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105 lines
3.0 KiB
105 lines
3.0 KiB
/* |
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* Copyright (c) 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 "print_fields.h" |
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#include "xlat/kcmp_types.h" |
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struct strace_kcmp_epoll_slot { |
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uint32_t efd; |
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uint32_t tfd; |
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uint32_t toff; |
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}; |
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static void |
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printpidfd(struct tcb *tcp, pid_t pid, int fd) |
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{ |
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/* |
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* XXX We want to use printfd here, but we should figure out which |
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* process in strace's PID NS is referred to first. |
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*/ |
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tprintf("%d", fd); |
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} |
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#define PRINT_FIELD_PIDFD(prefix_, where_, field_, tcp_, pid_) \ |
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do { \ |
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STRACE_PRINTF("%s%s=", (prefix_), #field_); \ |
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printpidfd((tcp_), (pid_), (where_).field_); \ |
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} while (0) |
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SYS_FUNC(kcmp) |
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{ |
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pid_t pid1 = tcp->u_arg[0]; |
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pid_t pid2 = tcp->u_arg[1]; |
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int type = tcp->u_arg[2]; |
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kernel_ulong_t idx1 = tcp->u_arg[3]; |
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kernel_ulong_t idx2 = tcp->u_arg[4]; |
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tprintf("%d, %d, ", pid1, pid2); |
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printxval(kcmp_types, type, "KCMP_???"); |
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switch (type) { |
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case KCMP_FILE: |
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tprints(", "); |
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printpidfd(tcp, pid1, idx1); |
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tprints(", "); |
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printpidfd(tcp, pid1, idx2); |
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break; |
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case KCMP_EPOLL_TFD: { |
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struct strace_kcmp_epoll_slot slot; |
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tprints(", "); |
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printpidfd(tcp, pid1, idx1); |
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tprints(", "); |
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if (umove_or_printaddr(tcp, idx2, &slot)) |
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break; |
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PRINT_FIELD_PIDFD("{", slot, efd, tcp, pid2); |
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PRINT_FIELD_PIDFD(", ", slot, tfd, tcp, pid2); |
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PRINT_FIELD_U(", ", slot, toff); |
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tprints("}"); |
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break; |
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} |
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case KCMP_FILES: |
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case KCMP_FS: |
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case KCMP_IO: |
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case KCMP_SIGHAND: |
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case KCMP_SYSVSEM: |
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case KCMP_VM: |
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break; |
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default: |
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tprintf(", %#" PRI_klx ", %#" PRI_klx, idx1, idx2); |
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} |
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return RVAL_DECODED; |
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}
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