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139 commits

Author SHA1 Message Date
Andreas Kling
b6efd66d56 Kernel: Use move semantics in sys$sendfd() 
Avoid an unnecessary NonnullRefPtr<OpenFileDescription> copy.
 2021-09-15 21:09:47 +02:00
Andreas Kling
308773ffda Kernel/Net: Add a special SOCKET_TRY() and use it in socket code 
Sockets remember their last error code in the SO_ERROR field, so we need
to take special care to remember this when returning an error.

This patch adds a SOCKET_TRY() that works like TRY() but also calls
set_so_error() on the failure path.

There's probably a lot more code that should be using this, but that's
outside the scope of this patch.
 2021-09-07 15:05:51 +02:00
Andreas Kling
01993d0af3 Kernel: Make DoubleBuffer::try() return KResultOr 
This tidies up error propagation in a number of places.
 2021-09-07 13:53:14 +02:00
Andreas Kling
4a9c18afb9 Kernel: Rename FileDescription => OpenFileDescription 
Dr. POSIX really calls these "open file description", not just
"file description", so let's call them exactly that. :^)
 2021-09-07 13:53:14 +02:00
Andreas Kling
a2bf8244fe Kernel: Use TRY() once more in LocalSocket::try_create_connected_pair() 2021-09-06 20:26:03 +02:00
Andreas Kling
56a2594de7 Kernel: Make KString factories return KResultOr + use TRY() everywhere 
There are a number of places that don't have an error propagation path
right now, so I've added FIXME's about that.
 2021-09-06 19:25:36 +02:00
Andreas Kling
48a0b31c47 Kernel: Make copy_{from,to}_user() return KResult and use TRY() 
This makes EFAULT propagation flow much more naturally. :^)
 2021-09-05 17:38:37 +02:00
Andreas Kling
81d3f823f7 Kernel: Use TRY() in LocalSocket 2021-09-05 14:08:12 +02:00
Owen Smith
22ec21bd61 Kernel: Don't VERIFY_NOT_REACHED in LocalSocket::has_attached_peer() 
Invoking sendmsg on a listening socket triggers this assertion as
sendto calls has_attached_peer before checking the result of
send_buffer_for.
 2021-08-31 16:00:53 +02:00
Andreas Kling
ed0e64943f Kernel: Rename Socket::lock() => Socket::mutex() 
"lock" is ambiguous (verb vs noun) while "mutex" is not.
 2021-08-29 22:19:42 +02:00
Andreas Kling
a28cd921a1 Kernel: Add Socket::set_role() and use it everywhere 
Instead of having Socket subclasses write their role into Socket::m_role
directly, add a setter to do this.
 2021-08-29 02:21:01 +02:00
Andreas Kling
70b2225b3d Kernel: Store LocalSocket address as a KString internally 
Just because we deal with sockaddr_un at the userspace API layer doesn't
mean we have to store an awkward C type internally. :^)
 2021-08-29 02:21:01 +02:00
Andreas Kling
48a1a3c0ce Kernel: Rename LocalSocket::create_connected_pair() => try_*() 2021-08-29 01:33:15 +02:00
Andreas Kling
7f96288535 Kernel: Encapsulate assignment of socket origin/acceptor credentials 2021-08-29 01:33:15 +02:00
Andreas Kling
242063866f Kernel: Rename LocalSocket factory to try_create() & tighten return type 
Also tighten the return type to KResultOr<NonnullRefPtr<LocalSocket>>
since it cannot return any other socket type.
 2021-08-29 01:25:03 +02:00
Andreas Kling
ae197deb6b Kernel: Strongly typed user & group ID's 
Prior to this change, both uid_t and gid_t were typedef'ed to `u32`.
This made it easy to use them interchangeably. Let's not allow that.

This patch adds UserID and GroupID using the AK::DistinctNumeric
mechanism we've already been employing for pid_t/ProcessID.
 2021-08-29 01:09:19 +02:00
Andreas Kling
59335bd8ea Kernel: Rename FileDescription::create() => try_create() 2021-08-29 01:09:19 +02:00
Peter Elliott
38e0d1b456 Kernel: Return ENOTSUP instead of panicking on invalid sockopt 
X11 handles this gracefully, and it makes more sense than panicking.
 2021-08-22 10:29:06 +02:00
Peter Elliott
39a77559f1 Kernel+LibC: Implement FIONREAD ioctl 
FIONREAD gets the number of bytes availible to read from a file
descriptor without blocking. I only implemented it for regular files and
sockets
 2021-08-22 10:29:06 +02:00
Andreas Kling
c2fc33becd Kernel: Rename ProtectedValue<T> => MutexProtected<T> 
Let's make it obvious what we're protecting it with.
 2021-08-22 03:34:09 +02:00
Idan Horowitz
cf271183b4 Kernel: Make Process::current() return a Process& instead of Process* 
This has several benefits:
1) We no longer just blindly derefence a null pointer in various places
2) We will get nicer runtime error messages if the current process does
turn out to be null in the call location
3) GCC no longer complains about possible nullptr dereferences when
compiling without KUBSAN
 2021-08-19 23:49:53 +02:00
Andreas Kling
7676edfb9b Kernel: Stop allowing implicit conversion from KResult to int 
This patch removes KResult::operator int() and deals with the fallout.
This forces a lot of code to be more explicit in its handling of errors,
greatly improving readability.
 2021-08-14 15:19:00 +02:00
brapru
342e1f0a84 Kernel: Properly implement SO_ERROR option 
This fixes the placeholder stub for the SO_ERROR via getsockopt. It
leverages the m_so_error value that each socket maintains. The SO_ERROR
option obtains and then clears this field, which is useful when checking
for errors that occur between socket calls. This uses an integer value
to return the SO_ERROR status.

Resolves #146
 2021-08-10 20:59:53 +02:00
brapru
0095c7cb7d Kernel: Add so_error to keep track of the socket's error state 
This sets the m_so_error variable every time the socket returns an
error.
 2021-08-10 20:59:53 +02:00
Andreas Kling
c94c15d45c Everywhere: Replace AK::Singleton => Singleton 2021-08-08 00:03:45 +02:00
Jean-Baptiste Boric
edd6c04024 Kernel: Migrate local socket table locking to ProtectedValue 2021-08-07 11:48:00 +02:00
Jean-Baptiste Boric
aea98a85d1 Kernel: Move Lockable into its own header 2021-08-07 11:48:00 +02:00
Brian Gianforcaro
109c885585 Kernel: Handle OOM from DoubleBuffer usage in Net/LocalSocket 
LocalSockets keep a DoubleBuffer for both client and server usage.
This change converts the usage from using the default constructor
which is unable to observe OOM, to the new try_create factory and
plumb the result through the constructor.
 2021-08-03 18:54:23 +02:00
Andreas Kling
9457d83986 Kernel: Rename Locker => MutexLocker 2021-07-18 01:53:04 +02:00
Andreas Kling
cee9528168 Kernel: Rename Lock to Mutex 
Let's be explicit about what kind of lock this is meant to be.
 2021-07-17 21:10:32 +02:00
Andreas Kling
0d39bd04d3 Kernel: Rename VFS => VirtualFileSystem 2021-07-11 00:25:24 +02:00
Daniel Bertalan
f820917a76 Everywhere: Use nothrow new with adopt_{ref,own}_if_nonnull 
This commit converts naked `new`s to `AK::try_make` and `AK::try_create`
wherever possible. If the called constructor is private, this can not be
done, so we instead now use the standard-defined and compiler-agnostic
`new (nothrow)`.
 2021-06-24 17:35:49 +04:30
Gunnar Beutner
ca3cae81eb Kernel: Use KResultOr<size_t> for the DoubleBuffer class 2021-06-16 21:29:36 +02:00
Brian Gianforcaro
e0da61f9d6 Kernel: Switch LocalSocket to IntrusiveList from InlineLinkedList 2021-05-26 20:24:32 +02:00
Brian Gianforcaro
9375f3dc09 Kernel: Make LocalSocket factory APIs OOM safe 2021-05-13 16:21:53 +02:00
Brian Gianforcaro
e8d6d478c4 Kernel: Harden LocalSocket Vector usage against OOM. 2021-05-01 09:10:30 +02:00
Gunnar Beutner
aa792062cb Kernel+LibC: Implement the socketpair() syscall 2021-04-28 14:19:45 +02:00
Brian Gianforcaro
8d6e9fad40 Kernel: Remove the now defunct LOCKER(..) macro. 2021-04-25 09:38:27 +02:00
Andreas Kling
b91c49364d AK: Rename adopt() to adopt_ref() 
This makes it more symmetrical with adopt_own() (which is used to
create a NonnullOwnPtr from the result of a naked new.)
 2021-04-23 16:46:57 +02:00
Brian Gianforcaro
1682f0b760 Everything: Move to SPDX license identifiers in all files. 
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
 2021-04-22 11:22:27 +02:00
Brian Gianforcaro
5f6ab77352 Kernel: Add bitwise operators for Thread::FileBlocker::BlockFlags enum 
Switch to using type-safe bitwise operators for the BlockFlags class,
this cleans up a lot of boilerplate casts which are necessary when the
enum is declared as `enum class`.
 2021-03-08 18:47:40 +01:00
Ben Wiederhake
5c15ca7b84 Kernel: Make sockets use AK::Time 2021-03-02 08:36:08 +01:00
Andreas Kling
5d180d1f99 Everywhere: Rename ASSERT => VERIFY 
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)

Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.

We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
 2021-02-23 20:56:54 +01:00
AnotherTest
1e79c04616 Kernel+LibC: Stub out SO_{SND_RCV}BUF 2021-02-15 17:32:56 +01:00
Andreas Kling
1f277f0bd9 Kernel: Convert all *Builder::appendf() => appendff() 2021-02-09 19:18:13 +01:00
AnotherTest
09a43969ba Everywhere: Replace dbgln<flag>(...) with dbgln_if(flag, ...) 
Replacement made by `find Kernel Userland -name '*.h' -o -name '*.cpp' | sed -i -Ee 's/dbgln\b<(\w+)>\(/dbgln_if(\1, /g'`
 2021-02-08 18:08:55 +01:00
Andreas Kling
a8c823f242 Kernel: Bump the number of fd's that can be queued on a local socket 2021-01-29 22:11:59 +01:00
asynts
7cf0c7cc0d Meta: Split debug defines into multiple headers. 
The following script was used to make these changes:

    #!/bin/bash
    set -e

    tmp=$(mktemp -d)

    echo "tmp=$tmp"

    find Kernel \( -name '*.cpp' -o -name '*.h' \) | sort > $tmp/Kernel.files
    find . \( -path ./Toolchain -prune -o -path ./Build -prune -o -path ./Kernel -prune \) -o \( -name '*.cpp' -o -name '*.h' \) -print | sort > $tmp/EverythingExceptKernel.files

    cat $tmp/Kernel.files | xargs grep -Eho '[A-Z0-9_]+_DEBUG' | sort | uniq > $tmp/Kernel.macros
    cat $tmp/EverythingExceptKernel.files | xargs grep -Eho '[A-Z0-9_]+_DEBUG' | sort | uniq > $tmp/EverythingExceptKernel.macros

    comm -23 $tmp/Kernel.macros $tmp/EverythingExceptKernel.macros > $tmp/Kernel.unique
    comm -1 $tmp/Kernel.macros $tmp/EverythingExceptKernel.macros > $tmp/EverythingExceptKernel.unique

    cat $tmp/Kernel.unique | awk '{ print "#cmakedefine01 "$1 }' > $tmp/Kernel.header
    cat $tmp/EverythingExceptKernel.unique | awk '{ print "#cmakedefine01 "$1 }' > $tmp/EverythingExceptKernel.header

    for macro in $(cat $tmp/Kernel.unique)
    do
        cat $tmp/Kernel.files | xargs grep -l $macro >> $tmp/Kernel.new-includes ||:
    done
    cat $tmp/Kernel.new-includes | sort > $tmp/Kernel.new-includes.sorted

    for macro in $(cat $tmp/EverythingExceptKernel.unique)
    do
        cat $tmp/Kernel.files | xargs grep -l $macro >> $tmp/Kernel.old-includes ||:
    done
    cat $tmp/Kernel.old-includes | sort > $tmp/Kernel.old-includes.sorted

    comm -23 $tmp/Kernel.new-includes.sorted $tmp/Kernel.old-includes.sorted > $tmp/Kernel.includes.new
    comm -13 $tmp/Kernel.new-includes.sorted $tmp/Kernel.old-includes.sorted > $tmp/Kernel.includes.old
    comm -12 $tmp/Kernel.new-includes.sorted $tmp/Kernel.old-includes.sorted > $tmp/Kernel.includes.mixed

    for file in $(cat $tmp/Kernel.includes.new)
    do
        sed -i -E 's/#include <AK\/Debug\.h>/#include <Kernel\/Debug\.h>/' $file
    done

    for file in $(cat $tmp/Kernel.includes.mixed)
    do
        echo "mixed include in $file, requires manual editing."
    done
 2021-01-26 21:20:00 +01:00
asynts
8465683dcf Everywhere: Debug macros instead of constexpr. 
This was done with the following script:

    find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/dbgln<debug_([a-z_]+)>/dbgln<\U\1_DEBUG>/' {} \;

    find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/if constexpr \(debug_([a-z0-9_]+)/if constexpr \(\U\1_DEBUG/' {} \;
 2021-01-25 09:47:36 +01:00
asynts
acdcf59a33 Everywhere: Remove unnecessary debug comments. 
It would be tempting to uncomment these statements, but that won't work
with the new changes.

This was done with the following commands:

    find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec awk -i inplace '$0 !~ /\/\/#define/ { if (!toggle) { print; } else { toggle = !toggle } } ; $0 ~/\/\/#define/ { toggle = 1 }' {} \;

    find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec awk -i inplace '$0 !~ /\/\/ #define/ { if (!toggle) { print; } else { toggle = !toggle } } ; $0 ~/\/\/ #define/ { toggle = 1 }' {} \;
 2021-01-25 09:47:36 +01:00