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qemu/linux-user/strace.c

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#include <stdio.h>
#include <errno.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/select.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/mman.h>
#include <unistd.h>
#include "qemu.h"
int do_strace=0;
struct syscallname {
int nr;
const char *name;
const char *format;
void (*call)(const struct syscallname *,
abi_long, abi_long, abi_long,
abi_long, abi_long, abi_long);
void (*result)(const struct syscallname *, abi_long);
};
#ifdef __GNUC__
/*
* It is possible that target doesn't have syscall that uses
* following flags but we don't want the compiler to warn
* us about them being unused. Same applies to utility print
* functions. It is ok to keep them while not used.
*/
#define UNUSED __attribute__ ((unused))
#else
#define UNUSED
#endif
/*
* Structure used to translate flag values into strings. This is
* similar that is in the actual strace tool.
*/
struct flags {
abi_long f_value; /* flag */
const char *f_string; /* stringified flag */
};
/* common flags for all architectures */
#define FLAG_GENERIC(name) { name, #name }
/* target specific flags (syscall_defs.h has TARGET_<flag>) */
#define FLAG_TARGET(name) { TARGET_ ## name, #name }
/* end of flags array */
#define FLAG_END { 0, NULL }
UNUSED static const char *get_comma(int);
UNUSED static void print_pointer(abi_long, int);
UNUSED static void print_flags(const struct flags *, abi_long, int);
UNUSED static void print_at_dirfd(abi_long, int);
UNUSED static void print_file_mode(abi_long, int);
UNUSED static void print_open_flags(abi_long, int);
UNUSED static void print_syscall_prologue(const struct syscallname *);
UNUSED static void print_syscall_epilogue(const struct syscallname *);
UNUSED static void print_string(abi_long, int);
UNUSED static void print_raw_param(const char *, abi_long, int);
UNUSED static void print_timeval(abi_ulong, int);
UNUSED static void print_number(abi_long, int);
/*
* Utility functions
*/
static void
print_ipc_cmd(int cmd)
{
#define output_cmd(val) \
if( cmd == val ) { \
gemu_log(#val); \
return; \
}
cmd &= 0xff;
/* General IPC commands */
output_cmd( IPC_RMID );
output_cmd( IPC_SET );
output_cmd( IPC_STAT );
output_cmd( IPC_INFO );
/* msgctl() commands */
#ifdef __USER_MISC
output_cmd( MSG_STAT );
output_cmd( MSG_INFO );
#endif
/* shmctl() commands */
output_cmd( SHM_LOCK );
output_cmd( SHM_UNLOCK );
output_cmd( SHM_STAT );
output_cmd( SHM_INFO );
/* semctl() commands */
output_cmd( GETPID );
output_cmd( GETVAL );
output_cmd( GETALL );
output_cmd( GETNCNT );
output_cmd( GETZCNT );
output_cmd( SETVAL );
output_cmd( SETALL );
output_cmd( SEM_STAT );
output_cmd( SEM_INFO );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
output_cmd( IPC_RMID );
/* Some value we don't recognize */
gemu_log("%d",cmd);
}
#ifdef TARGET_NR__newselect
static void
print_fdset(int n, abi_ulong target_fds_addr)
{
int i;
gemu_log("[");
if( target_fds_addr ) {
abi_long *target_fds;
target_fds = lock_user(VERIFY_READ,
target_fds_addr,
sizeof(*target_fds)*(n / TARGET_ABI_BITS + 1),
1);
if (!target_fds)
return;
for (i=n; i>=0; i--) {
if ((tswapl(target_fds[i / TARGET_ABI_BITS]) >> (i & (TARGET_ABI_BITS - 1))) & 1)
gemu_log("%d,", i );
}
unlock_user(target_fds, target_fds_addr, 0);
}
gemu_log("]");
}
#endif
/*
* Sysycall specific output functions
*/
/* select */
#ifdef TARGET_NR__newselect
static long newselect_arg1 = 0;
static long newselect_arg2 = 0;
static long newselect_arg3 = 0;
static long newselect_arg4 = 0;
static long newselect_arg5 = 0;
static void
print_newselect(const struct syscallname *name,
abi_long arg1, abi_long arg2, abi_long arg3,
abi_long arg4, abi_long arg5, abi_long arg6)
{
gemu_log("%s(" TARGET_ABI_FMT_ld ",", name->name, arg1);
print_fdset(arg1, arg2);
gemu_log(",");
print_fdset(arg1, arg3);
gemu_log(",");
print_fdset(arg1, arg4);
gemu_log(",");
print_timeval(arg5, 1);
gemu_log(")");
/* save for use in the return output function below */
newselect_arg1=arg1;
newselect_arg2=arg2;
newselect_arg3=arg3;
newselect_arg4=arg4;
newselect_arg5=arg5;
}
#endif
#ifdef TARGET_NR_semctl
static void
print_semctl(const struct syscallname *name,
abi_long arg1, abi_long arg2, abi_long arg3,
abi_long arg4, abi_long arg5, abi_long arg6)
{
gemu_log("%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", name->name, arg1, arg2);
print_ipc_cmd(arg3);
gemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4);
}
#endif
static void
print_execve(const struct syscallname *name,
abi_long arg1, abi_long arg2, abi_long arg3,
abi_long arg4, abi_long arg5, abi_long arg6)
{
abi_ulong arg_ptr_addr;
char *s;
if (!(s = lock_user_string(arg1)))
return;
gemu_log("%s(\"%s\",{", name->name, s);
unlock_user(s, arg1, 0);
for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) {
abi_ulong *arg_ptr, arg_addr;
arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
if (!arg_ptr)
return;
arg_addr = tswapl(*arg_ptr);
unlock_user(arg_ptr, arg_ptr_addr, 0);
if (!arg_addr)
break;
if ((s = lock_user_string(arg_addr))) {
gemu_log("\"%s\",", s);
unlock_user(s, arg_addr, 0);
}
}
gemu_log("NULL})");
}
#ifdef TARGET_NR_ipc
static void
print_ipc(const struct syscallname *name,
abi_long arg1, abi_long arg2, abi_long arg3,
abi_long arg4, abi_long arg5, abi_long arg6)
{
switch(arg1) {
case IPCOP_semctl:
gemu_log("semctl(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", arg1, arg2);
print_ipc_cmd(arg3);
gemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4);
break;
default:
gemu_log("%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")",
name->name, arg1, arg2, arg3, arg4);
}
}
#endif
/*
* Variants for the return value output function
*/
static void
print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
{
if( ret == -1 ) {
gemu_log(" = -1 errno=%d (%s)\n", errno, target_strerror(errno));
} else {
gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
}
}
#if 0 /* currently unused */
static void
print_syscall_ret_raw(struct syscallname *name, abi_long ret)
{
gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
}
#endif
#ifdef TARGET_NR__newselect
static void
print_syscall_ret_newselect(const struct syscallname *name, abi_long ret)
{
gemu_log(" = 0x" TARGET_ABI_FMT_lx " (", ret);
print_fdset(newselect_arg1,newselect_arg2);
gemu_log(",");
print_fdset(newselect_arg1,newselect_arg3);
gemu_log(",");
print_fdset(newselect_arg1,newselect_arg4);
gemu_log(",");
print_timeval(newselect_arg5, 1);
gemu_log(")\n");
}
#endif
UNUSED static struct flags access_flags[] = {
FLAG_GENERIC(F_OK),
FLAG_GENERIC(R_OK),
FLAG_GENERIC(W_OK),
FLAG_GENERIC(X_OK),
FLAG_END,
};
UNUSED static struct flags at_file_flags[] = {
#ifdef AT_EACCESS
FLAG_GENERIC(AT_EACCESS),
#endif
#ifdef AT_SYMLINK_NOFOLLOW
FLAG_GENERIC(AT_SYMLINK_NOFOLLOW),
#endif
FLAG_END,
};
UNUSED static struct flags unlinkat_flags[] = {
#ifdef AT_REMOVEDIR
FLAG_GENERIC(AT_REMOVEDIR),
#endif
FLAG_END,
};
UNUSED static struct flags mode_flags[] = {
FLAG_GENERIC(S_IFSOCK),
FLAG_GENERIC(S_IFLNK),
FLAG_GENERIC(S_IFREG),
FLAG_GENERIC(S_IFBLK),
FLAG_GENERIC(S_IFDIR),
FLAG_GENERIC(S_IFCHR),
FLAG_GENERIC(S_IFIFO),
FLAG_END,
};
UNUSED static struct flags open_access_flags[] = {
FLAG_TARGET(O_RDONLY),
FLAG_TARGET(O_WRONLY),
FLAG_TARGET(O_RDWR),
FLAG_END,
};
UNUSED static struct flags open_flags[] = {
FLAG_TARGET(O_APPEND),
FLAG_TARGET(O_CREAT),
FLAG_TARGET(O_DIRECTORY),
FLAG_TARGET(O_EXCL),
FLAG_TARGET(O_LARGEFILE),
FLAG_TARGET(O_NOCTTY),
FLAG_TARGET(O_NOFOLLOW),
FLAG_TARGET(O_NONBLOCK), /* also O_NDELAY */
FLAG_TARGET(O_SYNC),
FLAG_TARGET(O_TRUNC),
#ifdef O_DIRECT
FLAG_TARGET(O_DIRECT),
#endif
FLAG_END,
};
UNUSED static struct flags mount_flags[] = {
#ifdef MS_BIND
FLAG_GENERIC(MS_BIND),
#endif
#ifdef MS_DIRSYNC
FLAG_GENERIC(MS_DIRSYNC),
#endif
FLAG_GENERIC(MS_MANDLOCK),
#ifdef MS_MOVE
FLAG_GENERIC(MS_MOVE),
#endif
FLAG_GENERIC(MS_NOATIME),
FLAG_GENERIC(MS_NODEV),
FLAG_GENERIC(MS_NODIRATIME),
FLAG_GENERIC(MS_NOEXEC),
FLAG_GENERIC(MS_NOSUID),
FLAG_GENERIC(MS_RDONLY),
#ifdef MS_RELATIME
FLAG_GENERIC(MS_RELATIME),
#endif
FLAG_GENERIC(MS_REMOUNT),
FLAG_GENERIC(MS_SYNCHRONOUS),
FLAG_END,
};
UNUSED static struct flags umount2_flags[] = {
#ifdef MNT_FORCE
FLAG_GENERIC(MNT_FORCE),
#endif
#ifdef MNT_DETACH
FLAG_GENERIC(MNT_DETACH),
#endif
#ifdef MNT_EXPIRE
FLAG_GENERIC(MNT_EXPIRE),
#endif
FLAG_END,
};
UNUSED static struct flags mmap_prot_flags[] = {
FLAG_GENERIC(PROT_NONE),
FLAG_GENERIC(PROT_EXEC),
FLAG_GENERIC(PROT_READ),
FLAG_GENERIC(PROT_WRITE),
FLAG_END,
};
UNUSED static struct flags mmap_flags[] = {
FLAG_TARGET(MAP_SHARED),
FLAG_TARGET(MAP_PRIVATE),
FLAG_TARGET(MAP_ANONYMOUS),
FLAG_TARGET(MAP_DENYWRITE),
FLAG_TARGET(MAP_FIXED),
FLAG_TARGET(MAP_GROWSDOWN),
#ifdef MAP_LOCKED
FLAG_TARGET(MAP_LOCKED),
#endif
#ifdef MAP_NONBLOCK
FLAG_TARGET(MAP_NONBLOCK),
#endif
FLAG_TARGET(MAP_NORESERVE),
#ifdef MAP_POPULATE
FLAG_TARGET(MAP_POPULATE),
#endif
FLAG_END,
};
UNUSED static struct flags fcntl_flags[] = {
FLAG_TARGET(F_DUPFD),
FLAG_TARGET(F_GETFD),
FLAG_TARGET(F_SETFD),
FLAG_TARGET(F_GETFL),
FLAG_TARGET(F_SETFL),
FLAG_TARGET(F_GETLK),
FLAG_TARGET(F_SETLK),
FLAG_TARGET(F_SETLKW),
FLAG_END,
};
/*
* print_xxx utility functions. These are used to print syscall
* parameters in certain format. All of these have parameter
* named 'last'. This parameter is used to add comma to output
* when last == 0.
*/
static const char *
get_comma(int last)
{
return ((last) ? "" : ",");
}
static void
print_flags(const struct flags *f, abi_long tflags, int last)
{
const char *sep = "";
int flags;
int n;
flags = (int)tswap32(tflags);
if ((flags == 0) && (f->f_value == 0)) {
gemu_log("%s%s", f->f_string, get_comma(last));
return;
}
for (n = 0; f->f_string != NULL; f++) {
if ((f->f_value != 0) && ((flags & f->f_value) == f->f_value)) {
gemu_log("%s%s", sep, f->f_string);
flags &= ~f->f_value;
sep = "|";
n++;
}
}
if (n > 0) {
/* print rest of the flags as numeric */
if (flags != 0) {
gemu_log("%s%#x%s", sep, flags, get_comma(last));
} else {
gemu_log("%s", get_comma(last));
}
} else {
/* no string version of flags found, print them in hex then */
gemu_log("%#x%s", flags, get_comma(last));
}
}
static void
print_at_dirfd(abi_long tdirfd, int last)
{
int dirfd = tswap32(tdirfd);
#ifdef AT_FDCWD
if (dirfd == AT_FDCWD) {
gemu_log("AT_FDCWD%s", get_comma(last));
return;
}
#endif
gemu_log("%d%s", dirfd, get_comma(last));
}
static void
print_file_mode(abi_long tmode, int last)
{
const char *sep = "";
const struct flags *m;
mode_t mode = (mode_t)tswap32(tmode);
for (m = &mode_flags[0]; m->f_string != NULL; m++) {
if ((m->f_value & mode) == m->f_value) {
gemu_log("%s%s", m->f_string, sep);
sep = "|";
mode &= ~m->f_value;
break;
}
}
mode &= ~S_IFMT;
/* print rest of the mode as octal */
if (mode != 0)
gemu_log("%s%#o", sep, mode);
gemu_log("%s", get_comma(last));
}
static void
print_open_flags(abi_long tflags, int last)
{
int flags = tswap32(tflags);
print_flags(open_access_flags, flags & TARGET_O_ACCMODE, 1);
flags &= ~TARGET_O_ACCMODE;
if (flags == 0) {
gemu_log("%s", get_comma(last));
return;
}
gemu_log("|");
print_flags(open_flags, flags, last);
}
static void
print_syscall_prologue(const struct syscallname *sc)
{
gemu_log("%s(", sc->name);
}
/*ARGSUSED*/
static void
print_syscall_epilogue(const struct syscallname *sc)
{
(void)sc;
gemu_log(")");
}
static void
print_string(abi_long addr, int last)
{
char *s;
if ((s = lock_user_string(addr)) != NULL) {
gemu_log("\"%s\"%s", s, get_comma(last));
unlock_user(s, addr, 0);
} else {
/* can't get string out of it, so print it as pointer */
print_pointer(addr, last);
}
}
/*
* Prints out raw parameter using given format. Caller needs
* to do byte swapping if needed.
*/
static void
print_raw_param(const char *fmt, abi_long param, int last)
{
char format[64];
(void) snprintf(format, sizeof (format), "%s%s", fmt, get_comma(last));
gemu_log(format, param);
}
static void
print_pointer(abi_long p, int last)
{
if (p == 0)
gemu_log("NULL%s", get_comma(last));
else
gemu_log("0x" TARGET_ABI_FMT_lx "%s", p, get_comma(last));
}
/*
* Reads 32-bit (int) number from guest address space from
* address 'addr' and prints it.
*/
static void
print_number(abi_long addr, int last)
{
if (addr == 0) {
gemu_log("NULL%s", get_comma(last));
} else {
int num;
get_user_s32(num, addr);
gemu_log("[%d]%s", num, get_comma(last));
}
}
static void
print_timeval(abi_ulong tv_addr, int last)
{
if( tv_addr ) {
struct target_timeval *tv;
tv = lock_user(VERIFY_READ, tv_addr, sizeof(*tv), 1);
if (!tv)
return;
gemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}%s",
tv->tv_sec, tv->tv_usec, get_comma(last));
unlock_user(tv, tv_addr, 0);
} else
gemu_log("NULL%s", get_comma(last));
}
#undef UNUSED
#ifdef TARGET_NR_accept
static void
print_accept(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_raw_param("%d", tswap32(arg0), 0);
print_pointer(arg1, 0);
print_number(arg2, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_access
static void
print_access(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_flags(access_flags, arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_brk
static void
print_brk(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_pointer(arg0, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_chdir
static void
print_chdir(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_chmod
static void
print_chmod(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_file_mode(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_creat
static void
print_creat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_file_mode(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_execv
static void
print_execv(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_raw_param("0x" TARGET_ABI_FMT_lx, tswapl(arg1), 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_faccessat
static void
print_faccessat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_flags(access_flags, arg2, 0);
print_flags(at_file_flags, arg3, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_fchmodat
static void
print_fchmodat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_file_mode(arg2, 0);
print_flags(at_file_flags, arg3, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_fchownat
static void
print_fchownat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
#ifdef USE_UID16
print_raw_param("%d", tswap16(arg2), 0);
print_raw_param("%d", tswap16(arg3), 0);
#else
print_raw_param("%d", tswap32(arg2), 0);
print_raw_param("%d", tswap32(arg3), 0);
#endif
print_flags(at_file_flags, arg4, 1);
print_syscall_epilogue(name);
}
#endif
#if defined(TARGET_NR_fcntl) || defined(TARGET_NR_fcntl64)
static void
print_fcntl(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_raw_param("%d", tswap32(arg0), 0);
print_flags(fcntl_flags, arg1, 0);
/*
* TODO: check flags and print following argument only
* when needed.
*/
print_pointer(arg2, 1);
print_syscall_epilogue(name);
}
#define print_fcntl64 print_fcntl
#endif
#ifdef TARGET_NR_futimesat
static void
print_futimesat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_timeval(arg2, 0);
print_timeval(arg2 + sizeof (struct target_timeval), 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_link
static void
print_link(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_string(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_linkat
static void
print_linkat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_at_dirfd(arg2, 0);
print_string(arg3, 0);
print_flags(at_file_flags, arg4, 1);
print_syscall_epilogue(name);
}
#endif
#if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) || \
defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64)
static void
print_stat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_pointer(arg1, 1);
print_syscall_epilogue(name);
}
#define print_lstat print_stat
#define print_stat64 print_stat
#define print_lstat64 print_stat
#endif
#if defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64)
static void
print_fstat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_raw_param("%d", tswap32(arg0), 0);
print_pointer(arg1, 1);
print_syscall_epilogue(name);
}
#define print_fstat64 print_fstat
#endif
#ifdef TARGET_NR_mkdir
static void
print_mkdir(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_file_mode(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mkdirat
static void
print_mkdirat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_file_mode(arg2, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mknod
static void
print_mknod(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
int hasdev = (tswapl(arg1) & (S_IFCHR|S_IFBLK));
print_syscall_prologue(name);
print_string(arg0, 0);
print_file_mode(arg1, (hasdev == 0));
if (hasdev) {
print_raw_param("makedev(%d", major(tswapl(arg2)), 0);
print_raw_param("%d)", minor(tswapl(arg2)), 1);
}
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mknodat
static void
print_mknodat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
int hasdev = (tswapl(arg2) & (S_IFCHR|S_IFBLK));
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_file_mode(arg2, (hasdev == 0));
if (hasdev) {
print_raw_param("makedev(%d", major(tswapl(arg3)), 0);
print_raw_param("%d)", minor(tswapl(arg3)), 1);
}
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mq_open
static void
print_mq_open(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
int is_creat = (tswapl(arg1) & TARGET_O_CREAT);
print_syscall_prologue(name);
print_string(arg0, 0);
print_open_flags(arg1, (is_creat == 0));
if (is_creat) {
print_file_mode(arg2, 0);
print_pointer(arg3, 1);
}
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_open
static void
print_open(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
int is_creat = (tswap32(arg1) & TARGET_O_CREAT);
print_syscall_prologue(name);
print_string(arg0, 0);
print_open_flags(arg1, (is_creat == 0));
if (is_creat)
print_file_mode(arg2, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_openat
static void
print_openat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
int is_creat = (tswap32(arg2) & TARGET_O_CREAT);
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_open_flags(arg2, (is_creat == 0));
if (is_creat)
print_file_mode(arg3, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mq_unlink
static void
print_mq_unlink(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 1);
print_syscall_epilogue(name);
}
#endif
#if defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)
static void
print_fstatat64(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_pointer(arg2, 0);
print_flags(at_file_flags, arg3, 1);
print_syscall_epilogue(name);
}
#define print_newfstatat print_fstatat64
#endif
#ifdef TARGET_NR_readlink
static void
print_readlink(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_pointer(arg1, 0);
print_raw_param("%u", tswapl(arg2), 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_readlinkat
static void
print_readlinkat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_pointer(arg2, 0);
print_raw_param("%u", tswapl(arg3), 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_rename
static void
print_rename(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_string(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_renameat
static void
print_renameat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_at_dirfd(arg2, 0);
print_string(arg3, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_statfs
static void
print_statfs(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_pointer(arg1, 1);
print_syscall_epilogue(name);
}
#define print_statfs64 print_statfs
#endif
#ifdef TARGET_NR_symlink
static void
print_symlink(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_string(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_symlinkat
static void
print_symlinkat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_at_dirfd(arg1, 0);
print_string(arg2, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mount
static void
print_mount(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_string(arg1, 0);
print_string(arg2, 0);
print_flags(mount_flags, arg3, 0);
print_pointer(arg4, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_umount
static void
print_umount(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_umount2
static void
print_umount2(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_flags(umount2_flags, arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_unlink
static void
print_unlink(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_unlinkat
static void
print_unlinkat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_flags(unlinkat_flags, arg2, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_utime
static void
print_utime(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_pointer(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_utimes
static void
print_utimes(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_string(arg0, 0);
print_pointer(arg1, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_utimensat
static void
print_utimensat(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_at_dirfd(arg0, 0);
print_string(arg1, 0);
print_pointer(arg2, 0);
print_flags(at_file_flags, arg3, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_mmap
static void
print_mmap(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_pointer(arg0, 0);
print_raw_param("%d", tswapl(arg1), 0);
print_flags(mmap_prot_flags, arg2, 0);
print_flags(mmap_flags, arg3, 0);
print_raw_param("%d", tswapl(arg4), 0);
print_raw_param("%#x", tswapl(arg5), 1);
print_syscall_epilogue(name);
}
#define print_mmap2 print_mmap
#endif
#ifdef TARGET_NR_mprotect
static void
print_mprotect(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_pointer(arg0, 0);
print_raw_param("%d", tswapl(arg1), 0);
print_flags(mmap_prot_flags, arg2, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_munmap
static void
print_munmap(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_pointer(arg0, 0);
print_raw_param("%d", tswapl(arg1), 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_futex
static void print_futex_op(abi_long tflag, int last)
{
#define print_op(val) \
if( cmd == val ) { \
gemu_log(#val); \
return; \
}
int cmd = (int)tswap32(tflag);
#ifdef FUTEX_PRIVATE_FLAG
if (cmd & FUTEX_PRIVATE_FLAG) {
gemu_log("FUTEX_PRIVATE_FLAG|");
cmd &= ~FUTEX_PRIVATE_FLAG;
}
#endif
print_op(FUTEX_WAIT)
print_op(FUTEX_WAKE)
print_op(FUTEX_FD)
print_op(FUTEX_REQUEUE)
print_op(FUTEX_CMP_REQUEUE)
print_op(FUTEX_WAKE_OP)
print_op(FUTEX_LOCK_PI)
print_op(FUTEX_UNLOCK_PI)
print_op(FUTEX_TRYLOCK_PI)
#ifdef FUTEX_WAIT_BITSET
print_op(FUTEX_WAIT_BITSET)
#endif
#ifdef FUTEX_WAKE_BITSET
print_op(FUTEX_WAKE_BITSET)
#endif
/* unknown values */
gemu_log("%d",cmd);
}
static void
print_futex(const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_pointer(arg0, 0);
print_futex_op(arg1, 0);
print_raw_param(",%d", tswapl(arg2), 0);
print_pointer(arg3, 0); /* struct timespec */
print_pointer(arg4, 0);
print_raw_param("%d", tswapl(arg4), 1);
print_syscall_epilogue(name);
}
#endif
/*
* An array of all of the syscalls we know about
*/
static const struct syscallname scnames[] = {
#include "strace.list"
};
static int nsyscalls = ARRAY_SIZE(scnames);
/*
* The public interface to this module.
*/
void
print_syscall(int num,
abi_long arg1, abi_long arg2, abi_long arg3,
abi_long arg4, abi_long arg5, abi_long arg6)
{
int i;
const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")";
gemu_log("%d ", getpid() );
for(i=0;i<nsyscalls;i++)
if( scnames[i].nr == num ) {
if( scnames[i].call != NULL ) {
scnames[i].call(&scnames[i],arg1,arg2,arg3,arg4,arg5,arg6);
} else {
/* XXX: this format system is broken because it uses
host types and host pointers for strings */
if( scnames[i].format != NULL )
format = scnames[i].format;
gemu_log(format,scnames[i].name, arg1,arg2,arg3,arg4,arg5,arg6);
}
return;
}
gemu_log("Unknown syscall %d\n", num);
}
void
print_syscall_ret(int num, abi_long ret)
{
int i;
for(i=0;i<nsyscalls;i++)
if( scnames[i].nr == num ) {
if( scnames[i].result != NULL ) {
scnames[i].result(&scnames[i],ret);
} else {
if( ret < 0 ) {
gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret, target_strerror(-ret));
} else {
gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret);
}
}
break;
}
}
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