* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
+ * Copyright (c) 1999-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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.
- *
- * $Id$
*/
#include "defs.h"
-#include <fcntl.h>
-#include <sys/file.h>
-#ifdef LINUX
-#include <inttypes.h>
-#endif
-#ifdef HAVE_SYS_EPOLL_H
-#include <sys/epoll.h>
-#endif
-#ifdef HAVE_LIBAIO_H
-#include <libaio.h>
-#endif
-
-#if HAVE_LONG_LONG_OFF_T
-/*
- * Hacks for systems that have a long long off_t
- */
-#define flock64 flock /* Horrid hack */
-#define printflock printflock64 /* Horrider hack */
-#endif
-
-
-static const struct xlat fcntlcmds[] = {
- { F_DUPFD, "F_DUPFD" },
- { F_GETFD, "F_GETFD" },
- { F_SETFD, "F_SETFD" },
- { F_GETFL, "F_GETFL" },
- { F_SETFL, "F_SETFL" },
- { F_GETLK, "F_GETLK" },
- { F_SETLK, "F_SETLK" },
- { F_SETLKW, "F_SETLKW" },
- { F_GETOWN, "F_GETOWN" },
- { F_SETOWN, "F_SETOWN" },
-#ifdef F_RSETLK
- { F_RSETLK, "F_RSETLK" },
-#endif
-#ifdef F_RSETLKW
- { F_RSETLKW, "F_RSETLKW" },
-#endif
-#ifdef F_RGETLK
- { F_RGETLK, "F_RGETLK" },
-#endif
-#ifdef F_CNVT
- { F_CNVT, "F_CNVT" },
-#endif
-#ifdef F_SETSIG
- { F_SETSIG, "F_SETSIG" },
-#endif
-#ifdef F_GETSIG
- { F_GETSIG, "F_GETSIG" },
-#endif
-#ifdef F_CHKFL
- { F_CHKFL, "F_CHKFL" },
-#endif
-#ifdef F_DUP2FD
- { F_DUP2FD, "F_DUP2FD" },
-#endif
-#ifdef F_ALLOCSP
- { F_ALLOCSP, "F_ALLOCSP" },
-#endif
-#ifdef F_ISSTREAM
- { F_ISSTREAM, "F_ISSTREAM" },
-#endif
-#ifdef F_PRIV
- { F_PRIV, "F_PRIV" },
-#endif
-#ifdef F_NPRIV
- { F_NPRIV, "F_NPRIV" },
-#endif
-#ifdef F_QUOTACL
- { F_QUOTACL, "F_QUOTACL" },
-#endif
-#ifdef F_BLOCKS
- { F_BLOCKS, "F_BLOCKS" },
-#endif
-#ifdef F_BLKSIZE
- { F_BLKSIZE, "F_BLKSIZE" },
-#endif
-#ifdef F_GETOWN
- { F_GETOWN, "F_GETOWN" },
-#endif
-#ifdef F_SETOWN
- { F_SETOWN, "F_SETOWN" },
-#endif
-#ifdef F_REVOKE
- { F_REVOKE, "F_REVOKE" },
-#endif
-#ifdef F_SETLK
- { F_SETLK, "F_SETLK" },
-#endif
-#ifdef F_SETLKW
- { F_SETLKW, "F_SETLKW" },
-#endif
-#ifdef F_FREESP
- { F_FREESP, "F_FREESP" },
-#endif
-#ifdef F_GETLK
- { F_GETLK, "F_GETLK" },
-#endif
-#ifdef F_SETLK64
- { F_SETLK64, "F_SETLK64" },
-#endif
-#ifdef F_SETLKW64
- { F_SETLKW64, "F_SETLKW64" },
-#endif
-#ifdef F_FREESP64
- { F_FREESP64, "F_FREESP64" },
-#endif
-#ifdef F_GETLK64
- { F_GETLK64, "F_GETLK64" },
-#endif
-#ifdef F_SHARE
- { F_SHARE, "F_SHARE" },
-#endif
-#ifdef F_UNSHARE
- { F_UNSHARE, "F_UNSHARE" },
-#endif
-#ifdef F_SETLEASE
- { F_SETLEASE, "F_SETLEASE" },
-#endif
-#ifdef F_GETLEASE
- { F_GETLEASE, "F_GETLEASE" },
-#endif
-#ifdef F_NOTIFY
- { F_NOTIFY, "F_NOTIFY" },
-#endif
-#ifdef F_DUPFD_CLOEXEC
- { F_DUPFD_CLOEXEC,"F_DUPFD_CLOEXEC"},
-#endif
- { 0, NULL },
-};
-
-static const struct xlat fdflags[] = {
-#ifdef FD_CLOEXEC
- { FD_CLOEXEC, "FD_CLOEXEC" },
-#endif
- { 0, NULL },
-};
-
-#ifdef LOCK_SH
-
-static const struct xlat flockcmds[] = {
- { LOCK_SH, "LOCK_SH" },
- { LOCK_EX, "LOCK_EX" },
- { LOCK_NB, "LOCK_NB" },
- { LOCK_UN, "LOCK_UN" },
- { 0, NULL },
-};
-
-#endif /* LOCK_SH */
-
-static const struct xlat lockfcmds[] = {
- { F_RDLCK, "F_RDLCK" },
- { F_WRLCK, "F_WRLCK" },
- { F_UNLCK, "F_UNLCK" },
-#ifdef F_EXLCK
- { F_EXLCK, "F_EXLCK" },
-#endif
-#ifdef F_SHLCK
- { F_SHLCK, "F_SHLCK" },
-#endif
- { 0, NULL },
-};
-
-#ifdef F_NOTIFY
-static const struct xlat notifyflags[] = {
-#ifdef DN_ACCESS
- { DN_ACCESS, "DN_ACCESS" },
-#endif
-#ifdef DN_MODIFY
- { DN_MODIFY, "DN_MODIFY" },
-#endif
-#ifdef DN_CREATE
- { DN_CREATE, "DN_CREATE" },
-#endif
-#ifdef DN_DELETE
- { DN_DELETE, "DN_DELETE" },
-#endif
-#ifdef DN_RENAME
- { DN_RENAME, "DN_RENAME" },
-#endif
-#ifdef DN_ATTRIB
- { DN_ATTRIB, "DN_ATTRIB" },
-#endif
-#ifdef DN_MULTISHOT
- { DN_MULTISHOT, "DN_MULTISHOT" },
-#endif
- { 0, NULL },
-};
-#endif
-
-static const struct xlat whence[] = {
- { SEEK_SET, "SEEK_SET" },
- { SEEK_CUR, "SEEK_CUR" },
- { SEEK_END, "SEEK_END" },
- { 0, NULL },
-};
-
-#ifndef HAVE_LONG_LONG_OFF_T
-/* fcntl/lockf */
-static void
-printflock(struct tcb *tcp, long addr, int getlk)
-{
- struct flock fl;
-
-#if SUPPORTED_PERSONALITIES > 1
- if (personality_wordsize[current_personality] != sizeof(fl.l_start)) {
- if (personality_wordsize[current_personality] == 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(tcp, addr, &fl32) < 0) {
- tprints("{...}");
- 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> }",
- personality_wordsize[current_personality]);
- return;
- }
- } else
-#endif
- {
- if (umove(tcp, addr, &fl) < 0) {
- tprints("{...}");
- return;
- }
- }
- tprints("{type=");
- printxval(lockfcmds, fl.l_type, "F_???");
- tprints(", whence=");
- printxval(whence, fl.l_whence, "SEEK_???");
- tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
- if (getlk)
- tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
- else
- tprints("}");
-}
-#endif
-
-#if _LFS64_LARGEFILE || HAVE_LONG_LONG_OFF_T
-/* fcntl/lockf */
-static void
-printflock64(struct tcb *tcp, long addr, int getlk)
-{
- struct flock64 fl;
-
- if (umove(tcp, addr, &fl) < 0) {
- tprints("{...}");
- return;
- }
- tprints("{type=");
- printxval(lockfcmds, fl.l_type, "F_???");
- tprints(", whence=");
- printxval(whence, 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
-
-int
-sys_fcntl(struct tcb *tcp)
+SYS_FUNC(close)
{
- 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:
-#ifdef F_FREESP
- case F_FREESP:
-#endif
- tprints(", ");
- printflock(tcp, tcp->u_arg[2], 0);
- break;
-#if _LFS64_LARGEFILE
-#ifdef F_FREESP64
- case F_FREESP64:
-#endif
- /* Linux glibc defines SETLK64 as SETLK,
- even though the kernel has different values - as does Solaris. */
-#if defined(F_SETLK64) && F_SETLK64 + 0 != F_SETLK
- case F_SETLK64:
-#endif
-#if defined(F_SETLKW64) && F_SETLKW64 + 0 != F_SETLKW
- case F_SETLKW64:
-#endif
- tprints(", ");
- printflock64(tcp, tcp->u_arg[2], 0);
- break;
-#endif
-#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 _LFS64_LARGEFILE
-#if defined(F_GETLK64) && F_GETLK64+0 != F_GETLK
- case F_GETLK64:
-#endif
- 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
+ printfd(tcp, tcp->u_arg[0]);
-int
-sys_flock(struct tcb *tcp)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printflags(flockcmds, tcp->u_arg[1], "LOCK_???");
- }
- return 0;
+ return RVAL_DECODED;
}
-#endif /* LOCK_SH */
-int
-sys_close(struct tcb *tcp)
+SYS_FUNC(dup)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- }
- return 0;
-}
+ printfd(tcp, tcp->u_arg[0]);
-int
-sys_dup(struct tcb *tcp)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- }
- return 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 0;
+
+ return RVAL_DECODED | RVAL_FD;
}
-int
-sys_dup2(struct tcb *tcp)
+SYS_FUNC(dup2)
{
return do_dup2(tcp, -1);
}
-#ifdef LINUX
-int
-sys_dup3(struct tcb *tcp)
+SYS_FUNC(dup3)
{
return do_dup2(tcp, 2);
}
-#endif
-
-#if defined(ALPHA) || defined(FREEBSD) || defined(SUNOS4)
-int
-sys_getdtablesize(struct tcb *tcp)
-{
- return 0;
-}
-#endif /* ALPHA || FREEBSD || SUNOS4 */
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;
- unsigned nfds, fdsize;
- fd_set *fds;
+ int nfds, fdsize;
+ fd_set *fds = NULL;
const char *sep;
- long arg;
+ kernel_ulong_t addr;
+
+ /* 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 (nfds < 0)
+ nfds = 0;
- fdsize = args[0];
/* Beware of select(2^31-1, NULL, NULL, NULL) and similar... */
- if (args[0] > 1024*1024)
- fdsize = 1024*1024;
- if (args[0] < 0)
- fdsize = 0;
- fdsize = (((fdsize + 7) / 8) + sizeof(long)-1) & -sizeof(long);
+ if (nfds > 1024*1024)
+ nfds = 1024*1024;
+
+ /*
+ * We had bugs a-la "while (j < args[0])" and "umoven(args[0])" below.
+ * Instead of args[0], use nfds for fd count, fdsize for array lengths.
+ */
+ fdsize = (((nfds + 7) / 8) + current_wordsize-1) & -current_wordsize;
if (entering(tcp)) {
- fds = malloc(fdsize);
- if (!fds)
- die_out_of_memory();
- nfds = args[0];
- tprintf("%d", nfds);
+ tprintf("%d", (int) args[0]);
+
+ if (verbose(tcp) && fdsize > 0)
+ fds = malloc(fdsize);
for (i = 0; i < 3; i++) {
- arg = args[i+1];
- if (arg == 0) {
- tprints(", NULL");
- continue;
- }
- if (!verbose(tcp)) {
- tprintf(", %#lx", arg);
+ addr = args[i+1];
+ tprints(", ");
+ if (!fds) {
+ printaddr(addr);
continue;
}
- if (umoven(tcp, arg, fdsize, (char *) fds) < 0) {
- tprints(", [?]");
+ if (umoven_or_printaddr(tcp, addr, fdsize, fds))
continue;
- }
- tprints(", [");
- for (j = 0, sep = ""; j < nfds; j++) {
- if (FD_ISSET(j, fds)) {
- tprints(sep);
- printfd(tcp, j);
- sep = " ";
- }
+ tprints("[");
+ for (j = 0, sep = "";; j++) {
+ j = next_set_bit(fds, j, nfds);
+ if (j < 0)
+ break;
+ tprints(sep);
+ printfd(tcp, j);
+ sep = " ";
}
tprints("]");
}
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))
- const char *sep;
+ int ready_fds;
if (syserror(tcp))
return 0;
- nfds = tcp->u_rval;
- if (nfds == 0) {
+ ready_fds = tcp->u_rval;
+ if (ready_fds == 0) {
tcp->auxstr = "Timeout";
return RVAL_STR;
}
fds = malloc(fdsize);
- if (!fds)
- die_out_of_memory();
outptr = outstr;
sep = "";
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < 3 && ready_fds > 0; i++) {
int first = 1;
- arg = args[i+1];
- if (!arg || umoven(tcp, arg, fdsize, (char *) fds) < 0)
+ addr = args[i+1];
+ if (!addr || !fds || umoven(tcp, addr, fdsize, fds) < 0)
continue;
- for (j = 0; j < args[0]; j++) {
- if (FD_ISSET(j, fds)) {
- /* +2 chars needed at the end: ']',NUL */
- if (outptr < end_outstr - (sizeof(", except [") + sizeof(int)*3 + 2)) {
- if (first) {
- outptr += sprintf(outptr, "%s%s [%u",
- sep,
- i == 0 ? "in" : i == 1 ? "out" : "except",
- j
- );
- first = 0;
- sep = ", ";
- }
- else {
- outptr += sprintf(outptr, " %u", j);
- }
+ for (j = 0;; j++) {
+ j = next_set_bit(fds, j, nfds);
+ if (j < 0)
+ break;
+ /* +2 chars needed at the end: ']',NUL */
+ if (outptr < end_outstr - (sizeof(", except [") + sizeof(int)*3 + 2)) {
+ if (first) {
+ outptr += sprintf(outptr, "%s%s [%u",
+ sep,
+ i == 0 ? "in" : i == 1 ? "out" : "except",
+ j
+ );
+ first = 0;
+ sep = ", ";
+ }
+ else {
+ outptr += sprintf(outptr, " %u", j);
}
- nfds--;
}
+ if (--ready_fds == 0)
+ break;
}
if (outptr != outstr)
*outptr++ = ']';
- if (nfds == 0)
- break;
}
free(fds);
-#ifdef LINUX
/* This contains no useful information on SunOS. */
if (args[4]) {
- if (outptr < end_outstr - 128) {
- outptr += sprintf(outptr, "%sleft ", sep);
- outptr = sprinttv(tcp, args[4], bitness, outptr);
+ 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);
}
}
-#endif /* LINUX */
*outptr = '\0';
tcp->auxstr = outstr;
return RVAL_STR;
return 0;
}
-#ifdef LINUX
-
-int
-sys_oldselect(struct tcb *tcp)
-{
- long args[5];
-
- if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
- tprints("[...]");
- return 0;
- }
- return decode_select(tcp, args, BITNESS_CURRENT);
-}
-
-#ifdef ALPHA
-int
-sys_osf_select(struct tcb *tcp)
+SYS_FUNC(oldselect)
{
- long *args = tcp->u_arg;
- return decode_select(tcp, args, BITNESS_32);
-}
-#endif
-
-static const struct xlat epollctls[] = {
-#ifdef EPOLL_CTL_ADD
- { EPOLL_CTL_ADD, "EPOLL_CTL_ADD" },
-#endif
-#ifdef EPOLL_CTL_MOD
- { EPOLL_CTL_MOD, "EPOLL_CTL_MOD" },
-#endif
-#ifdef EPOLL_CTL_DEL
- { EPOLL_CTL_DEL, "EPOLL_CTL_DEL" },
-#endif
- { 0, NULL }
-};
-
-static const struct xlat epollevents[] = {
-#ifdef EPOLLIN
- { EPOLLIN, "EPOLLIN" },
-#endif
-#ifdef EPOLLPRI
- { EPOLLPRI, "EPOLLPRI" },
-#endif
-#ifdef EPOLLOUT
- { EPOLLOUT, "EPOLLOUT" },
-#endif
-#ifdef EPOLLRDNORM
- { EPOLLRDNORM, "EPOLLRDNORM" },
-#endif
-#ifdef EPOLLRDBAND
- { EPOLLRDBAND, "EPOLLRDBAND" },
-#endif
-#ifdef EPOLLWRNORM
- { EPOLLWRNORM, "EPOLLWRNORM" },
-#endif
-#ifdef EPOLLWRBAND
- { EPOLLWRBAND, "EPOLLWRBAND" },
-#endif
-#ifdef EPOLLMSG
- { EPOLLMSG, "EPOLLMSG" },
-#endif
-#ifdef EPOLLERR
- { EPOLLERR, "EPOLLERR" },
-#endif
-#ifdef EPOLLHUP
- { EPOLLHUP, "EPOLLHUP" },
-#endif
-#ifdef EPOLLRDHUP
- { EPOLLRDHUP, "EPOLLRDHUP" },
-#endif
-#ifdef EPOLLONESHOT
- { EPOLLONESHOT, "EPOLLONESHOT" },
-#endif
-#ifdef EPOLLET
- { EPOLLET, "EPOLLET" },
-#endif
- { 0, NULL }
-};
-
-int
-sys_epoll_create(struct tcb *tcp)
-{
- if (entering(tcp))
- tprintf("%ld", tcp->u_arg[0]);
- return 0;
-}
-
-int
-sys_epoll_create1(struct tcb *tcp)
-{
- if (entering(tcp))
- printflags(open_mode_flags, tcp->u_arg[0], "O_???");
- return 0;
-}
+ kernel_ulong_t select_args[5];
+ unsigned int oldselect_args[5];
-#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
-
-int
-sys_epoll_ctl(struct tcb *tcp)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???");
- tprints(", ");
- printfd(tcp, tcp->u_arg[2]);
- tprints(", ");
- if (tcp->u_arg[3] == 0)
- tprints("NULL");
- else {
-#ifdef HAVE_SYS_EPOLL_H
- struct epoll_event ev;
- if (umove(tcp, tcp->u_arg[3], &ev) == 0)
- print_epoll_event(&ev);
- else
-#endif
- tprints("{...}");
+ if (sizeof(*select_args) == sizeof(*oldselect_args)) {
+ if (umove_or_printaddr(tcp, tcp->u_arg[0], &select_args)) {
+ return 0;
}
- }
- return 0;
-}
-
-static void
-epoll_wait_common(struct tcb *tcp)
-{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
} else {
- if (syserror(tcp))
- tprintf("%lx", tcp->u_arg[1]);
- else if (tcp->u_rval == 0)
- tprints("{}");
- else {
-#ifdef HAVE_SYS_EPOLL_H
- struct epoll_event ev, *start, *cur, *end;
- int failed = 0;
+ unsigned int i;
- tprints("{");
- start = (struct epoll_event *) tcp->u_arg[1];
- end = start + tcp->u_rval;
- for (cur = start; cur < end; ++cur) {
- if (cur > start)
- tprints(", ");
- if (umove(tcp, (long) cur, &ev) == 0)
- print_epoll_event(&ev);
- else {
- tprints("?");
- failed = 1;
- break;
- }
- }
- tprints("}");
- if (failed)
- tprintf(" %#lx", (long) start);
-#else
- tprints("{...}");
-#endif
+ if (umove_or_printaddr(tcp, tcp->u_arg[0], &oldselect_args)) {
+ return 0;
}
- tprintf(", %ld, %ld", tcp->u_arg[2], tcp->u_arg[3]);
- }
-}
-
-int
-sys_epoll_wait(struct tcb *tcp)
-{
- epoll_wait_common(tcp);
- return 0;
-}
-
-int
-sys_epoll_pwait(struct tcb *tcp)
-{
- epoll_wait_common(tcp);
- if (exiting(tcp)) {
- tprints(", ");
- print_sigset(tcp, tcp->u_arg[4], 0);
- }
- return 0;
-}
-int
-sys_io_setup(struct tcb *tcp)
-{
- if (entering(tcp))
- tprintf("%ld, ", tcp->u_arg[0]);
- else {
- if (syserror(tcp))
- tprintf("0x%0lx", tcp->u_arg[1]);
- else {
- unsigned long user_id;
- if (umove(tcp, tcp->u_arg[1], &user_id) == 0)
- tprintf("{%lu}", user_id);
- else
- tprints("{...}");
+ for (i = 0; i < 5; ++i) {
+ select_args[i] = oldselect_args[i];
}
}
- return 0;
-}
-int
-sys_io_destroy(struct tcb *tcp)
-{
- if (entering(tcp))
- tprintf("%lu", tcp->u_arg[0]);
- return 0;
+ return decode_select(tcp, select_args, print_timeval, sprint_timeval);
}
-#ifdef HAVE_LIBAIO_H
-
-enum iocb_sub {
- SUB_NONE, SUB_COMMON, SUB_POLL, SUB_VECTOR
-};
-
-static const char *
-iocb_cmd_lookup(unsigned cmd, enum iocb_sub *sub)
+#ifdef ALPHA
+SYS_FUNC(osf_select)
{
- static char buf[sizeof("%u /* SUB_??? */") + sizeof(int)*3];
- static const struct {
- const char *name;
- enum iocb_sub sub;
- } cmds[] = {
- { "pread", SUB_COMMON },
- { "pwrite", SUB_COMMON },
- { "fsync", SUB_NONE },
- { "fdsync", SUB_NONE },
- { "op4", SUB_NONE },
- { "poll", SUB_POLL },
- { "noop", SUB_NONE },
- { "preadv", SUB_VECTOR },
- { "pwritev", SUB_VECTOR },
- };
-
- if (cmd < ARRAY_SIZE(cmds)) {
- *sub = cmds[cmd].sub;
- return cmds[cmd].name;
- }
- *sub = SUB_NONE;
- sprintf(buf, "%u /* SUB_??? */", cmd);
- return buf;
+ return decode_select(tcp, tcp->u_arg, print_timeval32, sprint_timeval32);
}
-
-/* Not defined in libaio.h */
-#ifndef IOCB_RESFD
-# define IOCB_RESFD (1 << 0)
#endif
-static void
-print_common_flags(struct iocb *iocb)
+SYS_FUNC(select)
{
- if (iocb->u.c.flags & IOCB_RESFD)
- tprintf("resfd=%d, ", iocb->u.c.resfd);
- if (iocb->u.c.flags & ~IOCB_RESFD)
- tprintf("flags=%x, ", iocb->u.c.flags);
+ return decode_select(tcp, tcp->u_arg, print_timeval, sprint_timeval);
}
-#endif /* HAVE_LIBAIO_H */
-
-int
-sys_io_submit(struct tcb *tcp)
-{
- long nr;
- if (entering(tcp)) {
- tprintf("%lu, %ld, ", tcp->u_arg[0], tcp->u_arg[1]);
- nr = tcp->u_arg[1];
- /* and if nr is negative? */
- if (nr == 0)
- tprints("{}");
- else {
-#ifdef HAVE_LIBAIO_H
- long i;
- struct iocb *iocbp, **iocbs = (void *)tcp->u_arg[2];
-
- for (i = 0; i < nr; i++, iocbs++) {
- enum iocb_sub sub;
- struct iocb iocb;
- if (i == 0)
- tprints("{");
- else
- tprints(", ");
-
- if (umove(tcp, (unsigned long)iocbs, &iocbp) ||
- umove(tcp, (unsigned long)iocbp, &iocb)) {
- tprints("{...}");
- continue;
- }
- tprints("{");
- if (iocb.data)
- tprintf("data:%p, ", iocb.data);
- if (iocb.key)
- tprintf("key:%u, ", iocb.key);
- tprintf("%s, ", iocb_cmd_lookup(iocb.aio_lio_opcode, &sub));
- if (iocb.aio_reqprio)
- tprintf("reqprio:%d, ", iocb.aio_reqprio);
- tprintf("filedes:%d", iocb.aio_fildes);
- switch (sub) {
- case SUB_COMMON:
- if (iocb.aio_lio_opcode == IO_CMD_PWRITE) {
- tprints(", str:");
- printstr(tcp, (unsigned long)iocb.u.c.buf,
- iocb.u.c.nbytes);
- } else {
- tprintf(", buf:%p", iocb.u.c.buf);
- }
- tprintf(", nbytes:%lu, offset:%llx",
- iocb.u.c.nbytes,
- iocb.u.c.offset);
- print_common_flags(&iocb);
- break;
- case SUB_VECTOR:
- tprintf(", %llx, ", iocb.u.v.offset);
- print_common_flags(&iocb);
- tprint_iov(tcp, iocb.u.v.nr,
- (unsigned long)iocb.u.v.vec,
- iocb.aio_lio_opcode == IO_CMD_PWRITEV);
- break;
- case SUB_POLL:
- tprintf(", %x", iocb.u.poll.events);
- break;
- case SUB_NONE:
- break;
- }
- tprints("}");
- }
- if (i)
- tprints("}");
-#else
-#warning "libaio-devel is not available => no io_submit decoding"
- tprintf("%#lx", tcp->u_arg[2]);
-#endif
- }
- }
- return 0;
-}
-
-int
-sys_io_cancel(struct tcb *tcp)
-{
- if (entering(tcp)) {
-#ifdef HAVE_LIBAIO_H
- struct iocb iocb;
-#endif
- tprintf("%lu, ", tcp->u_arg[0]);
-#ifdef HAVE_LIBAIO_H
- if (umove(tcp, tcp->u_arg[1], &iocb) == 0) {
- tprintf("{%p, %u, %hu, %hu, %d}, ",
- iocb.data, iocb.key,
- iocb.aio_lio_opcode,
- iocb.aio_reqprio, iocb.aio_fildes);
- } else
-#endif
- tprints("{...}, ");
- } else {
- if (tcp->u_rval < 0)
- tprints("{...}");
- else {
-#ifdef HAVE_LIBAIO_H
- struct io_event event;
- if (umove(tcp, tcp->u_arg[2], &event) == 0)
- tprintf("{%p, %p, %ld, %ld}",
- event.data, event.obj,
- event.res, event.res2);
- else
-#endif
- tprints("{...}");
+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)
+{
+#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;
+#endif /* !current_klongsize */
+ return umoven_or_printaddr(tcp, addr, n * sizeof(*ptr), ptr);
}
-int
-sys_io_getevents(struct tcb *tcp)
+SYS_FUNC(pselect6)
{
+ int rc = decode_select(tcp, tcp->u_arg, print_timespec, sprint_timespec);
if (entering(tcp)) {
- tprintf("%ld, %ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1],
- tcp->u_arg[2]);
- } else {
- if (tcp->u_rval == 0) {
- tprints("{}");
- } else {
-#ifdef HAVE_LIBAIO_H
- struct io_event *events = (void *)tcp->u_arg[3];
- long i, nr = tcp->u_rval;
-
- for (i = 0; i < nr; i++, events++) {
- struct io_event event;
-
- if (i == 0)
- tprints("{");
- else
- tprints(", ");
+ kernel_ulong_t data[2];
- if (umove(tcp, (unsigned long)events, &event) != 0) {
- tprints("{...}");
- continue;
- }
- tprintf("{%p, %p, %ld, %ld}", event.data,
- event.obj, event.res, event.res2);
- }
- tprints("}, ");
-#else
- tprints("{...}");
-#endif
+ tprints(", ");
+ if (!umove_kulong_array_or_printaddr(tcp, tcp->u_arg[5],
+ data, ARRAY_SIZE(data))) {
+ tprints("{");
+ /* NB: kernel requires data[1] == NSIG_BYTES */
+ print_sigset_addr_len(tcp, data[0], data[1]);
+ tprintf(", %" PRI_klu "}", data[1]);
}
-
- print_timespec(tcp, tcp->u_arg[4]);
}
- return 0;
-}
-#endif /* LINUX */
-int
-sys_select(struct tcb *tcp)
-{
- return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
-}
-
-#ifdef LINUX
-int
-sys_pselect6(struct tcb *tcp)
-{
- int rc = decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
- if (entering(tcp)) {
- struct {
- void *ss;
- unsigned long len;
- } data;
- if (umove(tcp, tcp->u_arg[5], &data) < 0)
- tprintf(", %#lx", tcp->u_arg[5]);
- else {
- tprints(", {");
- if (data.len < sizeof(long))
- tprintf("%#lx", (long)data.ss);
- else
- print_sigset(tcp, (long)data.ss, 0);
- 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_???");
- }
- }
- return 0;
-}
-
-int
-sys_eventfd(struct tcb *tcp)
-{
- return do_eventfd(tcp, -1);
-}
-
-int
-sys_eventfd2(struct tcb *tcp)
-{
- return do_eventfd(tcp, 1);
-}
-#endif
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