*/
#include "defs.h"
-#include <fcntl.h>
-#include <sys/file.h>
-#ifdef HAVE_SYS_EPOLL_H
-# include <sys/epoll.h>
-#endif
-#ifdef HAVE_LINUX_PERF_EVENT_H
-# include <linux/perf_event.h>
-#endif
-
-#include "xlat/fcntlcmds.h"
-#include "xlat/fdflags.h"
-#include "xlat/flockcmds.h"
-#include "xlat/lockfcmds.h"
-#include "xlat/notifyflags.h"
-#include "xlat/perf_event_open_flags.h"
-
-/*
- * Assume that F_SETLK64, F_SETLKW64, and F_GETLK64 are either defined
- * or not defined altogether.
- */
-#if defined(F_SETLK64) && F_SETLK64 + 0 != F_SETLK
-# define USE_PRINTFLOCK64 1
-#else
-# define USE_PRINTFLOCK64 0
-#endif
-
-#if USE_PRINTFLOCK64
-
-# ifndef HAVE_STRUCT_FLOCK64
-struct flock64 {
- short int l_type, l_whence;
- int64_t l_start, l_len;
- int l_pid;
-};
-# endif
-
-static void
-printflock64(struct tcb *tcp, long addr, int getlk)
-{
- struct flock64 fl;
-
- if (umove_or_printaddr(tcp, addr, &fl))
- return;
- tprints("{type=");
- printxval(lockfcmds, fl.l_type, "F_???");
- tprints(", whence=");
- printxval(whence_codes, fl.l_whence, "SEEK_???");
- tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len);
- if (getlk)
- tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
- else
- tprints("}");
-}
-#endif /* USE_PRINTFLOCK64 */
-
-static void
-printflock(struct tcb *tcp, long addr, int getlk)
-{
- struct flock fl;
-
-#if SUPPORTED_PERSONALITIES > 1
- if (
-# if SIZEOF_OFF_T > SIZEOF_LONG
- current_personality != DEFAULT_PERSONALITY &&
-# endif
- current_wordsize != sizeof(fl.l_start)) {
- if (current_wordsize == 4) {
- /* 32-bit x86 app on x86_64 and similar cases */
- struct {
- short int l_type;
- short int l_whence;
- int32_t l_start; /* off_t */
- int32_t l_len; /* off_t */
- int32_t l_pid; /* pid_t */
- } fl32;
- if (umove_or_printaddr(tcp, addr, &fl32))
- return;
- fl.l_type = fl32.l_type;
- fl.l_whence = fl32.l_whence;
- fl.l_start = fl32.l_start;
- fl.l_len = fl32.l_len;
- fl.l_pid = fl32.l_pid;
- } else {
- /* let people know we have a problem here */
- tprintf("<decode error: unsupported wordsize %d>",
- current_wordsize);
- return;
- }
- } else
-#endif
- if (umove_or_printaddr(tcp, addr, &fl))
- return;
- tprints("{type=");
- printxval(lockfcmds, fl.l_type, "F_???");
- tprints(", whence=");
- printxval(whence_codes, fl.l_whence, "SEEK_???");
-#if SIZEOF_OFF_T > SIZEOF_LONG
- tprintf(", start=%lld, len=%lld", fl.l_start, fl.l_len);
-#else
- tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
-#endif
- if (getlk)
- tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
- else
- tprints("}");
-}
-
-SYS_FUNC(fcntl)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printxval(fcntlcmds, tcp->u_arg[1], "F_???");
- switch (tcp->u_arg[1]) {
- case F_SETFD:
- tprints(", ");
- printflags(fdflags, tcp->u_arg[2], "FD_???");
- break;
- case F_SETOWN: case F_DUPFD:
-#ifdef F_DUPFD_CLOEXEC
- case F_DUPFD_CLOEXEC:
-#endif
- tprintf(", %ld", tcp->u_arg[2]);
- break;
- case F_SETFL:
- tprints(", ");
- tprint_open_modes(tcp->u_arg[2]);
- break;
- case F_SETLK: case F_SETLKW:
- tprints(", ");
- printflock(tcp, tcp->u_arg[2], 0);
- break;
-#if USE_PRINTFLOCK64
- case F_SETLK64: case F_SETLKW64:
- tprints(", ");
- printflock64(tcp, tcp->u_arg[2], 0);
- break;
-#endif /* USE_PRINTFLOCK64 */
-#ifdef F_NOTIFY
- case F_NOTIFY:
- tprints(", ");
- printflags(notifyflags, tcp->u_arg[2], "DN_???");
- break;
-#endif
-#ifdef F_SETLEASE
- case F_SETLEASE:
- tprints(", ");
- printxval(lockfcmds, tcp->u_arg[2], "F_???");
- break;
-#endif
- }
- }
- else {
- switch (tcp->u_arg[1]) {
- case F_DUPFD:
-#ifdef F_DUPFD_CLOEXEC
- case F_DUPFD_CLOEXEC:
-#endif
- case F_SETFD: case F_SETFL:
- case F_SETLK: case F_SETLKW:
- case F_SETOWN: case F_GETOWN:
-#ifdef F_NOTIFY
- case F_NOTIFY:
-#endif
-#ifdef F_SETLEASE
- case F_SETLEASE:
-#endif
- break;
- case F_GETFD:
- if (syserror(tcp) || tcp->u_rval == 0)
- return 0;
- tcp->auxstr = sprintflags("flags ", fdflags, tcp->u_rval);
- return RVAL_HEX|RVAL_STR;
- case F_GETFL:
- if (syserror(tcp))
- return 0;
- tcp->auxstr = sprint_open_modes(tcp->u_rval);
- return RVAL_HEX|RVAL_STR;
- case F_GETLK:
- tprints(", ");
- printflock(tcp, tcp->u_arg[2], 1);
- break;
-#if USE_PRINTFLOCK64
- case F_GETLK64:
- tprints(", ");
- printflock64(tcp, tcp->u_arg[2], 1);
- break;
-#endif
-#ifdef F_GETLEASE
- case F_GETLEASE:
- if (syserror(tcp))
- return 0;
- tcp->auxstr = xlookup(lockfcmds, tcp->u_rval);
- return RVAL_HEX|RVAL_STR;
-#endif
- default:
- tprintf(", %#lx", tcp->u_arg[2]);
- break;
- }
- }
- return 0;
-}
-
-#ifdef LOCK_SH
-
-SYS_FUNC(flock)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printflags(flockcmds, tcp->u_arg[1], "LOCK_???");
- }
- return 0;
-}
-#endif /* LOCK_SH */
SYS_FUNC(close)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- }
- return 0;
+ printfd(tcp, tcp->u_arg[0]);
+
+ return RVAL_DECODED;
}
SYS_FUNC(dup)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- }
- return RVAL_FD;
+ printfd(tcp, tcp->u_arg[0]);
+
+ return RVAL_DECODED | RVAL_FD;
}
static int
do_dup2(struct tcb *tcp, int flags_arg)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printfd(tcp, tcp->u_arg[1]);
+ if (flags_arg >= 0) {
tprints(", ");
- printfd(tcp, tcp->u_arg[1]);
- if (flags_arg >= 0) {
- tprints(", ");
- printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
- }
+ printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
}
- return RVAL_FD;
+
+ return RVAL_DECODED | RVAL_FD;
}
SYS_FUNC(dup2)
return do_dup2(tcp, 2);
}
-#if defined(ALPHA)
-SYS_FUNC(getdtablesize)
-{
- return 0;
-}
-#endif
-
static int
-decode_select(struct tcb *tcp, long *args, enum bitness_t bitness)
+decode_select(struct tcb *const tcp, const kernel_ulong_t *const args,
+ void (*const print_tv_ts) (struct tcb *, kernel_ulong_t),
+ const char * (*const sprint_tv_ts) (struct tcb *, kernel_ulong_t))
{
int i, j;
int nfds, fdsize;
fd_set *fds = NULL;
const char *sep;
- long arg;
+ kernel_ulong_t addr;
- /* Kernel truncates arg[0] to int, we do the same. */
+ /* Kernel truncates args[0] to int, we do the same. */
nfds = (int) args[0];
/* Kernel rejects negative nfds, so we don't parse it either. */
if (verbose(tcp) && fdsize > 0)
fds = malloc(fdsize);
for (i = 0; i < 3; i++) {
- arg = args[i+1];
+ addr = args[i+1];
tprints(", ");
if (!fds) {
- printaddr(arg);
+ printaddr(addr);
continue;
}
- if (umoven_or_printaddr(tcp, arg, fdsize, fds))
+ if (umoven_or_printaddr(tcp, addr, fdsize, fds))
continue;
tprints("[");
for (j = 0, sep = "";; j++) {
}
free(fds);
tprints(", ");
- printtv_bitness(tcp, args[4], bitness, 0);
- }
- else {
+ print_tv_ts(tcp, args[4]);
+ } else {
static char outstr[1024];
char *outptr;
#define end_outstr (outstr + sizeof(outstr))
for (i = 0; i < 3 && ready_fds > 0; i++) {
int first = 1;
- arg = args[i+1];
- if (!arg || !fds || umoven(tcp, arg, fdsize, fds) < 0)
+ addr = args[i+1];
+ if (!addr || !fds || umoven(tcp, addr, fdsize, fds) < 0)
continue;
for (j = 0;; j++) {
j = next_set_bit(fds, j, nfds);
free(fds);
/* This contains no useful information on SunOS. */
if (args[4]) {
- if (outptr < end_outstr - (10 + TIMEVAL_TEXT_BUFSIZE)) {
- outptr += sprintf(outptr, "%sleft ", sep);
- outptr = sprinttv(outptr, tcp, args[4], bitness, /*special:*/ 0);
+ const char *str = sprint_tv_ts(tcp, args[4]);
+ if (outptr + sizeof("left ") + strlen(sep) + strlen(str) < end_outstr) {
+ outptr += sprintf(outptr, "%sleft %s", sep, str);
}
}
*outptr = '\0';
SYS_FUNC(oldselect)
{
- long args[5];
-
- if (umove(tcp, tcp->u_arg[0], &args) < 0) {
- printaddr(tcp->u_arg[0]);
- return 0;
- }
- return decode_select(tcp, args, BITNESS_CURRENT);
-}
+ kernel_ulong_t select_args[5];
+ unsigned int oldselect_args[5];
-#ifdef ALPHA
-SYS_FUNC(osf_select)
-{
- return decode_select(tcp, tcp->u_arg, BITNESS_32);
-}
-#endif
-
-#include "xlat/epollctls.h"
-#include "xlat/epollevents.h"
-#include "xlat/epollflags.h"
-
-/* Not aliased to printargs_ld: we want it to have a distinct address */
-SYS_FUNC(epoll_create)
-{
- return printargs_ld(tcp);
-}
-
-SYS_FUNC(epoll_create1)
-{
- if (entering(tcp))
- printflags(epollflags, tcp->u_arg[0], "EPOLL_???");
- return 0;
-}
-
-#ifdef HAVE_SYS_EPOLL_H
-static void
-print_epoll_event(struct epoll_event *ev)
-{
- tprints("{");
- printflags(epollevents, ev->events, "EPOLL???");
- /* We cannot know what format the program uses, so print u32 and u64
- which will cover every value. */
- tprintf(", {u32=%" PRIu32 ", u64=%" PRIu64 "}}",
- ev->data.u32, ev->data.u64);
-}
-#endif
-
-SYS_FUNC(epoll_ctl)
-{
- if (entering(tcp)) {
- struct epoll_event ev;
-
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???");
- tprints(", ");
- printfd(tcp, tcp->u_arg[2]);
- tprints(", ");
-#ifdef HAVE_SYS_EPOLL_H
- if (EPOLL_CTL_DEL == tcp->u_arg[1])
- printaddr(tcp->u_arg[3]);
- else if (!umove_or_printaddr(tcp, tcp->u_arg[3], &ev))
- print_epoll_event(&ev);
-#else
- printaddr(tcp->u_arg[3]);
-#endif
- }
- return 0;
-}
+ if (sizeof(*select_args) == sizeof(*oldselect_args)) {
+ if (umove_or_printaddr(tcp, tcp->u_arg[0], &select_args)) {
+ return 0;
+ }
+ } else {
+ unsigned int i;
-static void
-print_epoll_event_array(struct tcb *tcp, const long addr, const long len)
-{
-#ifdef HAVE_SYS_EPOLL_H
- struct epoll_event ev, *start, *cur, *end;
+ if (umove_or_printaddr(tcp, tcp->u_arg[0], &oldselect_args)) {
+ return 0;
+ }
- if (!len) {
- tprints("[]");
- return;
+ for (i = 0; i < 5; ++i) {
+ select_args[i] = oldselect_args[i];
+ }
}
- if (umove_or_printaddr(tcp, addr, &ev))
- return;
-
- tprints("[");
- print_epoll_event(&ev);
-
- start = (struct epoll_event *) addr;
- end = start + len;
- for (cur = start + 1; cur < end; ++cur) {
- tprints(", ");
- if (umove_or_printaddr(tcp, (long) cur, &ev))
- break;
- print_epoll_event(&ev);
- }
- tprints("]");
-#else
- printaddr(addr);
-#endif
+ return decode_select(tcp, select_args, print_timeval, sprint_timeval);
}
-static void
-epoll_wait_common(struct tcb *tcp)
+#ifdef ALPHA
+SYS_FUNC(osf_select)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- } else {
- print_epoll_event_array(tcp, tcp->u_arg[1], tcp->u_rval);
- tprintf(", %d, %d", (int) tcp->u_arg[2], (int) tcp->u_arg[3]);
- }
+ return decode_select(tcp, tcp->u_arg, print_timeval32, sprint_timeval32);
}
+#endif
-SYS_FUNC(epoll_wait)
+SYS_FUNC(select)
{
- epoll_wait_common(tcp);
- return 0;
+ return decode_select(tcp, tcp->u_arg, print_timeval, sprint_timeval);
}
-SYS_FUNC(epoll_pwait)
+static int
+umove_kulong_array_or_printaddr(struct tcb *const tcp, const kernel_ulong_t addr,
+ kernel_ulong_t *const ptr, const size_t n)
{
- epoll_wait_common(tcp);
- if (exiting(tcp)) {
- tprints(", ");
- /* NB: kernel requires arg[5] == NSIG / 8 */
- print_sigset_addr_len(tcp, tcp->u_arg[4], tcp->u_arg[5]);
- tprintf(", %lu", tcp->u_arg[5]);
+#ifndef current_klongsize
+ if (current_klongsize < sizeof(*ptr)) {
+ uint32_t ptr32[n];
+ int r = umove_or_printaddr(tcp, addr, &ptr32);
+ if (!r) {
+ size_t i;
+
+ for (i = 0; i < n; ++i)
+ ptr[i] = ptr32[i];
+ }
+ return r;
}
- return 0;
-}
-
-SYS_FUNC(select)
-{
- return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
+#endif /* !current_klongsize */
+ return umoven_or_printaddr(tcp, addr, n * sizeof(*ptr), ptr);
}
SYS_FUNC(pselect6)
{
- int rc = decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
+ int rc = decode_select(tcp, tcp->u_arg, print_timespec, sprint_timespec);
if (entering(tcp)) {
- long r;
- struct {
- unsigned long ptr;
- unsigned long len;
- } data;
+ kernel_ulong_t data[2];
tprints(", ");
-#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
- if (current_wordsize == 4) {
- struct {
- uint32_t ptr;
- uint32_t len;
- } data32;
- r = umove_or_printaddr(tcp, tcp->u_arg[5], &data32);
- data.ptr = data32.ptr;
- data.len = data32.len;
- } else
-#endif
- r = umove_or_printaddr(tcp, tcp->u_arg[5], &data);
- if (r == 0) {
+ if (!umove_kulong_array_or_printaddr(tcp, tcp->u_arg[5],
+ data, ARRAY_SIZE(data))) {
tprints("{");
- /* NB: kernel requires data.len == NSIG / 8 */
- print_sigset_addr_len(tcp, data.ptr, data.len);
- tprintf(", %lu}", data.len);
- }
- }
- return rc;
-}
-
-static int
-do_eventfd(struct tcb *tcp, int flags_arg)
-{
- if (entering(tcp)) {
- tprintf("%lu", tcp->u_arg[0]);
- if (flags_arg >= 0) {
- tprints(", ");
- printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
+ /* NB: kernel requires data[1] == NSIG_BYTES */
+ print_sigset_addr_len(tcp, data[0], data[1]);
+ tprintf(", %" PRI_klu "}", data[1]);
}
}
- return 0;
-}
-SYS_FUNC(eventfd)
-{
- return do_eventfd(tcp, -1);
-}
-
-SYS_FUNC(eventfd2)
-{
- return do_eventfd(tcp, 1);
-}
-
-SYS_FUNC(perf_event_open)
-{
- if (entering(tcp)) {
- printaddr(tcp->u_arg[0]);
- tprintf(", %d, %d, %d, ",
- (int) tcp->u_arg[1],
- (int) tcp->u_arg[2],
- (int) tcp->u_arg[3]);
- printflags(perf_event_open_flags, tcp->u_arg[4],
- "PERF_FLAG_???");
- }
- return 0;
+ return rc;
}
projects / strace / blobdiff