diff options
| -rw-r--r-- | linux-user/syscall.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 7bf99beb18..6091a449fb 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -813,6 +813,12 @@ safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr, safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, size_t, len, unsigned *, prio, const struct timespec *, timeout) #endif +#if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) +safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff, + int, outfd, loff_t *, poutoff, size_t, length, + unsigned int, flags) +#endif + /* We do ioctl like this rather than via safe_syscall3 to preserve the * "third argument might be integer or pointer or not present" behaviour of * the libc function. @@ -13065,6 +13071,42 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return get_errno(membarrier(arg1, arg2)); #endif +#if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range) + case TARGET_NR_copy_file_range: + { + loff_t inoff, outoff; + loff_t *pinoff = NULL, *poutoff = NULL; + + if (arg2) { + if (get_user_u64(inoff, arg2)) { + return -TARGET_EFAULT; + } + pinoff = &inoff; + } + if (arg4) { + if (get_user_u64(outoff, arg4)) { + return -TARGET_EFAULT; + } + poutoff = &outoff; + } + ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff, + arg5, arg6)); + if (!is_error(ret) && ret > 0) { + if (arg2) { + if (put_user_u64(inoff, arg2)) { + return -TARGET_EFAULT; + } + } + if (arg4) { + if (put_user_u64(outoff, arg4)) { + return -TARGET_EFAULT; + } + } + } + } + return ret; +#endif + default: qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); return -TARGET_ENOSYS; |