(__pathconf): For _PC_ASYNC_IO test whether named file is a regular file or a block...

diff --git a/sysdeps/posix/pathconf.c b/sysdeps/posix/pathconf.c
index 4ce5c0d..63a3a9c 100644 (file)
--- a/sysdeps/posix/pathconf.c
+++ b/sysdeps/posix/pathconf.c
@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <limits.h>
 #include <fcntl.h>
+#include <sys/stat.h>
 #include <sys/statfs.h>
 #include <sys/statvfs.h>
 
@@ -138,7 +139,16 @@ __pathconf (const char *path, int name)
 
     case _PC_ASYNC_IO:
 #ifdef _POSIX_ASYNC_IO
-      return _POSIX_ASYNC_IO;
+      {
+       /* AIO is only allowed on regular files and block devices.  */
+       struct stat64 st;
+
+       if (__xstat64 (_STAT_VER, path, &st) < 0
+           || (! S_ISREG (st.st_mode) && ! S_ISBLK (st.st_mode)))
+         return -1;
+       else
+         return 1;
+      }
 #else
       return -1;
 #endif