* 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>
+ * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* 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 HAVE_SYS_EPOLL_H
+# include <sys/epoll.h>
+#endif
+#ifdef HAVE_LINUX_PERF_EVENT_H
+# include <linux/perf_event.h>
+#endif
-static struct xlat fcntlcmds[] = {
+static const struct xlat fcntlcmds[] = {
{ F_DUPFD, "F_DUPFD" },
{ F_GETFD, "F_GETFD" },
{ F_SETFD, "F_SETFD" },
#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 struct xlat fdflags[] = {
+static const struct xlat fdflags[] = {
#ifdef FD_CLOEXEC
{ FD_CLOEXEC, "FD_CLOEXEC" },
#endif
#ifdef LOCK_SH
-static struct xlat flockcmds[] = {
+static const struct xlat flockcmds[] = {
{ LOCK_SH, "LOCK_SH" },
{ LOCK_EX, "LOCK_EX" },
{ LOCK_NB, "LOCK_NB" },
#endif /* LOCK_SH */
-static struct xlat lockfcmds[] = {
+static const struct xlat lockfcmds[] = {
{ F_RDLCK, "F_RDLCK" },
{ F_WRLCK, "F_WRLCK" },
{ F_UNLCK, "F_UNLCK" },
{ 0, NULL },
};
-static struct xlat whence[] = {
- { SEEK_SET, "SEEK_SET" },
- { SEEK_CUR, "SEEK_CUR" },
- { SEEK_END, "SEEK_END" },
+#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 perf_event_open_flags[] = {
+#ifdef PERF_FLAG_FD_NO_GROUP
+ { PERF_FLAG_FD_NO_GROUP, "PERF_FLAG_FD_NO_GROUP" },
+#endif
+#ifdef PERF_FLAG_FD_OUTPUT
+ { PERF_FLAG_FD_OUTPUT, "PERF_FLAG_FD_OUTPUT" },
+#endif
+#ifdef PERF_FLAG_PID_CGROUP
+ { PERF_FLAG_PID_CGROUP, "PERF_FLAG_PID_CGROUP" },
+#endif
+ { 0, NULL },
+};
+
+#if defined(F_SETLK64) && F_SETLK64 + 0 != F_SETLK
+# define HAVE_F_SETLK64 1
+#else
+# define HAVE_F_SETLK64 0
+#endif
+
+#if defined(F_SETLKW64) && F_SETLKW64 + 0 != F_SETLKW
+# define HAVE_F_SETLKW64 1
+#else
+# define HAVE_F_SETLKW64 0
+#endif
+
+#if defined(F_GETLK64) && F_GETLK64+0 != F_GETLK
+# define HAVE_F_GETLK64 1
+#else
+# define HAVE_F_GETLK64 0
+#endif
+
+#if defined(X32) || defined(F_FREESP64) || \
+ HAVE_F_SETLK64 || HAVE_F_SETLKW64 || HAVE_F_GETLK64
+
+#ifndef HAVE_STRUCT_FLOCK64
+struct flock64 {
+ short int l_type, l_whence;
+ int64_t l_start, l_len;
+ int l_pid;
+};
+#endif
/* fcntl/lockf */
static void
-printflock(tcp, addr, getlk)
-struct tcb *tcp;
-int addr;
-int getlk;
+printflock64(struct tcb *tcp, long addr, int getlk)
{
- struct flock fl;
+ struct flock64 fl;
if (umove(tcp, addr, &fl) < 0) {
- tprintf("{...}");
+ tprints("{...}");
return;
}
- tprintf("{type=");
+ tprints("{type=");
printxval(lockfcmds, fl.l_type, "F_???");
- tprintf(", whence=");
- printxval(whence, fl.l_whence, "SEEK_???");
- tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
+ 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
- tprintf("}");
+ tprints("}");
}
+#endif
-static char *
-sprintflags(xlat, flags)
-struct xlat *xlat;
-int flags;
+/* fcntl/lockf */
+static void
+printflock(struct tcb *tcp, long addr, int getlk)
{
- static char outstr[1024];
- char *sep;
-
- strcpy(outstr, "flags ");
- sep = "";
- for (; xlat->str; xlat++) {
- if ((flags & xlat->val) == xlat->val) {
- sprintf(outstr + strlen(outstr),
- "%s%s", sep, xlat->str);
- sep = "|";
- flags &= ~xlat->val;
+ struct flock fl;
+
+#if SUPPORTED_PERSONALITIES > 1
+# ifdef X32
+ if (current_personality == 0) {
+ printflock64(tcp, addr, getlk);
+ return;
+ }
+# endif
+ if (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(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>",
+ current_wordsize);
+ return;
+ }
+ } else
+#endif
+ {
+ if (umove(tcp, addr, &fl) < 0) {
+ tprints("{...}");
+ return;
}
}
- if (flags)
- sprintf(outstr + strlen(outstr),
- "%s%#x", sep, flags);
- return outstr;
+ tprints("{type=");
+ printxval(lockfcmds, fl.l_type, "F_???");
+ tprints(", whence=");
+ printxval(whence_codes, fl.l_whence, "SEEK_???");
+#ifdef X32
+ 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("}");
}
int
-sys_fcntl(tcp)
-struct tcb *tcp;
+sys_fcntl(struct tcb *tcp)
{
- extern struct xlat openmodes[];
-
if (entering(tcp)) {
- tprintf("%ld, ", tcp->u_arg[0]);
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
printxval(fcntlcmds, tcp->u_arg[1], "F_???");
switch (tcp->u_arg[1]) {
case F_SETFD:
- tprintf(", ");
- if (printflags(fdflags, tcp->u_arg[2]) == 0)
- tprintf("0");
+ 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:
- tprintf(", ");
- if (printflags(openmodes, tcp->u_arg[2] + 1) == 0)
- tprintf("0");
+ tprints(", ");
+ tprint_open_modes(tcp->u_arg[2]);
break;
case F_SETLK: case F_SETLKW:
- tprintf(", ");
+#ifdef F_FREESP
+ case F_FREESP:
+#endif
+ tprints(", ");
printflock(tcp, tcp->u_arg[2], 0);
break;
+#if defined(F_FREESP64) || HAVE_F_SETLK64 || HAVE_F_SETLKW64
+#ifdef F_FREESP64
+ case F_FREESP64:
+#endif
+ /* Linux glibc defines SETLK64 as SETLK,
+ even though the kernel has different values - as does Solaris. */
+#if HAVE_F_SETLK64
+ case F_SETLK64:
+#endif
+#if HAVE_F_SETLKW64
+ case F_SETLKW64:
+#endif
+ tprints(", ");
+ printflock64(tcp, tcp->u_arg[2], 0);
+ break;
+#endif /* defined(F_FREESP64) || HAVE_F_SETLK64 || HAVE_F_SETLKW64 */
+#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 (tcp->u_rval == 0)
+ if (syserror(tcp) || tcp->u_rval == 0)
return 0;
- tcp->auxstr = sprintflags(fdflags, tcp->u_rval);
+ tcp->auxstr = sprintflags("flags ", fdflags, tcp->u_rval);
return RVAL_HEX|RVAL_STR;
case F_GETFL:
- tcp->auxstr = sprintflags(openmodes, tcp->u_rval + 1);
+ if (syserror(tcp))
+ return 0;
+ tcp->auxstr = sprint_open_modes(tcp->u_rval);
return RVAL_HEX|RVAL_STR;
case F_GETLK:
- tprintf(", ");
+ tprints(", ");
printflock(tcp, tcp->u_arg[2], 1);
break;
+#if HAVE_F_GETLK64
+ 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;
#ifdef LOCK_SH
int
-sys_flock(tcp)
-struct tcb *tcp;
+sys_flock(struct tcb *tcp)
{
if (entering(tcp)) {
- tprintf("%ld, ", tcp->u_arg[0]);
- if (!printflags(flockcmds, tcp->u_arg[1]))
- tprintf("LOCK_???");
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printflags(flockcmds, tcp->u_arg[1], "LOCK_???");
}
return 0;
}
#endif /* LOCK_SH */
int
-sys_close(tcp)
-struct tcb *tcp;
+sys_close(struct tcb *tcp)
{
if (entering(tcp)) {
- tprintf("%ld", tcp->u_arg[0]);
+ printfd(tcp, tcp->u_arg[0]);
}
return 0;
}
-int
-sys_dup(tcp)
-struct tcb *tcp;
+static int
+do_dup2(struct tcb *tcp, int flags_arg)
{
if (entering(tcp)) {
- tprintf("%ld", tcp->u_arg[0]);
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printfd(tcp, tcp->u_arg[1]);
+ if (flags_arg >= 0) {
+ tprints(", ");
+ printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
+ }
}
return 0;
}
int
-sys_dup2(tcp)
-struct tcb *tcp;
+sys_dup2(struct tcb *tcp)
{
- if (entering(tcp)) {
- tprintf("%ld, %ld", tcp->u_arg[0], tcp->u_arg[1]);
- }
- return 0;
+ return do_dup2(tcp, -1);
}
int
-sys_getdtablesize(tcp)
-struct tcb *tcp;
+sys_dup3(struct tcb *tcp)
+{
+ return do_dup2(tcp, 2);
+}
+
+#if defined(ALPHA)
+int
+sys_getdtablesize(struct tcb *tcp)
{
return 0;
}
+#endif
static int
-decode_select(tcp, args, bitness)
-struct tcb *tcp;
-long *args;
-int bitness;
+decode_select(struct tcb *tcp, long *args, enum bitness_t bitness)
{
- int i, j, nfds;
- fd_set fds;
- struct timeval tv;
-#ifdef ALPHA
- struct timeval32 {
- unsigned tv_sec;
- unsigned tv_usec;
- } *tv32;
-#endif
- static char outstr[1024];
- char *sep;
+ int i, j;
+ int nfds, fdsize;
+ fd_set *fds;
+ const char *sep;
long arg;
+ /* Kernel truncates arg[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;
+ fds = NULL;
+ }
+ /* Beware of select(2^31-1, NULL, NULL, NULL) and similar... */
+ 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)) {
- nfds = args[0];
- tprintf("%d", nfds);
+ tprintf("%d", (int) args[0]);
+
+ if (fdsize > 0) {
+ fds = malloc(fdsize);
+ if (!fds)
+ die_out_of_memory();
+ }
for (i = 0; i < 3; i++) {
arg = args[i+1];
if (arg == 0) {
- tprintf(", NULL");
+ tprints(", NULL");
continue;
}
- if (!verbose(tcp)) {
+ if (!verbose(tcp) || !fds) {
tprintf(", %#lx", arg);
continue;
}
- if (umove(tcp, arg, &fds) < 0) {
- tprintf(", [?]");
+ if (umoven(tcp, arg, fdsize, (char *) fds) < 0) {
+ tprints(", [?]");
continue;
}
- tprintf(", [");
- for (j = 0, sep = ""; j < nfds; j++) {
- if (FD_ISSET(j, &fds)) {
- tprintf("%s%u", sep, 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 = " ";
}
- tprintf("]");
- }
- if (!args[4])
- tprintf(", NULL");
- else if (!verbose(tcp))
- tprintf(", %#lx", args[4]);
- else if (umove(tcp, args[4], &tv) < 0)
- tprintf(", {...}");
- else {
-#ifdef ALPHA
- if (bitness) {
- tv32=(struct timeval32*)&tv;
- tprintf(", {%u, %u}", tv32->tv_sec, tv32->tv_usec);
- } else
-#endif
- tprintf(", {%lu, %lu}",
- (long) tv.tv_sec, (long) tv.tv_usec);
+ tprints("]");
}
+ free(fds);
+ tprints(", ");
+ printtv_bitness(tcp, args[4], bitness, 0);
}
- else
- {
- unsigned int cumlen = 0;
- char *sep = "";
+ else {
+ static char outstr[1024];
+ char *outptr;
+#define end_outstr (outstr + sizeof(outstr))
+ int ready_fds;
if (syserror(tcp))
return 0;
- if ((nfds = tcp->u_rval) == 0) {
+ ready_fds = tcp->u_rval;
+ if (ready_fds == 0) {
tcp->auxstr = "Timeout";
return RVAL_STR;
}
- outstr[0] = '\0';
- for (i = 0; i < 3; i++) {
+
+ fds = malloc(fdsize);
+ if (!fds)
+ die_out_of_memory();
+
+ outptr = outstr;
+ sep = "";
+ for (i = 0; i < 3 && ready_fds > 0; i++) {
int first = 1;
- char str[20];
- tcp->auxstr = outstr;
arg = args[i+1];
- if (!arg || umove(tcp, arg, &fds) < 0)
+ if (!arg || umoven(tcp, arg, fdsize, (char *) fds) < 0)
continue;
- for (j = 0; j < args[0]; j++) {
- if (FD_ISSET(j, &fds)) {
+ 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) {
- sprintf(str, "%s%s [%u", sep,
- i == 0 ? "in" :
- i == 1 ? "out" :
- "except", j);
+ outptr += sprintf(outptr, "%s%s [%u",
+ sep,
+ i == 0 ? "in" : i == 1 ? "out" : "except",
+ j
+ );
first = 0;
sep = ", ";
}
- else
- sprintf(str, " %u", j);
- cumlen += strlen(str);
- if (cumlen < sizeof(outstr))
- strcat(outstr, str);
- nfds--;
+ else {
+ outptr += sprintf(outptr, " %u", j);
+ }
}
+ if (--ready_fds == 0)
+ break;
}
- if (cumlen)
- strcat(outstr, "]");
- if (nfds == 0)
- break;
+ if (outptr != outstr)
+ *outptr++ = ']';
}
-#ifdef LINUX
+ free(fds);
/* This contains no useful information on SunOS. */
if (args[4]) {
- char str[20];
-
- if (umove(tcp, args[4], &tv) >= 0) {
-#ifdef ALPHA
- if (bitness) {
- tv32=(struct timeval32*)&tv;
- sprintf(str, "%sleft {%u, %u}", sep,
- tv32->tv_sec, tv32->tv_usec);
- } else
-#endif
- sprintf(str, "%sleft {%lu, %lu}", sep,
- (long) tv.tv_sec, (long) tv.tv_usec);
-
- if ((cumlen += strlen(str)) < sizeof(outstr))
- strcat(outstr, str);
+ if (outptr < end_outstr - (10 + TIMEVAL_TEXT_BUFSIZE)) {
+ outptr += sprintf(outptr, "%sleft ", sep);
+ outptr = sprinttv(outptr, tcp, args[4], bitness, /*special:*/ 0);
}
}
-#endif /* LINUX */
+ *outptr = '\0';
+ tcp->auxstr = outstr;
return RVAL_STR;
+#undef end_outstr
}
return 0;
}
-#ifdef LINUX
-
int
-sys_oldselect(tcp)
-struct tcb *tcp;
+sys_oldselect(struct tcb *tcp)
{
long args[5];
if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
- tprintf("[...]");
+ tprints("[...]");
return 0;
}
- return decode_select(tcp, args, 0);
+ return decode_select(tcp, args, BITNESS_CURRENT);
}
#ifdef ALPHA
-sys_osf_select(tcp)
-struct tcb *tcp;
+int
+sys_osf_select(struct tcb *tcp)
{
long *args = tcp->u_arg;
- return decode_select(tcp, args, 1);
+ 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 }
+};
+
+/* Not aliased to printargs_ld: we want it to have a distinct address */
+int
+sys_epoll_create(struct tcb *tcp)
+{
+ return printargs_ld(tcp);
}
+
+static const struct xlat epollflags[] = {
+#ifdef EPOLL_CLOEXEC
+ { EPOLL_CLOEXEC, "EPOLL_CLOEXEC" },
#endif
+#ifdef EPOLL_NONBLOCK
+ { EPOLL_NONBLOCK, "EPOLL_NONBLOCK" },
+#endif
+ { 0, NULL }
+};
+
+int
+sys_epoll_create1(struct tcb *tcp)
+{
+ if (entering(tcp))
+ printflags(epollflags, tcp->u_arg[0], "EPOLL_???");
+ return 0;
+}
-#endif /* LINUX */
+#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_select(tcp)
-struct tcb *tcp;
+sys_epoll_ctl(struct tcb *tcp)
{
- long *args = tcp->u_arg;
- return decode_select(tcp, args, 0);
+ 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("{...}");
+ }
+ }
+ 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;
+
+ 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
+ }
+ tprintf(", %d, %d", (int) tcp->u_arg[2], (int) 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(", ");
+ /* 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]);
+ }
+ return 0;
+}
+
+int
+sys_select(struct tcb *tcp)
+{
+ return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
+}
+
+int
+sys_pselect6(struct tcb *tcp)
+{
+ int rc = decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
+ if (entering(tcp)) {
+ long r;
+ struct {
+ unsigned long ptr;
+ unsigned long len;
+ } data;
+#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
+ if (current_wordsize == 4) {
+ struct {
+ uint32_t ptr;
+ uint32_t len;
+ } data32;
+ r = umove(tcp, tcp->u_arg[5], &data32);
+ data.ptr = data32.ptr;
+ data.len = data32.len;
+ } else
+#endif
+ r = umove(tcp, tcp->u_arg[5], &data);
+ if (r < 0)
+ tprintf(", %#lx", tcp->u_arg[5]);
+ else {
+ 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_???");
+ }
+ }
+ return 0;
+}
+
+int
+sys_eventfd(struct tcb *tcp)
+{
+ return do_eventfd(tcp, -1);
+}
+
+int
+sys_eventfd2(struct tcb *tcp)
+{
+ return do_eventfd(tcp, 1);
+}
+
+int
+sys_perf_event_open(struct tcb *tcp)
+{
+ if (entering(tcp)) {
+ tprintf("%#lx, %d, %d, %d, ",
+ tcp->u_arg[0],
+ (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;
}
projects / strace / blobdiff