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strace/time.c
Dmitry V. Levin 07c878a9b5 timerfd, timerfd_create: mark return code with RVAL_FD flag 
* time.c (sys_timerfd, sys_timerfd_create): Set RVAL_FD flag
in the return code.
2015-08-03 09:09:00 +00:00

674 lines
15 KiB
C
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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include <fcntl.h>
#include <signal.h>
#include <linux/version.h>
#include <sys/timex.h>
#ifndef UTIME_NOW
#define UTIME_NOW ((1l << 30) - 1l)
#endif
#ifndef UTIME_OMIT
#define UTIME_OMIT ((1l << 30) - 2l)
#endif
#if SUPPORTED_PERSONALITIES > 1
# if defined X86_64 || defined X32
# define current_time_t_is_compat (current_personality == 1)
# else
# define current_time_t_is_compat (current_wordsize == 4)
# endif
#else
# define current_time_t_is_compat 0
#endif
struct timeval32
{
u_int32_t tv_sec, tv_usec;
};
static void
tprint_timeval32(struct tcb *tcp, const struct timeval32 *tv)
{
tprintf("{%u, %u}", tv->tv_sec, tv->tv_usec);
}
static void
tprint_timeval(struct tcb *tcp, const struct timeval *tv)
{
tprintf("{%ju, %ju}", (uintmax_t) tv->tv_sec, (uintmax_t) tv->tv_usec);
}
void
printtv_bitness(struct tcb *tcp, long addr, enum bitness_t bitness, int special)
{
char buf[TIMEVAL_TEXT_BUFSIZE];
sprinttv(buf, tcp, addr, bitness, special);
tprints(buf);
}
static char *
do_sprinttv(char *buf, const uintmax_t sec, const uintmax_t usec,
const int special)
{
if (special) {
switch (usec) {
case UTIME_NOW:
return stpcpy(buf, "UTIME_NOW");
case UTIME_OMIT:
return stpcpy(buf, "UTIME_OMIT");
}
}
return buf + sprintf(buf, "{%ju, %ju}", sec, usec);
}
char *
sprinttv(char *buf, struct tcb *tcp, long addr, enum bitness_t bitness, int special)
{
if (addr == 0)
return stpcpy(buf, "NULL");
if (!verbose(tcp) || (exiting(tcp) && syserror(tcp)))
return buf + sprintf(buf, "%#lx", addr);
if (bitness == BITNESS_32 || current_time_t_is_compat)
{
struct timeval32 tv;
if (umove(tcp, addr, &tv) >= 0)
return do_sprinttv(buf, tv.tv_sec, tv.tv_usec, special);
} else {
struct timeval tv;
if (umove(tcp, addr, &tv) >= 0)
return do_sprinttv(buf, tv.tv_sec, tv.tv_usec, special);
}
return buf + sprintf(buf, "%#lx", addr);
}
void
print_timespec(struct tcb *tcp, long addr)
{
char buf[TIMESPEC_TEXT_BUFSIZE];
sprint_timespec(buf, tcp, addr);
tprints(buf);
}
void
sprint_timespec(char *buf, struct tcb *tcp, long addr)
{
if (addr == 0)
strcpy(buf, "NULL");
else if (!verbose(tcp))
sprintf(buf, "%#lx", addr);
else {
int rc;
#if SUPPORTED_PERSONALITIES > 1
if (current_time_t_is_compat) {
struct timeval32 tv;
rc = umove(tcp, addr, &tv);
if (rc >= 0)
sprintf(buf, "{%u, %u}",
tv.tv_sec, tv.tv_usec);
} else
#endif
{
struct timespec ts;
rc = umove(tcp, addr, &ts);
if (rc >= 0)
sprintf(buf, "{%ju, %ju}",
(uintmax_t) ts.tv_sec,
(uintmax_t) ts.tv_nsec);
}
if (rc < 0)
strcpy(buf, "{...}");
}
}
SYS_FUNC(time)
{
if (exiting(tcp)) {
printnum_long(tcp, tcp->u_arg[0], "%ld");
}
return 0;
}
SYS_FUNC(gettimeofday)
{
if (exiting(tcp)) {
printtv(tcp, tcp->u_arg[0]);
tprints(", ");
printtv(tcp, tcp->u_arg[1]);
}
return 0;
}
#ifdef ALPHA
SYS_FUNC(osf_gettimeofday)
{
if (exiting(tcp)) {
printtv_bitness(tcp, tcp->u_arg[0], BITNESS_32, 0);
tprints(", ");
printtv_bitness(tcp, tcp->u_arg[1], BITNESS_32, 0);
}
return 0;
}
#endif
SYS_FUNC(settimeofday)
{
printtv(tcp, tcp->u_arg[0]);
tprints(", ");
printtv(tcp, tcp->u_arg[1]);
return RVAL_DECODED;
}
#ifdef ALPHA
SYS_FUNC(osf_settimeofday)
{
printtv_bitness(tcp, tcp->u_arg[0], BITNESS_32, 0);
tprints(", ");
printtv_bitness(tcp, tcp->u_arg[1], BITNESS_32, 0);
return RVAL_DECODED;
}
#endif
SYS_FUNC(adjtime)
{
if (entering(tcp)) {
printtv(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
printtv(tcp, tcp->u_arg[1]);
}
return 0;
}
SYS_FUNC(nanosleep)
{
if (entering(tcp)) {
print_timespec(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
/* Second (returned) timespec is only significant
* if syscall was interrupted. On success, we print
* only its address, since kernel doesn't modify it,
* and printing the value may show uninitialized data.
*/
switch (tcp->u_error) {
default:
/* Not interrupted (slept entire interval) */
printaddr(tcp->u_arg[1]);
break;
case ERESTARTSYS:
case ERESTARTNOINTR:
case ERESTARTNOHAND:
case ERESTART_RESTARTBLOCK:
/* Interrupted */
print_timespec(tcp, tcp->u_arg[1]);
}
}
return 0;
}
#include "xlat/itimer_which.h"
static void
printitv_bitness(struct tcb *tcp, long addr, enum bitness_t bitness)
{
if (bitness == BITNESS_32 || current_time_t_is_compat) {
struct {
struct timeval32 it_interval, it_value;
} itv;
if (!umove_or_printaddr(tcp, addr, &itv)) {
tprints("{it_interval=");
tprint_timeval32(tcp, &itv.it_interval);
tprints(", it_value=");
tprint_timeval32(tcp, &itv.it_value);
tprints("}");
}
} else {
struct itimerval itv;
if (!umove_or_printaddr(tcp, addr, &itv)) {
tprints("{it_interval=");
tprint_timeval(tcp, &itv.it_interval);
tprints(", it_value=");
tprint_timeval(tcp, &itv.it_value);
tprints("}");
}
}
}
#define printitv(tcp, addr) \
printitv_bitness((tcp), (addr), BITNESS_CURRENT)
SYS_FUNC(getitimer)
{
if (entering(tcp)) {
printxval(itimer_which, tcp->u_arg[0], "ITIMER_???");
tprints(", ");
} else {
printitv(tcp, tcp->u_arg[1]);
}
return 0;
}
#ifdef ALPHA
SYS_FUNC(osf_getitimer)
{
if (entering(tcp)) {
printxval(itimer_which, tcp->u_arg[0], "ITIMER_???");
tprints(", ");
} else {
printitv_bitness(tcp, tcp->u_arg[1], BITNESS_32);
}
return 0;
}
#endif
SYS_FUNC(setitimer)
{
if (entering(tcp)) {
printxval(itimer_which, tcp->u_arg[0], "ITIMER_???");
tprints(", ");
printitv(tcp, tcp->u_arg[1]);
tprints(", ");
} else {
printitv(tcp, tcp->u_arg[2]);
}
return 0;
}
#ifdef ALPHA
SYS_FUNC(osf_setitimer)
{
if (entering(tcp)) {
printxval(itimer_which, tcp->u_arg[0], "ITIMER_???");
tprints(", ");
printitv_bitness(tcp, tcp->u_arg[1], BITNESS_32);
tprints(", ");
} else {
printitv_bitness(tcp, tcp->u_arg[2], BITNESS_32);
}
return 0;
}
#endif
#include "xlat/adjtimex_modes.h"
#include "xlat/adjtimex_status.h"
#include "xlat/adjtimex_state.h"
#if SUPPORTED_PERSONALITIES > 1
static int
tprint_timex32(struct tcb *tcp, long addr)
{
struct {
unsigned int modes;
int offset;
int freq;
int maxerror;
int esterror;
int status;
int constant;
int precision;
int tolerance;
struct timeval32 time;
int tick;
int ppsfreq;
int jitter;
int shift;
int stabil;
int jitcnt;
int calcnt;
int errcnt;
int stbcnt;
} tx;
if (umove_or_printaddr(tcp, addr, &tx))
return -1;
tprints("{modes=");
printflags(adjtimex_modes, tx.modes, "ADJ_???");
tprintf(", offset=%d, freq=%d, maxerror=%d, ",
tx.offset, tx.freq, tx.maxerror);
tprintf("esterror=%u, status=", tx.esterror);
printflags(adjtimex_status, tx.status, "STA_???");
tprintf(", constant=%d, precision=%u, ",
tx.constant, tx.precision);
tprintf("tolerance=%d, time=", tx.tolerance);
tprint_timeval32(tcp, &tx.time);
tprintf(", tick=%d, ppsfreq=%d, jitter=%d",
tx.tick, tx.ppsfreq, tx.jitter);
tprintf(", shift=%d, stabil=%d, jitcnt=%d",
tx.shift, tx.stabil, tx.jitcnt);
tprintf(", calcnt=%d, errcnt=%d, stbcnt=%d",
tx.calcnt, tx.errcnt, tx.stbcnt);
tprints("}");
return 0;
}
#endif /* SUPPORTED_PERSONALITIES > 1 */
static int
tprint_timex(struct tcb *tcp, long addr)
{
struct timex tx;
#if SUPPORTED_PERSONALITIES > 1
if (current_time_t_is_compat)
return tprint_timex32(tcp, addr);
#endif
if (umove_or_printaddr(tcp, addr, &tx))
return -1;
tprints("{modes=");
printflags(adjtimex_modes, tx.modes, "ADJ_???");
tprintf(", offset=%jd, freq=%jd, maxerror=%ju, esterror=%ju, status=",
(intmax_t) tx.offset, (intmax_t) tx.freq,
(uintmax_t) tx.maxerror, (uintmax_t) tx.esterror);
printflags(adjtimex_status, tx.status, "STA_???");
tprintf(", constant=%jd, precision=%ju, tolerance=%jd, time=",
(intmax_t) tx.constant, (uintmax_t) tx.precision,
(intmax_t) tx.tolerance);
tprint_timeval(tcp, &tx.time);
tprintf(", tick=%jd, ppsfreq=%jd, jitter=%jd",
(intmax_t) tx.tick, (intmax_t) tx.ppsfreq, (intmax_t) tx.jitter);
tprintf(", shift=%d, stabil=%jd, jitcnt=%jd",
tx.shift, (intmax_t) tx.stabil, (intmax_t) tx.jitcnt);
tprintf(", calcnt=%jd, errcnt=%jd, stbcnt=%jd",
(intmax_t) tx.calcnt, (intmax_t) tx.errcnt, (intmax_t) tx.stbcnt);
tprints("}");
return 0;
}
static int
do_adjtimex(struct tcb *tcp, long addr)
{
if (tprint_timex(tcp, addr))
return 0;
tcp->auxstr = xlookup(adjtimex_state, tcp->u_rval);
if (tcp->auxstr)
return RVAL_STR;
return 0;
}
SYS_FUNC(adjtimex)
{
if (exiting(tcp))
return do_adjtimex(tcp, tcp->u_arg[0]);
return 0;
}
#include "xlat/clockflags.h"
#include "xlat/clocknames.h"
static void
printclockname(int clockid)
{
#ifdef CLOCKID_TO_FD
# include "xlat/cpuclocknames.h"
if (clockid < 0) {
if ((clockid & CLOCKFD_MASK) == CLOCKFD)
tprintf("FD_TO_CLOCKID(%d)", CLOCKID_TO_FD(clockid));
else {
if(CPUCLOCK_PERTHREAD(clockid))
tprintf("MAKE_THREAD_CPUCLOCK(%d,", CPUCLOCK_PID(clockid));
else
tprintf("MAKE_PROCESS_CPUCLOCK(%d,", CPUCLOCK_PID(clockid));
printxval(cpuclocknames, clockid & CLOCKFD_MASK, "CPUCLOCK_???");
tprints(")");
}
}
else
#endif
printxval(clocknames, clockid, "CLOCK_???");
}
SYS_FUNC(clock_settime)
{
printclockname(tcp->u_arg[0]);
tprints(", ");
printtv(tcp, tcp->u_arg[1]);
return RVAL_DECODED;
}
SYS_FUNC(clock_gettime)
{
if (entering(tcp)) {
printclockname(tcp->u_arg[0]);
tprints(", ");
} else {
printtv(tcp, tcp->u_arg[1]);
}
return 0;
}
SYS_FUNC(clock_nanosleep)
{
if (entering(tcp)) {
printclockname(tcp->u_arg[0]);
tprints(", ");
printflags(clockflags, tcp->u_arg[1], "TIMER_???");
tprints(", ");
printtv(tcp, tcp->u_arg[2]);
tprints(", ");
} else {
printtv(tcp, tcp->u_arg[3]);
}
return 0;
}
SYS_FUNC(clock_adjtime)
{
if (exiting(tcp))
return do_adjtimex(tcp, tcp->u_arg[1]);
printclockname(tcp->u_arg[0]);
tprints(", ");
return 0;
}
#ifndef SIGEV_THREAD_ID
# define SIGEV_THREAD_ID 4
#endif
#include "xlat/sigev_value.h"
#if SUPPORTED_PERSONALITIES > 1
static void
printsigevent32(struct tcb *tcp, long arg)
{
struct {
int sigev_value;
int sigev_signo;
int sigev_notify;
union {
int tid;
struct {
int function, attribute;
} thread;
} un;
} sev;
if (!umove_or_printaddr(tcp, arg, &sev)) {
tprintf("{%#x, ", sev.sigev_value);
if (sev.sigev_notify == SIGEV_SIGNAL)
tprintf("%s, ", signame(sev.sigev_signo));
else
tprintf("%u, ", sev.sigev_signo);
printxval(sigev_value, sev.sigev_notify, "SIGEV_???");
tprints(", ");
if (sev.sigev_notify == SIGEV_THREAD_ID)
tprintf("{%d}", sev.un.tid);
else if (sev.sigev_notify == SIGEV_THREAD)
tprintf("{%#x, %#x}",
sev.un.thread.function,
sev.un.thread.attribute);
else
tprints("{...}");
tprints("}");
}
}
#endif
void
printsigevent(struct tcb *tcp, long arg)
{
struct sigevent sev;
#if SUPPORTED_PERSONALITIES > 1
if (current_wordsize == 4) {
printsigevent32(tcp, arg);
return;
}
#endif
if (!umove_or_printaddr(tcp, arg, &sev)) {
tprintf("{%p, ", sev.sigev_value.sival_ptr);
if (sev.sigev_notify == SIGEV_SIGNAL)
tprintf("%s, ", signame(sev.sigev_signo));
else
tprintf("%u, ", sev.sigev_signo);
printxval(sigev_value, sev.sigev_notify, "SIGEV_???");
tprints(", ");
if (sev.sigev_notify == SIGEV_THREAD_ID)
#if defined(HAVE_STRUCT_SIGEVENT__SIGEV_UN__PAD)
/* _pad[0] is the _tid field which might not be
present in the userlevel definition of the
struct. */
tprintf("{%d}", sev._sigev_un._pad[0]);
#elif defined(HAVE_STRUCT_SIGEVENT___PAD)
tprintf("{%d}", sev.__pad[0]);
#else
# warning unfamiliar struct sigevent => incomplete SIGEV_THREAD_ID decoding
tprints("{...}");
#endif
else if (sev.sigev_notify == SIGEV_THREAD)
tprintf("{%p, %p}", sev.sigev_notify_function,
sev.sigev_notify_attributes);
else
tprints("{...}");
tprints("}");
}
}
SYS_FUNC(timer_create)
{
if (entering(tcp)) {
printclockname(tcp->u_arg[0]);
tprints(", ");
printsigevent(tcp, tcp->u_arg[1]);
tprints(", ");
} else {
printnum_int(tcp, tcp->u_arg[2], "%d");
}
return 0;
}
SYS_FUNC(timer_settime)
{
if (entering(tcp)) {
tprintf("%d, ", (int) tcp->u_arg[0]);
printflags(clockflags, tcp->u_arg[1], "TIMER_???");
tprints(", ");
printitv(tcp, tcp->u_arg[2]);
tprints(", ");
} else {
printitv(tcp, tcp->u_arg[3]);
}
return 0;
}
SYS_FUNC(timer_gettime)
{
if (entering(tcp)) {
tprintf("%d, ", (int) tcp->u_arg[0]);
} else {
printitv(tcp, tcp->u_arg[1]);
}
return 0;
}
#include "xlat/timerfdflags.h"
SYS_FUNC(timerfd)
{
/* It does not matter that the kernel uses itimerspec. */
tprintf("%ld, ", tcp->u_arg[0]);
printclockname(tcp->u_arg[0]);
tprints(", ");
printflags(timerfdflags, tcp->u_arg[2], "TFD_???");
tprints(", ");
printitv(tcp, tcp->u_arg[3]);
return RVAL_DECODED | RVAL_FD;
}
SYS_FUNC(timerfd_create)
{
printclockname(tcp->u_arg[0]);
tprints(", ");
printflags(timerfdflags, tcp->u_arg[1], "TFD_???");
return RVAL_DECODED | RVAL_FD;
}
SYS_FUNC(timerfd_settime)
{
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printflags(timerfdflags, tcp->u_arg[1], "TFD_???");
tprints(", ");
printitv(tcp, tcp->u_arg[2]);
tprints(", ");
printitv(tcp, tcp->u_arg[3]);
return RVAL_DECODED;
}
SYS_FUNC(timerfd_gettime)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
printitv(tcp, tcp->u_arg[1]);
}
return 0;
}
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