ba10a421b8
Some systems (like Bionic) omit support for SysV related code. That means no C library headers for strace to include. Add configure tests to probe the headers from the kernel and use them when they are available. It might make more sense to never rely on the C library's headers as there is no guarantee or requirement that the structure layout between apps and the C library match that what is passed to the kernel. * configure.ac (AC_CHECK_HEADERS): Check for linux/ipc.h, linux/mqueue.h, linux/msg.h, linux/sem.h, linux/shm.h, sys/ipc.h, sys/msg.h, sys/sem.h, and sys/shm.h. * ipc_defs.h: Include <sys/ipc.h> or <linux/ipc.h> depending on what is available. * ipc_msg.c: Replace <sys/ipc.h> with "ipc_defs.h". Fallback to <linux/msg.h> when available. * ipc_msgctl.c: Include <sys/msg.h>, <asm/msgbuf.h>, or <linux/msg.h> based on what is available. Note missing support for old ipc structs. * ipc_sem.c: Include <sys/sem.h> or <linux/sem.h> depending on what is available. Only decode sembuf when available. * ipc_shm.c: Fallback to <linux/shm.h> when available. * ipc_shmctl.c: Include <sys/shm.h>, <asm/shmbuf.h>, or <linux/shm.h> based on what is available. Note missing support for old ipc structs. * print_mq_attr.c: Fallback to <linux/mqueue.h> when available.
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/*
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* Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de>
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
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* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
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* Copyright (c) 2003-2006 Roland McGrath <roland@redhat.com>
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* Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
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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 DEF_MPERS_TYPE(shmid_ds_t)
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#include "ipc_defs.h"
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#ifdef HAVE_SYS_SHM_H
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/* The C library generally exports the struct the current kernel expects. */
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# include <sys/shm.h>
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typedef struct shmid_ds shmid_ds_t;
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#elif defined HAVE_LINUX_SHM_H
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/* The linux header might provide the right struct. */
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# include <linux/shm.h>
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typedef struct shmid64_ds shmid_ds_t;
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#endif
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#include MPERS_DEFS
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#include "xlat/shmctl_flags.h"
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static void
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print_shmid_ds(struct tcb *tcp, const long addr, int cmd)
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{
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/* TODO: We don't properly decode old compat ipc calls. */
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if (cmd & IPC_64)
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cmd &= ~IPC_64;
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shmid_ds_t shmid_ds;
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switch (cmd) {
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case IPC_SET:
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case IPC_STAT:
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if (umove_or_printaddr(tcp, addr, &shmid_ds))
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return;
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tprints("{shm_perm={");
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printuid("uid=", shmid_ds.shm_perm.uid);
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printuid(", gid=", shmid_ds.shm_perm.gid);
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tprints(", mode=");
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tprints(sprintmode(shmid_ds.shm_perm.mode));
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if (cmd != IPC_STAT) {
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tprints("}, ...}");
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break;
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}
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tprintf(", key=%u", (unsigned) shmid_ds.shm_perm.__key);
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printuid(", cuid=", shmid_ds.shm_perm.cuid);
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printuid(", cgid=", shmid_ds.shm_perm.cgid);
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tprints("}");
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tprintf(", shm_segsz=%u", (unsigned) shmid_ds.shm_segsz);
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tprintf(", shm_cpid=%u", (unsigned) shmid_ds.shm_cpid);
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tprintf(", shm_lpid=%u", (unsigned) shmid_ds.shm_lpid);
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tprintf(", shm_nattch=%u", (unsigned) shmid_ds.shm_nattch);
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tprintf(", shm_atime=%u", (unsigned) shmid_ds.shm_atime);
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tprintf(", shm_dtime=%u", (unsigned) shmid_ds.shm_dtime);
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tprintf(", shm_ctime=%u", (unsigned) shmid_ds.shm_ctime);
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tprints("}");
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break;
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default:
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printaddr(addr);
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break;
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}
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}
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SYS_FUNC(shmctl)
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{
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if (entering(tcp)) {
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tprintf("%lu, ", tcp->u_arg[0]);
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PRINTCTL(shmctl_flags, tcp->u_arg[1], "SHM_???");
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tprints(", ");
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} else {
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const long addr = tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2];
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print_shmid_ds(tcp, addr, tcp->u_arg[1]);
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}
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return 0;
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}
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