X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Funix.lisp;h=64db7ed483ee66aef185abe89e3b48cb4a42ccaf;hb=6caf3ed5713773cb423f46bf40a29f2438c97c78;hp=d5ac4836b72c5d6c813d181c199d687ee7fc4913;hpb=bb3994fcc9a556d1a26d35f6ff9386d01030821d;p=sbcl.git

diff --git a/src/code/unix.lisp b/src/code/unix.lisp
index d5ac483..64db7ed 100644
--- a/src/code/unix.lisp
+++ b/src/code/unix.lisp
@@ -276,6 +276,7 @@ corresponds to NAME, or NIL if there is none."
   (void-syscall ("access" c-string int) path mode))
 
 ;;; values for the second argument to UNIX-LSEEK
+;;; Note that nowadays these are called SEEK_SET, SEEK_CUR, and SEEK_END
 (defconstant l_set 0) ; to set the file pointer
 (defconstant l_incr 1) ; to increment the file pointer
 (defconstant l_xtnd 2) ; to extend the file size
@@ -880,6 +881,31 @@ corresponds to NAME, or NIL if there is none."
     (syscall ("fstat_wrapper" int (* (struct wrapped_stat)))
              (%extract-stat-results (addr buf))
              fd (addr buf))))
+
+#!-win32
+(defun fd-type (fd)
+  (declare (type unix-fd fd))
+  (let ((fmt (logand
+              sb!unix:s-ifmt
+              (or (with-alien ((buf (struct wrapped_stat)))
+                    (syscall ("fstat_wrapper" int (* (struct wrapped_stat)))
+                             (slot buf 'st-mode)
+                             fd (addr buf)))
+                  0))))
+    (cond ((logtest sb!unix:s-ififo fmt)
+           :fifo)
+          ((logtest sb!unix:s-ifchr fmt)
+           :character)
+          ((logtest sb!unix:s-ifdir fmt)
+           :directory)
+          ((logtest sb!unix:s-ifblk fmt)
+           :block)
+          ((logtest sb!unix:s-ifreg fmt)
+           :regular)
+          ((logtest sb!unix:s-ifsock fmt)
+           :socket)
+          (t
+           :unknown))))
 
 ;;;; time.h