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Kernel: Add Credentials to hold a set of user and group IDs

This patch adds a new object to hold a Process's user credentials:

- UID, EUID, SUID
- GID, EGID, SGID, extra GIDs

Credentials are immutable and child processes initially inherit the
Credentials object from their parent.

Whenever a process changes one or more of its user/group IDs, a new
Credentials object is constructed.

Any code that wants to inspect and act on a set of credentials can now
do so without worrying about data races.
This commit is contained in:
Andreas Kling 2022-08-20 18:25:54 +02:00
parent bec314611d
commit 122d7d9533
11 changed files with 366 additions and 128 deletions

View file

@ -43,6 +43,7 @@ set(KERNEL_SOURCES
CMOS.cpp
CommandLine.cpp
Coredump.cpp
Credentials.cpp
Devices/AsyncDeviceRequest.cpp
Devices/Audio/AC97.cpp
Devices/Audio/Channel.cpp