_nc_set_writedir(char *dir)
{
const char *destination;
char actual[PATH_MAX];
if (dir == 0
#ifndef USE_ROOT_ENVIRON
&& use_terminfo_vars()
#endif
)
dir = getenv("TERMINFO");
if (dir != 0)
(void) _nc_tic_dir(dir);
destination = _nc_tic_dir(0);
if (make_db_root(destination) < 0) {
char *home = _nc_home_terminfo();
if (home != 0) {
destination = home;
if (make_db_root(destination) < 0)
_nc_err_abort("%s: permission denied (errno %d)",
destination, errno);
}
}
/*
* Note: because of this code, this logic should be exercised
* *once only* per run.
*/
#if USE_HASHED_DB
make_db_path(actual, destination, sizeof(actual));
#else
if (chdir(_nc_tic_dir(destination)) < 0
|| getcwd(actual, sizeof(actual)) == 0)
_nc_err_abort("%s: not a directory", destination);
#endif
_nc_keep_tic_dir(strdup(actual));
}
/*
* Check for access rights to destination directories
* Create any directories which don't exist.
*
* Note: there's no reason to return the result of make_db_root(), since
* this function is called only in instances where that has to succeed.
*/
static void
check_writeable(int code)
{
static const char dirnames[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
static bool verified[sizeof(dirnames)];
char dir[sizeof(LEAF_FMT)];
char *s = 0;
if (code == 0 || (s = strchr(dirnames, code)) == 0)
_nc_err_abort("Illegal terminfo subdirectory \"" LEAF_FMT "\"", code);
if (verified[s - dirnames])
return;
snprintf(dir, sizeof(dir), LEAF_FMT, code);
if (make_db_root(dir) < 0) {
_nc_err_abort("%s/%s: permission denied", _nc_tic_dir(0), dir);
}
verified[s - dirnames] = TRUE;
}
