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hurd getcwd: Allow unknown root directory

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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.
This commit is contained in:
Samuel Thibault 2019-08-30 01:08:09 +02:00
parent f0e84494b1
commit 90f0f97ccb
2 changed files with 9 additions and 13 deletions
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10
ChangeLog
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@ -1,4 +1,12 @@
2019-08-30 Richard Braun <rbraun@sceen.net>
2019-08-30 Samuel Thibault <samuel.thibault@ens-lyon.org>
* 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.
2019-08-30 Richard Braun <rbraun@sceen.net>
* hurd/hurdselect.c (_hurd_select): Always call __io_select with no
timeout.

12
sysdeps/mach/hurd/getcwd.c
View File

@ -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)