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Kernel: Add a writev() syscall for writing multiple buffers in one go.

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We then use this immediately in the WindowServer/LibGUI communication in
order to send both message + optional "extra data" with a single syscall.
This commit is contained in:
Andreas Kling 2019-05-10 03:19:25 +02:00
parent e6443649cb
commit 99aead4857
8 changed files with 111 additions and 54 deletions
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2
Kernel/Syscall.cpp
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@ -267,6 +267,8 @@ static dword handle(RegisterDump& regs, dword function, dword arg1, dword arg2,
return current->process().sys$systrace((pid_t)arg1);
case Syscall::SC_mknod:
return current->process().sys$mknod((const char*)arg1, (mode_t)arg2, (dev_t)arg3);
case Syscall::SC_writev:
return current->process().sys$writev((int)arg1, (const struct iovec*)arg2, (int)arg3);
default:
kprintf("<%u> int0x82: Unknown function %u requested {%x, %x, %x}\n", current->process().pid(), function, arg1, arg2, arg3);
break;