Add case-sensitivity.

	Unconditionally handle mount points case-sensitive.
	Unconditionally handle virtual paths case-sensitive.
	Unconditionally handle registry paths case-insensitive.
	Otherwise, accommodate case-sensitivity of given path throughout.
	* cygheap.cc (cygheap_root::set): Get additional caseinsensitive
	parameter and store it.
	* cygheap.h (struct cygheap_root_mount_info): Add member
	caseinsensitive.
	* dlfcn.cc (get_full_path_of_dll): Drop PC_NOFULL parameter from call
	to path_conv::check.
	* environ.cc (pcheck_case): Remove.
	(check_case_init): Remove.
	(known): Drop "check_case" option.
	* exceptions.cc (open_stackdumpfile): Add comment.
	* fhandler.cc (fhandler_base::get_default_fmode): Call pathmatch
	instead of strcasematch.
	* fhandler_disk_file.cc: Accommodate case-sensitivity of given path
	throughout.
	(__DIR_mounts::check_mount): Unconditionally check virtual paths
	case-sensitive.
	(fhandler_disk_file::link): Drop case clash handling.
	(fhandler_disk_file::open): Ditto.
	(fhandler_disk_file::readdir_helper): Drop managed mount code.
	* mount.cc: Remove managed mount code and datastructures.
	(struct opt): Remove "managed" option.  Add "posix=0" and "posix=1"
	options.
	(fillout_mntent): Remove "managed" output.  Add "posix" output.
	* path.cc (struct symlink_info): Remove case_clash member and
	case_check method.
	(pcheck_case): Remove.
	(path_prefix_p): Take additional bool parameter "caseinsensitive".
	(pathnmatch): Ditto.
	(pathmatch): Ditto.
	(mkrelpath): Ditto.
	(fs_info::update): Set caseinsensitive flag according to file system
	name and FILE_CASE_SENSITIVE_SEARCH flag.  Add comment.
	(tfx_chars_managed): Remove.
	(transform_chars): Drop "managed" parameter.  Always use tfx_chars.
	(get_nt_native_path): Drop "managed" parameter.  Make sure drive letters
	are always upper case.
	(getfileattr): Change second parameter to denote caseinsensitivity.
	(path_conv::check): Initialize caseinsensitive to OBJ_CASE_INSENSITIVE.
	Set caseinsensitive according to global obcaseinsensitive flag, file
	system case sensitivity and MOUNT_NOPOSIX mount flag.
	Drop case_clash and all the related code.
	(symlink_worker): Drop case clash handling.
	(symlink_info::set): Drop setting case_clash.
	(symlink_info::case_check): Remove.
	(cwdstuff::set): Add comment.
	(etc::init): Take path_conv instead of PUNICODE_STRING as parameter to
	allow case sensitivity.
	* path.h (enum pathconv_arg): Drop PC_SYM_IGNORE.
	(enum case_checking): Remove.
	(enum path_types): Drop PATH_ENC, add PATH_NOPOSIX flag.
	(struct fs_info): Add caseinsensitive flag and accessor methods.
	(class path_conv): Add caseinsensitive member and define
	objcaseinsensitive method.  Drop case_clash member and isencoded method.
	(pathmatch): Change prototype according to above change.
	(pathnmatch): Ditto.
	(path_prefix_p): Ditto.
	(get_nt_native_path): Ditto.
	(class etc): Ditto.
	(fnunmunge): Remove prototype.
	* shared.cc (shared_info::init_obcaseinsensitive): Initialize
	obcaseinsensitive flag from obcaseinsensitive registry value.
	(shared_info::initialize): Call init_obcaseinsensitive here by the
	first process creating the shared memory.
	* shared_info.h (mount_item::fnmunge): Remove.
	(shared_info::obcaseinsensitive): Rename from obcaseinsensitivity.
	(shared_info::init_obcaseinsensitive): Declare.
	* syscalls.cc (try_to_bin): Add comment.
	* include/sys/mount.h (MOUNT_ENC): Remove flag.
	(MOUNT_NOPOSIX): Add flag.

1 files changed, 11 insertions, 18 deletions

diff --git a/winsup/cygwin/path.h b/winsup/cygwin/path.h
index 2db254e58..a567e1e07 100644
--- a/winsup/cygwin/path.h
+++ b/winsup/cygwin/path.h
@@ -49,7 +49,6 @@ enum pathconv_arg
 {
   PC_SYM_FOLLOW		= 0x0001,
   PC_SYM_NOFOLLOW	= 0x0002,
-  PC_SYM_IGNORE		= 0x0004,
   PC_SYM_CONTENTS	= 0x0008,
   PC_NOFULL		= 0x0010,
   PC_NULLEMPTY		= 0x0020,
@@ -59,13 +58,6 @@ enum pathconv_arg
   PC_NO_ACCESS_CHECK	= 0x00800000
 };
 
-enum case_checking
-{
-  PCHECK_RELAXED	= 0,
-  PCHECK_ADJUST		= 1,
-  PCHECK_STRICT		= 2
-};
-
 #define PC_NONULLEMPTY -1
 
 #include "sys/mount.h"
@@ -78,9 +70,9 @@ enum path_types
   PATH_EXEC		= MOUNT_EXEC,
   PATH_NOTEXEC		= MOUNT_NOTEXEC,
   PATH_CYGWIN_EXEC	= MOUNT_CYGWIN_EXEC,
-  PATH_ENC		= MOUNT_ENC,
   PATH_RO		= MOUNT_RO,
   PATH_NOACL		= MOUNT_NOACL,
+  PATH_NOPOSIX		= MOUNT_NOPOSIX,
   PATH_ALL_EXEC		= (PATH_CYGWIN_EXEC | PATH_EXEC),
   PATH_NO_ACCESS_CHECK	= PC_NO_ACCESS_CHECK,
   PATH_LNK		= 0x01000000,
@@ -103,6 +95,7 @@ struct fs_info
     unsigned has_buggy_open  : 1;
     unsigned has_acls	     : 1;
     unsigned hasgood_inode   : 1;
+    unsigned caseinsensitive : 1;
     unsigned is_fat	     : 1;
     unsigned is_ntfs	     : 1;
     unsigned is_samba	     : 1;
@@ -122,6 +115,7 @@ struct fs_info
   IMPLEMENT_STATUS_FLAG (bool, has_buggy_open)
   IMPLEMENT_STATUS_FLAG (bool, has_acls)
   IMPLEMENT_STATUS_FLAG (bool, hasgood_inode)
+  IMPLEMENT_STATUS_FLAG (bool, caseinsensitive)
   IMPLEMENT_STATUS_FLAG (bool, is_fat)
   IMPLEMENT_STATUS_FLAG (bool, is_ntfs)
   IMPLEMENT_STATUS_FLAG (bool, is_samba)
@@ -136,6 +130,7 @@ struct fs_info
 class path_conv
 {
   DWORD fileattr;
+  ULONG caseinsensitive;
   fs_info fs;
   PWCHAR wide_path;
   UNICODE_STRING uni_path;
@@ -146,15 +141,14 @@ class path_conv
   char *known_suffix;
   int error;
   device dev;
-  bool case_clash;
 
   bool isremote () const {return fs.is_remote_drive ();}
+  ULONG objcaseinsensitive () const {return caseinsensitive;}
   bool has_acls () const {return !(path_flags & PATH_NOACL) && fs.has_acls (); }
   bool hasgood_inode () const {return fs.hasgood_inode (); }
   bool isgood_inode (__ino64_t ino) const;
   int has_symlinks () const {return path_flags & PATH_HAS_SYMLINKS;}
   int has_buggy_open () const {return fs.has_buggy_open ();}
-  bool isencoded () const {return path_flags & PATH_ENC;}
   int binmode () const
   {
     if (path_flags & PATH_BINARY)
@@ -333,18 +327,17 @@ has_exec_chars (const char *buf, int len)
 	  (buf[0] == 'M' && buf[1] == 'Z'));
 }
 
-int pathmatch (const char *path1, const char *path2) __attribute__ ((regparm (2)));
-int pathnmatch (const char *path1, const char *path2, int len) __attribute__ ((regparm (2)));
+int pathmatch (const char *path1, const char *path2, bool caseinsensitive) __attribute__ ((regparm (3)));
+int pathnmatch (const char *path1, const char *path2, int len, bool caseinsensitive) __attribute__ ((regparm (3)));
 bool has_dot_last_component (const char *dir, bool test_dot_dot) __attribute__ ((regparm (2)));
 
-bool fnunmunge (char *, const char *) __attribute__ ((regparm (2)));
-
-int path_prefix_p (const char *path1, const char *path2, int len1) __attribute__ ((regparm (3)));
+int path_prefix_p (const char *path1, const char *path2, int len1,
+		   bool caseinsensitive) __attribute__ ((regparm (3)));
 
 bool is_floppy (const char *);
 int normalize_win32_path (const char *, char *, char *&);
 int normalize_posix_path (const char *, char *, char *&);
-PUNICODE_STRING get_nt_native_path (const char *, UNICODE_STRING&, bool);
+PUNICODE_STRING get_nt_native_path (const char *, UNICODE_STRING&);
 
 /* FIXME: Move to own include file eventually */
 
@@ -358,7 +351,7 @@ class etc
   static OBJECT_ATTRIBUTES fn[MAX_ETC_FILES + 1];
   static LARGE_INTEGER last_modified[MAX_ETC_FILES + 1];
   static bool dir_changed (int);
-  static int init (int, PUNICODE_STRING);
+  static int init (int, path_conv &pc);
   static bool file_changed (int);
   static bool test_file_change (int);
   friend class pwdgrp;