diff options
Diffstat (limited to 'src/udev/udev-rules.c')
| -rw-r--r-- | src/udev/udev-rules.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c index c5e85faaaf..e2bb99ca7d 100644 --- a/src/udev/udev-rules.c +++ b/src/udev/udev-rules.c @@ -2755,3 +2755,69 @@ finish: return r; } + +#ifdef ENABLE_RULE_GENERATOR +/* function to return the count of rules that assign NAME= to a value matching arg#2 - returns 0,1 */ +int udev_rules_assigning_name_to(struct udev_rules *rules, const char *match_name) +{ + struct token *cur; + struct token *rule; + enum escape_type esc = ESCAPE_UNSET; + bool name_final = false; + + if (rules->tokens == NULL) + return 0; + + /* loop through token list, match, run actions or forward to next rule */ + cur = &rules->tokens[0]; + rule = cur; + for (;;) { + dump_token(rules, cur); + switch (cur->type) { + case TK_RULE: + /* current rule */ + rule = cur; + if (!rule->rule.can_set_name) + goto nomatch; + break; + case TK_M_SUBSYSTEM: + if (match_key(rules, cur, "net") != 0) + goto nomatch; + break; + case TK_M_ACTION: + if (match_key(rules, cur, "add") != 0) + goto nomatch; + break; + case TK_A_NAME: { + const char *name = rules_str(rules, cur->key.value_off); + char name_str[UTIL_PATH_SIZE]; + int count; + + strscpy(name_str,UTIL_PATH_SIZE,name); + count = util_replace_chars(name_str, "/"); + if (count > 0) + log_debug("%i character(s) replaced\n", count); + if (streq(name_str,match_name)) { + log_debug("found a match! NAME assigns %s in: %s:%u\n", + name, + rules_str(rules, rule->rule.filename_off), + rule->rule.filename_line); + return 1; /* no need to find more than one */ + } + + /* skip to next rule */ + goto nomatch; + } + case TK_END: + return 0; + } + + cur++; + continue; + nomatch: + /* fast-forward to next rule */ + cur = rule + rule->rule.token_count; + } +} +#endif + |