On Wed, Jan 30, 2019 at 12:24:29AM +0100, Lukasz Majewski wrote: > On Tue, 29 Jan 2019 14:40:08 +0100 > Jean-Jacques Hiblot <[email protected]> wrote: > > > This series adds support for the creation of symbolic links on ext4 > > file-systems. > > The motivation behind this work is to have the ability to "do" the job > > of update-alternatives in u-boot. > > Firmware on TI's platform are usually managed with > > update-alternatives and are thus targeted by a symbolic link. In some > > situations we need the ability to select an alternate firmware before > > the linux kernel is started so that when a early driver needing the > > firmware comes up, it can be fed the firmware of our choice. > > > > Tested on a am57xx_evm, using a EXT4 partition on external SDcard. > > The filesystem can be checked later with: fsck.ext4 -f <dev> > > > > usage example: > > => ln mmc 0:2 zImage /boot/the_linux_kernel > > Could you also add a test for symlink to sandbox? This is a high level > code (FS ext4), so it can be nice tested there. > > > > > > > Jean-Jacques Hiblot (3): > > fs: ext4: constify the buffer passed to write functions > > fs: ext4: Add support for the creation of symbolic links > > fs: Add a new command to create symbolic links > > > > cmd/fs.c | 14 ++++++++++++ > > fs/ext4/ext4_common.c | 6 ++--- > > fs/ext4/ext4_common.h | 2 +- > > fs/ext4/ext4_write.c | 51 > > ++++++++++++++++++++++++++++++++----------- fs/fs.c | > > 44 +++++++++++++++++++++++++++++++++++++ include/ext4fs.h | 5 > > +++-- include/fs.h | 2 ++ > > 7 files changed, 105 insertions(+), 19 deletions(-)
Yes, now that we have tests under pytest, we need to drop something for this under test/py/tests/test_fs/ and my first thought is in a new test_symlink.py file so that someday when we get more than just FAT/EXTn tests the next FS that supports symlinks gets the tests for free if/when it supports symlinks. -- Tom
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