desc.c - platform/external/strace - Gitiles

 /*
  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  *	$Id$
  */

 #include "defs.h"

 #include <fcntl.h>
 #include <sys/file.h>

 #if HAVE_LONG_LONG_OFF_T
 /*
  * Hacks for systems that have a long long off_t
  */
 #define flock64	flock		/* Horrid hack */
 #define printflock printflock64	/* Horrider hack */
 #endif


 static const struct xlat fcntlcmds[] = {
 	{ F_DUPFD,	"F_DUPFD"	},
 	{ F_GETFD,	"F_GETFD"	},
 	{ F_SETFD,	"F_SETFD"	},
 	{ F_GETFL,	"F_GETFL"	},
 	{ F_SETFL,	"F_SETFL"	},
 	{ F_GETLK,	"F_GETLK"	},
 	{ F_SETLK,	"F_SETLK"	},
 	{ F_SETLKW,	"F_SETLKW"	},
 	{ F_GETOWN,	"F_GETOWN"	},
 	{ F_SETOWN,	"F_SETOWN"	},
 #ifdef F_RSETLK
 	{ F_RSETLK,	"F_RSETLK"	},
 #endif
 #ifdef F_RSETLKW
 	{ F_RSETLKW,	"F_RSETLKW"	},
 #endif
 #ifdef F_RGETLK
 	{ F_RGETLK,	"F_RGETLK"	},
 #endif
 #ifdef F_CNVT
 	{ F_CNVT,	"F_CNVT"	},
 #endif
 #ifdef F_SETSIG
 	{ F_SETSIG,	"F_SETSIG"	},
 #endif
 #ifdef F_GETSIG
 	{ F_GETSIG,	"F_GETSIG"	},
 #endif
 #ifdef F_CHKFL
 	{ F_CHKFL,	"F_CHKFL"	},
 #endif
 #ifdef F_DUP2FD
 	{ F_DUP2FD,	"F_DUP2FD"	},
 #endif
 #ifdef F_ALLOCSP
 	{ F_ALLOCSP,	"F_ALLOCSP"	},
 #endif
 #ifdef F_ISSTREAM
 	{ F_ISSTREAM,	"F_ISSTREAM"	},
 #endif
 #ifdef F_PRIV
 	{ F_PRIV,	"F_PRIV"	},
 #endif
 #ifdef F_NPRIV
 	{ F_NPRIV,	"F_NPRIV"	},
 #endif
 #ifdef F_QUOTACL
 	{ F_QUOTACL,	"F_QUOTACL"	},
 #endif
 #ifdef F_BLOCKS
 	{ F_BLOCKS,	"F_BLOCKS"	},
 #endif
 #ifdef F_BLKSIZE
 	{ F_BLKSIZE,	"F_BLKSIZE"	},
 #endif
 #ifdef F_GETOWN
 	{ F_GETOWN,	"F_GETOWN"	},
 #endif
 #ifdef F_SETOWN
 	{ F_SETOWN,	"F_SETOWN"	},
 #endif
 #ifdef F_REVOKE
 	{ F_REVOKE,	"F_REVOKE"	},
 #endif
 #ifdef F_SETLK
 	{ F_SETLK,	"F_SETLK"	},
 #endif
 #ifdef F_SETLKW
 	{ F_SETLKW,	"F_SETLKW"	},
 #endif
 #ifdef F_FREESP
 	{ F_FREESP,	"F_FREESP"	},
 #endif
 #ifdef F_GETLK
 	{ F_GETLK,	"F_GETLK"	},
 #endif
 #ifdef F_SETLK64
 	{ F_SETLK64,	"F_SETLK64"	},
 #endif
 #ifdef F_SETLKW64
 	{ F_SETLKW64,	"F_SETLKW64"	},
 #endif
 #ifdef F_FREESP64
 	{ F_FREESP64,	"F_FREESP64"	},
 #endif
 #ifdef F_GETLK64
 	{ F_GETLK64,	"F_GETLK64"	},
 #endif
 #ifdef F_SHARE
 	{ F_SHARE,	"F_SHARE"	},
 #endif
 #ifdef F_UNSHARE
 	{ F_UNSHARE,	"F_UNSHARE"	},
 #endif
 	{ 0,		NULL		},
 };

 static const struct xlat fdflags[] = {
 #ifdef FD_CLOEXEC
 	{ FD_CLOEXEC,	"FD_CLOEXEC"	},
 #endif
 	{ 0,		NULL		},
 };

 #ifdef LOCK_SH

 static const struct xlat flockcmds[] = {
 	{ LOCK_SH,	"LOCK_SH"	},
 	{ LOCK_EX,	"LOCK_EX"	},
 	{ LOCK_NB,	"LOCK_NB"	},
 	{ LOCK_UN,	"LOCK_UN"	},
 	{ 0,		NULL		},
 };

 #endif /* LOCK_SH */

 static const struct xlat lockfcmds[] = {
 	{ F_RDLCK,	"F_RDLCK"	},
 	{ F_WRLCK,	"F_WRLCK"	},
 	{ F_UNLCK,	"F_UNLCK"	},
 #ifdef F_EXLCK
 	{ F_EXLCK,	"F_EXLCK"	},
 #endif
 #ifdef F_SHLCK
 	{ F_SHLCK,	"F_SHLCK"	},
 #endif
 	{ 0,		NULL		},
 };

 static const struct xlat whence[] = {
 	{ SEEK_SET,	"SEEK_SET"	},
 	{ SEEK_CUR,	"SEEK_CUR"	},
 	{ SEEK_END,	"SEEK_END"	},
 	{ 0,		NULL		},
 };

 #ifndef HAVE_LONG_LONG_OFF_T
 /* fcntl/lockf */
 static void
 printflock(tcp, addr, getlk)
 struct tcb *tcp;
 long addr;
 int getlk;
 {
 	struct flock fl;

 	if (umove(tcp, addr, &fl) < 0) {
 		tprintf("{...}");
 		return;
 	}
 	tprintf("{type=");
 	printxval(lockfcmds, fl.l_type, "F_???");
 	tprintf(", whence=");
 	printxval(whence, fl.l_whence, "SEEK_???");
 	tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
 	if (getlk)
 		tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
 	else
 		tprintf("}");
 }
 #endif

 #if _LFS64_LARGEFILE || HAVE_LONG_LONG_OFF_T
 /* fcntl/lockf */
 static void
 printflock64(tcp, addr, getlk)
 struct tcb *tcp;
 long addr;
 int getlk;
 {
 	struct flock64 fl;

 	if (umove(tcp, addr, &fl) < 0) {
 		tprintf("{...}");
 		return;
 	}
 	tprintf("{type=");
 	printxval(lockfcmds, fl.l_type, "F_???");
 	tprintf(", whence=");
 	printxval(whence, fl.l_whence, "SEEK_???");
 	tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len);
 	if (getlk)
 		tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
 	else
 		tprintf("}");
 }
 #endif

 static char *
 sprintflags(xlat, flags)
 const struct xlat *xlat;
 int flags;
 {
 	static char outstr[1024];
 	char *sep;

 	strcpy(outstr, "flags ");
 	sep = "";
 	for (; xlat->str; xlat++) {
 		if ((flags & xlat->val) == xlat->val) {
 			sprintf(outstr + strlen(outstr),
 				"%s%s", sep, xlat->str);
 			sep = "|";
 			flags &= ~xlat->val;
 		}
 	}
 	if (flags)
 		sprintf(outstr + strlen(outstr),
 			"%s%#x", sep, flags);
 	return outstr;
 }

 int
 sys_fcntl(tcp)
 struct tcb *tcp;
 {
 	extern const struct xlat openmodes[];

 	if (entering(tcp)) {
 		tprintf("%ld, ", tcp->u_arg[0]);
 		printxval(fcntlcmds, tcp->u_arg[1], "F_???");
 		switch (tcp->u_arg[1]) {
 		case F_SETFD:
 			tprintf(", ");
 			if (printflags(fdflags, tcp->u_arg[2]) == 0)
 				tprintf("0");
 			break;
 		case F_SETOWN: case F_DUPFD:
 			tprintf(", %ld", tcp->u_arg[2]);
 			break;
 		case F_SETFL:
 			tprintf(", ");
 			if (printflags(openmodes, tcp->u_arg[2] + 1) == 0)
 				tprintf("0");
 			break;
 		case F_SETLK: case F_SETLKW:
 #ifdef F_FREESP
 		case F_FREESP:
 #endif
 			tprintf(", ");
 			printflock(tcp, tcp->u_arg[2], 0);
 			break;
 #if _LFS64_LARGEFILE
 #ifdef F_FREESP64
 		case F_FREESP64:
 #endif
 		/* Linux glibc defines SETLK64 as SETLK,
 		   even though the kernel has different values - as does Solaris. */
 #if defined(F_SETLK64) && F_SETLK64+0!=F_SETLK
 		case F_SETLK64:
 #endif
 #if defined(F_SETLKW64) && F_SETLKW64+0!=F_SETLKW
 		case F_SETLKW64:
 #endif
 			tprintf(", ");
 			printflock64(tcp, tcp->u_arg[2], 0);
 			break;
 #endif
  		}
 	}
 	else {
 		switch (tcp->u_arg[1]) {
 		case F_DUPFD:
 		case F_SETFD: case F_SETFL:
 		case F_SETLK: case F_SETLKW:
 		case F_SETOWN: case F_GETOWN:
 			break;
 		case F_GETFD:
 			if (tcp->u_rval == 0)
 				return 0;
 			tcp->auxstr = sprintflags(fdflags, tcp->u_rval);
 			return RVAL_HEX|RVAL_STR;
 		case F_GETFL:
 			tcp->auxstr = sprintflags(openmodes, tcp->u_rval + 1);
 			return RVAL_HEX|RVAL_STR;
 		case F_GETLK:
 			tprintf(", ");
 			printflock(tcp, tcp->u_arg[2], 1);
 			break;
 #if _LFS64_LARGEFILE
 #if defined(F_GETLK64) && F_GETLK64+0!=F_GETLK
 		case F_GETLK64:
 #endif
 			tprintf(", ");
 			printflock64(tcp, tcp->u_arg[2], 1);
 			break;
 #endif
  		default:
 			tprintf(", %#lx", tcp->u_arg[2]);
 			break;
 		}
 	}
 	return 0;
 }

 #ifdef LOCK_SH

 int
 sys_flock(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%ld, ", tcp->u_arg[0]);
 		if (!printflags(flockcmds, tcp->u_arg[1]))
 			tprintf("LOCK_???");
 	}
 	return 0;
 }
 #endif /* LOCK_SH */

 int
 sys_close(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%ld", tcp->u_arg[0]);
 	}
 	return 0;
 }

 int
 sys_dup(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%ld", tcp->u_arg[0]);
 	}
 	return 0;
 }

 int
 sys_dup2(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%ld, %ld", tcp->u_arg[0], tcp->u_arg[1]);
 	}
 	return 0;
 }

 int
 sys_getdtablesize(tcp)
 struct tcb *tcp;
 {
 	return 0;
 }

 static int
 decode_select(tcp, args, bitness)
 struct tcb *tcp;
 long *args;
 int bitness;
 {
 	int i, j, nfds;
 	fd_set fds;
 	struct timeval tv;
 #ifdef ALPHA
 	struct timeval32 {
 		unsigned tv_sec;
 		unsigned tv_usec;
 	} *tv32;
 #endif
 	static char outstr[1024];
 	char *sep;
 	long arg;

 	if (entering(tcp)) {
 		nfds = args[0];
 		tprintf("%d", nfds);
 		for (i = 0; i < 3; i++) {
 			arg = args[i+1];
 			if (arg == 0) {
 				tprintf(", NULL");
 				continue;
 			}
 			if (!verbose(tcp)) {
 				tprintf(", %#lx", arg);
 				continue;
 			}
 			if (umove(tcp, arg, &fds) < 0) {
 				tprintf(", [?]");
 				continue;
 			}
 			tprintf(", [");
 			for (j = 0, sep = ""; j < nfds; j++) {
 				if (FD_ISSET(j, &fds)) {
 					tprintf("%s%u", sep, j);
 					sep = " ";
 				}
 			}
 			tprintf("]");
 		}
 		if (!args[4])
 			tprintf(", NULL");
 		else if (!verbose(tcp))
 			tprintf(", %#lx", args[4]);
 		else if (umove(tcp, args[4], &tv) < 0)
 			tprintf(", {...}");
 		else {
 #ifdef ALPHA
 			if (bitness) {
 				tv32=(struct timeval32*)&tv;
 				tprintf(", {%u, %u}", tv32->tv_sec, tv32->tv_usec);
 			} else
 #endif
 				tprintf(", {%lu, %lu}",
 					(long) tv.tv_sec, (long) tv.tv_usec);
 		}
 	}
 	else
 	{
 		unsigned int cumlen = 0;
 		char *sep = "";

 		if (syserror(tcp))
 			return 0;

 		if ((nfds = tcp->u_rval) == 0) {
 			tcp->auxstr = "Timeout";
 			return RVAL_STR;
 		}
 		outstr[0] = '\0';
 		for (i = 0; i < 3; i++) {
 			int first = 1;
 			char str[20];

 			tcp->auxstr = outstr;
 			arg = args[i+1];
 			if (!arg || umove(tcp, arg, &fds) < 0)
 				continue;
 			for (j = 0; j < args[0]; j++) {
 				if (FD_ISSET(j, &fds)) {
 					if (first) {
 						sprintf(str, "%s%s [%u", sep,
 							i == 0 ? "in" :
 							i == 1 ? "out" :
 							"except", j);
 						first = 0;
 						sep = ", ";
 					}
 					else
 						sprintf(str, " %u", j);
 					cumlen += strlen(str);
 					if (cumlen < sizeof(outstr))
 						strcat(outstr, str);
 					nfds--;
 				}
 			}
 			if (cumlen)
 				strcat(outstr, "]");
 			if (nfds == 0)
 				break;
 		}
 #ifdef LINUX
 		/* This contains no useful information on SunOS.  */
 		if (args[4]) {
 			char str[20];

 			if (umove(tcp, args[4], &tv) >= 0) {
 #ifdef ALPHA
 				if (bitness) {
 					tv32=(struct timeval32*)&tv;
 					sprintf(str, "%sleft {%u, %u}", sep,
 						tv32->tv_sec, tv32->tv_usec);
 				} else
 #endif
 					sprintf(str, "%sleft {%lu, %lu}", sep,
 						(long) tv.tv_sec, (long) tv.tv_usec);

 				if ((cumlen += strlen(str)) < sizeof(outstr))
 					strcat(outstr, str);
 			}
 		}
 #endif /* LINUX */
 		return RVAL_STR;
 	}
 	return 0;
 }

 #ifdef LINUX

 int
 sys_oldselect(tcp)
 struct tcb *tcp;
 {
 	long args[5];

 	if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
 		tprintf("[...]");
 		return 0;
 	}
 	return decode_select(tcp, args, 0);
 }

 #ifdef ALPHA
 int
 sys_osf_select(tcp)
 struct tcb *tcp;
 {
 	long *args = tcp->u_arg;
 	return decode_select(tcp, args, 1);
 }
 #endif

 #endif /* LINUX */

 int
 sys_select(tcp)
 struct tcb *tcp;
 {
 	long *args = tcp->u_arg;
 	return decode_select(tcp, args, 0);
 }
	/*
	* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
	* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
	* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
	* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. The name of the author may not be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* $Id$
	*/

	#include "defs.h"

	#include <fcntl.h>
	#include <sys/file.h>

	#if HAVE_LONG_LONG_OFF_T
	/*
	* Hacks for systems that have a long long off_t
	*/
	#define flock64 flock /* Horrid hack */
	#define printflock printflock64 /* Horrider hack */
	#endif


	static const struct xlat fcntlcmds[] = {
	{ F_DUPFD, "F_DUPFD" },
	{ F_GETFD, "F_GETFD" },
	{ F_SETFD, "F_SETFD" },
	{ F_GETFL, "F_GETFL" },
	{ F_SETFL, "F_SETFL" },
	{ F_GETLK, "F_GETLK" },
	{ F_SETLK, "F_SETLK" },
	{ F_SETLKW, "F_SETLKW" },
	{ F_GETOWN, "F_GETOWN" },
	{ F_SETOWN, "F_SETOWN" },
	#ifdef F_RSETLK
	{ F_RSETLK, "F_RSETLK" },
	#endif
	#ifdef F_RSETLKW
	{ F_RSETLKW, "F_RSETLKW" },
	#endif
	#ifdef F_RGETLK
	{ F_RGETLK, "F_RGETLK" },
	#endif
	#ifdef F_CNVT
	{ F_CNVT, "F_CNVT" },
	#endif
	#ifdef F_SETSIG
	{ F_SETSIG, "F_SETSIG" },
	#endif
	#ifdef F_GETSIG
	{ F_GETSIG, "F_GETSIG" },
	#endif
	#ifdef F_CHKFL
	{ F_CHKFL, "F_CHKFL" },
	#endif
	#ifdef F_DUP2FD
	{ F_DUP2FD, "F_DUP2FD" },
	#endif
	#ifdef F_ALLOCSP
	{ F_ALLOCSP, "F_ALLOCSP" },
	#endif
	#ifdef F_ISSTREAM
	{ F_ISSTREAM, "F_ISSTREAM" },
	#endif
	#ifdef F_PRIV
	{ F_PRIV, "F_PRIV" },
	#endif
	#ifdef F_NPRIV
	{ F_NPRIV, "F_NPRIV" },
	#endif
	#ifdef F_QUOTACL
	{ F_QUOTACL, "F_QUOTACL" },
	#endif
	#ifdef F_BLOCKS
	{ F_BLOCKS, "F_BLOCKS" },
	#endif
	#ifdef F_BLKSIZE
	{ F_BLKSIZE, "F_BLKSIZE" },
	#endif
	#ifdef F_GETOWN
	{ F_GETOWN, "F_GETOWN" },
	#endif
	#ifdef F_SETOWN
	{ F_SETOWN, "F_SETOWN" },
	#endif
	#ifdef F_REVOKE
	{ F_REVOKE, "F_REVOKE" },
	#endif
	#ifdef F_SETLK
	{ F_SETLK, "F_SETLK" },
	#endif
	#ifdef F_SETLKW
	{ F_SETLKW, "F_SETLKW" },
	#endif
	#ifdef F_FREESP
	{ F_FREESP, "F_FREESP" },
	#endif
	#ifdef F_GETLK
	{ F_GETLK, "F_GETLK" },
	#endif
	#ifdef F_SETLK64
	{ F_SETLK64, "F_SETLK64" },
	#endif
	#ifdef F_SETLKW64
	{ F_SETLKW64, "F_SETLKW64" },
	#endif
	#ifdef F_FREESP64
	{ F_FREESP64, "F_FREESP64" },
	#endif
	#ifdef F_GETLK64
	{ F_GETLK64, "F_GETLK64" },
	#endif
	#ifdef F_SHARE
	{ F_SHARE, "F_SHARE" },
	#endif
	#ifdef F_UNSHARE
	{ F_UNSHARE, "F_UNSHARE" },
	#endif
	{ 0, NULL },
	};

	static const struct xlat fdflags[] = {
	#ifdef FD_CLOEXEC
	{ FD_CLOEXEC, "FD_CLOEXEC" },
	#endif
	{ 0, NULL },
	};

	#ifdef LOCK_SH

	static const struct xlat flockcmds[] = {
	{ LOCK_SH, "LOCK_SH" },
	{ LOCK_EX, "LOCK_EX" },
	{ LOCK_NB, "LOCK_NB" },
	{ LOCK_UN, "LOCK_UN" },
	{ 0, NULL },
	};

	#endif /* LOCK_SH */

	static const struct xlat lockfcmds[] = {
	{ F_RDLCK, "F_RDLCK" },
	{ F_WRLCK, "F_WRLCK" },
	{ F_UNLCK, "F_UNLCK" },
	#ifdef F_EXLCK
	{ F_EXLCK, "F_EXLCK" },
	#endif
	#ifdef F_SHLCK
	{ F_SHLCK, "F_SHLCK" },
	#endif
	{ 0, NULL },
	};

	static const struct xlat whence[] = {
	{ SEEK_SET, "SEEK_SET" },
	{ SEEK_CUR, "SEEK_CUR" },
	{ SEEK_END, "SEEK_END" },
	{ 0, NULL },
	};

	#ifndef HAVE_LONG_LONG_OFF_T
	/* fcntl/lockf */
	static void
	printflock(tcp, addr, getlk)
	struct tcb *tcp;
	long addr;
	int getlk;
	{
	struct flock fl;

	if (umove(tcp, addr, &fl) < 0) {
	tprintf("{...}");
	return;
	}
	tprintf("{type=");
	printxval(lockfcmds, fl.l_type, "F_???");
	tprintf(", whence=");
	printxval(whence, fl.l_whence, "SEEK_???");
	tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
	if (getlk)
	tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
	else
	tprintf("}");
	}
	#endif

	#if _LFS64_LARGEFILE \|\| HAVE_LONG_LONG_OFF_T
	/* fcntl/lockf */
	static void
	printflock64(tcp, addr, getlk)
	struct tcb *tcp;
	long addr;
	int getlk;
	{
	struct flock64 fl;

	if (umove(tcp, addr, &fl) < 0) {
	tprintf("{...}");
	return;
	}
	tprintf("{type=");
	printxval(lockfcmds, fl.l_type, "F_???");
	tprintf(", whence=");
	printxval(whence, fl.l_whence, "SEEK_???");
	tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len);
	if (getlk)
	tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
	else
	tprintf("}");
	}
	#endif

	static char *
	sprintflags(xlat, flags)
	const struct xlat *xlat;
	int flags;
	{
	static char outstr[1024];
	char *sep;

	strcpy(outstr, "flags ");
	sep = "";
	for (; xlat->str; xlat++) {
	if ((flags & xlat->val) == xlat->val) {
	sprintf(outstr + strlen(outstr),
	"%s%s", sep, xlat->str);
	sep = "\|";
	flags &= ~xlat->val;
	}
	}
	if (flags)
	sprintf(outstr + strlen(outstr),
	"%s%#x", sep, flags);
	return outstr;
	}

	int
	sys_fcntl(tcp)
	struct tcb *tcp;
	{
	extern const struct xlat openmodes[];

	if (entering(tcp)) {
	tprintf("%ld, ", tcp->u_arg[0]);
	printxval(fcntlcmds, tcp->u_arg[1], "F_???");
	switch (tcp->u_arg[1]) {
	case F_SETFD:
	tprintf(", ");
	if (printflags(fdflags, tcp->u_arg[2]) == 0)
	tprintf("0");
	break;
	case F_SETOWN: case F_DUPFD:
	tprintf(", %ld", tcp->u_arg[2]);
	break;
	case F_SETFL:
	tprintf(", ");
	if (printflags(openmodes, tcp->u_arg[2] + 1) == 0)
	tprintf("0");
	break;
	case F_SETLK: case F_SETLKW:
	#ifdef F_FREESP
	case F_FREESP:
	#endif
	tprintf(", ");
	printflock(tcp, tcp->u_arg[2], 0);
	break;
	#if _LFS64_LARGEFILE
	#ifdef F_FREESP64
	case F_FREESP64:
	#endif
	/* Linux glibc defines SETLK64 as SETLK,
	even though the kernel has different values - as does Solaris. */
	#if defined(F_SETLK64) && F_SETLK64+0!=F_SETLK
	case F_SETLK64:
	#endif
	#if defined(F_SETLKW64) && F_SETLKW64+0!=F_SETLKW
	case F_SETLKW64:
	#endif
	tprintf(", ");
	printflock64(tcp, tcp->u_arg[2], 0);
	break;
	#endif
	}
	}
	else {
	switch (tcp->u_arg[1]) {
	case F_DUPFD:
	case F_SETFD: case F_SETFL:
	case F_SETLK: case F_SETLKW:
	case F_SETOWN: case F_GETOWN:
	break;
	case F_GETFD:
	if (tcp->u_rval == 0)
	return 0;
	tcp->auxstr = sprintflags(fdflags, tcp->u_rval);
	return RVAL_HEX\|RVAL_STR;
	case F_GETFL:
	tcp->auxstr = sprintflags(openmodes, tcp->u_rval + 1);
	return RVAL_HEX\|RVAL_STR;
	case F_GETLK:
	tprintf(", ");
	printflock(tcp, tcp->u_arg[2], 1);
	break;
	#if _LFS64_LARGEFILE
	#if defined(F_GETLK64) && F_GETLK64+0!=F_GETLK
	case F_GETLK64:
	#endif
	tprintf(", ");
	printflock64(tcp, tcp->u_arg[2], 1);
	break;
	#endif
	default:
	tprintf(", %#lx", tcp->u_arg[2]);
	break;
	}
	}
	return 0;
	}

	#ifdef LOCK_SH

	int
	sys_flock(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%ld, ", tcp->u_arg[0]);
	if (!printflags(flockcmds, tcp->u_arg[1]))
	tprintf("LOCK_???");
	}
	return 0;
	}
	#endif /* LOCK_SH */

	int
	sys_close(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%ld", tcp->u_arg[0]);
	}
	return 0;
	}

	int
	sys_dup(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%ld", tcp->u_arg[0]);
	}
	return 0;
	}

	int
	sys_dup2(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%ld, %ld", tcp->u_arg[0], tcp->u_arg[1]);
	}
	return 0;
	}

	int
	sys_getdtablesize(tcp)
	struct tcb *tcp;
	{
	return 0;
	}

	static int
	decode_select(tcp, args, bitness)
	struct tcb *tcp;
	long *args;
	int bitness;
	{
	int i, j, nfds;
	fd_set fds;
	struct timeval tv;
	#ifdef ALPHA
	struct timeval32 {
	unsigned tv_sec;
	unsigned tv_usec;
	} *tv32;
	#endif
	static char outstr[1024];
	char *sep;
	long arg;

	if (entering(tcp)) {
	nfds = args[0];
	tprintf("%d", nfds);
	for (i = 0; i < 3; i++) {
	arg = args[i+1];
	if (arg == 0) {
	tprintf(", NULL");
	continue;
	}
	if (!verbose(tcp)) {
	tprintf(", %#lx", arg);
	continue;
	}
	if (umove(tcp, arg, &fds) < 0) {
	tprintf(", [?]");
	continue;
	}
	tprintf(", [");
	for (j = 0, sep = ""; j < nfds; j++) {
	if (FD_ISSET(j, &fds)) {
	tprintf("%s%u", sep, j);
	sep = " ";
	}
	}
	tprintf("]");
	}
	if (!args[4])
	tprintf(", NULL");
	else if (!verbose(tcp))
	tprintf(", %#lx", args[4]);
	else if (umove(tcp, args[4], &tv) < 0)
	tprintf(", {...}");
	else {
	#ifdef ALPHA
	if (bitness) {
	tv32=(struct timeval32*)&tv;
	tprintf(", {%u, %u}", tv32->tv_sec, tv32->tv_usec);
	} else
	#endif
	tprintf(", {%lu, %lu}",
	(long) tv.tv_sec, (long) tv.tv_usec);
	}
	}
	else
	{
	unsigned int cumlen = 0;
	char *sep = "";

	if (syserror(tcp))
	return 0;

	if ((nfds = tcp->u_rval) == 0) {
	tcp->auxstr = "Timeout";
	return RVAL_STR;
	}
	outstr[0] = '\0';
	for (i = 0; i < 3; i++) {
	int first = 1;
	char str[20];

	tcp->auxstr = outstr;
	arg = args[i+1];
	if (!arg \|\| umove(tcp, arg, &fds) < 0)
	continue;
	for (j = 0; j < args[0]; j++) {
	if (FD_ISSET(j, &fds)) {
	if (first) {
	sprintf(str, "%s%s [%u", sep,
	i == 0 ? "in" :
	i == 1 ? "out" :
	"except", j);
	first = 0;
	sep = ", ";
	}
	else
	sprintf(str, " %u", j);
	cumlen += strlen(str);
	if (cumlen < sizeof(outstr))
	strcat(outstr, str);
	nfds--;
	}
	}
	if (cumlen)
	strcat(outstr, "]");
	if (nfds == 0)
	break;
	}
	#ifdef LINUX
	/* This contains no useful information on SunOS. */
	if (args[4]) {
	char str[20];

	if (umove(tcp, args[4], &tv) >= 0) {
	#ifdef ALPHA
	if (bitness) {
	tv32=(struct timeval32*)&tv;
	sprintf(str, "%sleft {%u, %u}", sep,
	tv32->tv_sec, tv32->tv_usec);
	} else
	#endif
	sprintf(str, "%sleft {%lu, %lu}", sep,
	(long) tv.tv_sec, (long) tv.tv_usec);

	if ((cumlen += strlen(str)) < sizeof(outstr))
	strcat(outstr, str);
	}
	}
	#endif /* LINUX */
	return RVAL_STR;
	}
	return 0;
	}

	#ifdef LINUX

	int
	sys_oldselect(tcp)
	struct tcb *tcp;
	{
	long args[5];

	if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
	tprintf("[...]");
	return 0;
	}
	return decode_select(tcp, args, 0);
	}

	#ifdef ALPHA
	int
	sys_osf_select(tcp)
	struct tcb *tcp;
	{
	long *args = tcp->u_arg;
	return decode_select(tcp, args, 1);
	}
	#endif

	#endif /* LINUX */

	int
	sys_select(tcp)
	struct tcb *tcp;
	{
	long *args = tcp->u_arg;
	return decode_select(tcp, args, 0);
	}