/* path.h: path data structures Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006 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 #include #include 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) {} }; 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, PC_CHECK_EA = 0x0040, PC_POSIX = 0x0080, 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" 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_ENC = MOUNT_ENC, PATH_RO = MOUNT_RO, PATH_ALL_EXEC = (PATH_CYGWIN_EXEC | PATH_EXEC), PATH_NO_ACCESS_CHECK = PC_NO_ACCESS_CHECK, PATH_LNK = 0x01000000, PATH_TEXT = 0x02000000, PATH_HAS_SYMLINKS = 0x10000000, PATH_SOCKET = 0x40000000 }; class symlink_info; struct fs_info { private: __ino64_t name_hash; struct status_flags { DWORD flags; /* Volume flags */ DWORD serial; /* Volume serial number */ unsigned is_remote_drive : 1; unsigned has_buggy_open : 1; unsigned has_ea : 1; unsigned has_acls : 1; unsigned is_fat : 1; unsigned drive_type : 3; } status; public: void clear () { name_hash = 0; flags () = serial () = 0; is_remote_drive (false); has_buggy_open (false); has_ea (false); has_acls (false); is_fat (false); drive_type (false); } inline DWORD& flags () {return status.flags;}; inline DWORD& serial () {return status.serial;}; IMPLEMENT_STATUS_FLAG (bool, is_remote_drive) IMPLEMENT_STATUS_FLAG (bool, has_buggy_open) IMPLEMENT_STATUS_FLAG (bool, is_fat) IMPLEMENT_STATUS_FLAG (bool, has_ea) IMPLEMENT_STATUS_FLAG (bool, has_acls) IMPLEMENT_STATUS_FLAG (DWORD, drive_type) bool update (const char *); }; class path_conv { DWORD fileattr; fs_info fs; void add_ext_from_sym (symlink_info&); public: unsigned path_flags; char *known_suffix; int error; device dev; bool case_clash; bool isremote () {return fs.is_remote_drive ();} int has_acls () const {return fs.has_acls (); } int has_symlinks () const {return path_flags & PATH_HAS_SYMLINKS;} bool hasgood_inode (); /* Implemented in fhandler_disk_file.cc */ int has_buggy_open () const {return fs.has_buggy_open ();} bool isencoded () {return path_flags & PATH_ENC;} 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 isdevice () const {return dev.devn && dev.devn != FH_FS && dev.devn != FH_FIFO;} int isfifo () const {return dev == FH_FIFO;} int isspecial () const {return dev.devn && dev.devn != FH_FS;} 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.devn == FH_UNIX;} int iscygexec () const {return path_flags & PATH_CYGWIN_EXEC;} 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_binary () {path_flags |= PATH_BINARY;} 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 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), path_flags (0), known_suffix (NULL), error (0), dev (in_dev) { strcpy (path, in_dev.native); } path_conv (int, const char *src, unsigned opt = PC_SYM_FOLLOW, const suffix_info *suffixes = NULL) { check (src, opt, suffixes); } path_conv (const char *src, unsigned opt = PC_SYM_FOLLOW, const suffix_info *suffixes = NULL) { check (src, opt | PC_NULLEMPTY, suffixes); } path_conv (): fileattr (INVALID_FILE_ATTRIBUTES), path_flags (0), known_suffix (NULL), error (0), normalized_path (NULL) {path[0] = '\0';} ~path_conv (); void set_name (const char *win32, const char *posix); inline char *get_win32 () { return path; } PUNICODE_STRING get_nt_native_path (UNICODE_STRING &upath); operator char *() {return path;} operator const char *() {return path;} operator DWORD &() {return fileattr;} operator int () {return fileattr; } char operator [](int i) const {return path[i];} DWORD get_devn () {return dev.devn;} short get_unitn () {return dev.minor;} DWORD file_attributes () {return fileattr;} void file_attributes (DWORD new_attr) {fileattr = new_attr;} DWORD drive_type () {return fs.drive_type ();} DWORD fs_flags () {return fs.flags ();} bool fs_has_ea () {return fs.has_ea ();} bool fs_is_fat () {return fs.is_fat ();} void set_path (const char *p) {strcpy (path, p);} DWORD volser () { return fs.serial (); } void fillin (HANDLE h); inline size_t size () { return (sizeof (*this) - sizeof (path)) + strlen (path) + 1 + normalized_path_size; } unsigned __stdcall ndisk_links (DWORD); char *normalized_path; size_t normalized_path_size; void set_normalized_path (const char *, bool) __attribute__ ((regparm (3))); DWORD get_symlink_length () { return symlink_length; }; private: DWORD symlink_length; char path[CYG_MAX_PATH]; }; /* Symlink marker */ #define SYMLINK_COOKIE "!" #define SYMLINK_EA_NAME ".CYGSYMLINK" /* Socket marker */ #define SOCKET_COOKIE "!" /* The sizeof header written to a shortcut by Cygwin or U/WIN. */ #define SHORTCUT_HDR_SIZE 76 /* Maximum depth of symlinks (after which ELOOP is issued). */ #define MAX_LINK_DEPTH 10 int __stdcall slash_unc_prefix_p (const char *path) __attribute__ ((regparm(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 */ }; 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] == ':') 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) __attribute__ ((regparm (2))); int pathnmatch (const char *path1, const char *path2, int len) __attribute__ ((regparm (2))); bool has_dot_last_component (const char *dir) __attribute__ ((regparm (1))); bool fnunmunge (char *, const char *) __attribute__ ((regparm (2))); int path_prefix_p (const char *path1, const char *path2, int len1) __attribute__ ((regparm (3))); bool is_floppy (const char *); /* FIXME: Move to own include file eventually */ #define MAX_ETC_FILES 2 class etc { friend class dtable; static int curr_ix; static bool change_possible[MAX_ETC_FILES + 1]; static const char *fn[MAX_ETC_FILES + 1]; static FILETIME last_modified[MAX_ETC_FILES + 1]; static bool dir_changed (int); static int init (int, const char *); static bool file_changed (int); static bool test_file_change (int); friend class pwdgrp; };