Fix is_device_mapper() predicate to not base on checking a hardcoded
major number (253), which not always correct, since on some systems
dm-devices have different majors".
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Use the directory specified by the shell environment variable TMPDIR
for temporary objects creation and ngdump job simulation. If TMPDIR is
not set, then use "/tmp" for the mentioned purposes;
While running ngdump job in 'dry-run' mode:
. Don't format/mount the target dump device. Instead, create the
bootmap file and the meta-file at the temporary mount point without
mounting anything to it. Thus, the mentioned files to be acrually
created in the "proxy" file system owning the temporary mount point;
. Retrieve base disk info from the read-only dump device and
complete that info with the block size of the proxy file system;
Separate the steps on retrieving/setting file system block size
into a dedicated procedure;
Use definitions instead of hardcoded file names;
Fix a bug in an error path (accessing freed memory);
Make misc_open_simulate() and misc_open_exclusive() static;
Update man pages with the requirements on the system environment
(resources) for ngdump job being executed in dry-run mode;
Provide hints for user (in stderr) in case when ngdump job in dry-run
mode failed due to inappropriate system environment.
Tested-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Introduce misc_open_simulate() to mark individual files as "opened
for write simulation".
Introduce misc_open_device() to open a file either in "usual", or
in "simulation" mode, depending on the passed argument
Tested-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Introduce a write simulation operation, which doesn't write actual
data and just updates the current position in the file.
This allows to emulate block lists for files located on raw devices
(not formatted with a file system). This is used by the next patches
in the series to implement '--dry-run' zipl option for dumps of all
types (not only ngdumps).
Introduce a 'misc file descriptor', which allows to mark individual
files as "opened in a simulation mode".
Whenever bulding a bootmap file, use either real write, or write
simulation depending on the mode set in the 'misc file descriptor'.
Tested-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
zipl creates a temp bootmap file to keep the original file in case of an
error. Delete this temp file in case of an error.
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Add a command line option and configuration section keyword to control
the zIPL secure boot support. This option is named "secure" and can take
one of three values:
auto (default)
Write signatures if available and supported by the system.
1
Signatures are written independent of support indicated by the local
system. Also missing signatures for stage 3 and kernel IPL files
will result in an error.
0
No signatures will be written.
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is based on the s390-tools-1.39.0 version.
Changes on top of s390-tools-1.39.0:
- Add MIT license to all source files
- Add LICENSE file
- Transform REAMDE to README.md (markdown)
- Add AUTHORS.md file
- Add CONTRIBUTING.md file
- Move changelog from README to CHANGELOG.md file
Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
