205 lines
6.1 KiB
C++
205 lines
6.1 KiB
C++
/* path.h: path data structures
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Copyright 1996, 1997, 1998, 2000, 2001, 2002 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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struct suffix_info
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{
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const char *name;
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int addon;
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suffix_info (const char *s, int addit = 0): name (s), addon (addit) {}
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};
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enum pathconv_arg
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{
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PC_SYM_FOLLOW = 0x0001,
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PC_SYM_NOFOLLOW = 0x0002,
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PC_SYM_IGNORE = 0x0004,
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PC_SYM_CONTENTS = 0x0008,
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PC_FULL = 0x0010,
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PC_NULLEMPTY = 0x0020,
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PC_CHECK_EA = 0x0040,
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PC_POSIX = 0x0080
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};
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enum case_checking
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{
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PCHECK_RELAXED = 0,
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PCHECK_ADJUST = 1,
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PCHECK_STRICT = 2
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};
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#define PC_NONULLEMPTY -1
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#include <sys/mount.h>
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enum path_types
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{
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PATH_NOTHING = 0,
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PATH_SYMLINK = MOUNT_SYMLINK,
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PATH_BINARY = MOUNT_BINARY,
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PATH_EXEC = MOUNT_EXEC,
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PATH_NOTEXEC = MOUNT_NOTEXEC,
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PATH_CYGWIN_EXEC = MOUNT_CYGWIN_EXEC,
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PATH_ALL_EXEC = (PATH_CYGWIN_EXEC | PATH_EXEC),
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PATH_TEXT = 0x02000000,
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PATH_ISDISK = 0x04000000,
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PATH_HAS_SYMLINKS = 0x10000000,
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PATH_HASBUGGYOPEN = 0x20000000,
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PATH_SOCKET = 0x40000000,
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PATH_HASACLS = 0x80000000
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};
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class symlink_info;
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struct fs_info
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{
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char name[MAX_PATH];
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char root_dir[MAX_PATH];
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DWORD flags;
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DWORD serial;
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DWORD sym_opt; /* additional options to pass to symlink_info resolver */
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DWORD is_remote_drive;
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DWORD drive_type;
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bool update (const char *);
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};
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class path_conv
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{
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char path[MAX_PATH];
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fs_info fs;
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void add_ext_from_sym (symlink_info&);
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public:
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unsigned path_flags;
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char *known_suffix;
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int error;
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DWORD devn;
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int unit;
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DWORD fileattr;
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BOOL case_clash;
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char *normalized_path;
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int isdisk () const { return path_flags & PATH_ISDISK;}
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int isremote () const {return fs.is_remote_drive;}
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int has_acls () const {return path_flags & PATH_HASACLS;}
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int has_symlinks () const {return path_flags & PATH_HAS_SYMLINKS;}
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int hasgood_inode () const {return path_flags & PATH_HASACLS;} // Not strictly correct
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int has_buggy_open () const {return path_flags & PATH_HASBUGGYOPEN;}
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int binmode () const
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{
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if (path_flags & PATH_BINARY)
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return O_BINARY;
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if (path_flags & PATH_TEXT)
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return O_TEXT;
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return 0;
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}
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int issymlink () const {return path_flags & PATH_SYMLINK;}
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int issocket () const {return path_flags & PATH_SOCKET;}
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int iscygexec () const {return path_flags & PATH_CYGWIN_EXEC;}
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bool exists () const {return fileattr != INVALID_FILE_ATTRIBUTES;}
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bool has_attribute (DWORD x) const {return exists () && (fileattr & x);}
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int isdir () const {return has_attribute (FILE_ATTRIBUTE_DIRECTORY);}
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executable_states exec_state ()
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{
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extern int _check_for_executable;
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if (path_flags & PATH_ALL_EXEC)
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return is_executable;
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if (path_flags & PATH_NOTEXEC)
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return not_executable;
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if (!_check_for_executable)
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return dont_care_if_executable;
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return dont_know_if_executable;
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}
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void set_binary () {path_flags |= PATH_BINARY;}
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void set_symlink () {path_flags |= PATH_SYMLINK;}
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void set_has_symlinks () {path_flags |= PATH_HAS_SYMLINKS;}
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void set_isdisk () {path_flags |= PATH_ISDISK; devn = FH_DISK;}
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void set_exec (int x = 1) {path_flags |= x ? PATH_EXEC : PATH_NOTEXEC;}
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void set_has_acls (int x = 1) {path_flags |= x ? PATH_HASACLS : PATH_NOTHING;}
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void set_has_buggy_open (int x = 1) {path_flags |= x ? PATH_HASBUGGYOPEN : PATH_NOTHING;}
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void check (const char *src, unsigned opt = PC_SYM_FOLLOW,
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const suffix_info *suffixes = NULL) __attribute__ ((regparm(3)));
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path_conv (int, const char *src, unsigned opt = PC_SYM_FOLLOW,
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const suffix_info *suffixes = NULL)
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{
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check (src, opt, suffixes);
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}
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path_conv (const char *src, unsigned opt = PC_SYM_FOLLOW,
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const suffix_info *suffixes = NULL)
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{
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check (src, opt | PC_NULLEMPTY, suffixes);
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}
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path_conv (): path_flags (0), known_suffix (NULL), error (0), devn (0),
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unit (0), fileattr (INVALID_FILE_ATTRIBUTES),
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normalized_path (NULL) {path[0] = '\0';}
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inline char *get_win32 () { return path; }
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operator char *() {return path;}
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operator const char *() {return path;}
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operator DWORD &() {return fileattr;}
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operator int &() {return (int) fileattr; }
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BOOL is_device () {return devn != FH_BAD && devn != FH_DISK;}
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DWORD get_devn () {return devn == FH_BAD ? (DWORD) FH_DISK : devn;}
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short get_unitn () {return devn == FH_BAD ? 0 : unit;}
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DWORD file_attributes () {return fileattr;}
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DWORD drive_type () {return fs.drive_type;}
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BOOL fs_fast_ea () {return fs.sym_opt & PC_CHECK_EA;}
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void set_path (const char *p) {strcpy (path, p);}
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char *return_and_clear_normalized_path ();
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const char * root_dir () { return fs.root_dir; }
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DWORD volser () { return fs.serial; }
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const char *volname () {return fs.name; }
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void fillin (HANDLE h);
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};
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/* Symlink marker */
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#define SYMLINK_COOKIE "!<symlink>"
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#define SYMLINK_EA_NAME ".CYGSYMLINK"
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/* Socket marker */
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#define SOCKET_COOKIE "!<socket >"
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/* Maximum depth of symlinks (after which ELOOP is issued). */
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#define MAX_LINK_DEPTH 10
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int __stdcall slash_unc_prefix_p (const char *path) __attribute__ ((regparm(1)));
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enum fe_types
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{
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FE_NADA = 0, /* Nothing special */
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FE_NNF = 1, /* Return NULL if not found */
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FE_NATIVE = 2, /* Return native path in path_conv struct */
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FE_CWD = 4 /* Search CWD for program */
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};
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const char * __stdcall find_exec (const char *name, path_conv& buf,
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const char *winenv = "PATH=",
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unsigned opt = FE_NADA,
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const char **known_suffix = NULL)
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__attribute__ ((regparm(3)));
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/* Common macros for checking for invalid path names */
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#define isdrive(s) (isalpha (*(s)) && (s)[1] == ':')
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static inline bool
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has_exec_chars (const char *buf, int len)
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{
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return len >= 2 &&
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((buf[0] == '#' && buf[1] == '!') ||
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(buf[0] == ':' && buf[1] == '\n') ||
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(buf[0] == 'M' && buf[1] == 'Z'));
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}
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int pathmatch (const char *path1, const char *path2) __attribute__ ((regparm (2)));
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int pathnmatch (const char *path1, const char *path2, int len) __attribute__ ((regparm (2)));
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int path_prefix_p (const char *path1, const char *path2, int len1) __attribute__ ((regparm (3)));
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