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      1 /*
      2  * Copyright (c) 1993 Ulrich Pegelow <pegelow (at) moorea.uni-muenster.de>
      3  * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl>
      4  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs (at) world.std.com>
      5  * Copyright (c) 1996-1999 Wichert Akkerman <wichert (at) cistron.nl>
      6  * Copyright (c) 2003-2006 Roland McGrath <roland (at) redhat.com>
      7  * Copyright (c) 2006-2015 Dmitry V. Levin <ldv (at) altlinux.org>
      8  * All rights reserved.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include "defs.h"
     34 
     35 #include DEF_MPERS_TYPE(msqid_ds_t)
     36 
     37 #include "ipc_defs.h"
     38 
     39 #ifdef HAVE_SYS_MSG_H
     40 /* The C library generally exports the struct the current kernel expects. */
     41 # include <sys/msg.h>
     42 typedef struct msqid_ds msqid_ds_t;
     43 #elif defined HAVE_LINUX_MSG_H
     44 /* The linux header might provide the right struct. */
     45 # include <linux/msg.h>
     46 typedef struct msqid64_ds msqid_ds_t;
     47 #endif
     48 
     49 #include MPERS_DEFS
     50 
     51 #include "xlat/msgctl_flags.h"
     52 
     53 static void
     54 print_msqid_ds(struct tcb *tcp, const long addr, int cmd)
     55 {
     56 	/* TODO: We don't properly decode old compat ipc calls. */
     57 	if (cmd & IPC_64)
     58 		cmd &= ~IPC_64;
     59 	msqid_ds_t msqid_ds;
     60 	switch (cmd) {
     61 	case IPC_SET:
     62 	case IPC_STAT:
     63 		if (umove_or_printaddr(tcp, addr, &msqid_ds))
     64 			return;
     65 
     66 		tprints("{msg_perm={");
     67 		printuid("uid=", msqid_ds.msg_perm.uid);
     68 		printuid(", gid=", msqid_ds.msg_perm.gid);
     69 		tprints(", mode=");
     70 		tprints(sprintmode(msqid_ds.msg_perm.mode));
     71 
     72 		if (cmd != IPC_STAT) {
     73 			tprints("}, ...}");
     74 			break;
     75 		}
     76 
     77 		tprintf(", key=%u", (unsigned) msqid_ds.msg_perm.__key);
     78 		printuid(", cuid=", msqid_ds.msg_perm.cuid);
     79 		printuid(", cgid=", msqid_ds.msg_perm.cgid);
     80 		tprints("}");
     81 		tprintf(", msg_stime=%u", (unsigned) msqid_ds.msg_stime);
     82 		tprintf(", msg_rtime=%u", (unsigned) msqid_ds.msg_rtime);
     83 		tprintf(", msg_ctime=%u", (unsigned) msqid_ds.msg_ctime);
     84 		tprintf(", msg_qnum=%u", (unsigned) msqid_ds.msg_qnum);
     85 		tprintf(", msg_qbytes=%u", (unsigned) msqid_ds.msg_qbytes);
     86 		tprintf(", msg_lspid=%u", (unsigned) msqid_ds.msg_lspid);
     87 		tprintf(", msg_lrpid=%u", (unsigned) msqid_ds.msg_lrpid);
     88 		tprints("}");
     89 		break;
     90 
     91 	default:
     92 		printaddr(addr);
     93 		break;
     94 	}
     95 }
     96 
     97 SYS_FUNC(msgctl)
     98 {
     99 	if (entering(tcp)) {
    100 		tprintf("%lu, ", tcp->u_arg[0]);
    101 		PRINTCTL(msgctl_flags, tcp->u_arg[1], "MSG_???");
    102 		tprints(", ");
    103 	} else {
    104 		const long addr = tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2];
    105 		print_msqid_ds(tcp, addr, tcp->u_arg[1]);
    106 	}
    107 	return 0;
    108 }
    109