The enumeration code is already enumerating all buses, recursively
enumerating bridges (which are buses) makes devices on bridges being
enumerated multiple times. Also, the PCI code was incorrectly mixing up
terminology; let's settle down on bus, device and function because ever
since PCIe came along "slots" isn't really a thing anymore.
During "Emulator hacking: Let's make the userspace emulator go faster!",
the switch implented in read() was inlined (toward the end of the video).
This patch restore the assert check for any read other than 8, 16 or 32
bits was lost during the code conversion.
ctype's `iscntrl` truncates its input, making some codepoints appear as
control characters. Avoid this by checking whether the character is in
ascii to begin with.
Just wrapping to_string() in urlencode() will break the link as too many
characters are encoded. Also wrap in escape_html_entities() as well -
most relevant chars are already URL-encoded, but this will change '&' to
'&', for example.
Just ignore all these environment flags if the AT_SECURE flag is set in
the program's auxiliary vector.
This prevents a user from tricking set-uid programs into dumping debug
information via environment flags.
load_from_image() becomes map() and link(). This allows us to map
an object before mapping its dependencies.
This solves an issue where fixed-position executables (like GCC)
would clash with the ASLR placement of their own shared libraries.
Validation was happening in two steps, some in the constructor, and then
some later on, in load_from_image().
This made no sense so just move all the validation to the constructor.
Refactor DynamicLoader construction with a try_create() helper so that
we can call mmap() before making a loader. This way the loader doesn't
need to have an "mmap failed" state.
This patch also takes care of determining the ELF file size in
try_create() instead of expecting callers to provide it.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
Note:
- `append` is not being changed because there are several overloads
for appending single values and concatenating vectors. This
conflation needs to be addressed first.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
Problem:
- Using regular functions rather than function templates results in
the arguments not being deduced. This then requires the same
function to be written multiple times and for `move` to be used
rather than `forward`.
Solution:
- Collapse multiple function overloads to a single function template
with a deduced argument. This allows the argument to be a forwarding
reference and bind to either an l-value or r-value and forward the
value.
We had an exception that allowed SOL_SOCKET + SO_PEERCRED on local
socket to support LibIPC's PID exchange mechanism. This is no longer
needed so let's just remove the exception.
The PIDs were used for sharing shbufs between processes, but now that
we have migrated to file descriptor passing, we no longer need to know
the PID of the other side.
This patch adds an IPC call for debugging requests. It's stringly typed
and very simple, and allows us to easily implement all the features in
the Browser's Debug menu.
It's useful for programs to change their thread names to say something
interesting about what they are working on. Let's not require "thread"
for this since single-threaded programs may want to do it without
pledging "thread".
Frick it, let's just enable this by default and give ourselves a reason
to improve things! Some things are broken, and there's a bit of flicker
when resizing, but we can do this.
This drastically improves our web browsing security model by isolating
each tab into its own WebContent process that runs as an unprivileged
user with a tight pledge+unveil sandbox.
To get a single-process browser, you can start it with -s.
This is a workaround until we can implement a proper <input type=text>
in terms of LibWeb primitives.
This makes google.com not crash in multi-process mode (but there is no
search box.)
The OOPWV will now detect WebContent process crashes/disconnections and
simply create a new WebContent process in its place. We also generate a
little error page with a link to the crashing URL so you can reload and
try again.
This a huge step forward for OOPWV since it now has a feature that IPWV
can never replicate. :^)
If a window is being torn down during app shutdown, the global
application pointer may be nulled out already. So let's handle that
case gracefully in Window::hide().
Image boxes want to know whether they are inside the visible viewport.
This is used to pause/resume animations, and to update the purgeable
memory volatility state.
Previously we would traverse the entire layout tree on every resize,
calling a helper on each ImageBox. Make those boxes register with the
frame they are interested in instead, saving us all that traversal.
This also makes it easier for other parts of the code to learn about
viewport changes in the future. :^)
