strace/ipc_msg.c

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/*
* Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 2003-2006 Roland McGrath <roland@redhat.com>
* Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include "ipc_defs.h"
#ifdef HAVE_SYS_MSG_H
# include <sys/msg.h>
#elif defined HAVE_LINUX_MSG_H
# include <linux/msg.h>
#endif
#include "xlat/ipc_msg_flags.h"
#include "xlat/resource_flags.h"
SYS_FUNC(msgget)
{
if (tcp->u_arg[0])
tprintf("%#lx, ", tcp->u_arg[0]);
else
tprints("IPC_PRIVATE, ");
if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0)
tprints("|");
Fix printing of mode_t, umode_t, and umask types Print numeric umode_t type using %#03ho format. Print return value of umask syscall using %#03lo format. When printing symbolic mode_t type, always print lower 9 bits, and print the numeric part using %#03o format. * defs.h (sprintmode): Remove. (print_symbolic_mode_t, print_numeric_umode_t, print_numeric_long_umask): New prototypes. * printmode.c (sprintmode): Remove. (print_symbolic_mode_t, print_numeric_umode_t, print_numeric_long_umask): New functions. * chmod.c (decode_chmod): Use print_numeric_umode_t. * ipc_msg.c (SYS_FUNC(msgget)): Likewise. * ipc_msgctl.c (print_msqid_ds): Likewise. * ipc_sem.c (SYS_FUNC(semget)): Likewise. * ipc_shm.c (SYS_FUNC(shmget)): Likewise. * ipc_shmctl.c (print_shmid_ds): Likewise. * mq.c (SYS_FUNC(mq_open)): Likewise. * open.c (decode_open, SYS_FUNC(creat)): Likewise. * umask.c (SYS_FUNC(umask)): Likewise. * mknod.c (decode_mknod): Use print_symbolic_mode_t. * printstat.h (DO_PRINTSTAT): Likewise. * syscall.c (trace_syscall_exiting): Use print_numeric_long_umask. * tests/umode_t.c: New file. * tests/Makefile.am (EXTRA_DIST): Add it. * tests/creat.c: Rewrite as a thin wrapper around umode_t.c * tests/mkdir.c: Likewise. * tests/mkdirat.c: Likewise. * tests/mknod.c: Extend test coverage of mknod syscall. * tests/mknodat.c: Extend test coverage of mknodat syscall. * tests/umask.c: Extend test coverage of umask syscall. * tests/creat.test: Update the value specified for strace -a parameter. * tests/mkdir.test: Likewise. * tests/mkdirat.test: Likewise. * tests/mknodat.test: Likewise.
2016-08-03 17:05:39 +03:00
print_numeric_umode_t(tcp->u_arg[1] & 0777);
return RVAL_DECODED;
}
static void
tprint_msgsnd(struct tcb *tcp, const long addr, const unsigned long count,
const unsigned long flags)
{
tprint_msgbuf(tcp, addr, count);
printflags(ipc_msg_flags, flags, "MSG_???");
}
SYS_FUNC(msgsnd)
{
tprintf("%d, ", (int) tcp->u_arg[0]);
if (indirect_ipccall(tcp)) {
tprint_msgsnd(tcp, tcp->u_arg[3], tcp->u_arg[1],
tcp->u_arg[2]);
} else {
tprint_msgsnd(tcp, tcp->u_arg[1], tcp->u_arg[2],
tcp->u_arg[3]);
}
return RVAL_DECODED;
}
static void
tprint_msgrcv(struct tcb *tcp, const long addr, const unsigned long count,
const long msgtyp)
{
tprint_msgbuf(tcp, addr, count);
tprintf("%ld, ", msgtyp);
}
static int
fetch_msgrcv_args(struct tcb *tcp, const long addr, unsigned long *pair)
{
if (current_wordsize == sizeof(*pair)) {
if (umoven_or_printaddr(tcp, addr, 2 * sizeof(*pair), pair))
return -1;
} else {
unsigned int tmp[2];
if (umove_or_printaddr(tcp, addr, &tmp))
return -1;
pair[0] = tmp[0];
pair[1] = tmp[1];
}
return 0;
}
SYS_FUNC(msgrcv)
{
if (entering(tcp)) {
tprintf("%d, ", (int) tcp->u_arg[0]);
} else {
if (indirect_ipccall(tcp)) {
const bool direct =
#ifdef SPARC64
current_wordsize == 8 ||
#endif
get_tcb_priv_ulong(tcp) != 0;
if (direct) {
tprint_msgrcv(tcp, tcp->u_arg[3],
tcp->u_arg[1], tcp->u_arg[4]);
} else {
unsigned long pair[2];
if (fetch_msgrcv_args(tcp, tcp->u_arg[3], pair))
tprintf(", %lu, ", tcp->u_arg[1]);
else
tprint_msgrcv(tcp, pair[0],
tcp->u_arg[1], pair[1]);
}
printflags(ipc_msg_flags, tcp->u_arg[2], "MSG_???");
} else {
tprint_msgrcv(tcp, tcp->u_arg[1],
tcp->u_arg[2], tcp->u_arg[3]);
printflags(ipc_msg_flags, tcp->u_arg[4], "MSG_???");
}
}
return 0;
}