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Add sync() syscall and a /bin/sync.

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It walks all the live Inode objects and flushes pending metadata changes
wherever needed.

This could be optimized by keeping a separate list of dirty Inodes,
but let's not get ahead of ourselves.
This commit is contained in:
Andreas Kling 2018-12-20 00:39:29 +01:00
parent d0f06e5f3f
commit ed7ae6c02c
14 changed files with 78 additions and 24 deletions
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8
Kernel/Syscall.cpp
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@ -44,6 +44,12 @@ void initialize()
kprintf("syscall: int 0x80 handler installed\n");
}
static int sync()
{
VFS::the().sync();
return 0;
}
static dword handle(RegisterDump& regs, dword function, dword arg1, dword arg2, dword arg3)
{
ASSERT_INTERRUPTS_ENABLED();
@ -179,6 +185,8 @@ static dword handle(RegisterDump& regs, dword function, dword arg1, dword arg2,
return current->sys$times((Unix::tms*)arg1);
case Syscall::SC_utime:
return current->sys$utime((const char*)arg1, (const Unix::utimbuf*)arg2);
case Syscall::SC_sync:
return sync();
default:
kprintf("<%u> int0x80: Unknown function %u requested {%x, %x, %x}\n", current->pid(), function, arg1, arg2, arg3);
break;