mirror of
https://github.com/torvalds/linux.git
synced 2026-09-14 16:10:02 +02:00
ed4b167252
Add a umh field to struct kernel_clone_args. When set, copy_fs() copies from pid 1's fs_struct instead of the kthread's fs_struct. This ensures usermodehelper threads always get init's filesystem state regardless of their parent's (kthreadd's) fs. Usermodehelper threads are not allowed to create mount namespaces (CLONE_NEWNS), share filesystem state (CLONE_FS), or be started from a non-initial mount namespace. No usermodehelper currently does this so we don't need to worry about this restriction. Set .umh = 1 in user_mode_thread(). At this stage pid 1's fs points to rootfs which is the same as kthreadd's fs, so this is functionally equivalent. Link: https://patch.msgid.link/20260601-work-kthread-nullfs-v4-20-77ee053060e0@kernel.org Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org> |
||
|---|---|---|
| .. | ||
| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| cxl | ||
| drm | ||
| dt-bindings | ||
| hyperv | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rv | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| ufs | ||
| vdso | ||
| video | ||
| xen | ||
| Kbuild | ||