From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Wed, 5 Dec 2018 18:50:21 +0000 (+0000)
Subject: Allow unknown root directory.
X-Git-Tag: archive/raspbian/2.28-2+rpi1^2~81
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=eb4fda94207f0496f2c5aaa8138c39b48ed86024;p=glibc.git

Allow unknown root directory.

To be efficient, the remap translator simply returns ports from the underlying
filesystem, and thus the root directory found through browsing '..' is the
underlying root, not the remap root. This should not be a reason for getcwd to
fail.

* sysdeps/mach/hurd/getcwd.c (_hurd_canonicalize_directory_name_internal): Do
not remove the heading slash if we got an unknown root directory.
(__getcwd): Do not fail with EGRATUITOUS if we got an unknown root directory.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>


Gbp-Pq: Topic hurd-i386
Gbp-Pq: Name tg-remap_getcwd.diff
---

diff --git a/sysdeps/mach/hurd/getcwd.c b/sysdeps/mach/hurd/getcwd.c
index c30b7c507..34225a5d5 100644
--- a/sysdeps/mach/hurd/getcwd.c
+++ b/sysdeps/mach/hurd/getcwd.c
@@ -266,11 +266,6 @@ __hurd_canonicalize_directory_name_internal (file_t thisdir,
        So the root is our current directory.  */
     *--file_namep = '/';
 
-  if (thisid != rootid)
-    /* We did not get to our root directory. The returned name should
-       not begin with a slash.  */
-    ++file_namep;
-
   memmove (file_name, file_namep, file_name + size - file_namep);
   cleanup ();
   return file_name;
@@ -309,13 +304,6 @@ __getcwd (char *buf, size_t size)
     __USEPORT (CWDIR,
 	       __hurd_canonicalize_directory_name_internal (port,
 							    buf, size));
-  if (cwd && cwd[0] != '/')
-    {
-      /* `cwd' is an unknown root directory.  */
-      if (buf == NULL)
-	  free (cwd);
-      return __hurd_fail (EGRATUITOUS), NULL;
-    }
   return cwd;
 }
 weak_alias (__getcwd, getcwd)