RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 09:48:11 +00:00
Code Issues Activity Actions

Kernel+LibC+UserspaceEmulator: Bring back sys$dup2()

Browse source 
This is racy in userspace and non-racy in kernelspace so let's keep
it in kernelspace.

The behavior change where CLOEXEC is preserved when dup2() is called
with (old_fd == new_fd) was good though, let's keep that.
This commit is contained in:
Andreas Kling 2020-08-15 10:54:00 +02:00
parent bf247fb45f
commit 65f2270232
7 changed files with 59 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

1
Kernel/Process.h
View file

@ -258,6 +258,7 @@ public:
int sys$ptsname(int fd, Userspace<char*>, size_t);
pid_t sys$fork(RegisterState&);
int sys$execve(Userspace<const Syscall::SC_execve_params*>);
int sys$dup2(int old_fd, int new_fd);
int sys$sigaction(int signum, const sigaction* act, sigaction* old_act);
int sys$sigprocmask(int how, Userspace<const sigset_t*> set, Userspace<sigset_t*> old_set);
int sys$sigpending(Userspace<sigset_t*>);