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Userland: Add unveil/pledge requisites for dynamic Unicode data loading

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Loading libunicodedata.so will require dlopen(), which in turn requires
mmap(). The 'prot_exec' pledge is needed for this.

Further, the .so itself must be unveiled for reading. The "real" path is
unveiled (libunicodedata.so.serenity) as the symlink (libunicodedata.so)
itself cannot be unveiled.
This commit is contained in:
Timothy Flynn 2021-12-16 08:13:00 -05:00 • committed by Brian Gianforcaro
parent 35e5cbe3b3
commit 10a8b6d411
7 changed files with 16 additions and 8 deletions
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3
Userland/Applications/TextEditor/main.cpp
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@ -18,7 +18,7 @@ using namespace TextEditor;
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio recvfd sendfd thread rpath cpath wpath unix"));
TRY(Core::System::pledge("stdio recvfd sendfd thread rpath cpath wpath unix prot_exec"));
auto app = TRY(GUI::Application::try_create(arguments));
@ -35,6 +35,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
TRY(Core::System::unveil("/tmp/portal/launch", "rw"));
TRY(Core::System::unveil("/tmp/portal/webcontent", "rw"));
TRY(Core::System::unveil("/tmp/portal/filesystemaccess", "rw"));
TRY(Core::System::unveil("/usr/lib/libunicodedata.so.serenity", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
StringView preview_mode_view = preview_mode;