90 lines
2.4 KiB
C
90 lines
2.4 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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* Copyright (c) 2015-2018 The strace developers.
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* All rights reserved.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 *const tcp, const kernel_ulong_t 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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print_numeric_umode_t(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("%d, ", (int) 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 kernel_ulong_t 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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