defs.h revision f20b06e335baf9428a6b5d82648dc862dc4e1b41
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 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 *	$Id$
30 */
31
32#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35
36#ifdef linux
37#include <features.h>
38#endif
39
40#ifdef _LARGEFILE64_SOURCE
41/* This is the macro everything checks before using foo64 names.  */
42# ifndef _LFS64_LARGEFILE
43#  define _LFS64_LARGEFILE 1
44# endif
45#endif
46
47/* configuration section */
48#ifndef MAX_QUALS
49#if defined(LINUX) && defined(MIPS)
50#define MAX_QUALS	7000	/* maximum number of syscalls, signals, etc. */
51#else
52#define MAX_QUALS	2048	/* maximum number of syscalls, signals, etc. */
53#endif
54#endif
55#ifndef DEFAULT_STRLEN
56#define DEFAULT_STRLEN	32	/* default maximum # of bytes printed in
57				  `printstr', change with `-s' switch */
58#endif
59#ifndef DEFAULT_ACOLUMN
60#define DEFAULT_ACOLUMN	40	/* default alignment column for results */
61#endif
62#ifndef MAX_ARGS
63# ifdef HPPA
64#  define MAX_ARGS	6	/* maximum number of args to a syscall */
65# else
66#  define MAX_ARGS	32	/* maximum number of args to a syscall */
67# endif
68#endif
69#ifndef DEFAULT_SORTBY
70#define DEFAULT_SORTBY "time"	/* default sorting method for call profiling */
71#endif
72
73#include <sys/types.h>
74#include <unistd.h>
75#include <stdlib.h>
76#include <stdio.h>
77#include <ctype.h>
78#include <string.h>
79#include <time.h>
80#include <sys/time.h>
81#include <errno.h>
82
83#ifdef HAVE_STDBOOL_H
84#include <stdbool.h>
85#endif
86
87#ifdef STDC_HEADERS
88#include <stddef.h>
89#endif /* STDC_HEADERS */
90
91#ifdef HAVE_SIGINFO_T
92#include <signal.h>
93#endif
94
95#if defined(LINUX)
96#  if defined(SPARC) || defined(SPARC64)
97#     define LINUXSPARC
98#  endif
99#  if defined(X86_64)
100#     define LINUX_X86_64
101#  endif
102#  if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI32
103#     define LINUX_MIPSO32
104#  endif
105#  if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_NABI32
106#     define LINUX_MIPSN32
107#     define LINUX_MIPS64
108#  endif
109#  if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI64
110#     define LINUX_MIPSN64
111#     define LINUX_MIPS64
112#  endif
113#  if defined(ARM)
114#     define LINUX_ARM
115#  endif
116#  if defined(AVR32)
117#     define LINUX_AVR32
118#  endif
119#endif
120
121#if defined(SVR4) || defined(FREEBSD)
122#define USE_PROCFS
123#else
124#undef USE_PROCFS
125#endif
126
127#ifdef FREEBSD
128#ifndef I386
129#error "FreeBSD support is only for i386 arch right now."
130#endif
131#include <machine/psl.h>
132#include <machine/reg.h>
133#include <sys/syscall.h>
134#endif
135
136#ifdef USE_PROCFS
137#include <sys/procfs.h>
138#ifdef HAVE_MP_PROCFS
139#include <sys/uio.h>
140#endif
141#ifdef FREEBSD
142#include <sys/pioctl.h>
143#endif /* FREEBSD */
144#else /* !USE_PROCFS */
145#if (defined(LINUXSPARC) || defined(LINUX_X86_64) || defined(LINUX_ARM) || defined(LINUX_AVR32)) && defined(__GLIBC__)
146#include <sys/ptrace.h>
147#else
148/* Work around awkward prototype in ptrace.h. */
149#define ptrace xptrace
150#include <sys/ptrace.h>
151#undef ptrace
152#ifdef POWERPC
153#define __KERNEL__
154#include <asm/ptrace.h>
155#undef __KERNEL__
156#endif
157#ifdef LINUX
158extern long ptrace(int, int, char *, long);
159#else /* !LINUX */
160extern int ptrace(int, int, char *, int, ...);
161#endif /* !LINUX */
162#endif /* !LINUXSPARC */
163#endif /* !SVR4 */
164
165#ifdef LINUX
166#if !defined(__GLIBC__)
167#define	PTRACE_PEEKUSER	PTRACE_PEEKUSR
168#define	PTRACE_POKEUSER	PTRACE_POKEUSR
169#endif
170#ifdef ALPHA
171#  define REG_R0 0
172#  define REG_A0 16
173#  define REG_A3 19
174#  define REG_FP 30
175#  define REG_PC 64
176#endif /* ALPHA */
177#ifdef MIPS
178#  define REG_V0 2
179#  define REG_A0 4
180#  define REG_A3 7
181#  define REG_SP 29
182#  define REG_EPC 64
183#endif /* MIPS */
184#ifdef HPPA
185#  define PT_GR20 (20*4)
186#  define PT_GR26 (26*4)
187#  define PT_GR28 (28*4)
188#  define PT_IAOQ0 (106*4)
189#  define PT_IAOQ1 (107*4)
190#endif /* HPPA */
191#ifdef SH64
192   /* SH64 Linux - this code assumes the following kernel API for system calls:
193          PC           Offset 0
194          System Call  Offset 16 (actually, (syscall no.) | (0x1n << 16),
195                       where n = no. of parameters.
196          Other regs   Offset 24+
197
198          On entry:    R2-7 = parameters 1-6 (as many as necessary)
199          On return:   R9   = result. */
200
201   /* Offset for peeks of registers */
202#  define REG_OFFSET         (24)
203#  define REG_GENERAL(x)     (8*(x)+REG_OFFSET)
204#  define REG_PC             (0*8)
205#  define REG_SYSCALL        (2*8)
206#endif /* SH64 */
207#endif /* LINUX */
208
209#define SUPPORTED_PERSONALITIES 1
210#define DEFAULT_PERSONALITY 0
211
212#ifdef LINUXSPARC
213/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
214 * by 1 and use Ix instead of Ox.  These work for both 32 and 64 bit Linux. */
215#define U_REG_G1 0
216#define U_REG_O0 7
217#define U_REG_O1 8
218#define PERSONALITY0_WORDSIZE 4
219#define PERSONALITY1_WORDSIZE 4
220#undef  SUPPORTED_PERSONALITIES
221#if defined(SPARC64)
222#include <asm/psrcompat.h>
223#define SUPPORTED_PERSONALITIES 3
224#define PERSONALITY2_WORDSIZE 8
225#else
226#include <asm/psr.h>
227#define SUPPORTED_PERSONALITIES 2
228#endif /* SPARC64 */
229#endif /* LINUXSPARC */
230
231#ifdef X86_64
232#undef SUPPORTED_PERSONALITIES
233#define SUPPORTED_PERSONALITIES 2
234#define PERSONALITY0_WORDSIZE 8
235#define PERSONALITY1_WORDSIZE 4
236#endif
237
238#ifdef ARM
239#undef SUPPORTED_PERSONALITIES
240#define SUPPORTED_PERSONALITIES 2
241#define PERSONALITY0_WORDSIZE 4
242#define PERSONALITY1_WORDSIZE 4
243#endif
244
245#ifdef POWERPC64
246#undef SUPPORTED_PERSONALITIES
247#define SUPPORTED_PERSONALITIES 2
248#define PERSONALITY0_WORDSIZE 8
249#define PERSONALITY1_WORDSIZE 4
250#endif
251
252#ifdef SVR4
253#ifdef HAVE_MP_PROCFS
254extern int mp_ioctl (int f, int c, void *a, int s);
255#define IOCTL(f,c,a)	mp_ioctl (f, c, a, sizeof *a)
256#define IOCTL_STATUS(t) \
257	 pread (t->pfd_stat, &t->status, sizeof t->status, 0)
258#define IOCTL_WSTOP(t)						\
259	(IOCTL (t->pfd, PCWSTOP, (char *)NULL) < 0 ? -1 :		\
260	 IOCTL_STATUS (t))
261#define PR_WHY		pr_lwp.pr_why
262#define PR_WHAT		pr_lwp.pr_what
263#define PR_REG		pr_lwp.pr_context.uc_mcontext.gregs
264#define PR_FLAGS	pr_lwp.pr_flags
265#define PR_SYSCALL	pr_lwp.pr_syscall
266#define PR_INFO		pr_lwp.pr_info
267#define PIOCSTIP	PCSTOP
268#define PIOCSET		PCSET
269#define PIOCRESET	PCRESET
270#define PIOCSTRACE	PCSTRACE
271#define PIOCSFAULT	PCSFAULT
272#define PIOCWSTOP	PCWSTOP
273#define PIOCSTOP	PCSTOP
274#define PIOCSENTRY	PCSENTRY
275#define PIOCSEXIT	PCSEXIT
276#define PIOCRUN		PCRUN
277#else
278#define IOCTL		ioctl
279#define IOCTL_STATUS(t)	ioctl (t->pfd, PIOCSTATUS, &t->status)
280#define IOCTL_WSTOP(t)	ioctl (t->pfd, PIOCWSTOP, &t->status)
281#define PR_WHY		pr_why
282#define PR_WHAT		pr_what
283#define PR_REG		pr_reg
284#define PR_FLAGS	pr_flags
285#define PR_SYSCALL	pr_syscall
286#define PR_INFO		pr_info
287#endif
288#endif
289#ifdef FREEBSD
290#define IOCTL		ioctl
291#define IOCTL_STATUS(t)	ioctl (t->pfd, PIOCSTATUS, &t->status)
292#define IOCTL_WSTOP(t)	ioctl (t->pfd, PIOCWAIT, &t->status)
293#define PIOCRUN         PIOCCONT
294#define PIOCWSTOP       PIOCWAIT
295#define PR_WHY		why
296#define PR_WHAT		val
297#define PR_FLAGS	state
298/* from /usr/src/sys/miscfs/procfs/procfs_vnops.c,
299   status.state = 0 for running, 1 for stopped */
300#define PR_ASLEEP	1
301#define PR_SYSENTRY     S_SCE
302#define PR_SYSEXIT      S_SCX
303#define PR_SIGNALLED    S_SIG
304#define PR_FAULTED      S_CORE
305#endif
306
307#ifdef LINUX
308# if !HAVE_DECL_PTRACE_SETOPTIONS
309#  define PTRACE_SETOPTIONS	0x4200
310# endif
311# if !HAVE_DECL_PTRACE_GETEVENTMSG
312#  define PTRACE_GETEVENTMSG	0x4201
313# endif
314# if !HAVE_DECL_PTRACE_GETSIGINFO
315#  define PTRACE_GETSIGINFO	0x4202
316# endif
317# if !HAVE_DECL_PTRACE_O_TRACEFORK
318#  define PTRACE_O_TRACEFORK	0x00000002
319# endif
320# if !HAVE_DECL_PTRACE_O_TRACEVFORK
321#  define PTRACE_O_TRACEVFORK	0x00000004
322# endif
323# if !HAVE_DECL_PTRACE_O_TRACECLONE
324#  define PTRACE_O_TRACECLONE	0x00000008
325# endif
326
327# if !HAVE_DECL_PTRACE_EVENT_FORK
328#  define PTRACE_EVENT_FORK	1
329# endif
330# if !HAVE_DECL_PTRACE_EVENT_VFORK
331#  define PTRACE_EVENT_VFORK	2
332# endif
333# if !HAVE_DECL_PTRACE_EVENT_CLONE
334#  define PTRACE_EVENT_CLONE	3
335# endif
336#endif /* LINUX */
337
338/* Trace Control Block */
339struct tcb {
340	short flags;		/* See below for TCB_ values */
341	int pid;		/* Process Id of this entry */
342	long scno;		/* System call number */
343	int u_nargs;		/* System call arguments */
344	long u_arg[MAX_ARGS];	/* System call arguments */
345#if defined (LINUX_MIPSN32)
346	long long ext_arg[MAX_ARGS];	/* System call arguments */
347#endif
348	int u_error;		/* Error code */
349	long u_rval;		/* (first) return value */
350#ifdef HAVE_LONG_LONG
351	long long u_lrval;	/* long long return value */
352#endif
353	FILE *outf;		/* Output file for this process */
354	int curcol;		/* Output column for this process */
355	const char *auxstr;	/* Auxiliary info from syscall (see RVAL_STR) */
356	struct timeval stime;	/* System time usage as of last process wait */
357	struct timeval dtime;	/* Delta for system time usage */
358	struct timeval etime;	/* Syscall entry time */
359				/* Support for tracing forked processes */
360	struct tcb *parent;	/* Parent of this process */
361	int nchildren;		/* # of traced children */
362	int waitpid;		/* pid(s) this process is waiting for */
363	int nzombies;		/* # of formerly traced children now dead */
364#ifdef LINUX
365	int nclone_threads;	/* # of nchildren with CLONE_THREAD */
366	int nclone_waiting;	/* clone threads in wait4 (TCB_SUSPENDED) */
367#endif
368				/* (1st arg of wait4()) */
369	long baddr;		/* `Breakpoint' address */
370	long inst[2];		/* Instructions on above */
371	int pfd;		/* proc file descriptor */
372#ifdef SVR4
373#ifdef HAVE_MP_PROCFS
374	int pfd_stat;
375	int pfd_as;
376	pstatus_t status;
377#else
378	prstatus_t status;	/* procfs status structure */
379#endif
380#endif
381	int ptrace_errno;
382#ifdef FREEBSD
383	struct procfs_status status;
384	int pfd_reg;
385	int pfd_status;
386#endif
387};
388
389/* TCB flags */
390#define TCB_STARTUP	00001	/* We have just begun ptracing this process */
391#define TCB_INUSE	00002	/* This table entry is in use */
392#define TCB_INSYSCALL	00004	/* A system call is in progress */
393#define TCB_ATTACHED	00010	/* Process is not our own child */
394#define TCB_EXITING	00020	/* As far as we know, this process is exiting */
395#define TCB_SUSPENDED	00040	/* Process can not be allowed to resume just now */
396#define TCB_BPTSET	00100	/* "Breakpoint" set after fork(2) */
397#define TCB_SIGTRAPPED	00200	/* Process wanted to block SIGTRAP */
398#define TCB_FOLLOWFORK	00400	/* Process should have forks followed */
399#define TCB_REPRINT	01000	/* We should reprint this syscall on exit */
400#ifdef LINUX
401/* x86 does not need TCB_WAITEXECVE.
402 * It can detect execve's SIGTRAP by looking at eax/rax.
403 * See "stray syscall exit: eax = " message in syscall_fixup().
404 */
405# if defined(ALPHA) || defined(AVR32) || defined(SPARC) || defined(SPARC64) \
406  || defined(POWERPC) || defined(IA64) || defined(HPPA) \
407  || defined(SH) || defined(SH64) || defined(S390) || defined(S390X) \
408  || defined(ARM) || defined(MIPS) || defined(BFIN) || defined(TILE)
409#  define TCB_WAITEXECVE 02000	/* ignore SIGTRAP after exceve */
410# endif
411# define TCB_CLONE_THREAD  010000 /* CLONE_THREAD set in creating syscall */
412# define TCB_GROUP_EXITING 020000 /* TCB_EXITING was exit_group, not _exit */
413# include <sys/syscall.h>
414# ifndef __NR_exit_group
415# /* Hack: Most headers around are too old to have __NR_exit_group.  */
416#  ifdef ALPHA
417#   define __NR_exit_group 405
418#  elif defined I386
419#   define __NR_exit_group 252
420#  elif defined X86_64
421#   define __NR_exit_group 231
422#  elif defined IA64
423#   define __NR_exit_group 1236
424#  elif defined POWERPC
425#   define __NR_exit_group 234
426#  elif defined S390 || defined S390X
427#   define __NR_exit_group 248
428#  elif defined SPARC || defined SPARC64
429#   define __NR_exit_group 188
430#  elif defined M68K
431#   define __NR_exit_group 247
432#  endif /* ALPHA et al */
433# endif	/* !__NR_exit_group */
434#endif /* LINUX */
435
436/* qualifier flags */
437#define QUAL_TRACE	0001	/* this system call should be traced */
438#define QUAL_ABBREV	0002	/* abbreviate the structures of this syscall */
439#define QUAL_VERBOSE	0004	/* decode the structures of this syscall */
440#define QUAL_RAW	0010	/* print all args in hex for this syscall */
441#define QUAL_SIGNAL	0020	/* report events with this signal */
442#define QUAL_FAULT	0040	/* report events with this fault */
443#define QUAL_READ	0100	/* dump data read on this file descriptor */
444#define QUAL_WRITE	0200	/* dump data written to this file descriptor */
445
446#define entering(tcp)	(!((tcp)->flags & TCB_INSYSCALL))
447#define exiting(tcp)	((tcp)->flags & TCB_INSYSCALL)
448#define syserror(tcp)	((tcp)->u_error != 0)
449#define verbose(tcp)	(qual_flags[(tcp)->scno] & QUAL_VERBOSE)
450#define abbrev(tcp)	(qual_flags[(tcp)->scno] & QUAL_ABBREV)
451
452struct xlat {
453	int val;
454	const char *str;
455};
456
457extern const struct xlat open_mode_flags[];
458extern const struct xlat addrfams[];
459extern const struct xlat struct_user_offsets[];
460extern const struct xlat open_access_modes[];
461
462/* Format of syscall return values */
463#define RVAL_DECIMAL	000	/* decimal format */
464#define RVAL_HEX	001	/* hex format */
465#define RVAL_OCTAL	002	/* octal format */
466#define RVAL_UDECIMAL	003	/* unsigned decimal format */
467#define RVAL_LDECIMAL	004	/* long decimal format */
468#define RVAL_LHEX	005	/* long hex format */
469#define RVAL_LOCTAL	006	/* long octal format */
470#define RVAL_LUDECIMAL	007	/* long unsigned decimal format */
471#define RVAL_MASK	007	/* mask for these values */
472
473#define RVAL_STR	010	/* Print `auxstr' field after return val */
474#define RVAL_NONE	020	/* Print nothing */
475
476#ifndef offsetof
477#define offsetof(type, member)	(((char *) &(((type *) NULL)->member)) - \
478				 ((char *) (type *) NULL))
479#endif /* !offsetof */
480
481/* get offset of member within a user struct */
482#define uoff(member)	offsetof(struct user, member)
483
484#define TRACE_FILE	001	/* Trace file-related syscalls. */
485#define TRACE_IPC	002	/* Trace IPC-related syscalls. */
486#define TRACE_NETWORK	004	/* Trace network-related syscalls. */
487#define TRACE_PROCESS	010	/* Trace process-related syscalls. */
488#define TRACE_SIGNAL	020	/* Trace signal-related syscalls. */
489#define TRACE_DESC	040	/* Trace file descriptor-related syscalls. */
490#define SYSCALL_NEVER_FAILS	0100	/* Syscall is always successful. */
491
492typedef enum {
493	CFLAG_NONE = 0,
494	CFLAG_ONLY_STATS,
495	CFLAG_BOTH
496} cflag_t;
497
498extern struct tcb **tcbtab;
499extern int *qual_flags;
500extern int debug, followfork;
501extern unsigned int ptrace_setoptions;
502extern int dtime, xflag, qflag;
503extern cflag_t cflag;
504extern int acolumn;
505extern unsigned int nprocs, tcbtabsize;
506extern int max_strlen;
507extern struct tcb *tcp_last;
508
509enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
510
511extern int set_personality(int personality);
512extern const char *xlookup(const struct xlat *, int);
513extern struct tcb *alloc_tcb(int, int);
514extern struct tcb *pid2tcb(int);
515extern void droptcb(struct tcb *);
516extern void expand_tcbtab(void);
517
518#define alloctcb(pid)	alloc_tcb((pid), 1)
519
520extern void set_sortby(const char *);
521extern void set_overhead(int);
522extern void qualify(const char *);
523extern int get_scno(struct tcb *);
524extern long known_scno(struct tcb *);
525extern long do_ptrace(int request, struct tcb *tcp, void *addr, void *data);
526extern int ptrace_restart(int request, struct tcb *tcp, int sig);
527extern int force_result(struct tcb *, int, long);
528extern int trace_syscall(struct tcb *);
529extern int count_syscall(struct tcb *, struct timeval *);
530extern void printxval(const struct xlat *, int, const char *);
531extern int printargs(struct tcb *);
532extern int addflags(const struct xlat *, int);
533extern int printflags(const struct xlat *, int, const char *);
534extern const char *sprintflags(const char *, const struct xlat *, int);
535extern int umoven(struct tcb *, long, int, char *);
536extern int umovestr(struct tcb *, long, int, char *);
537extern int upeek(struct tcb *, long, long *);
538extern void dumpiov(struct tcb *, int, long);
539extern void dumpstr(struct tcb *, long, int);
540extern void printstr(struct tcb *, long, int);
541extern void printnum(struct tcb *, long, const char *);
542extern void printnum_int(struct tcb *, long, const char *);
543extern void printpath(struct tcb *, long);
544extern void printpathn(struct tcb *, long, int);
545extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
546extern void sprinttv(struct tcb *, long, enum bitness_t, char *);
547extern void print_timespec(struct tcb *, long);
548extern void sprint_timespec(char *, struct tcb *, long);
549#ifdef HAVE_SIGINFO_T
550extern void printsiginfo(siginfo_t *, int);
551#endif
552extern void printfd(struct tcb *, int);
553extern void printsock(struct tcb *, long, int);
554extern void print_sock_optmgmt(struct tcb *, long, int);
555extern void printrusage(struct tcb *, long);
556extern void printuid(const char *, unsigned long);
557extern int clearbpt(struct tcb *);
558extern int setbpt(struct tcb *);
559extern int sigishandled(struct tcb *, int);
560extern void printcall(struct tcb *);
561extern const char *signame(int);
562extern void print_sigset(struct tcb *, long, int);
563extern void printsignal(int);
564extern void printleader(struct tcb *);
565extern void printtrailer(void);
566extern void tabto(int);
567extern void call_summary(FILE *);
568extern void tprint_iov(struct tcb *, unsigned long, unsigned long);
569extern void tprint_open_modes(mode_t);
570extern const char *sprint_open_modes(mode_t);
571extern int is_restart_error(struct tcb *);
572
573extern int change_syscall(struct tcb *, int);
574extern int internal_fork(struct tcb *);
575extern int internal_exec(struct tcb *);
576extern int internal_wait(struct tcb *, int);
577extern int internal_exit(struct tcb *);
578#ifdef LINUX
579extern int handle_new_child(struct tcb *, int, int);
580#endif
581
582extern const struct ioctlent *ioctl_lookup(long);
583extern const struct ioctlent *ioctl_next_match(const struct ioctlent *);
584extern int ioctl_decode(struct tcb *, long, long);
585extern int term_ioctl(struct tcb *, long, long);
586extern int sock_ioctl(struct tcb *, long, long);
587extern int proc_ioctl(struct tcb *, int, int);
588extern int stream_ioctl(struct tcb *, int, int);
589#ifdef LINUX
590extern int rtc_ioctl(struct tcb *, long, long);
591extern int scsi_ioctl(struct tcb *, long, long);
592extern int block_ioctl(struct tcb *, long, long);
593#endif
594
595extern int tv_nz(struct timeval *);
596extern int tv_cmp(struct timeval *, struct timeval *);
597extern double tv_float(struct timeval *);
598extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
599extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
600extern void tv_mul(struct timeval *, struct timeval *, int);
601extern void tv_div(struct timeval *, struct timeval *, int);
602
603#ifdef SUNOS4
604extern int fixvfork(struct tcb *);
605#endif
606#if !(defined(LINUX) && !defined(SPARC) && !defined(SPARC64) && !defined(IA64) \
607	&& !defined(SH))
608extern long getrval2(struct tcb *);
609#endif
610#ifdef USE_PROCFS
611extern int proc_open(struct tcb *tcp, int attaching);
612#endif
613
614#define umove(pid, addr, objp)	\
615	umoven((pid), (addr), sizeof *(objp), (char *) (objp))
616
617#define printtv(tcp, addr)	\
618	printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
619#define printtv_special(tcp, addr)	\
620	printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
621
622extern void tprintf(const char *fmt, ...)
623#ifdef __GNUC__
624	__attribute__ ((format (printf, 1, 2)))
625#endif
626	;
627
628#ifndef HAVE_STRERROR
629const char *strerror(int);
630#endif
631#ifndef HAVE_STRSIGNAL
632const char *strsignal(int);
633#endif
634
635extern int current_personality;
636extern const int personality_wordsize[];
637
638struct sysent {
639	int	nargs;
640	int	sys_flags;
641	int	(*sys_func)();
642	const char *sys_name;
643	long	native_scno;	/* Match against SYS_* constants.  */
644};
645
646extern const struct sysent *sysent;
647extern int nsyscalls;
648
649extern const char *const *errnoent;
650extern int nerrnos;
651
652struct ioctlent {
653	const char *doth;
654	const char *symbol;
655	unsigned long code;
656};
657
658extern const struct ioctlent *ioctlent;
659extern int nioctlents;
660
661extern const char *const *signalent;
662extern int nsignals;
663
664extern const struct ioctlent ioctlent0[];
665extern const int nioctlents0;
666extern const char *const signalent0[];
667extern const int nsignals0;
668
669#if SUPPORTED_PERSONALITIES >= 2
670extern const struct ioctlent ioctlent1[];
671extern const int nioctlents1;
672extern const char *const signalent1[];
673extern const int nsignals1;
674#endif /* SUPPORTED_PERSONALITIES >= 2 */
675
676#if SUPPORTED_PERSONALITIES >= 3
677extern const struct ioctlent ioctlent2[];
678extern const int nioctlents2;
679extern const char *const signalent2[];
680extern const int nsignals2;
681#endif /* SUPPORTED_PERSONALITIES >= 3 */
682
683#if HAVE_LONG_LONG
684
685/* _l refers to the lower numbered u_arg,
686 * _h refers to the higher numbered u_arg
687 */
688
689#if HAVE_LITTLE_ENDIAN_LONG_LONG
690#define LONG_LONG(_l,_h) \
691    ((long long)((unsigned long long)(unsigned)(_l) | ((unsigned long long)(_h)<<32)))
692#else
693#define LONG_LONG(_l,_h) \
694    ((long long)((unsigned long long)(unsigned)(_h) | ((unsigned long long)(_l)<<32)))
695#endif
696
697extern int printllval(struct tcb *, const char *, int);
698#endif
699
700#ifdef IA64
701extern long ia32;
702#endif
703
704extern int not_failing_only;
705