desc.c revision 7b3346be42d6a1f539e95d385ee498f8b3c529f8 
1/*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 *	$Id$
31 */
32
33#include "defs.h"
34
35#include <fcntl.h>
36#include <sys/file.h>
37
38#if HAVE_LONG_LONG_OFF_T
39/*
40 * Hacks for systems that have a long long off_t
41 */
42#define flock64	flock		/* Horrid hack */
43#define printflock printflock64	/* Horrider hack */
44#endif
45
46
47static struct xlat fcntlcmds[] = {
48	{ F_DUPFD,	"F_DUPFD"	},
49	{ F_GETFD,	"F_GETFD"	},
50	{ F_SETFD,	"F_SETFD"	},
51	{ F_GETFL,	"F_GETFL"	},
52	{ F_SETFL,	"F_SETFL"	},
53	{ F_GETLK,	"F_GETLK"	},
54	{ F_SETLK,	"F_SETLK"	},
55	{ F_SETLKW,	"F_SETLKW"	},
56	{ F_GETOWN,	"F_GETOWN"	},
57	{ F_SETOWN,	"F_SETOWN"	},
58#ifdef F_RSETLK
59	{ F_RSETLK,	"F_RSETLK"	},
60#endif
61#ifdef F_RSETLKW
62	{ F_RSETLKW,	"F_RSETLKW"	},
63#endif
64#ifdef F_RGETLK
65	{ F_RGETLK,	"F_RGETLK"	},
66#endif
67#ifdef F_CNVT
68	{ F_CNVT,	"F_CNVT"	},
69#endif
70#ifdef F_SETSIG
71	{ F_SETSIG,	"F_SETSIG"	},
72#endif
73#ifdef F_GETSIG
74	{ F_GETSIG,	"F_GETSIG"	},
75#endif
76#ifdef F_CHKFL
77	{ F_CHKFL,	"F_CHKFL"	},
78#endif
79#ifdef F_DUP2FD
80	{ F_DUP2FD,	"F_DUP2FD"	},
81#endif
82#ifdef F_ALLOCSP
83	{ F_ALLOCSP,	"F_ALLOCSP"	},
84#endif
85#ifdef F_ISSTREAM
86	{ F_ISSTREAM,	"F_ISSTREAM"	},
87#endif
88#ifdef F_PRIV
89	{ F_PRIV,	"F_PRIV"	},
90#endif
91#ifdef F_NPRIV
92	{ F_NPRIV,	"F_NPRIV"	},
93#endif
94#ifdef F_QUOTACL
95	{ F_QUOTACL,	"F_QUOTACL"	},
96#endif
97#ifdef F_BLOCKS
98	{ F_BLOCKS,	"F_BLOCKS"	},
99#endif
100#ifdef F_BLKSIZE
101	{ F_BLKSIZE,	"F_BLKSIZE"	},
102#endif
103#ifdef F_GETOWN
104	{ F_GETOWN,	"F_GETOWN"	},
105#endif
106#ifdef F_SETOWN
107	{ F_SETOWN,	"F_SETOWN"	},
108#endif
109#ifdef F_REVOKE
110	{ F_REVOKE,	"F_REVOKE"	},
111#endif
112#ifdef F_SETLK
113	{ F_SETLK,	"F_SETLK"	},
114#endif
115#ifdef F_SETLKW
116	{ F_SETLKW,	"F_SETLKW"	},
117#endif
118#ifdef F_FREESP
119	{ F_FREESP,	"F_FREESP"	},
120#endif
121#ifdef F_GETLK
122	{ F_GETLK,	"F_GETLK"	},
123#endif
124#ifdef F_SETLK64
125	{ F_SETLK64,	"F_SETLK64"	},
126#endif
127#ifdef F_SETLKW64
128	{ F_SETLKW64,	"F_SETLKW64"	},
129#endif
130#ifdef F_FREESP64
131	{ F_FREESP64,	"F_FREESP64"	},
132#endif
133#ifdef F_GETLK64
134	{ F_GETLK64,	"F_GETLK64"	},
135#endif
136#ifdef F_SHARE
137	{ F_SHARE,	"F_SHARE"	},
138#endif
139#ifdef F_UNSHARE
140	{ F_UNSHARE,	"F_UNSHARE"	},
141#endif
142	{ 0,		NULL		},
143};
144
145static struct xlat fdflags[] = {
146#ifdef FD_CLOEXEC
147	{ FD_CLOEXEC,	"FD_CLOEXEC"	},
148#endif
149	{ 0,		NULL		},
150};
151
152#ifdef LOCK_SH
153
154static struct xlat flockcmds[] = {
155	{ LOCK_SH,	"LOCK_SH"	},
156	{ LOCK_EX,	"LOCK_EX"	},
157	{ LOCK_NB,	"LOCK_NB"	},
158	{ LOCK_UN,	"LOCK_UN"	},
159	{ 0,		NULL		},
160};
161
162#endif /* LOCK_SH */
163
164static struct xlat lockfcmds[] = {
165	{ F_RDLCK,	"F_RDLCK"	},
166	{ F_WRLCK,	"F_WRLCK"	},
167	{ F_UNLCK,	"F_UNLCK"	},
168#ifdef F_EXLCK
169	{ F_EXLCK,	"F_EXLCK"	},
170#endif
171#ifdef F_SHLCK
172	{ F_SHLCK,	"F_SHLCK"	},
173#endif
174	{ 0,		NULL		},
175};
176
177static struct xlat whence[] = {
178	{ SEEK_SET,	"SEEK_SET"	},
179	{ SEEK_CUR,	"SEEK_CUR"	},
180	{ SEEK_END,	"SEEK_END"	},
181	{ 0,		NULL		},
182};
183
184#ifndef HAVE_LONG_LONG_OFF_T
185/* fcntl/lockf */
186static void
187printflock(tcp, addr, getlk)
188struct tcb *tcp;
189long addr;
190int getlk;
191{
192	struct flock fl;
193
194	if (umove(tcp, addr, &fl) < 0) {
195		tprintf("{...}");
196		return;
197	}
198	tprintf("{type=");
199	printxval(lockfcmds, fl.l_type, "F_???");
200	tprintf(", whence=");
201	printxval(whence, fl.l_whence, "SEEK_???");
202	tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
203	if (getlk)
204		tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
205	else
206		tprintf("}");
207}
208#endif
209
210#if _LFS64_LARGEFILE || HAVE_LONG_LONG_OFF_T
211/* fcntl/lockf */
212static void
213printflock64(tcp, addr, getlk)
214struct tcb *tcp;
215int addr;
216int getlk;
217{
218	struct flock64 fl;
219
220	if (umove(tcp, addr, &fl) < 0) {
221		tprintf("{...}");
222		return;
223	}
224	tprintf("{type=");
225	printxval(lockfcmds, fl.l_type, "F_???");
226	tprintf(", whence=");
227	printxval(whence, fl.l_whence, "SEEK_???");
228	tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len);
229	if (getlk)
230		tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
231	else
232		tprintf("}");
233}
234#endif
235
236static char *
237sprintflags(xlat, flags)
238struct xlat *xlat;
239int flags;
240{
241	static char outstr[1024];
242	char *sep;
243
244	strcpy(outstr, "flags ");
245	sep = "";
246	for (; xlat->str; xlat++) {
247		if ((flags & xlat->val) == xlat->val) {
248			sprintf(outstr + strlen(outstr),
249				"%s%s", sep, xlat->str);
250			sep = "|";
251			flags &= ~xlat->val;
252		}
253	}
254	if (flags)
255		sprintf(outstr + strlen(outstr),
256			"%s%#x", sep, flags);
257	return outstr;
258}
259
260int
261sys_fcntl(tcp)
262struct tcb *tcp;
263{
264	extern struct xlat openmodes[];
265
266	if (entering(tcp)) {
267		tprintf("%ld, ", tcp->u_arg[0]);
268		printxval(fcntlcmds, tcp->u_arg[1], "F_???");
269		switch (tcp->u_arg[1]) {
270		case F_SETFD:
271			tprintf(", ");
272			if (printflags(fdflags, tcp->u_arg[2]) == 0)
273				tprintf("0");
274			break;
275		case F_SETOWN: case F_DUPFD:
276			tprintf(", %ld", tcp->u_arg[2]);
277			break;
278		case F_SETFL:
279			tprintf(", ");
280			if (printflags(openmodes, tcp->u_arg[2] + 1) == 0)
281				tprintf("0");
282			break;
283		case F_SETLK: case F_SETLKW:
284#ifdef F_FREESP
285		case F_FREESP:
286#endif
287			tprintf(", ");
288			printflock(tcp, tcp->u_arg[2], 0);
289			break;
290#if _LFS64_LARGEFILE
291#ifdef F_FREESP64
292		case F_FREESP64:
293#endif
294		/* Linux glibc defines SETLK64 as SETLK,
295		   even though the kernel has different values - as does Solaris. */
296#if defined(F_SETLK64) && F_SETLK64+0!=F_SETLK
297		case F_SETLK64:
298#endif
299#if defined(F_SETLKW64) && F_SETLKW64+0!=F_SETLKW
300		case F_SETLKW64:
301#endif
302			tprintf(", ");
303			printflock64(tcp, tcp->u_arg[2], 0);
304			break;
305#endif
306 		}
307	}
308	else {
309		switch (tcp->u_arg[1]) {
310		case F_DUPFD:
311		case F_SETFD: case F_SETFL:
312		case F_SETLK: case F_SETLKW:
313		case F_SETOWN: case F_GETOWN:
314			break;
315		case F_GETFD:
316			if (tcp->u_rval == 0)
317				return 0;
318			tcp->auxstr = sprintflags(fdflags, tcp->u_rval);
319			return RVAL_HEX|RVAL_STR;
320		case F_GETFL:
321			tcp->auxstr = sprintflags(openmodes, tcp->u_rval + 1);
322			return RVAL_HEX|RVAL_STR;
323		case F_GETLK:
324			tprintf(", ");
325			printflock(tcp, tcp->u_arg[2], 1);
326			break;
327#if _LFS64_LARGEFILE
328#if defined(F_GETLK64) && F_GETLK64+0!=F_GETLK
329		case F_GETLK64:
330#endif
331			tprintf(", ");
332			printflock64(tcp, tcp->u_arg[2], 1);
333			break;
334#endif
335 		default:
336			tprintf(", %#lx", tcp->u_arg[2]);
337			break;
338		}
339	}
340	return 0;
341}
342
343#ifdef LOCK_SH
344
345int
346sys_flock(tcp)
347struct tcb *tcp;
348{
349	if (entering(tcp)) {
350		tprintf("%ld, ", tcp->u_arg[0]);
351		if (!printflags(flockcmds, tcp->u_arg[1]))
352			tprintf("LOCK_???");
353	}
354	return 0;
355}
356#endif /* LOCK_SH */
357
358int
359sys_close(tcp)
360struct tcb *tcp;
361{
362	if (entering(tcp)) {
363		tprintf("%ld", tcp->u_arg[0]);
364	}
365	return 0;
366}
367
368int
369sys_dup(tcp)
370struct tcb *tcp;
371{
372	if (entering(tcp)) {
373		tprintf("%ld", tcp->u_arg[0]);
374	}
375	return 0;
376}
377
378int
379sys_dup2(tcp)
380struct tcb *tcp;
381{
382	if (entering(tcp)) {
383		tprintf("%ld, %ld", tcp->u_arg[0], tcp->u_arg[1]);
384	}
385	return 0;
386}
387
388int
389sys_getdtablesize(tcp)
390struct tcb *tcp;
391{
392	return 0;
393}
394
395static int
396decode_select(tcp, args, bitness)
397struct tcb *tcp;
398long *args;
399int bitness;
400{
401	int i, j, nfds;
402	fd_set fds;
403	struct timeval tv;
404#ifdef ALPHA
405	struct timeval32 {
406		unsigned tv_sec;
407		unsigned tv_usec;
408	} *tv32;
409#endif
410	static char outstr[1024];
411	char *sep;
412	long arg;
413
414	if (entering(tcp)) {
415		nfds = args[0];
416		tprintf("%d", nfds);
417		for (i = 0; i < 3; i++) {
418			arg = args[i+1];
419			if (arg == 0) {
420				tprintf(", NULL");
421				continue;
422			}
423			if (!verbose(tcp)) {
424				tprintf(", %#lx", arg);
425				continue;
426			}
427			if (umove(tcp, arg, &fds) < 0) {
428				tprintf(", [?]");
429				continue;
430			}
431			tprintf(", [");
432			for (j = 0, sep = ""; j < nfds; j++) {
433				if (FD_ISSET(j, &fds)) {
434					tprintf("%s%u", sep, j);
435					sep = " ";
436				}
437			}
438			tprintf("]");
439		}
440		if (!args[4])
441			tprintf(", NULL");
442		else if (!verbose(tcp))
443			tprintf(", %#lx", args[4]);
444		else if (umove(tcp, args[4], &tv) < 0)
445			tprintf(", {...}");
446		else {
447#ifdef ALPHA
448			if (bitness) {
449				tv32=(struct timeval32*)&tv;
450				tprintf(", {%u, %u}", tv32->tv_sec, tv32->tv_usec);
451			} else
452#endif
453				tprintf(", {%lu, %lu}",
454					(long) tv.tv_sec, (long) tv.tv_usec);
455		}
456	}
457	else
458	{
459		unsigned int cumlen = 0;
460		char *sep = "";
461
462		if (syserror(tcp))
463			return 0;
464
465		if ((nfds = tcp->u_rval) == 0) {
466			tcp->auxstr = "Timeout";
467			return RVAL_STR;
468		}
469		outstr[0] = '\0';
470		for (i = 0; i < 3; i++) {
471			int first = 1;
472			char str[20];
473
474			tcp->auxstr = outstr;
475			arg = args[i+1];
476			if (!arg || umove(tcp, arg, &fds) < 0)
477				continue;
478			for (j = 0; j < args[0]; j++) {
479				if (FD_ISSET(j, &fds)) {
480					if (first) {
481						sprintf(str, "%s%s [%u", sep,
482							i == 0 ? "in" :
483							i == 1 ? "out" :
484							"except", j);
485						first = 0;
486						sep = ", ";
487					}
488					else
489						sprintf(str, " %u", j);
490					cumlen += strlen(str);
491					if (cumlen < sizeof(outstr))
492						strcat(outstr, str);
493					nfds--;
494				}
495			}
496			if (cumlen)
497				strcat(outstr, "]");
498			if (nfds == 0)
499				break;
500		}
501#ifdef LINUX
502		/* This contains no useful information on SunOS.  */
503		if (args[4]) {
504			char str[20];
505
506			if (umove(tcp, args[4], &tv) >= 0) {
507#ifdef ALPHA
508				if (bitness) {
509					tv32=(struct timeval32*)&tv;
510					sprintf(str, "%sleft {%u, %u}", sep,
511						tv32->tv_sec, tv32->tv_usec);
512				} else
513#endif
514					sprintf(str, "%sleft {%lu, %lu}", sep,
515						(long) tv.tv_sec, (long) tv.tv_usec);
516
517				if ((cumlen += strlen(str)) < sizeof(outstr))
518					strcat(outstr, str);
519			}
520		}
521#endif /* LINUX */
522		return RVAL_STR;
523	}
524	return 0;
525}
526
527#ifdef LINUX
528
529int
530sys_oldselect(tcp)
531struct tcb *tcp;
532{
533	long args[5];
534
535	if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
536		tprintf("[...]");
537		return 0;
538	}
539	return decode_select(tcp, args, 0);
540}
541
542#ifdef ALPHA
543sys_osf_select(tcp)
544struct tcb *tcp;
545{
546	long *args = tcp->u_arg;
547	return decode_select(tcp, args, 1);
548}
549#endif
550
551#endif /* LINUX */
552
553int
554sys_select(tcp)
555struct tcb *tcp;
556{
557	long *args = tcp->u_arg;
558	return decode_select(tcp, args, 0);
559}
560