[TCP]: cleanup of htcp (resend)
[linux-2.6] / fs / 9p / fcprint.c
1 /*
2  *  linux/fs/9p/fcprint.c
3  *
4  *  Print 9P call.
5  *
6  *  Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License version 2
10  *  as published by the Free Software Foundation.
11  *
12  *  This program is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to:
19  *  Free Software Foundation
20  *  51 Franklin Street, Fifth Floor
21  *  Boston, MA  02111-1301  USA
22  *
23  */
24 #include <linux/module.h>
25 #include <linux/errno.h>
26 #include <linux/fs.h>
27 #include <linux/idr.h>
28
29 #include "debug.h"
30 #include "v9fs.h"
31 #include "9p.h"
32 #include "mux.h"
33
34 static int
35 v9fs_printqid(char *buf, int buflen, struct v9fs_qid *q)
36 {
37         int n;
38         char b[10];
39
40         n = 0;
41         if (q->type & V9FS_QTDIR)
42                 b[n++] = 'd';
43         if (q->type & V9FS_QTAPPEND)
44                 b[n++] = 'a';
45         if (q->type & V9FS_QTAUTH)
46                 b[n++] = 'A';
47         if (q->type & V9FS_QTEXCL)
48                 b[n++] = 'l';
49         if (q->type & V9FS_QTTMP)
50                 b[n++] = 't';
51         if (q->type & V9FS_QTSYMLINK)
52                 b[n++] = 'L';
53         b[n] = '\0';
54
55         return scnprintf(buf, buflen, "(%.16llx %x %s)", (long long int) q->path,
56                 q->version, b);
57 }
58
59 static int
60 v9fs_printperm(char *buf, int buflen, int perm)
61 {
62         int n;
63         char b[15];
64
65         n = 0;
66         if (perm & V9FS_DMDIR)
67                 b[n++] = 'd';
68         if (perm & V9FS_DMAPPEND)
69                 b[n++] = 'a';
70         if (perm & V9FS_DMAUTH)
71                 b[n++] = 'A';
72         if (perm & V9FS_DMEXCL)
73                 b[n++] = 'l';
74         if (perm & V9FS_DMTMP)
75                 b[n++] = 't';
76         if (perm & V9FS_DMDEVICE)
77                 b[n++] = 'D';
78         if (perm & V9FS_DMSOCKET)
79                 b[n++] = 'S';
80         if (perm & V9FS_DMNAMEDPIPE)
81                 b[n++] = 'P';
82         if (perm & V9FS_DMSYMLINK)
83                 b[n++] = 'L';
84         b[n] = '\0';
85
86         return scnprintf(buf, buflen, "%s%03o", b, perm&077);
87 }
88
89 static int
90 v9fs_printstat(char *buf, int buflen, struct v9fs_stat *st, int extended)
91 {
92         int n;
93
94         n = scnprintf(buf, buflen, "'%.*s' '%.*s'", st->name.len,
95                 st->name.str, st->uid.len, st->uid.str);
96         if (extended)
97                 n += scnprintf(buf+n, buflen-n, "(%d)", st->n_uid);
98
99         n += scnprintf(buf+n, buflen-n, " '%.*s'", st->gid.len, st->gid.str);
100         if (extended)
101                 n += scnprintf(buf+n, buflen-n, "(%d)", st->n_gid);
102
103         n += scnprintf(buf+n, buflen-n, " '%.*s'", st->muid.len, st->muid.str);
104         if (extended)
105                 n += scnprintf(buf+n, buflen-n, "(%d)", st->n_muid);
106
107         n += scnprintf(buf+n, buflen-n, " q ");
108         n += v9fs_printqid(buf+n, buflen-n, &st->qid);
109         n += scnprintf(buf+n, buflen-n, " m ");
110         n += v9fs_printperm(buf+n, buflen-n, st->mode);
111         n += scnprintf(buf+n, buflen-n, " at %d mt %d l %lld",
112                 st->atime, st->mtime, (long long int) st->length);
113
114         if (extended)
115                 n += scnprintf(buf+n, buflen-n, " ext '%.*s'",
116                         st->extension.len, st->extension.str);
117
118         return n;
119 }
120
121 static int
122 v9fs_dumpdata(char *buf, int buflen, u8 *data, int datalen)
123 {
124         int i, n;
125
126         i = n = 0;
127         while (i < datalen) {
128                 n += scnprintf(buf + n, buflen - n, "%02x", data[i]);
129                 if (i%4 == 3)
130                         n += scnprintf(buf + n, buflen - n, " ");
131                 if (i%32 == 31)
132                         n += scnprintf(buf + n, buflen - n, "\n");
133
134                 i++;
135         }
136         n += scnprintf(buf + n, buflen - n, "\n");
137
138         return n;
139 }
140
141 static int
142 v9fs_printdata(char *buf, int buflen, u8 *data, int datalen)
143 {
144         return v9fs_dumpdata(buf, buflen, data, datalen<16?datalen:16);
145 }
146
147 int
148 v9fs_printfcall(char *buf, int buflen, struct v9fs_fcall *fc, int extended)
149 {
150         int i, ret, type, tag;
151
152         if (!fc)
153                 return scnprintf(buf, buflen, "<NULL>");
154
155         type = fc->id;
156         tag = fc->tag;
157
158         ret = 0;
159         switch (type) {
160         case TVERSION:
161                 ret += scnprintf(buf+ret, buflen-ret,
162                         "Tversion tag %u msize %u version '%.*s'", tag,
163                         fc->params.tversion.msize, fc->params.tversion.version.len,
164                         fc->params.tversion.version.str);
165                 break;
166
167         case RVERSION:
168                 ret += scnprintf(buf+ret, buflen-ret,
169                         "Rversion tag %u msize %u version '%.*s'", tag,
170                         fc->params.rversion.msize, fc->params.rversion.version.len,
171                         fc->params.rversion.version.str);
172                 break;
173
174         case TAUTH:
175                 ret += scnprintf(buf+ret, buflen-ret,
176                         "Tauth tag %u afid %d uname '%.*s' aname '%.*s'", tag,
177                         fc->params.tauth.afid, fc->params.tauth.uname.len,
178                         fc->params.tauth.uname.str, fc->params.tauth.aname.len,
179                         fc->params.tauth.aname.str);
180                 break;
181
182         case RAUTH:
183                 ret += scnprintf(buf+ret, buflen-ret, "Rauth tag %u qid ", tag);
184                 v9fs_printqid(buf+ret, buflen-ret, &fc->params.rauth.qid);
185                 break;
186
187         case TATTACH:
188                 ret += scnprintf(buf+ret, buflen-ret,
189                         "Tattach tag %u fid %d afid %d uname '%.*s' aname '%.*s'",
190                         tag, fc->params.tattach.fid, fc->params.tattach.afid,
191                         fc->params.tattach.uname.len, fc->params.tattach.uname.str,
192                         fc->params.tattach.aname.len, fc->params.tattach.aname.str);
193                 break;
194
195         case RATTACH:
196                 ret += scnprintf(buf+ret, buflen-ret, "Rattach tag %u qid ", tag);
197                 v9fs_printqid(buf+ret, buflen-ret, &fc->params.rattach.qid);
198                 break;
199
200         case RERROR:
201                 ret += scnprintf(buf+ret, buflen-ret, "Rerror tag %u ename '%.*s'",
202                         tag, fc->params.rerror.error.len,
203                         fc->params.rerror.error.str);
204                 if (extended)
205                         ret += scnprintf(buf+ret, buflen-ret, " ecode %d\n",
206                                 fc->params.rerror.errno);
207                 break;
208
209         case TFLUSH:
210                 ret += scnprintf(buf+ret, buflen-ret, "Tflush tag %u oldtag %u",
211                         tag, fc->params.tflush.oldtag);
212                 break;
213
214         case RFLUSH:
215                 ret += scnprintf(buf+ret, buflen-ret, "Rflush tag %u", tag);
216                 break;
217
218         case TWALK:
219                 ret += scnprintf(buf+ret, buflen-ret,
220                         "Twalk tag %u fid %d newfid %d nwname %d", tag,
221                         fc->params.twalk.fid, fc->params.twalk.newfid,
222                         fc->params.twalk.nwname);
223                 for(i = 0; i < fc->params.twalk.nwname; i++)
224                         ret += scnprintf(buf+ret, buflen-ret," '%.*s'",
225                                 fc->params.twalk.wnames[i].len,
226                                 fc->params.twalk.wnames[i].str);
227                 break;
228
229         case RWALK:
230                 ret += scnprintf(buf+ret, buflen-ret, "Rwalk tag %u nwqid %d",
231                         tag, fc->params.rwalk.nwqid);
232                 for(i = 0; i < fc->params.rwalk.nwqid; i++)
233                         ret += v9fs_printqid(buf+ret, buflen-ret,
234                                 &fc->params.rwalk.wqids[i]);
235                 break;
236
237         case TOPEN:
238                 ret += scnprintf(buf+ret, buflen-ret,
239                         "Topen tag %u fid %d mode %d", tag,
240                         fc->params.topen.fid, fc->params.topen.mode);
241                 break;
242
243         case ROPEN:
244                 ret += scnprintf(buf+ret, buflen-ret, "Ropen tag %u", tag);
245                 ret += v9fs_printqid(buf+ret, buflen-ret, &fc->params.ropen.qid);
246                 ret += scnprintf(buf+ret, buflen-ret," iounit %d",
247                         fc->params.ropen.iounit);
248                 break;
249
250         case TCREATE:
251                 ret += scnprintf(buf+ret, buflen-ret,
252                         "Tcreate tag %u fid %d name '%.*s' perm ", tag,
253                         fc->params.tcreate.fid, fc->params.tcreate.name.len,
254                         fc->params.tcreate.name.str);
255
256                 ret += v9fs_printperm(buf+ret, buflen-ret, fc->params.tcreate.perm);
257                 ret += scnprintf(buf+ret, buflen-ret, " mode %d",
258                         fc->params.tcreate.mode);
259                 break;
260
261         case RCREATE:
262                 ret += scnprintf(buf+ret, buflen-ret, "Rcreate tag %u", tag);
263                 ret += v9fs_printqid(buf+ret, buflen-ret, &fc->params.rcreate.qid);
264                 ret += scnprintf(buf+ret, buflen-ret, " iounit %d",
265                         fc->params.rcreate.iounit);
266                 break;
267
268         case TREAD:
269                 ret += scnprintf(buf+ret, buflen-ret,
270                         "Tread tag %u fid %d offset %lld count %u", tag,
271                         fc->params.tread.fid,
272                         (long long int) fc->params.tread.offset,
273                         fc->params.tread.count);
274                 break;
275
276         case RREAD:
277                 ret += scnprintf(buf+ret, buflen-ret,
278                         "Rread tag %u count %u data ", tag,
279                         fc->params.rread.count);
280                 ret += v9fs_printdata(buf+ret, buflen-ret, fc->params.rread.data,
281                         fc->params.rread.count);
282                 break;
283
284         case TWRITE:
285                 ret += scnprintf(buf+ret, buflen-ret,
286                         "Twrite tag %u fid %d offset %lld count %u data ",
287                         tag, fc->params.twrite.fid,
288                         (long long int) fc->params.twrite.offset,
289                         fc->params.twrite.count);
290                 ret += v9fs_printdata(buf+ret, buflen-ret, fc->params.twrite.data,
291                         fc->params.twrite.count);
292                 break;
293
294         case RWRITE:
295                 ret += scnprintf(buf+ret, buflen-ret, "Rwrite tag %u count %u",
296                         tag, fc->params.rwrite.count);
297                 break;
298
299         case TCLUNK:
300                 ret += scnprintf(buf+ret, buflen-ret, "Tclunk tag %u fid %d",
301                         tag, fc->params.tclunk.fid);
302                 break;
303
304         case RCLUNK:
305                 ret += scnprintf(buf+ret, buflen-ret, "Rclunk tag %u", tag);
306                 break;
307
308         case TREMOVE:
309                 ret += scnprintf(buf+ret, buflen-ret, "Tremove tag %u fid %d",
310                         tag, fc->params.tremove.fid);
311                 break;
312
313         case RREMOVE:
314                 ret += scnprintf(buf+ret, buflen-ret, "Rremove tag %u", tag);
315                 break;
316
317         case TSTAT:
318                 ret += scnprintf(buf+ret, buflen-ret, "Tstat tag %u fid %d",
319                         tag, fc->params.tstat.fid);
320                 break;
321
322         case RSTAT:
323                 ret += scnprintf(buf+ret, buflen-ret, "Rstat tag %u ", tag);
324                 ret += v9fs_printstat(buf+ret, buflen-ret, &fc->params.rstat.stat,
325                         extended);
326                 break;
327
328         case TWSTAT:
329                 ret += scnprintf(buf+ret, buflen-ret, "Twstat tag %u fid %d ",
330                         tag, fc->params.twstat.fid);
331                 ret += v9fs_printstat(buf+ret, buflen-ret, &fc->params.twstat.stat,
332                         extended);
333                 break;
334
335         case RWSTAT:
336                 ret += scnprintf(buf+ret, buflen-ret, "Rwstat tag %u", tag);
337                 break;
338
339         default:
340                 ret += scnprintf(buf+ret, buflen-ret, "unknown type %d", type);
341                 break;
342         }
343
344         return ret;
345 }