newlib-cygwin/winsup/cygwin/path.h

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/* path.h: path data structures
Copyright 1996, 1997, 1998, 2000 Cygnus Solutions.
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. */
struct suffix_info
{
const char *name;
int addon;
suffix_info (const char *s, int addit = 0) {name = s, addon = addit;}
};
enum symlink_follow
{
SYMLINK_FOLLOW,
SYMLINK_NOFOLLOW,
SYMLINK_IGNORE,
SYMLINK_CONTENTS
};
#include <sys/mount.h>
enum
{
PATH_NOTHING = 0,
PATH_SYMLINK = MOUNT_SYMLINK,
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PATH_BINARY = MOUNT_BINARY,
PATH_EXEC = MOUNT_EXEC,
PATH_SOCKET = 0x40000000,
PATH_HASACLS = 0x80000000
};
class path_conv
{
char path[MAX_PATH];
public:
unsigned path_flags;
int has_acls () {return path_flags & PATH_HASACLS;}
int hasgood_inode () {return path_flags & PATH_HASACLS;} // Not strictly correct
int isbinary () {return path_flags & PATH_BINARY;}
int issymlink () {return path_flags & PATH_SYMLINK;}
int issocket () {return path_flags & PATH_SOCKET;}
int isexec () {return path_flags & PATH_EXEC;}
void set_binary () {path_flags |= PATH_BINARY;}
void set_symlink () {path_flags |= PATH_SYMLINK;}
void set_exec (int x = 1) {path_flags |= x ? PATH_EXEC : PATH_NOTHING;}
void set_has_acls (int x = 1) {path_flags |= x ? PATH_HASACLS : PATH_NOTHING;}
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char *known_suffix;
int error;
DWORD devn;
int unit;
DWORD fileattr;
path_conv (const char * const, symlink_follow follow_mode = SYMLINK_FOLLOW,
int use_full_path = 0, const suffix_info *suffixes = NULL);
inline char *get_win32 () { return path; }
operator char *() {return path; }
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BOOL is_device () {return devn != FH_BAD;}
DWORD get_devn () {return devn == FH_BAD ? (DWORD) FH_DISK : devn;}
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short get_unitn () {return devn == FH_BAD ? 0 : unit;}
DWORD file_attributes () {return fileattr;}
};
/* Symlink marker */
#define SYMLINK_COOKIE "!<symlink>"
/* Socket marker */
#define SOCKET_COOKIE "!<socket >"
/* Maximum depth of symlinks (after which ELOOP is issued). */
#define MAX_LINK_DEPTH 10
extern suffix_info std_suffixes[];
int __stdcall get_device_number (const char *name, int &unit, BOOL from_conv = FALSE);
int __stdcall slash_unc_prefix_p (const char *path);
/* Common macros for checking for invalid path names */
#define check_null_empty_path(src) \
(!(src) ? EFAULT : *(src) ? 0 : ENOENT)
#define check_null_empty_path_errno(src) \
({ \
int __err; \
if ((__err = check_null_empty_path(src))) \
set_errno (__err); \
__err; \
})