1 b3994ec5 2003-12-11 devnull #include <u.h>
2 b3994ec5 2003-12-11 devnull #include <libc.h>
3 b3994ec5 2003-12-11 devnull #include <draw.h>
4 b3994ec5 2003-12-11 devnull #include <thread.h>
5 b3994ec5 2003-12-11 devnull #include <cursor.h>
6 b3994ec5 2003-12-11 devnull #include <mouse.h>
7 b3994ec5 2003-12-11 devnull #include <keyboard.h>
8 b3994ec5 2003-12-11 devnull #include <frame.h>
9 b3994ec5 2003-12-11 devnull #include <fcall.h>
10 b3994ec5 2003-12-11 devnull #include <plumb.h>
11 b3994ec5 2003-12-11 devnull #include "dat.h"
12 b3994ec5 2003-12-11 devnull #include "fns.h"
14 b3994ec5 2003-12-11 devnull static int sfd;
18 b3994ec5 2003-12-11 devnull Nhash = 16,
19 b3994ec5 2003-12-11 devnull DEBUG = 0
22 b3994ec5 2003-12-11 devnull static Fid *fids[Nhash];
24 b3994ec5 2003-12-11 devnull Fid *newfid(int);
26 b3994ec5 2003-12-11 devnull static Xfid* fsysflush(Xfid*, Fid*);
27 b3994ec5 2003-12-11 devnull static Xfid* fsysauth(Xfid*, Fid*);
28 b3994ec5 2003-12-11 devnull static Xfid* fsysversion(Xfid*, Fid*);
29 b3994ec5 2003-12-11 devnull static Xfid* fsysattach(Xfid*, Fid*);
30 b3994ec5 2003-12-11 devnull static Xfid* fsyswalk(Xfid*, Fid*);
31 b3994ec5 2003-12-11 devnull static Xfid* fsysopen(Xfid*, Fid*);
32 b3994ec5 2003-12-11 devnull static Xfid* fsyscreate(Xfid*, Fid*);
33 b3994ec5 2003-12-11 devnull static Xfid* fsysread(Xfid*, Fid*);
34 b3994ec5 2003-12-11 devnull static Xfid* fsyswrite(Xfid*, Fid*);
35 b3994ec5 2003-12-11 devnull static Xfid* fsysclunk(Xfid*, Fid*);
36 b3994ec5 2003-12-11 devnull static Xfid* fsysremove(Xfid*, Fid*);
37 b3994ec5 2003-12-11 devnull static Xfid* fsysstat(Xfid*, Fid*);
38 b3994ec5 2003-12-11 devnull static Xfid* fsyswstat(Xfid*, Fid*);
40 8ad51794 2004-03-25 devnull Xfid* (*fcall[Tmax])(Xfid*, Fid*);
42 8ad51794 2004-03-25 devnull static void
43 8ad51794 2004-03-25 devnull initfcall(void)
45 8ad51794 2004-03-25 devnull fcall[Tflush] = fsysflush;
46 8ad51794 2004-03-25 devnull fcall[Tversion] = fsysversion;
47 8ad51794 2004-03-25 devnull fcall[Tauth] = fsysauth;
48 8ad51794 2004-03-25 devnull fcall[Tattach] = fsysattach;
49 8ad51794 2004-03-25 devnull fcall[Twalk] = fsyswalk;
50 8ad51794 2004-03-25 devnull fcall[Topen] = fsysopen;
51 8ad51794 2004-03-25 devnull fcall[Tcreate] = fsyscreate;
52 8ad51794 2004-03-25 devnull fcall[Tread] = fsysread;
53 8ad51794 2004-03-25 devnull fcall[Twrite] = fsyswrite;
54 8ad51794 2004-03-25 devnull fcall[Tclunk] = fsysclunk;
55 8ad51794 2004-03-25 devnull fcall[Tremove]= fsysremove;
56 8ad51794 2004-03-25 devnull fcall[Tstat] = fsysstat;
57 8ad51794 2004-03-25 devnull fcall[Twstat] = fsyswstat;
60 b3994ec5 2003-12-11 devnull char Eperm[] = "permission denied";
61 b3994ec5 2003-12-11 devnull char Eexist[] = "file does not exist";
62 b3994ec5 2003-12-11 devnull char Enotdir[] = "not a directory";
64 b3994ec5 2003-12-11 devnull Dirtab dirtab[]=
66 b3994ec5 2003-12-11 devnull { ".", QTDIR, Qdir, 0500|DMDIR },
67 b3994ec5 2003-12-11 devnull { "acme", QTDIR, Qacme, 0500|DMDIR },
68 b3994ec5 2003-12-11 devnull { "cons", QTFILE, Qcons, 0600 },
69 b3994ec5 2003-12-11 devnull { "consctl", QTFILE, Qconsctl, 0000 },
70 b3994ec5 2003-12-11 devnull { "draw", QTDIR, Qdraw, 0000|DMDIR }, /* to suppress graphics progs started in acme */
71 b3994ec5 2003-12-11 devnull { "editout", QTFILE, Qeditout, 0200 },
72 b3994ec5 2003-12-11 devnull { "index", QTFILE, Qindex, 0400 },
73 b3994ec5 2003-12-11 devnull { "label", QTFILE, Qlabel, 0600 },
74 b3994ec5 2003-12-11 devnull { "new", QTDIR, Qnew, 0500|DMDIR },
78 b3994ec5 2003-12-11 devnull Dirtab dirtabw[]=
80 b3994ec5 2003-12-11 devnull { ".", QTDIR, Qdir, 0500|DMDIR },
81 b3994ec5 2003-12-11 devnull { "addr", QTFILE, QWaddr, 0600 },
82 b3994ec5 2003-12-11 devnull { "body", QTAPPEND, QWbody, 0600|DMAPPEND },
83 b3994ec5 2003-12-11 devnull { "ctl", QTFILE, QWctl, 0600 },
84 b3994ec5 2003-12-11 devnull { "data", QTFILE, QWdata, 0600 },
85 b3994ec5 2003-12-11 devnull { "editout", QTFILE, QWeditout, 0200 },
86 9d01e221 2005-01-30 devnull { "errors", QTFILE, QWerrors, 0200 },
87 b3994ec5 2003-12-11 devnull { "event", QTFILE, QWevent, 0600 },
88 b3994ec5 2003-12-11 devnull { "rdsel", QTFILE, QWrdsel, 0400 },
89 b3994ec5 2003-12-11 devnull { "wrsel", QTFILE, QWwrsel, 0200 },
90 b3994ec5 2003-12-11 devnull { "tag", QTAPPEND, QWtag, 0600|DMAPPEND },
91 012a8a02 2004-10-22 devnull { "xdata", QTFILE, QWxdata, 0600 },
95 b3994ec5 2003-12-11 devnull typedef struct Mnt Mnt;
96 b3994ec5 2003-12-11 devnull struct Mnt
98 b3994ec5 2003-12-11 devnull QLock lk;
100 b3994ec5 2003-12-11 devnull Mntdir *md;
103 b3994ec5 2003-12-11 devnull Mnt mnt;
105 b3994ec5 2003-12-11 devnull Xfid* respond(Xfid*, Fcall*, char*);
106 b3994ec5 2003-12-11 devnull int dostat(int, Dirtab*, uchar*, int, uint);
107 b3994ec5 2003-12-11 devnull uint getclock(void);
109 b3994ec5 2003-12-11 devnull char *user = "Wile E. Coyote";
110 b3994ec5 2003-12-11 devnull static int closing = 0;
111 b3994ec5 2003-12-11 devnull int messagesize = Maxblock+IOHDRSZ; /* good start */
113 b3994ec5 2003-12-11 devnull void fsysproc(void *);
116 b3994ec5 2003-12-11 devnull fsysinit(void)
118 b3994ec5 2003-12-11 devnull int p[2];
119 5a8e63b2 2004-02-29 devnull char *u;
121 8ad51794 2004-03-25 devnull initfcall();
122 b3994ec5 2003-12-11 devnull if(pipe(p) < 0)
123 b3994ec5 2003-12-11 devnull error("can't create pipe");
124 b3994ec5 2003-12-11 devnull if(post9pservice(p[0], "acme") < 0)
125 b3994ec5 2003-12-11 devnull error("can't post service");
126 b3994ec5 2003-12-11 devnull sfd = p[1];
127 b3994ec5 2003-12-11 devnull fmtinstall('F', fcallfmt);
128 b3994ec5 2003-12-11 devnull if((u = getuser()) != nil)
129 b3994ec5 2003-12-11 devnull user = estrdup(u);
130 334cb1e9 2004-12-27 devnull proccreate(fsysproc, nil, STACK);
134 b3994ec5 2003-12-11 devnull fsysproc(void *v)
137 b3994ec5 2003-12-11 devnull Xfid *x;
139 b3994ec5 2003-12-11 devnull Fcall t;
140 b3994ec5 2003-12-11 devnull uchar *buf;
142 b3994ec5 2003-12-11 devnull USED(v);
143 b3994ec5 2003-12-11 devnull x = nil;
144 b3994ec5 2003-12-11 devnull for(;;){
145 b3994ec5 2003-12-11 devnull buf = emalloc(messagesize+UTFmax); /* overflow for appending partial rune in xfidwrite */
146 334cb1e9 2004-12-27 devnull n = read9pmsg(sfd, buf, messagesize);
147 b3994ec5 2003-12-11 devnull if(n <= 0){
148 b3994ec5 2003-12-11 devnull if(closing)
150 b3994ec5 2003-12-11 devnull error("i/o error on server channel");
152 b3994ec5 2003-12-11 devnull if(x == nil){
153 b3994ec5 2003-12-11 devnull sendp(cxfidalloc, nil);
154 b3994ec5 2003-12-11 devnull x = recvp(cxfidalloc);
156 b3994ec5 2003-12-11 devnull x->buf = buf;
157 b3994ec5 2003-12-11 devnull if(convM2S(buf, n, &x->fcall) != n)
158 b3994ec5 2003-12-11 devnull error("convert error in convM2S");
159 b3994ec5 2003-12-11 devnull if(DEBUG)
160 b3994ec5 2003-12-11 devnull fprint(2, "%F\n", &x->fcall);
161 8c061315 2005-03-18 devnull if(fcall[x->fcall.type] == nil)
162 b3994ec5 2003-12-11 devnull x = respond(x, &t, "bad fcall type");
164 07494878 2005-01-27 devnull switch(x->fcall.type){
165 07494878 2005-01-27 devnull case Tversion:
166 07494878 2005-01-27 devnull case Tauth:
167 07494878 2005-01-27 devnull case Tflush:
168 b3994ec5 2003-12-11 devnull f = nil;
170 07494878 2005-01-27 devnull case Tattach:
171 07494878 2005-01-27 devnull f = newfid(x->fcall.fid);
173 07494878 2005-01-27 devnull default:
174 b3994ec5 2003-12-11 devnull f = newfid(x->fcall.fid);
175 07494878 2005-01-27 devnull if(!f->busy){
176 07494878 2005-01-27 devnull x->f = f;
177 07494878 2005-01-27 devnull x = respond(x, &t, "fid not in use");
178 07494878 2005-01-27 devnull continue;
182 b3994ec5 2003-12-11 devnull x->f = f;
183 b3994ec5 2003-12-11 devnull x = (*fcall[x->fcall.type])(x, f);
189 b3994ec5 2003-12-11 devnull fsysaddid(Rune *dir, int ndir, Rune **incl, int nincl)
191 b3994ec5 2003-12-11 devnull Mntdir *m;
194 b3994ec5 2003-12-11 devnull qlock(&mnt.lk);
195 b3994ec5 2003-12-11 devnull id = ++mnt.id;
196 b3994ec5 2003-12-11 devnull m = emalloc(sizeof *m);
197 b3994ec5 2003-12-11 devnull m->id = id;
198 b3994ec5 2003-12-11 devnull m->dir = dir;
199 b3994ec5 2003-12-11 devnull m->ref = 1; /* one for Command, one will be incremented in attach */
200 b3994ec5 2003-12-11 devnull m->ndir = ndir;
201 b3994ec5 2003-12-11 devnull m->next = mnt.md;
202 b3994ec5 2003-12-11 devnull m->incl = incl;
203 b3994ec5 2003-12-11 devnull m->nincl = nincl;
204 b3994ec5 2003-12-11 devnull mnt.md = m;
205 b3994ec5 2003-12-11 devnull qunlock(&mnt.lk);
206 b3994ec5 2003-12-11 devnull return m;
210 8ad51794 2004-03-25 devnull fsysincid(Mntdir *m)
212 8ad51794 2004-03-25 devnull qlock(&mnt.lk);
213 8ad51794 2004-03-25 devnull m->ref++;
214 8ad51794 2004-03-25 devnull qunlock(&mnt.lk);
218 b3994ec5 2003-12-11 devnull fsysdelid(Mntdir *idm)
220 b3994ec5 2003-12-11 devnull Mntdir *m, *prev;
222 b3994ec5 2003-12-11 devnull char buf[64];
224 b3994ec5 2003-12-11 devnull if(idm == nil)
226 b3994ec5 2003-12-11 devnull qlock(&mnt.lk);
227 b3994ec5 2003-12-11 devnull if(--idm->ref > 0){
228 b3994ec5 2003-12-11 devnull qunlock(&mnt.lk);
231 b3994ec5 2003-12-11 devnull prev = nil;
232 b3994ec5 2003-12-11 devnull for(m=mnt.md; m; m=m->next){
233 b3994ec5 2003-12-11 devnull if(m == idm){
234 b3994ec5 2003-12-11 devnull if(prev)
235 b3994ec5 2003-12-11 devnull prev->next = m->next;
237 b3994ec5 2003-12-11 devnull mnt.md = m->next;
238 b3994ec5 2003-12-11 devnull for(i=0; i<m->nincl; i++)
239 b3994ec5 2003-12-11 devnull free(m->incl[i]);
240 b3994ec5 2003-12-11 devnull free(m->incl);
241 b3994ec5 2003-12-11 devnull free(m->dir);
242 b3994ec5 2003-12-11 devnull free(m);
243 b3994ec5 2003-12-11 devnull qunlock(&mnt.lk);
246 b3994ec5 2003-12-11 devnull prev = m;
248 b3994ec5 2003-12-11 devnull qunlock(&mnt.lk);
249 b3994ec5 2003-12-11 devnull sprint(buf, "fsysdelid: can't find id %d\n", idm->id);
250 b3994ec5 2003-12-11 devnull sendp(cerr, estrdup(buf));
254 b3994ec5 2003-12-11 devnull * Called only in exec.c:/^run(), from a different FD group
257 b3994ec5 2003-12-11 devnull fsysmount(Rune *dir, int ndir, Rune **incl, int nincl)
259 b3994ec5 2003-12-11 devnull return fsysaddid(dir, ndir, incl, nincl);
263 b3994ec5 2003-12-11 devnull fsysclose(void)
265 b3994ec5 2003-12-11 devnull closing = 1;
267 d242e5ad 2005-07-22 devnull * apparently this is not kosher on openbsd.
268 d242e5ad 2005-07-22 devnull * perhaps because fsysproc is reading from sfd right now,
269 d242e5ad 2005-07-22 devnull * the close hangs indefinitely.
270 b3994ec5 2003-12-11 devnull close(sfd);
275 b3994ec5 2003-12-11 devnull respond(Xfid *x, Fcall *t, char *err)
279 b3994ec5 2003-12-11 devnull if(err){
280 b3994ec5 2003-12-11 devnull t->type = Rerror;
281 b3994ec5 2003-12-11 devnull t->ename = err;
283 b3994ec5 2003-12-11 devnull t->type = x->fcall.type+1;
284 b3994ec5 2003-12-11 devnull t->fid = x->fcall.fid;
285 b3994ec5 2003-12-11 devnull t->tag = x->fcall.tag;
286 b3994ec5 2003-12-11 devnull if(x->buf == nil)
287 b3994ec5 2003-12-11 devnull x->buf = emalloc(messagesize);
288 b3994ec5 2003-12-11 devnull n = convS2M(t, x->buf, messagesize);
289 b3994ec5 2003-12-11 devnull if(n <= 0)
291 5a8e63b2 2004-02-29 devnull fprint(2, "convert error (n=%d, msgsize %d): have %F\n", n, messagesize, &x->fcall);
292 5a8e63b2 2004-02-29 devnull fprint(2, "\tresponse: %F\n", t);
293 b3994ec5 2003-12-11 devnull error("convert error in convS2M");
295 b3994ec5 2003-12-11 devnull if(write(sfd, x->buf, n) != n)
296 b3994ec5 2003-12-11 devnull error("write error in respond");
297 b3994ec5 2003-12-11 devnull free(x->buf);
298 b3994ec5 2003-12-11 devnull x->buf = nil;
299 b3994ec5 2003-12-11 devnull if(DEBUG)
300 b3994ec5 2003-12-11 devnull fprint(2, "r: %F\n", t);
301 b3994ec5 2003-12-11 devnull return x;
306 b3994ec5 2003-12-11 devnull fsysversion(Xfid *x, Fid *f)
308 b3994ec5 2003-12-11 devnull Fcall t;
310 b3994ec5 2003-12-11 devnull USED(f);
311 b3994ec5 2003-12-11 devnull if(x->fcall.msize < 256)
312 b3994ec5 2003-12-11 devnull return respond(x, &t, "version: message size too small");
313 b3994ec5 2003-12-11 devnull messagesize = x->fcall.msize;
314 b3994ec5 2003-12-11 devnull t.msize = messagesize;
315 b3994ec5 2003-12-11 devnull if(strncmp(x->fcall.version, "9P2000", 6) != 0)
316 b3994ec5 2003-12-11 devnull return respond(x, &t, "unrecognized 9P version");
317 b3994ec5 2003-12-11 devnull t.version = "9P2000";
318 b3994ec5 2003-12-11 devnull return respond(x, &t, nil);
323 b3994ec5 2003-12-11 devnull fsysauth(Xfid *x, Fid *f)
325 5aa723da 2005-02-11 devnull Fcall t;
327 b3994ec5 2003-12-11 devnull USED(f);
328 5aa723da 2005-02-11 devnull return respond(x, &t, "acme: authentication not required");
333 b3994ec5 2003-12-11 devnull fsysflush(Xfid *x, Fid *f)
335 b3994ec5 2003-12-11 devnull USED(f);
336 be22ae2d 2004-03-26 devnull sendp(x->c, (void*)xfidflush);
337 b3994ec5 2003-12-11 devnull return nil;
342 b3994ec5 2003-12-11 devnull fsysattach(Xfid *x, Fid *f)
344 b3994ec5 2003-12-11 devnull Fcall t;
346 b3994ec5 2003-12-11 devnull Mntdir *m;
347 49588d5d 2003-12-17 devnull char buf[128];
349 b3994ec5 2003-12-11 devnull if(strcmp(x->fcall.uname, user) != 0)
350 b3994ec5 2003-12-11 devnull return respond(x, &t, Eperm);
351 b3994ec5 2003-12-11 devnull f->busy = TRUE;
352 b3994ec5 2003-12-11 devnull f->open = FALSE;
353 b3994ec5 2003-12-11 devnull f->qid.path = Qdir;
354 b3994ec5 2003-12-11 devnull f->qid.type = QTDIR;
355 b3994ec5 2003-12-11 devnull f->qid.vers = 0;
356 b3994ec5 2003-12-11 devnull f->dir = dirtab;
357 b3994ec5 2003-12-11 devnull f->nrpart = 0;
358 b3994ec5 2003-12-11 devnull f->w = nil;
359 b3994ec5 2003-12-11 devnull t.qid = f->qid;
360 b3994ec5 2003-12-11 devnull f->mntdir = nil;
361 b3994ec5 2003-12-11 devnull id = atoi(x->fcall.aname);
362 b3994ec5 2003-12-11 devnull qlock(&mnt.lk);
363 b3994ec5 2003-12-11 devnull for(m=mnt.md; m; m=m->next)
364 b3994ec5 2003-12-11 devnull if(m->id == id){
365 b3994ec5 2003-12-11 devnull f->mntdir = m;
366 b3994ec5 2003-12-11 devnull m->ref++;
369 8ad51794 2004-03-25 devnull if(m == nil && x->fcall.aname[0]){
370 49588d5d 2003-12-17 devnull snprint(buf, sizeof buf, "unknown id '%s' in attach", x->fcall.aname);
371 49588d5d 2003-12-17 devnull sendp(cerr, estrdup(buf));
373 b3994ec5 2003-12-11 devnull qunlock(&mnt.lk);
374 b3994ec5 2003-12-11 devnull return respond(x, &t, nil);
379 b3994ec5 2003-12-11 devnull fsyswalk(Xfid *x, Fid *f)
381 b3994ec5 2003-12-11 devnull Fcall t;
382 b3994ec5 2003-12-11 devnull int c, i, j, id;
384 b3994ec5 2003-12-11 devnull uchar type;
385 b3994ec5 2003-12-11 devnull ulong path;
386 b3994ec5 2003-12-11 devnull Fid *nf;
387 b3994ec5 2003-12-11 devnull Dirtab *d, *dir;
388 b3994ec5 2003-12-11 devnull Window *w;
389 b3994ec5 2003-12-11 devnull char *err;
391 b3994ec5 2003-12-11 devnull nf = nil;
392 b3994ec5 2003-12-11 devnull w = nil;
393 b3994ec5 2003-12-11 devnull if(f->open)
394 b3994ec5 2003-12-11 devnull return respond(x, &t, "walk of open file");
395 b3994ec5 2003-12-11 devnull if(x->fcall.fid != x->fcall.newfid){
396 b3994ec5 2003-12-11 devnull nf = newfid(x->fcall.newfid);
397 b3994ec5 2003-12-11 devnull if(nf->busy)
398 b3994ec5 2003-12-11 devnull return respond(x, &t, "newfid already in use");
399 b3994ec5 2003-12-11 devnull nf->busy = TRUE;
400 b3994ec5 2003-12-11 devnull nf->open = FALSE;
401 b3994ec5 2003-12-11 devnull nf->mntdir = f->mntdir;
402 b3994ec5 2003-12-11 devnull if(f->mntdir)
403 b3994ec5 2003-12-11 devnull f->mntdir->ref++;
404 b3994ec5 2003-12-11 devnull nf->dir = f->dir;
405 b3994ec5 2003-12-11 devnull nf->qid = f->qid;
406 b3994ec5 2003-12-11 devnull nf->w = f->w;
407 b3994ec5 2003-12-11 devnull nf->nrpart = 0; /* not open, so must be zero */
408 b3994ec5 2003-12-11 devnull if(nf->w)
409 b3994ec5 2003-12-11 devnull incref(&nf->w->ref);
410 b3994ec5 2003-12-11 devnull f = nf; /* walk f */
413 b3994ec5 2003-12-11 devnull t.nwqid = 0;
414 b3994ec5 2003-12-11 devnull err = nil;
415 b3994ec5 2003-12-11 devnull dir = nil;
416 b3994ec5 2003-12-11 devnull id = WIN(f->qid);
417 b3994ec5 2003-12-11 devnull q = f->qid;
419 b3994ec5 2003-12-11 devnull if(x->fcall.nwname > 0){
420 b3994ec5 2003-12-11 devnull for(i=0; i<x->fcall.nwname; i++){
421 b3994ec5 2003-12-11 devnull if((q.type & QTDIR) == 0){
422 b3994ec5 2003-12-11 devnull err = Enotdir;
426 b3994ec5 2003-12-11 devnull if(strcmp(x->fcall.wname[i], "..") == 0){
427 b3994ec5 2003-12-11 devnull type = QTDIR;
428 b3994ec5 2003-12-11 devnull path = Qdir;
431 b3994ec5 2003-12-11 devnull winclose(w);
432 b3994ec5 2003-12-11 devnull w = nil;
435 b3994ec5 2003-12-11 devnull if(i == MAXWELEM){
436 b3994ec5 2003-12-11 devnull err = "name too long";
439 b3994ec5 2003-12-11 devnull q.type = type;
440 b3994ec5 2003-12-11 devnull q.vers = 0;
441 b3994ec5 2003-12-11 devnull q.path = QID(id, path);
442 b3994ec5 2003-12-11 devnull t.wqid[t.nwqid++] = q;
443 b3994ec5 2003-12-11 devnull continue;
446 b3994ec5 2003-12-11 devnull /* is it a numeric name? */
447 b3994ec5 2003-12-11 devnull for(j=0; (c=x->fcall.wname[i][j]); j++)
448 b3994ec5 2003-12-11 devnull if(c<'0' || '9'<c)
449 b3994ec5 2003-12-11 devnull goto Regular;
450 b3994ec5 2003-12-11 devnull /* yes: it's a directory */
451 b3994ec5 2003-12-11 devnull if(w) /* name has form 27/23; get out before losing w */
453 b3994ec5 2003-12-11 devnull id = atoi(x->fcall.wname[i]);
454 b3994ec5 2003-12-11 devnull qlock(&row.lk);
455 b3994ec5 2003-12-11 devnull w = lookid(id, FALSE);
456 b3994ec5 2003-12-11 devnull if(w == nil){
457 b3994ec5 2003-12-11 devnull qunlock(&row.lk);
460 b3994ec5 2003-12-11 devnull incref(&w->ref); /* we'll drop reference at end if there's an error */
461 b3994ec5 2003-12-11 devnull path = Qdir;
462 b3994ec5 2003-12-11 devnull type = QTDIR;
463 b3994ec5 2003-12-11 devnull qunlock(&row.lk);
464 b3994ec5 2003-12-11 devnull dir = dirtabw;
465 b3994ec5 2003-12-11 devnull goto Accept;
467 b3994ec5 2003-12-11 devnull Regular:
468 b3994ec5 2003-12-11 devnull // if(FILE(f->qid) == Qacme) /* empty directory */
469 b3994ec5 2003-12-11 devnull // break;
470 b3994ec5 2003-12-11 devnull if(strcmp(x->fcall.wname[i], "new") == 0){
472 b3994ec5 2003-12-11 devnull error("w set in walk to new");
473 b3994ec5 2003-12-11 devnull sendp(cnewwindow, nil); /* signal newwindowthread */
474 b3994ec5 2003-12-11 devnull w = recvp(cnewwindow); /* receive new window */
475 b3994ec5 2003-12-11 devnull incref(&w->ref);
476 b3994ec5 2003-12-11 devnull type = QTDIR;
477 b3994ec5 2003-12-11 devnull path = QID(w->id, Qdir);
478 b3994ec5 2003-12-11 devnull id = w->id;
479 b3994ec5 2003-12-11 devnull dir = dirtabw;
480 b3994ec5 2003-12-11 devnull goto Accept;
483 b3994ec5 2003-12-11 devnull if(id == 0)
484 b3994ec5 2003-12-11 devnull d = dirtab;
486 b3994ec5 2003-12-11 devnull d = dirtabw;
487 b3994ec5 2003-12-11 devnull d++; /* skip '.' */
488 b3994ec5 2003-12-11 devnull for(; d->name; d++)
489 b3994ec5 2003-12-11 devnull if(strcmp(x->fcall.wname[i], d->name) == 0){
490 b3994ec5 2003-12-11 devnull path = d->qid;
491 b3994ec5 2003-12-11 devnull type = d->type;
492 b3994ec5 2003-12-11 devnull dir = d;
493 b3994ec5 2003-12-11 devnull goto Accept;
496 b3994ec5 2003-12-11 devnull break; /* file not found */
499 b3994ec5 2003-12-11 devnull if(i==0 && err == nil)
500 b3994ec5 2003-12-11 devnull err = Eexist;
503 b3994ec5 2003-12-11 devnull if(err!=nil || t.nwqid<x->fcall.nwname){
505 b3994ec5 2003-12-11 devnull nf->busy = FALSE;
506 b3994ec5 2003-12-11 devnull fsysdelid(nf->mntdir);
508 b3994ec5 2003-12-11 devnull }else if(t.nwqid == x->fcall.nwname){
510 b3994ec5 2003-12-11 devnull f->w = w;
511 b3994ec5 2003-12-11 devnull w = nil; /* don't drop the reference */
514 b3994ec5 2003-12-11 devnull f->dir = dir;
515 b3994ec5 2003-12-11 devnull f->qid = q;
518 b3994ec5 2003-12-11 devnull if(w != nil)
519 b3994ec5 2003-12-11 devnull winclose(w);
521 b3994ec5 2003-12-11 devnull return respond(x, &t, err);
526 b3994ec5 2003-12-11 devnull fsysopen(Xfid *x, Fid *f)
528 b3994ec5 2003-12-11 devnull Fcall t;
531 b3994ec5 2003-12-11 devnull /* can't truncate anything, so just disregard */
532 b3994ec5 2003-12-11 devnull x->fcall.mode &= ~(OTRUNC|OCEXEC);
533 b3994ec5 2003-12-11 devnull /* can't execute or remove anything */
534 b3994ec5 2003-12-11 devnull if(x->fcall.mode==OEXEC || (x->fcall.mode&ORCLOSE))
535 b3994ec5 2003-12-11 devnull goto Deny;
536 b3994ec5 2003-12-11 devnull switch(x->fcall.mode){
537 b3994ec5 2003-12-11 devnull default:
538 b3994ec5 2003-12-11 devnull goto Deny;
539 b3994ec5 2003-12-11 devnull case OREAD:
540 b3994ec5 2003-12-11 devnull m = 0400;
542 b3994ec5 2003-12-11 devnull case OWRITE:
543 b3994ec5 2003-12-11 devnull m = 0200;
545 b3994ec5 2003-12-11 devnull case ORDWR:
546 b3994ec5 2003-12-11 devnull m = 0600;
549 b3994ec5 2003-12-11 devnull if(((f->dir->perm&~(DMDIR|DMAPPEND))&m) != m)
550 b3994ec5 2003-12-11 devnull goto Deny;
552 be22ae2d 2004-03-26 devnull sendp(x->c, (void*)xfidopen);
553 b3994ec5 2003-12-11 devnull return nil;
556 b3994ec5 2003-12-11 devnull return respond(x, &t, Eperm);
561 b3994ec5 2003-12-11 devnull fsyscreate(Xfid *x, Fid *f)
563 b3994ec5 2003-12-11 devnull Fcall t;
565 b3994ec5 2003-12-11 devnull USED(f);
566 b3994ec5 2003-12-11 devnull return respond(x, &t, Eperm);
571 b3994ec5 2003-12-11 devnull idcmp(const void *a, const void *b)
573 b3994ec5 2003-12-11 devnull return *(int*)a - *(int*)b;
578 b3994ec5 2003-12-11 devnull fsysread(Xfid *x, Fid *f)
580 b3994ec5 2003-12-11 devnull Fcall t;
581 b3994ec5 2003-12-11 devnull uchar *b;
582 b3994ec5 2003-12-11 devnull int i, id, n, o, e, j, k, *ids, nids;
583 b3994ec5 2003-12-11 devnull Dirtab *d, dt;
584 b3994ec5 2003-12-11 devnull Column *c;
585 b3994ec5 2003-12-11 devnull uint clock, len;
586 b3994ec5 2003-12-11 devnull char buf[16];
588 b3994ec5 2003-12-11 devnull if(f->qid.type & QTDIR){
589 b3994ec5 2003-12-11 devnull if(FILE(f->qid) == Qacme){ /* empty dir */
590 b3994ec5 2003-12-11 devnull t.data = nil;
591 b3994ec5 2003-12-11 devnull t.count = 0;
592 b3994ec5 2003-12-11 devnull respond(x, &t, nil);
593 b3994ec5 2003-12-11 devnull return x;
595 b3994ec5 2003-12-11 devnull o = x->fcall.offset;
596 b3994ec5 2003-12-11 devnull e = x->fcall.offset+x->fcall.count;
597 b3994ec5 2003-12-11 devnull clock = getclock();
598 b3994ec5 2003-12-11 devnull b = emalloc(messagesize);
599 b3994ec5 2003-12-11 devnull id = WIN(f->qid);
601 b3994ec5 2003-12-11 devnull if(id > 0)
602 b3994ec5 2003-12-11 devnull d = dirtabw;
604 b3994ec5 2003-12-11 devnull d = dirtab;
605 b3994ec5 2003-12-11 devnull d++; /* first entry is '.' */
606 b3994ec5 2003-12-11 devnull for(i=0; d->name!=nil && i<e; i+=len){
607 b3994ec5 2003-12-11 devnull len = dostat(WIN(x->f->qid), d, b+n, x->fcall.count-n, clock);
608 b3994ec5 2003-12-11 devnull if(len <= BIT16SZ)
610 b3994ec5 2003-12-11 devnull if(i >= o)
611 b3994ec5 2003-12-11 devnull n += len;
614 b3994ec5 2003-12-11 devnull if(id == 0){
615 b3994ec5 2003-12-11 devnull qlock(&row.lk);
616 b3994ec5 2003-12-11 devnull nids = 0;
617 b3994ec5 2003-12-11 devnull ids = nil;
618 b3994ec5 2003-12-11 devnull for(j=0; j<row.ncol; j++){
619 b3994ec5 2003-12-11 devnull c = row.col[j];
620 b3994ec5 2003-12-11 devnull for(k=0; k<c->nw; k++){
621 b3994ec5 2003-12-11 devnull ids = realloc(ids, (nids+1)*sizeof(int));
622 b3994ec5 2003-12-11 devnull ids[nids++] = c->w[k]->id;
625 b3994ec5 2003-12-11 devnull qunlock(&row.lk);
626 b3994ec5 2003-12-11 devnull qsort(ids, nids, sizeof ids[0], idcmp);
628 b3994ec5 2003-12-11 devnull dt.name = buf;
629 b3994ec5 2003-12-11 devnull for(; j<nids && i<e; i+=len){
630 b3994ec5 2003-12-11 devnull k = ids[j];
631 b3994ec5 2003-12-11 devnull sprint(dt.name, "%d", k);
632 b3994ec5 2003-12-11 devnull dt.qid = QID(k, Qdir);
633 b3994ec5 2003-12-11 devnull dt.type = QTDIR;
634 b3994ec5 2003-12-11 devnull dt.perm = DMDIR|0700;
635 b3994ec5 2003-12-11 devnull len = dostat(k, &dt, b+n, x->fcall.count-n, clock);
636 b3994ec5 2003-12-11 devnull if(len == 0)
638 b3994ec5 2003-12-11 devnull if(i >= o)
639 b3994ec5 2003-12-11 devnull n += len;
642 b3994ec5 2003-12-11 devnull free(ids);
644 b3994ec5 2003-12-11 devnull t.data = (char*)b;
645 b3994ec5 2003-12-11 devnull t.count = n;
646 b3994ec5 2003-12-11 devnull respond(x, &t, nil);
647 b3994ec5 2003-12-11 devnull free(b);
648 b3994ec5 2003-12-11 devnull return x;
650 be22ae2d 2004-03-26 devnull sendp(x->c, (void*)xfidread);
651 b3994ec5 2003-12-11 devnull return nil;
656 b3994ec5 2003-12-11 devnull fsyswrite(Xfid *x, Fid *f)
658 b3994ec5 2003-12-11 devnull USED(f);
659 be22ae2d 2004-03-26 devnull sendp(x->c, (void*)xfidwrite);
660 b3994ec5 2003-12-11 devnull return nil;
665 b3994ec5 2003-12-11 devnull fsysclunk(Xfid *x, Fid *f)
667 b3994ec5 2003-12-11 devnull fsysdelid(f->mntdir);
668 be22ae2d 2004-03-26 devnull sendp(x->c, (void*)xfidclose);
669 b3994ec5 2003-12-11 devnull return nil;
674 b3994ec5 2003-12-11 devnull fsysremove(Xfid *x, Fid *f)
676 b3994ec5 2003-12-11 devnull Fcall t;
678 b3994ec5 2003-12-11 devnull USED(f);
679 b3994ec5 2003-12-11 devnull return respond(x, &t, Eperm);
684 b3994ec5 2003-12-11 devnull fsysstat(Xfid *x, Fid *f)
686 b3994ec5 2003-12-11 devnull Fcall t;
688 b3994ec5 2003-12-11 devnull t.stat = emalloc(messagesize-IOHDRSZ);
689 b3994ec5 2003-12-11 devnull t.nstat = dostat(WIN(x->f->qid), f->dir, t.stat, messagesize-IOHDRSZ, getclock());
690 b3994ec5 2003-12-11 devnull x = respond(x, &t, nil);
691 b3994ec5 2003-12-11 devnull free(t.stat);
692 b3994ec5 2003-12-11 devnull return x;
697 b3994ec5 2003-12-11 devnull fsyswstat(Xfid *x, Fid *f)
699 b3994ec5 2003-12-11 devnull Fcall t;
701 b3994ec5 2003-12-11 devnull USED(f);
702 b3994ec5 2003-12-11 devnull return respond(x, &t, Eperm);
706 b3994ec5 2003-12-11 devnull newfid(int fid)
708 b3994ec5 2003-12-11 devnull Fid *f, *ff, **fh;
710 b3994ec5 2003-12-11 devnull ff = nil;
711 b3994ec5 2003-12-11 devnull fh = &fids[fid&(Nhash-1)];
712 b3994ec5 2003-12-11 devnull for(f=*fh; f; f=f->next)
713 b3994ec5 2003-12-11 devnull if(f->fid == fid)
714 b3994ec5 2003-12-11 devnull return f;
715 b3994ec5 2003-12-11 devnull else if(ff==nil && f->busy==FALSE)
718 b3994ec5 2003-12-11 devnull ff->fid = fid;
719 b3994ec5 2003-12-11 devnull return ff;
721 b3994ec5 2003-12-11 devnull f = emalloc(sizeof *f);
722 b3994ec5 2003-12-11 devnull f->fid = fid;
723 b3994ec5 2003-12-11 devnull f->next = *fh;
724 b3994ec5 2003-12-11 devnull *fh = f;
725 b3994ec5 2003-12-11 devnull return f;
729 b3994ec5 2003-12-11 devnull getclock(void)
732 b3994ec5 2003-12-11 devnull char buf[32];
734 b3994ec5 2003-12-11 devnull buf[0] = '\0';
735 b3994ec5 2003-12-11 devnull pread(clockfd, buf, sizeof buf, 0);
736 b3994ec5 2003-12-11 devnull return atoi(buf);
738 b3994ec5 2003-12-11 devnull return time(0);
742 b3994ec5 2003-12-11 devnull dostat(int id, Dirtab *dir, uchar *buf, int nbuf, uint clock)
746 b3994ec5 2003-12-11 devnull d.qid.path = QID(id, dir->qid);
747 b3994ec5 2003-12-11 devnull d.qid.vers = 0;
748 b3994ec5 2003-12-11 devnull d.qid.type = dir->type;
749 b3994ec5 2003-12-11 devnull d.mode = dir->perm;
750 b3994ec5 2003-12-11 devnull d.length = 0; /* would be nice to do better */
751 b3994ec5 2003-12-11 devnull d.name = dir->name;
752 b3994ec5 2003-12-11 devnull d.uid = user;
753 b3994ec5 2003-12-11 devnull d.gid = user;
754 b3994ec5 2003-12-11 devnull d.muid = user;
755 b3994ec5 2003-12-11 devnull d.atime = clock;
756 b3994ec5 2003-12-11 devnull d.mtime = clock;
757 b3994ec5 2003-12-11 devnull return convD2M(&d, buf, nbuf);
