buildroot-novena/fs, branch 2013.05

fs/ext2: further fix to the UUID

2013-05-28T22:18:37Z

Turned out that setting a nil-UUID is no better than clearing it. What currently happens is as follows: - first, genext2fs does not generate a UUID - then we tune2fs to upgrade the filesystem - then we run fsck, which generates a random UUID - then we re-run tune2fs to set a nil-UUID So, on the target, if the file system is improperly unmounted (eg. with a power failure), on next boot, fsck may be run, and a new random UUID will be generated. *However*, fsck improperly updates the filesystem when it adds the UUID, and there are a few group descriptor checksum errors. Those errors will go undetected until the next fsck, which will then block for user input (bad on embedded systems, bad). Fix that by systematically generating a random UUID _before_ we call to fsck. A random UUID is not so bad, after all, since there are already so many sources of unpredictability in the filesystem: files date and ordering, files content (date, paths...) which renders a fixed UUID unneeded. And it is still possible to set the UUID in a post-image script if needed, anyway. Signed-off-by: "Yann E. MORIN" Cc: Peter Korsgaard Cc: Thomas Petazzoni Signed-off-by: Peter Korsgaard

fs/ext2: explicitly set a NULL UUID

2013-05-28T10:38:30Z

"tune2fs -U clear" creates an invalid filesystem, that fsck.ext2 whines about later: $ make rootfs-ext2 [--SNIP--] $ ./host/usr/sbin/fsck.ext4 images/rootfs.ext2 e2fsck 1.42.7 (21-Jan-2013) Filesystem did not have a UUID; generating one. images/rootfs.ext2: clean, 4616/5120 files, 53171/131072 blocks $ ./host/usr/sbin/fsck.ext4 -f images/rootfs.ext2 e2fsck 1.42.7 (21-Jan-2013) One or more block group descriptor checksums are invalid. Fix? yes Group descriptor 0 checksum is 0x4131, should be 0x8bdb. FIXED. [--SNIP--] So we set an explicitly NULL UUID instead. Signed-off-by: "Yann E. MORIN" Signed-off-by: Peter Korsgaard

packages: add ability for packages to create users

2013-04-25T20:56:42Z

Packages that install daemons may need those daemons to run as a non-root, or an otherwise non-system (eg. 'daemon'), user. Add infrastructure for packages to create users, by declaring the FOO_USERS variable that contain a makedev-syntax-like description of the user(s) to add. Signed-off-by: "Yann E. MORIN" Cc: Samuel Martin Cc: Cam Hutchison Cc: Thomas Petazzoni Acked-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Peter Korsgaard

fs/ubifs: factorize all the "depends on" into "if...endif" blocks

2013-04-25T20:45:46Z

Factorize all the "depends on" into "if...endif" blocks All the UBIFS options use "depends on BR2_TARGET_ROOTFS_UBIFS" but we can simplify the config file by enclosing them in an "if..endif" block. Signed-off-by: Mark Jackson Acked-by: "Yann E. MORIN" Signed-off-by: Peter Korsgaard

fs/ubifs: allow extra options to be passed to ubifs creation tools

2013-04-25T20:43:13Z

Allow extra options to be passed to ubifs creation tools. Signed-off-by: Mark Jackson Acked-by: Thomas Petazzoni Signed-off-by: Peter Korsgaard

fs/common: add support for LZO and XZ compression methods

2013-04-24T20:18:13Z

Add support for LZO and XZ compression methods to cpio, ext2, tar and ubifs filesystem targets. Signed-off-by: Gustavo Zacarias Signed-off-by: Peter Korsgaard

fs/ext2: bump journal overhead to 1300 blocks

2013-04-12T12:57:36Z

A quick test with a ~3.5MB ext4 filesystem shows that 1081 blocks isn't enough: tune2fs 1.42.7 (21-Jan-2013) Please run e2fsck on the filesystem. Creating journal inode: Journal size too big for filesystem. So bump it a bit. Overestimating the journal size is probably not really a big deal for the kind of systems using ext3/4 anyway. Signed-off-by: Peter Korsgaard

fs/ext2: remove count- and time-based fsck

2013-04-12T12:45:47Z

Set the count- and time-based checks intervals to 0, thus effectively disabling automatic checks at boot (after a suggestion by Arnout). Signed-off-by: "Yann E. MORIN" Cc: Arnout Vandecappelle Cc: Thomas Petazzoni Acked-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Peter Korsgaard

fs/ext2: add support for ext2 rev0 and rev1

2013-04-12T12:43:22Z

Some bootloaders have a buggy ext2 support, and require ext2 rev1 instead of the traditional ext2 rev0 that genext2fs produces. tune2fs accepts only one '-O list' at a time, so we need to construct a list of -O options. Signed-off-by: "Yann E. MORIN" Cc: Arnout Vandecappelle Acked-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Peter Korsgaard

fs/ext2: add a symlink 'rootfs.ext#' -> 'rootfs.ext2'

2013-04-12T12:42:31Z

Signed-off-by: "Yann E. MORIN" Cc: Arnout Vandecappelle Signed-off-by: Peter Korsgaard