| /* |
| * Copyright (c) 2004-2007 Ulrich Drepper <drepper@redhat.com> |
| * Copyright (c) 2004 Roland McGrath <roland@redhat.com> |
| * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org> |
| * 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/epoll.h> |
| |
| SYS_FUNC(epoll_create) |
| { |
| tprintf("%d", (int) tcp->u_arg[0]); |
| |
| return RVAL_DECODED | RVAL_FD; |
| } |
| |
| #include "xlat/epollflags.h" |
| |
| SYS_FUNC(epoll_create1) |
| { |
| printflags(epollflags, tcp->u_arg[0], "EPOLL_???"); |
| |
| return RVAL_DECODED | RVAL_FD; |
| } |
| |
| #include "xlat/epollevents.h" |
| |
| static bool |
| print_epoll_event(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data) |
| { |
| const struct epoll_event *ev = elem_buf; |
| |
| 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); |
| |
| return true; |
| } |
| |
| #include "xlat/epollctls.h" |
| |
| SYS_FUNC(epoll_ctl) |
| { |
| printfd(tcp, tcp->u_arg[0]); |
| tprints(", "); |
| printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???"); |
| tprints(", "); |
| printfd(tcp, tcp->u_arg[2]); |
| tprints(", "); |
| struct epoll_event ev; |
| 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(tcp, &ev, sizeof(ev), 0); |
| |
| return RVAL_DECODED; |
| } |
| |
| static void |
| epoll_wait_common(struct tcb *tcp) |
| { |
| if (entering(tcp)) { |
| printfd(tcp, tcp->u_arg[0]); |
| tprints(", "); |
| } else { |
| struct epoll_event ev; |
| print_array(tcp, tcp->u_arg[1], tcp->u_rval, &ev, sizeof(ev), |
| umoven_or_printaddr, print_epoll_event, 0); |
| 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; |
| } |