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Add support for socket send/receive timeouts.

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Only the receive timeout is hooked up yet. You can change the timeout by
calling setsockopt(..., SOL_SOCKET, SO_RCVTIMEO, ...).

Use this mechanism to make /bin/ping report timeouts.
This commit is contained in:
Andreas Kling 2019-03-13 13:13:23 +01:00
parent 7bcd386338
commit 562663df7c
12 changed files with 212 additions and 12 deletions
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54
Kernel/Process.cpp
View file

@ -1589,13 +1589,17 @@ int Process::sys$sleep(unsigned seconds)
return 0;
}
void kgettimeofday(timeval& tv)
{
tv.tv_sec = RTC::now();
tv.tv_usec = (PIT::ticks_since_boot() % 1000) * 1000;
}
int Process::sys$gettimeofday(timeval* tv)
{
if (!validate_write_typed(tv))
return -EFAULT;
auto now = RTC::now();
tv->tv_sec = now;
tv->tv_usec = (PIT::ticks_since_boot() % 1000) * 1000;
kgettimeofday(*tv);
return 0;
}
@ -2567,6 +2571,50 @@ ssize_t Process::sys$recvfrom(const Syscall::SC_recvfrom_params* params)
return socket.recvfrom(buffer, buffer_length, flags, addr, addr_length);
}
int Process::sys$getsockopt(const Syscall::SC_getsockopt_params* params)
{
if (!validate_read_typed(params))
return -EFAULT;
int sockfd = params->sockfd;
int level = params->level;
int option = params->option;
auto* value = params->value;
auto* value_size = (socklen_t*)params->value_size;
if (!validate_write_typed(value_size))
return -EFAULT;
if (!validate_write(value, *value_size))
return -EFAULT;
auto* descriptor = file_descriptor(sockfd);
if (!descriptor)
return -EBADF;
if (!descriptor->is_socket())
return -ENOTSOCK;
auto& socket = *descriptor->socket();
return socket.getsockopt(level, option, value, value_size);
}
int Process::sys$setsockopt(const Syscall::SC_setsockopt_params* params)
{
if (!validate_read_typed(params))
return -EFAULT;
int sockfd = params->sockfd;
int level = params->level;
int option = params->option;
auto* value = params->value;
auto value_size = (socklen_t)params->value_size;
if (!validate_read(value, value_size))
return -EFAULT;
auto* descriptor = file_descriptor(sockfd);
if (!descriptor)
return -EBADF;
if (!descriptor->is_socket())
return -ENOTSOCK;
auto& socket = *descriptor->socket();
return socket.setsockopt(level, option, value, value_size);
}
struct SharedBuffer {
SharedBuffer(pid_t pid1, pid_t pid2, int size)
: m_pid1(pid1)