# include "config.h"
#endif
-#ifdef MIPS
-# include <sgidefs.h>
-# if _MIPS_SIM == _MIPS_SIM_ABI64
-# define LINUX_MIPSN64
-# elif _MIPS_SIM == _MIPS_SIM_NABI32
-# define LINUX_MIPSN32
-# elif _MIPS_SIM == _MIPS_SIM_ABI32
-# define LINUX_MIPSO32
-# else
-# error Unsupported _MIPS_SIM
-# endif
-#endif
-
#include <features.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
extern char *stpcpy(char *dst, const char *src);
#endif
-#if !defined __GNUC__
-# define __attribute__(x) /*nothing*/
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define __attribute__(x) /* empty */
+# define GNUC_PREREQ(maj, min) 0
+#endif
+
+#if GNUC_PREREQ(2, 5)
+# define ATTRIBUTE_NORETURN __attribute__((__noreturn__))
+#else
+# define ATTRIBUTE_NORETURN /* empty */
+#endif
+
+#if GNUC_PREREQ(2, 7)
+# define ATTRIBUTE_FORMAT(args) __attribute__((__format__ args))
+# define ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg)))
+# define ATTRIBUTE_PACKED __attribute__((__packed__))
+#else
+# define ATTRIBUTE_FORMAT(args) /* empty */
+# define ATTRIBUTE_ALIGNED(arg) /* empty */
+# define ATTRIBUTE_PACKED /* empty */
+#endif
+
+#if GNUC_PREREQ(3, 0)
+# define ATTRIBUTE_MALLOC __attribute__((__malloc__))
+#else
+# define ATTRIBUTE_MALLOC /* empty */
+#endif
+
+#if GNUC_PREREQ(3, 1)
+# define ATTRIBUTE_NOINLINE __attribute__((__noinline__))
+#else
+# define ATTRIBUTE_NOINLINE /* empty */
+#endif
+
+#if GNUC_PREREQ(4, 3)
+# define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args))
+#else
+# define ATTRIBUTE_ALLOC_SIZE(args) /* empty */
#endif
#ifndef offsetof
*/
#define USE_CUSTOM_PRINTF 0
-#ifdef NEED_PTRACE_PROTOTYPE_WORKAROUND
-# define ptrace xptrace
-# include <sys/ptrace.h>
-# undef ptrace
-extern long ptrace(int, int, char *, long);
-#else
-# include <sys/ptrace.h>
-#endif
-
-#if defined(POWERPC)
-# include <asm/ptrace.h>
-#endif
-
-#if defined(TILE)
-# include <asm/ptrace.h> /* struct pt_regs */
-#endif
-
#ifndef ERESTARTSYS
# define ERESTARTSYS 512
#endif
# define ERESTART_RESTARTBLOCK 516
#endif
-#if !HAVE_DECL_PTRACE_SETOPTIONS
-# define PTRACE_SETOPTIONS 0x4200
-#endif
-#if !HAVE_DECL_PTRACE_GETEVENTMSG
-# define PTRACE_GETEVENTMSG 0x4201
-#endif
-#if !HAVE_DECL_PTRACE_GETSIGINFO
-# define PTRACE_GETSIGINFO 0x4202
-#endif
-
-#if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
-# define PTRACE_O_TRACESYSGOOD 0x00000001
-#endif
-#if !HAVE_DECL_PTRACE_O_TRACEFORK
-# define PTRACE_O_TRACEFORK 0x00000002
-#endif
-#if !HAVE_DECL_PTRACE_O_TRACEVFORK
-# define PTRACE_O_TRACEVFORK 0x00000004
-#endif
-#if !HAVE_DECL_PTRACE_O_TRACECLONE
-# define PTRACE_O_TRACECLONE 0x00000008
-#endif
-#if !HAVE_DECL_PTRACE_O_TRACEEXEC
-# define PTRACE_O_TRACEEXEC 0x00000010
-#endif
-#if !HAVE_DECL_PTRACE_O_TRACEEXIT
-# define PTRACE_O_TRACEEXIT 0x00000040
-#endif
-
-#if !HAVE_DECL_PTRACE_EVENT_FORK
-# define PTRACE_EVENT_FORK 1
-#endif
-#if !HAVE_DECL_PTRACE_EVENT_VFORK
-# define PTRACE_EVENT_VFORK 2
-#endif
-#if !HAVE_DECL_PTRACE_EVENT_CLONE
-# define PTRACE_EVENT_CLONE 3
-#endif
-#if !HAVE_DECL_PTRACE_EVENT_EXEC
-# define PTRACE_EVENT_EXEC 4
-#endif
-#if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
-# define PTRACE_EVENT_VFORK_DONE 5
-#endif
-#if !HAVE_DECL_PTRACE_EVENT_EXIT
-# define PTRACE_EVENT_EXIT 6
-#endif
-
-#if !HAVE_DECL_PTRACE_PEEKUSER
-# define PTRACE_PEEKUSER PTRACE_PEEKUSR
-#endif
-#if !HAVE_DECL_PTRACE_POKEUSER
-# define PTRACE_POKEUSER PTRACE_POKEUSR
-#endif
-
-#undef PTRACE_SEIZE
-#define PTRACE_SEIZE 0x4206
-#undef PTRACE_INTERRUPT
-#define PTRACE_INTERRUPT 0x4207
-#undef PTRACE_LISTEN
-#define PTRACE_LISTEN 0x4208
-#undef PTRACE_EVENT_STOP
-#define PTRACE_EVENT_STOP 128
-
-#ifdef ALPHA
-# define REG_R0 0
-# define REG_A0 16
-# define REG_A3 19
-# define REG_FP 30
-# define REG_PC 64
-#endif /* ALPHA */
-#ifdef MIPS
-# define REG_V0 2
-# define REG_A0 4
-# define REG_A3 7
-# define REG_SP 29
-# define REG_EPC 64
-#endif /* MIPS */
-#ifdef HPPA
-# define PT_GR20 (20*4)
-# define PT_GR26 (26*4)
-# define PT_GR28 (28*4)
-# define PT_IAOQ0 (106*4)
-# define PT_IAOQ1 (107*4)
-#endif /* HPPA */
-#ifdef SH64
- /* SH64 Linux - this code assumes the following kernel API for system calls:
- PC Offset 0
- System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
- where n = no. of parameters.
- Other regs Offset 24+
-
- On entry: R2-7 = parameters 1-6 (as many as necessary)
- On return: R9 = result. */
-
- /* Offset for peeks of registers */
-# define REG_OFFSET (24)
-# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
-# define REG_PC (0*8)
-# define REG_SYSCALL (2*8)
-#endif /* SH64 */
-#ifdef AARCH64
-struct arm_pt_regs {
- int uregs[18];
-};
-# define ARM_cpsr uregs[16]
-# define ARM_pc uregs[15]
-# define ARM_lr uregs[14]
-# define ARM_sp uregs[13]
-# define ARM_ip uregs[12]
-# define ARM_fp uregs[11]
-# define ARM_r10 uregs[10]
-# define ARM_r9 uregs[9]
-# define ARM_r8 uregs[8]
-# define ARM_r7 uregs[7]
-# define ARM_r6 uregs[6]
-# define ARM_r5 uregs[5]
-# define ARM_r4 uregs[4]
-# define ARM_r3 uregs[3]
-# define ARM_r2 uregs[2]
-# define ARM_r1 uregs[1]
-# define ARM_r0 uregs[0]
-# define ARM_ORIG_r0 uregs[17]
-#endif /* AARCH64 */
-
#if defined(SPARC) || defined(SPARC64)
-/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
- * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
-# define U_REG_G1 0
-# define U_REG_O0 7
-# define U_REG_O1 8
# define PERSONALITY0_WORDSIZE 4
-# define PERSONALITY1_WORDSIZE 4
# if defined(SPARC64)
-# include <asm/psrcompat.h>
-# define SUPPORTED_PERSONALITIES 3
-# define PERSONALITY2_WORDSIZE 8
-# else
-# include <asm/psr.h>
# define SUPPORTED_PERSONALITIES 2
-# endif /* SPARC64 */
-#endif /* SPARC[64] */
+# define PERSONALITY1_WORDSIZE 8
+# endif
+#endif
#ifdef X86_64
# define SUPPORTED_PERSONALITIES 3
# define PERSONALITY0_WORDSIZE SIZEOF_LONG
#endif
-#if defined(I386) || defined(X86_64)
-extern uint32_t *const i386_esp_ptr;
-#elif defined(IA64)
-extern bool ia64_ia32mode;
-#elif defined(SPARC) || defined(SPARC64)
-extern struct pt_regs sparc_regs;
-#elif defined(ARM)
-extern struct pt_regs arm_regs;
-#elif defined(TILE)
-extern struct pt_regs tile_regs;
-#elif defined(POWERPC)
-extern struct pt_regs ppc_regs;
-#endif
-
typedef struct sysent {
unsigned nargs;
int sys_flags;
typedef struct ioctlent {
const char *symbol;
- unsigned long code;
+ unsigned int code;
} struct_ioctlent;
/* Trace Control Block */
FILE *outf; /* Output file for this process */
const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
+ const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
struct timeval stime; /* System time usage as of last process wait */
struct timeval dtime; /* Delta for system time usage */
struct timeval etime; /* Syscall entry time */
- /* Support for tracing forked processes: */
- long inst[2]; /* Saved clone args (badly named) */
#ifdef USE_LIBUNWIND
struct UPT_info* libunwind_ui;
* are limited to trace(), this condition is never observed in trace_syscall()
* and below.
* The bit is cleared after all syscall exit processing is done.
- * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
- * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
- * TCB_WAITEXECVE bit is used for this purpose (see below).
*
* Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
*/
#define TCB_INSYSCALL 0x04
#define TCB_ATTACHED 0x08 /* We attached to it already */
-#define TCB_BPTSET 0x10 /* "Breakpoint" set after fork(2) */
-#define TCB_REPRINT 0x20 /* We should reprint this syscall on exit */
-#define TCB_FILTERED 0x40 /* This system call has been filtered out */
-/*
- * x86 does not need TCB_WAITEXECVE.
- * It can detect post-execve SIGTRAP by looking at eax/rax.
- * See "not a syscall entry (eax = %ld)\n" message.
- *
- * Note! On new kernels (about 2.5.46+), we use PTRACE_O_TRACEEXEC, which
- * suppresses post-execve SIGTRAP. If you are adding a new arch which is
- * only supported by newer kernels, you most likely don't need to define
- * TCB_WAITEXECVE!
- */
-#if defined(ALPHA) \
- || defined(SPARC) || defined(SPARC64) \
- || defined(POWERPC) \
- || defined(IA64) \
- || defined(HPPA) \
- || defined(SH) || defined(SH64) \
- || defined(S390) || defined(S390X) \
- || defined(ARM) \
- || defined(MIPS)
-/* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
- * to happen. (When it is detected, tracee is continued and this bit is cleared.)
- */
-# define TCB_WAITEXECVE 0x80
-#endif
+#define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
+#define TCB_FILTERED 0x20 /* This system call has been filtered out */
/* qualifier flags */
#define QUAL_TRACE 0x001 /* this system call should be traced */
#define XLAT(x) { x, #x }
#define XLAT_END { 0, NULL }
-extern const struct xlat open_mode_flags[];
extern const struct xlat addrfams[];
-extern const struct xlat struct_user_offsets[];
+extern const struct xlat at_flags[];
extern const struct xlat open_access_modes[];
+extern const struct xlat open_mode_flags[];
extern const struct xlat whence_codes[];
/* Format of syscall return values */
#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
+#define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
+
+#if defined(ARM) || defined(AARCH64) \
+ || defined(I386) || defined(X32) || defined(X86_64) \
+ || defined(IA64) \
+ || defined(BFIN) \
+ || defined(M68K) \
+ || defined(MICROBLAZE) \
+ || defined(S390) \
+ || defined(SH) || defined(SH64) \
+ || defined(SPARC) || defined(SPARC64) \
+ /**/
+# define NEED_UID16_PARSERS 1
+#else
+# define NEED_UID16_PARSERS 0
+#endif
typedef enum {
CFLAG_NONE = 0,
/* are we filtering traces based on paths? */
extern const char **paths_selected;
#define tracing_paths (paths_selected != NULL)
-extern bool need_fork_exec_workarounds;
extern unsigned xflag;
extern unsigned followfork;
#ifdef USE_LIBUNWIND
enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
-void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
-void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
-void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
-void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
-void die_out_of_memory(void) __attribute__ ((noreturn));
+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 perror_msg_and_die(const char *fmt, ...)
+ ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
+void die_out_of_memory(void) 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;
#if USE_CUSTOM_PRINTF
/*
extern void count_syscall(struct tcb *, const struct timeval *);
extern void call_summary(FILE *);
-#if defined(AVR32) \
- || defined(I386) \
- || defined(X86_64) || defined(X32) \
- || defined(AARCH64) \
- || defined(ARM) \
- || defined(SPARC) || defined(SPARC64) \
- || defined(TILE) \
- || defined(OR1K) \
- || defined(METAG) \
- || defined(ARC) \
- || defined(POWERPC)
-extern long get_regs_error;
-# define clear_regs() (get_regs_error = -1)
+extern void clear_regs(void);
extern void get_regs(pid_t pid);
-#else
-# define get_regs_error 0
-# define clear_regs() ((void)0)
-# define get_regs(pid) ((void)0)
-#endif
-extern int umoven(struct tcb *, long, int, char *);
+extern int get_scno(struct tcb *tcp);
+
+extern int umoven(struct tcb *, long, unsigned int, void *);
#define umove(pid, addr, objp) \
- umoven((pid), (addr), sizeof(*(objp)), (char *) (objp))
-extern int umovestr(struct tcb *, long, int, char *);
+ umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
+extern int umovestr(struct tcb *, long, unsigned int, char *);
extern int upeek(int pid, long, long *);
-#if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
+
+#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
-/*
- * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
- * (IOW: no poking in user's text segment),
- * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
- * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
- */
-extern int setbpt(struct tcb *);
-extern int clearbpt(struct tcb *);
extern const char *signame(const int);
extern void pathtrace_select(const char *);
extern const char *xlookup(const struct xlat *, const unsigned int);
extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int);
+extern unsigned long get_pagesize(void);
extern int string_to_uint(const char *str);
-extern int string_quote(const char *, char *, long, int);
extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
+#define QUOTE_0_TERMINATED 0x01
+#define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
+
+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
*/
-#if HAVE_LITTLE_ENDIAN_LONG_LONG
+#ifdef HAVE_LITTLE_ENDIAN_LONG_LONG
# define LONG_LONG(a,b) \
((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
#else
# define LONG_LONG(a,b) \
((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
#endif
-extern int printllval(struct tcb *, const char *, int);
+extern int getllval(struct tcb *, unsigned long long *, int);
+extern int printllval(struct tcb *, const char *, int)
+ ATTRIBUTE_FORMAT((printf, 2, 0));
extern void printxval(const struct xlat *, const unsigned int, const char *);
extern int printargs(struct tcb *);
extern void addflags(const struct xlat *, int);
extern int printflags(const struct xlat *, int, const char *);
extern const char *sprintflags(const char *, const struct xlat *, int);
+extern const char *sprintmode(int);
+extern const char *sprinttime(time_t);
extern void dumpiov_in_msghdr(struct tcb *, long);
extern void dumpiov_in_mmsghdr(struct tcb *, long);
extern void dumpiov(struct tcb *, int, long);
extern void dumpstr(struct tcb *, long, int);
extern void printstr(struct tcb *, long, long);
-extern void printnum(struct tcb *, long, const char *);
-extern void printnum_int(struct tcb *, long, const char *);
+extern void printnum_int(struct tcb *, long, const char *)
+ ATTRIBUTE_FORMAT((printf, 3, 0));
+extern void printnum_long(struct tcb *, long, const char *)
+ ATTRIBUTE_FORMAT((printf, 3, 0));
extern void printpath(struct tcb *, long);
extern void printpathn(struct tcb *, long, unsigned int);
#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
extern void print_timespec(struct tcb *, long);
extern void sprint_timespec(char *, struct tcb *, long);
-#ifdef HAVE_SIGINFO_T
-extern void printsiginfo(siginfo_t *, int);
+extern void printsiginfo(const siginfo_t *, bool);
extern void printsiginfo_at(struct tcb *tcp, long addr);
-#endif
extern void printfd(struct tcb *, int);
-extern bool print_sockaddr_by_inode(const unsigned long);
+extern bool print_sockaddr_by_inode(const unsigned long, const char *);
extern void print_dirfd(struct tcb *, int);
extern void printsock(struct tcb *, long, int);
extern void print_sock_optmgmt(struct tcb *, long, int);
#ifdef ALPHA
extern void printrusage32(struct tcb *, long);
#endif
-extern void printuid(const char *, unsigned long);
+extern void printuid(const char *, const unsigned int);
extern void print_sigset_addr_len(struct tcb *, long, long);
+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(struct tcb *, unsigned long, unsigned long, int decode_iov);
extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
extern void tprint_open_modes(int);
extern const char *sprint_open_modes(int);
extern void print_loff_t(struct tcb *, long);
-
-extern const struct_ioctlent *ioctl_lookup(unsigned long);
-extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
-extern int ioctl_decode(struct tcb *, long, long);
-extern int term_ioctl(struct tcb *, long, long);
-extern int sock_ioctl(struct tcb *, long, long);
-extern int proc_ioctl(struct tcb *, int, int);
-extern int rtc_ioctl(struct tcb *, long, long);
-extern int scsi_ioctl(struct tcb *, long, long);
-extern int block_ioctl(struct tcb *, long, long);
-extern int v4l2_ioctl(struct tcb *, unsigned long, long);
-extern int mtd_ioctl(struct tcb *, long, long);
-extern int ubi_ioctl(struct tcb *, long, long);
-extern int loop_ioctl(struct tcb *, long, long);
-extern int ptp_ioctl(struct tcb *, long, long);
+extern void print_seccomp_filter(struct tcb *tcp, unsigned long);
+
+extern int block_ioctl(struct tcb *, const unsigned int, long);
+extern int evdev_ioctl(struct tcb *, const unsigned int, long);
+extern int loop_ioctl(struct tcb *, const unsigned int, long);
+extern int mtd_ioctl(struct tcb *, const unsigned int, long);
+extern int ptp_ioctl(struct tcb *, const unsigned int, long);
+extern int rtc_ioctl(struct tcb *, const unsigned int, long);
+extern int scsi_ioctl(struct tcb *, const unsigned int, long);
+extern int sock_ioctl(struct tcb *, const unsigned int, long);
+extern int term_ioctl(struct tcb *, const unsigned int, long);
+extern int ubi_ioctl(struct tcb *, const unsigned int, long);
+extern int v4l2_ioctl(struct tcb *, const unsigned int, long);
extern int tv_nz(const struct timeval *);
extern int tv_cmp(const struct timeval *, const struct timeval *);
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 tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
extern void tprints(const char *str);
#if SUPPORTED_PERSONALITIES > 1
/* Only ensures that sysent[scno] isn't out of range */
#define SCNO_IN_RANGE(scno) \
((unsigned long)(scno) < nsyscalls)
+
+#ifndef SYS_FUNC_NAME
+# define SYS_FUNC_NAME(syscall_name) sys_ ## syscall_name
+#endif
+
+#define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(syscall_name)(struct tcb *tcp)
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