pty: implemented ioctl() for slave ptys

lux-operating-system · Oct 2, 2024 · 131c6a1 · 131c6a1
1 parent f99a94c
commit 131c6a1
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Showing 2 changed files with 20 additions and 2 deletions.
diff --git a/devices/pty/src/include/pty/pty.h b/devices/pty/src/include/pty/pty.h
@@ -18,6 +18,7 @@
 #define PTY_GET_SLAVE           (0x10 | IOCTL_OUT_PARAM)
 #define PTY_GRANT_PT            0x20
 #define PTY_UNLOCK_PT           0x30
+#define PTY_TTY_NAME            (0x40 | IOCTL_OUT_PARAM)
 
 typedef struct {
     // master read() will read from slave, write() will write to master

diff --git a/devices/pty/src/ioctl.c b/devices/pty/src/ioctl.c
@@ -92,9 +92,26 @@ void ptyIoctlMaster(IOCTLCommand *cmd) {
  */
 
 void ptyIoctlSlave(IOCTLCommand *cmd) {
-    /* todo */
     cmd->header.header.response = 1;
     cmd->header.header.length = sizeof(IOCTLCommand);
-    cmd->header.header.status = -ENOTTY;
+
+    int id = atoi(&cmd->path[4]);   // slave ID
+
+    switch(cmd->opcode) {
+    case PTY_TTY_NAME:
+        // return the number of the pty device
+        cmd->parameter = id;
+        cmd->header.header.status = 0;
+        break;
+
+    default:
+        if((cmd->opcode & IOCTL_IN_PARAM) || (cmd->opcode & IOCTL_OUT_PARAM))
+            luxLogf(KPRINT_LEVEL_WARNING, "unimplemented slave pty %d ioctl() opcode 0x%X with input param %d\n", cmd->id, cmd->opcode, cmd->parameter);
+        else
+            luxLogf(KPRINT_LEVEL_WARNING, "unimplemented slave pty %d ioctl() opcode 0x%X\n", cmd->id, cmd->opcode);
+
+        cmd->header.header.status = -ENOTTY;
+    }
+
     luxSendDependency(cmd);
 }