A Python library for reading and writing cpio archives.
Project description
PyCPIO
A library for creating CPIO files in Python.
Currently, the library only supports the New ASCII format, and xz compression
This library is primary designed for use in ugrd to create CPIO archives for use in initramfs.
Usage
-h, --help show this help message and exit
-d, --debug enable debug mode (level 10)
-dd, --trace enable trace debug mode (level 5)
-v, --version print the version and exit
--log-file LOG_FILE set the path to the log file
--log-level LOG_LEVEL
set the log level
--log-time enable log timestamps
--no-log-color disable log color
-i INPUT, --input INPUT
input file
-a APPEND, --append APPEND
append to archive
--recursive RECURSIVE
append to archive recursively
--relative RELATIVE append to archive relative to this path
--absolute allow absolute paths
--reproducible Set mtime to 0, start inodes at 0
--rm RM, --delete RM delete from archive
-n NAME, --name NAME Name/path override for append
-s SYMLINK, --symlink SYMLINK
create symlink
-c CHARDEV, --chardev CHARDEV
create character device
--major MAJOR major number for character/block device
--minor MINOR minor number for character/block device
-u UID, --set-owner UID
set UID on all files
-g GID, --set-group GID
set GID on all files
-m MODE, --set-mode MODE
set mode on all files
-z COMPRESS, --compress COMPRESS
compression type
-o OUTPUT, --output OUTPUT
output file
-l, --list list CPIO contents
-p, --print print CPIO contents
Structure
pycpio.header.cpioheader
: The class which represents a CPIO header- Can be initialized from args for header fields, or bytes representing a header
- header types are defined in
pycpio.header.headers
(only the new ascii format is supported)
pycpio.cpio.data
: The class which represents a CPIO data block- Each CPIO object must have a header.
- Currently the follwing subtypes are supported:
file
: A regular file, or hardlink.dir
: A directorysymlink
: A symbolic linkchardev
: A character device
- CPIO objects are collected in a
pycpio.cpio.archive
object- The archive handles duplication, inode generation, name normalization, and other collection related tasks
- All CPIO object types can be initialized from args, bytes, or a file path
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