/* path.h: path data structures Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 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 #define isproc_dev(devn) \ (devn == FH_PROC || devn == FH_REGISTRY || devn == FH_PROCESS || \ devn == FH_PROCNET) #define isvirtual_dev(devn) \ (isproc_dev (devn) || devn == FH_CYGDRIVE || devn == FH_NETDRIVE) 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_IGNORE = 0x0004, PC_SYM_CONTENTS = 0x0008, PC_NOFULL = 0x0010, PC_NULLEMPTY = 0x0020, PC_CHECK_EA = 0x0040, PC_POSIX = 0x0080, PC_NOWARN = 0x0100, 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_REP = 0x04000000, PATH_HAS_SYMLINKS = 0x10000000, PATH_SOCKET = 0x40000000 }; class symlink_info; struct fs_info { private: struct status_flags { DWORD flags; /* Volume flags */ DWORD samba_version; /* Samba version if available */ unsigned is_remote_drive : 1; unsigned has_buggy_open : 1; unsigned has_acls : 1; unsigned hasgood_inode : 1; unsigned is_fat : 1; unsigned is_ntfs : 1; unsigned is_samba : 1; unsigned is_nfs : 1; unsigned is_netapp : 1; unsigned is_cdrom : 1; } status; public: void clear () { memset (&status, 0 , sizeof status); } fs_info () { clear (); } IMPLEMENT_STATUS_FLAG (DWORD, flags) IMPLEMENT_STATUS_FLAG (DWORD, samba_version) IMPLEMENT_STATUS_FLAG (bool, is_remote_drive) IMPLEMENT_STATUS_FLAG (bool, has_buggy_open) IMPLEMENT_STATUS_FLAG (bool, has_acls) IMPLEMENT_STATUS_FLAG (bool, hasgood_inode) IMPLEMENT_STATUS_FLAG (bool, is_fat) IMPLEMENT_STATUS_FLAG (bool, is_ntfs) IMPLEMENT_STATUS_FLAG (bool, is_samba) IMPLEMENT_STATUS_FLAG (bool, is_nfs) IMPLEMENT_STATUS_FLAG (bool, is_netapp) IMPLEMENT_STATUS_FLAG (bool, is_cdrom) bool update (PUNICODE_STRING, bool) __attribute__ ((regparm (3))); }; class path_conv { DWORD fileattr; fs_info fs; PWCHAR wide_path; UNICODE_STRING uni_path; void add_ext_from_sym (symlink_info&); public: unsigned path_flags; char *known_suffix; int error; device dev; bool case_clash; bool isremote () const {return fs.is_remote_drive ();} bool has_acls () const {return 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) 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.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 iscygdrive () const {return dev.devn == 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.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 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_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 UNICODE_STRING *src, unsigned opt = PC_SYM_FOLLOW, const suffix_info *suffixes = NULL) { check (src, opt | PC_NULLEMPTY, 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), wide_path (NULL), path_flags (0), known_suffix (NULL), error (0), normalized_path (NULL) {path[0] = '\0';} ~path_conv (); inline char *get_win32 () { return path; } PUNICODE_STRING get_nt_native_path (); POBJECT_ATTRIBUTES get_object_attr (OBJECT_ATTRIBUTES &attr, SECURITY_ATTRIBUTES &sa); 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; } path_conv &operator =(path_conv &pc) { memcpy (this, &pc, pc.size ()); set_normalized_path (pc.normalized_path, false); wide_path = NULL; return *this; } DWORD get_devn () const {return dev.devn;} short get_unitn () const {return dev.minor;} DWORD file_attributes () const {return fileattr;} void file_attributes (DWORD new_attr) {fileattr = new_attr;} DWORD fs_flags () {return fs.flags ();} 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 ();} void set_path (const char *p) {strcpy (path, p);} void fillin (HANDLE h); inline size_t size () { return (sizeof (*this) - sizeof (path)) + strlen (path) + 1 + normalized_path_size; } bool is_binary (); 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[NT_MAX_PATH]; }; /* Symlink marker */ #define SYMLINK_COOKIE "!" /* Socket marker */ #define SOCKET_COOKIE "!" 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 */ 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) __attribute__ ((regparm (2))); int pathnmatch (const char *path1, const char *path2, int len) __attribute__ ((regparm (2))); 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))); 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 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, PUNICODE_STRING); static bool file_changed (int); static bool test_file_change (int); friend class pwdgrp; };