b1ae8ec57d54e8e5dbcc277ebb4b0266bffa2c6e
[linux-2.6.git] / net / 9p / fcprint.c
1 /*
2  *  net/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 #include <net/9p/9p.h>
29
30 #ifdef CONFIG_NET_9P_DEBUG
31
32 static int
33 p9_printqid(char *buf, int buflen, struct p9_qid *q)
34 {
35         int n;
36         char b[10];
37
38         n = 0;
39         if (q->type & P9_QTDIR)
40                 b[n++] = 'd';
41         if (q->type & P9_QTAPPEND)
42                 b[n++] = 'a';
43         if (q->type & P9_QTAUTH)
44                 b[n++] = 'A';
45         if (q->type & P9_QTEXCL)
46                 b[n++] = 'l';
47         if (q->type & P9_QTTMP)
48                 b[n++] = 't';
49         if (q->type & P9_QTSYMLINK)
50                 b[n++] = 'L';
51         b[n] = '\0';
52
53         return scnprintf(buf, buflen, "(%.16llx %x %s)",
54                                         (long long int) q->path, q->version, b);
55 }
56
57 static int
58 p9_printperm(char *buf, int buflen, int perm)
59 {
60         int n;
61         char b[15];
62
63         n = 0;
64         if (perm & P9_DMDIR)
65                 b[n++] = 'd';
66         if (perm & P9_DMAPPEND)
67                 b[n++] = 'a';
68         if (perm & P9_DMAUTH)
69                 b[n++] = 'A';
70         if (perm & P9_DMEXCL)
71                 b[n++] = 'l';
72         if (perm & P9_DMTMP)
73                 b[n++] = 't';
74         if (perm & P9_DMDEVICE)
75                 b[n++] = 'D';
76         if (perm & P9_DMSOCKET)
77                 b[n++] = 'S';
78         if (perm & P9_DMNAMEDPIPE)
79                 b[n++] = 'P';
80         if (perm & P9_DMSYMLINK)
81                 b[n++] = 'L';
82         b[n] = '\0';
83
84         return scnprintf(buf, buflen, "%s%03o", b, perm&077);
85 }
86
87 static int
88 p9_printstat(char *buf, int buflen, struct p9_stat *st, int extended)
89 {
90         int n;
91
92         n = scnprintf(buf, buflen, "'%.*s' '%.*s'", st->name.len,
93                 st->name.str, st->uid.len, st->uid.str);
94         if (extended)
95                 n += scnprintf(buf+n, buflen-n, "(%d)", st->n_uid);
96
97         n += scnprintf(buf+n, buflen-n, " '%.*s'", st->gid.len, st->gid.str);
98         if (extended)
99                 n += scnprintf(buf+n, buflen-n, "(%d)", st->n_gid);
100
101         n += scnprintf(buf+n, buflen-n, " '%.*s'", st->muid.len, st->muid.str);
102         if (extended)
103                 n += scnprintf(buf+n, buflen-n, "(%d)", st->n_muid);
104
105         n += scnprintf(buf+n, buflen-n, " q ");
106         n += p9_printqid(buf+n, buflen-n, &st->qid);
107         n += scnprintf(buf+n, buflen-n, " m ");
108         n += p9_printperm(buf+n, buflen-n, st->mode);
109         n += scnprintf(buf+n, buflen-n, " at %d mt %d l %lld",
110                 st->atime, st->mtime, (long long int) st->length);
111
112         if (extended)
113                 n += scnprintf(buf+n, buflen-n, " ext '%.*s'",
114                         st->extension.len, st->extension.str);
115
116         return n;
117 }
118
119 static int
120 p9_dumpdata(char *buf, int buflen, u8 *data, int datalen)
121 {
122         int i, n;
123
124         i = n = 0;
125         while (i < datalen) {
126                 n += scnprintf(buf + n, buflen - n, "%02x", data[i]);
127                 if (i%4 == 3)
128                         n += scnprintf(buf + n, buflen - n, " ");
129                 if (i%32 == 31)
130                         n += scnprintf(buf + n, buflen - n, "\n");
131
132                 i++;
133         }
134         n += scnprintf(buf + n, buflen - n, "\n");
135
136         return n;
137 }
138
139 static int
140 p9_printdata(char *buf, int buflen, u8 *data, int datalen)
141 {
142         return p9_dumpdata(buf, buflen, data, datalen < 16?datalen:16);
143 }
144
145 int
146 p9_printfcall(char *buf, int buflen, struct p9_fcall *fc, int extended)
147 {
148         int i, ret, type, tag;
149
150         if (!fc)
151                 return scnprintf(buf, buflen, "<NULL>");
152
153         type = fc->id;
154         tag = fc->tag;
155
156         ret = 0;
157         switch (type) {
158         case P9_TVERSION:
159                 ret += scnprintf(buf+ret, buflen-ret,
160                                 "Tversion tag %u msize %u version '%.*s'", tag,
161                                 fc->params.tversion.msize,
162                                 fc->params.tversion.version.len,
163                                 fc->params.tversion.version.str);
164                 break;
165
166         case P9_RVERSION:
167                 ret += scnprintf(buf+ret, buflen-ret,
168                                 "Rversion tag %u msize %u version '%.*s'", tag,
169                                 fc->params.rversion.msize,
170                                 fc->params.rversion.version.len,
171                                 fc->params.rversion.version.str);
172                 break;
173
174         case P9_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 P9_RAUTH:
183                 ret += scnprintf(buf+ret, buflen-ret, "Rauth tag %u qid ", tag);
184                 p9_printqid(buf+ret, buflen-ret, &fc->params.rauth.qid);
185                 break;
186
187         case P9_TATTACH:
188                 ret += scnprintf(buf+ret, buflen-ret,
189                  "Tattach tag %u fid %d afid %d uname '%.*s' aname '%.*s'", tag,
190                  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 P9_RATTACH:
196                 ret += scnprintf(buf+ret, buflen-ret, "Rattach tag %u qid ",
197                                                                         tag);
198                 p9_printqid(buf+ret, buflen-ret, &fc->params.rattach.qid);
199                 break;
200
201         case P9_RERROR:
202                 ret += scnprintf(buf+ret, buflen-ret,
203                                 "Rerror tag %u ename '%.*s'", tag,
204                                 fc->params.rerror.error.len,
205                                 fc->params.rerror.error.str);
206                 if (extended)
207                         ret += scnprintf(buf+ret, buflen-ret, " ecode %d\n",
208                                 fc->params.rerror.errno);
209                 break;
210
211         case P9_TFLUSH:
212                 ret += scnprintf(buf+ret, buflen-ret, "Tflush tag %u oldtag %u",
213                         tag, fc->params.tflush.oldtag);
214                 break;
215
216         case P9_RFLUSH:
217                 ret += scnprintf(buf+ret, buflen-ret, "Rflush tag %u", tag);
218                 break;
219
220         case P9_TWALK:
221                 ret += scnprintf(buf+ret, buflen-ret,
222                         "Twalk tag %u fid %d newfid %d nwname %d", tag,
223                         fc->params.twalk.fid, fc->params.twalk.newfid,
224                         fc->params.twalk.nwname);
225                 for (i = 0; i < fc->params.twalk.nwname; i++)
226                         ret += scnprintf(buf+ret, buflen-ret, " '%.*s'",
227                                 fc->params.twalk.wnames[i].len,
228                                 fc->params.twalk.wnames[i].str);
229                 break;
230
231         case P9_RWALK:
232                 ret += scnprintf(buf+ret, buflen-ret, "Rwalk tag %u nwqid %d",
233                         tag, fc->params.rwalk.nwqid);
234                 for (i = 0; i < fc->params.rwalk.nwqid; i++)
235                         ret += p9_printqid(buf+ret, buflen-ret,
236                                 &fc->params.rwalk.wqids[i]);
237                 break;
238
239         case P9_TOPEN:
240                 ret += scnprintf(buf+ret, buflen-ret,
241                         "Topen tag %u fid %d mode %d", tag,
242                         fc->params.topen.fid, fc->params.topen.mode);
243                 break;
244
245         case P9_ROPEN:
246                 ret += scnprintf(buf+ret, buflen-ret, "Ropen tag %u", tag);
247                 ret += p9_printqid(buf+ret, buflen-ret, &fc->params.ropen.qid);
248                 ret += scnprintf(buf+ret, buflen-ret, " iounit %d",
249                         fc->params.ropen.iounit);
250                 break;
251
252         case P9_TCREATE:
253                 ret += scnprintf(buf+ret, buflen-ret,
254                         "Tcreate tag %u fid %d name '%.*s' perm ", tag,
255                         fc->params.tcreate.fid, fc->params.tcreate.name.len,
256                         fc->params.tcreate.name.str);
257
258                 ret += p9_printperm(buf+ret, buflen-ret,
259                                                 fc->params.tcreate.perm);
260                 ret += scnprintf(buf+ret, buflen-ret, " mode %d",
261                         fc->params.tcreate.mode);
262                 break;
263
264         case P9_RCREATE:
265                 ret += scnprintf(buf+ret, buflen-ret, "Rcreate tag %u", tag);
266                 ret += p9_printqid(buf+ret, buflen-ret,
267                                                 &fc->params.rcreate.qid);
268                 ret += scnprintf(buf+ret, buflen-ret, " iounit %d",
269                         fc->params.rcreate.iounit);
270                 break;
271
272         case P9_TREAD:
273                 ret += scnprintf(buf+ret, buflen-ret,
274                         "Tread tag %u fid %d offset %lld count %u", tag,
275                         fc->params.tread.fid,
276                         (long long int) fc->params.tread.offset,
277                         fc->params.tread.count);
278                 break;
279
280         case P9_RREAD:
281                 ret += scnprintf(buf+ret, buflen-ret,
282                         "Rread tag %u count %u data ", tag,
283                         fc->params.rread.count);
284                 ret += p9_printdata(buf+ret, buflen-ret, fc->params.rread.data,
285                         fc->params.rread.count);
286                 break;
287
288         case P9_TWRITE:
289                 ret += scnprintf(buf+ret, buflen-ret,
290                         "Twrite tag %u fid %d offset %lld count %u data ",
291                         tag, fc->params.twrite.fid,
292                         (long long int) fc->params.twrite.offset,
293                         fc->params.twrite.count);
294                 ret += p9_printdata(buf+ret, buflen-ret, fc->params.twrite.data,
295                         fc->params.twrite.count);
296                 break;
297
298         case P9_RWRITE:
299                 ret += scnprintf(buf+ret, buflen-ret, "Rwrite tag %u count %u",
300                         tag, fc->params.rwrite.count);
301                 break;
302
303         case P9_TCLUNK:
304                 ret += scnprintf(buf+ret, buflen-ret, "Tclunk tag %u fid %d",
305                         tag, fc->params.tclunk.fid);
306                 break;
307
308         case P9_RCLUNK:
309                 ret += scnprintf(buf+ret, buflen-ret, "Rclunk tag %u", tag);
310                 break;
311
312         case P9_TREMOVE:
313                 ret += scnprintf(buf+ret, buflen-ret, "Tremove tag %u fid %d",
314                         tag, fc->params.tremove.fid);
315                 break;
316
317         case P9_RREMOVE:
318                 ret += scnprintf(buf+ret, buflen-ret, "Rremove tag %u", tag);
319                 break;
320
321         case P9_TSTAT:
322                 ret += scnprintf(buf+ret, buflen-ret, "Tstat tag %u fid %d",
323                         tag, fc->params.tstat.fid);
324                 break;
325
326         case P9_RSTAT:
327                 ret += scnprintf(buf+ret, buflen-ret, "Rstat tag %u ", tag);
328                 ret += p9_printstat(buf+ret, buflen-ret, &fc->params.rstat.stat,
329                         extended);
330                 break;
331
332         case P9_TWSTAT:
333                 ret += scnprintf(buf+ret, buflen-ret, "Twstat tag %u fid %d ",
334                         tag, fc->params.twstat.fid);
335                 ret += p9_printstat(buf+ret, buflen-ret,
336                                         &fc->params.twstat.stat, extended);
337                 break;
338
339         case P9_RWSTAT:
340                 ret += scnprintf(buf+ret, buflen-ret, "Rwstat tag %u", tag);
341                 break;
342
343         default:
344                 ret += scnprintf(buf+ret, buflen-ret, "unknown type %d", type);
345                 break;
346         }
347
348         return ret;
349 }
350
351 #else
352 int
353 p9_printfcall(char *buf, int buflen, struct p9_fcall *fc, int extended)
354 {
355         return 0;
356 }
357 EXPORT_SYMBOL(p9_printfcall);
358 #endif /* CONFIG_NET_9P_DEBUG */