/*
* 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) 1999-2022 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef STRACE_DEFS_H
# define STRACE_DEFS_H
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include <features.h>
# include <stdbool.h>
# include <stdint.h>
# include <inttypes.h>
# include <sys/types.h>
# include <stddef.h>
# 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 <time.h>
# include <sys/time.h>
# include "arch_defs.h"
# include "error_prints.h"
# include "gcc_compat.h"
# include "kernel_types.h"
# include "list.h"
# include "macros.h"
# include "mpers_type.h"
# include "string_to_uint.h"
# include "sysent.h"
# include "xmalloc.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
/* 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
/* To force NOMMU build, set to 1 */
# define NOMMU_SYSTEM 0
# 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
# define PERSONALITY0_WORDSIZE SIZEOF_LONG
# define PERSONALITY0_KLONGSIZE SIZEOF_KERNEL_LONG_T
# define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
# define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
# if SUPPORTED_PERSONALITIES > 1
# define PERSONALITY1_WORDSIZE 4
# define PERSONALITY1_KLONGSIZE PERSONALITY1_WORDSIZE
# endif
# if SUPPORTED_PERSONALITIES > 2
# define PERSONALITY2_WORDSIZE 4
# define PERSONALITY2_KLONGSIZE PERSONALITY0_KLONGSIZE
# endif
# if SUPPORTED_PERSONALITIES > 1 && defined HAVE_M32_MPERS
# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
# define HAVE_PERSONALITY_1_MPERS 1
# else
# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
# define PERSONALITY1_INCLUDE_FUNCS "empty.h"
# define HAVE_PERSONALITY_1_MPERS 0
# endif
# if SUPPORTED_PERSONALITIES > 2 && defined HAVE_MX32_MPERS
# define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
# define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
# define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
# define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
# define HAVE_PERSONALITY_2_MPERS 1
# else
# define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
# define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
# define PERSONALITY2_INCLUDE_FUNCS "empty.h"
# define HAVE_PERSONALITY_2_MPERS 0
# endif
# ifdef WORDS_BIGENDIAN
# define is_bigendian true
# else
# define is_bigendian false
# endif
# if SUPPORTED_PERSONALITIES > 1
extern void set_personality(unsigned 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
# define current_klongsize PERSONALITY0_KLONGSIZE
# else
# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
# define current_wordsize PERSONALITY0_WORDSIZE
# else
extern unsigned current_wordsize;
# endif
# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_KLONGSIZE == PERSONALITY1_KLONGSIZE
# define current_klongsize PERSONALITY0_KLONGSIZE
# else
extern unsigned current_klongsize;
# endif
# endif
# define max_addr() (~0ULL >> ((8 - current_wordsize) * 8))
# define max_kaddr() (~0ULL >> ((8 - current_klongsize) * 8))
/* Shorthands for defining word/klong-based dispatcher function bodies */
# ifndef current_wordsize
# define opt_wordsize(opt_64_, opt_32_) \
((current_wordsize > sizeof(uint32_t)) ? (opt_64_) : (opt_32_))
# define dispatch_wordsize(call_64_, call_32_, ...) \
((current_wordsize > sizeof(uint32_t)) \
? (call_64_)(__VA_ARGS__) : (call_32_)(__VA_ARGS__))
# else /* defined current_wordsize */
# if current_wordsize > 4
# define opt_wordsize(opt_64_, opt_32_) (opt_64_)
# define dispatch_wordsize(call_64_, call_32_, ...) ((call_64_)(__VA_ARGS__))
# else /* current_wordsize == 4 */
# define opt_wordsize(opt_64_, opt_32_) (opt_32_)
# define dispatch_wordsize(call_64_, call_32_, ...) ((call_32_)(__VA_ARGS__))
# endif
# endif
# ifndef current_klongsize
# define opt_klongsize(opt_64_, opt_32_) \
((current_klongsize > sizeof(uint32_t)) ? (opt_64_) : (opt_32_))
# define dispatch_klongsize(call_64_, call_32_, ...) \
((current_klongsize > sizeof(uint32_t)) \
? (call_64_)(__VA_ARGS__) : (call_32_)(__VA_ARGS__))
# else /* defined current_klongsize */
# if current_klongsize > 4
# define opt_klongsize(opt_64_, opt_32_) (opt_64_)
# define dispatch_klongsize(call_64_, call_32_, ...) ((call_64_)(__VA_ARGS__))
# else /* current_klongsize == 4 */
# define opt_klongsize(opt_64_, opt_32_) (opt_32_)
# define dispatch_klongsize(call_64_, call_32_, ...) ((call_32_)(__VA_ARGS__))
# endif
# endif
typedef struct ioctlent {
const char *symbol;
unsigned int code;
} struct_ioctlent;
# define INJECT_F_SIGNAL 0x01
# define INJECT_F_ERROR 0x02
# define INJECT_F_RETVAL 0x04
# define INJECT_F_DELAY_ENTER 0x08
# define INJECT_F_DELAY_EXIT 0x10
# define INJECT_F_SYSCALL 0x20
# define INJECT_F_POKE_ENTER 0x40
# define INJECT_F_POKE_EXIT 0x80
# define INJECT_ACTION_FLAGS \
(INJECT_F_SIGNAL \
|INJECT_F_ERROR \
|INJECT_F_RETVAL \
|INJECT_F_DELAY_ENTER \
|INJECT_F_DELAY_EXIT \
|INJECT_F_POKE_ENTER \
|INJECT_F_POKE_EXIT \
)
struct inject_data {
uint8_t flags; /* 8 of 8 flags are used */
uint8_t signo; /* NSIG <= 128 */
uint16_t rval_idx; /* index in retval_vec */
uint16_t delay_idx; /* index in delay_data_vec */
uint16_t poke_idx; /* index in poke_vec */
uint16_t scno; /* syscall to be injected instead of -1 */
};
struct inject_opts {
uint16_t first;
uint16_t last;
uint16_t step;
struct inject_data data;
};
# define INJECT_LAST_INF ((uint16_t) -1)
# define MAX_ERRNO_VALUE 4095
/* 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 */
# if SUPPORTED_PERSONALITIES > 1
unsigned int currpers; /* Personality at the time of scno update */
# endif
unsigned long u_error; /* Error code */
kernel_ulong_t scno; /* System call number */
kernel_ulong_t true_scno; /* Same, but without subcall decoding and shuffling */
kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */
kernel_long_t u_rval; /* Return value */
int sys_func_rval; /* Syscall entry parser's return value */
int curcol; /* Output column for this process */
FILE *outf; /* Output file for this process */
struct staged_output_data *staged_output_data;
const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
void *_priv_data; /* Private data for syscall decoding functions */
void (*_free_priv_data)(void *); /* Callback for freeing priv_data */
const struct_sysent *s_ent; /* sysent[scno] or a stub struct for bad
* scno. Use tcp_sysent() macro for access.
*/
const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
struct timespec stime; /* System time usage as of last process wait */
struct timespec ltime; /* System time usage as of last syscall entry */
struct timespec atime; /* System time right after attach */
struct timespec etime; /* Syscall entry time (CLOCK_MONOTONIC) */
struct timespec delay_expiration_time; /* When does the delay end */
/*
* The ID of the PID namespace of this process
* (inode number of /proc/<pid>/ns/pid)
* (0: not initialized)
*/
unsigned int pid_ns;
# ifdef ENABLE_SECONTEXT
int last_dirfd; /* Use AT_FDCWD for 'not set' */
# endif
struct mmap_cache_t *mmap_cache;
/*
* Data that is stored during process wait traversal.
* We use indices as the actual data is stored in an array
* that is realloc'ed at runtime.
*/
size_t wait_data_idx;
/** Wait data storage for a delayed process. */
struct tcb_wait_data *delayed_wait_data;
struct list_item wait_list;
# ifdef HAVE_LINUX_KVM_H
struct vcpu_info *vcpu_info_list;
# endif
# ifdef ENABLE_STACKTRACE
void *unwind_ctx;
struct unwind_queue_t *unwind_queue;
# endif
# define PROC_COMM_LEN 16
char comm[PROC_COMM_LEN];
};
/* 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 in syscall_entering_finish() and cleared in
* syscall_exiting_finish().
* Other stops which are possible directly after syscall entry (death, ptrace
* event stop) are handled without calling syscall_{entering,exiting}_*().
*
* 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_REPRINT 0x10 /* We should reprint this syscall on exit */
# define TCB_FILTERED 0x20 /* This system call has been filtered out */
# define TCB_TAMPERED 0x40 /* A syscall has been tampered with */
# define TCB_HIDE_LOG 0x80 /* We should hide everything (until execve) */
# define TCB_CHECK_EXEC_SYSCALL 0x100 /* Check whether this execve syscall succeeded */
# define TCB_SKIP_DETACH_ON_FIRST_EXEC 0x200 /* -b execve should skip detach on first execve */
# define TCB_GRABBED 0x400 /* We grab the process and can catch it
* in the middle of a syscall */
# define TCB_RECOVERING 0x800 /* We try to recover after detecting incorrect
* syscall entering/exiting state */
# define TCB_INJECT_DELAY_EXIT 0x1000 /* Current syscall needs to be delayed
on exit */
# define TCB_INJECT_POKE_EXIT 0x2000 /* The processes memory should be tampered
with on exit */
# define TCB_DELAYED 0x4000 /* Current syscall is to be delayed */
# define TCB_TAMPERED_DELAYED 0x8000 /* Current syscall has been delayed */
# define TCB_TAMPERED_POKED 0x10000 /* Current syscall has been poked */
# define TCB_TAMPERED_NO_FAIL 0x20000 /* We tamper tcb with syscall
that should not fail. */
# define TCB_SECCOMP_FILTER 0x40000 /* This process has a seccomp filter
* attached.
*/
/* 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_INJECT 0x010 /* tamper with this system call on purpose */
# 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 traced(tcp) ((tcp)->qual_flg & QUAL_TRACE)
# define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
# define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
# define raw(tcp) ((tcp)->qual_flg & QUAL_RAW)
# define inject(tcp) ((tcp)->qual_flg & QUAL_INJECT)
# define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
# define hide_log(tcp) ((tcp)->flags & TCB_HIDE_LOG)
# define check_exec_syscall(tcp) ((tcp)->flags & TCB_CHECK_EXEC_SYSCALL)
# define syscall_tampered(tcp) ((tcp)->flags & TCB_TAMPERED)
# define recovering(tcp) ((tcp)->flags & TCB_RECOVERING)
# define inject_delay_exit(tcp) ((tcp)->flags & TCB_INJECT_DELAY_EXIT)
# define inject_poke_exit(tcp) ((tcp)->flags & TCB_INJECT_POKE_EXIT)
# define syscall_delayed(tcp) ((tcp)->flags & TCB_DELAYED)
# define syscall_tampered_delayed(tcp) ((tcp)->flags & TCB_TAMPERED_DELAYED)
# define syscall_tampered_poked(tcp) ((tcp)->flags & TCB_TAMPERED_POKED)
# define syscall_tampered_nofail(tcp) ((tcp)->flags & TCB_TAMPERED_NO_FAIL)
# define has_seccomp_filter(tcp) ((tcp)->flags & TCB_SECCOMP_FILTER)
extern const struct_sysent stub_sysent;
# define tcp_sysent(tcp) (tcp->s_ent ?: &stub_sysent)
# define n_args(tcp) (tcp_sysent(tcp)->nargs)
# include "xlat.h"
extern const struct xlat addrfams[];
extern const struct xlat arp_hardware_types[];
extern const struct xlat at_flags[];
extern const struct xlat clocknames[];
extern const struct xlat dirent_types[];
extern const struct xlat ethernet_protocols[];
extern const struct xlat inet_protocols[];
extern const struct xlat evdev_abs[];
extern const struct xlat audit_arch[];
extern const struct xlat evdev_ev[];
extern const struct xlat iffflags[];
extern const struct xlat ip_type_of_services[];
extern const struct xlat ipc_private[];
extern const struct xlat msg_flags[];
extern const struct xlat netlink_protocols[];
extern const struct xlat nl_bridge_vlan_flags[];
extern const struct xlat nl_netfilter_msg_types[];
extern const struct xlat nl_route_types[];
extern const struct xlat open_access_modes[];
extern const struct xlat open_mode_flags[];
extern const struct xlat pollflags[];
extern const struct xlat ptrace_cmds[];
extern const struct xlat resource_flags[];
extern const struct xlat route_nexthop_flags[];
extern const struct xlat routing_protocols[];
extern const struct xlat routing_scopes[];
extern const struct xlat routing_table_ids[];
extern const struct xlat routing_types[];
extern const struct xlat rwf_flags[];
extern const struct xlat seccomp_filter_flags[];
extern const struct xlat seccomp_ret_action[];
extern const struct xlat setns_types[];
extern const struct xlat sg_io_info[];
extern const struct xlat socketlayers[];
extern const struct xlat socktypes[];
extern const struct xlat tcp_state_flags[];
extern const struct xlat tcp_states[];
extern const struct xlat whence_codes[];
/* Format of syscall return values */
# define RVAL_UDECIMAL 000 /* unsigned decimal format */
# define RVAL_HEX 001 /* hex format */
# define RVAL_OCTAL 002 /* octal format */
# define RVAL_FD 010 /* file descriptor */
# define RVAL_TID 011 /* task ID */
# define RVAL_SID 012 /* session ID */
# define RVAL_TGID 013 /* thread group ID */
# define RVAL_PGID 014 /* process group ID */
# 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 RVAL_DECODED 0100 /* syscall decoding finished */
# define RVAL_IOCTL_DECODED 0200 /* ioctl sub-parser successfully decoded
the argument */
# define IOCTL_NUMBER_UNKNOWN 0
# define IOCTL_NUMBER_HANDLED 1
# define IOCTL_NUMBER_STOP_LOOKUP 010
# define indirect_ipccall(tcp) (tcp_sysent(tcp)->sys_flags & TRACE_INDIRECT_SUBCALL)
enum pid_type {
PT_TID,
PT_TGID,
PT_PGID,
PT_SID,
PT_COUNT,
PT_NONE = -1
};
enum sock_proto {
SOCK_PROTO_UNKNOWN,
SOCK_PROTO_UNIX,
SOCK_PROTO_UNIX_STREAM,
SOCK_PROTO_TCP,
SOCK_PROTO_UDP,
SOCK_PROTO_UDPLITE,
SOCK_PROTO_DCCP,
SOCK_PROTO_SCTP,
SOCK_PROTO_L2TP_IP,
SOCK_PROTO_PING,
SOCK_PROTO_RAW,
SOCK_PROTO_TCPv6,
SOCK_PROTO_UDPv6,
SOCK_PROTO_UDPLITEv6,
SOCK_PROTO_DCCPv6,
SOCK_PROTO_L2TP_IPv6,
SOCK_PROTO_SCTPv6,
SOCK_PROTO_PINGv6,
SOCK_PROTO_RAWv6,
SOCK_PROTO_NETLINK,
};
extern enum sock_proto get_proto_by_name(const char *);
extern int get_family_by_proto(enum sock_proto proto);
typedef enum {
CFLAG_NONE = 0,
CFLAG_ONLY_STATS,
CFLAG_BOTH
} cflag_t;
extern cflag_t cflag;
extern bool Tflag;
extern int Tflag_scale;
extern int Tflag_width;
extern bool iflag;
extern bool count_wallclock;
/* are we filtering traces based on paths? */
extern struct path_set {
const char **paths_selected;
size_t num_selected;
size_t size;
} global_path_set;
# define tracing_paths (global_path_set.num_selected != 0)
enum xflag_opts {
HEXSTR_NONE,
HEXSTR_NON_ASCII,
HEXSTR_ALL,
/*
* It is here (after HEXSTR_ALL and not before HEXSTR_NON_ASCII) because
* none/non-ascii/all are historic options values that are supported
* via -x option.
*/
HEXSTR_NON_ASCII_CHARS,
NUM_HEXSTR_OPTS
};
extern unsigned xflag;
extern bool followfork;
extern bool output_separately;
# ifdef ENABLE_STACKTRACE
/* if this is true do the stack trace for every system call */
extern bool stack_trace_enabled;
# else
# define stack_trace_enabled 0
# 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))
extern int read_int_from_file(const char *, int *);
extern void set_sortby(const char *);
extern int set_overhead(const char *);
extern void set_count_summary_columns(const char *columns);
extern bool get_instruction_pointer(struct tcb *, kernel_ulong_t *);
extern bool get_stack_pointer(struct tcb *, kernel_ulong_t *);
extern void print_instruction_pointer(struct tcb *);
extern void print_syscall_number(struct tcb *);
extern void print_syscall_resume(struct tcb *tcp);
extern int syscall_entering_decode(struct tcb *);
extern int syscall_entering_trace(struct tcb *, unsigned int *);
extern void syscall_entering_finish(struct tcb *, int);
extern int syscall_exiting_decode(struct tcb *, struct timespec *);
extern int syscall_exiting_trace(struct tcb *, struct timespec *, int);
extern void syscall_exiting_finish(struct tcb *);
extern void count_syscall(struct tcb *, const struct timespec *);
extern void call_summary(FILE *);
extern void clear_regs(struct tcb *tcp);
extern int get_scno(struct tcb *);
extern kernel_ulong_t get_rt_sigframe_addr(struct tcb *);
/**
* Convert a (shuffled) syscall number to the corresponding syscall name.
*
* @param scno Syscall number.
* @return String literal corresponding to the syscall number in case latter
* is valid; NULL otherwise.
*/
extern const char *syscall_name(kernel_ulong_t scno);
/**
* Convert a pair of (raw) syscall number and arch (defined by an AUDIT_ARCH_*
* constant) to the corresponding syscall name. So far works only for arches
* that are present in personalities supported by strace binary.
*
* @param nr Raw syscall number.
* @param arch AUDIT_ARCH_* constant that identifies the architecture.
* @param prefix If arch corresponds to current personality (and the argument
* is non-NULL), an appropriate __NR_* constant prefix
* is to be stored at the address pointed by the argument.
* If arch corresponds to a different personality, or syscall
* name has not been found, NULL is stored.
* @return String literal corresponding to the syscall number in case
* the latter is valid; NULL otherwise.
*/
extern const char *syscall_name_arch(kernel_ulong_t nr, unsigned int arch,
const char **prefix);
/**
* Convert a syscall name to the corresponding (shuffled) syscall number.
*
* @param s Syscall name.
* @param p Personality.
* @param start From which position in syscall entry table resume the search.
* @return Shuffled syscall number (ready to use against sysent_vec)
* if syscall name is found; -1 otherwise.
*/
extern kernel_long_t scno_by_name(const char *s, unsigned p,
kernel_long_t start);
/**
* Shuffle syscall numbers so that we don't have huge gaps in syscall table.
* The shuffling should be an involution: shuffle_scno(shuffle_scno(n)) == n.
*
* @param scno Raw or shuffled syscall number.
* @param pers Personality to shuffle scno for.
* @return Shuffled or raw syscall number, respectively.
*/
extern kernel_ulong_t shuffle_scno_pers(kernel_ulong_t scno, int pers);
/**
* Shorthand for shuffle_scno_pers() for the current personality.
*
* @param scno Raw or shuffled syscall number.
* @return Shuffled or raw syscall number, respectively.
*/
static inline kernel_ulong_t
shuffle_scno(kernel_ulong_t scno)
{
return shuffle_scno_pers(scno, current_personality);
}
/**
* Print error name in accordance with current xlat style setting.
*
* @param err Error value.
* @param negated If set to true, negative values of the err parameter indicate
* error condition, otherwise positive.
*/
extern void print_err(int64_t err, bool negated);
extern bool is_erestart(struct tcb *);
extern void temporarily_clear_syserror(struct tcb *);
extern void restore_cleared_syserror(struct tcb *);
extern void *get_tcb_priv_data(const struct tcb *);
extern int set_tcb_priv_data(struct tcb *, void *priv_data,
void (*free_priv_data)(void *));
extern void free_tcb_priv_data(struct tcb *);
static inline unsigned long get_tcb_priv_ulong(const struct tcb *tcp)
{
return (unsigned long) get_tcb_priv_data(tcp);
}
static inline int set_tcb_priv_ulong(struct tcb *tcp, unsigned long val)
{
return set_tcb_priv_data(tcp, (void *) val, 0);
}
/**
* @return 0 on success, -1 on error.
*/
extern int
umoven(struct tcb *, kernel_ulong_t addr, unsigned int len, void *laddr);
# define umove(pid, addr, objp) \
umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
/**
* @return the number of bytes written.
*/
extern unsigned int
upoken(struct tcb *, kernel_ulong_t addr, unsigned int len, void *laddr);
/**
* @return true on success, false on error.
*/
extern bool
tfetch_mem64(struct tcb *, uint64_t addr, unsigned int len, void *laddr);
static inline bool
tfetch_mem(struct tcb *tcp, const kernel_ulong_t addr,
unsigned int len, void *laddr)
{
return tfetch_mem64(tcp, addr, len, laddr);
}
# define tfetch_obj(pid, addr, objp) \
tfetch_mem((pid), (addr), sizeof(*(objp)), (void *) (objp))
/**
* @return true on success, false on error.
*/
extern bool
tfetch_mem64_ignore_syserror(struct tcb *, uint64_t addr,
unsigned int len, void *laddr);
static inline bool
tfetch_mem_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
unsigned int len, void *laddr)
{
return tfetch_mem64_ignore_syserror(tcp, addr, len, laddr);
}
/**
* @return 0 on success, -1 on error (and print addr).
*/
extern int
umoven_or_printaddr64(struct tcb *, uint64_t addr,
unsigned int len, void *laddr);
# define umove_or_printaddr64(pid, addr, objp) \
umoven_or_printaddr64((pid), (addr), sizeof(*(objp)), (void *) (objp))
static inline int
umoven_or_printaddr(struct tcb *tcp, const kernel_ulong_t addr,
unsigned int len, void *laddr)
{
return umoven_or_printaddr64(tcp, addr, len, laddr);
}
# define umove_or_printaddr(pid, addr, objp) \
umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
/**
* Retrieves up to 8 bytes (that are treated as a single unsigned integer value)
* and puts it into variable pointed by laddr;
*
* @return 0 on success, -1 (and print addr) on error or if len is more
* than size of uint64_t.
*/
extern int
umoven_to_uint64_or_printaddr64(struct tcb *, uint64_t addr,
unsigned int len, uint64_t *laddr);
static inline int
umoven_to_uint64_or_printaddr(struct tcb *tcp, const kernel_ulong_t addr,
unsigned int len, uint64_t *laddr)
{
return umoven_to_uint64_or_printaddr64(tcp, addr, len, laddr);
}
/**
* @return 0 on success, -1 on error (and print addr).
*/
extern int
umoven_or_printaddr64_ignore_syserror(struct tcb *, uint64_t addr,
unsigned int len, void *laddr);
# define umove_or_printaddr64_ignore_syserror(pid, addr, objp) \
umoven_or_printaddr64_ignore_syserror((pid), (addr), sizeof(*(objp)), \
(void *) (objp))
static inline int
umoven_or_printaddr_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
unsigned int len, void *laddr)
{
return umoven_or_printaddr64_ignore_syserror(tcp, addr, len, laddr);
}
# define umove_or_printaddr_ignore_syserror(pid, addr, objp) \
umoven_or_printaddr_ignore_syserror((pid), (addr), sizeof(*(objp)), \
(void *) (objp))
/**
* @return strlen + 1 on success, 0 on success and no NUL seen, -1 on error.
*/
extern int
umovestr(struct tcb *, kernel_ulong_t addr, unsigned int len, char *laddr);
/* Invalidate the cache used by umove* functions. */
extern void invalidate_umove_cache(void);
extern int upeek(struct tcb *tcp, unsigned long, kernel_ulong_t *);
extern int upoke(struct tcb *tcp, unsigned long, kernel_ulong_t);
# if HAVE_ARCH_GETRVAL2
extern long getrval2(struct tcb *);
# endif
extern const char *signame(const int);
extern const char *sprintsigname(const int);
extern void pathtrace_select_set(const char *, struct path_set *);
extern bool pathtrace_match_set(struct tcb *, struct path_set *);
static inline void
pathtrace_select(const char *path)
{
return pathtrace_select_set(path, &global_path_set);
}
static inline bool
pathtrace_match(struct tcb *tcp)
{
return pathtrace_match_set(tcp, &global_path_set);
}
extern int getfdpath_pid(pid_t pid, int fd, char *buf, unsigned bufsize);
static inline int
getfdpath(struct tcb *tcp, int fd, char *buf, unsigned bufsize)
{
return getfdpath_pid(tcp->pid, fd, buf, bufsize);
}
extern unsigned long getfdinode(struct tcb *, int);
extern enum sock_proto getfdproto(struct tcb *, int);
extern const char *xlookup(const struct xlat *, const uint64_t);
extern const char *xlookup_le(const struct xlat *, uint64_t *);
struct dyxlat;
struct dyxlat *dyxlat_alloc(size_t nmemb);
void dyxlat_free(struct dyxlat *);
const struct xlat *dyxlat_get(const struct dyxlat *);
void dyxlat_add_pair(struct dyxlat *, uint64_t val, const char *str, size_t len);
const struct xlat *genl_families_xlat(struct tcb *tcp);
extern unsigned long get_pagesize(void);
extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
/*
* Returns STR if it does not start with PREFIX,
* or a pointer to the first char in STR after PREFIX.
* The length of PREFIX is specified by PREFIX_LEN.
*/
static inline const char *
str_strip_prefix_len(const char *str, const char *prefix, size_t prefix_len)
{
return strncmp(str, prefix, prefix_len) ? str : str + prefix_len;
}
# define STR_STRIP_PREFIX(str, prefix) \
str_strip_prefix_len((str), (prefix), sizeof(prefix) - 1)
/** String is '\0'-terminated. */
# define QUOTE_0_TERMINATED 0x01
/** Do not emit leading and ending '"' characters. */
# define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
/** Do not print '\0' if it is the last character. */
# define QUOTE_OMIT_TRAILING_0 0x08
/** Print ellipsis if the last character is not '\0' */
# define QUOTE_EXPECT_TRAILING_0 0x10
/** Print string in hex (using '\xHH' notation). */
# define QUOTE_FORCE_HEX 0x20
/** Enclose the string in C comment syntax. */
# define QUOTE_EMIT_COMMENT 0x40
extern int string_quote(const char *, char *, unsigned int, unsigned int,
const char *escape_chars);
extern int print_quoted_string_ex(const char *, unsigned int, unsigned int,
const char *escape_chars);
extern int print_quoted_string(const char *, unsigned int, unsigned int);
extern int print_quoted_cstring(const char *, unsigned int);
/* a refers to the lower numbered u_arg,
* b refers to the higher numbered u_arg
*/
# ifdef WORDS_BIGENDIAN
# define ULONG_LONG(a, b) \
((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))
# else
# define ULONG_LONG(a, b) \
((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))
# endif
extern unsigned int getllval(struct tcb *, unsigned long long *, unsigned int);
extern unsigned int print_arg_lld(struct tcb *, unsigned int);
extern unsigned int print_arg_llu(struct tcb *, unsigned int);
extern void printaddr64(uint64_t addr);
static inline void
printaddr(const kernel_ulong_t addr)
{
printaddr64(addr);
}
# define xlat_verbose(style_) ((style_) & XLAT_STYLE_VERBOSITY_MASK)
# define xlat_format(style_) ((style_) & XLAT_STYLE_FORMAT_MASK)
extern enum xlat_style xlat_verbosity;
extern int printxvals_ex(uint64_t val, const char *dflt,
enum xlat_style, const struct xlat *, ...)
ATTRIBUTE_SENTINEL;
# define printxvals(val_, dflt_, ...) \
printxvals_ex((val_), (dflt_), XLAT_STYLE_DEFAULT, __VA_ARGS__)
# define printxval_ex(xlat_, val_, dflt_, style_) \
printxvals_ex((val_), (dflt_), (style_), (xlat_), NULL)
extern int sprintxval_ex(char *buf, size_t size, const struct xlat *,
unsigned int val, const char *dflt, enum xlat_style);
static inline int
sprintxval(char *buf, size_t size, const struct xlat *xlat, unsigned int val,
const char *dflt)
{
return sprintxval_ex(buf, size, xlat, val, dflt, XLAT_STYLE_DEFAULT);
}
enum xlat_style_private_flag_bits {
/* print_array */
PAF_PRINT_INDICES_BIT = XLAT_STYLE_SPEC_BITS + 1,
PAF_ARRAY_TRUNCATED_BIT,
/* print_xlat */
PXF_DEFAULT_STR_BIT,
/* sprintflags_ex */
SPFF_AUXSTR_MODE_BIT,
};
enum xlat_style_private_flags {
/* print_array */
FLAG(PAF_PRINT_INDICES),
FLAG(PAF_ARRAY_TRUNCATED),
/* print_xlat */
FLAG(PXF_DEFAULT_STR),
/* sprintflags_ex */
FLAG(SPFF_AUXSTR_MODE),
};
/**
* Print a value in accordance with xlat formatting settings.
*
* @param val Value itself.
* @param str String representation of the value. Semantics may be affected
* by style argument;
* @param style Combination of flags from enum xlat_style and PXF_* flags
* from enum xlat_style_private_flags:
* - PXF_DEFAULT_STR - interpret str argument as default
* (fallback) string and not as string representation of val.
*/
extern void print_xlat_ex(uint64_t val, const char *str, uint32_t style);
# define print_xlat(val_) \
print_xlat_ex((val_), #val_, XLAT_STYLE_DEFAULT)
# define print_xlat32(val_) \
print_xlat_ex((uint32_t) (val_), #val_, XLAT_STYLE_DEFAULT)
# define print_xlat_u(val_) \
print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_U)
# define print_xlat_d(val_) \
print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_D)
extern int printargs(struct tcb *);
extern int printargs_u(struct tcb *);
extern int printargs_d(struct tcb *);
extern int printflags_ex(uint64_t flags, const char *dflt,
enum xlat_style, const struct xlat *, ...)
ATTRIBUTE_SENTINEL;
extern const char *sprintflags_ex(const char *prefix, const struct xlat *,
uint64_t flags, char sep, enum xlat_style);
static inline const char *
sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
{
return sprintflags_ex(prefix, xlat, flags, '\0', XLAT_STYLE_DEFAULT);
}
extern const char *sprinttime(long long sec);
extern const char *sprinttime_nsec(long long sec, unsigned long long nsec);
extern const char *sprinttime_usec(long long sec, unsigned long long usec);
# ifndef MAX_ADDR_LEN
# define MAX_ADDR_LEN 32
# endif
extern const char *sprint_mac_addr(const uint8_t addr[], size_t size);
extern void print_mac_addr(const char *prefix,
const uint8_t addr[], size_t size);
extern const char *sprint_hwaddr(const uint8_t addr[], size_t size,
uint32_t devtype);
extern void print_hwaddr(const char *prefix,
const uint8_t addr[], size_t size, uint32_t devtype);
extern void print_uuid(const unsigned char *uuid);
extern void print_symbolic_mode_t(unsigned int);
extern void print_numeric_umode_t(unsigned short);
extern void print_numeric_ll_umode_t(unsigned long long);
extern void print_dev_t(unsigned long long dev);
extern void print_kernel_version(unsigned long version);
extern void print_abnormal_hi(kernel_ulong_t);
extern void print_ioprio(unsigned int ioprio);
extern bool print_int_array_member(struct tcb *, void *elem_buf,
size_t elem_size, void *data);
extern bool print_uint_array_member(struct tcb *, void *elem_buf,
size_t elem_size, void *data);
extern bool print_xint_array_member(struct tcb *, void *elem_buf,
size_t elem_size, void *data);
extern bool print_fd_array_member(struct tcb *, void *elem_buf,
size_t elem_size, void *data);
typedef bool (*tfetch_mem_fn)(struct tcb *, kernel_ulong_t addr,
unsigned int size, void *dest);
typedef bool (*print_fn)(struct tcb *, void *elem_buf,
size_t elem_size, void *opaque_data);
typedef int (*print_obj_by_addr_fn)(struct tcb *, kernel_ulong_t);
typedef const char * (*sprint_obj_by_addr_fn)(struct tcb *, kernel_ulong_t);
typedef void (*print_obj_by_addr_size_fn)(struct tcb *,
kernel_ulong_t addr,
kernel_ulong_t size,
void *opaque_data);
/**
* Array printing function with an over-engineered interface.
*
* @param start_addr If tfetch_mem_fn is non-NULL: an address in tracee's
* memory where the start of the array is located.
* If tfetch_mem_fn is NULL: ignored.
* @param nmemb Number of elements in the array.
* @param elem_buf If tfetch_mem_fn is non-NULL: a buffer where each
* element fetched by tfetch_mem_fn is stored.
* If tfetch_mem_fn is NULL: an address of the start
* of the array in strace's memory.
* @param elem_size Size (in bytes) of the each element in the array.
* @param tfetch_mem_fn Fetching function. If it is NULL, then elem_buf
* is treated as a local array of nmemb members
* of elem_size each, and start_addr is ignored.
* @param print_func Element printing callback.
* @param opaque_data A value that is unconditionally passed to print_func
* in the opaque_data argument.
* @param flags Combination of xlat style settings and additional
* flags from enum print_array_flags that are appled
* to index printing.
* @param index_xlat xlat that is used for printing indices.
* @param index_dflt Default string for the values not found
* in index_xlat.
* @return true if at least one element has been fetched
* successfully (tfetch_mem_fn returned true);
* false otherwise.
*/
extern bool
print_array_ex(struct tcb *,
kernel_ulong_t start_addr,
size_t nmemb,
void *elem_buf,
size_t elem_size,
tfetch_mem_fn tfetch_mem_func,
print_fn print_func,
void *opaque_data,
unsigned int flags,
const struct xlat *index_xlat,
const char *index_dflt);
/** Print an array from tracee's memory without any index printing features. */
static inline bool
print_array(struct tcb *const tcp,
const kernel_ulong_t start_addr,
const size_t nmemb,
void *const elem_buf,
const size_t elem_size,
tfetch_mem_fn tfetch_mem_func,
print_fn print_func,
void *const opaque_data)
{
return print_array_ex(tcp, start_addr, nmemb, elem_buf, elem_size,
tfetch_mem_func, print_func, opaque_data,
0, NULL, NULL);
}
/** Shorthand for printing local arrays. */
static inline bool
print_local_array_ex(struct tcb *tcp,
const void *start_addr,
const size_t nmemb,
const size_t elem_size,
print_fn print_func,
void *const opaque_data,
unsigned int flags,
const struct xlat *index_xlat,
const char *index_dflt)
{
return print_array_ex(tcp, (uintptr_t) start_addr, nmemb,
NULL, elem_size, NULL, print_func,
opaque_data, flags, index_xlat, index_dflt);
}
/** Shorthand for a shorthand for printing local arrays. */
# define print_local_array(tcp_, start_addr_, print_func_) \
print_local_array_ex((tcp_), (start_addr_), ARRAY_SIZE(start_addr_), \
sizeof((start_addr_)[0]), (print_func_), \
NULL, 0, NULL, NULL)
# define print_local_array_upto(tcp_, start_addr_, upto_, print_func_) \
print_local_array_ex((tcp_), (start_addr_), \
CLAMP((upto_), 0, \
(typeof(upto_)) ARRAY_SIZE(start_addr_)), \
sizeof((start_addr_)[0]), (print_func_), \
NULL, 0, NULL, NULL)
extern kernel_ulong_t *
fetch_indirect_syscall_args(struct tcb *, kernel_ulong_t addr, unsigned int n_args);
extern void pidns_init(void);
/**
* Returns PID as present in /proc of the tracer (can be different from tracee
* PID if /proc and the tracer process are in different PID namespaces).
*/
extern int get_proc_pid(int pid);
/**
* Translates a pid from tracee's namespace to our namespace.
*
* @param tcp The tcb of the tracee
* (NULL: from_id is in strace's namespace. Useful for
* getting the proc PID of from_id)
* @param from_id The id to be translated
* @param type The PID type of from_id
* @param proc_pid_ptr If not NULL, writes the proc PID to this location
* @return The translated id, or 0 if translation fails.
*/
extern int translate_pid(struct tcb *, int dest_id, enum pid_type type,
int *proc_pid_ptr);
extern void
dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
extern void
dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
extern void
dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
extern void
dumpstr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
extern int
printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
unsigned int user_style);
/**
* Print a region of tracee memory only in case non-zero bytes are present
* there. It almost fits into printstr_ex, but it has some pretty specific
* behaviour peculiarities (like printing of ellipsis on error) to readily
* integrate it there.
*
* Since it is expected to be used for printing tail of a structure in tracee's
* memory, it accepts a combination of start_addr/start_offs/total_len and does
* the relevant calculations itself.
*
* @param prefix_fun A function called before something is going to be printed.
* @param start_addr Address of the beginning of a structure (whose tail
* is supposedly to be printed) in tracee's memory.
* @param start_offs Offset from the beginning of the structure where the tail
* data starts.
* @param total_len Total size of the tracee's memory region containing
* the structure and the tail data.
* Caller is responsible for imposing a sensible (usually
* mandated by the kernel interface, like get_pagesize())
* limit here.
* @param style Passed to string_quote as "style" parameter.
* @return Returns true is anything was printed, false otherwise.
*/
extern bool print_nonzero_bytes(struct tcb *const tcp,
void (*prefix_fun)(void),
const kernel_ulong_t start_addr,
const unsigned int start_offs,
const unsigned int total_len,
const unsigned int style);
extern int
printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
extern int
printpath(struct tcb *, kernel_ulong_t addr);
# define TIMESPEC_TEXT_BUFSIZE \
(sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}"))
/**
* Returns the pid associated with pidfd of the process with ID pid_of_fd
*/
extern pid_t pidfd_get_pid(pid_t pid_of_fd, int fd);
/**
* Print file descriptor fd owned by process with ID pid (from the PID NS
* of the tracer).
*/
extern void printfd_pid(struct tcb *tcp, pid_t pid, int fd);
static inline void
printfd(struct tcb *tcp, int fd)
{
printfd_pid(tcp, tcp->pid, fd);
}
/**
* Helper function, converts pid to string, or to "self" for pid == 0.
* Uses static buffer for operation.
*/
extern const char *pid_to_str(pid_t pid);
/**
* Get list of IDs present in a proc status record. IDs are placed in the array
* in the order they are stored in /proc.
*
* @param proc_pid PID (as present in /proc) to get information for.
* @param id_buf Pointer to buffer where parsed IDs are stored.
* Can be NULL.
* @param id_buf_size Number of items id_buf can store. If there are more IDs
* than id_buf can store, the excess IDs are not stored
* but still counted.
* @param str (Prefix) string IDs from which are to be read.
* @param str_size Size of the prefix string. Can be 0, in this case str
* has to be '\0'-terminated in order to be able to obtain
* its length.
* @return Number of items read (even if they are not written).
* 0 indicates error.
*/
extern size_t proc_status_get_id_list(int proc_pid,
int *id_buf, size_t id_buf_size,
const char *str, size_t str_size);
/**
* Print file descriptor fd owned by process with ID pid (from the PID NS
* of the tracee).
*/
extern void printfd_pid_tracee_ns(struct tcb *tcp, pid_t pid, int fd);
/** Prints a PID specified in the tracee's PID namespace */
extern void printpid(struct tcb *, int pid, enum pid_type type);
/**
* Prints pid as a TGID if positive, and PGID if negative
* (like the first argument of kill).
*/
extern void printpid_tgid_pgid(struct tcb *, int pid);
extern void print_sockaddr(struct tcb *, const void *sa, int len);
extern bool
print_inet_addr(int af, const void *addr, unsigned int len, const char *var_name);
extern bool
decode_inet_addr(struct tcb *, kernel_ulong_t addr,
unsigned int len, int family, const char *var_name);
extern void print_ax25_addr(const void /* ax25_address */ *addr);
extern void print_x25_addr(const void /* struct x25_address */ *addr);
extern const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
/**
* Prints dirfd file descriptor and saves it in tcp->last_dirfd,
* the latter is used when printing SELinux contexts.
*/
extern void print_dirfd(struct tcb *, int);
extern int
decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
extern void printuid(const unsigned int);
extern void
print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
extern void
print_sigset_addr(struct tcb *, kernel_ulong_t addr);
extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
extern void printsignal(int);
extern void
tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
kernel_ulong_t data_size, print_obj_by_addr_size_fn,
void *opaque_data);
extern void
iov_decode_addr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size,
void *opaque_data);
extern void
iov_decode_str(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size,
void *opaque_data);
extern void
decode_netlink(struct tcb *, int fd, kernel_ulong_t addr, kernel_ulong_t len);
extern void tprint_open_modes(unsigned int);
extern const char *sprint_open_modes(unsigned int);
extern void
decode_seccomp_fprog(struct tcb *, kernel_ulong_t addr);
extern void
print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
extern void
decode_sock_fprog(struct tcb *, kernel_ulong_t addr);
extern void
print_sock_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
struct strace_stat;
extern void print_struct_stat(struct tcb *, const struct strace_stat *const st);
struct strace_statfs;
struct strace_keyctl_kdf_params;
extern void
print_struct_statfs(struct tcb *, kernel_ulong_t addr);
extern void
print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
extern int
fetch_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
extern void
print_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
extern const char *get_ifname(const unsigned int ifindex);
extern void print_ifindex(unsigned int);
extern void print_bpf_filter_code(const uint16_t code, bool extended);
/**
* Prints a CPU set, pointed at by addr, as a list of CPU IDs. CPU set
* (CPU mask, CPU affinity set, CPU affinity list) is a bit set represented
* as an array of elements of unsigned long type.
*
* @param tcp TCB pointer.
* @param addr An address of the CPU set.
* @param len Length of CPU set in bytes.
*/
extern void print_affinitylist(struct tcb *const tcp, const kernel_ulong_t addr,
const unsigned int len);
extern void qualify(const char *);
extern void qualify_trace(const char *);
extern void qualify_abbrev(const char *);
extern void qualify_verbose(const char *);
extern void qualify_raw(const char *);
extern void qualify_signals(const char *);
extern void qualify_status(const char *);
extern void qualify_quiet(const char *);
extern void qualify_decode_fd(const char *);
extern void qualify_decode_pid(const char *);
extern void qualify_read(const char *);
extern void qualify_write(const char *);
extern void qualify_fault(const char *);
extern void qualify_inject(const char *);
extern void qualify_kvm(const char *);
extern unsigned int qual_flags(const unsigned int);
# define DECL_IOCTL(name) \
extern int \
name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg) \
/* End of DECL_IOCTL definition. */
DECL_IOCTL(dm);
DECL_IOCTL(evdev);
DECL_IOCTL(fs_0x94);
DECL_IOCTL(fs_f);
DECL_IOCTL(fs_x);
DECL_IOCTL(gpio);
DECL_IOCTL(inotify);
DECL_IOCTL(kd);
DECL_IOCTL(kvm);
DECL_IOCTL(nbd);
DECL_IOCTL(nsfs);
DECL_IOCTL(ptp);
DECL_IOCTL(random);
DECL_IOCTL(seccomp);
DECL_IOCTL(scsi);
DECL_IOCTL(tee);
DECL_IOCTL(term);
DECL_IOCTL(ubi);
DECL_IOCTL(uffdio);
DECL_IOCTL(watchdog);
# undef DECL_IOCTL
extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
extern void print_evdev_ff_type(const kernel_ulong_t val);
struct nlmsghdr;
typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *,
kernel_ulong_t addr, unsigned int len);
# define DECL_NETLINK(name) \
extern bool \
decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
kernel_ulong_t addr, unsigned int len) \
/* End of DECL_NETLINK definition. */
DECL_NETLINK(crypto);
DECL_NETLINK(netfilter);
DECL_NETLINK(route);
DECL_NETLINK(selinux);
DECL_NETLINK(sock_diag);
extern void
decode_netlink_kobject_uevent(struct tcb *, kernel_ulong_t addr,
kernel_ulong_t len);
enum find_xlat_flag_bits {
FXL_CASE_SENSITIVE_BIT,
};
enum find_xlat_flags {
/** Whether to use strcmp instead of strcasecmp for comparison */
FLAG(FXL_CASE_SENSITIVE),
};
/**
* Searches for a string-value pair in the provided array of pairs.
*
* @param items Array of string-value pairs to search in.
* @param s String to search for.
* @param num_items Item count in items array.
* @param flags Bitwise-or'ed flags from enum find_xlat_flags.
* @return Pointer to the first matching string-value pair inside items
* or NULL if nothing has been found.
*/
extern const struct xlat_data *find_xlat_val_ex(const struct xlat_data *items,
const char *s, size_t num_items,
unsigned int flags);
# define find_xlat_val(items_, s_) \
find_xlat_val_ex((items_), (s_), ARRAY_SIZE(items_), 0)
# define find_xlat_val_case(items_, s_) \
find_xlat_val_ex((items_), (s_), ARRAY_SIZE(items_), FXL_CASE_SENSITIVE)
/**
* A find_xlat_val_ex wrapper for option arguments parsing. Provides a value
* from strs array that matched the supplied arg string. If arg is NULL,
* default_val is returned. If nothing has matched, not_found value
* is returned.
*
* find_arg_val provides a wrapper for the common case of statically-defined
* strs arrays.
*
* @param arg Argument string to parse
* @param strs Array of string-value pairs to match arg against.
* @param strs_size Element count in the strs array.
* @param default_val Value to return if arg is NULL.
* @param not_found Value to return if arg hasn't found among strs.
* @return default_val is arg is NULL, value part of the matched
* string-value pair, or not_found if nothing has matched.
*/
extern uint64_t find_arg_val_(const char *arg, const struct xlat_data *strs,
size_t strs_size, uint64_t default_val,
uint64_t not_found);
/** A find_arg_val_ wrapper that supplies strs_size to it using ARRAY_SIZE. */
# define find_arg_val(arg_, strs_, dflt_, not_found_) \
find_arg_val_((arg_), (strs_), ARRAY_SIZE(strs_), (dflt_), (not_found_))
/**
* A find_arg_val wrapper for parsing time scale names.
*
* @param arg String to parse
* @param empty_dflt Default scale for the empty arg.
* @param null_dflt Default scale for the NULL arg.
* @param width Width of the field required to print the second part
* with the specified precision.
* @return Time scale (amount of nanoseconds) if found,
* empty_dflt if arg is empty, null_dflt if arg is NULL,
* -1 if arg doesn't match any known time scale.
*/
extern int str2timescale_ex(const char *arg, int empty_dflt, int null_dflt,
int *width);
/** str2timescale_ex wrapper for handling a separate argument. */
# define str2timescale_optarg(arg_, w_) str2timescale_ex((arg_), -1, 1000, (w_))
/** str2timescale_ex wrapper for handling a suffix in existing argument. */
# define str2timescale_sfx(arg_, w_) str2timescale_ex((arg_), 1000, -1, (w_))
extern int ts_nz(const struct timespec *);
extern int ts_cmp(const struct timespec *, const struct timespec *);
extern double ts_float(const struct timespec *);
extern void ts_add(struct timespec *, const struct timespec *, const struct timespec *);
extern void ts_sub(struct timespec *, const struct timespec *, const struct timespec *);
extern void ts_mul(struct timespec *, const struct timespec *, uint64_t);
extern void ts_div(struct timespec *, const struct timespec *, uint64_t);
extern const struct timespec *ts_min(const struct timespec *, const struct timespec *);
extern const struct timespec *ts_max(const struct timespec *, const struct timespec *);
extern int parse_ts(const char *s, struct timespec *t);
/** Print a clock_t value, as used by times(2) (and not clock(3)). */
extern void print_clock_t(uint64_t val);
# ifdef ENABLE_STACKTRACE
extern void unwind_init(void);
extern void unwind_tcb_init(struct tcb *);
extern void unwind_tcb_fin(struct tcb *);
extern void unwind_tcb_print(struct tcb *);
extern void unwind_tcb_capture(struct tcb *);
# endif
# ifdef HAVE_LINUX_KVM_H
extern void kvm_run_structure_decoder_init(void);
extern void kvm_vcpu_info_free(struct tcb *);
# endif
extern void maybe_load_task_comm(struct tcb *tcp);
/* Print the contents of /proc/$pid/comm. */
extern void print_pid_comm(int pid);
static inline int
printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
{
return printstr_ex(tcp, addr, len, 0);
}
static inline int
printstr(struct tcb *tcp, kernel_ulong_t addr)
{
return printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
}
static inline int
printflags64(const struct xlat *x, uint64_t flags, const char *dflt)
{
return printflags_ex(flags, dflt, XLAT_STYLE_DEFAULT, x, NULL);
}
static inline int
printflags(const struct xlat *x, unsigned int flags, const char *dflt)
{
return printflags64(x, flags, dflt);
}
static inline int
printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
{
return printxvals(val, dflt, x, NULL);
}
static inline int
printxval(const struct xlat *x, const unsigned int val, const char *dflt)
{
return printxvals(val, dflt, x, NULL);
}
static inline int
printxval64_u(const struct xlat *x, const uint64_t val, const char *dflt)
{
return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
}
static inline int
printxval_u(const struct xlat *x, const unsigned int val, const char *dflt)
{
return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
}
static inline int
printxval64_d(const struct xlat *x, const int64_t val, const char *dflt)
{
return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
}
static inline int
printxval_d(const struct xlat *x, const int val, const char *dflt)
{
return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
}
static inline void
tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
print_obj_by_addr_size_fn print_func)
{
tprint_iov_upto(tcp, len, addr, -1, print_func, NULL);
}
# if HAVE_ARCH_TIME32_SYSCALLS || HAVE_ARCH_TIMESPEC32
extern bool print_timespec32_data_size(const void *arg, size_t size);
extern bool print_timespec32_array_data_size(const void *arg,
unsigned int nmemb,
size_t size);
# endif /* HAVE_ARCH_TIME32_SYSCALLS || HAVE_ARCH_TIMESPEC32 */
# if HAVE_ARCH_TIME32_SYSCALLS
extern int print_timespec32(struct tcb *, kernel_ulong_t);
extern const char *sprint_timespec32(struct tcb *, kernel_ulong_t);
extern int print_timespec32_utime_pair(struct tcb *, kernel_ulong_t);
extern int print_itimerspec32(struct tcb *, kernel_ulong_t);
extern int print_timex32(struct tcb *, kernel_ulong_t);
# endif /* HAVE_ARCH_TIME32_SYSCALLS */
extern bool print_timespec64_data_size(const void *arg, size_t size);
extern bool print_timespec64_array_data_size(const void *arg,
unsigned int nmemb,
size_t size);
extern int print_timespec64(struct tcb *, kernel_ulong_t);
extern const char *sprint_timespec64(struct tcb *, kernel_ulong_t);
extern int print_timespec64_utime_pair(struct tcb *, kernel_ulong_t);
extern int print_itimerspec64(struct tcb *, kernel_ulong_t);
extern bool print_timeval64_data_size(const void *arg, size_t size);
extern int print_timex64(struct tcb *, kernel_ulong_t);
# ifdef SPARC64
extern int print_sparc64_timex(struct tcb *, kernel_ulong_t);
# endif
# ifdef ALPHA
typedef struct {
int tv_sec, tv_usec;
} timeval32_t;
extern void print_timeval32_t(const timeval32_t *);
extern void printrusage32(struct tcb *, kernel_ulong_t);
extern const char *sprint_timeval32(struct tcb *, kernel_ulong_t addr);
extern int print_timeval32(struct tcb *, kernel_ulong_t addr);
extern int print_timeval32_utimes(struct tcb *, kernel_ulong_t addr);
extern int print_itimerval32(struct tcb *, kernel_ulong_t addr);
# endif
# ifdef HAVE_STRUCT_USER_DESC
/**
* Filter what to print from the point of view of the get_thread_area syscall.
* Kernel copies only entry_number field at first and then tries to write the
* whole structure.
*/
enum user_desc_print_filter {
/* Print the "entering" part of struct user_desc - entry_number. */
USER_DESC_ENTERING = 1,
/* Print the "exiting" part of the structure. */
USER_DESC_EXITING = 2,
USER_DESC_BOTH = USER_DESC_ENTERING | USER_DESC_EXITING,
};
extern void print_user_desc(struct tcb *, kernel_ulong_t addr,
enum user_desc_print_filter filter);
# 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);
extern void tprintf_comment(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
extern void tprints_comment(const char *str);
/*
* Staging output for status qualifier.
*/
extern FILE *strace_open_memstream(struct tcb *tcp);
extern void strace_close_memstream(struct tcb *tcp, bool publish);
static inline void
printaddr_comment(const kernel_ulong_t addr)
{
tprintf_comment("%#llx", (unsigned long long) addr);
}
# if SIZEOF_KERNEL_LONG_T > 4 \
&& (SIZEOF_KERNEL_LONG_T > SIZEOF_LONG || !defined(current_wordsize))
# define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 1
# else
# define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 0
# endif
# if SIZEOF_KERNEL_LONG_T == SIZEOF_LONG || !defined(current_wordsize)
# define ANY_WORDSIZE_EQUALS_TO_KERNEL_LONG 1
# else
# define ANY_WORDSIZE_EQUALS_TO_KERNEL_LONG 0
# endif
# define DECL_PRINTNUM(name) \
extern bool \
printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
ATTRIBUTE_FORMAT((printf, 3, 0)) \
/* End of DECL_PRINTNUM definition. */
DECL_PRINTNUM(short);
DECL_PRINTNUM(int);
DECL_PRINTNUM(int64);
# undef DECL_PRINTNUM
# define DECL_PRINTNUM_ADDR(name) \
extern bool \
printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr) \
/* End of DECL_PRINTNUM_ADDR definition. */
DECL_PRINTNUM_ADDR(int);
DECL_PRINTNUM_ADDR(int64);
# undef DECL_PRINTNUM_ADDR
extern bool
printnum_fd(struct tcb *, kernel_ulong_t addr);
extern bool
printnum_pid(struct tcb *const tcp, const kernel_ulong_t addr, enum pid_type type);
static inline bool
printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
{
return dispatch_wordsize(printnum_int64, printnum_int,
tcp, addr, opt_wordsize("%" PRId64, "%d"));
}
static inline bool
printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
{
return dispatch_wordsize(printnum_int64, printnum_int,
tcp, addr, opt_wordsize("%" PRIu64, "%u"));
}
static inline bool
printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
{
return dispatch_wordsize(printnum_addr_int64, printnum_addr_int,
tcp, addr);
}
static inline bool
printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
{
return dispatch_klongsize(printnum_addr_int64, printnum_addr_int,
tcp, addr);
}
# define DECL_PRINTPAIR(name) \
extern bool \
printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
ATTRIBUTE_FORMAT((printf, 3, 0)) \
/* End of DECL_PRINTPAIR definition. */
DECL_PRINTPAIR(int);
DECL_PRINTPAIR(int64);
# undef DECL_PRINTPAIR
static inline kernel_long_t
truncate_klong_to_current_wordsize(const kernel_long_t v)
{
# if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
if (current_wordsize < sizeof(v)) {
return (int) v;
} else
# endif
{
return v;
}
}
static inline kernel_ulong_t
truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
{
# if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
if (current_wordsize < sizeof(v)) {
return (unsigned int) v;
} else
# endif
{
return v;
}
}
static inline kernel_long_t
truncate_klong_to_current_klongsize(const kernel_long_t v)
{
# if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
if (current_klongsize < sizeof(v)) {
return (int) v;
} else
# endif
{
return v;
}
}
static inline kernel_ulong_t
truncate_kulong_to_current_klongsize(const kernel_ulong_t v)
{
# if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
if (current_klongsize < sizeof(v)) {
return (unsigned int) v;
} else
# endif
{
return v;
}
}
/*
* Cast a pointer or a pointer-sized integer to kernel_ulong_t.
*/
# define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
/*
* Zero-extend a signed integer type to unsigned long long.
*/
# define zero_extend_signed_to_ull(v) \
(sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
(unsigned long long) (v))
/*
* Sign-extend an unsigned integer type to long long.
*/
# define sign_extend_unsigned_to_ll(v) \
(sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
(long long) (v))
/*
* Computes the popcount of a vector of 32-bit values.
*/
static inline unsigned int
popcount32(const uint32_t *a, unsigned int size)
{
unsigned int count = 0;
for (; size; ++a, --size) {
uint32_t x = *a;
# ifdef HAVE___BUILTIN_POPCOUNT
count += __builtin_popcount(x);
# else
for (; x; ++count)
x &= x - 1;
# endif
}
return count;
}
extern const char *const errnoent[];
extern const char *const signalent[];
extern const unsigned int nerrnos;
extern const unsigned int nsignals;
extern const struct_sysent sysent0[];
extern const struct_ioctlent ioctlent0[];
extern const char *const personality_names[];
# if SUPPORTED_PERSONALITIES > 1
extern const struct_sysent *sysent;
extern const struct_ioctlent *ioctlent;
# else
# define sysent sysent0
# define ioctlent ioctlent0
# endif
extern unsigned nsyscalls;
extern unsigned nioctlents;
extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
struct audit_arch_t {
unsigned int arch; /* AUDIT_ARCH_* */
unsigned int flag;
};
extern const struct audit_arch_t audit_arch_vec[SUPPORTED_PERSONALITIES];
# ifdef ENABLE_COVERAGE_GCOV
# ifdef HAVE_GCOV_H
# include <gcov.h>
# else
extern void __gcov_dump(void);
# endif
# define GCOV_DUMP __gcov_dump()
# else
# define GCOV_DUMP
# endif
# ifdef IN_MPERS_BOOTSTRAP
/* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
# define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
# else /* !IN_MPERS_BOOTSTRAP */
# if SUPPORTED_PERSONALITIES > 1
# include "printers.h"
# else
# include "native_printer_decls.h"
# endif
# define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
# endif /* !IN_MPERS_BOOTSTRAP */
# ifdef IN_MPERS
# define MPERS_PTR_ARG(arg_) void *
# else
# define MPERS_PTR_ARG(arg_) arg_
# endif
/* Checks that sysent[scno] is not out of range. */
static inline bool
scno_in_range(kernel_ulong_t scno)
{
return scno < nsyscalls;
}
/*
* Checks whether scno is not out of range,
* its corresponding sysent[scno].sys_func is non-NULL,
* and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
*/
static inline bool
scno_is_valid(kernel_ulong_t scno)
{
return scno_in_range(scno)
&& sysent[scno].sys_func
&& !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
}
# define MPERS_FUNC_NAME__(prefix, name) prefix ## name
# define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
# define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
# define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
# define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
# define ILOG2_ITER_(val_, ret_, bit_) \
do { \
typeof(ret_) shift_ = \
((val_) > ((((typeof(val_)) 1) \
<< (1 << (bit_))) - 1)) << (bit_); \
(val_) >>= shift_; \
(ret_) |= shift_; \
} while (0)
/**
* Calculate floor(log2(val)), with the exception of val == 0, for which 0
* is returned as well.
*
* @param val 64-bit value to calculate integer base-2 logarithm for.
* @return (unsigned int) floor(log2(val)) if val > 0, 0 if val == 0.
*/
static inline unsigned int
ilog2_64(uint64_t val)
{
unsigned int ret = 0;
ILOG2_ITER_(val, ret, 5);
ILOG2_ITER_(val, ret, 4);
ILOG2_ITER_(val, ret, 3);
ILOG2_ITER_(val, ret, 2);
ILOG2_ITER_(val, ret, 1);
ILOG2_ITER_(val, ret, 0);
return ret;
}
/**
* Calculate floor(log2(val)), with the exception of val == 0, for which 0
* is returned as well.
*
* @param val 32-bit value to calculate integer base-2 logarithm for.
* @return (unsigned int) floor(log2(val)) if val > 0, 0 if val == 0.
*/
static inline unsigned int
ilog2_32(uint32_t val)
{
unsigned int ret = 0;
ILOG2_ITER_(val, ret, 4);
ILOG2_ITER_(val, ret, 3);
ILOG2_ITER_(val, ret, 2);
ILOG2_ITER_(val, ret, 1);
ILOG2_ITER_(val, ret, 0);
return ret;
}
# if SIZEOF_KERNEL_LONG_T > 4
# define ilog2_klong ilog2_64
# else
# define ilog2_klong ilog2_32
# endif
# undef ILOG2_ITER_
# include "print_fields.h"
/*
* When u64 is interpreted by the kernel as an address, there is a difference
* in behaviour between 32-bit and 64-bit kernel in the way u64_to_user_ptr
* works (32-bit kernel trims higher bits during conversion which may result
* to a valid address). Since 32-bit strace cannot figure out what kind of
* kernel the tracee is running on, it has to account for both possibilities.
*/
# if CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL
/**
* Print raw 64-bit value as an address if it's too big to fit in strace's
* kernel_long_t.
*/
static inline void
print_big_u64_addr(const uint64_t addr)
{
if (sizeof(kernel_long_t) < sizeof(addr) && addr > max_kaddr()) {
printaddr64(addr);
tprint_alternative_value();
}
}
# else /* !CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
# define print_big_u64_addr(addr_) ((void) 0)
# endif /* CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
# ifndef IN_MPERS_BOOTSTRAP
# include "syscall.h"
# endif
#endif /* !STRACE_DEFS_H */