static char *
FindModule(const char *module, const char *dirname, const char **subdirlist,
PatternPtr patterns)
{
char buf[PATH_MAX + 1];
char *name = NULL;
const char **subdirs = NULL;
const char **s;
if (strlen(dirname) > PATH_MAX)
return NULL;
subdirs = InitSubdirs(subdirlist);
if (!subdirs)
return NULL;
for (s = subdirs; *s; s++) {
if ((strlen(dirname) + strlen(*s)) > PATH_MAX)
continue;
strcpy(buf, dirname);
strcat(buf, *s);
if ((name = FindModuleInSubdir(buf, module)))
break;
}
FreeSubdirs(subdirs);
return name;
}
static char *
FindModuleInSubdir(const char *dirpath, const char *module)
{
struct dirent *direntry = NULL;
DIR *dir = NULL;
char *ret = NULL, tmpBuf[PATH_MAX];
struct stat stat_buf;
dir = opendir(dirpath);
if (!dir)
return NULL;
while ((direntry = readdir(dir))) {
if (direntry->d_name[0] == '.')
continue;
snprintf(tmpBuf, PATH_MAX, "%s%s/", dirpath, direntry->d_name);
/* the stat with the appended / fails for normal files,
and works for sub dirs fine, looks a bit strange in strace
but does seem to work */
if ((stat(tmpBuf, &stat_buf) == 0) && S_ISDIR(stat_buf.st_mode)) {
if ((ret = FindModuleInSubdir(tmpBuf, module)))
break;
continue;
}
snprintf(tmpBuf, PATH_MAX, "lib%s.so", module);
if (strcmp(direntry->d_name, tmpBuf) == 0) {
if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
ret = NULL;
break;
}
snprintf(tmpBuf, PATH_MAX, "%s_drv.so", module);
if (strcmp(direntry->d_name, tmpBuf) == 0) {
if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
ret = NULL;
break;
}
snprintf(tmpBuf, PATH_MAX, "%s.so", module);
if (strcmp(direntry->d_name, tmpBuf) == 0) {
if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
ret = NULL;
break;
}
}
closedir(dir);
return ret;
}
