/*
- * 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) 2016 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 1999-2018 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
#include "defs.h"
-#ifdef HAVE_MQUEUE_H
-# include <mqueue.h>
-#endif
-#include <fcntl.h>
-#include <sys/ipc.h>
-#include <sys/sem.h>
-#include <sys/msg.h>
-#include <sys/shm.h>
+#include "xlat/ipccalls.h"
-#ifndef MSG_STAT
-#define MSG_STAT 11
-#endif
-#ifndef MSG_INFO
-#define MSG_INFO 12
-#endif
-#ifndef SHM_STAT
-#define SHM_STAT 13
-#endif
-#ifndef SHM_INFO
-#define SHM_INFO 14
-#endif
-#ifndef SEM_STAT
-#define SEM_STAT 18
-#endif
-#ifndef SEM_INFO
-#define SEM_INFO 19
-#endif
-
-#if !defined IPC_64
-# define IPC_64 0x100
-#endif
-
-extern void printsigevent(struct tcb *tcp, long arg);
-
-static const struct xlat msgctl_flags[] = {
- { IPC_RMID, "IPC_RMID" },
- { IPC_SET, "IPC_SET" },
- { IPC_STAT, "IPC_STAT" },
- { IPC_INFO, "IPC_INFO" },
- { MSG_STAT, "MSG_STAT" },
- { MSG_INFO, "MSG_INFO" },
- { 0, NULL },
-};
-
-static const struct xlat semctl_flags[] = {
- { IPC_RMID, "IPC_RMID" },
- { IPC_SET, "IPC_SET" },
- { IPC_STAT, "IPC_STAT" },
- { IPC_INFO, "IPC_INFO" },
- { SEM_STAT, "SEM_STAT" },
- { SEM_INFO, "SEM_INFO" },
- { GETPID, "GETPID" },
- { GETVAL, "GETVAL" },
- { GETALL, "GETALL" },
- { GETNCNT, "GETNCNT" },
- { GETZCNT, "GETZCNT" },
- { SETVAL, "SETVAL" },
- { SETALL, "SETALL" },
- { 0, NULL },
-};
-
-static const struct xlat shmctl_flags[] = {
- { IPC_RMID, "IPC_RMID" },
- { IPC_SET, "IPC_SET" },
- { IPC_STAT, "IPC_STAT" },
- { IPC_INFO, "IPC_INFO" },
- { SHM_STAT, "SHM_STAT" },
- { SHM_INFO, "SHM_INFO" },
-#ifdef SHM_LOCK
- { SHM_LOCK, "SHM_LOCK" },
-#endif
-#ifdef SHM_UNLOCK
- { SHM_UNLOCK, "SHM_UNLOCK" },
-#endif
- { 0, NULL },
-};
-
-static const struct xlat resource_flags[] = {
- { IPC_CREAT, "IPC_CREAT" },
- { IPC_EXCL, "IPC_EXCL" },
- { IPC_NOWAIT, "IPC_NOWAIT" },
- { 0, NULL },
-};
-
-static const struct xlat shm_resource_flags[] = {
- { IPC_CREAT, "IPC_CREAT" },
- { IPC_EXCL, "IPC_EXCL" },
-#ifdef SHM_HUGETLB
- { SHM_HUGETLB, "SHM_HUGETLB" },
-#endif
- { 0, NULL },
-};
-
-static const struct xlat shm_flags[] = {
- { SHM_REMAP, "SHM_REMAP" },
- { SHM_RDONLY, "SHM_RDONLY" },
- { SHM_RND, "SHM_RND" },
- { 0, NULL },
-};
-
-static const struct xlat msg_flags[] = {
- { MSG_NOERROR, "MSG_NOERROR" },
- { MSG_EXCEPT, "MSG_EXCEPT" },
- { IPC_NOWAIT, "IPC_NOWAIT" },
- { 0, NULL },
-};
-
-static const struct xlat semop_flags[] = {
- { SEM_UNDO, "SEM_UNDO" },
- { IPC_NOWAIT, "IPC_NOWAIT" },
- { 0, NULL },
-};
-
-int sys_msgget(struct tcb *tcp)
-{
- if (entering(tcp)) {
- if (tcp->u_arg[0])
- tprintf("%#lx", tcp->u_arg[0]);
- else
- tprints("IPC_PRIVATE");
- tprints(", ");
- if (printflags(resource_flags, tcp->u_arg[1] & ~0777, NULL) != 0)
- tprints("|");
- tprintf("%#lo", tcp->u_arg[1] & 0777);
- }
- return 0;
-}
-
-#ifdef IPC_64
-# define PRINTCTL(flagset, arg, dflt) \
- if ((arg) & IPC_64) tprints("IPC_64|"); \
- printxval((flagset), (arg) &~ IPC_64, dflt)
-#else
-# define PRINTCTL printxval
-#endif
-
-static int
-indirect_ipccall(struct tcb *tcp)
-{
-#ifdef X86_64
- return current_personality == 1;
-#endif
-#if defined IA64
- return tcp->scno < 1024; /* ia32 emulation syscalls are low */
-#endif
-#if defined(ALPHA) || defined(MIPS) || defined(HPPA) || defined(__ARM_EABI__)
- return 0;
-#endif
- return 1;
-}
-
-int sys_msgctl(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%lu, ", tcp->u_arg[0]);
- PRINTCTL(msgctl_flags, tcp->u_arg[1], "MSG_???");
- tprintf(", %#lx", tcp->u_arg[indirect_ipccall(tcp) ? 3 : 2]);
- }
- return 0;
-}
-
-static void
-tprint_msgsnd(struct tcb *tcp, long addr, unsigned long count,
- unsigned long flags)
-{
- long mtype;
-
- if (umove(tcp, addr, &mtype) < 0) {
- tprintf("%#lx", addr);
- } else {
- tprintf("{%lu, ", mtype);
- printstr(tcp, addr + sizeof(mtype), count);
- tprints("}");
- }
- tprintf(", %lu, ", count);
- printflags(msg_flags, flags, "MSG_???");
-}
-
-int sys_msgsnd(struct tcb *tcp)
-{
- if (entering(tcp)) {
- 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 0;
-}
-
-static void
-tprint_msgrcv(struct tcb *tcp, long addr, unsigned long count, long msgtyp)
-{
- long mtype;
-
- if (syserror(tcp) || umove(tcp, addr, &mtype) < 0) {
- tprintf("%#lx", addr);
- } else {
- tprintf("{%lu, ", mtype);
- printstr(tcp, addr + sizeof(mtype), count);
- tprints("}");
- }
- tprintf(", %lu, %ld, ", count, msgtyp);
-}
-
-int sys_msgrcv(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%d, ", (int) tcp->u_arg[0]);
- } else {
- if (indirect_ipccall(tcp)) {
- struct ipc_wrapper {
- struct msgbuf *msgp;
- long msgtyp;
- } tmp;
-
- if (umove(tcp, tcp->u_arg[3], &tmp) < 0) {
- tprintf("%#lx, %lu, ",
- tcp->u_arg[3], tcp->u_arg[1]);
- } else {
- tprint_msgrcv(tcp, (long) tmp.msgp,
- tcp->u_arg[1], tmp.msgtyp);
- }
- printflags(msg_flags, tcp->u_arg[2], "MSG_???");
- } else {
- tprint_msgrcv(tcp, tcp->u_arg[1],
- tcp->u_arg[2], tcp->u_arg[3]);
- printflags(msg_flags, tcp->u_arg[4], "MSG_???");
- }
- }
- return 0;
-}
-
-static void
-tprint_sembuf(struct tcb *tcp, long addr, unsigned long count)
-{
- unsigned long i, max_count;
-
- if (abbrev(tcp))
- max_count = (max_strlen < count) ? max_strlen : count;
- else
- max_count = count;
-
- if (!max_count) {
- tprintf("%#lx, %lu", addr, count);
- return;
- }
-
- for (i = 0; i < max_count; ++i) {
- struct sembuf sb;
- if (i)
- tprints(", ");
- if (umove(tcp, addr + i * sizeof(struct sembuf), &sb) < 0) {
- if (i) {
- tprints("{???}");
- break;
- } else {
- tprintf("%#lx, %lu", addr, count);
- return;
- }
- } else {
- if (!i)
- tprints("{");
- tprintf("{%u, %d, ", sb.sem_num, sb.sem_op);
- printflags(semop_flags, sb.sem_flg, "SEM_???");
- tprints("}");
- }
- }
-
- if (i < max_count || max_count < count)
- tprints(", ...");
-
- tprintf("}, %lu", count);
-}
-
-int sys_semop(struct tcb *tcp)
+SYS_FUNC(ipc)
{
- if (entering(tcp)) {
- tprintf("%lu, ", tcp->u_arg[0]);
- if (indirect_ipccall(tcp)) {
- tprint_sembuf(tcp, tcp->u_arg[3], tcp->u_arg[1]);
- } else {
- tprint_sembuf(tcp, tcp->u_arg[1], tcp->u_arg[2]);
- }
- }
- return 0;
-}
+ unsigned int call = tcp->u_arg[0];
+ unsigned int version = call >> 16;
+ call &= 0xffff;
-int sys_semtimedop(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%lu, ", tcp->u_arg[0]);
- if (indirect_ipccall(tcp)) {
- tprint_sembuf(tcp, tcp->u_arg[3], tcp->u_arg[1]);
- tprints(", ");
-#if defined(S390)
- printtv(tcp, tcp->u_arg[2]);
-#else
- printtv(tcp, tcp->u_arg[5]);
-#endif
- } else {
- tprint_sembuf(tcp, tcp->u_arg[1], tcp->u_arg[2]);
- tprints(", ");
- printtv(tcp, tcp->u_arg[3]);
- }
- }
- return 0;
-}
+ if (version)
+ tprintf("%u<<16|", version);
-int sys_semget(struct tcb *tcp)
-{
- if (entering(tcp)) {
- if (tcp->u_arg[0])
- tprintf("%#lx", tcp->u_arg[0]);
- else
- tprints("IPC_PRIVATE");
- tprintf(", %lu", tcp->u_arg[1]);
- tprints(", ");
- if (printflags(resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
- tprints("|");
- tprintf("%#lo", tcp->u_arg[2] & 0777);
- }
- return 0;
-}
+ printxval_u(ipccalls, call, NULL);
-int sys_semctl(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%lu", tcp->u_arg[0]);
- tprintf(", %lu, ", tcp->u_arg[1]);
- PRINTCTL(semctl_flags, tcp->u_arg[2], "SEM_???");
- tprintf(", %#lx", tcp->u_arg[3]);
- }
- return 0;
-}
+ unsigned int i;
+ for (i = 1; i < tcp->s_ent->nargs; ++i)
+ tprintf(", %#" PRI_klx, tcp->u_arg[i]);
-int sys_shmget(struct tcb *tcp)
-{
- if (entering(tcp)) {
- if (tcp->u_arg[0])
- tprintf("%#lx", tcp->u_arg[0]);
- else
- tprints("IPC_PRIVATE");
- tprintf(", %lu", tcp->u_arg[1]);
- tprints(", ");
- if (printflags(shm_resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
- tprints("|");
- tprintf("%#lo", tcp->u_arg[2] & 0777);
- }
- return 0;
-}
-
-int sys_shmctl(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%lu, ", tcp->u_arg[0]);
- PRINTCTL(shmctl_flags, tcp->u_arg[1], "SHM_???");
- if (indirect_ipccall(tcp)) {
- tprintf(", %#lx", tcp->u_arg[3]);
- } else {
- tprintf(", %#lx", tcp->u_arg[2]);
- }
- }
- return 0;
-}
-
-int sys_shmat(struct tcb *tcp)
-{
- if (exiting(tcp)) {
- tprintf("%lu", tcp->u_arg[0]);
- if (indirect_ipccall(tcp)) {
- tprintf(", %#lx", tcp->u_arg[3]);
- tprints(", ");
- printflags(shm_flags, tcp->u_arg[1], "SHM_???");
- } else {
- tprintf(", %#lx", tcp->u_arg[1]);
- tprints(", ");
- printflags(shm_flags, tcp->u_arg[2], "SHM_???");
- }
- if (syserror(tcp))
- return 0;
- if (indirect_ipccall(tcp)) {
- unsigned long raddr;
- if (umove(tcp, tcp->u_arg[2], &raddr) < 0)
- return RVAL_NONE;
- tcp->u_rval = raddr;
- }
- return RVAL_HEX;
- }
- return 0;
-}
-
-int sys_shmdt(struct tcb *tcp)
-{
- if (entering(tcp)) {
- if (indirect_ipccall(tcp)) {
- tprintf("%#lx", tcp->u_arg[3]);
- } else {
- tprintf("%#lx", tcp->u_arg[0]);
- }
- }
- return 0;
-}
-
-int
-sys_mq_open(struct tcb *tcp)
-{
- if (entering(tcp)) {
- printpath(tcp, tcp->u_arg[0]);
- tprints(", ");
- /* flags */
- tprint_open_modes(tcp->u_arg[1]);
- if (tcp->u_arg[1] & O_CREAT) {
-# ifndef HAVE_MQUEUE_H
- tprintf(", %lx", tcp->u_arg[2]);
-# else
- struct mq_attr attr;
- /* mode */
- tprintf(", %#lo, ", tcp->u_arg[2]);
- if (umove(tcp, tcp->u_arg[3], &attr) < 0)
- tprints("{ ??? }");
- else
- tprintf("{mq_maxmsg=%ld, mq_msgsize=%ld}",
- (long) attr.mq_maxmsg,
- (long) attr.mq_msgsize);
-# endif
- }
- }
- return 0;
-}
-
-int
-sys_mq_timedsend(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%ld, ", tcp->u_arg[0]);
- printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
- tprintf(", %lu, %ld, ", tcp->u_arg[2], tcp->u_arg[3]);
- printtv(tcp, tcp->u_arg[4]);
- }
- return 0;
-}
-
-int
-sys_mq_timedreceive(struct tcb *tcp)
-{
- if (entering(tcp))
- tprintf("%ld, ", tcp->u_arg[0]);
- else {
- printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
- tprintf(", %lu, %ld, ", tcp->u_arg[2], tcp->u_arg[3]);
- printtv(tcp, tcp->u_arg[4]);
- }
- return 0;
-}
-
-int
-sys_mq_notify(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%ld, ", tcp->u_arg[0]);
- printsigevent(tcp, tcp->u_arg[1]);
- }
- return 0;
-}
-
-static void
-printmqattr(struct tcb *tcp, long addr)
-{
- if (addr == 0)
- tprints("NULL");
- else {
-# ifndef HAVE_MQUEUE_H
- tprintf("%#lx", addr);
-# else
- struct mq_attr attr;
- if (umove(tcp, addr, &attr) < 0) {
- tprints("{...}");
- return;
- }
- tprints("{mq_flags=");
- tprint_open_modes(attr.mq_flags);
- tprintf(", mq_maxmsg=%ld, mq_msgsize=%ld, mq_curmsg=%ld}",
- (long) attr.mq_maxmsg, (long) attr.mq_msgsize,
- (long) attr.mq_curmsgs);
-# endif
- }
-}
-
-int
-sys_mq_getsetattr(struct tcb *tcp)
-{
- if (entering(tcp)) {
- tprintf("%ld, ", tcp->u_arg[0]);
- printmqattr(tcp, tcp->u_arg[1]);
- tprints(", ");
- } else
- printmqattr(tcp, tcp->u_arg[2]);
- return 0;
-}
-
-int
-sys_ipc(struct tcb *tcp)
-{
- return printargs(tcp);
+ return RVAL_DECODED;
}
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