Doug Rabson d373650a53 Add support for mounting single files in nullfs ... The main use-case for this is to support mounting config files and secrets into OCI containers. My current workaround copies the files into the container which is messy and risks secrets leaking into container images if the cleanup fails. This adds a VFCF flag to indicate whether the filesystem supports file mounts and allows fspath to be either a directory or a file if the flag is set. Test Plan: $ sudo mkdir -p /mnt $ sudo touch /mnt/foo $ sudo mount -t nullfs /COPYRIGHT /mnt/foo Reviewed by: mjg, kib Tested by: pho (cherry picked from commit 521fbb722c)		2023-01-06 07:57:57 +00:00
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null.h	Save lower root vnode in nullfs mnt data instead of upper.	2020-01-28 11:29:06 +00:00
null_subr.c	vfs: add v_irflag accessors	2021-01-03 06:50:06 +00:00
null_vfsops.c	Add support for mounting single files in nullfs	2023-01-06 07:57:57 +00:00
null_vnops.c	nullfs(5): Fix a typo in a source code comment	2022-08-10 14:23:45 +02:00