allow for spaces in path

src/live.rs

@@ -20,6 +20,23 @@ pub struct LiveProcess {
     executable: Vec<(u64, u64)>, // r-x regions — where valid code/vtable-slot targets must land
 }
 
+/// The pathname field of a `/proc/<pid>/maps` line — everything after the fifth whitespace-delimited field.
+/// It must NOT be read as "whatever follows the last whitespace": a mapped path may contain spaces (Steam's
+/// default install directory is `.../common/Counter-Strike Global Offensive/...`), and taking the last field
+/// yields a fragment that fails the leading-`/` test, so the library is silently dropped from the map and
+/// every lookup for it then reports it as not mapped. Empty for an anonymous mapping.
+fn maps_path(line: &str) -> &str {
+    let mut rest = line;
+    for _ in 0..5 {
+        rest = rest.trim_start();
+        match rest.find(char::is_whitespace) {
+            Some(i) => rest = &rest[i..],
+            None => return "",
+        }
+    }
+    rest.trim_start()
+}
+
 impl LiveProcess {
     pub fn attach(pid: u32) -> Result<Self> {
         let maps = std::fs::read_to_string(format!("/proc/{pid}/maps"))
@@ -35,7 +52,7 @@ impl LiveProcess {
                 None => continue,
             };
             let perms = rest.split(' ').next().unwrap_or("");
-            let path = line.rsplit_once(char::is_whitespace).map_or("", |(_, p)| p);
+            let path = maps_path(line);
             let Some((start, end)) = range.split_once('-').and_then(|(a, b)| {
                 Some((
                     u64::from_str_radix(a, 16).ok()?,
@@ -308,3 +325,39 @@ pub fn call_remote(pid: i32, func: u64, args: &[u64]) -> Result<CallResult> {
 fn errno() -> i32 {
     unsafe { *libc::__errno_location() }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::maps_path;
+
+    #[test]
+    fn maps_path_survives_spaces_in_the_mapped_path() {
+        // Steam's default install directory contains spaces; taking the last whitespace-delimited field
+        // yields "Offensive/..." which fails the leading-`/` test, so the library silently vanishes from
+        // the map and the live oracle reports it as not mapped.
+        let spaced = "7f1a2b000000-7f1a2c000000 r-xp 00000000 08:01 12345      \
+                      /home/cs2/.steam/SteamApps/common/Counter-Strike Global Offensive/game/csgo/bin/linuxsteamrt64/libserver.so";
+        assert_eq!(
+            maps_path(spaced),
+            "/home/cs2/.steam/SteamApps/common/Counter-Strike Global Offensive/game/csgo/bin/linuxsteamrt64/libserver.so"
+        );
+
+        // The no-space case must be unchanged.
+        let plain = "7f1a2b000000-7f1a2c000000 r-xp 00000000 08:01 12345      /home/snake/game/csgo/bin/linuxsteamrt64/libserver.so";
+        assert_eq!(
+            maps_path(plain),
+            "/home/snake/game/csgo/bin/linuxsteamrt64/libserver.so"
+        );
+
+        // An anonymous mapping has no pathname — it must read as EMPTY, since that is what marks the
+        // writable heap regions the instance scan walks.
+        assert_eq!(
+            maps_path("24557800000-24597800000 rw-p 00000000 00:00 0 "),
+            ""
+        );
+        assert_eq!(
+            maps_path("29618000-29639000 rw-p 00000000 00:00 0     [heap]"),
+            "[heap]"
+        );
+    }
+}