* make hints persistent and do not call blkid_probe_reset_hints() in
blkid_probe_set_device()
* export blkid_probe_reset_hints() by API to keep it completely in
user's hands
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Add new API for additional probing hints (offsets). The idea is that
probing function can optionally use the hint to detect superblock or
partition table if on unusual place where the library does not expects (etc.)
The hints use strings as identifiers (e.g. "last-medium-session") to
make it extendable and prober specific (if necessary). The function
blkid_probe_set_hint() always add a new hint, so you can specify more
offsets with the same (hint) name.
The function blkid_probe_get_hint() is not public. For now it returns
the first hint only.
Addresses: https://github.com/karelzak/util-linux/issues/1161
Signed-off-by: Karel Zak <kzak@redhat.com>
The libblkid probing functions returns the first successful result of
the filesystem/RAID/PT. Unfortunately, some signatures is possible to
detect by more ways or device may contains more copies (e.g. GPT).
This is no problem when we wipe signatures from the device. In this
case we zeroize on-device signature and re-scan for the signature (by
blkid_probe_step_back()).
The problem is if we want to read all permutations without the device
modification (for example wipefs(8) dry run).
This patch add blkid_probe_hide_range(). The function remove (zeroize)
specified signature from in-memory cached buffers. If the buffer is
later re-used by probing functions then the signature is invisible and
we can try detect another variant of the magic string.
Signed-off-by: Karel Zak <kzak@redhat.com>
* 'master' of https://github.com/pali/util-linux:
tests: Add UDF CD-ROM hybrid image (ISO+Joliet+UDF) created by Nero 6
tests: Fix test output for low-probe-udf to contain UDF data
Revert "libblkid: Probe UDF volumes for ISO9660 info as well"
This reverts commit 8053b51c76.
Reporting meaningless ID_FS_LABEL=UDF_Volume written in that commit was
caused by reading wrong value for UDF label and it was fixed in commit
2f2730bc77.
So after this revert blkid reports for UDF filesystems label of UDF
filesystem and not label of ISO (if present) like other systems. In most
cases UDF and ISO labels are same (sometimes just one is upper case).
Commit 8053b51c76 just fixed result, not
reason why blkid reported different UDF Label as Windows. Real reason was
fixed in 2f2730bc77.
This new function can be use to enquiry what partition names libblkid is
aware of. First use of this information will be in partx(8) to make bash
completion to work without a magic list.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The usual way is to use ioctl to ask block device for sector size, but
this is useless for disk images (regular files). And the default
(512-bytes) may be pretty wrong for disk images from 4K disks. Let's
support a way how to specify proper sector size.
Signed-off-by: Karel Zak <kzak@redhat.com>
It seems that gtk-docs stuff is confused when we use version.xml
(package version) and xml/version.xml (library version functions).
Signed-off-by: Karel Zak <kzak@redhat.com>
* don't teach people C by header files, so use warn_unused_result
attribute only on places where we return allocated memory (to avoid
leaks in applications).
Signed-off-by: Karel Zak <kzak@redhat.com>
Karel Zak
Ruediger Meier
Pali Rohár
Sami Kerola
Sébastien Helleu
Sebastian Rasmussen