syscall.c (59c58f96b270f5edd4ad10954c3a96556cb3a728) syscall.c (524fa3408ed745a2fed0642fb0d92c934d10ff64)
1/*
2 * Linux syscalls
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or

--- 748 unchanged lines hidden (view full) ---

757safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
758 int, flags)
759safe_syscall2(int, nanosleep, const struct timespec *, req,
760 struct timespec *, rem)
761#ifdef TARGET_NR_clock_nanosleep
762safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
763 const struct timespec *, req, struct timespec *, rem)
764#endif
1/*
2 * Linux syscalls
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or

--- 748 unchanged lines hidden (view full) ---

757safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
758 int, flags)
759safe_syscall2(int, nanosleep, const struct timespec *, req,
760 struct timespec *, rem)
761#ifdef TARGET_NR_clock_nanosleep
762safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
763 const struct timespec *, req, struct timespec *, rem)
764#endif
765#if !defined(__NR_msgsnd) || !defined(__NR_msgrcv) || !defined(__NR_semtimedop)
766/* This host kernel architecture uses a single ipc syscall; fake up
767 * wrappers for the sub-operations to hide this implementation detail.
768 * Annoyingly we can't include linux/ipc.h to get the constant definitions
769 * for the call parameter because some structs in there conflict with the
770 * sys/ipc.h ones. So we just define them here, and rely on them being
771 * the same for all host architectures.
772 */
773#define Q_SEMTIMEDOP 4
774#define Q_MSGSND 11
775#define Q_MSGRCV 12
776#define Q_IPCCALL(VERSION, OP) ((VERSION) << 16 | (OP))
777
765#ifdef __NR_ipc
778safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
779 void *, ptr, long, fifth)
780#endif
781#ifdef __NR_msgsnd
782safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
783 int, flags)
766safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
767 void *, ptr, long, fifth)
768#endif
769#ifdef __NR_msgsnd
770safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
771 int, flags)
784#else
785static int safe_msgsnd(int msgid, const void *msgp, size_t sz, int flags)
786{
787 return safe_ipc(Q_IPCCALL(0, Q_MSGSND), msgid, sz, flags, (void *)msgp, 0);
788}
789#endif
790#ifdef __NR_msgrcv
791safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
792 long, msgtype, int, flags)
772#endif
773#ifdef __NR_msgrcv
774safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
775 long, msgtype, int, flags)
793#else
794static int safe_msgrcv(int msgid, void *msgp, size_t sz, long type, int flags)
795{
796 return safe_ipc(Q_IPCCALL(1, Q_MSGRCV), msgid, sz, flags, msgp, type);
797}
798#endif
799#ifdef __NR_semtimedop
800safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
801 unsigned, nsops, const struct timespec *, timeout)
776#endif
777#ifdef __NR_semtimedop
778safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
779 unsigned, nsops, const struct timespec *, timeout)
802#else
803static int safe_semtimedop(int semid, struct sembuf *tsops, unsigned nsops,
804 const struct timespec *timeout)
805{
806 return safe_ipc(Q_IPCCALL(0, Q_SEMTIMEDOP), semid, nsops, 0, tsops,
807 (long)timeout);
808}
809#endif
810#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
811safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
812 size_t, len, unsigned, prio, const struct timespec *, timeout)
813safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
814 size_t, len, unsigned *, prio, const struct timespec *, timeout)
815#endif
816/* We do ioctl like this rather than via safe_syscall3 to preserve the

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3524 unlock_user(target_sembuf, target_addr, 0);
3525
3526 return 0;
3527}
3528
3529static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
3530{
3531 struct sembuf sops[nsops];
780#endif
781#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
782safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
783 size_t, len, unsigned, prio, const struct timespec *, timeout)
784safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
785 size_t, len, unsigned *, prio, const struct timespec *, timeout)
786#endif
787/* We do ioctl like this rather than via safe_syscall3 to preserve the

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3495 unlock_user(target_sembuf, target_addr, 0);
3496
3497 return 0;
3498}
3499
3500static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
3501{
3502 struct sembuf sops[nsops];
3503 abi_long ret;
3532
3533 if (target_to_host_sembuf(sops, ptr, nsops))
3534 return -TARGET_EFAULT;
3535
3504
3505 if (target_to_host_sembuf(sops, ptr, nsops))
3506 return -TARGET_EFAULT;
3507
3536 return get_errno(safe_semtimedop(semid, sops, nsops, NULL));
3508 ret = -TARGET_ENOSYS;
3509#ifdef __NR_semtimedop
3510 ret = get_errno(safe_semtimedop(semid, sops, nsops, NULL));
3511#endif
3512#ifdef __NR_ipc
3513 if (ret == -TARGET_ENOSYS) {
3514 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, nsops, 0, sops, 0));
3515 }
3516#endif
3517 return ret;
3537}
3538
3539struct target_msqid_ds
3540{
3541 struct target_ipc_perm msg_perm;
3542 abi_ulong msg_stime;
3543#if TARGET_ABI_BITS == 32
3544 abi_ulong __unused1;

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3683 return -TARGET_EFAULT;
3684 host_mb = g_try_malloc(msgsz + sizeof(long));
3685 if (!host_mb) {
3686 unlock_user_struct(target_mb, msgp, 0);
3687 return -TARGET_ENOMEM;
3688 }
3689 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
3690 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
3518}
3519
3520struct target_msqid_ds
3521{
3522 struct target_ipc_perm msg_perm;
3523 abi_ulong msg_stime;
3524#if TARGET_ABI_BITS == 32
3525 abi_ulong __unused1;

--- 138 unchanged lines hidden (view full) ---

3664 return -TARGET_EFAULT;
3665 host_mb = g_try_malloc(msgsz + sizeof(long));
3666 if (!host_mb) {
3667 unlock_user_struct(target_mb, msgp, 0);
3668 return -TARGET_ENOMEM;
3669 }
3670 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
3671 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
3672 ret = -TARGET_ENOSYS;
3673#ifdef __NR_msgsnd
3691 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
3674 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
3675#endif
3676#ifdef __NR_ipc
3677 if (ret == -TARGET_ENOSYS) {
3678 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
3679 host_mb, 0));
3680 }
3681#endif
3692 g_free(host_mb);
3693 unlock_user_struct(target_mb, msgp, 0);
3694
3695 return ret;
3696}
3697
3698static inline abi_long do_msgrcv(int msqid, abi_long msgp,
3699 ssize_t msgsz, abi_long msgtyp,

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3711 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
3712 return -TARGET_EFAULT;
3713
3714 host_mb = g_try_malloc(msgsz + sizeof(long));
3715 if (!host_mb) {
3716 ret = -TARGET_ENOMEM;
3717 goto end;
3718 }
3682 g_free(host_mb);
3683 unlock_user_struct(target_mb, msgp, 0);
3684
3685 return ret;
3686}
3687
3688static inline abi_long do_msgrcv(int msqid, abi_long msgp,
3689 ssize_t msgsz, abi_long msgtyp,

--- 11 unchanged lines hidden (view full) ---

3701 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
3702 return -TARGET_EFAULT;
3703
3704 host_mb = g_try_malloc(msgsz + sizeof(long));
3705 if (!host_mb) {
3706 ret = -TARGET_ENOMEM;
3707 goto end;
3708 }
3709 ret = -TARGET_ENOSYS;
3710#ifdef __NR_msgrcv
3719 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
3711 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
3712#endif
3713#ifdef __NR_ipc
3714 if (ret == -TARGET_ENOSYS) {
3715 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
3716 msgflg, host_mb, msgtyp));
3717 }
3718#endif
3720
3721 if (ret > 0) {
3722 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
3723 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
3724 if (!target_mtext) {
3725 ret = -TARGET_EFAULT;
3726 goto end;
3727 }

--- 8013 unchanged lines hidden --- 		3719
3720 if (ret > 0) {
3721 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
3722 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
3723 if (!target_mtext) {
3724 ret = -TARGET_EFAULT;
3725 goto end;
3726 }

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