App is no longer just a simple [exec.Cmd] wrapper, so exposing these steps separately no longer makes sense and actually hinders proper error handling, cleanup and cancellation. This change removes the five-second wait when the shim dies before receiving the payload, and provides caller the ability to gracefully stop execution of the confined process.
Signed-off-by: Ophestra <cat@gensokyo.uk>
The primary use case for extra perms is app-specific state directories, which may or may not exist (first run of any app).
Signed-off-by: Ophestra <cat@gensokyo.uk>
Fortify state store instances was specific to aids due to outdated design decisions carried over from the ego rewrite. That no longer makes sense in the current application, so the interface now enables a single store object to manage all transient state.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
The socket-based approach is no longer necessary as fsu allows extra files and sudo compatibility is no longer relevant.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This value is used for passwd generation. Bad input can cause very confusing issues. This is not a security issue, however validation will improve user experience.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This removes the dependency on external user switchers like sudo/machinectl and decouples fortify user ids from the passwd database.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
Also moved /dev/fortify to /fortify since it is impossible to create new directories in /dev from the init namespace and bind mounting its contents has undesirable side effects.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
Chromium's D-Bus client implementation refuses to work when its getuid call returns a different value than what the D-Bus server is running as. The reason behind this is not fully understood, but this workaround is implemented to support chromium and electron apps. This is not used by default since it has many side effects that break many other programs, like SSH on NixOS.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
Pointing xdg-dbus-proxy to stdout/stderr makes a huge mess. This change enables app to neatly print out prefixed xdg-dbus-proxy messages after output is resumed.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This implements lazy loading of the systemd marker (they are not accessed in init and shim) and ensures consistent behaviour when running with a stub.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This change moves all user switcher and shim management to the shim package and withholds output while shim is alive. This also eliminated all exit scenarios where revert is skipped.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This test seals App against a deterministic os stub and checks the resulting sys and bwrap values against known correct ones. The effects of sys and bwrap on the OS and sandbox is deterministic and tested in their own respective packages.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
Fortify overrides /etc/passwd and /etc/group in the sandbox. Bind mounting /etc results in them being replaced when the passwd database is updated on host.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This is already supported by the underlying bwrap helper. This change exposes access to it in Config.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
This prevents a hang when setup faults but the shim keeps waiting on the socket. Setup is automatically aborted when the shim is killed.
Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
