1 7763a61a 2003-11-23 devnull #include "stdinc.h"
  2 7763a61a 2003-11-23 devnull #include <fcall.h>
  3 7763a61a 2003-11-23 devnull #include "vac.h"
  4 7763a61a 2003-11-23 devnull 
  5 ada3d479 2008-06-15 rsc #ifndef PLAN9PORT
  6 ada3d479 2008-06-15 rsc #define convM2Su(a, b, c, d) convM2S(a, b, c)
  7 ada3d479 2008-06-15 rsc #define convS2Mu(a, b, c, d) convS2M(a, b, c)
  8 ada3d479 2008-06-15 rsc #define convM2Du(a, b, c, d) convM2D(a, b, c)
  9 ada3d479 2008-06-15 rsc #define convD2Mu(a, b, c, d) convD2M(a, b, c)
 10 ada3d479 2008-06-15 rsc #endif
 11 ada3d479 2008-06-15 rsc 
 12 7763a61a 2003-11-23 devnull typedef struct Fid Fid;
 13 7763a61a 2003-11-23 devnull 
 14 7763a61a 2003-11-23 devnull enum
 15 7763a61a 2003-11-23 devnull {
 16 cbeb0b26 2006-04-01 devnull 	OPERM	= 0x3		/* mask of all permission types in open mode */
 17 7763a61a 2003-11-23 devnull };
 18 7763a61a 2003-11-23 devnull 
 19 7763a61a 2003-11-23 devnull struct Fid
 20 7763a61a 2003-11-23 devnull {
 21 7763a61a 2003-11-23 devnull 	short busy;
 22 7763a61a 2003-11-23 devnull 	short open;
 23 7763a61a 2003-11-23 devnull 	int fid;
 24 7763a61a 2003-11-23 devnull 	char *user;
 25 7763a61a 2003-11-23 devnull 	Qid qid;
 26 7763a61a 2003-11-23 devnull 	VacFile *file;
 27 64f9764e 2008-06-14 rsc 	VacDirEnum *vde;
 28 7763a61a 2003-11-23 devnull 	Fid	*next;
 29 7763a61a 2003-11-23 devnull };
 30 7763a61a 2003-11-23 devnull 
 31 7763a61a 2003-11-23 devnull enum
 32 7763a61a 2003-11-23 devnull {
 33 7763a61a 2003-11-23 devnull 	Pexec =		1,
 34 7763a61a 2003-11-23 devnull 	Pwrite = 	2,
 35 7763a61a 2003-11-23 devnull 	Pread = 	4,
 36 7763a61a 2003-11-23 devnull 	Pother = 	1,
 37 7763a61a 2003-11-23 devnull 	Pgroup = 	8,
 38 cbeb0b26 2006-04-01 devnull 	Powner =	64
 39 7763a61a 2003-11-23 devnull };
 40 7763a61a 2003-11-23 devnull 
 41 7763a61a 2003-11-23 devnull Fid	*fids;
 42 7763a61a 2003-11-23 devnull uchar	*data;
 43 7763a61a 2003-11-23 devnull int	mfd[2];
 44 ada3d479 2008-06-15 rsc int	srvfd = -1;
 45 7763a61a 2003-11-23 devnull char	*user;
 46 7763a61a 2003-11-23 devnull uchar	mdata[8192+IOHDRSZ];
 47 7763a61a 2003-11-23 devnull int messagesize = sizeof mdata;
 48 7763a61a 2003-11-23 devnull Fcall	rhdr;
 49 7763a61a 2003-11-23 devnull Fcall	thdr;
 50 a20a1468 2005-01-16 devnull VacFs	*fs;
 51 a20a1468 2005-01-16 devnull VtConn  *conn;
 52 7763a61a 2003-11-23 devnull int	noperm;
 53 bbfdd7a6 2005-09-13 devnull int	dotu;
 54 be3e3514 2008-04-17 rsc char *defmnt;
 55 7763a61a 2003-11-23 devnull 
 56 7763a61a 2003-11-23 devnull Fid *	newfid(int);
 57 7763a61a 2003-11-23 devnull void	error(char*);
 58 7763a61a 2003-11-23 devnull void	io(void);
 59 a331ac4c 2005-01-19 devnull void	vacshutdown(void);
 60 7763a61a 2003-11-23 devnull void	usage(void);
 61 7763a61a 2003-11-23 devnull int	perm(Fid*, int);
 62 7763a61a 2003-11-23 devnull int	permf(VacFile*, char*, int);
 63 7763a61a 2003-11-23 devnull ulong	getl(void *p);
 64 7763a61a 2003-11-23 devnull void	init(char*, char*, long, int);
 65 7763a61a 2003-11-23 devnull int	vacdirread(Fid *f, char *p, long off, long cnt);
 66 64f9764e 2008-06-14 rsc int	vacstat(VacFile *parent, VacDir *vd, uchar *p, int np);
 67 a20a1468 2005-01-16 devnull void 	srv(void* a);
 68 7763a61a 2003-11-23 devnull 
 69 a20a1468 2005-01-16 devnull 
 70 7763a61a 2003-11-23 devnull char	*rflush(Fid*), *rversion(Fid*),
 71 7763a61a 2003-11-23 devnull 	*rauth(Fid*), *rattach(Fid*), *rwalk(Fid*),
 72 7763a61a 2003-11-23 devnull 	*ropen(Fid*), *rcreate(Fid*),
 73 7763a61a 2003-11-23 devnull 	*rread(Fid*), *rwrite(Fid*), *rclunk(Fid*),
 74 7763a61a 2003-11-23 devnull 	*rremove(Fid*), *rstat(Fid*), *rwstat(Fid*);
 75 7763a61a 2003-11-23 devnull 
 76 9b3d503b 2005-01-19 devnull char 	*(*fcalls[Tmax])(Fid*);
 77 9b3d503b 2005-01-19 devnull 
 78 9b3d503b 2005-01-19 devnull void
 79 9b3d503b 2005-01-19 devnull initfcalls(void)
 80 9b3d503b 2005-01-19 devnull {
 81 9b3d503b 2005-01-19 devnull 	fcalls[Tflush]=	rflush;
 82 9b3d503b 2005-01-19 devnull 	fcalls[Tversion]=	rversion;
 83 9b3d503b 2005-01-19 devnull 	fcalls[Tattach]=	rattach;
 84 9b3d503b 2005-01-19 devnull 	fcalls[Tauth]=		rauth;
 85 9b3d503b 2005-01-19 devnull 	fcalls[Twalk]=		rwalk;
 86 9b3d503b 2005-01-19 devnull 	fcalls[Topen]=		ropen;
 87 9b3d503b 2005-01-19 devnull 	fcalls[Tcreate]=	rcreate;
 88 9b3d503b 2005-01-19 devnull 	fcalls[Tread]=		rread;
 89 9b3d503b 2005-01-19 devnull 	fcalls[Twrite]=	rwrite;
 90 9b3d503b 2005-01-19 devnull 	fcalls[Tclunk]=	rclunk;
 91 9b3d503b 2005-01-19 devnull 	fcalls[Tremove]=	rremove;
 92 9b3d503b 2005-01-19 devnull 	fcalls[Tstat]=		rstat;
 93 9b3d503b 2005-01-19 devnull 	fcalls[Twstat]=	rwstat;
 94 edefa249 2005-03-15 devnull }
 95 7763a61a 2003-11-23 devnull 
 96 7763a61a 2003-11-23 devnull char	Eperm[] =	"permission denied";
 97 7763a61a 2003-11-23 devnull char	Enotdir[] =	"not a directory";
 98 7763a61a 2003-11-23 devnull char	Enotexist[] =	"file does not exist";
 99 7763a61a 2003-11-23 devnull char	Einuse[] =	"file in use";
100 7763a61a 2003-11-23 devnull char	Eexist[] =	"file exists";
101 7763a61a 2003-11-23 devnull char	Enotowner[] =	"not owner";
102 7763a61a 2003-11-23 devnull char	Eisopen[] = 	"file already open for I/O";
103 7763a61a 2003-11-23 devnull char	Excl[] = 	"exclusive use file already open";
104 7763a61a 2003-11-23 devnull char	Ename[] = 	"illegal name";
105 7763a61a 2003-11-23 devnull char	Erdonly[] = 	"read only file system";
106 7763a61a 2003-11-23 devnull char	Eio[] = 	"i/o error";
107 7763a61a 2003-11-23 devnull char	Eempty[] = 	"directory is not empty";
108 7763a61a 2003-11-23 devnull char	Emode[] =	"illegal mode";
109 7763a61a 2003-11-23 devnull 
110 7763a61a 2003-11-23 devnull int dflag;
111 7763a61a 2003-11-23 devnull 
112 7763a61a 2003-11-23 devnull void
113 7763a61a 2003-11-23 devnull notifyf(void *a, char *s)
114 7763a61a 2003-11-23 devnull {
115 7763a61a 2003-11-23 devnull 	USED(a);
116 7763a61a 2003-11-23 devnull 	if(strncmp(s, "interrupt", 9) == 0)
117 7763a61a 2003-11-23 devnull 		noted(NCONT);
118 7763a61a 2003-11-23 devnull 	noted(NDFLT);
119 7763a61a 2003-11-23 devnull }
120 7763a61a 2003-11-23 devnull 
121 75d04888 2009-05-25 rsc #define TWID64 ~(u64int)0
122 75d04888 2009-05-25 rsc static u64int
123 75d04888 2009-05-25 rsc unittoull(char *s)
124 75d04888 2009-05-25 rsc {
125 75d04888 2009-05-25 rsc 	char *es;
126 75d04888 2009-05-25 rsc 	u64int n;
127 75d04888 2009-05-25 rsc 
128 75d04888 2009-05-25 rsc 	if(s == nil)
129 75d04888 2009-05-25 rsc 		return TWID64;
130 75d04888 2009-05-25 rsc 	n = strtoul(s, &es, 0);
131 75d04888 2009-05-25 rsc 	if(*es == 'k' || *es == 'K'){
132 75d04888 2009-05-25 rsc 		n *= 1024;
133 75d04888 2009-05-25 rsc 		es++;
134 75d04888 2009-05-25 rsc 	}else if(*es == 'm' || *es == 'M'){
135 75d04888 2009-05-25 rsc 		n *= 1024*1024;
136 75d04888 2009-05-25 rsc 		es++;
137 75d04888 2009-05-25 rsc 	}else if(*es == 'g' || *es == 'G'){
138 75d04888 2009-05-25 rsc 		n *= 1024*1024*1024;
139 75d04888 2009-05-25 rsc 		es++;
140 75d04888 2009-05-25 rsc 	}
141 75d04888 2009-05-25 rsc 	if(*es != '\0')
142 75d04888 2009-05-25 rsc 		return TWID64;
143 75d04888 2009-05-25 rsc 	return n;
144 75d04888 2009-05-25 rsc }
145 75d04888 2009-05-25 rsc 
146 7763a61a 2003-11-23 devnull void
147 a20a1468 2005-01-16 devnull threadmain(int argc, char *argv[])
148 7763a61a 2003-11-23 devnull {
149 ada3d479 2008-06-15 rsc 	char *defsrv, *srvname;
150 ada3d479 2008-06-15 rsc 	int p[2], fd;
151 ada3d479 2008-06-15 rsc 	int stdio;
152 7763a61a 2003-11-23 devnull 	char *host = nil;
153 75d04888 2009-05-25 rsc 	ulong mem;
154 7763a61a 2003-11-23 devnull 
155 75d04888 2009-05-25 rsc 	mem = 16<<20;
156 ada3d479 2008-06-15 rsc 	stdio = 0;
157 23fb2edb 2005-07-24 devnull 	fmtinstall('H', encodefmt);
158 23fb2edb 2005-07-24 devnull 	fmtinstall('V', vtscorefmt);
159 23fb2edb 2005-07-24 devnull 	fmtinstall('F', vtfcallfmt);
160 23fb2edb 2005-07-24 devnull 	
161 ada3d479 2008-06-15 rsc 	defmnt = nil;
162 91124c1b 2005-01-16 devnull 	defsrv = nil;
163 7763a61a 2003-11-23 devnull 	ARGBEGIN{
164 7763a61a 2003-11-23 devnull 	case 'd':
165 7763a61a 2003-11-23 devnull 		fmtinstall('F', fcallfmt);
166 7763a61a 2003-11-23 devnull 		dflag = 1;
167 7763a61a 2003-11-23 devnull 		break;
168 7763a61a 2003-11-23 devnull 	case 'i':
169 ada3d479 2008-06-15 rsc 		defmnt = nil;
170 7763a61a 2003-11-23 devnull 		stdio = 1;
171 7763a61a 2003-11-23 devnull 		mfd[0] = 0;
172 7763a61a 2003-11-23 devnull 		mfd[1] = 1;
173 7763a61a 2003-11-23 devnull 		break;
174 7763a61a 2003-11-23 devnull 	case 'h':
175 32053cdf 2005-01-16 devnull 		host = EARGF(usage());
176 7763a61a 2003-11-23 devnull 		break;
177 ada3d479 2008-06-15 rsc 	case 'S':
178 32053cdf 2005-01-16 devnull 		defsrv = EARGF(usage());
179 7763a61a 2003-11-23 devnull 		break;
180 ada3d479 2008-06-15 rsc 	case 's':
181 ada3d479 2008-06-15 rsc 		defsrv = "vacfs";
182 75d04888 2009-05-25 rsc 		break;
183 75d04888 2009-05-25 rsc 	case 'M':
184 75d04888 2009-05-25 rsc 		mem = unittoull(EARGF(usage()));
185 ada3d479 2008-06-15 rsc 		break;
186 be3e3514 2008-04-17 rsc 	case 'm':
187 be3e3514 2008-04-17 rsc 		defmnt = EARGF(usage());
188 be3e3514 2008-04-17 rsc 		break;
189 7763a61a 2003-11-23 devnull 	case 'p':
190 7763a61a 2003-11-23 devnull 		noperm = 1;
191 7763a61a 2003-11-23 devnull 		break;
192 23fb2edb 2005-07-24 devnull 	case 'V':
193 23fb2edb 2005-07-24 devnull 		chattyventi = 1;
194 23fb2edb 2005-07-24 devnull 		break;
195 7763a61a 2003-11-23 devnull 	default:
196 7763a61a 2003-11-23 devnull 		usage();
197 7763a61a 2003-11-23 devnull 	}ARGEND
198 7763a61a 2003-11-23 devnull 
199 7763a61a 2003-11-23 devnull 	if(argc != 1)
200 7763a61a 2003-11-23 devnull 		usage();
201 7763a61a 2003-11-23 devnull 
202 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
203 ada3d479 2008-06-15 rsc 	if(defsrv == nil && defmnt == nil && !stdio){
204 ada3d479 2008-06-15 rsc 		srvname = strchr(argv[0], '/');
205 ada3d479 2008-06-15 rsc 		if(srvname)
206 ada3d479 2008-06-15 rsc 			srvname++;
207 ada3d479 2008-06-15 rsc 		else
208 ada3d479 2008-06-15 rsc 			srvname = argv[0];
209 ada3d479 2008-06-15 rsc 		defsrv = vtmalloc(6+strlen(srvname)+1);
210 ada3d479 2008-06-15 rsc 		strcpy(defsrv, "vacfs.");
211 ada3d479 2008-06-15 rsc 		strcat(defsrv, srvname);
212 ada3d479 2008-06-15 rsc 		if(strcmp(defsrv+strlen(defsrv)-4, ".vac") == 0)
213 ada3d479 2008-06-15 rsc 			defsrv[strlen(defsrv)-4] = 0;
214 ada3d479 2008-06-15 rsc 	}
215 ada3d479 2008-06-15 rsc #else
216 ada3d479 2008-06-15 rsc 	if(defsrv == nil && defmnt == nil && !stdio)
217 ada3d479 2008-06-15 rsc 		defmnt = "/n/vac";
218 ada3d479 2008-06-15 rsc #endif
219 ada3d479 2008-06-15 rsc 	if(stdio && defmnt)
220 ada3d479 2008-06-15 rsc 		sysfatal("cannot use -m with -i");
221 ada3d479 2008-06-15 rsc 
222 9b3d503b 2005-01-19 devnull 	initfcalls();
223 7763a61a 2003-11-23 devnull 
224 64f9764e 2008-06-14 rsc 	notify(notifyf);
225 64f9764e 2008-06-14 rsc 	user = getuser();
226 64f9764e 2008-06-14 rsc 
227 64f9764e 2008-06-14 rsc 	conn = vtdial(host);
228 64f9764e 2008-06-14 rsc 	if(conn == nil)
229 64f9764e 2008-06-14 rsc 		sysfatal("could not connect to server: %r");
230 64f9764e 2008-06-14 rsc 
231 64f9764e 2008-06-14 rsc 	if(vtconnect(conn) < 0)
232 64f9764e 2008-06-14 rsc 		sysfatal("vtconnect: %r");
233 64f9764e 2008-06-14 rsc 
234 75d04888 2009-05-25 rsc 	fs = vacfsopen(conn, argv[0], VtOREAD, mem);
235 64f9764e 2008-06-14 rsc 	if(fs == nil)
236 64f9764e 2008-06-14 rsc 		sysfatal("vacfsopen: %r");
237 64f9764e 2008-06-14 rsc 
238 ada3d479 2008-06-15 rsc 	if(!stdio){
239 ada3d479 2008-06-15 rsc 		if(pipe(p) < 0)
240 ada3d479 2008-06-15 rsc 			sysfatal("pipe failed: %r");
241 ada3d479 2008-06-15 rsc 		mfd[0] = p[0];
242 ada3d479 2008-06-15 rsc 		mfd[1] = p[0];
243 ada3d479 2008-06-15 rsc 		srvfd = p[1];
244 91124c1b 2005-01-16 devnull 	}
245 91124c1b 2005-01-16 devnull 
246 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
247 ada3d479 2008-06-15 rsc 	USED(fd);
248 ada3d479 2008-06-15 rsc 	proccreate(srv, 0, 32 * 1024);
249 44c6e39c 2009-07-26 rsc 	if(!stdio && post9pservice(p[1], defsrv, defmnt) < 0)
250 a20a1468 2005-01-16 devnull 		sysfatal("post9pservice");
251 ada3d479 2008-06-15 rsc #else
252 ada3d479 2008-06-15 rsc 	procrfork(srv, 0, 32 * 1024, RFFDG|RFNAMEG|RFNOTEG);
253 a20a1468 2005-01-16 devnull 
254 ada3d479 2008-06-15 rsc 	if(!stdio){
255 ada3d479 2008-06-15 rsc 		close(p[0]);
256 ada3d479 2008-06-15 rsc 		if(defsrv){
257 ada3d479 2008-06-15 rsc 			srvname = smprint("/srv/%s", defsrv);
258 ada3d479 2008-06-15 rsc 			fd = create(srvname, OWRITE|ORCLOSE, 0666);
259 ada3d479 2008-06-15 rsc 			if(fd < 0)
260 ada3d479 2008-06-15 rsc 				sysfatal("create %s: %r", srvname);
261 ada3d479 2008-06-15 rsc 			if(fprint(fd, "%d", srvfd) < 0)
262 ada3d479 2008-06-15 rsc 				sysfatal("write %s: %r", srvname);
263 ada3d479 2008-06-15 rsc 			free(srvname);
264 ada3d479 2008-06-15 rsc 		}
265 ada3d479 2008-06-15 rsc 		if(defmnt){
266 ada3d479 2008-06-15 rsc 			if(mount(srvfd, -1, defmnt, MREPL|MCREATE, "") < 0)
267 ada3d479 2008-06-15 rsc 				sysfatal("mount %s: %r", defmnt);
268 ada3d479 2008-06-15 rsc 		}
269 ada3d479 2008-06-15 rsc 	}
270 ada3d479 2008-06-15 rsc #endif
271 a20a1468 2005-01-16 devnull 	threadexits(0);
272 7763a61a 2003-11-23 devnull }
273 7763a61a 2003-11-23 devnull 
274 a331ac4c 2005-01-19 devnull void
275 a331ac4c 2005-01-19 devnull srv(void *a)
276 a331ac4c 2005-01-19 devnull {
277 ada3d479 2008-06-15 rsc 	USED(a);
278 a20a1468 2005-01-16 devnull 	io();
279 a331ac4c 2005-01-19 devnull 	vacshutdown();
280 a20a1468 2005-01-16 devnull }
281 a20a1468 2005-01-16 devnull 
282 7763a61a 2003-11-23 devnull void
283 7763a61a 2003-11-23 devnull usage(void)
284 7763a61a 2003-11-23 devnull {
285 7763a61a 2003-11-23 devnull 	fprint(2, "usage: %s [-sd] [-h host] [-c ncache] [-m mountpoint] vacfile\n", argv0);
286 38c10d1a 2005-01-17 devnull 	threadexitsall("usage");
287 7763a61a 2003-11-23 devnull }
288 7763a61a 2003-11-23 devnull 
289 7763a61a 2003-11-23 devnull char*
290 7763a61a 2003-11-23 devnull rversion(Fid *unused)
291 7763a61a 2003-11-23 devnull {
292 7763a61a 2003-11-23 devnull 	Fid *f;
293 7763a61a 2003-11-23 devnull 
294 7763a61a 2003-11-23 devnull 	USED(unused);
295 7763a61a 2003-11-23 devnull 
296 7763a61a 2003-11-23 devnull 	for(f = fids; f; f = f->next)
297 7763a61a 2003-11-23 devnull 		if(f->busy)
298 7763a61a 2003-11-23 devnull 			rclunk(f);
299 7763a61a 2003-11-23 devnull 
300 7763a61a 2003-11-23 devnull 	if(rhdr.msize < 256)
301 a20a1468 2005-01-16 devnull 		return vtstrdup("version: message size too small");
302 7763a61a 2003-11-23 devnull 	messagesize = rhdr.msize;
303 7763a61a 2003-11-23 devnull 	if(messagesize > sizeof mdata)
304 7763a61a 2003-11-23 devnull 		messagesize = sizeof mdata;
305 7763a61a 2003-11-23 devnull 	thdr.msize = messagesize;
306 7763a61a 2003-11-23 devnull 	if(strncmp(rhdr.version, "9P2000", 6) != 0)
307 a20a1468 2005-01-16 devnull 		return vtstrdup("unrecognized 9P version");
308 7763a61a 2003-11-23 devnull 	thdr.version = "9P2000";
309 bbfdd7a6 2005-09-13 devnull 	if(strncmp(rhdr.version, "9P2000.u", 8) == 0){
310 bbfdd7a6 2005-09-13 devnull 		dotu = 1;
311 bbfdd7a6 2005-09-13 devnull 		thdr.version = "9P2000.u";
312 bbfdd7a6 2005-09-13 devnull 	}
313 7763a61a 2003-11-23 devnull 	return nil;
314 7763a61a 2003-11-23 devnull }
315 7763a61a 2003-11-23 devnull 
316 7763a61a 2003-11-23 devnull char*
317 7763a61a 2003-11-23 devnull rflush(Fid *f)
318 7763a61a 2003-11-23 devnull {
319 7763a61a 2003-11-23 devnull 	USED(f);
320 7763a61a 2003-11-23 devnull 	return 0;
321 7763a61a 2003-11-23 devnull }
322 7763a61a 2003-11-23 devnull 
323 7763a61a 2003-11-23 devnull char*
324 7763a61a 2003-11-23 devnull rauth(Fid *f)
325 7763a61a 2003-11-23 devnull {
326 7763a61a 2003-11-23 devnull 	USED(f);
327 a20a1468 2005-01-16 devnull 	return vtstrdup("vacfs: authentication not required");
328 7763a61a 2003-11-23 devnull }
329 7763a61a 2003-11-23 devnull 
330 7763a61a 2003-11-23 devnull char*
331 7763a61a 2003-11-23 devnull rattach(Fid *f)
332 7763a61a 2003-11-23 devnull {
333 7763a61a 2003-11-23 devnull 	/* no authentication for the momment */
334 7763a61a 2003-11-23 devnull 	VacFile *file;
335 a20a1468 2005-01-16 devnull 	char err[80];
336 7763a61a 2003-11-23 devnull 
337 a20a1468 2005-01-16 devnull 	file = vacfsgetroot(fs);
338 a20a1468 2005-01-16 devnull 	if(file == nil) {
339 a20a1468 2005-01-16 devnull 		rerrstr(err, sizeof err);
340 a20a1468 2005-01-16 devnull 		return vtstrdup(err);
341 a20a1468 2005-01-16 devnull 	}
342 a20a1468 2005-01-16 devnull 
343 7763a61a 2003-11-23 devnull 	f->busy = 1;
344 7763a61a 2003-11-23 devnull 	f->file = file;
345 9b3d503b 2005-01-19 devnull 	f->qid.path = vacfilegetid(f->file);
346 9b3d503b 2005-01-19 devnull 	f->qid.vers = 0;
347 9b3d503b 2005-01-19 devnull 	f->qid.type = QTDIR;
348 7763a61a 2003-11-23 devnull 	thdr.qid = f->qid;
349 7763a61a 2003-11-23 devnull 	if(rhdr.uname[0])
350 a20a1468 2005-01-16 devnull 		f->user = vtstrdup(rhdr.uname);
351 7763a61a 2003-11-23 devnull 	else
352 7763a61a 2003-11-23 devnull 		f->user = "none";
353 7763a61a 2003-11-23 devnull 	return 0;
354 7763a61a 2003-11-23 devnull }
355 7763a61a 2003-11-23 devnull 
356 7763a61a 2003-11-23 devnull char*
357 7763a61a 2003-11-23 devnull rwalk(Fid *f)
358 7763a61a 2003-11-23 devnull {
359 7763a61a 2003-11-23 devnull 	VacFile *file, *nfile;
360 7763a61a 2003-11-23 devnull 	Fid *nf;
361 7763a61a 2003-11-23 devnull 	int nqid, nwname;
362 7763a61a 2003-11-23 devnull 	Qid qid;
363 a20a1468 2005-01-16 devnull 	char *err = nil;
364 7763a61a 2003-11-23 devnull 
365 7763a61a 2003-11-23 devnull 	if(f->busy == 0)
366 7763a61a 2003-11-23 devnull 		return Enotexist;
367 7763a61a 2003-11-23 devnull 	nf = nil;
368 7763a61a 2003-11-23 devnull 	if(rhdr.fid != rhdr.newfid){
369 7763a61a 2003-11-23 devnull 		if(f->open)
370 a20a1468 2005-01-16 devnull 			return vtstrdup(Eisopen);
371 7763a61a 2003-11-23 devnull 		if(f->busy == 0)
372 a20a1468 2005-01-16 devnull 			return vtstrdup(Enotexist);
373 7763a61a 2003-11-23 devnull 		nf = newfid(rhdr.newfid);
374 7763a61a 2003-11-23 devnull 		if(nf->busy)
375 a20a1468 2005-01-16 devnull 			return vtstrdup(Eisopen);
376 7763a61a 2003-11-23 devnull 		nf->busy = 1;
377 7763a61a 2003-11-23 devnull 		nf->open = 0;
378 7763a61a 2003-11-23 devnull 		nf->qid = f->qid;
379 a20a1468 2005-01-16 devnull 		nf->file = vacfileincref(f->file);
380 a20a1468 2005-01-16 devnull 		nf->user = vtstrdup(f->user);
381 7763a61a 2003-11-23 devnull 		f = nf;
382 7763a61a 2003-11-23 devnull 	}
383 7763a61a 2003-11-23 devnull 
384 7763a61a 2003-11-23 devnull 	nwname = rhdr.nwname;
385 7763a61a 2003-11-23 devnull 
386 7763a61a 2003-11-23 devnull 	/* easy case */
387 7763a61a 2003-11-23 devnull 	if(nwname == 0) {
388 7763a61a 2003-11-23 devnull 		thdr.nwqid = 0;
389 7763a61a 2003-11-23 devnull 		return 0;
390 7763a61a 2003-11-23 devnull 	}
391 7763a61a 2003-11-23 devnull 
392 7763a61a 2003-11-23 devnull 	file = f->file;
393 a20a1468 2005-01-16 devnull 	vacfileincref(file);
394 7763a61a 2003-11-23 devnull 	qid = f->qid;
395 7763a61a 2003-11-23 devnull 
396 7763a61a 2003-11-23 devnull 	for(nqid = 0; nqid < nwname; nqid++){
397 7763a61a 2003-11-23 devnull 		if((qid.type & QTDIR) == 0){
398 a20a1468 2005-01-16 devnull 			err = Enotdir;
399 7763a61a 2003-11-23 devnull 			break;
400 7763a61a 2003-11-23 devnull 		}
401 7763a61a 2003-11-23 devnull 		if(!permf(file, f->user, Pexec)) {
402 a20a1468 2005-01-16 devnull 			err = Eperm;
403 7763a61a 2003-11-23 devnull 			break;
404 7763a61a 2003-11-23 devnull 		}
405 64f9764e 2008-06-14 rsc 		nfile = vacfilewalk(file, rhdr.wname[nqid]);
406 7763a61a 2003-11-23 devnull 		if(nfile == nil)
407 7763a61a 2003-11-23 devnull 			break;
408 a20a1468 2005-01-16 devnull 		vacfiledecref(file);
409 7763a61a 2003-11-23 devnull 		file = nfile;
410 7763a61a 2003-11-23 devnull 		qid.type = QTFILE;
411 a20a1468 2005-01-16 devnull 		if(vacfileisdir(file))
412 7763a61a 2003-11-23 devnull 			qid.type = QTDIR;
413 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
414 bbfdd7a6 2005-09-13 devnull 		if(vacfilegetmode(file)&ModeLink)
415 bbfdd7a6 2005-09-13 devnull 			qid.type = QTSYMLINK;
416 ada3d479 2008-06-15 rsc #endif
417 a20a1468 2005-01-16 devnull 		qid.vers = vacfilegetmcount(file);
418 a20a1468 2005-01-16 devnull 		qid.path = vacfilegetid(file);
419 7763a61a 2003-11-23 devnull 		thdr.wqid[nqid] = qid;
420 7763a61a 2003-11-23 devnull 	}
421 7763a61a 2003-11-23 devnull 
422 7763a61a 2003-11-23 devnull 	thdr.nwqid = nqid;
423 7763a61a 2003-11-23 devnull 
424 7763a61a 2003-11-23 devnull 	if(nqid == nwname){
425 7763a61a 2003-11-23 devnull 		/* success */
426 7763a61a 2003-11-23 devnull 		f->qid = thdr.wqid[nqid-1];
427 a20a1468 2005-01-16 devnull 		vacfiledecref(f->file);
428 7763a61a 2003-11-23 devnull 		f->file = file;
429 7763a61a 2003-11-23 devnull 		return 0;
430 7763a61a 2003-11-23 devnull 	}
431 7763a61a 2003-11-23 devnull 
432 a20a1468 2005-01-16 devnull 	vacfiledecref(file);
433 7763a61a 2003-11-23 devnull 	if(nf != nil)
434 7763a61a 2003-11-23 devnull 		rclunk(nf);
435 7763a61a 2003-11-23 devnull 
436 7763a61a 2003-11-23 devnull 	/* only error on the first element */
437 7763a61a 2003-11-23 devnull 	if(nqid == 0)
438 a20a1468 2005-01-16 devnull 		return vtstrdup(err);
439 7763a61a 2003-11-23 devnull 
440 7763a61a 2003-11-23 devnull 	return 0;
441 7763a61a 2003-11-23 devnull }
442 7763a61a 2003-11-23 devnull 
443 7763a61a 2003-11-23 devnull char *
444 7763a61a 2003-11-23 devnull ropen(Fid *f)
445 7763a61a 2003-11-23 devnull {
446 7763a61a 2003-11-23 devnull 	int mode, trunc;
447 7763a61a 2003-11-23 devnull 
448 7763a61a 2003-11-23 devnull 	if(f->open)
449 a20a1468 2005-01-16 devnull 		return vtstrdup(Eisopen);
450 7763a61a 2003-11-23 devnull 	if(!f->busy)
451 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotexist);
452 a20a1468 2005-01-16 devnull 
453 7763a61a 2003-11-23 devnull 	mode = rhdr.mode;
454 7763a61a 2003-11-23 devnull 	thdr.iounit = messagesize - IOHDRSZ;
455 7763a61a 2003-11-23 devnull 	if(f->qid.type & QTDIR){
456 7763a61a 2003-11-23 devnull 		if(mode != OREAD)
457 a20a1468 2005-01-16 devnull 			return vtstrdup(Eperm);
458 7763a61a 2003-11-23 devnull 		if(!perm(f, Pread))
459 a20a1468 2005-01-16 devnull 			return vtstrdup(Eperm);
460 7763a61a 2003-11-23 devnull 		thdr.qid = f->qid;
461 64f9764e 2008-06-14 rsc 		f->vde = nil;
462 7763a61a 2003-11-23 devnull 		f->open = 1;
463 7763a61a 2003-11-23 devnull 		return 0;
464 7763a61a 2003-11-23 devnull 	}
465 7763a61a 2003-11-23 devnull 	if(mode & ORCLOSE)
466 a20a1468 2005-01-16 devnull 		return vtstrdup(Erdonly);
467 7763a61a 2003-11-23 devnull 	trunc = mode & OTRUNC;
468 7763a61a 2003-11-23 devnull 	mode &= OPERM;
469 7763a61a 2003-11-23 devnull 	if(mode==OWRITE || mode==ORDWR || trunc)
470 7763a61a 2003-11-23 devnull 		if(!perm(f, Pwrite))
471 a20a1468 2005-01-16 devnull 			return vtstrdup(Eperm);
472 7763a61a 2003-11-23 devnull 	if(mode==OREAD || mode==ORDWR)
473 7763a61a 2003-11-23 devnull 		if(!perm(f, Pread))
474 a20a1468 2005-01-16 devnull 			return vtstrdup(Eperm);
475 7763a61a 2003-11-23 devnull 	if(mode==OEXEC)
476 7763a61a 2003-11-23 devnull 		if(!perm(f, Pexec))
477 a20a1468 2005-01-16 devnull 			return vtstrdup(Eperm);
478 7763a61a 2003-11-23 devnull 	thdr.qid = f->qid;
479 7763a61a 2003-11-23 devnull 	thdr.iounit = messagesize - IOHDRSZ;
480 7763a61a 2003-11-23 devnull 	f->open = 1;
481 7763a61a 2003-11-23 devnull 	return 0;
482 7763a61a 2003-11-23 devnull }
483 7763a61a 2003-11-23 devnull 
484 7763a61a 2003-11-23 devnull char*
485 7763a61a 2003-11-23 devnull rcreate(Fid* fid)
486 7763a61a 2003-11-23 devnull {
487 7763a61a 2003-11-23 devnull 	VacFile *vf;
488 7763a61a 2003-11-23 devnull 	ulong mode;
489 7763a61a 2003-11-23 devnull 
490 7763a61a 2003-11-23 devnull 	if(fid->open)
491 a20a1468 2005-01-16 devnull 		return vtstrdup(Eisopen);
492 7763a61a 2003-11-23 devnull 	if(!fid->busy)
493 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotexist);
494 a20a1468 2005-01-16 devnull 	if(fs->mode & ModeSnapshot)
495 a20a1468 2005-01-16 devnull 		return vtstrdup(Erdonly);
496 7763a61a 2003-11-23 devnull 	vf = fid->file;
497 a20a1468 2005-01-16 devnull 	if(!vacfileisdir(vf))
498 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotdir);
499 7763a61a 2003-11-23 devnull 	if(!permf(vf, fid->user, Pwrite))
500 a20a1468 2005-01-16 devnull 		return vtstrdup(Eperm);
501 7763a61a 2003-11-23 devnull 
502 7763a61a 2003-11-23 devnull 	mode = rhdr.perm & 0777;
503 7763a61a 2003-11-23 devnull 
504 7763a61a 2003-11-23 devnull 	if(rhdr.perm & DMDIR){
505 7763a61a 2003-11-23 devnull 		if((rhdr.mode & OTRUNC) || (rhdr.perm & DMAPPEND))
506 a20a1468 2005-01-16 devnull 			return vtstrdup(Emode);
507 7763a61a 2003-11-23 devnull 		switch(rhdr.mode & OPERM){
508 7763a61a 2003-11-23 devnull 		default:
509 a20a1468 2005-01-16 devnull 			return vtstrdup(Emode);
510 7763a61a 2003-11-23 devnull 		case OEXEC:
511 7763a61a 2003-11-23 devnull 		case OREAD:
512 7763a61a 2003-11-23 devnull 			break;
513 7763a61a 2003-11-23 devnull 		case OWRITE:
514 7763a61a 2003-11-23 devnull 		case ORDWR:
515 a20a1468 2005-01-16 devnull 			return vtstrdup(Eperm);
516 7763a61a 2003-11-23 devnull 		}
517 7763a61a 2003-11-23 devnull 		mode |= ModeDir;
518 7763a61a 2003-11-23 devnull 	}
519 ecc0a1b0 2008-06-15 rsc 	vf = vacfilecreate(vf, rhdr.name, mode);
520 a20a1468 2005-01-16 devnull 	if(vf == nil) {
521 a20a1468 2005-01-16 devnull 		char err[80];
522 a20a1468 2005-01-16 devnull 		rerrstr(err, sizeof err);
523 7763a61a 2003-11-23 devnull 
524 a20a1468 2005-01-16 devnull 		return vtstrdup(err);
525 a20a1468 2005-01-16 devnull 	}
526 a20a1468 2005-01-16 devnull 
527 a20a1468 2005-01-16 devnull 	vacfiledecref(fid->file);
528 a20a1468 2005-01-16 devnull 
529 7763a61a 2003-11-23 devnull 	fid->file = vf;
530 7763a61a 2003-11-23 devnull 	fid->qid.type = QTFILE;
531 a20a1468 2005-01-16 devnull 	if(vacfileisdir(vf))
532 7763a61a 2003-11-23 devnull 		fid->qid.type = QTDIR;
533 a20a1468 2005-01-16 devnull 	fid->qid.vers = vacfilegetmcount(vf);
534 a20a1468 2005-01-16 devnull 	fid->qid.path = vacfilegetid(vf);
535 7763a61a 2003-11-23 devnull 
536 7763a61a 2003-11-23 devnull 	thdr.qid = fid->qid;
537 7763a61a 2003-11-23 devnull 	thdr.iounit = messagesize - IOHDRSZ;
538 7763a61a 2003-11-23 devnull 
539 7763a61a 2003-11-23 devnull 	return 0;
540 7763a61a 2003-11-23 devnull }
541 7763a61a 2003-11-23 devnull 
542 7763a61a 2003-11-23 devnull char*
543 7763a61a 2003-11-23 devnull rread(Fid *f)
544 7763a61a 2003-11-23 devnull {
545 7763a61a 2003-11-23 devnull 	char *buf;
546 7763a61a 2003-11-23 devnull 	vlong off;
547 7763a61a 2003-11-23 devnull 	int cnt;
548 7763a61a 2003-11-23 devnull 	VacFile *vf;
549 a20a1468 2005-01-16 devnull 	char err[80];
550 7763a61a 2003-11-23 devnull 	int n;
551 7763a61a 2003-11-23 devnull 
552 7763a61a 2003-11-23 devnull 	if(!f->busy)
553 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotexist);
554 7763a61a 2003-11-23 devnull 	vf = f->file;
555 7763a61a 2003-11-23 devnull 	thdr.count = 0;
556 7763a61a 2003-11-23 devnull 	off = rhdr.offset;
557 7763a61a 2003-11-23 devnull 	buf = thdr.data;
558 7763a61a 2003-11-23 devnull 	cnt = rhdr.count;
559 7763a61a 2003-11-23 devnull 	if(f->qid.type & QTDIR)
560 7763a61a 2003-11-23 devnull 		n = vacdirread(f, buf, off, cnt);
561 bbfdd7a6 2005-09-13 devnull 	else if(vacfilegetmode(f->file)&ModeDevice)
562 bbfdd7a6 2005-09-13 devnull 		return vtstrdup("device");
563 bbfdd7a6 2005-09-13 devnull 	else if(vacfilegetmode(f->file)&ModeLink)
564 bbfdd7a6 2005-09-13 devnull 		return vtstrdup("symbolic link");
565 bbfdd7a6 2005-09-13 devnull 	else if(vacfilegetmode(f->file)&ModeNamedPipe)
566 bbfdd7a6 2005-09-13 devnull 		return vtstrdup("named pipe");
567 7763a61a 2003-11-23 devnull 	else
568 a20a1468 2005-01-16 devnull 		n = vacfileread(vf, buf, cnt, off);
569 7763a61a 2003-11-23 devnull 	if(n < 0) {
570 a20a1468 2005-01-16 devnull 		rerrstr(err, sizeof err);
571 a20a1468 2005-01-16 devnull 		return vtstrdup(err);
572 7763a61a 2003-11-23 devnull 	}
573 7763a61a 2003-11-23 devnull 	thdr.count = n;
574 7763a61a 2003-11-23 devnull 	return 0;
575 7763a61a 2003-11-23 devnull }
576 7763a61a 2003-11-23 devnull 
577 7763a61a 2003-11-23 devnull char*
578 7763a61a 2003-11-23 devnull rwrite(Fid *f)
579 7763a61a 2003-11-23 devnull {
580 ada3d479 2008-06-15 rsc 	USED(f);
581 c52cda30 2008-06-14 rsc 	return vtstrdup(Erdonly);
582 7763a61a 2003-11-23 devnull }
583 7763a61a 2003-11-23 devnull 
584 7763a61a 2003-11-23 devnull char *
585 7763a61a 2003-11-23 devnull rclunk(Fid *f)
586 7763a61a 2003-11-23 devnull {
587 7763a61a 2003-11-23 devnull 	f->busy = 0;
588 7763a61a 2003-11-23 devnull 	f->open = 0;
589 a20a1468 2005-01-16 devnull 	vtfree(f->user);
590 7763a61a 2003-11-23 devnull 	f->user = nil;
591 9e2f1d9b 2005-11-21 devnull 	if(f->file)
592 9e2f1d9b 2005-11-21 devnull 		vacfiledecref(f->file);
593 7763a61a 2003-11-23 devnull 	f->file = nil;
594 64f9764e 2008-06-14 rsc 	vdeclose(f->vde);
595 64f9764e 2008-06-14 rsc 	f->vde = nil;
596 7763a61a 2003-11-23 devnull 	return 0;
597 7763a61a 2003-11-23 devnull }
598 7763a61a 2003-11-23 devnull 
599 7763a61a 2003-11-23 devnull char *
600 7763a61a 2003-11-23 devnull rremove(Fid *f)
601 7763a61a 2003-11-23 devnull {
602 7763a61a 2003-11-23 devnull 	VacFile *vf, *vfp;
603 a20a1468 2005-01-16 devnull 	char errbuf[80];
604 7763a61a 2003-11-23 devnull 	char *err = nil;
605 7763a61a 2003-11-23 devnull 
606 7763a61a 2003-11-23 devnull 	if(!f->busy)
607 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotexist);
608 7763a61a 2003-11-23 devnull 	vf = f->file;
609 a20a1468 2005-01-16 devnull 	vfp = vacfilegetparent(vf);
610 7763a61a 2003-11-23 devnull 
611 7763a61a 2003-11-23 devnull 	if(!permf(vfp, f->user, Pwrite)) {
612 7763a61a 2003-11-23 devnull 		err = Eperm;
613 7763a61a 2003-11-23 devnull 		goto Exit;
614 7763a61a 2003-11-23 devnull 	}
615 7763a61a 2003-11-23 devnull 
616 ecc0a1b0 2008-06-15 rsc 	if(!vacfileremove(vf)) {
617 a20a1468 2005-01-16 devnull 		rerrstr(errbuf, sizeof errbuf);
618 a20a1468 2005-01-16 devnull 		err = errbuf;
619 7763a61a 2003-11-23 devnull 	}
620 7763a61a 2003-11-23 devnull 
621 7763a61a 2003-11-23 devnull Exit:
622 a20a1468 2005-01-16 devnull 	vacfiledecref(vfp);
623 7763a61a 2003-11-23 devnull 	rclunk(f);
624 a20a1468 2005-01-16 devnull 	return vtstrdup(err);
625 7763a61a 2003-11-23 devnull }
626 7763a61a 2003-11-23 devnull 
627 7763a61a 2003-11-23 devnull char *
628 7763a61a 2003-11-23 devnull rstat(Fid *f)
629 7763a61a 2003-11-23 devnull {
630 7763a61a 2003-11-23 devnull 	VacDir dir;
631 7763a61a 2003-11-23 devnull 	static uchar statbuf[1024];
632 bbfdd7a6 2005-09-13 devnull 	VacFile *parent;
633 bbfdd7a6 2005-09-13 devnull 	
634 7763a61a 2003-11-23 devnull 	if(!f->busy)
635 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotexist);
636 bbfdd7a6 2005-09-13 devnull 	parent = vacfilegetparent(f->file);
637 a20a1468 2005-01-16 devnull 	vacfilegetdir(f->file, &dir);
638 7763a61a 2003-11-23 devnull 	thdr.stat = statbuf;
639 64f9764e 2008-06-14 rsc 	thdr.nstat = vacstat(parent, &dir, thdr.stat, sizeof statbuf);
640 a20a1468 2005-01-16 devnull 	vdcleanup(&dir);
641 bbfdd7a6 2005-09-13 devnull 	vacfiledecref(parent);
642 7763a61a 2003-11-23 devnull 	return 0;
643 7763a61a 2003-11-23 devnull }
644 7763a61a 2003-11-23 devnull 
645 7763a61a 2003-11-23 devnull char *
646 7763a61a 2003-11-23 devnull rwstat(Fid *f)
647 7763a61a 2003-11-23 devnull {
648 7763a61a 2003-11-23 devnull 	if(!f->busy)
649 a20a1468 2005-01-16 devnull 		return vtstrdup(Enotexist);
650 a20a1468 2005-01-16 devnull 	return vtstrdup(Erdonly);
651 7763a61a 2003-11-23 devnull }
652 7763a61a 2003-11-23 devnull 
653 7763a61a 2003-11-23 devnull int
654 64f9764e 2008-06-14 rsc vacstat(VacFile *parent, VacDir *vd, uchar *p, int np)
655 7763a61a 2003-11-23 devnull {
656 ada3d479 2008-06-15 rsc 	int ret;
657 7763a61a 2003-11-23 devnull 	Dir dir;
658 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
659 ada3d479 2008-06-15 rsc 	int n;
660 bbfdd7a6 2005-09-13 devnull 	VacFile *vf;
661 ada3d479 2008-06-15 rsc 	uvlong size;
662 ada3d479 2008-06-15 rsc 	char *ext = nil;
663 ada3d479 2008-06-15 rsc #endif
664 ada3d479 2008-06-15 rsc 
665 7763a61a 2003-11-23 devnull 	memset(&dir, 0, sizeof(dir));
666 7763a61a 2003-11-23 devnull 
667 fa3c8da1 2008-06-15 rsc 	dir.qid.path = vd->qid + vacfilegetqidoffset(parent);
668 fa3c8da1 2008-06-15 rsc 	if(vd->qidspace)
669 fa3c8da1 2008-06-15 rsc 		dir.qid.path += vd->qidoffset;
670 7763a61a 2003-11-23 devnull 	dir.qid.vers = vd->mcount;
671 7763a61a 2003-11-23 devnull 	dir.mode = vd->mode & 0777;
672 7763a61a 2003-11-23 devnull 	if(vd->mode & ModeAppend){
673 7763a61a 2003-11-23 devnull 		dir.qid.type |= QTAPPEND;
674 7763a61a 2003-11-23 devnull 		dir.mode |= DMAPPEND;
675 7763a61a 2003-11-23 devnull 	}
676 7763a61a 2003-11-23 devnull 	if(vd->mode & ModeExclusive){
677 7763a61a 2003-11-23 devnull 		dir.qid.type |= QTEXCL;
678 7763a61a 2003-11-23 devnull 		dir.mode |= DMEXCL;
679 7763a61a 2003-11-23 devnull 	}
680 7763a61a 2003-11-23 devnull 	if(vd->mode & ModeDir){
681 7763a61a 2003-11-23 devnull 		dir.qid.type |= QTDIR;
682 7763a61a 2003-11-23 devnull 		dir.mode |= DMDIR;
683 7763a61a 2003-11-23 devnull 	}
684 bbfdd7a6 2005-09-13 devnull 	
685 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
686 bbfdd7a6 2005-09-13 devnull 	if(vd->mode & (ModeLink|ModeDevice|ModeNamedPipe)){
687 bbfdd7a6 2005-09-13 devnull 		vf = vacfilewalk(parent, vd->elem);
688 bbfdd7a6 2005-09-13 devnull 		if(vf == nil)
689 bbfdd7a6 2005-09-13 devnull 			return 0;
690 bbfdd7a6 2005-09-13 devnull 		vacfilegetsize(vf, &size);
691 bbfdd7a6 2005-09-13 devnull 		ext = malloc(size+1);
692 bbfdd7a6 2005-09-13 devnull 		if(ext == nil)
693 bbfdd7a6 2005-09-13 devnull 			return 0;
694 bbfdd7a6 2005-09-13 devnull 		n = vacfileread(vf, ext, size, 0);
695 bbfdd7a6 2005-09-13 devnull 		ext[size] = 0;
696 bbfdd7a6 2005-09-13 devnull 		vacfiledecref(vf);
697 bbfdd7a6 2005-09-13 devnull 		if(vd->mode & ModeLink){
698 bbfdd7a6 2005-09-13 devnull 			dir.qid.type |= QTSYMLINK;
699 bbfdd7a6 2005-09-13 devnull 			dir.mode |= DMSYMLINK;
700 bbfdd7a6 2005-09-13 devnull 		}
701 bbfdd7a6 2005-09-13 devnull 		if(vd->mode & ModeDevice)
702 bbfdd7a6 2005-09-13 devnull 			dir.mode |= DMDEVICE;
703 bbfdd7a6 2005-09-13 devnull 		if(vd->mode & ModeNamedPipe)
704 bbfdd7a6 2005-09-13 devnull 			dir.mode |= DMNAMEDPIPE;
705 bbfdd7a6 2005-09-13 devnull 	}
706 ada3d479 2008-06-15 rsc #endif
707 bbfdd7a6 2005-09-13 devnull 	
708 7763a61a 2003-11-23 devnull 	dir.atime = vd->atime;
709 7763a61a 2003-11-23 devnull 	dir.mtime = vd->mtime;
710 7763a61a 2003-11-23 devnull 	dir.length = vd->size;
711 7763a61a 2003-11-23 devnull 
712 7763a61a 2003-11-23 devnull 	dir.name = vd->elem;
713 7763a61a 2003-11-23 devnull 	dir.uid = vd->uid;
714 7763a61a 2003-11-23 devnull 	dir.gid = vd->gid;
715 7763a61a 2003-11-23 devnull 	dir.muid = vd->mid;
716 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
717 bbfdd7a6 2005-09-13 devnull 	dir.ext = ext;
718 2cb7bf88 2007-01-18 devnull 	dir.uidnum = atoi(vd->uid);
719 2cb7bf88 2007-01-18 devnull 	dir.gidnum = atoi(vd->gid);
720 ada3d479 2008-06-15 rsc #endif
721 7763a61a 2003-11-23 devnull 
722 bbfdd7a6 2005-09-13 devnull 	ret = convD2Mu(&dir, p, np, dotu);
723 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
724 bbfdd7a6 2005-09-13 devnull 	free(ext);
725 ada3d479 2008-06-15 rsc #endif
726 bbfdd7a6 2005-09-13 devnull 	return ret;
727 7763a61a 2003-11-23 devnull }
728 7763a61a 2003-11-23 devnull 
729 7763a61a 2003-11-23 devnull int
730 7763a61a 2003-11-23 devnull vacdirread(Fid *f, char *p, long off, long cnt)
731 7763a61a 2003-11-23 devnull {
732 64f9764e 2008-06-14 rsc 	int i, n, nb;
733 64f9764e 2008-06-14 rsc 	VacDir vd;
734 7763a61a 2003-11-23 devnull 
735 7763a61a 2003-11-23 devnull 	/*
736 7763a61a 2003-11-23 devnull 	 * special case of rewinding a directory
737 7763a61a 2003-11-23 devnull 	 * otherwise ignore the offset
738 7763a61a 2003-11-23 devnull 	 */
739 64f9764e 2008-06-14 rsc 	if(off == 0 && f->vde){
740 64f9764e 2008-06-14 rsc 		vdeclose(f->vde);
741 64f9764e 2008-06-14 rsc 		f->vde = nil;
742 7763a61a 2003-11-23 devnull 	}
743 7763a61a 2003-11-23 devnull 
744 64f9764e 2008-06-14 rsc 	if(f->vde == nil){
745 64f9764e 2008-06-14 rsc 		f->vde = vdeopen(f->file);
746 64f9764e 2008-06-14 rsc 		if(f->vde == nil)
747 64f9764e 2008-06-14 rsc 			return -1;
748 64f9764e 2008-06-14 rsc 	}
749 7763a61a 2003-11-23 devnull 
750 7763a61a 2003-11-23 devnull 	for(nb = 0; nb < cnt; nb += n) {
751 64f9764e 2008-06-14 rsc 		i = vderead(f->vde, &vd);
752 64f9764e 2008-06-14 rsc 		if(i < 0)
753 64f9764e 2008-06-14 rsc 			return -1;
754 64f9764e 2008-06-14 rsc 		if(i == 0)
755 7763a61a 2003-11-23 devnull 			break;
756 64f9764e 2008-06-14 rsc 		n = vacstat(f->file, &vd, (uchar*)p, cnt-nb);
757 7763a61a 2003-11-23 devnull 		if(n <= BIT16SZ) {
758 64f9764e 2008-06-14 rsc 			vdeunread(f->vde);
759 7763a61a 2003-11-23 devnull 			break;
760 7763a61a 2003-11-23 devnull 		}
761 64f9764e 2008-06-14 rsc 		vdcleanup(&vd);
762 7763a61a 2003-11-23 devnull 		p += n;
763 7763a61a 2003-11-23 devnull 	}
764 7763a61a 2003-11-23 devnull 	return nb;
765 7763a61a 2003-11-23 devnull }
766 7763a61a 2003-11-23 devnull 
767 7763a61a 2003-11-23 devnull Fid *
768 7763a61a 2003-11-23 devnull newfid(int fid)
769 7763a61a 2003-11-23 devnull {
770 7763a61a 2003-11-23 devnull 	Fid *f, *ff;
771 7763a61a 2003-11-23 devnull 
772 7763a61a 2003-11-23 devnull 	ff = 0;
773 7763a61a 2003-11-23 devnull 	for(f = fids; f; f = f->next)
774 7763a61a 2003-11-23 devnull 		if(f->fid == fid)
775 7763a61a 2003-11-23 devnull 			return f;
776 7763a61a 2003-11-23 devnull 		else if(!ff && !f->busy)
777 7763a61a 2003-11-23 devnull 			ff = f;
778 7763a61a 2003-11-23 devnull 	if(ff){
779 7763a61a 2003-11-23 devnull 		ff->fid = fid;
780 7763a61a 2003-11-23 devnull 		return ff;
781 7763a61a 2003-11-23 devnull 	}
782 a20a1468 2005-01-16 devnull 	f = vtmallocz(sizeof *f);
783 7763a61a 2003-11-23 devnull 	f->fid = fid;
784 7763a61a 2003-11-23 devnull 	f->next = fids;
785 7763a61a 2003-11-23 devnull 	fids = f;
786 7763a61a 2003-11-23 devnull 	return f;
787 7763a61a 2003-11-23 devnull }
788 7763a61a 2003-11-23 devnull 
789 7763a61a 2003-11-23 devnull void
790 7763a61a 2003-11-23 devnull io(void)
791 7763a61a 2003-11-23 devnull {
792 7763a61a 2003-11-23 devnull 	char *err;
793 7763a61a 2003-11-23 devnull 	int n;
794 7763a61a 2003-11-23 devnull 
795 7763a61a 2003-11-23 devnull 	for(;;){
796 be3e3514 2008-04-17 rsc 		n = read9pmsg(mfd[0], mdata, sizeof mdata);
797 be3e3514 2008-04-17 rsc 		if(n <= 0)
798 7763a61a 2003-11-23 devnull 			break;
799 bbfdd7a6 2005-09-13 devnull 		if(convM2Su(mdata, n, &rhdr, dotu) != n)
800 7763a61a 2003-11-23 devnull 			sysfatal("convM2S conversion error");
801 7763a61a 2003-11-23 devnull 
802 7763a61a 2003-11-23 devnull 		if(dflag)
803 7763a61a 2003-11-23 devnull 			fprint(2, "vacfs:<-%F\n", &rhdr);
804 7763a61a 2003-11-23 devnull 
805 7763a61a 2003-11-23 devnull 		thdr.data = (char*)mdata + IOHDRSZ;
806 7763a61a 2003-11-23 devnull 		if(!fcalls[rhdr.type])
807 7763a61a 2003-11-23 devnull 			err = "bad fcall type";
808 7763a61a 2003-11-23 devnull 		else
809 7763a61a 2003-11-23 devnull 			err = (*fcalls[rhdr.type])(newfid(rhdr.fid));
810 7763a61a 2003-11-23 devnull 		if(err){
811 7763a61a 2003-11-23 devnull 			thdr.type = Rerror;
812 7763a61a 2003-11-23 devnull 			thdr.ename = err;
813 ada3d479 2008-06-15 rsc #ifdef PLAN9PORT
814 bbfdd7a6 2005-09-13 devnull 			thdr.errornum = 0;
815 ada3d479 2008-06-15 rsc #endif
816 7763a61a 2003-11-23 devnull 		}else{
817 7763a61a 2003-11-23 devnull 			thdr.type = rhdr.type + 1;
818 7763a61a 2003-11-23 devnull 			thdr.fid = rhdr.fid;
819 7763a61a 2003-11-23 devnull 		}
820 7763a61a 2003-11-23 devnull 		thdr.tag = rhdr.tag;
821 7763a61a 2003-11-23 devnull 		if(dflag)
822 7763a61a 2003-11-23 devnull 			fprint(2, "vacfs:->%F\n", &thdr);
823 bbfdd7a6 2005-09-13 devnull 		n = convS2Mu(&thdr, mdata, messagesize, dotu);
824 9e2f1d9b 2005-11-21 devnull 		if(n <= BIT16SZ)
825 9e2f1d9b 2005-11-21 devnull 			sysfatal("convS2Mu conversion error");
826 9e2f1d9b 2005-11-21 devnull 		if(err)
827 a20a1468 2005-01-16 devnull 			vtfree(err);
828 a20a1468 2005-01-16 devnull 
829 7763a61a 2003-11-23 devnull 		if(write(mfd[1], mdata, n) != n)
830 7763a61a 2003-11-23 devnull 			sysfatal("mount write: %r");
831 7763a61a 2003-11-23 devnull 	}
832 7763a61a 2003-11-23 devnull }
833 7763a61a 2003-11-23 devnull 
834 7763a61a 2003-11-23 devnull int
835 7763a61a 2003-11-23 devnull permf(VacFile *vf, char *user, int p)
836 7763a61a 2003-11-23 devnull {
837 7763a61a 2003-11-23 devnull 	VacDir dir;
838 7763a61a 2003-11-23 devnull 	ulong perm;
839 7763a61a 2003-11-23 devnull 
840 a20a1468 2005-01-16 devnull 	if(vacfilegetdir(vf, &dir))
841 7763a61a 2003-11-23 devnull 		return 0;
842 7763a61a 2003-11-23 devnull 	perm = dir.mode & 0777;
843 a20a1468 2005-01-16 devnull 
844 7763a61a 2003-11-23 devnull 	if(noperm)
845 7763a61a 2003-11-23 devnull 		goto Good;
846 7763a61a 2003-11-23 devnull 	if((p*Pother) & perm)
847 7763a61a 2003-11-23 devnull 		goto Good;
848 7763a61a 2003-11-23 devnull 	if(strcmp(user, dir.gid)==0 && ((p*Pgroup) & perm))
849 7763a61a 2003-11-23 devnull 		goto Good;
850 7763a61a 2003-11-23 devnull 	if(strcmp(user, dir.uid)==0 && ((p*Powner) & perm))
851 7763a61a 2003-11-23 devnull 		goto Good;
852 a20a1468 2005-01-16 devnull 	vdcleanup(&dir);
853 7763a61a 2003-11-23 devnull 	return 0;
854 7763a61a 2003-11-23 devnull Good:
855 a20a1468 2005-01-16 devnull 	vdcleanup(&dir);
856 7763a61a 2003-11-23 devnull 	return 1;
857 7763a61a 2003-11-23 devnull }
858 7763a61a 2003-11-23 devnull 
859 7763a61a 2003-11-23 devnull int
860 7763a61a 2003-11-23 devnull perm(Fid *f, int p)
861 7763a61a 2003-11-23 devnull {
862 7763a61a 2003-11-23 devnull 	return permf(f->file, f->user, p);
863 7763a61a 2003-11-23 devnull }
864 7763a61a 2003-11-23 devnull 
865 7763a61a 2003-11-23 devnull void
866 a331ac4c 2005-01-19 devnull vacshutdown(void)
867 7763a61a 2003-11-23 devnull {
868 7763a61a 2003-11-23 devnull 	Fid *f;
869 7763a61a 2003-11-23 devnull 
870 7763a61a 2003-11-23 devnull 	for(f = fids; f; f = f->next) {
871 7763a61a 2003-11-23 devnull 		if(!f->busy)
872 7763a61a 2003-11-23 devnull 			continue;
873 7763a61a 2003-11-23 devnull 		rclunk(f);
874 7763a61a 2003-11-23 devnull 	}
875 7763a61a 2003-11-23 devnull 
876 a20a1468 2005-01-16 devnull 	vacfsclose(fs);
877 a20a1468 2005-01-16 devnull 	vthangup(conn);
878 7763a61a 2003-11-23 devnull }
879 7763a61a 2003-11-23 devnull