- The size of a 2GiB partition (in bytes) is larger than the largest
32-bit signed integer; we hit signed overflow while calculating
2^11 * 2^10 * 2^10 and the test fails.
- Switch the whole table of sizes to qint64 instead.
- For testing purposes only, introduce a _qi suffix for qint64.
FIXES#1430
- The manpage for umount says that -R can only be used with
a mount point (e.g. /usr/local) and not a device name;
this makes sense because a device might be mounted in multiple
locations, but the mountpoint (and things mounted under it) lives
in the filesystem tree.
- Existing code tried to unmount -R the device, not the mount point,
and so always failed; leaving things mounted that shouldn't.
- because mount() returns an exit code, and 0 is "success",
the if (!code) was backwards: when mounting succeeded, the
TemporaryMount object thought it failed.
- This leads to temp-mounts being left *all over* the place
from os-prober and fstab-handling.
- See editorial in the code-comment. Still need to test that
chroot(8) doesn't need a full path, otherwise this will
go to /usr/bin/env udevadm to force lookup (redundantly
if not in a chroot)
Currently, all size units are expressed as KiB, MiB or GiB (resp. 2^10,
2^20 or 2^30).
In order to maximize compatibility and consistent results with other
partitioning tools, this commit adds support for sizes expressed as KB,
MB or GB (resp. 10^3, 10^6 or 10^9).
This change won't affect existing users, it simply adds a new option
that wasn't previously handled.
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
Currently, a number of configuration parsing-related functions and
classes use only `int` type for dealing with integers. Should the user
need a bigger integer value, this would result in an erroneous value
being used (`0`), as the correct value would overflow the 32-bits type.
In order to prevent these overflow, this patch replaces `int` with
`qint64` in the following functions & classes :
* CalamaresUtils::yamlScalarToVariant()
* CalamaresUtils::getInteger
* NamedSuffix
* PartitionSize
This way, sizes or other integer values greater than 2^31 (for signed
types) can be used.
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
- Most of the time the working dir and stdin are not important,
you just want to run a command in the host, so simplify that
by providing a suitable overload.
- Use that overload from the partition service (for mount and sync).
- The InternalManager object should have at most one living
instance at a time.
- getInternal() hands out shared_ptr<>s to the one living instance,
or creates a new one.
- The creation of a new InternalManager shouldn't count as a reference
to it, and it mustn't be deleted after the shared_ptr<>s have done
their work.
- So static shared_ptr<InternalManager> was the wrong choice,
since that leads to double deletes.
- While here, be a little more chatty when loading KPMCore.
- Starting to centralize utility code for partitioning into
libcalamares instead of scattered and weirdly shared between
modules.
- This particular commit breaks compiling the modules, though.
- The sub-directories under libcalamares (e.g. Utils, ..)
all live in namespace CalamaresUtils (well, except for Logger).
The services (e.g. subdirs other than utils/) live in their
own nested namespace, so partitioning should go into
CalamaresUtils::Partition for consistency.
- Clang 8 can detect that there is no need for a return if all
previous paths already return. GCC 8 does not. Clang warns if
the unreachable return is there, GCC errors out if it isn't.
- Introduce a hack NOTREACHED that comments-out on Clang, and
marks as unreachable (but still present) on GCC.
- This might go away with an [[unreachable]] annotation or
similar.
- Although None will be filtered out already by unitsComparable(),
include it in the switch to avoid a warning .. then we can
drop the post-switch return since the switch covers all possible
values of the enum.
- Use unitsComparable where applicable
- Use SizeUnit instead of unit_t -- since this is a template
specialization, we have the more meaningful type name to
use, instead of the generic one.
- Not all kinds of units are comparable. Introduce a method
in PartitionSize to check for comparability (this could
also be a free method, but seems more tidy here because it
is specifically about comparing in the context of partition sizes).
Using PartUtils::PartSize as reference, this commit creates a new
PartitionSize class in libcalamares, which will then be used in every
module needing such a class.
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
