GetLastError() and libc::stat() were unnecessary as libstd offered
equivalents.
LPWSTR2String() was technically unsafe if passed a slice without
zeroes, but it's a private function and was probably always called
correctly in practice.
Part of the code was transliterated from GNU's implementation in C,
and used flags to store settings. Instead, we can use enums to avoid
magic values or binary operations to extract flags.
- prevent duplicate errors from both us and `walkdir` by instructing `walkdir'
to skip directories we failed to read metadata for.
- don't directly display `walkdir`'s errors, but format them ourselves to
match gnu's format
Fix a mix-up between ownership and mode. The latter (mode / file permissions)
can also be set on windows (which however only affects the read-only flag),
while there doesn't seem to be a straight-forward way to change file ownership
on windows.
Copy the acl as well when copying the mode. This is a non-default feature and can be
enabled with --features feat_acl, because it doesn't seem to work on CI.
It is only available for unix so far.
Copy the SELinux context if possible.
Rust recently added new error kinds, which causes tests to fail on beta/nightly.
However, we can't match for these new error kinds because they are marked as unstable.
As a workaround we call `.to_string()` on the original error and strip
the ` (os error XX)` bit. The downside of this is that
the error messages are not capitalized.
Adapt the tests to work with the changed function interfaces. Added a
convenience function to construct a `clap` application that's used to test the
functions from a "user"-perspective.
Change all relevant functions to return `UResult`s from `BackupError` instead
of error strings. Make `determine_backup_mode/suffix` accept `clap::ArgMatches`
as input argument to parse for the arguments themselves, using the arguments
with are defined in the `arguments` submodule.
This way the user only needs to include the pre-defined arguments from the
`arguments` module and passes a reference to the applications `ArgMatches` into
the respective functions here. The functions then take care of handling the
arguments. It is recommended to use the arguments provided in the `arguments`
module over custom-defined ones.
Implements an error type based on `UError` that replaces the previously used
error strings. The errors are currently returned when determining the backup
mode, but extensions for future uses are already in place as comments.
Removes the `return_if_err!` and `safe_unwrap!` macros, which have now
been replaces by `crash_if_err!` throughout the whole code and thus
aren't used any longer.
