Revision 38d840e6 linux-user/syscall.c

b/linux-user/syscall.c
3437 3437 
        ret = 0; /* avoid warning */
3438 3438 
        break;
3439 3439 
    case TARGET_NR_read:
3440 
        if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
3441 
            goto efault;
3442 
        ret = get_errno(read(arg1, p, arg3));
3443 
        unlock_user(p, arg2, ret);
3440 
        if (arg3 == 0)
3441 
            ret = 0;
3442 
        else {
3443 
            if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
3444 
                goto efault;
3445 
            ret = get_errno(read(arg1, p, arg3));
3446 
            unlock_user(p, arg2, ret);
3447 
        }
3444 3448 
        break;
3445 3449 
    case TARGET_NR_write:
3446 3450 
        if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
......
3941 3945 
        goto unimplemented;
3942 3946 
#endif
3943 3947 
    case TARGET_NR_acct:
3944 
        if (!(p = lock_user_string(arg1)))
3945 
            goto efault;
3946 
        ret = get_errno(acct(path(p)));
3947 
        unlock_user(p, arg1, 0);
3948 
        if (arg1 == 0) {
3949 
            ret = get_errno(acct(NULL));
3950 
        } else {
3951 
            if (!(p = lock_user_string(arg1)))
3952 
                goto efault;
3953 
            ret = get_errno(acct(path(p)));
3954 
            unlock_user(p, arg1, 0);
3955 
        }
3948 3956 
        break;
3949 3957 
#ifdef TARGET_NR_umount2 /* not on alpha */
3950 3958 
    case TARGET_NR_umount2:

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