added /proc/cmdline

Signed-off-by: Navid Yaghoobi <navidys@fedoraproject.org>

FEATURES.md

@@ -1,6 +1,8 @@
 Supported Features
 * ✅ `/proc/buddyinfo`
 
+* ✅ `/proc/cmdline`
+
 * ✅ `/proc/cpuinfo`
 
 * ✅ `/proc/loadavg`

examples/cmdline.rs

@@ -0,0 +1,6 @@
+use procsys::cmdline;
+
+fn main() {
+    let sys_cmdline = cmdline::collect().expect("system boot cmdline");
+    println!("{:?}", sys_cmdline);
+}

src/cmdline.rs

@@ -0,0 +1,38 @@
+use std::path::Path;
+
+use crate::{error::CollectResult, utils};
+
+/// collects information about system boot cmdline
+/// # Example
+/// ```
+/// use procsys::cmdline;
+///
+/// let sys_cmdline = cmdline::collect().expect("system boot cmdline");
+/// println!("{:?}", sys_cmdline);
+///
+pub fn collect() -> CollectResult<Vec<String>> {
+    let mut boot_cmdline: Vec<String> = Vec::new();
+
+    let bootcmd = utils::collect_info_string("cmdline", Path::new("/proc"))?;
+
+    if bootcmd.is_some() {
+        boot_cmdline = bootcmd
+            .unwrap()
+            .split_whitespace()
+            .map(str::to_string)
+            .collect();
+    }
+
+    Ok(boot_cmdline)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn sys_bootcmd() {
+        let bootcmd = collect().expect("system boot cmdline");
+        assert!(!bootcmd.is_empty())
+    }
+}

src/lib.rs

@@ -1,6 +1,7 @@
 #![doc = include_str!("../README.md")]
 
 pub mod buddyinfo;
+pub mod cmdline;
 pub mod cpuinfo;
 pub mod error;
 pub mod kernel_random;