fstool 0.0.5

Build disk images and filesystems (ext2/3/4, MBR, GPT) from a directory tree and TOML spec, in the spirit of genext2fs.
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# Example fstool spec: a bare ext4 filesystem image (no partition table).
#
#   fstool build examples/bare-ext4.toml -o /tmp/rootfs.img
#   e2fsck -fn /tmp/rootfs.img
#   fstool ls /tmp/rootfs.img
#
# A bare-FS spec has exactly one top-level [filesystem] table. The whole
# image is that one filesystem. This is the genext2fs-replacement mode.

[filesystem]
# Filesystem flavour: "ext2", "ext3", or "ext4".
type = "ext4"

# Host directory whose contents become the image's tree. Optional —
# omit it for an empty filesystem (just / and /lost+found).
source = "./rootfs"

# Block size in bytes: 1024, 2048, or 4096. Default 1024.
block_size = 4096

# Journal size in blocks (ext3/ext4 only). Default 1024 (the JBD2 minimum).
journal_blocks = 1024

# Pre-populate /dev: "none", "minimal", or "standard".
# minimal  = console null zero ptmx tty fuse random urandom
# standard = minimal + tty0..15 ttyS0..3 kmsg mem port hd* sd*
rootdevs = "standard"

# Volume label (≤ 16 bytes) and inode timestamps. mtime defaults to 0
# for reproducible output.
volume_label = "rootfs"
mtime = 0