Implement MacOS support

[adriangalilea]

I tried to install it on mac and got:

cargo install disktest
    Updating crates.io index
  Downloaded disktest v1.14.0
  Downloaded 1 crate (13.6 KB) in 0.78s
  Installing disktest v1.14.0
    Updating crates.io index
     Locking 82 packages to latest compatible versions
      Adding linux-raw-sys v0.4.14 (latest: v0.6.5)
      Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
      Adding windows-core v0.52.0 (latest: v0.58.0)
      Adding windows-sys v0.52.0 (latest: v0.59.0)
  Downloaded anstream v0.6.15
  Downloaded anstyle v1.0.8
  Downloaded anstyle-query v1.1.1
  Downloaded anstyle-parse v0.2.5
  Downloaded colorchoice v1.0.2
  Downloaded is_terminal_polyfill v1.70.1
  Downloaded clap_lex v0.7.2
  Downloaded ppv-lite86 v0.2.20
  Downloaded core-foundation-sys v0.8.7
  Downloaded zerocopy-derive v0.7.35
  Downloaded spin v0.9.8
  Downloaded tempfile v3.12.0
  Downloaded clap_builder v4.5.15
  Downloaded syn v2.0.75
  Downloaded zerocopy v0.7.35
  Downloaded clap v4.5.16
  Downloaded libc v0.2.158
  Downloaded cc v1.1.13
  Downloaded ring v0.17.8
  Downloaded movavg v2.3.0
  Downloaded disktest-lib v1.0.0
  Downloaded disktest-rawio v1.0.0
  Downloaded 22 crates (6.0 MB) in 0.73s (largest was `ring` at 4.2 MB)
   Compiling libc v0.2.158
   Compiling proc-macro2 v1.0.86
   Compiling unicode-ident v1.0.12
   Compiling autocfg v1.3.0
   Compiling cfg-if v1.0.0
   Compiling byteorder v1.5.0
   Compiling utf8parse v0.2.2
   Compiling shlex v1.3.0
   Compiling anstyle v1.0.8
   Compiling anstyle-query v1.1.1
   Compiling anstyle-parse v0.2.5
   Compiling colorchoice v1.0.2
   Compiling rustix v0.38.34
   Compiling cc v1.1.13
   Compiling is_terminal_polyfill v1.70.1
   Compiling anyhow v1.0.86
   Compiling clap_lex v0.7.2
   Compiling anstream v0.6.15
   Compiling bitflags v2.6.0
   Compiling core-foundation-sys v0.8.7
   Compiling num-traits v0.2.19
   Compiling movavg v2.3.0
   Compiling signal-hook v0.3.17
   Compiling strsim v0.11.1
   Compiling clap_builder v4.5.15
   Compiling ring v0.17.8
   Compiling iana-time-zone v0.1.60
   Compiling fastrand v2.1.0
   Compiling once_cell v1.19.0
   Compiling untrusted v0.9.0
   Compiling spin v0.9.8
   Compiling clap v4.5.16
   Compiling chrono v0.4.38
   Compiling quote v1.0.36
   Compiling getrandom v0.2.15
   Compiling errno v0.3.9
   Compiling rand_core v0.6.4
   Compiling syn v2.0.75
   Compiling signal-hook-registry v1.4.2
   Compiling disktest-rawio v1.0.0
error[E0432]: unresolved import `libc::POSIX_FADV_DONTNEED`
  --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:14:26
   |
14 | use libc::{c_int, off_t, POSIX_FADV_DONTNEED, S_IFBLK, S_IFCHR, S_IFMT};
   |                          ^^^^^^^^^^^^^^^^^^^
   |                          |
   |                          no `POSIX_FADV_DONTNEED` in the root
   |                          help: a similar name exists in the module: `POSIX_MADV_DONTNEED`

error[E0425]: cannot find value `BLKPBSZGET` in crate `libc`
  --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:96:27
   |
96 |                     libc::BLKPBSZGET, // get physical sector size.
   |                           ^^^^^^^^^^ not found in `libc`

error[E0425]: cannot find function `posix_fadvise` in crate `libc`
   --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:148:19
    |
148 |             libc::posix_fadvise(
    |                   ^^^^^^^^^^^^^ help: a function with a similar name exists: `posix_madvise`
    |
   ::: /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/libc-0.2.158/src/unix/bsd/mod.rs:675:5
    |
675 |     pub fn posix_madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int) -> ::c_int;
    |     ------------------------------------------------------------------------------------ similarly named function `posix_madvise` defined here

error[E0308]: mismatched types
  --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:74:43
   |
74 |             let mode_ifmt = meta.mode() & S_IFMT;
   |                                           ^^^^^^ expected `u32`, found `u16`

error[E0277]: no implementation for `u32 & u16`
  --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:74:41
   |
74 |             let mode_ifmt = meta.mode() & S_IFMT;
   |                                         ^ no implementation for `u32 & u16`
   |
   = help: the trait `BitAnd<u16>` is not implemented for `u32`
   = help: the following other types implement trait `BitAnd<Rhs>`:
             <&'a u32 as BitAnd<u32>>
             <&u32 as BitAnd<&u32>>
             <u32 as BitAnd<&u32>>
             <u32 as BitAnd>

error[E0308]: mismatched types
  --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:75:29
   |
75 |             if mode_ifmt == S_IFBLK {
   |                ---------    ^^^^^^^ expected `u32`, found `u16`
   |                |
   |                expected because this is `u32`
   |
help: you can convert a `u16` to a `u32`
   |
75 |             if mode_ifmt == S_IFBLK.into() {
   |                                    +++++++

error[E0308]: mismatched types
  --> /Users/adrian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/disktest-rawio-1.0.0/src/linux.rs:78:29
   |
78 |             if mode_ifmt == S_IFCHR {
   |                ---------    ^^^^^^^ expected `u32`, found `u16`
   |                |
   |                expected because this is `u32`
   |
help: you can convert a `u16` to a `u32`
   |
78 |             if mode_ifmt == S_IFCHR.into() {
   |                                    +++++++

Some errors have detailed explanations: E0277, E0308, E0425, E0432.
For more information about an error, try `rustc --explain E0277`.
error: could not compile `disktest-rawio` (lib) due to 7 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `disktest v1.14.0`, intermediate artifacts can be found at `/var/folders/lr/p37vprfd3hg2dlym5br0jx3r0000gn/T/cargo-installLJ1Yat`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

[mbuesch]

Hi, thanks for your question!

Disktest is currently only supported on Linux and Windows.
Mainly, just because that are the operating systems I work with.

The OS interface is abtracted in the disktest-rawio crate. That's most likely the only place that needs changes for MacOS.

If you are interested, please feel free to prepare a Pull Request.
If you decide to do that, please ensure to thoroughly test it, though, because I can't test it.
I am interested to merge MacOS support as a second class OS (only compile-tested in CI before release).