420 lines
13 KiB
C++
420 lines
13 KiB
C++
/* path.h: path data structures
|
|
|
|
Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005,
|
|
2006, 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
#include "devices.h"
|
|
#include "mount.h"
|
|
#include "cygheap_malloc.h"
|
|
#include "nfs.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <fcntl.h>
|
|
|
|
inline bool
|
|
has_attribute (DWORD attributes, DWORD attribs_to_test)
|
|
{
|
|
return attributes != INVALID_FILE_ATTRIBUTES
|
|
&& (attributes & attribs_to_test);
|
|
}
|
|
|
|
enum executable_states
|
|
{
|
|
is_executable,
|
|
dont_care_if_executable,
|
|
not_executable = dont_care_if_executable,
|
|
dont_know_if_executable
|
|
};
|
|
|
|
struct suffix_info
|
|
{
|
|
const char *name;
|
|
int addon;
|
|
suffix_info (const char *s, int addit = 0): name (s), addon (addit) {}
|
|
};
|
|
|
|
extern suffix_info stat_suffixes[];
|
|
|
|
enum pathconv_arg
|
|
{
|
|
PC_SYM_FOLLOW = 0x0001,
|
|
PC_SYM_NOFOLLOW = 0x0002,
|
|
PC_SYM_NOFOLLOW_REP = 0x0004,
|
|
PC_SYM_CONTENTS = 0x0008,
|
|
PC_NOFULL = 0x0010,
|
|
PC_NULLEMPTY = 0x0020,
|
|
PC_POSIX = 0x0080,
|
|
PC_NOWARN = 0x0100,
|
|
PC_OPEN = 0x0200, /* use open semantics */
|
|
PC_CTTY = 0x0400, /* could later be used as ctty */
|
|
PC_KEEP_HANDLE = 0x00400000,
|
|
PC_NO_ACCESS_CHECK = 0x00800000
|
|
};
|
|
|
|
#define PC_NONULLEMPTY -1
|
|
|
|
#include "sys/mount.h"
|
|
|
|
enum path_types
|
|
{
|
|
PATH_NOTHING = 0,
|
|
PATH_SYMLINK = MOUNT_SYMLINK,
|
|
PATH_BINARY = MOUNT_BINARY,
|
|
PATH_EXEC = MOUNT_EXEC,
|
|
PATH_NOTEXEC = MOUNT_NOTEXEC,
|
|
PATH_CYGWIN_EXEC = MOUNT_CYGWIN_EXEC,
|
|
PATH_RO = MOUNT_RO,
|
|
PATH_NOACL = MOUNT_NOACL,
|
|
PATH_NOPOSIX = MOUNT_NOPOSIX,
|
|
PATH_DOS = MOUNT_DOS,
|
|
PATH_IHASH = MOUNT_IHASH,
|
|
PATH_ALL_EXEC = (PATH_CYGWIN_EXEC | PATH_EXEC),
|
|
PATH_NO_ACCESS_CHECK = PC_NO_ACCESS_CHECK,
|
|
PATH_CTTY = 0x00400000, /* could later be used as ctty */
|
|
PATH_OPEN = 0x00800000, /* use open semantics */
|
|
PATH_LNK = 0x01000000,
|
|
PATH_TEXT = 0x02000000,
|
|
PATH_REP = 0x04000000,
|
|
PATH_HAS_SYMLINKS = 0x10000000,
|
|
PATH_SOCKET = 0x40000000
|
|
};
|
|
|
|
class symlink_info;
|
|
struct _FILE_NETWORK_OPEN_INFORMATION;
|
|
|
|
class path_conv_handle
|
|
{
|
|
HANDLE hdl;
|
|
union {
|
|
/* Identical to FILE_NETWORK_OPEN_INFORMATION. We don't want to pull in
|
|
ntdll.h here, though. */
|
|
struct {
|
|
LARGE_INTEGER CreationTime;
|
|
LARGE_INTEGER LastAccessTime;
|
|
LARGE_INTEGER LastWriteTime;
|
|
LARGE_INTEGER ChangeTime;
|
|
LARGE_INTEGER AllocationSize;
|
|
LARGE_INTEGER EndOfFile;
|
|
ULONG FileAttributes;
|
|
} _fnoi;
|
|
/* For NFS. */
|
|
fattr3 _fattr3;
|
|
} attribs;
|
|
public:
|
|
path_conv_handle () : hdl (NULL) {}
|
|
inline void set (HANDLE h) { hdl = h; }
|
|
inline void close ()
|
|
{
|
|
if (hdl)
|
|
CloseHandle (hdl);
|
|
set (NULL);
|
|
}
|
|
inline void dup (const path_conv_handle &pch)
|
|
{
|
|
if (!DuplicateHandle (GetCurrentProcess (), pch.handle (),
|
|
GetCurrentProcess (), &hdl,
|
|
0, TRUE, DUPLICATE_SAME_ACCESS))
|
|
hdl = NULL;
|
|
}
|
|
inline HANDLE handle () const { return hdl; }
|
|
inline struct _FILE_NETWORK_OPEN_INFORMATION *fnoi ()
|
|
{ return (struct _FILE_NETWORK_OPEN_INFORMATION *) &attribs._fnoi; }
|
|
inline struct fattr3 *nfsattr ()
|
|
{ return (struct fattr3 *) &attribs._fattr3; }
|
|
};
|
|
|
|
class path_conv
|
|
{
|
|
DWORD fileattr;
|
|
ULONG caseinsensitive;
|
|
fs_info fs;
|
|
PWCHAR wide_path;
|
|
UNICODE_STRING uni_path;
|
|
void add_ext_from_sym (symlink_info&);
|
|
DWORD symlink_length;
|
|
const char *path;
|
|
path_conv_handle conv_handle;
|
|
public:
|
|
unsigned path_flags;
|
|
const char *known_suffix;
|
|
const char *normalized_path;
|
|
int error;
|
|
device dev;
|
|
|
|
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 !(path_flags & PATH_IHASH); }
|
|
bool isgood_inode (__ino64_t ino) const;
|
|
int has_symlinks () const {return path_flags & PATH_HAS_SYMLINKS;}
|
|
int has_dos_filenames_only () const {return path_flags & PATH_DOS;}
|
|
int has_buggy_open () const {return fs.has_buggy_open ();}
|
|
int has_buggy_reopen () const {return fs.has_buggy_reopen ();}
|
|
int has_buggy_fileid_dirinfo () const {return fs.has_buggy_fileid_dirinfo ();}
|
|
int has_buggy_basic_info () const {return fs.has_buggy_basic_info ();}
|
|
int binmode () const
|
|
{
|
|
if (path_flags & PATH_BINARY)
|
|
return O_BINARY;
|
|
if (path_flags & PATH_TEXT)
|
|
return O_TEXT;
|
|
return 0;
|
|
}
|
|
int issymlink () const {return path_flags & PATH_SYMLINK;}
|
|
int is_lnk_symlink () const {return path_flags & PATH_LNK;}
|
|
int is_rep_symlink () const {return path_flags & PATH_REP;}
|
|
int isdevice () const {return dev.not_device (FH_FS) && dev.not_device (FH_FIFO);}
|
|
int isfifo () const {return dev.is_device (FH_FIFO);}
|
|
int isspecial () const {return dev.not_device (FH_FS);}
|
|
int iscygdrive () const {return dev.is_device (FH_CYGDRIVE);}
|
|
int is_auto_device () const {return isdevice () && !is_fs_special ();}
|
|
int is_fs_device () const {return isdevice () && is_fs_special ();}
|
|
int is_fs_special () const {return dev.is_fs_special ();}
|
|
int is_lnk_special () const {return is_fs_device () || isfifo () || is_lnk_symlink ();}
|
|
int issocket () const {return dev.is_device (FH_UNIX);}
|
|
int iscygexec () const {return path_flags & PATH_CYGWIN_EXEC;}
|
|
int isopen () const {return path_flags & PATH_OPEN;}
|
|
int isctty_capable () const {return path_flags & PATH_CTTY;}
|
|
void set_cygexec (bool isset)
|
|
{
|
|
if (isset)
|
|
path_flags |= PATH_CYGWIN_EXEC;
|
|
else
|
|
path_flags &= ~PATH_CYGWIN_EXEC;
|
|
}
|
|
bool isro () const {return !!(path_flags & PATH_RO);}
|
|
bool exists () const {return fileattr != INVALID_FILE_ATTRIBUTES;}
|
|
bool has_attribute (DWORD x) const {return exists () && (fileattr & x);}
|
|
int isdir () const {return has_attribute (FILE_ATTRIBUTE_DIRECTORY);}
|
|
executable_states exec_state ()
|
|
{
|
|
extern int _check_for_executable;
|
|
if (path_flags & PATH_ALL_EXEC)
|
|
return is_executable;
|
|
if (path_flags & PATH_NOTEXEC)
|
|
return not_executable;
|
|
if (!_check_for_executable)
|
|
return dont_care_if_executable;
|
|
return dont_know_if_executable;
|
|
}
|
|
|
|
void set_symlink (DWORD n) {path_flags |= PATH_SYMLINK; symlink_length = n;}
|
|
void set_has_symlinks () {path_flags |= PATH_HAS_SYMLINKS;}
|
|
void set_exec (int x = 1) {path_flags |= x ? PATH_EXEC : PATH_NOTEXEC;}
|
|
|
|
void check (const UNICODE_STRING *upath, unsigned opt = PC_SYM_FOLLOW,
|
|
const suffix_info *suffixes = NULL) __attribute__ ((regparm(3)));
|
|
void check (const char *src, unsigned opt = PC_SYM_FOLLOW,
|
|
const suffix_info *suffixes = NULL) __attribute__ ((regparm(3)));
|
|
|
|
path_conv (const device& in_dev)
|
|
: fileattr (INVALID_FILE_ATTRIBUTES), wide_path (NULL), path (NULL),
|
|
path_flags (0), known_suffix (NULL), normalized_path (NULL), error (0),
|
|
dev (in_dev)
|
|
{
|
|
set_path (in_dev.native);
|
|
}
|
|
|
|
path_conv (int, const char *src, unsigned opt = PC_SYM_FOLLOW,
|
|
const suffix_info *suffixes = NULL)
|
|
: fileattr (INVALID_FILE_ATTRIBUTES), wide_path (NULL), path (NULL),
|
|
path_flags (0), known_suffix (NULL), normalized_path (NULL), error (0)
|
|
{
|
|
check (src, opt, suffixes);
|
|
}
|
|
|
|
path_conv (const UNICODE_STRING *src, unsigned opt = PC_SYM_FOLLOW,
|
|
const suffix_info *suffixes = NULL)
|
|
: fileattr (INVALID_FILE_ATTRIBUTES), wide_path (NULL), path (NULL),
|
|
path_flags (0), known_suffix (NULL), normalized_path (NULL), error (0)
|
|
{
|
|
check (src, opt | PC_NULLEMPTY, suffixes);
|
|
}
|
|
|
|
path_conv (const char *src, unsigned opt = PC_SYM_FOLLOW,
|
|
const suffix_info *suffixes = NULL)
|
|
: fileattr (INVALID_FILE_ATTRIBUTES), wide_path (NULL), path (NULL),
|
|
path_flags (0), known_suffix (NULL), normalized_path (NULL), error (0)
|
|
{
|
|
check (src, opt | PC_NULLEMPTY, suffixes);
|
|
}
|
|
|
|
path_conv ()
|
|
: fileattr (INVALID_FILE_ATTRIBUTES), wide_path (NULL), path (NULL),
|
|
path_flags (0), known_suffix (NULL), normalized_path (NULL), error (0)
|
|
{}
|
|
|
|
~path_conv ();
|
|
inline const char *get_win32 () { return path; }
|
|
PUNICODE_STRING get_nt_native_path ();
|
|
inline POBJECT_ATTRIBUTES get_object_attr (OBJECT_ATTRIBUTES &attr,
|
|
SECURITY_ATTRIBUTES &sa)
|
|
{
|
|
if (!get_nt_native_path ())
|
|
return NULL;
|
|
InitializeObjectAttributes (&attr, &uni_path,
|
|
objcaseinsensitive ()
|
|
| (sa.bInheritHandle ? OBJ_INHERIT : 0),
|
|
NULL, sa.lpSecurityDescriptor);
|
|
return &attr;
|
|
}
|
|
inline void init_reopen_attr (POBJECT_ATTRIBUTES attr, HANDLE h)
|
|
{
|
|
if (has_buggy_reopen ())
|
|
InitializeObjectAttributes (attr, get_nt_native_path (),
|
|
objcaseinsensitive (), NULL, NULL)
|
|
else
|
|
InitializeObjectAttributes (attr, &ro_u_empty, objcaseinsensitive (),
|
|
h, NULL);
|
|
}
|
|
inline size_t get_wide_win32_path_len ()
|
|
{
|
|
get_nt_native_path ();
|
|
return uni_path.Length / sizeof (WCHAR);
|
|
}
|
|
|
|
PWCHAR get_wide_win32_path (PWCHAR wc);
|
|
operator DWORD &() {return fileattr;}
|
|
operator int () {return fileattr; }
|
|
# define cfree_and_null(x) \
|
|
if (x) \
|
|
{ \
|
|
cfree ((void *) (x)); \
|
|
(x) = NULL; \
|
|
}
|
|
void free_strings ()
|
|
{
|
|
cfree_and_null (path);
|
|
cfree_and_null (normalized_path);
|
|
cfree_and_null (wide_path);
|
|
}
|
|
path_conv &operator =(const path_conv& pc)
|
|
{
|
|
free_strings ();
|
|
memcpy (this, &pc, sizeof pc);
|
|
path = cstrdup (pc.path);
|
|
conv_handle.dup (pc.conv_handle);
|
|
normalized_path = cstrdup(pc.normalized_path);
|
|
if (pc.wide_path)
|
|
{
|
|
wide_path = cwcsdup (uni_path.Buffer);
|
|
if (!wide_path)
|
|
api_fatal ("cwcsdup would have returned NULL");
|
|
uni_path.Buffer = wide_path;
|
|
}
|
|
return *this;
|
|
}
|
|
DWORD get_devn () {return (DWORD) dev;}
|
|
short get_unitn () const {return dev.get_minor ();}
|
|
DWORD file_attributes () const {return fileattr;}
|
|
void file_attributes (DWORD new_attr) {fileattr = new_attr;}
|
|
DWORD fs_flags () {return fs.flags ();}
|
|
DWORD fs_name_len () {return fs.name_len ();}
|
|
bool fs_is_fat () const {return fs.is_fat ();}
|
|
bool fs_is_ntfs () const {return fs.is_ntfs ();}
|
|
bool fs_is_samba () const {return fs.is_samba ();}
|
|
bool fs_is_nfs () const {return fs.is_nfs ();}
|
|
bool fs_is_netapp () const {return fs.is_netapp ();}
|
|
bool fs_is_cdrom () const {return fs.is_cdrom ();}
|
|
bool fs_is_mvfs () const {return fs.is_mvfs ();}
|
|
bool fs_is_cifs () const {return fs.is_cifs ();}
|
|
bool fs_is_nwfs () const {return fs.is_nwfs ();}
|
|
ULONG fs_serial_number () const {return fs.serial_number ();}
|
|
inline const char *set_path (const char *p)
|
|
{
|
|
if (path)
|
|
cfree (modifiable_path ());
|
|
char *new_path = (char *) cmalloc_abort (HEAP_STR, strlen (p) + 7);
|
|
strcpy (new_path, p);
|
|
return path = new_path;
|
|
}
|
|
bool is_binary ();
|
|
|
|
HANDLE handle () const { return conv_handle.handle (); }
|
|
struct _FILE_NETWORK_OPEN_INFORMATION *fnoi () { return conv_handle.fnoi (); }
|
|
struct fattr3 *nfsattr () { return conv_handle.nfsattr (); }
|
|
void reset_conv_handle () { conv_handle.set (NULL); }
|
|
void close_conv_handle () { conv_handle.close (); }
|
|
|
|
__ino64_t get_ino_by_handle (HANDLE h);
|
|
#if 0 /* obsolete, method still exists in fhandler_disk_file.cc */
|
|
unsigned __stdcall ndisk_links (DWORD);
|
|
#endif
|
|
void set_normalized_path (const char *) __attribute__ ((regparm (2)));
|
|
DWORD get_symlink_length () { return symlink_length; };
|
|
private:
|
|
char *modifiable_path () {return (char *) path;}
|
|
};
|
|
|
|
/* Symlink marker */
|
|
#define SYMLINK_COOKIE "!<symlink>"
|
|
|
|
/* Socket marker */
|
|
#define SOCKET_COOKIE "!<socket >"
|
|
|
|
/* Interix symlink marker */
|
|
#define INTERIX_SYMLINK_COOKIE "IntxLNK\1"
|
|
|
|
enum fe_types
|
|
{
|
|
FE_NADA = 0, /* Nothing special */
|
|
FE_NNF = 1, /* Return NULL if not found */
|
|
FE_NATIVE = 2, /* Return native path in path_conv struct */
|
|
FE_CWD = 4, /* Search CWD for program */
|
|
FE_DLL = 8 /* Search for DLLs, not executables. */
|
|
};
|
|
const char *__stdcall find_exec (const char *name, path_conv& buf,
|
|
const char *winenv = "PATH=",
|
|
unsigned opt = FE_NADA,
|
|
const char **known_suffix = NULL)
|
|
__attribute__ ((regparm(3)));
|
|
|
|
/* Common macros for checking for invalid path names */
|
|
#define isdrive(s) (isalpha (*(s)) && (s)[1] == ':')
|
|
#define iswdrive(s) (iswalpha (*(s)) && (s)[1] == L':')
|
|
|
|
static inline bool
|
|
has_exec_chars (const char *buf, int len)
|
|
{
|
|
return len >= 2 &&
|
|
((buf[0] == '#' && buf[1] == '!') ||
|
|
(buf[0] == ':' && buf[1] == '\n') ||
|
|
(buf[0] == 'M' && buf[1] == 'Z'));
|
|
}
|
|
|
|
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)));
|
|
|
|
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) __attribute__ ((regparm (3)));
|
|
|
|
/* FIXME: Move to own include file eventually */
|
|
|
|
#define MAX_ETC_FILES 2
|
|
class etc
|
|
{
|
|
friend class dtable;
|
|
static int curr_ix;
|
|
static HANDLE changed_h;
|
|
static bool change_possible[MAX_ETC_FILES + 1];
|
|
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, POBJECT_ATTRIBUTES);
|
|
static bool file_changed (int);
|
|
static bool test_file_change (int);
|
|
friend class pwdgrp;
|
|
};
|