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strace/defs.h
Masatake YAMATO f605e92365 Use the protocol name of a socket as a hint for peer address resolution 
To resolve the peer address of socket, all combinations of families
(AF_INET, AF_INET6) and protocols(IPPROTO_TCP, IPPROTO_UDP) were tried.
This change utilizes the protocol name obtained via getxattr to specify
the right combination.

* socketutils.c (inet_print): New helper function.
(print_sockaddr_by_inode): Use it.  Utilize the protocol name
associated with the given inode for resolving the peer socket
address.  If the protocol name is NULL, resolve the address
by trying combinations of families and protocols as before.
* defs.h (print_sockaddr_by_inode): Update prototype.
* util.c (printfd): Pass the protocol name associated with
the given path to print_sockaddr_by_inode as the 2nd argument.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
2014-12-16 04:08:20 +00:00

848 lines
27 KiB
C
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/*
* 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>
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef MIPS
# include <sgidefs.h>
# if _MIPS_SIM == _MIPS_SIM_ABI64
# define LINUX_MIPSN64
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define LINUX_MIPSN32
# elif _MIPS_SIM == _MIPS_SIM_ABI32
# define LINUX_MIPSO32
# else
# error Unsupported _MIPS_SIM
# endif
#endif
#include <features.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
#endif
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#ifdef STDC_HEADERS
# include <stddef.h>
#endif
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
/* Open-coding isprint(ch) et al proved more efficient than calling
* generalized libc interface. We don't *want* to do non-ASCII anyway.
*/
/* #include <ctype.h> */
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/syscall.h>
#ifndef HAVE_STRERROR
const char *strerror(int);
#endif
#ifndef HAVE_STPCPY
/* Some libc have stpcpy, some don't. Sigh...
* Roll our private implementation...
*/
#undef stpcpy
#define stpcpy strace_stpcpy
extern char *stpcpy(char *dst, const char *src);
#endif
#if !defined __GNUC__
# define __attribute__(x) /*nothing*/
#endif
#ifndef offsetof
# define offsetof(type, member) \
(((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
#endif
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
/* macros */
#ifndef MAX
# define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef MIN
# define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
#define CLAMP(val, min, max) MIN(MAX(min, val), max)
/* Glibc has an efficient macro for sigemptyset
* (it just does one or two assignments of 0 to internal vector of longs).
*/
#if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
# define sigemptyset __sigemptyset
#endif
/* Configuration section */
#ifndef DEFAULT_STRLEN
/* default maximum # of bytes printed in `printstr', change with -s switch */
# define DEFAULT_STRLEN 32
#endif
#ifndef DEFAULT_ACOLUMN
# define DEFAULT_ACOLUMN 40 /* default alignment column for results */
#endif
/*
* Maximum number of args to a syscall.
*
* Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
* linux/<ARCH>/syscallent*.h:
* all have nargs <= 6 except mips o32 which has nargs <= 7.
*/
#ifndef MAX_ARGS
# ifdef LINUX_MIPSO32
# define MAX_ARGS 7
# else
# define MAX_ARGS 6
# endif
#endif
/* default sorting method for call profiling */
#ifndef DEFAULT_SORTBY
# define DEFAULT_SORTBY "time"
#endif
/*
* Experimental code using PTRACE_SEIZE can be enabled here.
* This needs Linux kernel 3.4.x or later to work.
*/
#define USE_SEIZE 1
/* To force NOMMU build, set to 1 */
#define NOMMU_SYSTEM 0
/*
* Set to 1 to use speed-optimized vfprintf implementation.
* It results in strace using about 5% less CPU in user space
* (compared to glibc version).
* But strace spends a lot of time in kernel space,
* so overall it does not appear to be a significant win.
* Thus disabled by default.
*/
#define USE_CUSTOM_PRINTF 0
#ifdef NEED_PTRACE_PROTOTYPE_WORKAROUND
# define ptrace xptrace
# include <sys/ptrace.h>
# undef ptrace
extern long ptrace(int, int, char *, long);
#else
# include <sys/ptrace.h>
#endif
#if defined(POWERPC)
# include <asm/ptrace.h>
#endif
#if defined(TILE)
# include <asm/ptrace.h> /* struct pt_regs */
#endif
#ifndef ERESTARTSYS
# define ERESTARTSYS 512
#endif
#ifndef ERESTARTNOINTR
# define ERESTARTNOINTR 513
#endif
#ifndef ERESTARTNOHAND
# define ERESTARTNOHAND 514
#endif
#ifndef ERESTART_RESTARTBLOCK
# define ERESTART_RESTARTBLOCK 516
#endif
#if !HAVE_DECL_PTRACE_SETOPTIONS
# define PTRACE_SETOPTIONS 0x4200
#endif
#if !HAVE_DECL_PTRACE_GETEVENTMSG
# define PTRACE_GETEVENTMSG 0x4201
#endif
#if !HAVE_DECL_PTRACE_GETSIGINFO
# define PTRACE_GETSIGINFO 0x4202
#endif
#if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
# define PTRACE_O_TRACESYSGOOD 0x00000001
#endif
#if !HAVE_DECL_PTRACE_O_TRACEFORK
# define PTRACE_O_TRACEFORK 0x00000002
#endif
#if !HAVE_DECL_PTRACE_O_TRACEVFORK
# define PTRACE_O_TRACEVFORK 0x00000004
#endif
#if !HAVE_DECL_PTRACE_O_TRACECLONE
# define PTRACE_O_TRACECLONE 0x00000008
#endif
#if !HAVE_DECL_PTRACE_O_TRACEEXEC
# define PTRACE_O_TRACEEXEC 0x00000010
#endif
#if !HAVE_DECL_PTRACE_O_TRACEEXIT
# define PTRACE_O_TRACEEXIT 0x00000040
#endif
#if !HAVE_DECL_PTRACE_EVENT_FORK
# define PTRACE_EVENT_FORK 1
#endif
#if !HAVE_DECL_PTRACE_EVENT_VFORK
# define PTRACE_EVENT_VFORK 2
#endif
#if !HAVE_DECL_PTRACE_EVENT_CLONE
# define PTRACE_EVENT_CLONE 3
#endif
#if !HAVE_DECL_PTRACE_EVENT_EXEC
# define PTRACE_EVENT_EXEC 4
#endif
#if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
# define PTRACE_EVENT_VFORK_DONE 5
#endif
#if !HAVE_DECL_PTRACE_EVENT_EXIT
# define PTRACE_EVENT_EXIT 6
#endif
#if !HAVE_DECL_PTRACE_PEEKUSER
# define PTRACE_PEEKUSER PTRACE_PEEKUSR
#endif
#if !HAVE_DECL_PTRACE_POKEUSER
# define PTRACE_POKEUSER PTRACE_POKEUSR
#endif
#undef PTRACE_SEIZE
#define PTRACE_SEIZE 0x4206
#undef PTRACE_INTERRUPT
#define PTRACE_INTERRUPT 0x4207
#undef PTRACE_LISTEN
#define PTRACE_LISTEN 0x4208
#undef PTRACE_EVENT_STOP
#define PTRACE_EVENT_STOP 128
#ifdef ALPHA
# define REG_R0 0
# define REG_A0 16
# define REG_A3 19
# define REG_FP 30
# define REG_PC 64
#endif /* ALPHA */
#ifdef MIPS
# define REG_V0 2
# define REG_A0 4
# define REG_A3 7
# define REG_SP 29
# define REG_EPC 64
#endif /* MIPS */
#ifdef HPPA
# define PT_GR20 (20*4)
# define PT_GR26 (26*4)
# define PT_GR28 (28*4)
# define PT_IAOQ0 (106*4)
# define PT_IAOQ1 (107*4)
#endif /* HPPA */
#ifdef SH64
/* SH64 Linux - this code assumes the following kernel API for system calls:
PC Offset 0
System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
where n = no. of parameters.
Other regs Offset 24+
On entry: R2-7 = parameters 1-6 (as many as necessary)
On return: R9 = result. */
/* Offset for peeks of registers */
# define REG_OFFSET (24)
# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
# define REG_PC (0*8)
# define REG_SYSCALL (2*8)
#endif /* SH64 */
#ifdef AARCH64
struct arm_pt_regs {
int uregs[18];
};
# define ARM_cpsr uregs[16]
# define ARM_pc uregs[15]
# define ARM_lr uregs[14]
# define ARM_sp uregs[13]
# define ARM_ip uregs[12]
# define ARM_fp uregs[11]
# define ARM_r10 uregs[10]
# define ARM_r9 uregs[9]
# define ARM_r8 uregs[8]
# define ARM_r7 uregs[7]
# define ARM_r6 uregs[6]
# define ARM_r5 uregs[5]
# define ARM_r4 uregs[4]
# define ARM_r3 uregs[3]
# define ARM_r2 uregs[2]
# define ARM_r1 uregs[1]
# define ARM_r0 uregs[0]
# define ARM_ORIG_r0 uregs[17]
#endif /* AARCH64 */
#if defined(SPARC) || defined(SPARC64)
/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
* by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
# define U_REG_G1 0
# define U_REG_O0 7
# define U_REG_O1 8
# define PERSONALITY0_WORDSIZE 4
# define PERSONALITY1_WORDSIZE 4
# if defined(SPARC64)
# include <asm/psrcompat.h>
# define SUPPORTED_PERSONALITIES 3
# define PERSONALITY2_WORDSIZE 8
# else
# include <asm/psr.h>
# define SUPPORTED_PERSONALITIES 2
# endif /* SPARC64 */
#endif /* SPARC[64] */
#ifdef X86_64
# define SUPPORTED_PERSONALITIES 3
# define PERSONALITY0_WORDSIZE 8
# define PERSONALITY1_WORDSIZE 4
# define PERSONALITY2_WORDSIZE 4
#endif
#ifdef X32
# define SUPPORTED_PERSONALITIES 2
# define PERSONALITY0_WORDSIZE 4
# define PERSONALITY1_WORDSIZE 4
#endif
#ifdef ARM
/* one personality */
#endif
#ifdef AARCH64
/* The existing ARM personality, then AArch64 */
# define SUPPORTED_PERSONALITIES 2
# define PERSONALITY0_WORDSIZE 4
# define PERSONALITY1_WORDSIZE 8
# define DEFAULT_PERSONALITY 1
#endif
#ifdef POWERPC64
# define SUPPORTED_PERSONALITIES 2
# define PERSONALITY0_WORDSIZE 8
# define PERSONALITY1_WORDSIZE 4
#endif
#ifdef TILE
# define SUPPORTED_PERSONALITIES 2
# define PERSONALITY0_WORDSIZE 8
# define PERSONALITY1_WORDSIZE 4
# ifdef __tilepro__
# define DEFAULT_PERSONALITY 1
# endif
#endif
#ifndef SUPPORTED_PERSONALITIES
# define SUPPORTED_PERSONALITIES 1
#endif
#ifndef DEFAULT_PERSONALITY
# define DEFAULT_PERSONALITY 0
#endif
#ifndef PERSONALITY0_WORDSIZE
# define PERSONALITY0_WORDSIZE SIZEOF_LONG
#endif
#if defined(I386) || defined(X86_64)
extern uint32_t *const i386_esp_ptr;
#elif defined(IA64)
extern bool ia64_ia32mode;
#elif defined(SPARC) || defined(SPARC64)
extern struct pt_regs sparc_regs;
#elif defined(ARM)
extern struct pt_regs arm_regs;
#elif defined(TILE)
extern struct pt_regs tile_regs;
#elif defined(POWERPC)
extern struct pt_regs ppc_regs;
#endif
typedef struct sysent {
unsigned nargs;
int sys_flags;
int (*sys_func)();
const char *sys_name;
} struct_sysent;
typedef struct ioctlent {
const char *symbol;
unsigned long code;
} struct_ioctlent;
/* Trace Control Block */
struct tcb {
int flags; /* See below for TCB_ values */
int pid; /* If 0, this tcb is free */
int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
int u_error; /* Error code */
long scno; /* System call number */
long u_arg[MAX_ARGS]; /* System call arguments */
#if defined(LINUX_MIPSN32) || defined(X32)
long long ext_arg[MAX_ARGS];
long long u_lrval; /* long long return value */
#endif
long u_rval; /* Return value */
#if SUPPORTED_PERSONALITIES > 1
unsigned int currpers; /* Personality at the time of scno update */
#endif
int curcol; /* Output column for this process */
FILE *outf; /* Output file for this process */
const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
struct timeval stime; /* System time usage as of last process wait */
struct timeval dtime; /* Delta for system time usage */
struct timeval etime; /* Syscall entry time */
/* Support for tracing forked processes: */
long inst[2]; /* Saved clone args (badly named) */
#ifdef USE_LIBUNWIND
struct UPT_info* libunwind_ui;
struct mmap_cache_t* mmap_cache;
unsigned int mmap_cache_size;
unsigned int mmap_cache_generation;
struct queue_t* queue;
#endif
};
/* TCB flags */
/* We have attached to this process, but did not see it stopping yet */
#define TCB_STARTUP 0x01
#define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
/*
* Are we in system call entry or in syscall exit?
*
* This bit is set after all syscall entry processing is done.
* Therefore, this bit will be set when next ptrace stop occurs,
* which should be syscall exit stop. Other stops which are possible
* directly after syscall entry (death, ptrace event stop)
* are simpler and handled without calling trace_syscall(), therefore
* the places where TCB_INSYSCALL can be set but we aren't in syscall stop
* are limited to trace(), this condition is never observed in trace_syscall()
* and below.
* The bit is cleared after all syscall exit processing is done.
* User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
* to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
* TCB_WAITEXECVE bit is used for this purpose (see below).
*
* Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
*/
#define TCB_INSYSCALL 0x04
#define TCB_ATTACHED 0x08 /* We attached to it already */
#define TCB_BPTSET 0x10 /* "Breakpoint" set after fork(2) */
#define TCB_REPRINT 0x20 /* We should reprint this syscall on exit */
#define TCB_FILTERED 0x40 /* This system call has been filtered out */
/*
* x86 does not need TCB_WAITEXECVE.
* It can detect post-execve SIGTRAP by looking at eax/rax.
* See "not a syscall entry (eax = %ld)\n" message.
*
* Note! On new kernels (about 2.5.46+), we use PTRACE_O_TRACEEXEC, which
* suppresses post-execve SIGTRAP. If you are adding a new arch which is
* only supported by newer kernels, you most likely don't need to define
* TCB_WAITEXECVE!
*/
#if defined(ALPHA) \
|| defined(SPARC) || defined(SPARC64) \
|| defined(POWERPC) \
|| defined(IA64) \
|| defined(HPPA) \
|| defined(SH) || defined(SH64) \
|| defined(S390) || defined(S390X) \
|| defined(ARM) \
|| defined(MIPS)
/* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
* to happen. (When it is detected, tracee is continued and this bit is cleared.)
*/
# define TCB_WAITEXECVE 0x80
#endif
/* qualifier flags */
#define QUAL_TRACE 0x001 /* this system call should be traced */
#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
#define QUAL_RAW 0x008 /* print all args in hex for this syscall */
#define QUAL_SIGNAL 0x010 /* report events with this signal */
#define QUAL_READ 0x020 /* dump data read on this file descriptor */
#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
typedef uint8_t qualbits_t;
#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */
#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
#define syserror(tcp) ((tcp)->u_error != 0)
#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
struct xlat {
unsigned int val;
const char *str;
};
#define XLAT(x) { x, #x }
#define XLAT_END { 0, NULL }
extern const struct xlat addrfams[];
extern const struct xlat at_flags[];
extern const struct xlat open_access_modes[];
extern const struct xlat open_mode_flags[];
extern const struct xlat whence_codes[];
/* Format of syscall return values */
#define RVAL_DECIMAL 000 /* decimal format */
#define RVAL_HEX 001 /* hex format */
#define RVAL_OCTAL 002 /* octal format */
#define RVAL_UDECIMAL 003 /* unsigned decimal format */
#if defined(LINUX_MIPSN32) || defined(X32)
# if 0 /* unused so far */
# define RVAL_LDECIMAL 004 /* long decimal format */
# define RVAL_LHEX 005 /* long hex format */
# define RVAL_LOCTAL 006 /* long octal format */
# endif
# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
#endif
#define RVAL_FD 010 /* file descriptor */
#define RVAL_MASK 017 /* mask for these values */
#define RVAL_STR 020 /* Print `auxstr' field after return val */
#define RVAL_NONE 040 /* Print nothing */
#define TRACE_FILE 001 /* Trace file-related syscalls. */
#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
#if defined(ARM) || defined(AARCH64) \
|| defined(I386) || defined(X32) || defined(X86_64) \
|| defined(BFIN) \
|| defined(M68K) \
|| defined(MICROBLAZE) \
|| defined(S390) \
|| defined(SH) || defined(SH64) \
|| defined(SPARC) || defined(SPARC64) \
/**/
# define NEED_UID16_PARSERS 1
#else
# define NEED_UID16_PARSERS 0
#endif
typedef enum {
CFLAG_NONE = 0,
CFLAG_ONLY_STATS,
CFLAG_BOTH
} cflag_t;
extern cflag_t cflag;
extern bool debug_flag;
extern bool Tflag;
extern bool iflag;
extern bool count_wallclock;
extern unsigned int qflag;
extern bool not_failing_only;
extern unsigned int show_fd_path;
extern bool hide_log_until_execve;
/* are we filtering traces based on paths? */
extern const char **paths_selected;
#define tracing_paths (paths_selected != NULL)
extern bool need_fork_exec_workarounds;
extern unsigned xflag;
extern unsigned followfork;
#ifdef USE_LIBUNWIND
/* if this is true do the stack trace for every system call */
extern bool stack_trace_enabled;
#endif
extern unsigned ptrace_setoptions;
extern unsigned max_strlen;
extern unsigned os_release;
#undef KERNEL_VERSION
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
void die_out_of_memory(void) __attribute__ ((noreturn));
#if USE_CUSTOM_PRINTF
/*
* See comment in vsprintf.c for allowed formats.
* Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
*/
int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
#else
# define strace_vfprintf vfprintf
#endif
extern void set_sortby(const char *);
extern void set_overhead(int);
extern void qualify(const char *);
extern void print_pc(struct tcb *);
extern int trace_syscall(struct tcb *);
extern void count_syscall(struct tcb *, const struct timeval *);
extern void call_summary(FILE *);
#if defined(AVR32) \
|| defined(I386) \
|| defined(X86_64) || defined(X32) \
|| defined(AARCH64) \
|| defined(ARM) \
|| defined(SPARC) || defined(SPARC64) \
|| defined(TILE) \
|| defined(OR1K) \
|| defined(METAG) \
|| defined(ARC) \
|| defined(POWERPC)
extern long get_regs_error;
# define clear_regs() (get_regs_error = -1)
extern void get_regs(pid_t pid);
#else
# define get_regs_error 0
# define clear_regs() ((void)0)
# define get_regs(pid) ((void)0)
#endif
extern int umoven(struct tcb *, long, int, char *);
#define umove(pid, addr, objp) \
umoven((pid), (addr), sizeof(*(objp)), (char *) (objp))
extern int umovestr(struct tcb *, long, int, char *);
extern int upeek(int pid, long, long *);
#if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
extern long getrval2(struct tcb *);
#endif
/*
* On Linux, "setbpt" is a misnomer: we don't set a breakpoint
* (IOW: no poking in user's text segment),
* instead we change fork/vfork/clone into clone(CLONE_PTRACE).
* On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
*/
extern int setbpt(struct tcb *);
extern int clearbpt(struct tcb *);
extern const char *signame(const int);
extern void pathtrace_select(const char *);
extern int pathtrace_match(struct tcb *);
extern int getfdpath(struct tcb *, int, char *, unsigned);
extern const char *xlookup(const struct xlat *, const unsigned int);
extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int);
extern int string_to_uint(const char *str);
extern int string_quote(const char *, char *, long, int);
extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
/* a refers to the lower numbered u_arg,
* b refers to the higher numbered u_arg
*/
#if HAVE_LITTLE_ENDIAN_LONG_LONG
# define LONG_LONG(a,b) \
((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
#else
# define LONG_LONG(a,b) \
((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
#endif
extern int printllval(struct tcb *, const char *, int);
extern void printxval(const struct xlat *, const unsigned int, const char *);
extern int printargs(struct tcb *);
extern int printargs_lu(struct tcb *);
extern int printargs_ld(struct tcb *);
extern void addflags(const struct xlat *, int);
extern int printflags(const struct xlat *, int, const char *);
extern const char *sprintflags(const char *, const struct xlat *, int);
extern const char *sprintmode(int);
extern const char *sprinttime(time_t);
extern void dumpiov_in_msghdr(struct tcb *, long);
extern void dumpiov_in_mmsghdr(struct tcb *, long);
extern void dumpiov(struct tcb *, int, long);
extern void dumpstr(struct tcb *, long, int);
extern void printstr(struct tcb *, long, long);
extern void printnum(struct tcb *, long, const char *);
extern void printnum_int(struct tcb *, long, const char *);
extern void printpath(struct tcb *, long);
extern void printpathn(struct tcb *, long, unsigned int);
#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
#define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE
extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
#define printtv(tcp, addr) \
printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
#define printtv_special(tcp, addr) \
printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
extern void print_timespec(struct tcb *, long);
extern void sprint_timespec(char *, struct tcb *, long);
#ifdef HAVE_SIGINFO_T
extern void printsiginfo(siginfo_t *, int);
extern void printsiginfo_at(struct tcb *tcp, long addr);
#endif
extern void printfd(struct tcb *, int);
extern bool print_sockaddr_by_inode(const unsigned long, const char *);
extern void print_dirfd(struct tcb *, int);
extern void printsock(struct tcb *, long, int);
extern void print_sock_optmgmt(struct tcb *, long, int);
extern void printrusage(struct tcb *, long);
#ifdef ALPHA
extern void printrusage32(struct tcb *, long);
#endif
extern void printuid(const char *, const unsigned int);
extern void print_sigset_addr_len(struct tcb *, long, long);
extern void printsignal(int);
extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
extern void tprint_open_modes(int);
extern const char *sprint_open_modes(int);
extern void print_loff_t(struct tcb *, long);
extern const struct_ioctlent *ioctl_lookup(unsigned long);
extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
extern int ioctl_decode(struct tcb *, long, long);
extern int term_ioctl(struct tcb *, long, long);
extern int sock_ioctl(struct tcb *, long, long);
extern int proc_ioctl(struct tcb *, int, int);
extern int rtc_ioctl(struct tcb *, long, long);
extern int scsi_ioctl(struct tcb *, long, long);
extern int block_ioctl(struct tcb *, long, long);
extern int v4l2_ioctl(struct tcb *, unsigned long, long);
extern int mtd_ioctl(struct tcb *, long, long);
extern int ubi_ioctl(struct tcb *, long, long);
extern int loop_ioctl(struct tcb *, long, long);
extern int ptp_ioctl(struct tcb *, long, long);
extern int tv_nz(const struct timeval *);
extern int tv_cmp(const struct timeval *, const struct timeval *);
extern double tv_float(const struct timeval *);
extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
extern void tv_mul(struct timeval *, const struct timeval *, int);
extern void tv_div(struct timeval *, const struct timeval *, int);
#ifdef USE_LIBUNWIND
extern void unwind_init(void);
extern void unwind_tcb_init(struct tcb *tcp);
extern void unwind_tcb_fin(struct tcb *tcp);
extern void unwind_cache_invalidate(struct tcb* tcp);
extern void unwind_print_stacktrace(struct tcb* tcp);
extern void unwind_capture_stacktrace(struct tcb* tcp);
#endif
/* Strace log generation machinery.
*
* printing_tcp: tcb which has incomplete line being printed right now.
* NULL if last line has been completed ('\n'-terminated).
* printleader(tcp) examines it, finishes incomplete line if needed,
* the sets it to tcp.
* line_ended() clears printing_tcp and resets ->curcol = 0.
* tcp->curcol == 0 check is also used to detect completeness
* of last line, since in -ff mode just checking printing_tcp for NULL
* is not enough.
*
* If you change this code, test log generation in both -f and -ff modes
* using:
* strace -oLOG -f[f] test/threaded_execve
* strace -oLOG -f[f] test/sigkill_rain
* strace -oLOG -f[f] -p "`pidof web_browser`"
*/
extern struct tcb *printing_tcp;
extern void printleader(struct tcb *);
extern void line_ended(void);
extern void tabto(void);
extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
extern void tprints(const char *str);
#if SUPPORTED_PERSONALITIES > 1
extern void set_personality(int personality);
extern unsigned current_personality;
#else
# define set_personality(personality) ((void)0)
# define current_personality 0
#endif
#if SUPPORTED_PERSONALITIES == 1
# define current_wordsize PERSONALITY0_WORDSIZE
#else
# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
# define current_wordsize PERSONALITY0_WORDSIZE
# else
extern unsigned current_wordsize;
# endif
#endif
/* In many, many places we play fast and loose and use
* tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
* We probably need to use widen_to_long() instead:
*/
#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
#else
# define widen_to_long(v) ((long)(v))
#endif
extern const struct_sysent sysent0[];
extern const char *const errnoent0[];
extern const char *const signalent0[];
extern const struct_ioctlent ioctlent0[];
extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
#define qual_flags (qual_vec[current_personality])
#if SUPPORTED_PERSONALITIES > 1
extern const struct_sysent *sysent;
extern const char *const *errnoent;
extern const char *const *signalent;
extern const struct_ioctlent *ioctlent;
#else
# define sysent sysent0
# define errnoent errnoent0
# define signalent signalent0
# define ioctlent ioctlent0
#endif
extern unsigned nsyscalls;
extern unsigned nerrnos;
extern unsigned nsignals;
extern unsigned nioctlents;
extern unsigned num_quals;
/*
* If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
*/
#define SCNO_IS_VALID(scno) \
((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
/* Only ensures that sysent[scno] isn't out of range */
#define SCNO_IN_RANGE(scno) \
((unsigned long)(scno) < nsyscalls)
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