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       1                 :            : /*
       2                 :            :  * Copyright (c) 2004-2007 Ulrich Drepper <drepper@redhat.com>
       3                 :            :  * Copyright (c) 2004 Roland McGrath <roland@redhat.com>
       4                 :            :  * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
       5                 :            :  * All rights reserved.
       6                 :            :  *
       7                 :            :  * Redistribution and use in source and binary forms, with or without
       8                 :            :  * modification, are permitted provided that the following conditions
       9                 :            :  * are met:
      10                 :            :  * 1. Redistributions of source code must retain the above copyright
      11                 :            :  *    notice, this list of conditions and the following disclaimer.
      12                 :            :  * 2. Redistributions in binary form must reproduce the above copyright
      13                 :            :  *    notice, this list of conditions and the following disclaimer in the
      14                 :            :  *    documentation and/or other materials provided with the distribution.
      15                 :            :  * 3. The name of the author may not be used to endorse or promote products
      16                 :            :  *    derived from this software without specific prior written permission.
      17                 :            :  *
      18                 :            :  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
      19                 :            :  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
      20                 :            :  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
      21                 :            :  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
      22                 :            :  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
      23                 :            :  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      24                 :            :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      25                 :            :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      26                 :            :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
      27                 :            :  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      28                 :            :  */
      29                 :            : 
      30                 :            : #include "defs.h"
      31                 :            : #include <fcntl.h>
      32                 :            : #include <sys/epoll.h>
      33                 :            : 
      34                 :          6 : SYS_FUNC(epoll_create)
      35                 :            : {
      36                 :          6 :         tprintf("%d", (int) tcp->u_arg[0]);
      37                 :            : 
      38                 :          6 :         return RVAL_DECODED | RVAL_FD;
      39                 :            : }
      40                 :            : 
      41                 :            : #include "xlat/epollflags.h"
      42                 :            : 
      43                 :         12 : SYS_FUNC(epoll_create1)
      44                 :            : {
      45                 :         12 :         printflags(epollflags, tcp->u_arg[0], "EPOLL_???");
      46                 :            : 
      47                 :         12 :         return RVAL_DECODED | RVAL_FD;
      48                 :            : }
      49                 :            : 
      50                 :            : #include "xlat/epollevents.h"
      51                 :            : 
      52                 :            : static bool
      53                 :          6 : print_epoll_event(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
      54                 :            : {
      55                 :          6 :         const struct epoll_event *ev = elem_buf;
      56                 :            : 
      57                 :          6 :         tprints("{");
      58                 :          6 :         printflags(epollevents, ev->events, "EPOLL???");
      59                 :            :         /* We cannot know what format the program uses, so print u32 and u64
      60                 :            :            which will cover every value.  */
      61                 :          6 :         tprintf(", {u32=%" PRIu32 ", u64=%" PRIu64 "}}",
      62                 :            :                 ev->data.u32, ev->data.u64);
      63                 :            : 
      64                 :          6 :         return true;
      65                 :            : }
      66                 :            : 
      67                 :            : #include "xlat/epollctls.h"
      68                 :            : 
      69                 :         18 : SYS_FUNC(epoll_ctl)
      70                 :            : {
      71                 :         18 :         printfd(tcp, tcp->u_arg[0]);
      72                 :         18 :         tprints(", ");
      73                 :         18 :         const unsigned int op = tcp->u_arg[1];
      74                 :         18 :         printxval(epollctls, op, "EPOLL_CTL_???");
      75                 :         18 :         tprints(", ");
      76                 :         18 :         printfd(tcp, tcp->u_arg[2]);
      77                 :         18 :         tprints(", ");
      78                 :            :         struct epoll_event ev;
      79         [ +  + ]:         18 :         if (EPOLL_CTL_DEL == op)
      80                 :          6 :                 printaddr(tcp->u_arg[3]);
      81         [ +  + ]:         12 :         else if (!umove_or_printaddr(tcp, tcp->u_arg[3], &ev))
      82                 :          6 :                 print_epoll_event(tcp, &ev, sizeof(ev), 0);
      83                 :            : 
      84                 :         18 :         return RVAL_DECODED;
      85                 :            : }
      86                 :            : 
      87                 :            : static void
      88                 :         24 : epoll_wait_common(struct tcb *tcp)
      89                 :            : {
      90         [ +  + ]:         24 :         if (entering(tcp)) {
      91                 :         12 :                 printfd(tcp, tcp->u_arg[0]);
      92                 :         12 :                 tprints(", ");
      93                 :            :         } else {
      94                 :            :                 struct epoll_event ev;
      95                 :         12 :                 print_array(tcp, tcp->u_arg[1], tcp->u_rval, &ev, sizeof(ev),
      96                 :            :                             umoven_or_printaddr, print_epoll_event, 0);
      97                 :         12 :                 tprintf(", %d, %d", (int) tcp->u_arg[2], (int) tcp->u_arg[3]);
      98                 :            :         }
      99                 :         24 : }
     100                 :            : 
     101                 :         12 : SYS_FUNC(epoll_wait)
     102                 :            : {
     103                 :         12 :         epoll_wait_common(tcp);
     104                 :         12 :         return 0;
     105                 :            : }
     106                 :            : 
     107                 :         12 : SYS_FUNC(epoll_pwait)
     108                 :            : {
     109                 :         12 :         epoll_wait_common(tcp);
     110         [ +  + ]:         12 :         if (exiting(tcp)) {
     111                 :          6 :                 tprints(", ");
     112                 :            :                 /* NB: kernel requires arg[5] == NSIG_BYTES */
     113                 :          6 :                 print_sigset_addr_len(tcp, tcp->u_arg[4], tcp->u_arg[5]);
     114                 :          6 :                 tprintf(", %" PRI_klu, tcp->u_arg[5]);
     115                 :            :         }
     116                 :         12 :         return 0;
     117                 :            : }