/**
* Find an alternative path to the configuration directory.
*
* Attempt to find an alternative configuration directory pathname. First
* check for the presence of the AFSCONF environment variable, then check for
* the contents of the $HOME/.AFSCONF file, then check for the contents of the
* /.AFSCONF file.
*
* The AFSCONF environment, or contents of $HOME/.AFSCONF, or /.AFSCONF will be
* typically set to something like /afs/<cell>/common/etc where, by convention,
* the default files for ThisCell and CellServDB will reside. Note that a major
* drawback is that a given afs client on that cell may NOT contain the same
* contents.
*
* @param[out] aconfdir pointer to an allocated string if a path was found
*
* @return 0 on success
*
* @note The returned string in pathp must be freed by the caller.
*/
static int
GetAlternatePath(char **aconfdir)
{
int code;
char *confdir = NULL;
char *afsconf_path = getenv("AFSCONF");
if (afsconf_path) {
confdir = strdup(afsconf_path);
if (!confdir)
return ENOMEM;
}
if (!confdir) {
char *home_dir = getenv("HOME");
if (home_dir) {
char *pathname = NULL;
int r = asprintf(&pathname, "%s/%s", home_dir, ".AFSCONF");
if (r < 0 || !pathname)
return ENOMEM;
code = ReadFirstLine(pathname, &confdir);
free(pathname);
pathname = NULL;
if (code && code != ENOENT)
return code;
}
}
if (!confdir) {
code = ReadFirstLine("/.AFSCONF", &confdir);
if (code && code != ENOENT)
return code;
}
if (!confdir)
return ENOENT;
*aconfdir = confdir;
return 0;
}
/* find a synaptic evdev.
*/
static void
FindSynapticEvent(char** eventdev,const char* searchstring) {
DIR* dir;
struct dirent* entry;
int lenght;
char path[sizeof *"/sys/class/input/" + sizeof *"/name"+NAME_MAX];
char *ret=NULL;
*eventdev=NULL;
SYSCALLPTR(dir=opendir("/sys/class/input/"));
strcpy(path,"/sys/class/input/");
lenght=strlen(path);
while ((entry=FindFileStartingWith(dir,"input",strlen("input")))) {
strcpy(&path[lenght],entry->d_name);
strcat(path,"/name");
if (ReadFirstLine(path,&ret))
continue;
if (strstr(ret,searchstring)) {
xfree(ret);
ret = NULL;
break;
}
xfree(ret);
ret = NULL;
}
if (!entry) {
SYSCALL(closedir(dir));
return;
}
strcpy(&path[lenght],entry->d_name);
SYSCALL(closedir(dir));
SYSCALLPTR(dir=opendir(path));
entry=FindFileStartingWith(dir,"event",strlen("event"));
if (entry) {
*eventdev=xcalloc(strlen(entry->d_name)+1,sizeof(char));
strcpy(*eventdev,entry->d_name);
}
SYSCALL(closedir(dir));
}
