2 #include "../port/lib.h"
6 #include "../port/error.h"
9 typedef struct Srv Srv;
25 srvlookup(char *name, ulong qidpath)
28 for(sp = srv; sp; sp = sp->link)
29 if(sp->path == qidpath || (name && strcmp(sp->name, name) == 0))
35 srvgen(Chan *c, char *name, Dirtab*, int, int s, Dir *dp)
41 devdir(c, c->qid, "#s", 0, eve, 0555, dp);
47 sp = srvlookup(name, -1);
49 for(sp = srv; sp && s; sp = sp->link)
52 if(sp == 0 || name && (strlen(sp->name) >= sizeof(up->genbuf))) {
56 mkqid(&q, sp->path, 0, QTFILE);
57 /* make sure name string continues to exist after we release lock */
58 kstrcpy(up->genbuf, sp->name, sizeof up->genbuf);
59 devdir(c, q, up->genbuf, 0, sp->owner, sp->perm, dp);
73 return devattach('s', spec);
77 srvwalk(Chan *c, Chan *nc, char **name, int nname)
79 return devwalk(c, nc, name, nname, 0, 0, srvgen);
83 srvstat(Chan *c, uchar *db, int n)
85 return devstat(c, db, n, 0, 0, srvgen);
94 for(sp = srv; sp; sp = sp->link)
96 s = smalloc(3+strlen(sp->name)+1);
97 sprint(s, "#s/%s", sp->name);
104 srvopen(Chan *c, int omode)
108 if(c->qid.type == QTDIR){
124 sp = srvlookup(nil, c->qid.path);
125 if(sp == 0 || sp->chan == 0)
130 if(openmode(omode)!=sp->chan->mode && sp->chan->mode!=ORDWR)
132 devpermcheck(sp->owner, sp->perm, omode);
142 srvcreate(Chan *c, char *name, int omode, ulong perm)
147 if(openmode(omode) != OWRITE)
150 if(strlen(name) >= sizeof(up->genbuf))
153 sp = smalloc(sizeof *sp);
154 sname = smalloc(strlen(name)+1);
163 if(sp == nil || sname == nil)
165 if(srvlookup(name, -1))
168 sp->path = qidpath++;
172 c->qid.type = QTFILE;
173 c->qid.path = sp->path;
178 kstrdup(&sp->owner, up->user);
179 sp->perm = perm&0777;
191 if(c->qid.type == QTDIR)
200 for(sp = *l; sp; sp = sp->link) {
201 if(sp->path == c->qid.path)
210 * Only eve can remove system services.
212 if(strcmp(sp->owner, eve) == 0 && !iseve())
216 * No removing personal services.
218 if((sp->perm&7) != 7 && strcmp(sp->owner, up->user) && !iseve())
233 srvwstat(Chan *c, uchar *dp, int n)
239 if(c->qid.type & QTDIR)
250 sp = srvlookup(nil, c->qid.path);
254 if(strcmp(sp->owner, up->user) != 0 && !iseve())
258 n = convM2D(dp, n, &d, strs);
262 sp->perm = d.mode & 0777;
264 kstrdup(&sp->owner, d.uid);
265 if(d.name && *d.name && strcmp(sp->name, d.name) != 0) {
266 if(strchr(d.name, '/') != nil)
268 if(strlen(d.name) >= sizeof(up->genbuf))
270 kstrdup(&sp->name, d.name);
282 * in theory we need to override any changes in removability
283 * since open, but since all that's checked is the owner,
284 * which is immutable, all is well.
286 if(c->flag & CRCLOSE){
295 srvread(Chan *c, void *va, long n, vlong)
298 return devdirread(c, va, n, 0, 0, srvgen);
302 srvwrite(Chan *c, void *va, long n, vlong)
311 memmove(buf, va, n); /* so we can NUL-terminate */
313 fd = strtoul(buf, 0, 0);
315 c1 = fdtochan(fd, -1, 0, 1); /* error check and inc ref */
323 if(c1->flag & (CCEXEC|CRCLOSE))
324 error("posted fd has remove-on-close or close-on-exec");
325 if(c1->qid.type & QTAUTH)
326 error("cannot post auth file in srv");
327 sp = srvlookup(nil, c->qid.path);
362 srvrenameuser(char *old, char *new)
367 for(sp = srv; sp; sp = sp->link)
368 if(sp->owner!=nil && strcmp(old, sp->owner)==0)
369 kstrdup(&sp->owner, new);