| /* |
| * 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) 2001-2017 The strace developers. |
| * 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. |
| */ |
| |
| #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 "kernel_types.h" |
| #include "gcc_compat.h" |
| #include "macros.h" |
| #include "mpers_type.h" |
| #include "sysent.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 |
| |
| #ifndef offsetofend |
| # define offsetofend(type, member) \ |
| (offsetof(type, member) + sizeof(((type *)NULL)->member)) |
| #endif |
| |
| /* 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 |
| |
| #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 defined X86_64 |
| # define SUPPORTED_PERSONALITIES 3 |
| # define PERSONALITY2_WORDSIZE 4 |
| # define PERSONALITY2_KLONGSIZE PERSONALITY0_KLONGSIZE |
| #elif defined AARCH64 \ |
| || defined POWERPC64 \ |
| || defined RISCV \ |
| || defined SPARC64 \ |
| || defined TILE \ |
| || defined X32 |
| # define SUPPORTED_PERSONALITIES 2 |
| #else |
| # define SUPPORTED_PERSONALITIES 1 |
| #endif |
| |
| #if defined TILE && defined __tilepro__ |
| # define DEFAULT_PERSONALITY 1 |
| #else |
| # define DEFAULT_PERSONALITY 0 |
| #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 > 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" |
| #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" |
| #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" |
| #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" |
| #endif |
| |
| typedef struct ioctlent { |
| const char *symbol; |
| unsigned int code; |
| } struct_ioctlent; |
| |
| struct inject_opts { |
| uint16_t first; |
| uint16_t step; |
| uint16_t signo; |
| int rval; |
| }; |
| |
| #define MAX_ERRNO_VALUE 4095 |
| #define INJECT_OPTS_RVAL_DEFAULT (-(MAX_ERRNO_VALUE + 1)) |
| |
| /* 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 */ |
| unsigned long u_error; /* Error code */ |
| kernel_ulong_t scno; /* System call number */ |
| kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */ |
| kernel_long_t u_rval; /* Return value */ |
| #if SUPPORTED_PERSONALITIES > 1 |
| unsigned int currpers; /* Personality at the time of scno update */ |
| #endif |
| int sys_func_rval; /* Syscall entry parser's return value */ |
| int curcol; /* Output column for this process */ |
| FILE *outf; /* Output file for this process */ |
| 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 dummy struct for bad scno */ |
| const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */ |
| struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES]; |
| 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 */ |
| |
| #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 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_SKIP_DETACH_ON_FIRST_EXEC 0x100 /* -b execve should skip detach on first execve */ |
| |
| /* 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 QUAL_SIGNAL 0x100 /* report events with this signal */ |
| #define QUAL_READ 0x200 /* dump data read from this file descriptor */ |
| #define QUAL_WRITE 0x400 /* dump data written to this file descriptor */ |
| |
| #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) |
| #define hide_log(tcp) ((tcp)->flags & TCB_HIDE_LOG) |
| |
| #include "xlat.h" |
| |
| extern const struct xlat addrfams[]; |
| 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 evdev_abs[]; |
| extern const struct xlat inet_protocols[]; |
| extern const struct xlat msg_flags[]; |
| extern const struct xlat netlink_protocols[]; |
| extern const struct xlat open_access_modes[]; |
| extern const struct xlat open_mode_flags[]; |
| extern const struct xlat resource_flags[]; |
| 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 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 */ |
| #define RVAL_FD 010 /* file descriptor */ |
| #define RVAL_MASK 013 /* 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 IOCTL_NUMBER_UNKNOWN 0 |
| #define IOCTL_NUMBER_HANDLED 1 |
| #define IOCTL_NUMBER_STOP_LOOKUP 010 |
| |
| #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL) |
| |
| #if defined(ARM) || defined(AARCH64) \ |
| || defined(I386) || defined(X32) || defined(X86_64) \ |
| || defined(IA64) \ |
| || defined(BFIN) \ |
| || defined(M68K) \ |
| || defined(MICROBLAZE) \ |
| || defined(RISCV) \ |
| || defined(S390) \ |
| || defined(SH) || defined(SH64) \ |
| || defined(SPARC) || defined(SPARC64) \ |
| /**/ |
| # define NEED_UID16_PARSERS 1 |
| #else |
| # define NEED_UID16_PARSERS 0 |
| #endif |
| |
| enum sock_proto { |
| SOCK_PROTO_UNKNOWN, |
| SOCK_PROTO_UNIX, |
| SOCK_PROTO_TCP, |
| SOCK_PROTO_UDP, |
| SOCK_PROTO_TCPv6, |
| SOCK_PROTO_UDPv6, |
| SOCK_PROTO_NETLINK |
| }; |
| extern enum sock_proto get_proto_by_name(const char *); |
| |
| enum iov_decode { |
| IOV_DECODE_ADDR, |
| IOV_DECODE_STR, |
| IOV_DECODE_NETLINK |
| }; |
| |
| 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; |
| /* are we filtering traces based on paths? */ |
| extern const char **paths_selected; |
| #define tracing_paths (paths_selected != NULL) |
| 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)) |
| |
| 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_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; |
| void error_msg_and_help(const char *fmt, ...) |
| ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; |
| void perror_msg_and_die(const char *fmt, ...) |
| ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; |
| |
| void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1)); |
| void *xcalloc(size_t nmemb, size_t size) |
| ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2)); |
| void *xreallocarray(void *ptr, size_t nmemb, size_t size) |
| ATTRIBUTE_ALLOC_SIZE((2, 3)); |
| char *xstrdup(const char *str) ATTRIBUTE_MALLOC; |
| char *xstrndup(const char *str, size_t n) ATTRIBUTE_MALLOC; |
| |
| extern int read_int_from_file(const char *, int *); |
| |
| extern void set_sortby(const char *); |
| extern void set_overhead(int); |
| extern void print_pc(struct tcb *); |
| |
| 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 timeval *); |
| extern int syscall_exiting_trace(struct tcb *, struct timeval, int); |
| extern void syscall_exiting_finish(struct tcb *); |
| |
| extern void count_syscall(struct tcb *, const struct timeval *); |
| extern void call_summary(FILE *); |
| |
| extern void clear_regs(void); |
| extern int get_scno(struct tcb *); |
| extern kernel_ulong_t get_rt_sigframe_addr(struct tcb *); |
| |
| /** |
| * Convert syscall number to 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); |
| extern const char *err_name(unsigned long err); |
| |
| 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); |
| } |
| |
| 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)) |
| |
| extern int |
| umoven_or_printaddr(struct tcb *, kernel_ulong_t addr, |
| unsigned int len, void *laddr); |
| #define umove_or_printaddr(pid, addr, objp) \ |
| umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp)) |
| |
| extern int |
| umoven_or_printaddr_ignore_syserror(struct tcb *, kernel_ulong_t addr, |
| unsigned int len, void *laddr); |
| |
| extern int |
| umovestr(struct tcb *, kernel_ulong_t addr, unsigned int len, char *laddr); |
| |
| extern int upeek(int pid, unsigned long, kernel_ulong_t *); |
| extern int upoke(int pid, unsigned long, kernel_ulong_t); |
| |
| extern bool |
| print_array(struct tcb *, |
| kernel_ulong_t start_addr, |
| size_t nmemb, |
| void *elem_buf, |
| size_t elem_size, |
| int (*umoven_func)(struct tcb *, |
| kernel_ulong_t, |
| unsigned int, |
| void *), |
| bool (*print_func)(struct tcb *, |
| void *elem_buf, |
| size_t elem_size, |
| void *opaque_data), |
| void *opaque_data); |
| |
| #if defined ALPHA || defined IA64 || defined MIPS \ |
| || defined SH || defined SPARC || defined SPARC64 |
| # define HAVE_GETRVAL2 |
| extern long getrval2(struct tcb *); |
| #else |
| # undef HAVE_GETRVAL2 |
| #endif |
| |
| 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 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 *xlat_search(const struct xlat *, const size_t, const 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(void); |
| |
| extern unsigned long get_pagesize(void); |
| extern int |
| string_to_uint_ex(const char *str, char **endptr, |
| unsigned int max_val, const char *accepted_ending); |
| extern int string_to_uint(const char *str); |
| static inline int |
| string_to_uint_upto(const char *const str, unsigned int max_val) |
| { |
| return string_to_uint_ex(str, NULL, max_val, NULL); |
| } |
| 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) |
| |
| #define QUOTE_0_TERMINATED 0x01 |
| #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02 |
| #define QUOTE_OMIT_TRAILING_0 0x08 |
| #define QUOTE_FORCE_HEX 0x10 |
| |
| extern int string_quote(const char *, char *, unsigned int, unsigned int); |
| extern int print_quoted_string(const char *, unsigned int, 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 int getllval(struct tcb *, unsigned long long *, int); |
| extern int printllval(struct tcb *, const char *, int) |
| ATTRIBUTE_FORMAT((printf, 2, 0)); |
| |
| extern void printaddr(kernel_ulong_t addr); |
| extern int printxvals(const uint64_t, const char *, const struct xlat *, ...) |
| ATTRIBUTE_SENTINEL; |
| extern int printxval_searchn(const struct xlat *xlat, size_t xlat_size, |
| uint64_t val, const char *dflt); |
| #define printxval_search(xlat__, val__, dflt__) \ |
| printxval_searchn(xlat__, ARRAY_SIZE(xlat__), val__, dflt__) |
| extern int printargs(struct tcb *); |
| extern int printargs_u(struct tcb *); |
| extern int printargs_d(struct tcb *); |
| |
| extern void addflags(const struct xlat *, uint64_t); |
| extern int printflags_ex(uint64_t, const char *, const struct xlat *, ...) |
| ATTRIBUTE_SENTINEL; |
| extern const char *sprintflags(const char *, const struct xlat *, uint64_t); |
| 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); |
| extern void print_symbolic_mode_t(unsigned int); |
| extern void print_numeric_umode_t(unsigned short); |
| extern void print_numeric_long_umask(unsigned long); |
| extern void print_dev_t(unsigned long long dev); |
| extern void print_abnormal_hi(kernel_ulong_t); |
| |
| 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, int len); |
| |
| extern void |
| printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len, |
| unsigned int user_style); |
| |
| extern void |
| printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n); |
| |
| extern void |
| printpath(struct tcb *, kernel_ulong_t addr); |
| |
| #define TIMESPEC_TEXT_BUFSIZE \ |
| (sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}")) |
| extern void printfd(struct tcb *, int); |
| 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 const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode); |
| extern bool print_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode); |
| extern void print_dirfd(struct tcb *, int); |
| |
| extern int |
| decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen); |
| |
| extern void printuid(const char *, 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); |
| #define tprintsigmask_addr(prefix, mask) \ |
| tprints(sprintsigmask_n((prefix), (mask), sizeof(mask))) |
| extern void printsignal(int); |
| |
| extern void |
| tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr, |
| enum iov_decode, kernel_ulong_t data_size); |
| |
| 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 |
| print_seccomp_filter(struct tcb *, kernel_ulong_t addr); |
| |
| extern void |
| print_seccomp_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; |
| |
| 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 void print_ifindex(unsigned int); |
| |
| struct number_set; |
| extern struct number_set read_set; |
| extern struct number_set write_set; |
| extern struct number_set signal_set; |
| |
| extern bool is_number_in_set(unsigned int number, const struct number_set *); |
| extern void qualify(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) |
| DECL_IOCTL(dm); |
| DECL_IOCTL(file); |
| DECL_IOCTL(fs_x); |
| DECL_IOCTL(nsfs); |
| DECL_IOCTL(ptp); |
| DECL_IOCTL(scsi); |
| DECL_IOCTL(term); |
| DECL_IOCTL(ubi); |
| DECL_IOCTL(uffdio); |
| #undef DECL_IOCTL |
| |
| extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg); |
| |
| struct nlmsghdr; |
| |
| typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *, |
| kernel_ulong_t addr, kernel_ulong_t len); |
| |
| #define DECL_NETLINK(name) \ |
| extern bool \ |
| decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \ |
| kernel_ulong_t addr, kernel_ulong_t len) |
| DECL_NETLINK(sock_diag); |
| |
| 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 *); |
| extern void unwind_tcb_fin(struct tcb *); |
| extern void unwind_cache_invalidate(struct tcb *); |
| extern void unwind_print_stacktrace(struct tcb *); |
| extern void unwind_capture_stacktrace(struct tcb *); |
| #endif |
| |
| static inline void |
| printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len) |
| { |
| printstr_ex(tcp, addr, len, 0); |
| } |
| |
| static inline void |
| printstr(struct tcb *tcp, kernel_ulong_t addr) |
| { |
| 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, 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 void |
| tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr, |
| enum iov_decode decode_iov) |
| { |
| tprint_iov_upto(tcp, len, addr, decode_iov, -1); |
| } |
| |
| #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 void print_timeval32(struct tcb *, kernel_ulong_t addr); |
| extern void print_timeval32_utimes(struct tcb *, kernel_ulong_t addr); |
| extern void print_itimerval32(struct tcb *, kernel_ulong_t addr); |
| #endif |
| |
| #ifdef HAVE_STRUCT_USER_DESC |
| extern void print_user_desc(struct tcb *, kernel_ulong_t addr); |
| #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); |
| |
| #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 |
| # 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 ANY_WORDSIZE_LESS_THAN_KERNEL_LONG \ |
| (SIZEOF_KERNEL_LONG_T > 4 \ |
| && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize))) |
| |
| #define DECL_PRINTNUM(name) \ |
| extern bool \ |
| printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \ |
| ATTRIBUTE_FORMAT((printf, 3, 0)) |
| 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) |
| DECL_PRINTNUM_ADDR(int); |
| DECL_PRINTNUM_ADDR(int64); |
| #undef DECL_PRINTNUM_ADDR |
| |
| #ifndef current_wordsize |
| extern bool |
| printnum_long_int(struct tcb *, kernel_ulong_t addr, |
| const char *fmt_long, const char *fmt_int) |
| ATTRIBUTE_FORMAT((printf, 3, 0)) |
| ATTRIBUTE_FORMAT((printf, 4, 0)); |
| extern bool printnum_addr_long_int(struct tcb *, kernel_ulong_t addr); |
| # define printnum_slong(tcp, addr) \ |
| printnum_long_int((tcp), (addr), "%" PRId64, "%d") |
| # define printnum_ulong(tcp, addr) \ |
| printnum_long_int((tcp), (addr), "%" PRIu64, "%u") |
| # define printnum_ptr(tcp, addr) \ |
| printnum_addr_long_int((tcp), (addr)) |
| #elif current_wordsize > 4 |
| # define printnum_slong(tcp, addr) \ |
| printnum_int64((tcp), (addr), "%" PRId64) |
| # define printnum_ulong(tcp, addr) \ |
| printnum_int64((tcp), (addr), "%" PRIu64) |
| # define printnum_ptr(tcp, addr) \ |
| printnum_addr_int64((tcp), (addr)) |
| #else /* current_wordsize == 4 */ |
| # define printnum_slong(tcp, addr) \ |
| printnum_int((tcp), (addr), "%d") |
| # define printnum_ulong(tcp, addr) \ |
| printnum_int((tcp), (addr), "%u") |
| # define printnum_ptr(tcp, addr) \ |
| printnum_addr_int((tcp), (addr)) |
| #endif |
| |
| #ifndef current_klongsize |
| extern bool printnum_addr_klong_int(struct tcb *, kernel_ulong_t addr); |
| # define printnum_kptr(tcp, addr) \ |
| printnum_addr_klong_int((tcp), (addr)) |
| #elif current_klongsize > 4 |
| # define printnum_kptr(tcp, addr) \ |
| printnum_addr_int64((tcp), (addr)) |
| #else /* current_klongsize == 4 */ |
| # define printnum_kptr(tcp, addr) \ |
| printnum_addr_int((tcp), (addr)) |
| #endif |
| |
| #define DECL_PRINTPAIR(name) \ |
| extern bool \ |
| printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \ |
| ATTRIBUTE_FORMAT((printf, 3, 0)) |
| 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; |
| } |
| } |
| |
| /* |
| * 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)) |
| |
| extern const struct_sysent sysent0[]; |
| extern const char *const errnoent0[]; |
| extern const char *const signalent0[]; |
| extern const struct_ioctlent ioctlent0[]; |
| |
| #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 const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES]; |
| extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES]; |
| extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES]; |
| |
| #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 */ |
| |
| /* 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) |
| |
| #if SIZEOF_KERNEL_LONG_T > SIZEOF_LONG |
| # define PRI_kl "ll" |
| #else |
| # define PRI_kl "l" |
| #endif |
| |
| #define PRI_kld PRI_kl"d" |
| #define PRI_klu PRI_kl"u" |
| #define PRI_klx PRI_kl"x" |
| |
| /* |
| * The kernel used to define 64-bit types on 64-bit systems on a per-arch |
| * basis. Some architectures would use unsigned long and others would use |
| * unsigned long long. These types were exported as part of the |
| * kernel-userspace ABI and now must be maintained forever. This matches |
| * what the kernel exports for each architecture so we don't need to cast |
| * every printing of __u64 or __s64 to stdint types. |
| */ |
| #if SIZEOF_LONG == 4 |
| # define PRI__64 "ll" |
| #elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC |
| # define PRI__64 "l" |
| #else |
| # define PRI__64 "ll" |
| #endif |
| |
| #define PRI__d64 PRI__64"d" |
| #define PRI__u64 PRI__64"u" |
| #define PRI__x64 PRI__64"x" |
| |
| #endif /* !STRACE_DEFS_H */ |