beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-23 08:00:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

Kernel: Support F_DUPFD_CLOEXEC command to fcntl(2)

Browse source 
Specified by POSIX:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/fcntl.html
This commit is contained in:
Peter Elliott 2023-02-11 14:17:41 -07:00 committed by Linus Groh
parent 22c0e6b60e
commit 2808b03764
Notes: sideshowbarker 2024-07-17 01:12:07 +09:00 
Author: https://github.com/petelliott
Commit: https://github.com/SerenityOS/serenity/commit/2808b03764
Pull-request: https://github.com/SerenityOS/serenity/pull/17471
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/linusg
2 changed files with 3 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
Kernel/API/POSIX/fcntl.h
View file

@ -21,6 +21,7 @@ extern "C" {
#define F_GETLK 6
#define F_SETLK 7
#define F_SETLKW 8
#define F_DUPFD_CLOEXEC 9
#define FD_CLOEXEC 1

3
Kernel/Syscalls/fcntl.cpp
View file

@ -19,13 +19,14 @@ ErrorOr<FlatPtr> Process::sys$fcntl(int fd, int cmd, uintptr_t arg)
// NOTE: The FD flags are not shared between OpenFileDescription objects.
// This means that dup() doesn't copy the FD_CLOEXEC flag!
switch (cmd) {
case F_DUPFD_CLOEXEC:
case F_DUPFD: {
int arg_fd = (int)arg;
if (arg_fd < 0)
return EINVAL;
return m_fds.with_exclusive([&](auto& fds) -> ErrorOr<FlatPtr> {
auto fd_allocation = TRY(fds.allocate(arg_fd));
fds[fd_allocation.fd].set(*description);
fds[fd_allocation.fd].set(*description, (cmd == F_DUPFD_CLOEXEC) ? FD_CLOEXEC : 0);
return fd_allocation.fd;
});
}