tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
32static int
33p9_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
57static int
58p9_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
87static int
88p9_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
119static int
120p9_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
139static int
140p9_printdata(char *buf, int buflen, u8 *data, int datalen)
141{
142 return p9_dumpdata(buf, buflen, data, datalen < 16?datalen:16);
143}
144
145int
146p9_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
352int
353p9_printfcall(char *buf, int buflen, struct p9_fcall *fc, int extended)
354{
355 return 0;
356}
357EXPORT_SYMBOL(p9_printfcall);
358#endif /* CONFIG_NET_9P_DEBUG */