strace/ipc_shmctl.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 DEF_MPERS_TYPE(shmid_ds_t)
#include "ipc_defs.h"
#ifdef HAVE_SYS_SHM_H
/* The C library generally exports the struct the current kernel expects. */
# include <sys/shm.h>
typedef struct shmid_ds shmid_ds_t;
#elif defined HAVE_LINUX_SHM_H
/* The linux header might provide the right struct. */
# include <linux/shm.h>
typedef struct shmid64_ds shmid_ds_t;
#endif
#include MPERS_DEFS
#include "xlat/shmctl_flags.h"
static void
print_shmid_ds(struct tcb *const tcp, const kernel_ureg_t addr, int cmd)
{
/* TODO: We don't properly decode old compat ipc calls. */
if (cmd & IPC_64)
cmd &= ~IPC_64;
shmid_ds_t shmid_ds;
switch (cmd) {
case IPC_SET:
case IPC_STAT:
if (umove_or_printaddr(tcp, addr, &shmid_ds))
return;
tprints("{shm_perm={");
printuid("uid=", shmid_ds.shm_perm.uid);
printuid(", gid=", shmid_ds.shm_perm.gid);
tprints(", mode=");
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(shmid_ds.shm_perm.mode);
if (cmd != IPC_STAT) {
tprints("}, ...}");
break;
}
tprintf(", key=%u", (unsigned) shmid_ds.shm_perm.__key);
printuid(", cuid=", shmid_ds.shm_perm.cuid);
printuid(", cgid=", shmid_ds.shm_perm.cgid);
tprints("}");
tprintf(", shm_segsz=%u", (unsigned) shmid_ds.shm_segsz);
tprintf(", shm_cpid=%u", (unsigned) shmid_ds.shm_cpid);
tprintf(", shm_lpid=%u", (unsigned) shmid_ds.shm_lpid);
tprintf(", shm_nattch=%u", (unsigned) shmid_ds.shm_nattch);
tprintf(", shm_atime=%u", (unsigned) shmid_ds.shm_atime);
tprintf(", shm_dtime=%u", (unsigned) shmid_ds.shm_dtime);
tprintf(", shm_ctime=%u", (unsigned) shmid_ds.shm_ctime);
tprints("}");
break;
default:
printaddr(addr);
break;
}
}
SYS_FUNC(shmctl)
{
if (entering(tcp)) {
tprintf("%d, ", (int) tcp->u_arg[0]);
PRINTCTL(shmctl_flags, tcp->u_arg[1], "SHM_???");
tprints(", ");
} else {
const kernel_ureg_t addr = tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2];
print_shmid_ds(tcp, addr, tcp->u_arg[1]);
}
return 0;
}