* 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
*/
#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
-
-/* --- Copied from libaio-0.3.109/src/libaio.h ---
- * Why keep a copy instead of using external libaio.h?
- * Because we want to properly decode 32-bit aio calls
- * by 64-bit strace. For that, we need more definitions than
- * libaio.h provides. (TODO).
- * Keeping our local 32-bit compat defs in sync with libaio.h
- * _without seeing libaio structs_ is hard/more bug-prone.
- * A smaller benefit is that we don't need libaio installed.
- */
-#define HAVE_LIBAIO_H 1
-typedef enum io_iocb_cmd {
- IO_CMD_PREAD = 0,
- IO_CMD_PWRITE = 1,
-
- IO_CMD_FSYNC = 2,
- IO_CMD_FDSYNC = 3,
-
- IO_CMD_POLL = 5, /* Never implemented in mainline, see io_prep_poll */
- IO_CMD_NOOP = 6,
- IO_CMD_PREADV = 7,
- IO_CMD_PWRITEV = 8,
-} io_iocb_cmd_t;
-
-#if defined(__i386__) /* little endian, 32 bits */
-#define PADDED(x, y) x; unsigned y
-#define PADDEDptr(x, y) x; unsigned y
-#define PADDEDul(x, y) unsigned long x; unsigned y
-#elif defined(__ia64__) || defined(__x86_64__) || defined(__alpha__)
-#define PADDED(x, y) x, y
-#define PADDEDptr(x, y) x
-#define PADDEDul(x, y) unsigned long x
-#elif defined(__powerpc64__) /* big endian, 64 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x,y) x
-#define PADDEDul(x, y) unsigned long x
-#elif defined(__PPC__) /* big endian, 32 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x, y) unsigned y; x
-#define PADDEDul(x, y) unsigned y; unsigned long x
-#elif defined(__s390x__) /* big endian, 64 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x,y) x
-#define PADDEDul(x, y) unsigned long x
-#elif defined(__s390__) /* big endian, 32 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x, y) unsigned y; x
-#define PADDEDul(x, y) unsigned y; unsigned long x
-#elif defined(__arm__)
-# if defined (__ARMEB__) /* big endian, 32 bits */
-#define PADDED(x, y) unsigned y; x
-#define PADDEDptr(x, y) unsigned y; x
-#define PADDEDul(x, y) unsigned y; unsigned long x
-# else /* little endian, 32 bits */
-#define PADDED(x, y) x; unsigned y
-#define PADDEDptr(x, y) x; unsigned y
-#define PADDEDul(x, y) unsigned long x; unsigned y
-# endif
-#else
-# warning No AIO definitions for this architecture => no io_submit decoding
-# undef HAVE_LIBAIO_H
-#endif
-
-#ifdef HAVE_LIBAIO_H
-struct io_iocb_poll {
- PADDED(int events, __pad1);
-}; /* result code is the set of result flags or -'ve errno */
-
-struct io_iocb_sockaddr {
- struct sockaddr *addr;
- int len;
-}; /* result code is the length of the sockaddr, or -'ve errno */
-
-struct io_iocb_common {
- PADDEDptr(void *buf, __pad1);
- PADDEDul(nbytes, __pad2);
- long long offset;
- long long __pad3;
- unsigned flags;
- unsigned resfd;
-}; /* result code is the amount read or -'ve errno */
-
-struct io_iocb_vector {
- const struct iovec *vec;
- int nr;
- long long offset;
-}; /* result code is the amount read or -'ve errno */
-
-struct iocb {
- PADDEDptr(void *data, __pad1); /* Return in the io completion event */
- PADDED(unsigned key, __pad2); /* For use in identifying io requests */
-
- short aio_lio_opcode;
- short aio_reqprio;
- int aio_fildes;
-
- union {
- struct io_iocb_common c;
- struct io_iocb_vector v;
- struct io_iocb_poll poll;
- struct io_iocb_sockaddr saddr;
- } u;
-};
-
-struct io_event {
- PADDEDptr(void *data, __pad1);
- PADDEDptr(struct iocb *obj, __pad2);
- PADDEDul(res, __pad3);
- PADDEDul(res2, __pad4);
-};
-
-#undef PADDED
-#undef PADDEDptr
-#undef PADDEDul
-
-#endif /* HAVE_LIBAIO_H */
-
-/* --- End of a chunk of libaio.h --- */
-/* Not defined in libaio.h */
-#ifndef IOCB_RESFD
-# define IOCB_RESFD (1 << 0)
-#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 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 _LFS64_LARGEFILE
-/* fcntl/lockf */
-static void
-printflock64(struct tcb *tcp, long addr, int getlk)
+SYS_FUNC(close)
{
- struct flock64 fl;
+ printfd(tcp, tcp->u_arg[0]);
- if (umove(tcp, addr, &fl) < 0) {
- tprints("{...}");
- 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("}");
+ return RVAL_DECODED;
}
-#endif
-/* fcntl/lockf */
-static void
-printflock(struct tcb *tcp, long addr, int getlk)
+SYS_FUNC(dup)
{
- struct flock fl;
+ printfd(tcp, tcp->u_arg[0]);
-#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;
- }
- }
- 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(struct tcb *tcp)
-{
- 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
-
-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;
-}
-#endif /* LOCK_SH */
-
-int
-sys_close(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);
}
-int
-sys_dup3(struct tcb *tcp)
+SYS_FUNC(dup3)
{
return do_dup2(tcp, 2);
}
-#if defined(ALPHA)
-int
-sys_getdtablesize(struct tcb *tcp)
-{
- 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;
+ 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 (nfds < 0) {
+ 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;
if (entering(tcp)) {
tprintf("%d", (int) args[0]);
- if (fdsize > 0) {
+ if (verbose(tcp) && fdsize > 0)
fds = malloc(fdsize);
- if (!fds)
- die_out_of_memory();
- }
for (i = 0; i < 3; i++) {
- arg = args[i+1];
- if (arg == 0) {
- tprints(", NULL");
- continue;
- }
- if (!verbose(tcp) || !fds) {
- 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(", [");
+ tprints("[");
for (j = 0, sep = "";; j++) {
j = next_set_bit(fds, j, nfds);
if (j < 0)
}
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))
}
fds = malloc(fdsize);
- if (!fds)
- die_out_of_memory();
outptr = outstr;
sep = "";
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++) {
j = next_set_bit(fds, j, nfds);
);
first = 0;
sep = ", ";
- }
- else {
+ } else {
outptr += sprintf(outptr, " %u", j);
}
}
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';
return 0;
}
-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)
-{
- 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 }
-};
-
-/* 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;
-}
-
-#ifdef HAVE_SYS_EPOLL_H
-static void
-print_epoll_event(struct epoll_event *ev)
+SYS_FUNC(oldselect)
{
- 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
+ kernel_ulong_t select_args[5];
+ unsigned int oldselect_args[5];
-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(", %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_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;
-}
-
-#ifdef HAVE_LIBAIO_H
-
-enum iocb_sub {
- SUB_NONE, SUB_COMMON, SUB_POLL, SUB_VECTOR
-};
-
-static enum iocb_sub
-tprint_lio_opcode(unsigned cmd)
-{
- 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)) {
- tprints(cmds[cmd].name);
- return cmds[cmd].sub;
- }
- tprintf("%u /* SUB_??? */", cmd);
- return SUB_NONE;
+ return decode_select(tcp, select_args, print_timeval, sprint_timeval);
}
-static void
-print_common_flags(struct iocb *iocb)
+#ifdef ALPHA
+SYS_FUNC(osf_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_timeval32, sprint_timeval32);
}
-
-#endif /* HAVE_LIBAIO_H */
-
-int
-sys_io_submit(struct tcb *tcp)
-{
- if (entering(tcp)) {
-#ifdef HAVE_LIBAIO_H
- long nr = tcp->u_arg[1];
- /* if nr <= 0, we end up printing just "{}" */
- tprintf("%lu, %ld, {", tcp->u_arg[0], tcp->u_arg[1]);
- {
- long i;
- struct iocb **iocbs = (void *)tcp->u_arg[2];
-//FIXME: decoding of 32-bit call by 64-bit strace
-
- for (i = 0; i < nr; i++, iocbs++) {
- enum iocb_sub sub;
- struct iocb *iocbp;
- struct iocb iocb;
- if (i)
- tprints(", ");
-
- if (umove(tcp, (unsigned long)iocbs, &iocbp)) {
- tprintf("%#lx", (unsigned long)iocbs);
- /* No point in trying to read iocbs+1 etc */
- /* (nr can be ridiculously large): */
- break;
- }
- if (umove(tcp, (unsigned long)iocbp, &iocb)) {
- tprintf("{%#lx}", (unsigned long)iocbp);
- continue;
- }
- tprints("{");
- if (iocb.data)
- tprintf("data:%p, ", iocb.data);
- if (iocb.key)
- tprintf("key:%u, ", iocb.key);
- sub = tprint_lio_opcode(iocb.aio_lio_opcode);
- 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:%lld",
- iocb.u.c.nbytes,
- iocb.u.c.offset);
- print_common_flags(&iocb);
- break;
- case SUB_VECTOR:
- tprintf(", %lld", iocb.u.v.offset);
- print_common_flags(&iocb);
- tprints(", ");
- 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("}");
- }
- }
- tprints("}");
-#else
- tprintf("%lu, %ld, %#lx", tcp->u_arg[0], tcp->u_arg[1], tcp->u_arg[2]);
#endif
- }
- return 0;
-}
-int
-sys_io_cancel(struct tcb *tcp)
+SYS_FUNC(select)
{
- 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, %u, %u, %d}, ",
- iocb.data, iocb.key,
- (unsigned)iocb.aio_lio_opcode,
- (unsigned)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("{...}");
- }
- }
- return 0;
+ return decode_select(tcp, tcp->u_arg, print_timeval, sprint_timeval);
}
-int
-sys_io_getevents(struct tcb *tcp)
-{
- 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(", ");
-
- 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
+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];
}
-
- print_timespec(tcp, tcp->u_arg[4]);
+ return r;
}
- return 0;
+#endif /* !current_klongsize */
+ return umoven_or_printaddr(tcp, addr, n * sizeof(*ptr), ptr);
}
-int
-sys_select(struct tcb *tcp)
+SYS_FUNC(pselect6)
{
- 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);
+ 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;
-#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;
-}
+ kernel_ulong_t data[2];
-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_???");
+ 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]);
}
}
- 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;
+ return rc;
}
projects / strace / blobdiff