Currently the only way to pre populate an XFS partition is via the prototype file. While it works it has some limitations like: - not allowed spaces in file names - not preserving timestamps of original inodes This series adds a new -P option to mkfs.xfs that allows users to populate a newly created filesystem directly from an existing directory. While similar to the prototype functionality, this doesn't require writing a prototype file. The implementation preserves file and directory attributes (ownership, permissions, timestamps) from the source directory when copying content to the new filesystem. [v1] -> [v2] remove changes to protofile spec ensure backward compatibility [v2] -> [v3] use inode_set_[acm]time() as suggested avoid copying atime and ctime they are often problematic for reproducibility, and mtime is the important information to preserve anyway [v3] -> [v4] rewrite functionality to populate directly from an input directory this is similar to mkfs.ext4 option. [v4] -> [v5] reorder patch to make it easier to review reflow to keep code below 80 chars use _() macro in prints add SPDX headers to new files fix comment styling move from typedef to structs move direntry handling to own function [v5] -> [v6] rebase on 6.14 [v6] -> [v7] move functionality to common -p flag add noatime flag to skip atime copy and set to current time set ctime/crtime to current time preserve hardlinks preserve extended attributes for all file/dir types add fsxattr to copied files/dirs Luca Di Maio (2): proto: add ability to populate a filesystem from a directory mkfs: modify -p flag to populate a filesystem from a directory man/man8/mkfs.xfs.8.in | 41 ++- mkfs/proto.c | 643 ++++++++++++++++++++++++++++++++++++++++- mkfs/proto.h | 2 +- mkfs/xfs_mkfs.c | 19 +- 4 files changed, 682 insertions(+), 23 deletions(-) -- 2.49.0
