char *rm_xattr_read_hash(RmSession *session, RmFile *file) {
g_assert(file);
g_assert(session);
#if HAVE_XATTR
if(session->cfg->read_cksum_from_xattr == false) {
return NULL;
}
char cksum_key[64] = {0}, mtime_key[64] = {0}, mtime_buf[64] = {0},
cksum_hex_str[512] = {0};
memset(cksum_hex_str, '0', sizeof(cksum_hex_str));
cksum_hex_str[sizeof(cksum_hex_str) - 1] = 0;
if(0 || rm_xattr_build_key(session, "cksum", cksum_key, sizeof(cksum_key)) ||
rm_xattr_get(file, cksum_key, cksum_hex_str, sizeof(cksum_hex_str) - 1) ||
rm_xattr_build_key(session, "mtime", mtime_key, sizeof(mtime_key)) ||
rm_xattr_get(file, mtime_key, mtime_buf, sizeof(mtime_buf) - 1)) {
return NULL;
}
if(g_ascii_strtoll(mtime_buf, NULL, 10) < file->mtime) {
/* Data is too old and not useful, autoclean it */
rm_xattr_clear_hash(session, file);
return NULL;
}
/* remember, this file is special. A unicorn amongst files. */
file->has_ext_cksum = true;
return g_strdup(cksum_hex_str);
#else
return NULL;
#endif
}
static void rm_traverse_file(RmTravSession *trav_session, RmStat *statp,
char *path,
bool is_prefd, unsigned long path_index,
RmLintType file_type, bool is_symlink, bool is_hidden,
bool is_on_subvol_fs, short depth) {
RmSession *session = trav_session->session;
RmCfg *cfg = session->cfg;
if(rm_fmt_is_a_output(session->formats, path)) {
/* ignore files which are rmlint outputs */
return;
}
/* Try to autodetect the type of the lint */
if(file_type == RM_LINT_TYPE_UNKNOWN) {
RmLintType gid_check;
/* see if we can find a lint type */
if(statp->st_size == 0) {
if(!cfg->find_emptyfiles) {
return;
} else {
file_type = RM_LINT_TYPE_EMPTY_FILE;
}
} else if(cfg->permissions && access(path, cfg->permissions) == -1) {
/* bad permissions; ignore file */
trav_session->session->ignored_files++;
return;
} else if(cfg->find_badids &&
(gid_check = rm_util_uid_gid_check(statp, trav_session->userlist))) {
file_type = gid_check;
} else if(cfg->find_nonstripped && rm_util_is_nonstripped(path, statp)) {
file_type = RM_LINT_TYPE_NONSTRIPPED;
} else {
RmOff file_size = statp->st_size;
if(!cfg->limits_specified ||
((cfg->minsize == (RmOff)-1 || cfg->minsize <= file_size) &&
(cfg->maxsize == (RmOff)-1 || file_size <= cfg->maxsize))) {
if(rm_mounts_is_evil(trav_session->session->mounts, statp->st_dev) ==
false) {
file_type = RM_LINT_TYPE_DUPE_CANDIDATE;
} else {
/* A file in an evil fs. Ignore. */
trav_session->session->ignored_files++;
return;
}
} else {
return;
}
}
}
RmFile *file = rm_file_new(session, path, statp, file_type, is_prefd,
path_index, depth);
if(file != NULL) {
file->is_symlink = is_symlink;
file->is_hidden = is_hidden;
file->is_on_subvol_fs = is_on_subvol_fs;
file->link_count = statp->st_nlink;
rm_file_list_insert_file(file, session);
g_atomic_int_add(&trav_session->session->total_files, 1);
rm_fmt_set_state(session->formats, RM_PROGRESS_STATE_TRAVERSE);
if(trav_session->session->cfg->clear_xattr_fields &&
file->lint_type == RM_LINT_TYPE_DUPE_CANDIDATE) {
rm_xattr_clear_hash(session, file);
}
}
}