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serenity/Kernel/Syscalls
Liav A ed67a877a3 Kernel+SystemServer+Base: Introduce the RAMFS filesystem
This filesystem is based on the code of the long-lived TmpFS. It differs
from that filesystem in one keypoint - its root inode doesn't have a
sticky bit on it.

Therefore, we mount it on /dev, to ensure only root can modify files on
that directory. In addition to that, /tmp is mounted directly in the
SystemServer main (start) code, so it's no longer specified in the fstab
file. We ensure that /tmp has a sticky bit and has the value 0777 for
root directory permissions, which is certainly a special case when using
RAM-backed (and in general other) filesystems.

Because of these 2 changes, it's no longer needed to maintain the TmpFS
filesystem, hence it's removed (renamed to RAMFS), because the RAMFS
represents the purpose of this filesystem in a much better way - it
relies on being backed by RAM "storage", and therefore it's easy to
conclude it's temporary and volatile, so its content is gone on either
system shutdown or unmounting of the filesystem.
2023-02-04 15:32:45 -07:00
..
alarm.cpp Kernel: Make self-contained locking smart pointers their own classes 2022-08-20 17:20:43 +02:00
anon_create.cpp Kernel/Syscall: Make anon_create to not use Process::allocate_fd method 2022-08-21 10:56:48 +01:00
beep.cpp Kernel: Reorganize Arch/x86 directory to Arch/x86_64 after i686 removal 2022-12-28 11:53:41 +01:00
chdir.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
chmod.cpp Kernel: Make File::{chown,chmod} take credentials as input 2022-08-21 16:15:29 +02:00
chown.cpp Kernel/FileSystem: Add a few missing includes 2022-10-22 16:57:52 -04:00
clock.cpp Kernel: Wrap process address spaces in SpinlockProtected 2022-08-24 14:57:51 +02:00
debug.cpp Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
disown.cpp Kernel: Add support for jails 2022-11-05 18:00:58 -06:00
dup2.cpp Kernel: Mark sys$dup2() as not needing the big lock 2022-03-09 16:43:00 +01:00
emuctl.cpp Kernel: Mark sys$emuctl() as not needing the big lock 2022-03-09 16:43:00 +01:00
execve.cpp Kernel: Add Syscalls/execve.cpp to aarch64 build 2023-01-27 20:47:08 +00:00
exit.cpp Kernel: Factor our PreviousMode into RegisterState::previous_mode 2023-01-27 11:41:43 +01:00
faccessat.cpp Kernel+LibC+LibCore+UserspaceEmulator: Implement faccessat(2) 2022-12-11 19:55:37 -07:00
fallocate.cpp Kernel: Add some spec links and comments to sys$posix_fallocate() 2022-11-29 11:09:19 +01:00
fcntl.cpp Kernel: Support F_SETLKW in fcntl 2022-07-21 16:39:22 +02:00
fork.cpp Kernel: Add Syscalls/fork.cpp to aarch64 build 2023-01-27 20:47:08 +00:00
fsync.cpp Kernel: Mark sys$fsync() as not needing the big lock 2022-03-08 00:19:49 +01:00
ftruncate.cpp Kernel: Mark sys$ftruncate() as not needing the big lock 2022-03-09 16:43:00 +01:00
futex.cpp Kernel: Turn lock ranks into template parameters 2023-01-02 18:15:27 -05:00
get_dir_entries.cpp Kernel: Convert process file descriptor table to a SpinlockProtected 2022-01-29 02:17:06 +01:00
get_stack_bounds.cpp Kernel: Wrap process address spaces in SpinlockProtected 2022-08-24 14:57:51 +02:00
getrandom.cpp Kernel: Handle promise violations in the syscall handler 2021-12-29 18:08:15 +01:00
getuid.cpp Kernel: Use Process::credentials() and remove user ID/group ID helpers 2022-08-22 12:46:32 +02:00
hostname.cpp Kernel: Use Process::credentials() and remove user ID/group ID helpers 2022-08-22 12:46:32 +02:00
inode_watcher.cpp Kernel/FileSystem: Add a few missing includes 2022-10-22 16:57:52 -04:00
ioctl.cpp Kernel+Userland: Move LibC/sys/ioctl_numbers to Kernel/API/Ioctl.h 2023-01-21 10:43:59 -07:00
jail.cpp Kernel+Userland: Move LibC/sys/ioctl_numbers to Kernel/API/Ioctl.h 2023-01-21 10:43:59 -07:00
keymap.cpp Kernel: Use Process::credentials() and remove user ID/group ID helpers 2022-08-22 12:46:32 +02:00
kill.cpp Kernel: Allow sending SIGCONT to processes in the same group 2023-01-03 18:13:11 +01:00
link.cpp Kernel+LibC+LibCore: Implement symlinkat(2) 2022-12-11 19:55:37 -07:00
lseek.cpp Kernel: Mark sys$lseek() as not needing the big lock 2022-03-09 16:43:00 +01:00
mkdir.cpp Kernel+LibC+LibCore: Implement mkdirat(2) 2022-12-11 19:55:37 -07:00
mknod.cpp Kernel: Make sys$mknod() not take the big lock 2022-08-22 17:56:03 +02:00
mmap.cpp Kernel: Add Syscalls/mmap.cpp to aarch64 build 2023-01-27 20:47:08 +00:00
mount.cpp Kernel+SystemServer+Base: Introduce the RAMFS filesystem 2023-02-04 15:32:45 -07:00
open.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
perf_event.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
pipe.cpp Kernel: Use Process::credentials() and remove user ID/group ID helpers 2022-08-22 12:46:32 +02:00
pledge.cpp AK+Everywhere: Turn bool keep_empty to an enum in split* functions 2022-10-24 23:29:18 +01:00
poll.cpp Kernel: Make self-contained locking smart pointers their own classes 2022-08-20 17:20:43 +02:00
prctl.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
process.cpp Kernel: Make sys$getppid() not take the big lock 2022-08-21 13:29:36 +02:00
profiling.cpp Kernel: Add support for jails 2022-11-05 18:00:58 -06:00
ptrace.cpp Kernel: Fix usermode verification in ptrace with PT_SETREGS 2023-02-03 17:39:13 +01:00
purge.cpp Kernel: Use Process::credentials() and remove user ID/group ID helpers 2022-08-22 12:46:32 +02:00
read.cpp Kernel: Make self-contained locking smart pointers their own classes 2022-08-20 17:20:43 +02:00
readlink.cpp Kernel+LibC: Implement readlinkat(2) 2022-12-11 19:55:37 -07:00
realpath.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
rename.cpp Kernel+LibC+LibCore: Implement renameat(2) 2022-12-11 19:55:37 -07:00
resource.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
rmdir.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
sched.cpp Kernel: Add support for jails 2022-11-05 18:00:58 -06:00
sendfd.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
setpgid.cpp Kernel: Require "stdio" pledge promise when calling get_root_session_id 2023-01-13 13:41:30 +01:00
setuid.cpp Kernel: Add sid and pgid to Credentials 2023-01-03 18:13:11 +01:00
sigaction.cpp Kernel: Remove i686 support 2022-12-28 11:53:41 +01:00
socket.cpp Kernel: Add support for MSG_NOSIGNAL and properly send SIGPIPE 2022-10-24 15:49:39 +02:00
stat.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
statvfs.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
sync.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
sysconf.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
thread.cpp Kernel: Move ThreadRegisters into arch-specific directory 2022-12-29 19:32:20 -07:00
times.cpp Kernel: Require semicolon after VERIFY_{NO_,}PROCESS_BIG_LOCK_ACQUIRED 2022-08-17 22:56:51 +02:00
umask.cpp Kernel: Guard Process "protected data" with a spinlock 2022-08-21 12:25:14 +02:00
uname.cpp Kernel: Remove i686 support 2022-12-28 11:53:41 +01:00
unlink.cpp Kernel: Make VirtualFileSystem functions take credentials as input 2022-08-21 16:02:24 +02:00
unveil.cpp Kernel+LibCore+LibC: Implement support for forcing unveil on exec 2022-11-26 12:42:15 -07:00
utime.cpp Kernel: Make sys$utime() and sys$utimensat() not take the big lock 2022-08-22 17:56:03 +02:00
utimensat.cpp Kernel: Update tv_nsec field when using utimensat() with UTIME_NOW 2022-11-24 16:56:27 +01:00
waitid.cpp Kernel: Add support for jails 2022-11-05 18:00:58 -06:00
write.cpp Kernel+LibC+Tests: Implement pwritev(2) 2022-12-11 19:55:37 -07:00