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* mount.h (fs_info::inited): New inline method.

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* path.cc (path_conv::check): Clear filesystem info if following a
	symlink.  Use new fs_info::inited method to check if FS info is already
	available.
	(symlink_info::check): Drop fs_update_called.  Use fs_info::inited
	method instead.  Streamline test for leading space and trailing dot or
	space.  Add comments.
This commit is contained in:
Corinna Vinschen 2010-04-26 13:48:04 +00:00
parent 3134b8ad36
commit 002a34fa14
3 changed files with 40 additions and 24 deletions
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10
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,13 @@
2010-04-26 Corinna Vinschen <corinna@vinschen.de>
* mount.h (fs_info::inited): New inline method.
* path.cc (path_conv::check): Clear filesystem info if following a
symlink. Use new fs_info::inited method to check if FS info is already
available.
(symlink_info::check): Drop fs_update_called. Use fs_info::inited
method instead. Streamline test for leading space and trailing dot or
space. Add comments.
2010-04-23 Corinna Vinschen <corinna@vinschen.de>
* path.h (get_nt_native_path): Add third parameter to declaration and

1
winsup/cygwin/mount.h
View File

@ -97,6 +97,7 @@ class fs_info
const char *fsname () const { return fsn[0] ? fsn : "unknown"; }
bool update (PUNICODE_STRING, HANDLE) __attribute__ ((regparm (3)));
bool inited () const { return !!status.flags; }
};
/* Mount table entry */

53
winsup/cygwin/path.cc
View File

@ -894,8 +894,10 @@ is_virtual_symlink:
add_ext = true;
goto out;
}
else
break;
/* Following a symlink we can't trust the collected filesystem
information any longer. */
fs.clear ();
break;
}
else if (sym.error && sym.error != ENOENT)
{
@ -1026,8 +1028,8 @@ out:
}
}
/* FS has been checked already for existing files. */
if (exists () || fs.update (get_nt_native_path (), NULL))
/* If FS hasn't been checked already in symlink_info::check, do so now. */
if (fs.inited ()|| fs.update (get_nt_native_path (), NULL))
{
/* Incoming DOS paths are treated like DOS paths in native
Windows applications. No ACLs, just default settings. */
@ -2198,7 +2200,6 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt,
IO_STATUS_BLOCK io;
FILE_BASIC_INFORMATION fbi;
suffix_scan suffix;
bool fs_update_called = false;
const ULONG ci_flag = cygwin_shared->obcaseinsensitive
|| (pflags & PATH_NOPOSIX) ? OBJ_CASE_INSENSITIVE : 0;
@ -2282,7 +2283,7 @@ restart:
if (status == STATUS_OBJECT_NAME_NOT_FOUND)
{
if (ci_flag == 0 && wincap.has_broken_udf ()
&& (!fs_update_called || fs.is_udf ()))
&& (!fs.inited () || fs.is_udf ()))
{
/* On NT 5.x UDF is broken (at least) in terms of case
sensitivity. When trying to open a file case sensitive,
@ -2297,8 +2298,8 @@ restart:
attr.Attributes = 0;
if (NT_SUCCESS (status))
{
if (!fs_update_called)
fs_update_called = fs.update (&upath, h);
if (!fs.inited ())
fs.update (&upath, h);
if (!fs.is_udf ())
{
NtClose (h);
@ -2316,25 +2317,29 @@ restart:
already attach a suffix *and* the above special case for UDF
on XP didn't succeeed. */
if (!restarted && !*ext_here
&& (!fs_update_called || fs.has_dos_filenames_only ()))
&& (!fs.inited () || fs.has_dos_filenames_only ()))
{
/* Check for leading space or trailing dot or space in
/* Check for trailing dot or space or leading space in
last component. */
char *pend = ext_here;
if (pend[-1] == '.' || pend[-1] == ' ')
--pend;
char *pbeg = pend;
while (pbeg[-1] != '\\')
--pbeg;
/* If so, call fs.update to check if the filesystem is one of
the broken ones. */
if (*pbeg == ' ' || *pend != '\0')
char *p = ext_here - 1;
if (*p != '.' && *p != ' ')
{
if (!fs_update_called)
fs_update_called = fs.update (&upath, NULL);
while (*--p != '\\')
;
if (*++p != ' ')
p = NULL;
}
if (p)
{
/* If so, check if file resides on one of the known broken
FSes only supporting filenames following DOS rules. */
if (!fs.inited ())
fs.update (&upath, NULL);
if (fs.has_dos_filenames_only ())
{
/* If so, try again. */
/* If so, try again. Since we now know the FS, the
filenames will be tweaked to follow DOS rules via the
third parameter in the call to get_nt_native_path. */
restarted = true;
goto restart;
}
@ -2345,7 +2350,7 @@ restart:
if (NT_SUCCESS (status)
/* Check file system while we're having the file open anyway.
This speeds up path_conv noticably (~10%). */
&& (fs_update_called || (fs_update_called = fs.update (&upath, h)))
&& (fs.inited () || (fs.update (&upath, h)))
&& NT_SUCCESS (status = fs.has_buggy_basic_info ()
? NtQueryAttributesFile (&attr, &fbi)
: NtQueryInformationFile (h, &io, &fbi, sizeof fbi,
@ -2415,7 +2420,7 @@ restart:
TRUE, &basename, TRUE);
/* Take the opportunity to check file system while we're
having the handle to the parent dir. */
fs_update_called = fs.update (&upath, h);
fs.update (&upath, h);
NtClose (dir);
if (!NT_SUCCESS (status))
{