; /* SEEK_SET, SEEK_CUR, SEEK_END */
232:
233: long l_start; /* start of locked region */
234:
235: long l_len; /* length of locked region */
236:
237: short l_pid; /* pid of locking process
238:
239: (F_GETLK only) */
240:
241: };
242:
243:
244:
245: /* structure for internal kernel locks */
246:
247: typedef struct ilock {
248:
249: struct flock l; /* the actual lock */
250:
251: struct ilock *next; /* next lock in the list */
252:
253: long reserved[4]; /* reserved for future expansion */
254:
255: } LOCK;
256:
257:
258:
259: typedef struct devdrv {
260:
261: long (*open) P_((FILEPTR *f));
262:
263: long (*write) P_((FILEPTR *f, const char *buf, long bytes));
264:
265: long (*read) P_((FILEPTR *f, char *buf, long bytes));
266:
267: long (*lseek) P_((FILEPTR *f, long where, int whence));
268:
269: long (*ioctl) P_((FILEPTR *f, int mode, void *buf));
270:
271: long (*datime) P_((FILEPTR *f, short *timeptr, int rwflag));
272:
273: long (*close) P_((FILEPTR *f, int pid));
274:
275: long (*select) P_((FILEPTR *f, long proc, int mode));
276:
277: void (*unselect) P_((FILEPTR *f, long proc, int mode));
278:
279: } DEVDRV;
280:
281:
282:
283: typedef struct filesys {
284:
285: struct filesys *next; /* link to next file system on chain */
286:
287: long fsflags;
288:
289: #define FS_KNOPARSE 0x01 /* kernel shouldn't do parsing */
290:
291: #define FS_CASESENSITIVE 0x02 /* file names are case sensitive */
292:
293: #define FS_NOXBIT 0x04 /* if a file can be read, it can be executed */
294:
295:
296:
297: long (*root) P_((int drv, fcookie *fc));
298:
299: long (*lookup) P_((fcookie *dir, const char *name, fcookie *fc));
300:
301: long (*creat) P_((fcookie *dir, const char *name, unsigned mode,
302:
303: int attrib, fcookie *fc));
304:
305: DEVDRV *(*getdev) P_((fcookie *fc, long *devspecial));
306:
307: long (*getxattr) P_((fcookie *file, XATTR *xattr));
308:
309: long (*chattr) P_((fcookie *file, int attr));
310:
311: long (*chown) P_((fcookie *file, int uid, int gid));
312:
313: long (*chmode) P_((fcookie *file, unsigned mode));
314:
315: long (*mkdir) P_((fcookie *dir, const char *name, unsigned mode));
316:
317: long (*rmdir) P_((fcookie *dir, const char *name));
318:
319: long (*remove) P_((fcookie *dir, const char *name));
320:
321: long (*getname) P_((fcookie *relto, fcookie *dir, char *pathname));
322:
323: long (*rename) P_((fcookie *olddir, char *oldname,
324:
325: fcookie *newdir, const char *newname));
326:
327: long (*opendir) P_((DIR *dirh, int tosflag));
328:
329: long (*readdir) P_((DIR *dirh, char *name, int namelen, fcookie *fc));
330:
331: long (*rewinddir) P_((DIR *dirh));
332:
333: long (*closedir) P_((DIR *dirh));
334:
335: long (*pathconf) P_((fcookie *dir, int which));
336:
337: long (*dfree) P_((fcookie *dir, long *buf));
338:
339: long (*writelabel) P_((fcookie *dir, const char *name));
340:
341: long (*readlabel) P_((fcookie *dir, char *name, int namelen));
342:
343: long (*symlink) P_((fcookie *dir, const char *name, const char *to));
344:
345: long (*readlink) P_((fcookie *dir, char *buf, int len));
346:
347: long (*hardlink) P_((fcookie *fromdir, const char *fromname,
348:
349: fcookie *todir, const char *toname));
350:
351: long (*fscntl) P_((fcookie *dir, const char *name, int cmd, long arg));
352:
353: long (*dskchng) P_((int drv));
354:
355: long zero;
356:
357: } FILESYS;
358:
359:
360:
361: /*
362:
363: * this is the structure passed to loaded file systems to tell them
364:
365: * about the kernel
366:
367: */
368:
369:
370:
371: struct kerinfo {
372:
373: short maj_version; /* kernel version number */
374:
375: short min_version; /* minor kernel version number */
376:
377: ushort default_perm; /* default file permissions */
378:
379: short reserved1; /* room for expansion */
380:
381:
382:
383: /* OS functions */
384:
385: Func *bios_tab; /* pointer to the BIOS entry points */
386:
387: Func *dos_tab; /* pointer to the GEMDOS entry points */
388:
389:
390:
391: /* media change vector */
392:
393: void (*drvchng) P_((unsigned));
394:
395:
396:
397: /* Debugging stuff */
398:
399: void (*trace) P_((const char *, ...));
400:
401: void (*debug) P_((const char *, ...));
402:
403: void (*alert) P_((const char *, ...));
404:
405: EXITING void (*fatal) P_((const char *, ...));
406:
407:
408:
409: /* memory allocation functions */
410:
411: void * (*kmalloc) P_((long));
412:
413: void (*kfree) P_((void *));
414:
415: void * (*umalloc) P_((long));
416:
417: void (*ufree) P_((void *));
418:
419:
420:
421: /* utility functions for string manipulation */
422:
423: int (*strnicmp) P_((const char *, const char *, int));
424:
425: int (*stricmp) P_((const char *, const char *));
426:
427: char * (*strlwr) P_((char *));
428:
429: char * (*strupr) P_((char *));
430:
431: int (*sprintf) P_((char *, const char *, ...));
432:
433:
434:
435: /* utility functions for manipulating time */
436:
437: void (*millis_time) P_((unsigned long, short *));
438:
439: long (*unixtim) P_((unsigned, unsigned));
440:
441: long (*dostim) P_((long));
442:
443:
444:
445: /* utility functions for dealing with pauses, or for putting processes
446:
447: * to sleep
448:
449: */
450:
451: void (*nap) P_((unsigned));
452:
453: void (*sleep) P_((int que, long cond));
454:
455: void (*wake) P_((int que, long cond));
456:
457: void (*wakeselect) P_((long param));
458:
459:
460:
461: /* file system utility functions */
462:
463: int (*denyshare) P_((FILEPTR *, FILEPTR *));
464:
465:
466:
467: /* reserved for future use */
468:
469: LOCK * (*denylock) P_((LOCK *, LOCK *));
470:
471: long res2[9];
472:
473: };
474:
475:
476:
477: /* flags for open() modes */
478:
479: #define O_RWMODE 0x03 /* isolates file read/write mode */
480:
481: # define O_RDONLY 0x00
482:
483: # define O_WRONLY 0x01
484:
485: # define O_RDWR 0x02
486:
487: # define O_EXEC 0x03 /* execute file; used by kernel only */
488:
489:
490:
491: /* 0x04 is for future expansion */
492:
493: #define O_APPEND 0x08 /* all writes go to end of file */
494:
495:
496:
497: #define O_SHMODE 0x70 /* isolates file sharing mode */
498:
499: # define O_COMPAT 0x00 /* compatibility mode */
500:
501: # define O_DENYRW 0x10 /* deny both read and write access */
502:
503: # define O_DENYW 0x20 /* deny write access to others */
504:
505: # define O_DENYR 0x30 /* deny read access to others */
506:
507: # define O_DENYNONE 0x40 /* don't deny any access to others */
508:
509:
510:
511: #define O_NOINHERIT 0x80 /* private file (not passed to child) */
512:
513:
514:
515: #define O_NDELAY 0x100 /* don't block for i/o on this file */
516:
517: #define O_CREAT 0x200 /* create file if it doesn't exist */
518:
519: #define O_TRUNC 0x400 /* truncate file to 0 bytes if it does exist */
520:
521: #define O_EXCL 0x800 /* fail open if file exists */
522:
523:
524:
525: #define O_USER 0x0fff /* isolates user-settable flag bits */
526:
527:
528:
529: #define O_GLOBAL 0x1000 /* for opening a global file */
530:
531:
532:
533: /* kernel mode bits -- the user can't set these! */
534:
535: #define O_TTY 0x2000
536:
537: #define O_HEAD 0x4000
538:
539: #define O_LOCK 0x8000
540:
541:
542:
543: /* GEMDOS file attributes */
544:
545:
546:
547: /* macros to be applied to FILEPTRS to determine their type */
548:
549: #define is_terminal(f) (f->flags & O_TTY)
550:
551:
552:
553: /* lseek() origins */
554:
555: #define SEEK_SET 0 /* from beginning of file */
556:
557: #define SEEK_CUR 1 /* from current location */
558:
559: #define SEEK_END 2 /* from end of file */
560:
561:
562:
563: /* The requests for Dpathconf() */
564:
565: #define DP_IOPEN 0 /* internal limit on # of open files */
566:
567: #define DP_MAXLINKS 1 /* max number of hard links to a file */
568:
569: #define DP_PATHMAX 2 /* max path name length */
570:
571: #define DP_NAMEMAX 3 /* max length of an individual file name */
572:
573: #define DP_ATOMIC 4 /* # of bytes that can be written atomically */
574:
575: #define DP_TRUNC 5 /* file name truncation behavior */
576:
577: # define DP_NOTRUNC 0 /* long filenames give an error */
578:
579: # define DP_AUTOTRUNC 1 /* long filenames truncated */
580:
581: # define DP_DOSTRUNC 2 /* DOS truncation rules in effect */
582:
583: #define DP_CASE 6
584:
585: # define DP_CASESENS 0 /* case sensitive */
586:
587: # define DP_CASECONV 1 /* case always converted */
588:
589: # define DP_CASEINSENS 2 /* case insensitive, preserved */
590:
591: #define DP_MAXREQ 6 /* highest legal request */
592:
593:
594:
595: /* Dpathconf and Sysconf return this when a value is not limited
596:
597: (or is limited only by available memory) */
598:
599:
600:
601: #define UNLIMITED 0x7fffffffL
602:
603:
604:
605: /* various character constants and defines for TTY's */
606:
607: #define MiNTEOF 0x0000ff1a /* 1a == ^Z */
608:
609:
610:
611: /* defines for tty_read */
612:
613: #define RAW 0
614:
615: #define COOKED 0x1
616:
617: #define NOECHO 0
618:
619: #define ECHO 0x2
620:
621: #define ESCSEQ 0x04 /* cursor keys, etc. get escape sequences */
622:
623:
624:
625: /* constants for Fcntl calls */
626:
627: #define F_DUPFD 0 /* handled by kernel */
628:
629: #define F_GETFD 1 /* handled by kernel */
630:
631: #define F_SETFD 2 /* handled by kernel */
632:
633: # define FD_CLOEXEC 1 /* close on exec flag */
634:
635:
636:
637: #define F_GETFL 3 /* handled by kernel */
638:
639: #define F_SETFL 4 /* handled by kernel */
640:
641: #define F_GETLK 5
642:
643: #define F_SETLK 6
644:
645:
646:
647: /* more constants for various Fcntl's */
648:
649: #define FSTAT (('F'<< 8) | 0) /* handled by kernel */
650:
651: #define FIONREAD (('F'<< 8) | 1)
652:
653: #define FIONWRITE (('F'<< 8) | 2)
654:
655: #define TIOCGETP (('T'<< 8) | 0)
656:
657: #define TIOCSETP (('T'<< 8) | 1)
658:
659: #define TIOCSETN TIOCSETP
660:
661: #define TIOCGETC (('T'<< 8) | 2)
662:
663: #define TIOCSETC (('T'<< 8) | 3)
664:
665: #define TIOCGLTC (('T'<< 8) | 4)
666:
667: #define TIOCSLTC (('T'<< 8) | 5)
668:
669: #define TIOCGPGRP (('T'<< 8) | 6)
670:
671: #define TIOCSPGRP (('T'<< 8) | 7)
672:
673: #define TIOCFLUSH (('T'<< 8) | 8)
674:
675: #define TIOCSTOP (('T'<< 8) | 9)
676:
677: #define TIOCSTART (('T'<< 8) | 10)
678:
679: #define TIOCGWINSZ (('T'<< 8) | 11)
680:
681: #define TIOCSWINSZ (('T'<< 8) | 12)
682:
683: #define TIOCGXKEY (('T'<< 8) | 13)
684:
685: #define TIOCSXKEY (('T'<< 8) | 14)
686:
687: #define TIOCIBAUD (('T'<< 8) | 18)
688:
689: #define TIOCOBAUD (('T'<< 8) | 19)
690:
691: #define TIOCCBRK (('T'<< 8) | 20)
692:
693: #define TIOCSBRK (('T'<< 8) | 21)
694:
695: #define TIOCGFLAGS (('T'<< 8) | 22)
696:
697: #define TIOCSFLAGS (('T'<< 8) | 23)
698:
699:
700:
701: #define PPROCADDR (('P'<< 8) | 1)
702:
703: #define PBASEADDR (('P'<< 8) | 2)
704:
705: #define PCTXTSIZE (('P'<< 8) | 3)
706:
707: #define PSETFLAGS (('P'<< 8) | 4)
708:
709: #define PGETFLAGS (('P'<< 8) | 5)
710:
711:
712:
713: #define SHMGETBLK (('M'<< 8) | 0)
714:
715: #define SHMSETBLK (('M'<< 8) | 1)
716:
717:
718:
719: /* terminal control constants (tty.sg_flags) */
720:
721: #define T_CRMOD 0x0001
722:
723: #define T_CBREAK 0x0002
724:
725: #define T_ECHO 0x0004
726:
727: /* #define T_XTABS 0x0008 unimplemented*/
728:
729: #define T_RAW 0x0010
730:
731: /* #define T_LCASE 0x0020 unimplemented */
732:
733:
734:
735: #define T_NOFLSH 0x0040 /* don't flush buffer when signals
736:
737: are received */
738:
739: #define T_TOS 0x0080
740:
741: #define T_TOSTOP 0x0100
742:
743: #define T_XKEY 0x0200 /* Fread returns escape sequences for
744:
745: cursor keys, etc. */
746:
747: /* 0x0400 and 0x0800 still available */
748:
749: #define T_TANDEM 0x1000
750:
751: #define T_RTSCTS 0x2000
752:
753: #define T_EVENP 0x4000 /* EVENP and ODDP are mutually exclusive */
754:
755: #define T_ODDP 0x8000
756:
757:
758:
759: #define TF_FLAGS 0xF000
760:
761:
762:
763: /* some flags for TIOC[GS]FLAGS */
764:
765: #define TF_STOPBITS 0x0003
766:
767: #define TF_1STOP 0x0001
768:
769: #define TF_15STOP 0x0002
770:
771: #define TF_2STOP 0x0003
772:
773:
774:
775: #define TF_CHARBITS 0x000C
776:
777: #define TF_8BIT 0
778:
779: #define TF_7BIT 0x4
780:
781: #define TF_6BIT 0x8
782:
783: #define TF_5BIT 0xC
784:
785:
786:
787: /* the following are terminal status flags (tty.state) */
788:
789: /* (the low byte of tty.state indicates a part of an escape sequence still
790:
791: * hasn't been read by Fread, and is an index into that escape sequence)
792:
793: */
794:
795: #define TS_ESC 0x00ff
796:
797: #define TS_HOLD 0x1000 /* hold (e.g. ^S/^Q) */
798:
799: #define TS_COOKED 0x8000 /* interpret control chars */
800:
801:
802:
803: /* structures for terminals */
804:
805: struct tchars {
806:
807: char t_intrc;
808:
809: char t_quitc;
810:
811: char t_startc;
812:
813: char t_stopc;
814:
815: char t_eofc;
816:
817: char t_brkc;
818:
819: };
820:
821:
822:
823: struct ltchars {
824:
825: char t_suspc;
826:
827: char t_dsuspc;
828:
829: char t_rprntc;
830:
831: char t_flushc;
832:
833: char t_werasc;
834:
835: char t_lnextc;
836:
837: };
838:
839:
840:
841: struct sgttyb {
842:
843: char sg_ispeed;
844:
845: char sg_ospeed;
846:
847: char sg_erase;
848:
849: char sg_kill;
850:
851: ushort sg_flags;
852:
853: };
854:
855:
856:
857: struct winsize {
858:
859: short ws_row;
860:
861: short ws_col;
862:
863: short ws_xpixel;
864:
865: short ws_ypixel;
866:
867: };
868:
869:
870:
871: struct xkey {
872:
873: short xk_num;
874:
875: char xk_def[8];
876:
877: };
878:
879:
880:
881: struct tty {
882:
883: short pgrp; /* process group of terminal */
884:
885: short state; /* terminal status, e.g. stopped */
886:
887: short use_cnt; /* number of times terminal is open */
888:
889: short res1; /* reserved for future expansion */
890:
891: struct sgttyb sg;
892:
893: struct tchars tc;
894:
895: struct ltchars ltc;
896:
897: struct winsize wsiz;
898:
899: long rsel; /* selecting process for read */
900:
901: long wsel; /* selecting process for write */
902:
903: char *xkey; /* extended keyboard table */
904:
905: long resrvd[3]; /* for future expansion */
906:
907: };
908:
909:
910:
911: /* Dcntl constants and types */
912:
913: #define DEV_NEWTTY 0xde00
914:
915: #define DEV_NEWBIOS 0xde01
916:
917: #define DEV_INSTALL 0xde02
918:
919:
920:
921: struct dev_descr {
922:
923: DEVDRV *driver;
924:
925: short dinfo;
926:
927: short flags;
928:
929: struct tty *tty;
930:
931: long reserved[4];
932:
933: };
934:
935:
936:
937: /* external variables */
938:
939:
940:
941: #define NUM_DRIVES 32
942:
943: extern FILESYS *drives[NUM_DRIVES];
944:
945:
946:
947: #define BIOSDRV ('V'-'A')
948:
949: #define PIPEDRV ('Q'-'A')
950:
951: #define PROCDRV ('X'-'A')
952:
953: #define UNIDRV ('U'-'A')
954:
955:
956:
957: #define PSEUDODRVS ((1L<<BIOSDRV)|(1L<<PIPEDRV)|(1L<<PROCDRV)|(1L<<UNIDRV))
958:
959:
960:
961: #define PROC_BASE_DEV 0xA000
962:
963: #define SHMDEVICE 0xB000
964:
965:
966:
967: extern struct tty default_tty;
968:
969: extern char follow_links[];
970:
971:
972:
973: #endif /* _filesys_h */
974:
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