files, init: filetrans /run/machine-id etc_runtime_t #874
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type=PROCTITLE proctitle=/usr/lib/systemd/systemd-logind
type=SYSCALL arch=armeb syscall=openat per=PER_LINUX success=yes exit=21
a0=AT_FDCWD a1=0xb6eb6c2c a2=O_RDONLY|O_NOCTTY|O_NOFOLLOW|O_CLOEXEC
a3=0x0 items=0 ppid=1 pid=435 auid=unset uid=root gid=root euid=root
suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset
comm=systemd-logind exe=/usr/lib/systemd/systemd-logind
subj=system_u:system_r:systemd_logind_t:s0 key=(null)
type=AVC avc: denied { open } for pid=435 comm=systemd-logind
path=/etc/machine-id dev="tmpfs" ino=13
scontext=system_u:system_r:systemd_logind_t:s0
tcontext=system_u:object_r:init_runtime_t:s0 tclass=file
type=AVC avc: denied { read } for pid=435 comm=systemd-logind
name=machine-id dev="tmpfs" ino=13
scontext=system_u:system_r:systemd_logind_t:s0
tcontext=system_u:object_r:init_runtime_t:s0 tclass=file
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https://www.spinics.net/lists/systemd-devel/msg09631.html
Reproduction and suggestion to use dedicated type (TODO)
--
Fedora:
$ matchpathcon /run/machine-id
/run/machine-id system_u:object_r:machineid_t:s0
https://github.com/fedora-selinux/selinux-policy/blob/v41.33/policy/modules/system/init.fc#L67
$ sesearch --type_transition --class file --source init_t
--target var_run_t | grep machine
type_transition init_t var_run_t:file machineid_t machine-id;
https://github.com/fedora-selinux/selinux-policy/blob/v41.33/policy/modules/system/init.te#L241
Signed-off-by: Clayton Casciato <ccasciato@21sw.us>
pebenito
approved these changes
Mar 17, 2025
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--
systemd-devel
Reproduction and suggestion to use dedicated type (TODO)
--
Fedora:
init.fc
init.te