allow renaming bootstrap, and change the name of bootstrap.conf accordingly

[gnulib.git] / lib / open.c

diff --git a/lib/open.c b/lib/open.c
index e9324af..9a35f5b 100644 (file)
--- a/lib/open.c
+++ b/lib/open.c
@@ -18,6 +18,18 @@
 
 #include <config.h>
 
+/* Get the original definition of open.  It might be defined as a macro.  */
+#define __need_system_fcntl_h
+#include <fcntl.h>
+#undef __need_system_fcntl_h
+#include <sys/types.h>
+
+static inline int
+orig_open (const char *filename, int flags, mode_t mode)
+{
+  return open (filename, flags, mode);
+}
+
 /* Specification.  */
 #include <fcntl.h>
 
@@ -32,9 +44,9 @@
 
 int
 open (const char *filename, int flags, ...)
-# undef open
 {
   mode_t mode;
+  int fd;
 
   mode = 0;
   if (flags & O_CREAT)
@@ -52,13 +64,18 @@ open (const char *filename, int flags, ...)
       va_end (arg);
     }
 
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+  if (strcmp (filename, "/dev/null") == 0)
+    filename = "NUL";
+# endif
+
 # if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and one of O_CREAT, O_WRONLY, O_RDWR
      is specified, then fail.
      Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
      says that
        "A pathname that contains at least one non-slash character and that
-        ends withone or more trailing slashes shall be resolved as if a
+        ends with one or more trailing slashes shall be resolved as if a
         single dot character ( '.' ) were appended to the pathname."
      and
        "The special filename dot shall refer to the directory specified by
@@ -85,11 +102,38 @@ open (const char *filename, int flags, ...)
     }
 # endif
 
-# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-  if (strcmp (filename, "/dev/null") == 0)
-    filename = "NUL";
+  fd = orig_open (filename, flags, mode);
+
+# if OPEN_TRAILING_SLASH_BUG
+  /* If the filename ends in a slash and fd does not refer to a directory,
+     then fail.
+     Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
+     says that
+       "A pathname that contains at least one non-slash character and that
+        ends with one or more trailing slashes shall be resolved as if a
+        single dot character ( '.' ) were appended to the pathname."
+     and
+       "The special filename dot shall refer to the directory specified by
+        its predecessor."
+     If the named file without the slash is not a directory, open() must fail
+     with ENOTDIR.  */
+  if (fd >= 0)
+    {
+      size_t len = strlen (filename);
+      if (len > 0 && filename[len - 1] == '/')
+       {
+         struct stat statbuf;
+
+         if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
+           {
+             close (fd);
+             errno = ENOTDIR;
+             return -1;
+           }
+       }
+    }
 # endif
 
-  return open (filename, flags, mode);
+  return fd;
 }
 #endif