feat: shell PATH resolution, env propagation, /etc/bshrc

kernel/src/process/manager.rs

@@ -586,7 +586,7 @@ impl ProcessManager {
         // The stack is now mapped, so we can write to it via physical addresses
         let default_env: [&[u8]; 5] = [
             b"PATH=/bin:/sbin:/usr/local/cbin\0",
-            b"HOME=/\0",
+            b"HOME=/home\0",
             b"TERM=vt100\0",
             b"USER=root\0",
             b"SHELL=/bin/bsh\0",
@@ -2586,7 +2586,7 @@ impl ProcessManager {
         // and write via the physical frames
         let default_env: [&[u8]; 5] = [
             b"PATH=/bin:/sbin:/usr/local/cbin\0",
-            b"HOME=/\0",
+            b"HOME=/home\0",
             b"TERM=vt100\0",
             b"USER=root\0",
             b"SHELL=/bin/bsh\0",
@@ -2830,7 +2830,7 @@ impl ProcessManager {
 
         let default_env: [&[u8]; 5] = [
             b"PATH=/bin:/sbin:/usr/local/cbin\0",
-            b"HOME=/\0",
+            b"HOME=/home\0",
             b"TERM=vt100\0",
             b"USER=root\0",
             b"SHELL=/bin/bsh\0",

scripts/create_ext2_disk.sh

@@ -159,6 +159,27 @@ root:x:0:
 nobody:x:65534:
 GROUP
 
+            # Create /etc/bshrc - startup config for the bsh ECMAScript shell
+            cat > /mnt/ext2/etc/bshrc << 'BSHRC'
+// Breenix Shell Configuration
+// This file is evaluated as ECMAScript by bsh on startup.
+
+// Global PATH - all standard binary directories
+env("PATH", "/bin:/sbin:/usr/local/cbin");
+
+// Home directory
+env("HOME", "/root");
+
+// Shell identification
+env("SHELL", "/bin/bsh");
+
+// Hostname
+env("HOSTNAME", "breenix");
+
+// Greeting
+console.log("Welcome to Breenix OS");
+BSHRC
+
             # Create /tmp for filesystem write tests
             mkdir -p /mnt/ext2/tmp
 
@@ -293,6 +314,27 @@ root:x:0:
 nobody:x:65534:
 GROUP
 
+    # Create /etc/bshrc - startup config for the bsh ECMAScript shell
+    cat > "$MOUNT_DIR/etc/bshrc" << 'BSHRC'
+// Breenix Shell Configuration
+// This file is evaluated as ECMAScript by bsh on startup.
+
+// Global PATH - all standard binary directories
+env("PATH", "/bin:/sbin:/usr/local/cbin");
+
+// Home directory
+env("HOME", "/root");
+
+// Shell identification
+env("SHELL", "/bin/bsh");
+
+// Hostname
+env("HOSTNAME", "breenix");
+
+// Greeting
+console.log("Welcome to Breenix OS");
+BSHRC
+
     # Create /tmp for filesystem write tests
     mkdir -p "$MOUNT_DIR/tmp"
 

userspace/programs/src/bsh.rs

@@ -1046,10 +1046,10 @@ fn read_fd_to_string(fd: libbreenix::types::Fd) -> String {
 fn default_path() -> String {
     if let Ok(content) = std::fs::read_to_string("/proc/breenix/testing") {
         if content.trim() == "1" {
-            return String::from("/bin:/usr/bin:/usr/local/test/bin");
+            return String::from("/bin:/sbin:/usr/local/cbin:/usr/local/test/bin");
         }
     }
-    String::from("/bin:/usr/bin")
+    String::from("/bin:/sbin:/usr/local/cbin")
 }
 
 /// Resolve a command name to a full path by searching PATH directories.