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#ifndef homedir_h
#define homedir_h
/*
* Copyright (c) 2000, 2001 by Martin C. Shepherd.
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons
* to whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
* OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Except as contained in this notice, the name of a copyright holder
* shall not be used in advertising or otherwise to promote the sale, use
* or other dealings in this Software without prior written authorization
* of the copyright holder.
*/
typedef struct HomeDir HomeDir;
/*
* The following constructor and destructor functions create and
* delete the resources needed to look up home directories.
*/
HomeDir *_new_HomeDir(void);
HomeDir *_del_HomeDir(HomeDir *home);
/*
* Return the home directory of a specified user, or NULL if unknown.
*/
const char *_hd_lookup_home_dir(HomeDir *home, const char *user);
/*
* Get the description of the that occured when _hd_lookup_home_dir() was
* last called.
*/
const char *_hd_last_home_dir_error(HomeDir *home);
/*
* The _hd_scan_user_home_dirs() function calls a user-provided function
* for each username known by the system, passing the function both
* the name and the home directory of the user.
*
* The following macro can be used to declare both pointers and
* prototypes for the callback functions. The 'data' argument is
* a copy of the 'data' argument passed to _hd_scan_user_home_dirs()
* and is intended for the user of _hd_scan_user_home_dirs() to use
* to pass anonymous context data to the callback function.
* The username and home directories are passed to the callback function
* in the *usrnam and *homedir arguments respectively.
* To abort the scan, and have _hd_scan_user_home_dirs() return 1, the
* callback function can return 1. A description of up to maxerr
* characters before the terminating '\0', can be written to errmsg[].
* This can then be examined by calling _hd_last_home_dir_error().
* To indicate success and continue the scan, the callback function
* should return 0. _hd_scan_user_home_dirs() returns 0 on successful
* completion of the scan, or 1 if an error occurred or a call to the
* callback function returned 1.
*/
#define HOME_DIR_FN(fn) int (fn)(void *data, const char *usrnam, const char *homedir, char *errmsg, int maxerr)
int _hd_scan_user_home_dirs(HomeDir *home, void *data,
HOME_DIR_FN(*callback_fn));
#endif
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