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<a href="#763" id="763">763</a></pre></div><pre class="rust"><code><span class="comment">// Copyright (C) 2017-2025 Red Hat, Inc.
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the
// Software without restriction, including without
// limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice
// shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Author: Tony Asleson <tasleson@redhat.com>
</span><span class="attr">#![allow(non_camel_case_types)]
</span><span class="kw">use </span><span class="kw">super</span>::error::<span class="kw-2">*</span>;
<span class="kw">use </span>std::convert::TryFrom;
<span class="kw">use </span>std::ffi::CStr;
<span class="kw">use </span>std::ffi::CString;
<span class="kw">use </span>std::os::raw::c_void;
<span class="kw">use </span>std::os::raw::{c_char, c_int};
<span class="comment">// Types for opaque C types
</span><span class="kw">enum </span>c_lsm_string_list {}
<span class="kw">enum </span>c_lsm_error {}
<span class="kw">enum </span>c_lsm_led_handle {}
<span class="kw">enum </span>c_lsm_led_slot_itr {}
<span class="kw">enum </span>c_lsm_led_slot {}
<span class="doccomment">/// Possible values of link type.
</span><span class="attr">#[repr(C)]
#[derive(Debug, Copy, Clone, PartialEq, Eq)]
</span><span class="kw">pub enum </span>LinkType {
<span class="doccomment">/// No support
</span>NoSupport = -<span class="number">2</span>,
<span class="doccomment">/// Unknown
</span>Unknown = -<span class="number">1</span>,
<span class="doccomment">/// Fibre channel
</span>Fc = <span class="number">0</span>,
<span class="doccomment">/// Serial Storage Architecture, old IBM tech.
</span>Ssa = <span class="number">2</span>,
<span class="doccomment">/// Serial Bus Protocol, used by IEEE 1394
</span>Sbp = <span class="number">3</span>,
<span class="doccomment">/// SCSI RDMA Protocol
</span>Srp = <span class="number">4</span>,
<span class="doccomment">/// Internet Small Computer System Interface
</span>Iscsi = <span class="number">5</span>,
<span class="doccomment">/// Serial attached SCSI
</span>Sas = <span class="number">6</span>,
<span class="doccomment">/// Automation/Drive Interface Transport Protocol, often used by Tape.
</span>Adt = <span class="number">7</span>,
<span class="doccomment">/// PATA/IDE or SATA.
</span>Ata = <span class="number">8</span>,
<span class="comment">// USB - Universal Serial Bus
</span>Usb = <span class="number">9</span>,
<span class="doccomment">/// SCSI over PCI-e
</span>Sop = <span class="number">10</span>,
<span class="doccomment">/// PCI-e, e.g. NVMe
</span>Pcie = <span class="number">11</span>,
}
<span class="attr">#[link(name = <span class="string">"storagemgmt"</span>)]
</span><span class="kw">extern </span><span class="string">"C" </span>{
<span class="kw">fn </span>lsm_local_disk_list(
disk_paths: <span class="kw-2">*mut *mut </span>c_lsm_string_list,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_string_list_free(lsm_string: <span class="kw-2">*const </span>c_lsm_string_list) -> c_int;
<span class="kw">fn </span>lsm_string_list_size(lsm_string_list: <span class="kw-2">*const </span>c_lsm_string_list) -> u32;
<span class="kw">fn </span>lsm_string_list_elem_get(
lsm_string_list: <span class="kw-2">*const </span>c_lsm_string_list,
index: u32,
) -> <span class="kw-2">*const </span>c_char;
<span class="kw">fn </span>lsm_local_disk_vpd83_search(
vpd83: <span class="kw-2">*const </span>c_char,
lsm_string_list: <span class="kw-2">*mut *mut </span>c_lsm_string_list,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_serial_num_get(
disk_path: <span class="kw-2">*const </span>c_char,
serial_num: <span class="kw-2">*mut *mut </span>c_char,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_vpd83_get(
disk_path: <span class="kw-2">*const </span>c_char,
vpd83: <span class="kw-2">*mut *mut </span>c_char,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_health_status_get(
disk_path: <span class="kw-2">*const </span>c_char,
health_status: <span class="kw-2">&mut </span>i32,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_rpm_get(
disk_path: <span class="kw-2">*const </span>c_char,
rpm: <span class="kw-2">&mut </span>i32,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_link_type_get(
disk_path: <span class="kw-2">*const </span>c_char,
link_type: <span class="kw-2">*mut </span>LinkType,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_ident_led_on(
disk_path: <span class="kw-2">*const </span>c_char,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_ident_led_off(
disk_path: <span class="kw-2">*const </span>c_char,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_fault_led_on(
disk_path: <span class="kw-2">*const </span>c_char,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_fault_led_off(
disk_path: <span class="kw-2">*const </span>c_char,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_led_status_get(
disk_path: <span class="kw-2">*const </span>c_char,
led_status: <span class="kw-2">&mut </span>u32,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_local_disk_link_speed_get(
disk_path: <span class="kw-2">*const </span>c_char,
link_speed: <span class="kw-2">&mut </span>u32,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
) -> c_int;
<span class="kw">fn </span>lsm_error_number_get(lsm_error: <span class="kw-2">*const </span>c_lsm_error) -> c_int;
<span class="kw">fn </span>lsm_error_message_get(lsm_error: <span class="kw-2">*const </span>c_lsm_error) -> <span class="kw-2">*const </span>c_char;
<span class="kw">fn </span>lsm_error_free(lsm_error: <span class="kw-2">*const </span>c_lsm_error) -> c_int;
<span class="kw">fn </span>lsm_led_handle_get(handle: <span class="kw-2">*mut *mut </span>c_lsm_led_handle, flags: u64) -> c_int;
<span class="kw">fn </span>lsm_led_handle_free(handle: <span class="kw-2">*const </span>c_lsm_led_handle);
<span class="kw">fn </span>lsm_led_slot_iterator_free(
handle: <span class="kw-2">*const </span>c_lsm_led_handle,
slot_itr: <span class="kw-2">*const </span>c_lsm_led_slot_itr,
);
<span class="kw">fn </span>lsm_led_slot_iterator_get(
handle: <span class="kw-2">*const </span>c_lsm_led_handle,
slot_itr: <span class="kw-2">*mut *mut </span>c_lsm_led_slot_itr,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
flags: u64,
) -> c_int;
<span class="kw">fn </span>lsm_led_slot_iterator_reset(
handle: <span class="kw-2">*const </span>c_lsm_led_handle,
slot_itr: <span class="kw-2">*const </span>c_lsm_led_slot_itr,
);
<span class="kw">fn </span>lsm_led_slot_next(
handle: <span class="kw-2">*const </span>c_lsm_led_handle,
itr: <span class="kw-2">*mut </span>c_lsm_led_slot_itr,
) -> <span class="kw-2">*const </span>c_lsm_led_slot;
<span class="kw">fn </span>lsm_led_slot_status_get(slot: <span class="kw-2">*const </span>c_lsm_led_slot) -> u32;
<span class="kw">fn </span>lsm_led_slot_status_set(
handle: <span class="kw-2">*const </span>c_lsm_led_handle,
slot: <span class="kw-2">*const </span>c_lsm_led_slot,
status: u32,
lsm_error: <span class="kw-2">*mut *mut </span>c_lsm_error,
flag: u64,
) -> c_int;
<span class="kw">fn </span>lsm_led_slot_id(slot: <span class="kw-2">*const </span>c_lsm_led_slot) -> <span class="kw-2">*const </span>c_char;
<span class="kw">fn </span>lsm_led_slot_device(slot: <span class="kw-2">*const </span>c_lsm_led_slot) -> <span class="kw-2">*const </span>c_char;
}
<span class="kw">extern </span><span class="string">"C" </span>{
<span class="kw">fn </span>free(ptr: <span class="kw-2">*mut </span>c_void);
}
<span class="kw">fn </span>c_char_ptr_to_string(c_str: <span class="kw-2">*const </span>c_char) -> String {
<span class="kw">let </span>m_str;
<span class="kw">unsafe </span>{
m_str = CStr::from_ptr(c_str);
}
<span class="kw">let </span>str_slice = m_str.to_str().expect(<span class="string">"Invalid UTF-8"</span>);
str_slice.to_owned()
}
<span class="kw">fn </span>lsm_c_error_to_rust(lsm_error: <span class="kw-2">*const </span>c_lsm_error) -> LsmError {
<span class="kw">let </span>rc;
<span class="kw">unsafe </span>{
<span class="kw">if </span>!lsm_error.is_null() {
<span class="kw">let </span>code = lsm_error_number_get(lsm_error);
<span class="kw">if </span>code != -<span class="number">1 </span>{
<span class="kw">let </span>message = lsm_error_message_get(lsm_error);
<span class="kw">if </span>!message.is_null() {
rc = lsm_error_code_to_lsm_error(code, c_char_ptr_to_string(message))
} <span class="kw">else </span>{
rc = lsm_error_code_to_lsm_error(
code,
String::from(<span class="string">"no additional information provided"</span>),
)
}
<span class="comment">// We had a valid pointer, so release the memory and expect success!
</span><span class="macro">assert!</span>(lsm_error_free(lsm_error) == <span class="number">0</span>);
} <span class="kw">else </span>{
<span class="macro">panic!</span>(<span class="string">"Invalid lsm_error pointer used for error informational retrieval!"</span>);
}
} <span class="kw">else </span>{
rc = LsmError::LibBug(String::from(<span class="string">"The C lsm error ptr was NULL"</span>));
}
}
rc
}
<span class="kw">fn </span>c_lsm_string_list_to_vec(c_string_list: <span class="kw-2">*const </span>c_lsm_string_list) -> Vec<String> {
<span class="kw">let </span><span class="kw-2">mut </span>result_list = Vec::new();
<span class="kw">if </span>!c_string_list.is_null() {
<span class="kw">unsafe </span>{
<span class="kw">let </span>num_items = lsm_string_list_size(c_string_list);
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..num_items {
<span class="kw">let </span>disk_path = CStr::from_ptr(lsm_string_list_elem_get(c_string_list, i));
result_list.push(disk_path.to_string_lossy().into_owned());
}
<span class="macro">assert!</span>(lsm_string_list_free(c_string_list) == <span class="number">0</span>);
}
}
result_list
}
<span class="doccomment">/// Searches disk by supplied SCSI VPD 0x83 page NAA type ID.
///
/// Search all the disk paths of specified SCSI VPD 0x83 page NAA type ID.
/// For any ATA and other non-SCSI protocol disks supporting VPD 0x83 pages
/// NAA ID, their disk path will also be included.
///
/// Note: There maybe more than one disk path for any specified disk.
</span><span class="kw">pub fn </span>vpd83_search(vpd83: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<String>> {
<span class="kw">let </span>c_search_string = CString::new(vpd83).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span><span class="kw-2">mut </span>disk_paths = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>rc =
lsm_local_disk_vpd83_search(c_search_string.as_ptr(), <span class="kw-2">&mut </span>disk_paths, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(c_lsm_string_list_to_vec(disk_paths))
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="doccomment">/// Query serial number of specified disk path
///
/// Query the serial number of specified disk path.
/// For SCSI/SAS/SATA/ATA disks, it will be extracted from SCSI VPD 0x80 page.
</span><span class="kw">pub fn </span>serial_num_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><String> {
<span class="kw">let </span><span class="kw-2">mut </span>serial_num = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>c_sn = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span>rc = lsm_local_disk_serial_num_get(c_sn.as_ptr(), <span class="kw-2">&mut </span>serial_num, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="kw">let </span>sn = CStr::from_ptr(serial_num).to_string_lossy().into_owned();
free(serial_num <span class="kw">as </span><span class="kw-2">*mut </span>c_void);
<span class="prelude-val">Ok</span>(sn)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="doccomment">/// Query scsi VPD 0x83 NAA ID.
</span><span class="kw">pub fn </span>vpd83_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><String> {
<span class="kw">let </span><span class="kw-2">mut </span>vpd83 = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>disk_path = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span>rc = lsm_local_disk_vpd83_get(disk_path.as_ptr(), <span class="kw-2">&mut </span>vpd83, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="kw">let </span>vpd = CStr::from_ptr(vpd83).to_string_lossy().into_owned();
free(vpd83 <span class="kw">as </span><span class="kw-2">*mut </span>c_void);
<span class="prelude-val">Ok</span>(vpd)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="doccomment">/// Possible health status of any disk.
</span><span class="attr">#[derive(Debug, Copy, Clone, PartialEq, Eq)]
</span><span class="kw">pub enum </span>HealthStatus {
<span class="doccomment">/// Unknown
</span>Unknown = -<span class="number">1</span>,
<span class="doccomment">/// Device self reports failure
</span>Fail = <span class="number">0</span>,
<span class="doccomment">/// Device self reports warning
</span>Warn = <span class="number">1</span>,
<span class="doccomment">/// Device self reports good
</span>Good = <span class="number">2</span>,
}
<span class="kw">impl </span>TryFrom<i32> <span class="kw">for </span>HealthStatus {
<span class="kw">type </span>Error = LsmError;
<span class="kw">fn </span>try_from(value: i32) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> {
<span class="kw">match </span>value {
<span class="number">0 </span>=> <span class="prelude-val">Ok</span>(HealthStatus::Fail),
<span class="number">1 </span>=> <span class="prelude-val">Ok</span>(HealthStatus::Warn),
<span class="number">2 </span>=> <span class="prelude-val">Ok</span>(HealthStatus::Good),
<span class="kw">_ </span>=> <span class="prelude-val">Ok</span>(HealthStatus::Unknown),
}
}
}
<span class="doccomment">/// Possible values for disk RPM.
</span><span class="attr">#[repr(i32)]
#[derive(Debug, Copy, Clone, PartialEq, Eq)]
</span><span class="kw">pub enum </span>Rpm {
<span class="doccomment">/// Unknown
</span>Unknown = -<span class="number">1</span>,
<span class="doccomment">/// Non-rotational media disk
</span>NonRotatingMedium = <span class="number">0</span>,
<span class="doccomment">/// rotational disk with unknown speed
</span>UnknownRotationalSpeed = <span class="number">1</span>,
<span class="doccomment">/// Rotating disk with specified speed in RPM
</span>Rpm(i32),
}
<span class="kw">impl </span>TryFrom<i32> <span class="kw">for </span>Rpm {
<span class="kw">type </span>Error = LsmError;
<span class="kw">fn </span>try_from(value: i32) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> {
<span class="kw">let </span>rc = <span class="kw">match </span>value {
-<span class="number">1 </span>=> Rpm::Unknown,
<span class="number">0 </span>=> Rpm::NonRotatingMedium,
<span class="number">1 </span>=> Rpm::UnknownRotationalSpeed,
<span class="kw">_ </span>=> Rpm::Rpm(value),
};
<span class="prelude-val">Ok</span>(rc)
}
}
<span class="doccomment">/// Query the health status of the specified disk path.
</span><span class="kw">pub fn </span>health_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><HealthStatus> {
<span class="kw">let </span><span class="kw-2">mut </span>status: i32 = <span class="number">0</span>;
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>disk_path = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span>rc = lsm_local_disk_health_status_get(disk_path.as_ptr(), <span class="kw-2">&mut </span>status, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
HealthStatus::try_from(status)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="doccomment">/// Query disk rotation speed.
</span><span class="kw">pub fn </span>rpm_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Rpm> {
<span class="kw">let </span><span class="kw-2">mut </span>rpm: i32 = <span class="number">0</span>;
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>disk_path = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span>rc = lsm_local_disk_rpm_get(disk_path.as_ptr(), <span class="kw-2">&mut </span>rpm, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
Rpm::try_from(rpm)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="kw">pub fn </span>list() -> <span class="prelude-ty">Result</span><Vec<String>> {
<span class="comment">// Query local disk paths. Currently, only SCSI, SAS, ATA and NVMe disks will be included.
//
</span><span class="doccomment">//! ```rust
//! extern crate lsm;
//!
//! use lsm::local_disk;
//!
//!fn main() {
//! let disks = local_disk::list().unwrap();
//!
//! for d in disks {
//! println!("{}", d);
//! }
//!}
//! ```
</span><span class="kw">let </span><span class="kw-2">mut </span>disk_paths = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>rc = lsm_local_disk_list(<span class="kw-2">&mut </span>disk_paths, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(c_lsm_string_list_to_vec(disk_paths))
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="doccomment">/// Query disk link type.
</span><span class="kw">pub fn </span>link_type_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><LinkType> {
<span class="kw">let </span><span class="kw-2">mut </span>link_type = LinkType::Unknown;
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>disk_path = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span>rc = lsm_local_disk_link_type_get(disk_path.as_ptr(), <span class="kw-2">&mut </span>link_type, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(link_type)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="kw">fn </span>disk_path_led(disk_path: <span class="kw-2">&</span>str, fault_led: bool, on: bool) -> <span class="prelude-ty">Result</span><()> {
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>dp = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">let </span>rc = <span class="kw">match </span>(fault_led, on) {
(<span class="bool-val">false</span>, <span class="bool-val">true</span>) => lsm_local_disk_ident_led_on(dp.as_ptr(), <span class="kw-2">&mut </span>lsm_error),
(<span class="bool-val">false</span>, <span class="bool-val">false</span>) => lsm_local_disk_ident_led_off(dp.as_ptr(), <span class="kw-2">&mut </span>lsm_error),
(<span class="bool-val">true</span>, <span class="bool-val">true</span>) => lsm_local_disk_fault_led_on(dp.as_ptr(), <span class="kw-2">&mut </span>lsm_error),
(<span class="bool-val">true</span>, <span class="bool-val">false</span>) => lsm_local_disk_fault_led_off(dp.as_ptr(), <span class="kw-2">&mut </span>lsm_error),
};
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(())
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="kw">pub fn </span>ident_led_on(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><()> {
<span class="comment">// Turn the identification LED on for specified disk path.
//
</span><span class="doccomment">//! ```rust
//! extern crate lsm;
//!
//! use lsm::local_disk;
//!
//!fn main() {
//! match local_disk::ident_led_on("/dev/sda") {
//! Err(e) => println!("Unable to turn on identification LED: reason {:?}", e),
//! Ok(_) => println!("Enjoy your blinking LED"),
//! }
//!}
//! ```
</span>disk_path_led(disk_path, <span class="bool-val">false</span>, <span class="bool-val">true</span>)
}
<span class="doccomment">/// Turn the identification LED off for specified disk path.
</span><span class="kw">pub fn </span>ident_led_off(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><()> {
disk_path_led(disk_path, <span class="bool-val">false</span>, <span class="bool-val">false</span>)
}
<span class="doccomment">/// Turn the fault LED on for specified disk path.
</span><span class="kw">pub fn </span>fault_led_on(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><()> {
disk_path_led(disk_path, <span class="bool-val">true</span>, <span class="bool-val">true</span>)
}
<span class="doccomment">/// Turn the fault LED off for specified disk path.
</span><span class="kw">pub fn </span>fault_led_off(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><()> {
disk_path_led(disk_path, <span class="bool-val">true</span>, <span class="bool-val">false</span>)
}
<span class="doccomment">/// LED has unknown status
</span><span class="kw">pub const </span>LED_STATUS_UNKNOWN: u32 = <span class="number">0x0000000000000001</span>;
<span class="doccomment">/// Identification LED is on
</span><span class="kw">pub const </span>LED_STATUS_IDENT_ON: u32 = <span class="number">0x0000000000000002</span>;
<span class="doccomment">/// Identification LED is off
</span><span class="kw">pub const </span>LED_STATUS_IDENT_OFF: u32 = <span class="number">0x0000000000000004</span>;
<span class="doccomment">/// Identification LED is unknown
</span><span class="kw">pub const </span>LED_STATUS_IDENT_UNKNOWN: u32 = <span class="number">0x0000000000000008</span>;
<span class="doccomment">/// Fault LED is on
</span><span class="kw">pub const </span>LED_STATUS_FAULT_ON: u32 = <span class="number">0x0000000000000010</span>;
<span class="doccomment">/// Fault LED is off
</span><span class="kw">pub const </span>LED_STATUS_FAULT_OFF: u32 = <span class="number">0x0000000000000020</span>;
<span class="doccomment">/// Fault LED is unknown
</span><span class="kw">pub const </span>LED_STATUS_FAULT_UNKNOWN: u32 = <span class="number">0x0000000000000040</span>;
<span class="doccomment">/// Retrieve current state of LED for specified disk path.
///
/// Note: Not all enclosures support both identification and fault LEDs.
///
/// Result is a bit sensitive field, see LED_STATUS_* constants
</span><span class="kw">pub fn </span>led_status_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><u32> {
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>led_status = <span class="number">0</span>;
<span class="kw">let </span>dp = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">unsafe </span>{
<span class="kw">let </span>rc = lsm_local_disk_led_status_get(dp.as_ptr(), <span class="kw-2">&mut </span>led_status, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(led_status)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="doccomment">/// Query the current negotiated disk link speed in Mbps
</span><span class="kw">pub fn </span>link_speed_get(disk_path: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><u32> {
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>link_speed = <span class="number">0</span>;
<span class="kw">let </span>dp = CString::new(disk_path).expect(<span class="string">"CString::new failed"</span>);
<span class="kw">unsafe </span>{
<span class="kw">let </span>rc = lsm_local_disk_link_speed_get(dp.as_ptr(), <span class="kw-2">&mut </span>link_speed, <span class="kw-2">&mut </span>lsm_error);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(link_speed)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
<span class="kw">fn </span>slot_id_get(slot: <span class="kw-2">*const </span>c_lsm_led_slot) -> String {
<span class="kw">let </span>id;
<span class="kw">unsafe </span>{
id = lsm_led_slot_id(slot);
}
<span class="macro">assert!</span>(!id.is_null());
c_char_ptr_to_string(id)
}
<span class="kw">fn </span>slot_device_get(slot: <span class="kw-2">*const </span>c_lsm_led_slot) -> <span class="prelude-ty">Option</span><String> {
<span class="kw">let </span>device;
<span class="kw">unsafe </span>{
device = lsm_led_slot_device(slot);
}
<span class="kw">if </span>device.is_null() {
<span class="prelude-val">None
</span>} <span class="kw">else </span>{
<span class="prelude-val">Some</span>(c_char_ptr_to_string(device))
}
}
<span class="doccomment">/// Opaque type for interacting with LED slots functionality.
</span><span class="kw">pub struct </span>LedSlots {
handle: <span class="kw-2">*mut </span>c_lsm_led_handle,
itr: <span class="kw-2">*mut </span>c_lsm_led_slot_itr,
curr_slot: <span class="kw-2">*const </span>c_lsm_led_slot,
curr_id: String,
}
<span class="kw">impl </span>Drop <span class="kw">for </span>LedSlots {
<span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) {
<span class="kw">unsafe </span>{
lsm_led_slot_iterator_free(<span class="self">self</span>.handle, <span class="self">self</span>.itr);
<span class="self">self</span>.itr = std::ptr::null_mut();
lsm_led_handle_free(<span class="self">self</span>.handle);
<span class="self">self</span>.handle = std::ptr::null_mut();
<span class="self">self</span>.curr_slot = std::ptr::null_mut();
}
}
}
<span class="kw">impl </span>LedSlots {
<span class="kw">fn </span>find_slot(<span class="kw-2">&mut </span><span class="self">self</span>, id: <span class="kw-2">&</span>str) -> bool {
<span class="kw">let </span><span class="kw-2">mut </span>rc = <span class="bool-val">false</span>;
<span class="kw">unsafe </span>{
<span class="comment">// When processing LEDs sequentially, this will help
</span><span class="kw">if </span>!<span class="self">self</span>.itr.is_null() {
<span class="kw">let </span>slot = lsm_led_slot_next(<span class="self">self</span>.handle, <span class="self">self</span>.itr);
<span class="kw">if </span>!slot.is_null() {
<span class="kw">let </span>slot_id = slot_id_get(slot);
<span class="kw">if </span>id == slot_id {
<span class="self">self</span>.curr_slot = slot;
<span class="self">self</span>.curr_id = slot_id;
<span class="kw">return </span><span class="bool-val">true</span>;
}
}
}
lsm_led_slot_iterator_reset(<span class="self">self</span>.handle, <span class="self">self</span>.itr);
<span class="kw">loop </span>{
<span class="kw">let </span>slot = lsm_led_slot_next(<span class="self">self</span>.handle, <span class="self">self</span>.itr);
<span class="kw">if </span>slot.is_null() {
<span class="kw">break</span>;
} <span class="kw">else </span>{
<span class="kw">let </span>slot_id = slot_id_get(slot);
<span class="kw">if </span>id == slot_id {
rc = <span class="bool-val">true</span>;
<span class="self">self</span>.curr_slot = slot;
<span class="self">self</span>.curr_id = slot_id;
<span class="kw">break</span>;
}
}
}
}
rc
}
<span class="kw">fn </span>slot_set(<span class="kw-2">&mut </span><span class="self">self</span>, id: <span class="kw-2">&</span>str) {
<span class="kw">if </span><span class="self">self</span>.curr_id != id {
<span class="macro">assert!</span>(<span class="self">self</span>.find_slot(id));
}
}
<span class="doccomment">/// Create a new instance of LED slots
</span><span class="kw">pub fn </span>new() -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> {
<span class="kw">unsafe </span>{
<span class="kw">let </span><span class="kw-2">mut </span>handle = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>itr = std::ptr::null_mut();
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">let </span>handle_rc = lsm_led_handle_get(<span class="kw-2">&mut </span>handle, <span class="number">0</span>);
<span class="kw">if </span>handle_rc == <span class="number">0 </span>{
<span class="kw">let </span>itr_rc = lsm_led_slot_iterator_get(handle, <span class="kw-2">&mut </span>itr, <span class="kw-2">&mut </span>lsm_error, <span class="number">0</span>);
<span class="kw">if </span>itr_rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(<span class="self">Self </span>{
handle,
itr,
curr_slot: std::ptr::null_mut(),
curr_id: String::new(),
})
} <span class="kw">else </span>{
<span class="comment">// We failed to get the iterator, but we did get the handle, so free it!
</span>lsm_led_handle_free(handle);
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_error_code_to_lsm_error(
handle_rc,
String::from(<span class="string">"LedSlot::new() failed, no additional information!"</span>),
))
}
}
}
<span class="doccomment">/// Retrieve the slots
</span><span class="kw">pub fn </span>slots_get(<span class="kw-2">&mut </span><span class="self">self</span>) -> Vec<LedSlot> {
<span class="kw">let </span><span class="kw-2">mut </span>rc = Vec::new();
<span class="kw">unsafe </span>{
lsm_led_slot_iterator_reset(<span class="self">self</span>.handle, <span class="self">self</span>.itr);
<span class="kw">loop </span>{
<span class="kw">let </span>slot = lsm_led_slot_next(<span class="self">self</span>.handle, <span class="self">self</span>.itr);
<span class="kw">if </span>!slot.is_null() {
<span class="kw">let </span>entry = LedSlot::new(slot);
rc.push(entry);
} <span class="kw">else </span>{
<span class="kw">break</span>;
}
}
}
rc
}
<span class="doccomment">/// Retrieve the LED status for the specified slot.
</span><span class="kw">pub fn </span>slot_status_get(<span class="kw-2">&mut </span><span class="self">self</span>, slot: <span class="kw-2">&</span>LedSlot) -> u32 {
<span class="self">self</span>.slot_set(<span class="kw-2">&</span>slot.id());
<span class="kw">unsafe </span>{ lsm_led_slot_status_get(<span class="self">self</span>.curr_slot) }
}
<span class="doccomment">/// Set the status of the specified slot, bit sensitive input state.
///
/// Please note that not all LED hardware supports both
/// identification and fault LEDs.
///
/// Using this API, please specify what you
/// would like regardless of support and the hardware will adhere to your request as best it can.
/// * LED_STATUS_IDENT_ON => Implies fault off
/// * LED_STATUS_FAULT_ON => Implies ident and fault on
/// * LED_STATUS_IDENT_OFF => Implies both ident and fault are off
/// * LED_STATUS_FAULT_OFF => Implies both ident and fault are off
/// * LSM_DISK_LED_STATUS_IDENT_OFF|LSM_DISK_LED_STATUS_FAULT_OFF
/// * LED_STATUS_IDENT_ON|LSM_DISK_LED_STATUS_FAULT_OFF
/// * LED_STATUS_FAULT_ON|LSM_DISK_LED_STATUS_IDENT_OFF
/// * LED_STATUS_IDENT_ON|LSM_DISK_LED_STATUS_FAULT_ON
///
</span><span class="kw">pub fn </span>slot_status_set(<span class="kw-2">&mut </span><span class="self">self</span>, slot: <span class="kw-2">&</span>LedSlot, state: u32) -> <span class="prelude-ty">Result</span><()> {
<span class="self">self</span>.slot_set(<span class="kw-2">&</span>slot.id());
<span class="kw">let </span><span class="kw-2">mut </span>lsm_error = std::ptr::null_mut();
<span class="kw">unsafe </span>{
<span class="kw">let </span>rc = lsm_led_slot_status_set(<span class="self">self</span>.handle, <span class="self">self</span>.curr_slot, state, <span class="kw-2">&mut </span>lsm_error, <span class="number">0</span>);
<span class="kw">if </span>rc == <span class="number">0 </span>{
<span class="prelude-val">Ok</span>(())
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(lsm_c_error_to_rust(lsm_error))
}
}
}
}
<span class="doccomment">/// Information about specific slot
///
/// Note: you can retrieve/set set of LED with out a block device present
</span><span class="kw">pub struct </span>LedSlot {
<span class="doccomment">/// Slot ID
</span>id: String,
<span class="doccomment">/// Device node for slot which may not be present (used for correlation)
</span>dev: <span class="prelude-ty">Option</span><String>,
}
<span class="kw">impl </span>LedSlot {
<span class="kw">fn </span>new(slot: <span class="kw-2">*const </span>c_lsm_led_slot) -> <span class="self">Self </span>{
<span class="self">Self </span>{
id: slot_id_get(slot),
dev: slot_device_get(slot),
}
}
<span class="doccomment">/// Slot ID of slot (this is not persistent across boots or dynamic reconfiguration)
</span><span class="kw">pub fn </span>id(<span class="kw-2">&</span><span class="self">self</span>) -> String {
<span class="self">self</span>.id.clone()
}
<span class="doccomment">/// Device node for block device which may not be present (you don't need a functional disk to change LED state)
</span><span class="kw">pub fn </span>device(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><String> {
<span class="self">self</span>.dev.clone()
}
}
</code></pre></div></section></main></body></html>