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      1 /*
      2  * Copyright (c) 1991, 1992 Paul Kranenburg <pk (at) cs.few.eur.nl>
      3  * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl>
      4  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs (at) 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: defs.h,v 1.59 2005/06/08 20:45:28 roland Exp $
     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	5000	/* 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 #define MAX_ARGS	32	/* maximum number of args to a syscall */
     64 #endif
     65 #ifndef DEFAULT_SORTBY
     66 #define DEFAULT_SORTBY "time"	/* default sorting method for call profiling */
     67 #endif
     68 
     69 #include <sys/types.h>
     70 #include <unistd.h>
     71 #include <stdlib.h>
     72 #include <stdio.h>
     73 #include <ctype.h>
     74 #include <string.h>
     75 #include <time.h>
     76 #include <sys/time.h>
     77 #include <errno.h>
     78 
     79 #ifdef STDC_HEADERS
     80 #include <stddef.h>
     81 #endif /* STDC_HEADERS */
     82 
     83 #ifdef HAVE_SIGINFO_T
     84 #include <signal.h>
     85 #endif
     86 
     87 #if defined(LINUX)
     88 #  if defined(SPARC) || defined(SPARC64)
     89 #     define LINUXSPARC
     90 #  endif
     91 #  if defined(ALPHA)
     92 #     define LINUX_64BIT
     93 #  endif
     94 #  if defined(X86_64)
     95 #     define LINUX_X86_64
     96 #  endif
     97 #endif
     98 
     99 #if defined(SVR4) || defined(FREEBSD)
    100 #define USE_PROCFS
    101 #else
    102 #undef USE_PROCFS
    103 #endif
    104 
    105 #ifdef FREEBSD
    106 #ifndef I386
    107 #error "FreeBSD support is only for i386 arch right now."
    108 #endif
    109 #include <machine/psl.h>
    110 #include <machine/reg.h>
    111 #include <sys/syscall.h>
    112 #endif
    113 
    114 #ifdef USE_PROCFS
    115 #include <sys/procfs.h>
    116 #ifdef HAVE_MP_PROCFS
    117 #include <sys/uio.h>
    118 #endif
    119 #ifdef FREEBSD
    120 #include <sys/pioctl.h>
    121 #endif /* FREEBSD */
    122 #else /* !USE_PROCFS */
    123 #if (defined(LINUXSPARC) || defined (LINUX_X86_64)) && defined(__GLIBC__)
    124 #include <sys/ptrace.h>
    125 #else
    126 /* Work around awkward prototype in ptrace.h. */
    127 #define ptrace xptrace
    128 #include <sys/ptrace.h>
    129 #undef ptrace
    130 #ifdef POWERPC
    131 #define __KERNEL__
    132 #include <asm/ptrace.h>
    133 #undef __KERNEL__
    134 #endif
    135 #ifdef __STDC__
    136 #ifdef LINUX
    137 extern long ptrace(int, int, char *, long);
    138 #else /* !LINUX */
    139 extern int ptrace(int, int, char *, int, ...);
    140 #endif /* !LINUX */
    141 #else /* !__STDC__ */
    142 extern int ptrace();
    143 #endif /* !__STDC__ */
    144 #endif /* !LINUXSPARC */
    145 #endif /* !SVR4 */
    146 
    147 #ifdef LINUX
    148 #if !defined(__GLIBC__)
    149 #define	PTRACE_PEEKUSER	PTRACE_PEEKUSR
    150 #define	PTRACE_POKEUSER	PTRACE_POKEUSR
    151 #endif
    152 #ifdef ALPHA
    153 #  define REG_R0 0
    154 #  define REG_A0 16
    155 #  define REG_A3 19
    156 #  define REG_FP 30
    157 #  define REG_PC 64
    158 #endif /* ALPHA */
    159 #ifdef MIPS
    160 #  define REG_V0 2
    161 #  define REG_A0 4
    162 #  define REG_A3 7
    163 #  define REG_SP 29
    164 #  define REG_EPC 64
    165 #endif /* MIPS */
    166 #ifdef HPPA
    167 #  define PT_GR20 (20*4)
    168 #  define PT_GR26 (26*4)
    169 #  define PT_GR28 (28*4)
    170 #  define PT_IAOQ0 (106*4)
    171 #  define PT_IAOQ1 (107*4)
    172 #endif /* HPPA */
    173 #ifdef SH64
    174    /* SH64 Linux - this code assumes the following kernel API for system calls:
    175           PC           Offset 0
    176           System Call  Offset 16 (actually, (syscall no.) | (0x1n << 16),
    177                        where n = no. of parameters.
    178           Other regs   Offset 24+
    179 
    180           On entry:    R2-7 = parameters 1-6 (as many as necessary)
    181           On return:   R9   = result. */
    182 
    183    /* Offset for peeks of registers */
    184 #  define REG_OFFSET         (24)
    185 #  define REG_GENERAL(x)     (8*(x)+REG_OFFSET)
    186 #  define REG_PC             (0*8)
    187 #  define REG_SYSCALL        (2*8)
    188 #endif /* SH64 */
    189 #endif /* LINUX */
    190 
    191 #define SUPPORTED_PERSONALITIES 1
    192 #define DEFAULT_PERSONALITY 0
    193 
    194 #ifdef LINUXSPARC
    195 #include <linux/a.out.h>
    196 #include <asm/psr.h>
    197 #undef  SUPPORTED_PERSONALITIES
    198 #if defined(SPARC64)
    199 #define SUPPORTED_PERSONALITIES 3
    200 #else
    201 #define SUPPORTED_PERSONALITIES 2
    202 #endif /* SPARC64 */
    203 #endif /* LINUXSPARC */
    204 
    205 #ifdef X86_64
    206 #undef SUPPORTED_PERSONALITIES
    207 #define SUPPORTED_PERSONALITIES 2
    208 #endif
    209 
    210 #ifdef SVR4
    211 #ifdef HAVE_MP_PROCFS
    212 extern int mp_ioctl (int f, int c, void *a, int s);
    213 #define IOCTL(f,c,a)	mp_ioctl (f, c, a, sizeof *a)
    214 #define IOCTL_STATUS(t) \
    215 	 pread (t->pfd_stat, &t->status, sizeof t->status, 0)
    216 #define IOCTL_WSTOP(t)						\
    217 	(IOCTL (t->pfd, PCWSTOP, (char *)NULL) < 0 ? -1 :		\
    218 	 IOCTL_STATUS (t))
    219 #define PR_WHY		pr_lwp.pr_why
    220 #define PR_WHAT		pr_lwp.pr_what
    221 #define PR_REG		pr_lwp.pr_context.uc_mcontext.gregs
    222 #define PR_FLAGS	pr_lwp.pr_flags
    223 #define PR_SYSCALL	pr_lwp.pr_syscall
    224 #define PR_INFO		pr_lwp.pr_info
    225 #define PIOCSTIP	PCSTOP
    226 #define PIOCSET		PCSET
    227 #define PIOCRESET	PCRESET
    228 #define PIOCSTRACE	PCSTRACE
    229 #define PIOCSFAULT	PCSFAULT
    230 #define PIOCWSTOP	PCWSTOP
    231 #define PIOCSTOP	PCSTOP
    232 #define PIOCSENTRY	PCSENTRY
    233 #define PIOCSEXIT	PCSEXIT
    234 #define PIOCRUN		PCRUN
    235 #else
    236 #define IOCTL		ioctl
    237 #define IOCTL_STATUS(t)	ioctl (t->pfd, PIOCSTATUS, &t->status)
    238 #define IOCTL_WSTOP(t)	ioctl (t->pfd, PIOCWSTOP, &t->status)
    239 #define PR_WHY		pr_why
    240 #define PR_WHAT		pr_what
    241 #define PR_REG		pr_reg
    242 #define PR_FLAGS	pr_flags
    243 #define PR_SYSCALL	pr_syscall
    244 #define PR_INFO		pr_info
    245 #endif
    246 #endif
    247 #ifdef FREEBSD
    248 #define IOCTL		ioctl
    249 #define IOCTL_STATUS(t)	ioctl (t->pfd, PIOCSTATUS, &t->status)
    250 #define IOCTL_WSTOP(t)	ioctl (t->pfd, PIOCWAIT, &t->status)
    251 #define PIOCRUN         PIOCCONT
    252 #define PIOCWSTOP       PIOCWAIT
    253 #define PR_WHY		why
    254 #define PR_WHAT		val
    255 #define PR_FLAGS	state
    256 /* from /usr/src/sys/miscfs/procfs/procfs_vnops.c,
    257    status.state = 0 for running, 1 for stopped */
    258 #define PR_ASLEEP	1
    259 #define PR_SYSENTRY     S_SCE
    260 #define PR_SYSEXIT      S_SCX
    261 #define PR_SIGNALLED    S_SIG
    262 #define PR_FAULTED      S_CORE
    263 #endif
    264 
    265 /* Trace Control Block */
    266 struct tcb {
    267 	short flags;		/* See below for TCB_ values */
    268 	int pid;		/* Process Id of this entry */
    269 	long scno;		/* System call number */
    270 	int u_nargs;		/* System call arguments */
    271 	long u_arg[MAX_ARGS];	/* System call arguments */
    272 	int u_error;		/* Error code */
    273 	long u_rval;		/* (first) return value */
    274 #ifdef HAVE_LONG_LONG
    275 	long long u_lrval;	/* long long return value */
    276 #endif
    277 	FILE *outf;		/* Output file for this process */
    278 	const char *auxstr;	/* Auxiliary info from syscall (see RVAL_STR) */
    279 	struct timeval stime;	/* System time usage as of last process wait */
    280 	struct timeval dtime;	/* Delta for system time usage */
    281 	struct timeval etime;	/* Syscall entry time */
    282 				/* Support for tracing forked processes */
    283 	struct tcb *parent;	/* Parent of this process */
    284 	int nchildren;		/* # of traced children */
    285 	int waitpid;		/* pid(s) this process is waiting for */
    286 	int nzombies;		/* # of formerly traced children now dead */
    287 #ifdef LINUX
    288 	int nclone_threads;	/* # of nchildren with CLONE_THREAD */
    289 	int nclone_detached;	/* # of nchildren with CLONE_DETACHED */
    290 	int nclone_waiting;	/* clone threads in wait4 (TCB_SUSPENDED) */
    291 #endif
    292 				/* (1st arg of wait4()) */
    293 	long baddr;		/* `Breakpoint' address */
    294 	long inst[2];		/* Instructions on above */
    295 	int pfd;		/* proc file descriptor */
    296 #ifdef SVR4
    297 #ifdef HAVE_MP_PROCFS
    298 	int pfd_stat;
    299 	int pfd_as;
    300 	pstatus_t status;
    301 #else
    302 	prstatus_t status;	/* procfs status structure */
    303 #endif
    304 #endif
    305 #ifdef FREEBSD
    306 	struct procfs_status status;
    307 	int pfd_reg;
    308 	int pfd_status;
    309 #endif
    310 };
    311 
    312 /* TCB flags */
    313 #define TCB_STARTUP	00001	/* We have just begun ptracing this process */
    314 #define TCB_INUSE	00002	/* This table entry is in use */
    315 #define TCB_INSYSCALL	00004	/* A system call is in progress */
    316 #define TCB_ATTACHED	00010	/* Process is not our own child */
    317 #define TCB_EXITING	00020	/* As far as we know, this process is exiting */
    318 #define TCB_SUSPENDED	00040	/* Process has done a wait(4), that can
    319 				   not be allowed to complete just now */
    320 #define TCB_BPTSET	00100	/* "Breakpoint" set after fork(2) */
    321 #define TCB_SIGTRAPPED	00200	/* Process wanted to block SIGTRAP */
    322 #define TCB_FOLLOWFORK	00400	/* Process should have forks followed */
    323 #define TCB_REPRINT	01000	/* We should reprint this syscall on exit */
    324 #ifdef LINUX
    325 # if defined(ALPHA) || defined(SPARC) || defined(SPARC64) || defined(POWERPC) || defined(IA64) || defined(HPPA) || defined(SH) || defined(SH64) || defined(S390) || defined(S390X) || defined(ARM)
    326 #  define TCB_WAITEXECVE 02000	/* ignore SIGTRAP after exceve */
    327 # endif
    328 # define TCB_CLONE_DETACHED 04000 /* CLONE_DETACHED set in creating syscall */
    329 # define TCB_CLONE_THREAD  010000 /* CLONE_THREAD set in creating syscall */
    330 # define TCB_GROUP_EXITING 020000 /* TCB_EXITING was exit_group, not _exit */
    331 # include <sys/syscall.h>
    332 # ifndef __NR_exit_group
    333 # /* Hack: Most headers around are too old to have __NR_exit_group.  */
    334 #  ifdef ALPHA
    335 #   define __NR_exit_group 405
    336 #  elif defined I386
    337 #   define __NR_exit_group 252
    338 #  elif defined IA64
    339 #   define __NR_exit_group 1236
    340 #  elif defined POWERPC
    341 #   define __NR_exit_group 234
    342 #  elif defined S390 || defined S390X
    343 #   define __NR_exit_group 248
    344 #  elif defined SPARC || defined SPARC64
    345 #   define __NR_exit_group 188
    346 #  endif /* ALPHA et al */
    347 # endif	/* !__NR_exit_group */
    348 #endif /* LINUX */
    349 
    350 /* qualifier flags */
    351 #define QUAL_TRACE	0001	/* this system call should be traced */
    352 #define QUAL_ABBREV	0002	/* abbreviate the structures of this syscall */
    353 #define QUAL_VERBOSE	0004	/* decode the structures of this syscall */
    354 #define QUAL_RAW	0010	/* print all args in hex for this syscall */
    355 #define QUAL_SIGNAL	0020	/* report events with this signal */
    356 #define QUAL_FAULT	0040	/* report events with this fault */
    357 #define QUAL_READ	0100	/* dump data read on this file descriptor */
    358 #define QUAL_WRITE	0200	/* dump data written to this file descriptor */
    359 
    360 #define entering(tcp)	(!((tcp)->flags & TCB_INSYSCALL))
    361 #define exiting(tcp)	((tcp)->flags & TCB_INSYSCALL)
    362 #define syserror(tcp)	((tcp)->u_error != 0)
    363 #define verbose(tcp)	(qual_flags[(tcp)->scno] & QUAL_VERBOSE)
    364 #define abbrev(tcp)	(qual_flags[(tcp)->scno] & QUAL_ABBREV)
    365 
    366 struct xlat {
    367 	int val;
    368 	char *str;
    369 };
    370 
    371 /* Format of syscall return values */
    372 #define RVAL_DECIMAL	000	/* decimal format */
    373 #define RVAL_HEX	001	/* hex format */
    374 #define RVAL_OCTAL	002	/* octal format */
    375 #define RVAL_UDECIMAL	003	/* unsigned decimal format */
    376 #define RVAL_LDECIMAL	004	/* long decimal format */
    377 #define RVAL_LHEX	005	/* long hex format */
    378 #define RVAL_LOCTAL	006	/* long octal format */
    379 #define RVAL_LUDECIMAL	007	/* long unsigned decimal format */
    380 #define RVAL_MASK	007	/* mask for these values */
    381 
    382 #define RVAL_STR	010	/* Print `auxstr' field after return val */
    383 #define RVAL_NONE	020	/* Print nothing */
    384 
    385 #ifndef offsetof
    386 #define offsetof(type, member)	(((char *) &(((type *) NULL)->member)) - \
    387 				 ((char *) (type *) NULL))
    388 #endif /* !offsetof */
    389 
    390 /* get offset of member within a user struct */
    391 #define uoff(member)	offsetof(struct user, member)
    392 
    393 #define TRACE_FILE	001	/* Trace file-related syscalls. */
    394 #define TRACE_IPC	002	/* Trace IPC-related syscalls. */
    395 #define TRACE_NETWORK	004	/* Trace network-related syscalls. */
    396 #define TRACE_PROCESS	010	/* Trace process-related syscalls. */
    397 #define TRACE_SIGNAL	020	/* Trace signal-related syscalls. */
    398 
    399 extern struct tcb **tcbtab;
    400 extern int qual_flags[];
    401 extern int debug, followfork, followvfork;
    402 extern int rflag, tflag, dtime, cflag, xflag, qflag;
    403 extern int acolumn;
    404 extern char *outfname;
    405 extern unsigned int nprocs, tcbtabsize;
    406 extern int max_strlen;
    407 extern struct tcb *tcp_last;
    408 
    409 #ifdef __STDC__
    410 #define P(args) args
    411 #else
    412 #define P(args) ()
    413 #endif
    414 
    415 extern int set_personality P((int personality));
    416 extern char *xlookup P((const struct xlat *, int));
    417 extern struct tcb *alloctcb P((int));
    418 extern struct tcb *pid2tcb P((int));
    419 extern void droptcb P((struct tcb *));
    420 extern int expand_tcbtab P((void));
    421 
    422 extern void set_sortby P((char *));
    423 extern void set_overhead P((int));
    424 extern void qualify P((char *));
    425 extern void newoutf P((struct tcb *));
    426 extern int get_scno P((struct tcb *));
    427 extern long known_scno P((struct tcb *));
    428 extern int trace_syscall P((struct tcb *));
    429 extern void printxval P((const struct xlat *, int, const char *));
    430 extern int printargs P((struct tcb *));
    431 extern int addflags P((const struct xlat *, int));
    432 extern int printflags P((const struct xlat *, int, const char *));
    433 extern int umoven P((struct tcb *, long, int, char *));
    434 extern int umovestr P((struct tcb *, long, int, char *));
    435 extern int upeek P((int, long, long *));
    436 extern void dumpiov P((struct tcb *, int, long));
    437 extern void dumpstr P((struct tcb *, long, int));
    438 extern void printstr P((struct tcb *, long, int));
    439 extern void printnum P((struct tcb *, long, char *));
    440 extern void printpath P((struct tcb *, long));
    441 extern void printpathn P((struct tcb *, long, int));
    442 extern void printtv P((struct tcb *, long));
    443 #ifdef HAVE_SIGINFO_T
    444 extern void printsiginfo P((siginfo_t *, int));
    445 #endif
    446 extern void printsock P((struct tcb *, long, int));
    447 extern void print_sock_optmgmt P((struct tcb *, long, int));
    448 extern void printrusage P((struct tcb *, long));
    449 extern void printuid P((const char *, unsigned long));
    450 extern int clearbpt P((struct tcb *));
    451 extern int setbpt P((struct tcb *));
    452 extern int sigishandled P((struct tcb *, int));
    453 extern void printcall P((struct tcb *));
    454 extern const char *signame P((int));
    455 extern void printsignal P((int));
    456 extern void printleader P((struct tcb *));
    457 extern void printtrailer P((struct tcb *));
    458 extern void tabto P((int));
    459 extern void call_summary P((FILE *));
    460 extern void printtv32 P((struct tcb*, long));
    461 extern void tprint_iov P((struct tcb *, unsigned long, unsigned long));
    462 
    463 #ifdef LINUX
    464 extern int internal_clone P((struct tcb *));
    465 #endif
    466 extern int internal_fork P((struct tcb *));
    467 extern int internal_exec P((struct tcb *));
    468 extern int internal_wait P((struct tcb *, int));
    469 extern int internal_exit P((struct tcb *));
    470 
    471 extern const struct ioctlent *ioctl_lookup P((long));
    472 extern const struct ioctlent *ioctl_next_match P((const struct ioctlent *));
    473 extern int ioctl_decode P((struct tcb *, long, long));
    474 extern int term_ioctl P((struct tcb *, long, long));
    475 extern int sock_ioctl P((struct tcb *, long, long));
    476 extern int proc_ioctl P((struct tcb *, int, int));
    477 extern int stream_ioctl P((struct tcb *, int, int));
    478 #ifdef LINUX
    479 extern int rtc_ioctl P((struct tcb *, long, long));
    480 #endif
    481 
    482 extern void tv_tv P((struct timeval *, int, int));
    483 extern int tv_nz P((struct timeval *));
    484 extern int tv_cmp P((struct timeval *, struct timeval *));
    485 extern double tv_float P((struct timeval *));
    486 extern void tv_add P((struct timeval *, struct timeval *, struct timeval *));
    487 extern void tv_sub P((struct timeval *, struct timeval *, struct timeval *));
    488 extern void tv_mul P((struct timeval *, struct timeval *, int));
    489 extern void tv_div P((struct timeval *, struct timeval *, int));
    490 
    491 #ifdef SUNOS4
    492 extern int fixvfork P((struct tcb *));
    493 #endif
    494 #if !(defined(LINUX) && !defined(SPARC) && !defined(SPARC64) && !defined(IA64))
    495 extern long getrval2 P((struct tcb *));
    496 #endif
    497 #ifdef USE_PROCFS
    498 extern int proc_open P((struct tcb *tcp, int attaching));
    499 #endif
    500 
    501 #define umove(pid, addr, objp)	\
    502 	umoven((pid), (addr), sizeof *(objp), (char *) (objp))
    503 
    504 #ifdef __STDC__
    505 #ifdef __GNUC__
    506 extern void tprintf(const char *fmt, ...)
    507 	__attribute__ ((format (printf, 1, 2)));
    508 #else
    509 extern void tprintf(const char *fmt, ...);
    510 #endif
    511 #else
    512 extern void tprintf();
    513 #endif
    514 
    515 #ifndef HAVE_STRERROR
    516 const char *strerror P((int));
    517 #endif
    518 #ifndef HAVE_STRSIGNAL
    519 const char *strsignal P((int));
    520 #endif
    521 
    522 extern int current_personality;
    523 
    524 struct sysent {
    525 	int	nargs;
    526 	int	sys_flags;
    527 	int	(*sys_func)();
    528 	const char *sys_name;
    529 	long	native_scno;	/* Match against SYS_* constants.  */
    530 };
    531 
    532 extern const struct sysent *sysent;
    533 extern int nsyscalls;
    534 
    535 extern const char *const *errnoent;
    536 extern int nerrnos;
    537 
    538 struct ioctlent {
    539 	const char *doth;
    540 	const char *symbol;
    541 	unsigned long code;
    542 };
    543 
    544 extern const struct ioctlent *ioctlent;
    545 extern int nioctlents;
    546 
    547 extern const char *const *signalent;
    548 extern int nsignals;
    549 
    550 extern const struct ioctlent ioctlent0[];
    551 extern const int nioctlents0;
    552 extern const char *const signalent0[];
    553 extern const int nsignals0;
    554 
    555 #if SUPPORTED_PERSONALITIES >= 2
    556 extern const struct ioctlent ioctlent1[];
    557 extern const int nioctlents1;
    558 extern const char *const signalent1[];
    559 extern const int nsignals1;
    560 #endif /* SUPPORTED_PERSONALITIES >= 2 */
    561 
    562 #if SUPPORTED_PERSONALITIES >= 3
    563 extern const struct ioctlent ioctlent2[];
    564 extern const int nioctlents2;
    565 extern const char *const signalent2[];
    566 extern const int nsignals2;
    567 #endif /* SUPPORTED_PERSONALITIES >= 3 */
    568 
    569 #if defined(FREEBSD) || (defined(LINUX) \
    570 			 && defined(POWERPC) && !defined(__powerpc64__)) \
    571   || (defined (LINUX) && defined (MIPS) && !defined(__mips64))
    572 /* ARRGH!  off_t args are aligned on 64 bit boundaries! */
    573 #define ALIGN64(tcp,arg)						\
    574 do {									\
    575 	if (arg % 2)							\
    576 	    memmove (&tcp->u_arg[arg], &tcp->u_arg[arg + 1],		\
    577 		     (tcp->u_nargs - arg - 1) * sizeof tcp->u_arg[0]);	\
    578 } while (0)
    579 #else
    580 #define ALIGN64(tcp,arg) do { } while (0)
    581 #endif
    582 
    583 #if HAVE_LONG_LONG
    584 
    585 /* _l refers to the lower numbered u_arg,
    586  * _h refers to the higher numbered u_arg
    587  */
    588 
    589 #if HAVE_LITTLE_ENDIAN_LONG_LONG
    590 #define LONG_LONG(_l,_h) \
    591     ((long long)((unsigned long long)(unsigned)(_l) | ((unsigned long long)(_h)<<32)))
    592 #else
    593 #define LONG_LONG(_l,_h) \
    594     ((long long)((unsigned long long)(unsigned)(_h) | ((unsigned long long)(_l)<<32)))
    595 #endif
    596 #endif
    597 
    598 #ifdef IA64
    599 extern long ia32;
    600 #endif
    601 
    602 extern int not_failing_only;
    603