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118 lines
3.4 KiB
118 lines
3.4 KiB
/* |
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* Copyright (c) 2004-2007 Ulrich Drepper <drepper@redhat.com> |
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* Copyright (c) 2004 Roland McGrath <roland@redhat.com> |
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* Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2015-2017 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "defs.h" |
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#include <fcntl.h> |
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#include <sys/epoll.h> |
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SYS_FUNC(epoll_create) |
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{ |
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tprintf("%d", (int) tcp->u_arg[0]); |
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return RVAL_DECODED | RVAL_FD; |
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} |
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#include "xlat/epollflags.h" |
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SYS_FUNC(epoll_create1) |
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{ |
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printflags(epollflags, tcp->u_arg[0], "EPOLL_???"); |
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return RVAL_DECODED | RVAL_FD; |
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} |
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#include "xlat/epollevents.h" |
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static bool |
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print_epoll_event(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data) |
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{ |
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const struct epoll_event *ev = elem_buf; |
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tprints("{"); |
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printflags(epollevents, ev->events, "EPOLL???"); |
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/* We cannot know what format the program uses, so print u32 and u64 |
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which will cover every value. */ |
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tprintf(", {u32=%" PRIu32 ", u64=%" PRIu64 "}}", |
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ev->data.u32, ev->data.u64); |
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return true; |
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} |
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#include "xlat/epollctls.h" |
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SYS_FUNC(epoll_ctl) |
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{ |
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printfd(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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const unsigned int op = tcp->u_arg[1]; |
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printxval(epollctls, op, "EPOLL_CTL_???"); |
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tprints(", "); |
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printfd(tcp, tcp->u_arg[2]); |
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tprints(", "); |
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struct epoll_event ev; |
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if (EPOLL_CTL_DEL == op) |
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printaddr(tcp->u_arg[3]); |
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else if (!umove_or_printaddr(tcp, tcp->u_arg[3], &ev)) |
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print_epoll_event(tcp, &ev, sizeof(ev), 0); |
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return RVAL_DECODED; |
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} |
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static void |
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epoll_wait_common(struct tcb *tcp) |
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{ |
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if (entering(tcp)) { |
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printfd(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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} else { |
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struct epoll_event ev; |
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print_array(tcp, tcp->u_arg[1], tcp->u_rval, &ev, sizeof(ev), |
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umoven_or_printaddr, print_epoll_event, 0); |
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tprintf(", %d, %d", (int) tcp->u_arg[2], (int) tcp->u_arg[3]); |
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} |
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} |
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SYS_FUNC(epoll_wait) |
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{ |
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epoll_wait_common(tcp); |
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return 0; |
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} |
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SYS_FUNC(epoll_pwait) |
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{ |
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epoll_wait_common(tcp); |
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if (exiting(tcp)) { |
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tprints(", "); |
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/* NB: kernel requires arg[5] == NSIG_BYTES */ |
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print_sigset_addr_len(tcp, tcp->u_arg[4], tcp->u_arg[5]); |
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tprintf(", %" PRI_klu, tcp->u_arg[5]); |
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} |
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return 0; |
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}
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