Improve debugging code. Set login to override env variables.

libc/src/debug.c

@@ -18,17 +18,13 @@
 
 void dbg_putchar(char c)
 {
-#if (defined(DEBUG_STDIO) || defined(DEBUG_LOG))
     outportb(SERIAL_COM1, (uint8_t)c);
-#endif
 }
 
 void dbg_puts(const char *s)
 {
-#if (defined(DEBUG_STDIO) || defined(DEBUG_LOG))
     while ((*s) != 0)
         dbg_putchar(*s++);
-#endif
 }
 
 static inline void __debug_print_header(const char *file, const char *fun, int line)

libc/src/pwd.c

@@ -16,7 +16,7 @@
 static inline void __parse_line(passwd_t *pwd, char *buf)
 {
     assert(pwd && "Received null pwd!");
-    char *token;
+    char *token, *ch;
     // Parse the username.
     if ((token = strtok(buf, ":")) != NULL)
         pwd->pw_name = token;
@@ -36,8 +36,15 @@ static inline void __parse_line(passwd_t *pwd, char *buf)
     if ((token = strtok(NULL, ":")) != NULL)
         pwd->pw_dir = token;
     // Parse the shell.
-    if ((token = strtok(NULL, ":")) != NULL)
+    if ((token = strtok(NULL, ":")) != NULL) {
         pwd->pw_shell = token;
+        // Find carriege return.
+        if ((ch = strchr(pwd->pw_shell, '\r')))
+            *ch = 0;
+        // Find newline.
+        if ((ch = strchr(pwd->pw_shell, '\n')))
+            *ch = 0;
+    }
 }
 
 ssize_t __readline(int fd, char *buffer, size_t buflen)