| /* |
| * 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 |
| * 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 <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(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("}"); |
| } |
| #endif /* USE_PRINTFLOCK64 */ |
| |
| static void |
| printflock(struct tcb *tcp, long addr, int getlk) |
| { |
| struct flock fl; |
| int r; |
| |
| #if SUPPORTED_PERSONALITIES > 1 |
| if ( |
| # if SIZEOF_OFF_T > SIZEOF_LONG |
| current_personality > 0 && |
| #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; |
| r = umove(tcp, addr, &fl32); |
| if (r >= 0) { |
| 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 |
| { |
| r = umove(tcp, addr, &fl); |
| } |
| if (r < 0) { |
| tprints("{...}"); |
| 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; |
| } |
| |
| SYS_FUNC(dup) |
| { |
| if (entering(tcp)) { |
| printfd(tcp, tcp->u_arg[0]); |
| } |
| return RVAL_FD; |
| } |
| |
| static int |
| do_dup2(struct tcb *tcp, int flags_arg) |
| { |
| if (entering(tcp)) { |
| 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 RVAL_FD; |
| } |
| |
| SYS_FUNC(dup2) |
| { |
| return do_dup2(tcp, -1); |
| } |
| |
| SYS_FUNC(dup3) |
| { |
| 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) |
| { |
| int i, j; |
| int nfds, fdsize; |
| fd_set *fds = NULL; |
| 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; |
| |
| /* 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)) { |
| tprintf("%d", (int) args[0]); |
| |
| if (verbose(tcp) && fdsize > 0) |
| fds = xmalloc(fdsize); |
| for (i = 0; i < 3; i++) { |
| arg = args[i+1]; |
| if (arg == 0) { |
| tprints(", NULL"); |
| continue; |
| } |
| if (!fds) { |
| tprintf(", %#lx", arg); |
| continue; |
| } |
| if (umoven(tcp, arg, fdsize, fds) < 0) { |
| tprints(", [?]"); |
| continue; |
| } |
| 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 { |
| static char outstr[1024]; |
| char *outptr; |
| #define end_outstr (outstr + sizeof(outstr)) |
| int ready_fds; |
| |
| if (syserror(tcp)) |
| return 0; |
| |
| ready_fds = tcp->u_rval; |
| if (ready_fds == 0) { |
| tcp->auxstr = "Timeout"; |
| return RVAL_STR; |
| } |
| |
| fds = xmalloc(fdsize); |
| |
| 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, fds) < 0) |
| continue; |
| 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); |
| } |
| } |
| if (--ready_fds == 0) |
| break; |
| } |
| if (outptr != outstr) |
| *outptr++ = ']'; |
| } |
| 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); |
| } |
| } |
| *outptr = '\0'; |
| tcp->auxstr = outstr; |
| return RVAL_STR; |
| #undef end_outstr |
| } |
| return 0; |
| } |
| |
| SYS_FUNC(oldselect) |
| { |
| long args[5]; |
| |
| if (umoven(tcp, tcp->u_arg[0], sizeof args, args) < 0) { |
| tprints("[...]"); |
| return 0; |
| } |
| return decode_select(tcp, args, BITNESS_CURRENT); |
| } |
| |
| #ifdef ALPHA |
| SYS_FUNC(osf_select) |
| { |
| long *args = tcp->u_arg; |
| return decode_select(tcp, args, 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)) { |
| 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 ( |
| #ifdef EPOLL_CTL_DEL |
| (tcp->u_arg[1] != EPOLL_CTL_DEL) && |
| #endif |
| umove(tcp, tcp->u_arg[3], &ev) == 0) |
| print_epoll_event(&ev); |
| else |
| #endif |
| tprintf("%lx", tcp->u_arg[3]); |
| } |
| } |
| 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]); |
| } |
| } |
| |
| SYS_FUNC(epoll_wait) |
| { |
| epoll_wait_common(tcp); |
| return 0; |
| } |
| |
| SYS_FUNC(epoll_pwait) |
| { |
| 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; |
| } |
| |
| SYS_FUNC(select) |
| { |
| return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT); |
| } |
| |
| SYS_FUNC(pselect6) |
| { |
| 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; |
| } |
| |
| SYS_FUNC(eventfd) |
| { |
| return do_eventfd(tcp, -1); |
| } |
| |
| SYS_FUNC(eventfd2) |
| { |
| return do_eventfd(tcp, 1); |
| } |
| |
| SYS_FUNC(perf_event_open) |
| { |
| 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; |
| } |