Install a UNIX-style setuid-root sudo app: the kernel raises euid on
exec, userspace verifies the caller with passwd_verify(), then
setresuid/setgroups and execvp() run the command. Ostest covers
setuid exec after a hard credential drop.
Signed-off-by: Abhishek Mishra <mishra.abhishek2808@gmail.com>
Install a minimal passwd file at CONFIG_LIBC_PASSWD_FILEPATH before
getpwnam() checks so sim:ostest does not require a pre-built /etc/passwd.
Signed-off-by: Abhishek Mishra <mishra.abhishek2808@gmail.com>
Add getresuid/setreuid coverage plus ownership and permission checks
for message queues, named semaphores, shared memory, and FIFOs.
Signed-off-by: Abhishek Mishra <mishra.abhishek2808@gmail.com>
