/* SPDX-License-Identifier: GPL-2.0+ */
#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <fnmatch.h>
-#include <limits.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
#include "alloc-util.h"
#include "conf-files.h"
#include "def.h"
-#include "device-private.h"
#include "device-util.h"
#include "dirent-util.h"
#include "escape.h"
#include "glob-util.h"
#include "libudev-util.h"
#include "mkdir.h"
+#include "nulstr-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "proc-cmdline.h"
#include "stat-util.h"
-#include "stdio-util.h"
-#include "strbuf.h"
-#include "string-util.h"
#include "strv.h"
#include "strxcpyx.h"
#include "sysctl-util.h"
#include "udev-builtin.h"
-#include "udev.h"
+#include "udev-event.h"
+#include "udev-rules.h"
#include "user-util.h"
-#include "util.h"
-#define PREALLOC_TOKEN 2048
#define RULES_DIRS (const char* const*) CONF_PATHS_STRV("udev/rules.d")
-struct uid_gid {
- unsigned name_off;
- union {
- uid_t uid;
- gid_t gid;
- };
-};
-
-struct UdevRules {
- usec_t dirs_ts_usec;
- ResolveNameTiming resolve_name_timing;
-
- /* every key in the rules file becomes a token */
- struct token *tokens;
- size_t token_cur;
- size_t token_max;
-
- /* all key strings are copied and de-duplicated in a single continuous string buffer */
- struct strbuf *strbuf;
-
- /* during rule parsing, uid/gid lookup results are cached */
- struct uid_gid *uids;
- size_t uids_cur;
- size_t uids_max;
- struct uid_gid *gids;
- size_t gids_cur;
- size_t gids_max;
-};
-
-static char *rules_str(UdevRules *rules, unsigned off) {
- return rules->strbuf->buf + off;
-}
-
-static unsigned rules_add_string(UdevRules *rules, const char *s) {
- return strbuf_add_string(rules->strbuf, s, strlen(s));
+static void udev_rule_token_free(UdevRuleToken *token) {
+ free(token);
}
-/* KEY=="", KEY!="", KEY+="", KEY-="", KEY="", KEY:="" */
-enum operation_type {
- OP_UNSET,
-
- OP_MATCH,
- OP_NOMATCH,
- OP_MATCH_MAX,
-
- OP_ADD,
- OP_REMOVE,
- OP_ASSIGN,
- OP_ASSIGN_FINAL,
-};
-
-enum string_glob_type {
- GL_UNSET,
- GL_PLAIN, /* no special chars */
- GL_GLOB, /* shell globs ?,*,[] */
- GL_SPLIT, /* multi-value A|B */
- GL_SPLIT_GLOB, /* multi-value with glob A*|B* */
- GL_SOMETHING, /* commonly used "?*" */
-};
-
-enum string_subst_type {
- SB_UNSET,
- SB_NONE,
- SB_FORMAT,
- SB_SUBSYS,
-};
-
-/* tokens of a rule are sorted/handled in this order */
-enum token_type {
- TK_UNSET,
- TK_RULE,
-
- TK_M_ACTION, /* val */
- TK_M_DEVPATH, /* val */
- TK_M_KERNEL, /* val */
- TK_M_DEVLINK, /* val */
- TK_M_NAME, /* val */
- TK_M_ENV, /* val, attr */
- TK_M_TAG, /* val */
- TK_M_SUBSYSTEM, /* val */
- TK_M_DRIVER, /* val */
- TK_M_WAITFOR, /* val */
- TK_M_ATTR, /* val, attr */
- TK_M_SYSCTL, /* val, attr */
-
- TK_M_PARENTS_MIN,
- TK_M_KERNELS, /* val */
- TK_M_SUBSYSTEMS, /* val */
- TK_M_DRIVERS, /* val */
- TK_M_ATTRS, /* val, attr */
- TK_M_TAGS, /* val */
- TK_M_PARENTS_MAX,
-
- TK_M_TEST, /* val, mode_t */
- TK_M_PROGRAM, /* val */
- TK_M_IMPORT_FILE, /* val */
- TK_M_IMPORT_PROG, /* val */
- TK_M_IMPORT_BUILTIN, /* val */
- TK_M_IMPORT_DB, /* val */
- TK_M_IMPORT_CMDLINE, /* val */
- TK_M_IMPORT_PARENT, /* val */
- TK_M_RESULT, /* val */
- TK_M_MAX,
-
- TK_A_STRING_ESCAPE_NONE,
- TK_A_STRING_ESCAPE_REPLACE,
- TK_A_DB_PERSIST,
- TK_A_INOTIFY_WATCH, /* int */
- TK_A_DEVLINK_PRIO, /* int */
- TK_A_OWNER, /* val */
- TK_A_GROUP, /* val */
- TK_A_MODE, /* val */
- TK_A_OWNER_ID, /* uid_t */
- TK_A_GROUP_ID, /* gid_t */
- TK_A_MODE_ID, /* mode_t */
- TK_A_TAG, /* val */
- TK_A_STATIC_NODE, /* val */
- TK_A_SECLABEL, /* val, attr */
- TK_A_ENV, /* val, attr */
- TK_A_NAME, /* val */
- TK_A_DEVLINK, /* val */
- TK_A_ATTR, /* val, attr */
- TK_A_SYSCTL, /* val, attr */
- TK_A_RUN_BUILTIN, /* val, bool */
- TK_A_RUN_PROGRAM, /* val, bool */
- TK_A_GOTO, /* size_t */
-
- TK_END,
-};
-
-/* we try to pack stuff in a way that we take only 12 bytes per token */
-struct token {
- union {
- unsigned char type; /* same in rule and key */
- struct {
- enum token_type type:8;
- bool can_set_name:1;
- bool has_static_node:1;
- unsigned unused:6;
- unsigned short token_count;
- unsigned label_off;
- unsigned short filename_off;
- unsigned short filename_line;
- } rule;
- struct {
- enum token_type type:8;
- enum operation_type op:8;
- enum string_glob_type glob:8;
- enum string_subst_type subst:4;
- enum string_subst_type attrsubst:4;
- unsigned value_off;
- union {
- unsigned attr_off;
- unsigned rule_goto;
- mode_t mode;
- uid_t uid;
- gid_t gid;
- int devlink_prio;
- int watch;
- enum udev_builtin_cmd builtin_cmd;
- };
- } key;
- };
-};
-
-#define MAX_TK 64
-struct rule_tmp {
- UdevRules *rules;
- struct token rule;
- struct token token[MAX_TK];
- size_t token_cur;
-};
-
-#if ENABLE_DEBUG_UDEV
-static const char *operation_str(enum operation_type type) {
- static const char *const operation_strs[] = {
- [OP_UNSET] = "UNSET",
- [OP_MATCH] = "match",
- [OP_NOMATCH] = "nomatch",
- [OP_MATCH_MAX] = "MATCH_MAX",
-
- [OP_ADD] = "add",
- [OP_REMOVE] = "remove",
- [OP_ASSIGN] = "assign",
- [OP_ASSIGN_FINAL] = "assign-final",
- };
+static void udev_rule_line_clear_tokens(UdevRuleLine *rule_line) {
+ UdevRuleToken *i, *next;
- return operation_strs[type];
-}
+ assert(rule_line);
-static const char *string_glob_str(enum string_glob_type type) {
- static const char *const string_glob_strs[] = {
- [GL_UNSET] = "UNSET",
- [GL_PLAIN] = "plain",
- [GL_GLOB] = "glob",
- [GL_SPLIT] = "split",
- [GL_SPLIT_GLOB] = "split-glob",
- [GL_SOMETHING] = "split-glob",
- };
+ LIST_FOREACH_SAFE(tokens, i, next, rule_line->tokens)
+ udev_rule_token_free(i);
- return string_glob_strs[type];
+ rule_line->tokens = NULL;
}
-static const char *token_str(enum token_type type) {
- static const char *const token_strs[] = {
- [TK_UNSET] = "UNSET",
- [TK_RULE] = "RULE",
-
- [TK_M_ACTION] = "M ACTION",
- [TK_M_DEVPATH] = "M DEVPATH",
- [TK_M_KERNEL] = "M KERNEL",
- [TK_M_DEVLINK] = "M DEVLINK",
- [TK_M_NAME] = "M NAME",
- [TK_M_ENV] = "M ENV",
- [TK_M_TAG] = "M TAG",
- [TK_M_SUBSYSTEM] = "M SUBSYSTEM",
- [TK_M_DRIVER] = "M DRIVER",
- [TK_M_WAITFOR] = "M WAITFOR",
- [TK_M_ATTR] = "M ATTR",
- [TK_M_SYSCTL] = "M SYSCTL",
-
- [TK_M_PARENTS_MIN] = "M PARENTS_MIN",
- [TK_M_KERNELS] = "M KERNELS",
- [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
- [TK_M_DRIVERS] = "M DRIVERS",
- [TK_M_ATTRS] = "M ATTRS",
- [TK_M_TAGS] = "M TAGS",
- [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
-
- [TK_M_TEST] = "M TEST",
- [TK_M_PROGRAM] = "M PROGRAM",
- [TK_M_IMPORT_FILE] = "M IMPORT_FILE",
- [TK_M_IMPORT_PROG] = "M IMPORT_PROG",
- [TK_M_IMPORT_BUILTIN] = "M IMPORT_BUILTIN",
- [TK_M_IMPORT_DB] = "M IMPORT_DB",
- [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE",
- [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT",
- [TK_M_RESULT] = "M RESULT",
- [TK_M_MAX] = "M MAX",
-
- [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
- [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
- [TK_A_DB_PERSIST] = "A DB_PERSIST",
- [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH",
- [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO",
- [TK_A_OWNER] = "A OWNER",
- [TK_A_GROUP] = "A GROUP",
- [TK_A_MODE] = "A MODE",
- [TK_A_OWNER_ID] = "A OWNER_ID",
- [TK_A_GROUP_ID] = "A GROUP_ID",
- [TK_A_STATIC_NODE] = "A STATIC_NODE",
- [TK_A_SECLABEL] = "A SECLABEL",
- [TK_A_MODE_ID] = "A MODE_ID",
- [TK_A_ENV] = "A ENV",
- [TK_A_TAG] = "A ENV",
- [TK_A_NAME] = "A NAME",
- [TK_A_DEVLINK] = "A DEVLINK",
- [TK_A_ATTR] = "A ATTR",
- [TK_A_SYSCTL] = "A SYSCTL",
- [TK_A_RUN_BUILTIN] = "A RUN_BUILTIN",
- [TK_A_RUN_PROGRAM] = "A RUN_PROGRAM",
- [TK_A_GOTO] = "A GOTO",
-
- [TK_END] = "END",
- };
+static void udev_rule_line_free(UdevRuleLine *rule_line) {
+ if (!rule_line)
+ return;
- return token_strs[type];
-}
+ udev_rule_line_clear_tokens(rule_line);
-static void dump_token(UdevRules *rules, struct token *token) {
- enum token_type type = token->type;
- enum operation_type op = token->key.op;
- enum string_glob_type glob = token->key.glob;
- const char *value = rules_str(rules, token->key.value_off);
- const char *attr = &rules->strbuf->buf[token->key.attr_off];
-
- switch (type) {
- case TK_RULE:
- {
- const char *tks_ptr = (char *)rules->tokens;
- const char *tk_ptr = (char *)token;
- unsigned idx = (tk_ptr - tks_ptr) / sizeof(struct token);
-
- log_debug("* RULE %s:%u, token: %u, count: %u, label: '%s'",
- &rules->strbuf->buf[token->rule.filename_off], token->rule.filename_line,
- idx, token->rule.token_count,
- &rules->strbuf->buf[token->rule.label_off]);
- break;
- }
- case TK_M_ACTION:
- case TK_M_DEVPATH:
- case TK_M_KERNEL:
- case TK_M_SUBSYSTEM:
- case TK_M_DRIVER:
- case TK_M_WAITFOR:
- case TK_M_DEVLINK:
- case TK_M_NAME:
- case TK_M_KERNELS:
- case TK_M_SUBSYSTEMS:
- case TK_M_DRIVERS:
- case TK_M_TAGS:
- case TK_M_PROGRAM:
- case TK_M_IMPORT_FILE:
- case TK_M_IMPORT_PROG:
- case TK_M_IMPORT_DB:
- case TK_M_IMPORT_CMDLINE:
- case TK_M_IMPORT_PARENT:
- case TK_M_RESULT:
- case TK_A_NAME:
- case TK_A_DEVLINK:
- case TK_A_OWNER:
- case TK_A_GROUP:
- case TK_A_MODE:
- case TK_A_RUN_BUILTIN:
- case TK_A_RUN_PROGRAM:
- log_debug("%s %s '%s'(%s)",
- token_str(type), operation_str(op), value, string_glob_str(glob));
- break;
- case TK_M_IMPORT_BUILTIN:
- log_debug("%s %i '%s'", token_str(type), token->key.builtin_cmd, value);
- break;
- case TK_M_ATTR:
- case TK_M_SYSCTL:
- case TK_M_ATTRS:
- case TK_M_ENV:
- case TK_A_ATTR:
- case TK_A_SYSCTL:
- case TK_A_ENV:
- log_debug("%s %s '%s' '%s'(%s)",
- token_str(type), operation_str(op), attr, value, string_glob_str(glob));
- break;
- case TK_M_TAG:
- case TK_A_TAG:
- log_debug("%s %s '%s'", token_str(type), operation_str(op), value);
- break;
- case TK_A_STRING_ESCAPE_NONE:
- case TK_A_STRING_ESCAPE_REPLACE:
- case TK_A_DB_PERSIST:
- log_debug("%s", token_str(type));
- break;
- case TK_M_TEST:
- log_debug("%s %s '%s'(%s) %#o",
- token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode);
- break;
- case TK_A_INOTIFY_WATCH:
- log_debug("%s %u", token_str(type), token->key.watch);
- break;
- case TK_A_DEVLINK_PRIO:
- log_debug("%s %u", token_str(type), token->key.devlink_prio);
- break;
- case TK_A_OWNER_ID:
- log_debug("%s %s %u", token_str(type), operation_str(op), token->key.uid);
- break;
- case TK_A_GROUP_ID:
- log_debug("%s %s %u", token_str(type), operation_str(op), token->key.gid);
- break;
- case TK_A_MODE_ID:
- log_debug("%s %s %#o", token_str(type), operation_str(op), token->key.mode);
- break;
- case TK_A_STATIC_NODE:
- log_debug("%s '%s'", token_str(type), value);
- break;
- case TK_A_SECLABEL:
- log_debug("%s %s '%s' '%s'", token_str(type), operation_str(op), attr, value);
- break;
- case TK_A_GOTO:
- log_debug("%s '%s' %u", token_str(type), value, token->key.rule_goto);
- break;
- case TK_END:
- log_debug("* %s", token_str(type));
- break;
- case TK_M_PARENTS_MIN:
- case TK_M_PARENTS_MAX:
- case TK_M_MAX:
- case TK_UNSET:
- log_debug("Unknown token type %u", type);
- break;
+ if (rule_line->rule_file) {
+ if (rule_line->rule_file->current_line == rule_line)
+ rule_line->rule_file->current_line = rule_line->rule_lines_prev;
+
+ LIST_REMOVE(rule_lines, rule_line->rule_file->rule_lines, rule_line);
}
+
+ free(rule_line->line);
+ free(rule_line);
}
-static void dump_rules(UdevRules *rules) {
- size_t i;
+DEFINE_TRIVIAL_CLEANUP_FUNC(UdevRuleLine*, udev_rule_line_free);
+
+static void udev_rule_file_free(UdevRuleFile *rule_file) {
+ UdevRuleLine *i, *next;
+
+ if (!rule_file)
+ return;
+
+ LIST_FOREACH_SAFE(rule_lines, i, next, rule_file->rule_lines)
+ udev_rule_line_free(i);
- log_debug("Dumping %zu (%zu bytes) tokens, %zu (%zu bytes) strings",
- rules->token_cur,
- rules->token_cur * sizeof(struct token),
- rules->strbuf->nodes_count,
- rules->strbuf->len);
- for (i = 0; i < rules->token_cur; i++)
- dump_token(rules, &rules->tokens[i]);
+ free(rule_file->filename);
+ free(rule_file);
}
-#else
-static void dump_token(UdevRules *rules, struct token *token) {}
-static void dump_rules(UdevRules *rules) {}
-#endif /* ENABLE_DEBUG_UDEV */
-
-static int add_token(UdevRules *rules, struct token *token) {
- /* grow buffer if needed */
- if (!GREEDY_REALLOC(rules->tokens, rules->token_max, rules->token_cur + 1))
- return -ENOMEM;
- memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
- rules->token_cur++;
- return 0;
+UdevRules *udev_rules_free(UdevRules *rules) {
+ UdevRuleFile *i, *next;
+
+ if (!rules)
+ return NULL;
+
+ LIST_FOREACH_SAFE(rule_files, i, next, rules->rule_files)
+ udev_rule_file_free(i);
+
+ hashmap_free_free_key(rules->known_users);
+ hashmap_free_free_key(rules->known_groups);
+ return mfree(rules);
}
-static void log_unknown_owner(sd_device *dev, int error, const char *entity, const char *owner) {
+static void log_unknown_owner(sd_device *dev, UdevRules *rules, int error, const char *entity, const char *name) {
if (IN_SET(abs(error), ENOENT, ESRCH))
- log_device_error(dev, "Specified %s '%s' unknown", entity, owner);
+ log_rule_error(dev, rules, "Unknown %s '%s', ignoring", entity, name);
else
- log_device_error_errno(dev, error, "Failed to resolve %s '%s': %m", entity, owner);
+ log_rule_error_errno(dev, rules, error, "Failed to resolve %s '%s', ignoring: %m", entity, name);
}
-static uid_t add_uid(UdevRules *rules, const char *owner) {
- uid_t uid = 0;
- unsigned off;
- size_t i;
+static int rule_resolve_user(UdevRules *rules, const char *name, uid_t *ret) {
+ _cleanup_free_ char *n = NULL;
+ uid_t uid;
+ void *val;
int r;
- /* lookup, if we know it already */
- for (i = 0; i < rules->uids_cur; i++) {
- off = rules->uids[i].name_off;
- if (streq(rules_str(rules, off), owner))
- return rules->uids[i].uid;
+ assert(rules);
+ assert(name);
+
+ val = hashmap_get(rules->known_users, name);
+ if (val) {
+ *ret = PTR_TO_UID(val);
+ return 0;
+ }
+
+ r = get_user_creds(&name, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
+ if (r < 0) {
+ log_unknown_owner(NULL, rules, r, "user", name);
+ *ret = UID_INVALID;
+ return 0;
}
- r = get_user_creds(&owner, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
- if (r < 0)
- log_unknown_owner(NULL, r, "user", owner);
- /* grow buffer if needed */
- if (!GREEDY_REALLOC(rules->uids, rules->uids_max, rules->uids_cur + 1))
+ n = strdup(name);
+ if (!n)
return -ENOMEM;
- rules->uids[rules->uids_cur].uid = uid;
- off = rules_add_string(rules, owner);
- if (off <= 0)
- return uid;
- rules->uids[rules->uids_cur].name_off = off;
- rules->uids_cur++;
- return uid;
+ r = hashmap_ensure_allocated(&rules->known_users, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(rules->known_users, n, UID_TO_PTR(uid));
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(n);
+ *ret = uid;
+ return 0;
}
-static gid_t add_gid(UdevRules *rules, const char *group) {
- gid_t gid = 0;
- unsigned off;
- size_t i;
+static int rule_resolve_group(UdevRules *rules, const char *name, gid_t *ret) {
+ _cleanup_free_ char *n = NULL;
+ gid_t gid;
+ void *val;
int r;
- /* lookup, if we know it already */
- for (i = 0; i < rules->gids_cur; i++) {
- off = rules->gids[i].name_off;
- if (streq(rules_str(rules, off), group))
- return rules->gids[i].gid;
+ assert(rules);
+ assert(name);
+
+ val = hashmap_get(rules->known_groups, name);
+ if (val) {
+ *ret = PTR_TO_GID(val);
+ return 0;
+ }
+
+ r = get_group_creds(&name, &gid, USER_CREDS_ALLOW_MISSING);
+ if (r < 0) {
+ log_unknown_owner(NULL, rules, r, "group", name);
+ *ret = GID_INVALID;
+ return 0;
}
- r = get_group_creds(&group, &gid, USER_CREDS_ALLOW_MISSING);
- if (r < 0)
- log_unknown_owner(NULL, r, "group", group);
- /* grow buffer if needed */
- if (!GREEDY_REALLOC(rules->gids, rules->gids_max, rules->gids_cur + 1))
+ n = strdup(name);
+ if (!n)
return -ENOMEM;
- rules->gids[rules->gids_cur].gid = gid;
- off = rules_add_string(rules, group);
- if (off <= 0)
- return gid;
- rules->gids[rules->gids_cur].name_off = off;
- rules->gids_cur++;
- return gid;
+ r = hashmap_ensure_allocated(&rules->known_groups, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(rules->known_groups, n, GID_TO_PTR(gid));
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(n);
+ *ret = gid;
+ return 0;
}
-static int import_property_from_string(sd_device *dev, char *line) {
- char *key;
- char *val;
- size_t len;
+static UdevRuleSubstituteType rule_get_substitution_type(const char *str) {
+ assert(str);
- /* find key */
- key = line;
- while (isspace(key[0]))
- key++;
+ if (str[0] == '[')
+ return SUBST_TYPE_SUBSYS;
+ if (strchr(str, '%') || strchr(str, '$'))
+ return SUBST_TYPE_FORMAT;
+ return SUBST_TYPE_PLAIN;
+}
- /* comment or empty line */
- if (IN_SET(key[0], '#', '\0'))
- return 0;
+static void rule_line_append_token(UdevRuleLine *rule_line, UdevRuleToken *token) {
+ assert(rule_line);
+ assert(token);
- /* split key/value */
- val = strchr(key, '=');
- if (!val)
- return -EINVAL;
- val[0] = '\0';
- val++;
+ if (rule_line->current_token)
+ LIST_APPEND(tokens, rule_line->current_token, token);
+ else
+ LIST_APPEND(tokens, rule_line->tokens, token);
- /* find value */
- while (isspace(val[0]))
- val++;
+ rule_line->current_token = token;
+}
- /* terminate key */
- len = strlen(key);
- if (len == 0)
- return -EINVAL;
- while (isspace(key[len-1]))
- len--;
- key[len] = '\0';
+static int rule_line_add_token(UdevRuleLine *rule_line, UdevRuleTokenType type, UdevRuleOperatorType op, char *value, void *data) {
+ UdevRuleToken *token;
+ UdevRuleMatchType match_type = _MATCH_TYPE_INVALID;
+ UdevRuleSubstituteType subst_type = _SUBST_TYPE_INVALID;
+ bool remove_trailing_whitespace = false;
+ size_t len;
- /* terminate value */
- len = strlen(val);
- if (len == 0)
- return -EINVAL;
- while (isspace(val[len-1]))
- len--;
- val[len] = '\0';
+ assert(rule_line);
+ assert(type >= 0 && type < _TK_TYPE_MAX);
+ assert(op >= 0 && op < _OP_TYPE_MAX);
+
+ if (type < _TK_M_MAX) {
+ assert(value);
+ assert(IN_SET(op, OP_MATCH, OP_NOMATCH));
+
+ if (type == TK_M_SUBSYSTEM && STR_IN_SET(value, "subsystem", "bus", "class"))
+ match_type = MATCH_TYPE_SUBSYSTEM;
+ else if (isempty(value))
+ match_type = MATCH_TYPE_EMPTY;
+ else if (streq(value, "?*")) {
+ /* Convert KEY=="?*" -> KEY!="" */
+ match_type = MATCH_TYPE_EMPTY;
+ op = op == OP_MATCH ? OP_NOMATCH : OP_MATCH;
+ } else if (string_is_glob(value))
+ match_type = MATCH_TYPE_GLOB;
+ else
+ match_type = MATCH_TYPE_PLAIN;
- if (len == 0)
- return -EINVAL;
+ if (type < TK_M_TEST || type == TK_M_RESULT) {
+ /* Convert value string to nulstr. */
+ len = strlen(value);
+ if (len > 1 && (value[len - 1] == '|' || strstr(value, "||"))) {
+ /* In this case, just replacing '|' -> '\0' does not work... */
+ _cleanup_free_ char *tmp = NULL;
+ char *i, *j;
+ bool v = true;
+
+ tmp = strdup(value);
+ if (!tmp)
+ return log_oom();
- /* unquote */
- if (IN_SET(val[0], '"', '\'')) {
- if (len == 1 || val[len-1] != val[0])
- return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
- "Inconsistent quoting: '%s', skip",
- line);
- val[len-1] = '\0';
- val++;
+ for (i = tmp, j = value; *i != '\0'; i++)
+ if (*i == '|')
+ v = true;
+ else {
+ if (v) {
+ *j++ = '\0';
+ v = false;
+ }
+ *j++ = *i;
+ }
+ j[0] = j[1] = '\0';
+ } else {
+ /* Simple conversion. */
+ char *i;
+
+ for (i = value; *i != '\0'; i++)
+ if (*i == '|')
+ *i = '\0';
+ }
+ }
}
- return device_add_property(dev, key, val);
-}
+ if (IN_SET(type, TK_M_ATTR, TK_M_PARENTS_ATTR)) {
+ assert(value);
+ assert(data);
-static int import_file_into_properties(sd_device *dev, const char *filename) {
- _cleanup_fclose_ FILE *f = NULL;
- int r;
+ len = strlen(value);
+ if (len > 0 && !isspace(value[len - 1]))
+ remove_trailing_whitespace = true;
- f = fopen(filename, "re");
- if (!f)
- return -errno;
+ subst_type = rule_get_substitution_type((const char*) data);
+ }
- for (;;) {
- _cleanup_free_ char *line = NULL;
+ token = new(UdevRuleToken, 1);
+ if (!token)
+ return -ENOMEM;
- r = read_line(f, LONG_LINE_MAX, &line);
- if (r < 0)
- return r;
- if (r == 0)
- break;
+ *token = (UdevRuleToken) {
+ .type = type,
+ .op = op,
+ .value = value,
+ .data = data,
+ .match_type = match_type,
+ .attr_subst_type = subst_type,
+ .attr_match_remove_trailing_whitespace = remove_trailing_whitespace,
+ };
- (void) import_property_from_string(dev, line);
- }
+ rule_line_append_token(rule_line, token);
+
+ if (token->type == TK_A_NAME)
+ SET_FLAG(rule_line->type, LINE_HAS_NAME, true);
+
+ else if (IN_SET(token->type, TK_A_DEVLINK,
+ TK_A_OWNER, TK_A_GROUP, TK_A_MODE,
+ TK_A_OWNER_ID, TK_A_GROUP_ID, TK_A_MODE_ID))
+ SET_FLAG(rule_line->type, LINE_HAS_DEVLINK, true);
+
+ else if (token->type >= _TK_A_MIN ||
+ IN_SET(token->type,
+ TK_M_IMPORT_FILE, TK_M_IMPORT_PROGRAM, TK_M_IMPORT_BUILTIN,
+ TK_M_IMPORT_DB, TK_M_IMPORT_CMDLINE, TK_M_IMPORT_PARENT))
+ SET_FLAG(rule_line->type, LINE_UPDATE_SOMETHING, true);
return 0;
}
-static int import_program_into_properties(UdevEvent *event,
- usec_t timeout_usec,
- const char *program) {
- char result[UTIL_LINE_SIZE];
- char *line;
+static int parse_token(UdevRules *rules, const char *key, char *attr, UdevRuleOperatorType op, char *value) {
+ bool is_match = IN_SET(op, OP_MATCH, OP_NOMATCH);
+ UdevRuleLine *rule_line;
int r;
- r = udev_event_spawn(event, timeout_usec, true, program, result, sizeof result);
- if (r < 0)
- return r;
- if (r > 0)
- return -EIO;
+ assert(rules);
+ assert(rules->current_file);
+ assert(rules->current_file->current_line);
+ assert(key);
+ assert(value);
+
+ rule_line = rules->current_file->current_line;
+
+ if (streq(key, "ACTION")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_ACTION, op, value, NULL);
+ } else if (streq(key, "DEVPATH")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_DEVPATH, op, value, NULL);
+ } else if (streq(key, "KERNEL")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_KERNEL, op, value, NULL);
+ } else if (streq(key, "SYMLINK")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, is_match ? TK_M_DEVLINK : TK_A_DEVLINK, op, value, NULL);
+ } else if (streq(key, "NAME")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ADD) {
+ log_token_warning(rules, "%s key takes '==', '!=', '=', or ':=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
+
+ if (!is_match) {
+ if (streq(value, "%k"))
+ return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
+ "Ignoring NAME=\"%%k\" is ignored, as it breaks kernel supplied names.");
+ if (isempty(value))
+ return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
+ "Ignoring NAME=\"\", as udev will not delete any device nodes.");
+ r = rule_line_add_token(rule_line, TK_A_NAME, op, value, NULL);
+ } else
+ r = rule_line_add_token(rule_line, TK_M_NAME, op, value, NULL);
+ } else if (streq(key, "ENV")) {
+ if (isempty(attr))
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ASSIGN_FINAL) {
+ log_token_warning(rules, "%s key takes '==', '!=', '=', or '+=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
- line = result;
- while (line) {
- char *pos;
+ if (!is_match) {
+ if (STR_IN_SET(attr,
+ "ACTION", "DEVLINKS", "DEVNAME", "DEVPATH", "DEVTYPE", "DRIVER",
+ "IFINDEX", "MAJOR", "MINOR", "SEQNUM", "SUBSYSTEM", "TAGS"))
+ return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
+ "Invalid ENV attribute. '%s' cannot be set.", attr);
- pos = strchr(line, '\n');
- if (pos) {
- pos[0] = '\0';
- pos = &pos[1];
+ r = rule_line_add_token(rule_line, TK_A_ENV, op, value, attr);
+ } else
+ r = rule_line_add_token(rule_line, TK_M_ENV, op, value, attr);
+ } else if (streq(key, "TAG")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_ASSIGN_FINAL) {
+ log_token_warning(rules, "%s key takes '==', '!=', '=', or '+=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
}
- (void) import_property_from_string(event->dev, line);
- line = pos;
- }
- return 0;
-}
-static int import_parent_into_properties(sd_device *dev, const char *filter) {
- const char *key, *val;
- sd_device *parent;
- int r;
+ r = rule_line_add_token(rule_line, is_match ? TK_M_TAG : TK_A_TAG, op, value, NULL);
+ } else if (streq(key, "SUBSYSTEM")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ if (STR_IN_SET(value, "bus", "class"))
+ log_token_warning(rules, "'%s' must be specified as 'subsystem'; please fix it", value);
+
+ r = rule_line_add_token(rule_line, TK_M_SUBSYSTEM, op, value, NULL);
+ } else if (streq(key, "DRIVER")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_DRIVER, op, value, NULL);
+ } else if (streq(key, "ATTR")) {
+ if (isempty(attr))
+ return log_token_invalid_op(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (IN_SET(op, OP_ADD, OP_ASSIGN_FINAL)) {
+ log_token_warning(rules, "%s key takes '==', '!=', or '=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
- assert(dev);
- assert(filter);
+ r = rule_line_add_token(rule_line, is_match ? TK_M_ATTR : TK_A_ATTR, op, value, attr);
+ } else if (streq(key, "SYSCTL")) {
+ if (isempty(attr))
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (IN_SET(op, OP_ADD, OP_ASSIGN_FINAL)) {
+ log_token_warning(rules, "%s key takes '==', '!=', or '=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
- r = sd_device_get_parent(dev, &parent);
- if (r < 0)
- return r;
+ r = rule_line_add_token(rule_line, is_match ? TK_M_SYSCTL : TK_A_SYSCTL, op, value, attr);
+ } else if (streq(key, "KERNELS")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_PARENTS_KERNEL, op, value, NULL);
+ } else if (streq(key, "SUBSYSTEMS")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_PARENTS_SUBSYSTEM, op, value, NULL);
+ } else if (streq(key, "DRIVERS")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_PARENTS_DRIVER, op, value, NULL);
+ } else if (streq(key, "ATTRS")) {
+ if (isempty(attr))
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ if (startswith(attr, "device/"))
+ log_token_warning(rules, "'device' link may not be available in future kernels; please fix it.");
+ if (strstr(attr, "../"))
+ log_token_warning(rules, "Direct reference to parent sysfs directory, may break in future kernels; please fix it.");
+
+ r = rule_line_add_token(rule_line, TK_M_PARENTS_ATTR, op, value, attr);
+ } else if (streq(key, "TAGS")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_PARENTS_TAG, op, value, NULL);
+ } else if (streq(key, "TEST")) {
+ mode_t mode = MODE_INVALID;
+
+ if (!isempty(attr)) {
+ r = parse_mode(attr, &mode);
+ if (r < 0)
+ return log_token_error_errno(rules, r, "Failed to parse mode '%s': %m", attr);
+ }
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_TEST, op, value, MODE_TO_PTR(mode));
+ } else if (streq(key, "PROGRAM")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (!is_match) {
+ if (op == OP_ASSIGN)
+ log_token_debug(rules, "Operator '=' is specified to %s key, assuming '=='.", key);
+ else
+ log_token_warning(rules, "%s key takes '==' or '!=' operator, assuming '==', but please fix it.", key);
+ op = OP_MATCH;
+ }
- FOREACH_DEVICE_PROPERTY(parent, key, val)
- if (fnmatch(filter, key, 0) == 0)
- device_add_property(dev, key, val);
- return 0;
-}
+ r = rule_line_add_token(rule_line, TK_M_PROGRAM, op, value, NULL);
+ } else if (streq(key, "IMPORT")) {
+ if (isempty(attr))
+ return log_token_invalid_attr(rules, key);
+ if (op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (!is_match) {
+ if (op == OP_ASSIGN)
+ log_token_debug(rules, "Operator '=' is specified to %s key, assuming '=='.", key);
+ else
+ log_token_warning(rules, "%s key takes '==' or '!=' operator, assuming '==', but please fix it.", key);
+ op = OP_MATCH;
+ }
-static void attr_subst_subdir(char *attr, size_t len) {
- const char *pos, *tail, *path;
- _cleanup_closedir_ DIR *dir = NULL;
- struct dirent *dent;
+ if (streq(attr, "file"))
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_FILE, op, value, NULL);
+ else if (streq(attr, "program")) {
+ UdevBuiltinCommand cmd;
- pos = strstr(attr, "/*/");
- if (!pos)
- return;
+ cmd = udev_builtin_lookup(value);
+ if (cmd >= 0) {
+ log_token_debug(rules,"Found builtin command '%s' for %s, replacing attribute", value, key);
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd));
+ } else
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_PROGRAM, op, value, NULL);
+ } else if (streq(attr, "builtin")) {
+ UdevBuiltinCommand cmd;
+
+ cmd = udev_builtin_lookup(value);
+ if (cmd < 0)
+ return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
+ "Unknown builtin command: %s", value);
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd));
+ } else if (streq(attr, "db"))
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_DB, op, value, NULL);
+ else if (streq(attr, "cmdline"))
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_CMDLINE, op, value, NULL);
+ else if (streq(attr, "parent"))
+ r = rule_line_add_token(rule_line, TK_M_IMPORT_PARENT, op, value, NULL);
+ else
+ return log_token_invalid_attr(rules, key);
+ } else if (streq(key, "RESULT")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (!is_match)
+ return log_token_invalid_op(rules, key);
+
+ r = rule_line_add_token(rule_line, TK_M_RESULT, op, value, NULL);
+ } else if (streq(key, "OPTIONS")) {
+ char *tmp;
+
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (is_match || op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ADD) {
+ log_token_debug(rules, "Operator '+=' is specified to %s key, assuming '='.", key);
+ op = OP_ASSIGN;
+ }
- tail = pos + 2;
- path = strndupa(attr, pos - attr + 1); /* include slash at end */
- dir = opendir(path);
- if (!dir)
- return;
+ if (streq(value, "string_escape=none"))
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_STRING_ESCAPE_NONE, op, NULL, NULL);
+ else if (streq(value, "string_escape=replace"))
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_STRING_ESCAPE_REPLACE, op, NULL, NULL);
+ else if (streq(value, "db_persist"))
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_DB_PERSIST, op, NULL, NULL);
+ else if (streq(value, "watch"))
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_INOTIFY_WATCH, op, NULL, INT_TO_PTR(1));
+ else if (streq(value, "nowatch"))
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_INOTIFY_WATCH, op, NULL, INT_TO_PTR(0));
+ else if ((tmp = startswith(value, "static_node=")))
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_STATIC_NODE, op, tmp, NULL);
+ else if ((tmp = startswith(value, "link_priority="))) {
+ int prio;
+
+ r = safe_atoi(tmp, &prio);
+ if (r < 0)
+ return log_token_error_errno(rules, r, "Failed to parse link priority '%s': %m", tmp);
+ r = rule_line_add_token(rule_line, TK_A_OPTIONS_DEVLINK_PRIORITY, op, NULL, INT_TO_PTR(prio));
+ } else {
+ log_token_warning(rules, "Invalid value for OPTIONS key, ignoring: '%s'", value);
+ return 0;
+ }
+ } else if (streq(key, "OWNER")) {
+ uid_t uid;
- FOREACH_DIRENT_ALL(dent, dir, break)
- if (dent->d_name[0] != '.') {
- char n[strlen(dent->d_name) + strlen(tail) + 1];
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (is_match || op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ADD) {
+ log_token_warning(rules, "%s key takes '=' or ':=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
- strscpyl(n, sizeof n, dent->d_name, tail, NULL);
- if (faccessat(dirfd(dir), n, F_OK, 0) == 0) {
- strscpyl(attr, len, path, n, NULL);
- break;
- }
+ if (parse_uid(value, &uid) >= 0)
+ r = rule_line_add_token(rule_line, TK_A_OWNER_ID, op, NULL, UID_TO_PTR(uid));
+ else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY &&
+ rule_get_substitution_type(value) == SUBST_TYPE_PLAIN) {
+ r = rule_resolve_user(rules, value, &uid);
+ if (r < 0)
+ return log_token_error_errno(rules, r, "Failed to resolve user name '%s': %m", value);
+
+ r = rule_line_add_token(rule_line, TK_A_OWNER_ID, op, NULL, UID_TO_PTR(uid));
+ } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER)
+ r = rule_line_add_token(rule_line, TK_A_OWNER, op, value, NULL);
+ else {
+ log_token_debug(rules, "Resolving user name is disabled, ignoring %s=%s", key, value);
+ return 0;
+ }
+ } else if (streq(key, "GROUP")) {
+ gid_t gid;
+
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (is_match || op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ADD) {
+ log_token_warning(rules, "%s key takes '=' or ':=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
+
+ if (parse_gid(value, &gid) >= 0)
+ r = rule_line_add_token(rule_line, TK_A_GROUP_ID, op, NULL, GID_TO_PTR(gid));
+ else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY &&
+ rule_get_substitution_type(value) == SUBST_TYPE_PLAIN) {
+ r = rule_resolve_group(rules, value, &gid);
+ if (r < 0)
+ return log_token_error_errno(rules, r, "Failed to resolve group name '%s': %m", value);
+
+ r = rule_line_add_token(rule_line, TK_A_GROUP_ID, op, NULL, GID_TO_PTR(gid));
+ } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER)
+ r = rule_line_add_token(rule_line, TK_A_GROUP, op, value, NULL);
+ else {
+ log_token_debug(rules, "Resolving group name is disabled, ignoring %s=%s", key, value);
+ return 0;
+ }
+ } else if (streq(key, "MODE")) {
+ mode_t mode;
+
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (is_match || op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ADD) {
+ log_token_warning(rules, "%s key takes '=' or ':=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
+
+ if (parse_mode(value, &mode) >= 0)
+ r = rule_line_add_token(rule_line, TK_A_MODE_ID, op, NULL, MODE_TO_PTR(mode));
+ else
+ r = rule_line_add_token(rule_line, TK_A_MODE, op, value, NULL);
+ } else if (streq(key, "SECLABEL")) {
+ if (isempty(attr))
+ return log_token_invalid_attr(rules, key);
+ if (is_match || op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (op == OP_ASSIGN_FINAL) {
+ log_token_warning(rules, "%s key takes '=' or '+=' operator, assuming '=', but please fix it.", key);
+ op = OP_ASSIGN;
+ }
+
+ r = rule_line_add_token(rule_line, TK_A_SECLABEL, op, value, NULL);
+ } else if (streq(key, "RUN")) {
+ if (is_match || op == OP_REMOVE)
+ return log_token_invalid_op(rules, key);
+ if (!attr || streq(attr, "program"))
+ r = rule_line_add_token(rule_line, TK_A_RUN_PROGRAM, op, value, NULL);
+ else if (streq(attr, "builtin")) {
+ UdevBuiltinCommand cmd;
+
+ cmd = udev_builtin_lookup(value);
+ if (cmd < 0)
+ return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
+ "Unknown builtin command '%s', ignoring", value);
+ r = rule_line_add_token(rule_line, TK_A_RUN_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd));
+ } else
+ return log_token_invalid_attr(rules, key);
+ } else if (streq(key, "GOTO")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (op != OP_ASSIGN)
+ return log_token_invalid_op(rules, key);
+ if (FLAGS_SET(rule_line->type, LINE_HAS_GOTO)) {
+ log_token_warning(rules, "Contains multiple GOTO key, ignoring GOTO=\"%s\".", value);
+ return 0;
}
+
+ rule_line->goto_label = value;
+ SET_FLAG(rule_line->type, LINE_HAS_GOTO, true);
+ return 1;
+ } else if (streq(key, "LABEL")) {
+ if (attr)
+ return log_token_invalid_attr(rules, key);
+ if (op != OP_ASSIGN)
+ return log_token_invalid_op(rules, key);
+
+ rule_line->label = value;
+ SET_FLAG(rule_line->type, LINE_HAS_LABEL, true);
+ return 1;
+ } else
+ return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL), "Invalid key '%s'", key);
+ if (r < 0)
+ return log_oom();
+
+ return 1;
}
-static int get_key(char **line, char **key, enum operation_type *op, char **value) {
- char *linepos;
- char *temp;
- size_t i, j;
+static UdevRuleOperatorType parse_operator(const char *op) {
+ assert(op);
+
+ if (startswith(op, "=="))
+ return OP_MATCH;
+ if (startswith(op, "!="))
+ return OP_NOMATCH;
+ if (startswith(op, "+="))
+ return OP_ADD;
+ if (startswith(op, "-="))
+ return OP_REMOVE;
+ if (startswith(op, "="))
+ return OP_ASSIGN;
+ if (startswith(op, ":="))
+ return OP_ASSIGN_FINAL;
+
+ return _OP_TYPE_INVALID;
+}
- linepos = *line;
- if (!linepos || linepos[0] == '\0')
- return -EINVAL;
+static int parse_line(char **line, char **ret_key, char **ret_attr, UdevRuleOperatorType *ret_op, char **ret_value) {
+ char *key_begin, *key_end, *attr, *tmp, *value, *i, *j;
+ UdevRuleOperatorType op;
- /* skip whitespace */
- while (isspace(linepos[0]) || linepos[0] == ',')
- linepos++;
+ assert(line);
+ assert(*line);
+ assert(ret_key);
+ assert(ret_op);
+ assert(ret_value);
- /* get the key */
- if (linepos[0] == '\0')
- return -EINVAL;
- *key = linepos;
+ key_begin = skip_leading_chars(*line, WHITESPACE ",");
- for (;;) {
- linepos++;
- if (linepos[0] == '\0')
+ if (isempty(key_begin))
+ return 0;
+
+ for (key_end = key_begin; ; key_end++) {
+ if (key_end[0] == '\0')
return -EINVAL;
- if (isspace(linepos[0]))
+ if (strchr(WHITESPACE "={", key_end[0]))
break;
- if (linepos[0] == '=')
+ if (strchr("+-!:", key_end[0]) && key_end[1] == '=')
break;
- if (IN_SET(linepos[0], '+', '-', '!', ':'))
- if (linepos[1] == '=')
- break;
+ }
+ if (key_end[0] == '{') {
+ attr = key_end + 1;
+ tmp = strchr(attr, '}');
+ if (!tmp)
+ return -EINVAL;
+ *tmp++ = '\0';
+ } else {
+ attr = NULL;
+ tmp = key_end;
}
- /* remember end of key */
- temp = linepos;
-
- /* skip whitespace after key */
- while (isspace(linepos[0]))
- linepos++;
- if (linepos[0] == '\0')
- return -EINVAL;
-
- /* get operation type */
- if (linepos[0] == '=' && linepos[1] == '=') {
- *op = OP_MATCH;
- linepos += 2;
- } else if (linepos[0] == '!' && linepos[1] == '=') {
- *op = OP_NOMATCH;
- linepos += 2;
- } else if (linepos[0] == '+' && linepos[1] == '=') {
- *op = OP_ADD;
- linepos += 2;
- } else if (linepos[0] == '-' && linepos[1] == '=') {
- *op = OP_REMOVE;
- linepos += 2;
- } else if (linepos[0] == '=') {
- *op = OP_ASSIGN;
- linepos++;
- } else if (linepos[0] == ':' && linepos[1] == '=') {
- *op = OP_ASSIGN_FINAL;
- linepos += 2;
- } else
+ tmp = skip_leading_chars(tmp, NULL);
+ op = parse_operator(tmp);
+ if (op < 0)
return -EINVAL;
- /* terminate key */
- temp[0] = '\0';
+ key_end[0] = '\0';
- /* skip whitespace after operator */
- while (isspace(linepos[0]))
- linepos++;
- if (linepos[0] == '\0')
- return -EINVAL;
+ tmp += op == OP_ASSIGN ? 1 : 2;
+ value = skip_leading_chars(tmp, NULL);
- /* get the value */
- if (linepos[0] == '"')
- linepos++;
- else
+ /* value must be double quotated */
+ if (value[0] != '"')
return -EINVAL;
- *value = linepos;
-
- /* terminate */
- for (i = 0, j = 0; ; i++, j++) {
+ value++;
- if (linepos[i] == '"')
+ /* unescape double quotation '\"' -> '"' */
+ for (i = j = value; ; i++, j++) {
+ if (*i == '"')
break;
-
- if (linepos[i] == '\0')
+ if (*i == '\0')
return -EINVAL;
+ if (i[0] == '\\' && i[1] == '"')
+ i++;
+ *j = *i;
+ }
+ j[0] = '\0';
+
+ *line = i+1;
+ *ret_key = key_begin;
+ *ret_attr = attr;
+ *ret_op = op;
+ *ret_value = value;
+ return 1;
+}
- /* double quotes can be escaped */
- if (linepos[i] == '\\')
- if (linepos[i+1] == '"')
- i++;
+static void sort_tokens(UdevRuleLine *rule_line) {
+ UdevRuleToken *head_old;
- linepos[j] = linepos[i];
- }
- linepos[j] = '\0';
+ assert(rule_line);
- /* move line to next key */
- *line = linepos + i + 1;
- return 0;
-}
+ head_old = TAKE_PTR(rule_line->tokens);
+ rule_line->current_token = NULL;
-/* extract possible KEY{attr} */
-static const char *get_key_attribute(char *str) {
- char *pos;
- char *attr;
-
- attr = strchr(str, '{');
- if (attr) {
- attr++;
- pos = strchr(attr, '}');
- if (!pos) {
- log_error("Missing closing brace for format");
- return NULL;
- }
- pos[0] = '\0';
- return attr;
+ while (!LIST_IS_EMPTY(head_old)) {
+ UdevRuleToken *t, *min_token = NULL;
+
+ LIST_FOREACH(tokens, t, head_old)
+ if (!min_token || min_token->type > t->type)
+ min_token = t;
+
+ LIST_REMOVE(tokens, head_old, min_token);
+ rule_line_append_token(rule_line, min_token);
}
- return NULL;
}
-static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
- enum operation_type op,
- const char *value, const void *data) {
- struct token *token = rule_tmp->token + rule_tmp->token_cur;
- const char *attr = NULL;
+static int rule_add_line(UdevRules *rules, const char *line_str, unsigned line_nr) {
+ _cleanup_(udev_rule_line_freep) UdevRuleLine *rule_line = NULL;
+ _cleanup_free_ char *line = NULL;
+ UdevRuleFile *rule_file;
+ char *p;
+ int r;
- if (rule_tmp->token_cur >= ELEMENTSOF(rule_tmp->token))
- return -E2BIG;
+ assert(rules);
+ assert(rules->current_file);
+ assert(line_str);
- memzero(token, sizeof(struct token));
+ rule_file = rules->current_file;
- switch (type) {
- case TK_M_ACTION:
- case TK_M_DEVPATH:
- case TK_M_KERNEL:
- case TK_M_SUBSYSTEM:
- case TK_M_DRIVER:
- case TK_M_WAITFOR:
- case TK_M_DEVLINK:
- case TK_M_NAME:
- case TK_M_KERNELS:
- case TK_M_SUBSYSTEMS:
- case TK_M_DRIVERS:
- case TK_M_TAGS:
- case TK_M_PROGRAM:
- case TK_M_IMPORT_FILE:
- case TK_M_IMPORT_PROG:
- case TK_M_IMPORT_DB:
- case TK_M_IMPORT_CMDLINE:
- case TK_M_IMPORT_PARENT:
- case TK_M_RESULT:
- case TK_A_OWNER:
- case TK_A_GROUP:
- case TK_A_MODE:
- case TK_A_DEVLINK:
- case TK_A_NAME:
- case TK_A_GOTO:
- case TK_M_TAG:
- case TK_A_TAG:
- case TK_A_STATIC_NODE:
- token->key.value_off = rules_add_string(rule_tmp->rules, value);
- break;
- case TK_M_IMPORT_BUILTIN:
- token->key.value_off = rules_add_string(rule_tmp->rules, value);
- token->key.builtin_cmd = *(enum udev_builtin_cmd *)data;
- break;
- case TK_M_ENV:
- case TK_M_ATTR:
- case TK_M_SYSCTL:
- case TK_M_ATTRS:
- case TK_A_ATTR:
- case TK_A_SYSCTL:
- case TK_A_ENV:
- case TK_A_SECLABEL:
- attr = data;
- token->key.value_off = rules_add_string(rule_tmp->rules, value);
- token->key.attr_off = rules_add_string(rule_tmp->rules, attr);
- break;
- case TK_M_TEST:
- token->key.value_off = rules_add_string(rule_tmp->rules, value);
- if (data)
- token->key.mode = *(mode_t *)data;
- break;
- case TK_A_STRING_ESCAPE_NONE:
- case TK_A_STRING_ESCAPE_REPLACE:
- case TK_A_DB_PERSIST:
- break;
- case TK_A_RUN_BUILTIN:
- case TK_A_RUN_PROGRAM:
- token->key.builtin_cmd = *(enum udev_builtin_cmd *)data;
- token->key.value_off = rules_add_string(rule_tmp->rules, value);
- break;
- case TK_A_INOTIFY_WATCH:
- case TK_A_DEVLINK_PRIO:
- token->key.devlink_prio = *(int *)data;
- break;
- case TK_A_OWNER_ID:
- token->key.uid = *(uid_t *)data;
- break;
- case TK_A_GROUP_ID:
- token->key.gid = *(gid_t *)data;
- break;
- case TK_A_MODE_ID:
- token->key.mode = *(mode_t *)data;
- break;
- case TK_RULE:
- case TK_M_PARENTS_MIN:
- case TK_M_PARENTS_MAX:
- case TK_M_MAX:
- case TK_END:
- case TK_UNSET:
- assert_not_reached("wrong type");
- }
+ if (isempty(line_str))
+ return 0;
- if (value && type < TK_M_MAX) {
- /* check if we need to split or call fnmatch() while matching rules */
- enum string_glob_type glob;
- bool has_split, has_glob;
-
- has_split = strchr(value, '|');
- has_glob = string_is_glob(value);
- if (has_split && has_glob)
- glob = GL_SPLIT_GLOB;
- else if (has_split)
- glob = GL_SPLIT;
- else if (has_glob) {
- if (streq(value, "?*"))
- glob = GL_SOMETHING;
- else
- glob = GL_GLOB;
- } else
- glob = GL_PLAIN;
+ line = strdup(line_str);
+ if (!line)
+ return log_oom();
- token->key.glob = glob;
- }
+ rule_line = new(UdevRuleLine, 1);
+ if (!rule_line)
+ return log_oom();
- if (value && type > TK_M_MAX) {
- /* check if assigned value has substitution chars */
- if (value[0] == '[')
- token->key.subst = SB_SUBSYS;
- else if (strchr(value, '%') || strchr(value, '$'))
- token->key.subst = SB_FORMAT;
- else
- token->key.subst = SB_NONE;
- }
+ *rule_line = (UdevRuleLine) {
+ .line = TAKE_PTR(line),
+ .line_number = line_nr,
+ .rule_file = rule_file,
+ };
- if (attr) {
- /* check if property/attribute name has substitution chars */
- if (attr[0] == '[')
- token->key.attrsubst = SB_SUBSYS;
- else if (strchr(attr, '%') || strchr(attr, '$'))
- token->key.attrsubst = SB_FORMAT;
- else
- token->key.attrsubst = SB_NONE;
- }
-
- token->key.type = type;
- token->key.op = op;
- rule_tmp->token_cur++;
-
- return 0;
-}
+ if (rule_file->current_line)
+ LIST_APPEND(rule_lines, rule_file->current_line, rule_line);
+ else
+ LIST_APPEND(rule_lines, rule_file->rule_lines, rule_line);
-static int sort_token(UdevRules *rules, struct rule_tmp *rule_tmp) {
- size_t i;
- size_t start = 0;
- size_t end = rule_tmp->token_cur;
- int r;
+ rule_file->current_line = rule_line;
- for (i = 0; i < rule_tmp->token_cur; i++) {
- enum token_type next_val = TK_UNSET;
- size_t next_idx = 0;
- size_t j;
+ for (p = rule_line->line; !isempty(p); ) {
+ char *key, *attr, *value;
+ UdevRuleOperatorType op;
- /* find smallest value */
- for (j = start; j < end; j++) {
- if (rule_tmp->token[j].type == TK_UNSET)
- continue;
- if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
- next_val = rule_tmp->token[j].type;
- next_idx = j;
- }
- }
+ r = parse_line(&p, &key, &attr, &op, &value);
+ if (r < 0)
+ return log_token_error_errno(rules, r, "Invalid key/value pair, ignoring.");
+ if (r == 0)
+ break;
- /* add token and mark done */
- r = add_token(rules, &rule_tmp->token[next_idx]);
+ r = parse_token(rules, key, attr, op, value);
if (r < 0)
return r;
- rule_tmp->token[next_idx].type = TK_UNSET;
+ }
- /* shrink range */
- if (next_idx == start)
- start++;
- if (next_idx+1 == end)
- end--;
+ if (rule_line->type == 0) {
+ log_token_warning(rules, "The line takes no effect, ignoring.");
+ return 0;
}
+
+ sort_tokens(rule_line);
+ TAKE_PTR(rule_line);
return 0;
}
-#define LOG_RULE_FULL(level, fmt, ...) log_full(level, "%s:%u: " fmt, filename, lineno, ##__VA_ARGS__)
-#define LOG_RULE_ERROR(fmt, ...) LOG_RULE_FULL(LOG_ERR, fmt, ##__VA_ARGS__)
-#define LOG_RULE_WARNING(fmt, ...) LOG_RULE_FULL(LOG_WARNING, fmt, ##__VA_ARGS__)
-#define LOG_RULE_DEBUG(fmt, ...) LOG_RULE_FULL(LOG_DEBUG, fmt, ##__VA_ARGS__)
-#define LOG_AND_RETURN(fmt, ...) { LOG_RULE_ERROR(fmt, __VA_ARGS__); return; }
-#define LOG_AND_RETURN_ADD_KEY LOG_AND_RETURN("Temporary rule array too small, aborting event processing with %zu items", rule_tmp.token_cur);
-
-static void add_rule(UdevRules *rules, char *line,
- const char *filename, unsigned filename_off, unsigned lineno) {
- char *linepos;
- const char *attr;
- struct rule_tmp rule_tmp = {
- .rules = rules,
- .rule.type = TK_RULE,
- };
- int r;
-
- /* the offset in the rule is limited to unsigned short */
- if (filename_off < USHRT_MAX)
- rule_tmp.rule.rule.filename_off = filename_off;
- rule_tmp.rule.rule.filename_line = lineno;
-
- linepos = line;
- for (;;) {
- char *key;
- char *value;
- enum operation_type op;
-
- if (get_key(&linepos, &key, &op, &value) < 0) {
- /* Avoid erroring on trailing whitespace. This is probably rare
- * so save the work for the error case instead of always trying
- * to strip the trailing whitespace with strstrip(). */
- while (isblank(*linepos))
- linepos++;
-
- /* If we aren't at the end of the line, this is a parsing error.
- * Make a best effort to describe where the problem is. */
- if (!strchr(NEWLINE, *linepos)) {
- char buf[2] = {*linepos};
- _cleanup_free_ char *tmp;
-
- tmp = cescape(buf);
- LOG_RULE_ERROR("Invalid key/value pair, starting at character %tu ('%s')", linepos - line + 1, tmp);
- if (*linepos == '#')
- LOG_RULE_ERROR("Hint: comments can only start at beginning of line");
- }
- break;
- }
-
- if (streq(key, "ACTION")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "DEVPATH")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "KERNEL")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "SUBSYSTEM")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- /* bus, class, subsystem events should all be the same */
- if (STR_IN_SET(value, "subsystem", "bus", "class")) {
- if (!streq(value, "subsystem"))
- LOG_RULE_WARNING("'%s' must be specified as 'subsystem'; please fix", value);
-
- r = rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
- } else
- r = rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "DRIVER")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "ATTR{")) {
- attr = get_key_attribute(key + STRLEN("ATTR"));
- if (!attr)
- LOG_AND_RETURN("Failed to parse %s attribute", "ATTR");
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", "ATTR");
-
- if (op < OP_MATCH_MAX)
- r = rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
- else
- r = rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "SYSCTL{")) {
- attr = get_key_attribute(key + STRLEN("SYSCTL"));
- if (!attr)
- LOG_AND_RETURN("Failed to parse %s attribute", "ATTR");
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", "ATTR");
-
- if (op < OP_MATCH_MAX)
- r = rule_add_key(&rule_tmp, TK_M_SYSCTL, op, value, attr);
- else
- r = rule_add_key(&rule_tmp, TK_A_SYSCTL, op, value, attr);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "SECLABEL{")) {
- attr = get_key_attribute(key + STRLEN("SECLABEL"));
- if (!attr)
- LOG_AND_RETURN("Failed to parse %s attribute", "SECLABEL");
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", "SECLABEL");
-
- if (rule_add_key(&rule_tmp, TK_A_SECLABEL, op, value, attr) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "KERNELS")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "SUBSYSTEMS")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "DRIVERS")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "ATTRS{")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", "ATTRS");
-
- attr = get_key_attribute(key + STRLEN("ATTRS"));
- if (!attr)
- LOG_AND_RETURN("Failed to parse %s attribute", "ATTRS");
-
- if (startswith(attr, "device/"))
- LOG_RULE_WARNING("'device' link may not be available in future kernels; please fix");
- if (strstr(attr, "../"))
- LOG_RULE_WARNING("Direct reference to parent sysfs directory, may break in future kernels; please fix");
- if (rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "TAGS")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "ENV{")) {
- attr = get_key_attribute(key + STRLEN("ENV"));
- if (!attr)
- LOG_AND_RETURN("Failed to parse %s attribute", "ENV");
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", "ENV");
-
- if (op < OP_MATCH_MAX)
- r = rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr);
- else {
- if (STR_IN_SET(attr,
- "ACTION",
- "SEQNUM",
- "SUBSYSTEM",
- "DEVTYPE",
- "MAJOR",
- "MINOR",
- "DRIVER",
- "IFINDEX",
- "DEVNAME",
- "DEVLINKS",
- "DEVPATH",
- "TAGS"))
- LOG_AND_RETURN("Invalid ENV attribute, '%s' cannot be set", attr);
-
- r = rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr);
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "TAG")) {
- if (op < OP_MATCH_MAX)
- r = rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL);
- else
- r = rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "PROGRAM")) {
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "RESULT")) {
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "IMPORT")) {
- attr = get_key_attribute(key + STRLEN("IMPORT"));
- if (!attr) {
- LOG_RULE_WARNING("Ignoring IMPORT{} with missing type");
- continue;
- }
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", "IMPORT");
-
- if (streq(attr, "program")) {
- /* find known built-in command */
- if (value[0] != '/') {
- const enum udev_builtin_cmd cmd = udev_builtin_lookup(value);
-
- if (cmd >= 0) {
- LOG_RULE_DEBUG("IMPORT found builtin '%s', replacing", value);
- if (rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd) < 0)
- LOG_AND_RETURN_ADD_KEY;
- continue;
- }
- }
- r = rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
- } else if (streq(attr, "builtin")) {
- const enum udev_builtin_cmd cmd = udev_builtin_lookup(value);
-
- if (cmd < 0) {
- LOG_RULE_WARNING("IMPORT{builtin} '%s' unknown, ignoring", value);
- continue;
- } else
- r = rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd);
- } else if (streq(attr, "file"))
- r = rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
- else if (streq(attr, "db"))
- r = rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
- else if (streq(attr, "cmdline"))
- r = rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL);
- else if (streq(attr, "parent"))
- r = rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
- else {
- LOG_RULE_ERROR("Ignoring unknown %s{} type '%s'", "IMPORT", attr);
- continue;
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "TEST")) {
- mode_t mode = 0;
-
- if (op > OP_MATCH_MAX)
- LOG_AND_RETURN("Invalid %s operation", "TEST");
-
- attr = get_key_attribute(key + STRLEN("TEST"));
- if (attr) {
- mode = strtol(attr, NULL, 8);
- r = rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
- } else
- r = rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "RUN")) {
- attr = get_key_attribute(key + STRLEN("RUN"));
- if (!attr)
- attr = "program";
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", "RUN");
-
- if (streq(attr, "builtin")) {
- const enum udev_builtin_cmd cmd = udev_builtin_lookup(value);
-
- if (cmd < 0) {
- LOG_RULE_ERROR("RUN{builtin}: '%s' unknown, ignoring", value);
- continue;
- } else
- r = rule_add_key(&rule_tmp, TK_A_RUN_BUILTIN, op, value, &cmd);
- } else if (streq(attr, "program")) {
- const enum udev_builtin_cmd cmd = _UDEV_BUILTIN_MAX;
-
- r = rule_add_key(&rule_tmp, TK_A_RUN_PROGRAM, op, value, &cmd);
- } else {
- LOG_RULE_ERROR("Ignoring unknown %s{} type '%s'", "RUN", attr);
- continue;
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (streq(key, "LABEL")) {
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- rule_tmp.rule.rule.label_off = rules_add_string(rules, value);
-
- } else if (streq(key, "GOTO")) {
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- } else if (startswith(key, "NAME")) {
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (op < OP_MATCH_MAX)
- r = rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
- else {
- if (streq(value, "%k")) {
- LOG_RULE_WARNING("NAME=\"%%k\" is ignored, because it breaks kernel supplied names; please remove");
- continue;
- }
- if (isempty(value)) {
- LOG_RULE_DEBUG("NAME=\"\" is ignored, because udev will not delete any device nodes; please remove");
- continue;
- }
- r = rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
- rule_tmp.rule.rule.can_set_name = true;
-
- } else if (streq(key, "SYMLINK")) {
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (op < OP_MATCH_MAX)
- r = rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
- else
- r = rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
- rule_tmp.rule.rule.can_set_name = true;
-
- } else if (streq(key, "OWNER")) {
- uid_t uid;
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (parse_uid(value, &uid) >= 0)
- r = rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
- else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY && !strchr("$%", value[0])) {
- uid = add_uid(rules, value);
- r = rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
- } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER)
- r = rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
- else {
- LOG_RULE_DEBUG("Resolving user name is disabled, ignoring %s=%s", key, value);
- continue;
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- rule_tmp.rule.rule.can_set_name = true;
-
- } else if (streq(key, "GROUP")) {
- gid_t gid;
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- if (parse_gid(value, &gid) >= 0)
- r = rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
- else if ((rules->resolve_name_timing == RESOLVE_NAME_EARLY) && !strchr("$%", value[0])) {
- gid = add_gid(rules, value);
- r = rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
- } else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER)
- r = rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
- else {
- LOG_RULE_DEBUG("Resolving group name is disabled, ignoring %s=%s", key, value);
- continue;
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- rule_tmp.rule.rule.can_set_name = true;
-
- } else if (streq(key, "MODE")) {
- mode_t mode;
- char *endptr;
-
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- mode = strtol(value, &endptr, 8);
- if (endptr[0] == '\0')
- r = rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
- else
- r = rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- rule_tmp.rule.rule.can_set_name = true;
+static void rule_resolve_goto(UdevRuleFile *rule_file) {
+ UdevRuleLine *line, *line_next, *i;
- } else if (streq(key, "OPTIONS")) {
- const char *pos;
+ assert(rule_file);
- if (op == OP_REMOVE)
- LOG_AND_RETURN("Invalid %s operation", key);
-
- pos = strstr(value, "link_priority=");
- if (pos) {
- int prio = atoi(pos + STRLEN("link_priority="));
+ /* link GOTOs to LABEL rules in this file to be able to fast-forward */
+ LIST_FOREACH_SAFE(rule_lines, line, line_next, rule_file->rule_lines) {
+ if (!FLAGS_SET(line->type, LINE_HAS_GOTO))
+ continue;
- if (rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio) < 0)
- LOG_AND_RETURN_ADD_KEY;
+ LIST_FOREACH_AFTER(rule_lines, i, line)
+ if (streq_ptr(i->label, line->goto_label)) {
+ line->goto_line = i;
+ break;
}
- pos = strstr(value, "string_escape=");
- if (pos) {
- pos += STRLEN("string_escape=");
- if (startswith(pos, "none"))
- r = rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL);
- else if (startswith(pos, "replace"))
- r = rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL);
- else {
- LOG_RULE_ERROR("OPTIONS: unknown string_escape mode '%s', ignoring", pos);
- r = 0;
- }
- if (r < 0)
- LOG_AND_RETURN_ADD_KEY;
- }
+ if (!line->goto_line) {
+ log_error("%s:%u: GOTO=\"%s\" has no matching label, ignoring",
+ rule_file->filename, line->line_number, line->goto_label);
- pos = strstr(value, "db_persist");
- if (pos)
- if (rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
-
- pos = strstr(value, "nowatch");
- if (pos) {
- static const int zero = 0;
- if (rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &zero) < 0)
- LOG_AND_RETURN_ADD_KEY;
- } else {
- static const int one = 1;
- pos = strstr(value, "watch");
- if (pos)
- if (rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &one) < 0)
- LOG_AND_RETURN_ADD_KEY;
- }
+ SET_FLAG(line->type, LINE_HAS_GOTO, false);
+ line->goto_label = NULL;
- pos = strstr(value, "static_node=");
- if (pos) {
- pos += STRLEN("static_node=");
- if (rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, pos, NULL) < 0)
- LOG_AND_RETURN_ADD_KEY;
- rule_tmp.rule.rule.has_static_node = true;
+ if ((line->type & ~LINE_HAS_LABEL) == 0) {
+ log_notice("%s:%u: The line takes no effect any more, dropping",
+ rule_file->filename, line->line_number);
+ if (line->type == LINE_HAS_LABEL)
+ udev_rule_line_clear_tokens(line);
+ else
+ udev_rule_line_free(line);
}
-
- } else
- LOG_AND_RETURN("Unknown key '%s'", key);
+ }
}
-
- /* add rule token and sort tokens */
- rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur;
- if (add_token(rules, &rule_tmp.rule) < 0 || sort_token(rules, &rule_tmp) < 0)
- LOG_RULE_ERROR("Failed to add rule token");
}
static int parse_file(UdevRules *rules, const char *filename) {
- _cleanup_free_ char *continuation = NULL;
+ _cleanup_free_ char *continuation = NULL, *name = NULL;
_cleanup_fclose_ FILE *f = NULL;
+ UdevRuleFile *rule_file;
bool ignore_line = false;
- size_t first_token, i;
- unsigned filename_off;
- int line_nr = 0, r;
+ unsigned line_nr = 0;
+ int r;
f = fopen(filename, "re");
if (!f) {
if (null_or_empty_fd(fileno(f))) {
log_debug("Skipping empty file: %s", filename);
return 0;
- } else
- log_debug("Reading rules file: %s", filename);
+ }
- first_token = rules->token_cur;
- filename_off = rules_add_string(rules, filename);
+ log_debug("Reading rules file: %s", filename);
+
+ name = strdup(filename);
+ if (!name)
+ return log_oom();
+
+ rule_file = new(UdevRuleFile, 1);
+ if (!rule_file)
+ return log_oom();
+
+ *rule_file = (UdevRuleFile) {
+ .filename = TAKE_PTR(name),
+ };
+
+ if (rules->current_file)
+ LIST_APPEND(rule_files, rules->current_file, rule_file);
+ else
+ LIST_APPEND(rule_files, rules->rule_files, rule_file);
+
+ rules->current_file = rule_file;
for (;;) {
_cleanup_free_ char *buf = NULL;
break;
line_nr++;
- line = buf + strspn(buf, WHITESPACE);
+ line = skip_leading_chars(buf, NULL);
if (line[0] == '#')
continue;
}
if (ignore_line)
- log_error("Line too long '%s':%u, ignored", filename, line_nr);
+ log_error("%s:%u: Line is too long, ignored", filename, line_nr);
else if (len > 0)
- add_rule(rules, line, filename, filename_off, line_nr);
+ (void) rule_add_line(rules, line, line_nr);
continuation = mfree(continuation);
ignore_line = false;
}
- /* link GOTOs to LABEL rules in this file to be able to fast-forward */
- for (i = first_token+1; i < rules->token_cur; i++) {
- if (rules->tokens[i].type == TK_A_GOTO) {
- char *label = rules_str(rules, rules->tokens[i].key.value_off);
- size_t j;
-
- for (j = i+1; j < rules->token_cur; j++) {
- if (rules->tokens[j].type != TK_RULE)
- continue;
- if (rules->tokens[j].rule.label_off == 0)
- continue;
- if (!streq(label, rules_str(rules, rules->tokens[j].rule.label_off)))
- continue;
- rules->tokens[i].key.rule_goto = j;
- break;
- }
- if (rules->tokens[i].key.rule_goto == 0)
- log_error("GOTO '%s' has no matching label in: '%s'", label, filename);
- }
- }
+ rule_resolve_goto(rule_file);
return 0;
}
.resolve_name_timing = resolve_name_timing,
};
- /* init token array and string buffer */
- rules->tokens = new(struct token, PREALLOC_TOKEN);
- if (!rules->tokens)
- return -ENOMEM;
- rules->token_max = PREALLOC_TOKEN;
-
- rules->strbuf = strbuf_new();
- if (!rules->strbuf)
- return -ENOMEM;
-
- udev_rules_check_timestamp(rules);
+ (void) udev_rules_check_timestamp(rules);
r = conf_files_list_strv(&files, ".rules", NULL, 0, RULES_DIRS);
if (r < 0)
return log_error_errno(r, "Failed to enumerate rules files: %m");
- /*
- * The offset value in the rules strct is limited; add all
- * rules file names to the beginning of the string buffer.
- */
STRV_FOREACH(f, files)
- rules_add_string(rules, *f);
+ (void) parse_file(rules, *f);
- STRV_FOREACH(f, files)
- parse_file(rules, *f);
-
- struct token end_token = { .type = TK_END };
- add_token(rules, &end_token);
- log_debug("Rules contain %zu bytes tokens (%zu * %zu bytes), %zu bytes strings",
- rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->strbuf->len);
-
- /* cleanup temporary strbuf data */
- log_debug("%zu strings (%zu bytes), %zu de-duplicated (%zu bytes), %zu trie nodes used",
- rules->strbuf->in_count, rules->strbuf->in_len,
- rules->strbuf->dedup_count, rules->strbuf->dedup_len, rules->strbuf->nodes_count);
- strbuf_complete(rules->strbuf);
-
- /* cleanup uid/gid cache */
- rules->uids = mfree(rules->uids);
- rules->uids_cur = 0;
- rules->uids_max = 0;
- rules->gids = mfree(rules->gids);
- rules->gids_cur = 0;
- rules->gids_max = 0;
-
- dump_rules(rules);
*ret_rules = TAKE_PTR(rules);
return 0;
}
-UdevRules *udev_rules_free(UdevRules *rules) {
- if (!rules)
- return NULL;
- free(rules->tokens);
- strbuf_cleanup(rules->strbuf);
- free(rules->uids);
- free(rules->gids);
- return mfree(rules);
-}
-
bool udev_rules_check_timestamp(UdevRules *rules) {
if (!rules)
return false;
return paths_check_timestamp(RULES_DIRS, &rules->dirs_ts_usec, true);
}
-static bool match_key(UdevRules *rules, struct token *token, const char *val) {
- char *key_value = rules_str(rules, token->key.value_off);
- char *pos;
+static bool token_match_string(UdevRuleToken *token, const char *str) {
+ const char *i, *value;
bool match = false;
- val = strempty(val);
+ assert(token);
+ assert(token->value);
+ assert(token->type < _TK_M_MAX);
- switch (token->key.glob) {
- case GL_PLAIN:
- match = streq(key_value, val);
- break;
- case GL_GLOB:
- match = (fnmatch(key_value, val, 0) == 0);
+ str = strempty(str);
+ value = token->value;
+
+ switch (token->match_type) {
+ case MATCH_TYPE_EMPTY:
+ match = isempty(str);
break;
- case GL_SPLIT:
- {
- const char *s;
- size_t len;
-
- s = rules_str(rules, token->key.value_off);
- len = strlen(val);
- for (;;) {
- const char *next;
-
- next = strchr(s, '|');
- if (next) {
- size_t matchlen = (size_t)(next - s);
-
- match = (matchlen == len && strneq(s, val, matchlen));
- if (match)
- break;
- } else {
- match = streq(s, val);
- break;
- }
- s = &next[1];
+ case MATCH_TYPE_SUBSYSTEM:
+ value = "subsystem\0class\0bus\0";
+ _fallthrough_;
+ case MATCH_TYPE_PLAIN:
+ NULSTR_FOREACH(i, value)
+ if (streq(i, str)) {
+ match = true;
+ break;
}
- break;
- }
- case GL_SPLIT_GLOB:
- {
- char value[UTIL_PATH_SIZE];
-
- strscpy(value, sizeof(value), rules_str(rules, token->key.value_off));
- key_value = value;
- while (key_value) {
- pos = strchr(key_value, '|');
- if (pos) {
- pos[0] = '\0';
- pos = &pos[1];
- }
- match = (fnmatch(key_value, val, 0) == 0);
- if (match)
- break;
- key_value = pos;
+ break;
+ case MATCH_TYPE_GLOB:
+ NULSTR_FOREACH(i, value)
+ if ((fnmatch(i, str, 0) == 0)) {
+ match = true;
+ break;
}
- break;
- }
- case GL_SOMETHING:
- match = (val[0] != '\0');
break;
- case GL_UNSET:
- return false;
+ default:
+ assert_not_reached("Invalid match type");
}
- return token->key.op == (match ? OP_MATCH : OP_NOMATCH);
+ return token->op == (match ? OP_MATCH : OP_NOMATCH);
}
-static bool match_attr(UdevRules *rules, sd_device *dev, UdevEvent *event, struct token *cur) {
+static bool token_match_attr(UdevRuleToken *token, sd_device *dev, UdevEvent *event) {
char nbuf[UTIL_NAME_SIZE], vbuf[UTIL_NAME_SIZE];
const char *name, *value;
- size_t len;
- name = rules_str(rules, cur->key.attr_off);
- switch (cur->key.attrsubst) {
- case SB_FORMAT:
- udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false);
+ assert(token);
+ assert(dev);
+ assert(event);
+
+ name = (const char*) token->data;
+
+ switch (token->attr_subst_type) {
+ case SUBST_TYPE_FORMAT:
+ (void) udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false);
name = nbuf;
_fallthrough_;
- case SB_NONE:
+ case SUBST_TYPE_PLAIN:
if (sd_device_get_sysattr_value(dev, name, &value) < 0)
return false;
break;
- case SB_SUBSYS:
+ case SUBST_TYPE_SUBSYS:
if (util_resolve_subsys_kernel(name, vbuf, sizeof(vbuf), true) < 0)
return false;
value = vbuf;
break;
default:
- return false;
+ assert_not_reached("Invalid attribute substitution type");
}
/* remove trailing whitespace, if not asked to match for it */
- len = strlen(value);
- if (len > 0 && isspace(value[len-1])) {
- const char *key_value;
- size_t klen;
-
- key_value = rules_str(rules, cur->key.value_off);
- klen = strlen(key_value);
- if (klen > 0 && !isspace(key_value[klen-1])) {
- if (value != vbuf) {
- strscpy(vbuf, sizeof(vbuf), value);
- value = vbuf;
- }
- while (len > 0 && isspace(vbuf[--len]))
- vbuf[len] = '\0';
+ if (token->attr_match_remove_trailing_whitespace) {
+ if (value != vbuf) {
+ strscpy(vbuf, sizeof(vbuf), value);
+ value = vbuf;
}
+
+ delete_trailing_chars(vbuf, NULL);
}
- return match_key(rules, cur, value);
+ return token_match_string(token, value);
}
-enum escape_type {
- ESCAPE_UNSET,
- ESCAPE_NONE,
- ESCAPE_REPLACE,
-};
+static int get_property_from_string(char *line, char **ret_key, char **ret_value) {
+ char *key, *val;
+ size_t len;
-int udev_rules_apply_to_event(
- UdevRules *rules,
- UdevEvent *event,
- usec_t timeout_usec,
- Hashmap *properties_list) {
- sd_device *dev = event->dev;
- enum escape_type esc = ESCAPE_UNSET;
- struct token *cur, *rule;
- DeviceAction action;
- const char *val;
- bool can_set_name;
- int r;
+ assert(line);
+ assert(ret_key);
+ assert(ret_value);
+
+ /* find key */
+ key = skip_leading_chars(line, NULL);
- if (!rules->tokens)
+ /* comment or empty line */
+ if (IN_SET(key[0], '#', '\0'))
return 0;
- r = device_get_action(dev, &action);
- if (r < 0)
- return r;
+ /* split key/value */
+ val = strchr(key, '=');
+ if (!val)
+ return -EINVAL;
+ *val++ = '\0';
- can_set_name = (action != DEVICE_ACTION_REMOVE &&
- (sd_device_get_devnum(dev, NULL) >= 0 ||
- sd_device_get_ifindex(dev, NULL) >= 0));
+ key = strstrip(key);
+ if (isempty(key))
+ return -EINVAL;
- /* 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;
- /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
- if (!can_set_name && rule->rule.can_set_name)
- goto nomatch;
- esc = ESCAPE_UNSET;
- break;
- case TK_M_ACTION:
- if (!match_key(rules, cur, device_action_to_string(action)))
- goto nomatch;
- break;
- case TK_M_DEVPATH:
- if (sd_device_get_devpath(dev, &val) < 0)
- goto nomatch;
- if (!match_key(rules, cur, val))
- goto nomatch;
- break;
- case TK_M_KERNEL:
- if (sd_device_get_sysname(dev, &val) < 0)
- goto nomatch;
- if (!match_key(rules, cur, val))
- goto nomatch;
- break;
- case TK_M_DEVLINK: {
- const char *devlink;
- bool match = false;
-
- FOREACH_DEVICE_DEVLINK(dev, devlink)
- if (match_key(rules, cur, devlink + STRLEN("/dev/"))) {
- match = true;
- break;
- }
-
- if (!match)
- goto nomatch;
- break;
- }
- case TK_M_NAME:
- if (!match_key(rules, cur, event->name))
- goto nomatch;
- break;
- case TK_M_ENV: {
- const char *key_name = rules_str(rules, cur->key.attr_off);
+ val = strstrip(val);
+ if (isempty(val))
+ return -EINVAL;
- if (sd_device_get_property_value(dev, key_name, &val) < 0) {
- /* check global properties */
- if (properties_list)
- val = hashmap_get(properties_list, key_name);
- else
- val = NULL;
- }
+ /* unquote */
+ if (IN_SET(val[0], '"', '\'')) {
+ len = strlen(val);
+ if (len == 1 || val[len-1] != val[0])
+ return -EINVAL;
+ val[len-1] = '\0';
+ val++;
+ }
- if (!match_key(rules, cur, strempty(val)))
- goto nomatch;
- break;
- }
- case TK_M_TAG: {
- bool match = false;
- const char *tag;
-
- FOREACH_DEVICE_TAG(dev, tag)
- if (streq(rules_str(rules, cur->key.value_off), tag)) {
- match = true;
- break;
- }
-
- if ((!match && (cur->key.op != OP_NOMATCH)) ||
- (match && (cur->key.op == OP_NOMATCH)))
- goto nomatch;
- break;
- }
- case TK_M_SUBSYSTEM:
- if (sd_device_get_subsystem(dev, &val) < 0)
- goto nomatch;
- if (!match_key(rules, cur, val))
- goto nomatch;
- break;
- case TK_M_DRIVER:
- if (sd_device_get_driver(dev, &val) < 0)
- goto nomatch;
- if (!match_key(rules, cur, val))
- goto nomatch;
- break;
- case TK_M_ATTR:
- if (!match_attr(rules, dev, event, cur))
- goto nomatch;
- break;
- case TK_M_SYSCTL: {
- char filename[UTIL_PATH_SIZE];
- _cleanup_free_ char *value = NULL;
- size_t len;
+ *ret_key = key;
+ *ret_value = val;
+ return 0;
+}
- udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false);
- sysctl_normalize(filename);
- if (sysctl_read(filename, &value) < 0)
- goto nomatch;
+static int import_parent_into_properties(sd_device *dev, const char *filter) {
+ const char *key, *val;
+ sd_device *parent;
+ int r;
- len = strlen(value);
- while (len > 0 && isspace(value[--len]))
- value[len] = '\0';
- if (!match_key(rules, cur, value))
- goto nomatch;
- break;
- }
- case TK_M_KERNELS:
- case TK_M_SUBSYSTEMS:
- case TK_M_DRIVERS:
- case TK_M_ATTRS:
- case TK_M_TAGS: {
- struct token *next;
-
- /* get whole sequence of parent matches */
- next = cur;
- while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX)
- next++;
-
- /* loop over parents */
- event->dev_parent = dev;
- for (;;) {
- struct token *key;
-
- /* loop over sequence of parent match keys */
- for (key = cur; key < next; key++ ) {
- dump_token(rules, key);
- switch(key->type) {
- case TK_M_KERNELS:
- if (sd_device_get_sysname(event->dev_parent, &val) < 0)
- goto try_parent;
- if (!match_key(rules, key, val))
- goto try_parent;
- break;
- case TK_M_SUBSYSTEMS:
- if (sd_device_get_subsystem(event->dev_parent, &val) < 0)
- goto try_parent;
- if (!match_key(rules, key, val))
- goto try_parent;
- break;
- case TK_M_DRIVERS:
- if (sd_device_get_driver(event->dev_parent, &val) < 0)
- goto try_parent;
- if (!match_key(rules, key, val))
- goto try_parent;
- break;
- case TK_M_ATTRS:
- if (!match_attr(rules, event->dev_parent, event, key))
- goto try_parent;
- break;
- case TK_M_TAGS: {
- bool match = sd_device_has_tag(event->dev_parent, rules_str(rules, cur->key.value_off));
-
- if (match && key->key.op == OP_NOMATCH)
- goto try_parent;
- if (!match && key->key.op == OP_MATCH)
- goto try_parent;
- break;
- }
- default:
- goto nomatch;
- }
- }
- break;
+ assert(dev);
+ assert(filter);
- try_parent:
- if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) {
- event->dev_parent = NULL;
- goto nomatch;
- }
- }
- /* move behind our sequence of parent match keys */
- cur = next;
+ r = sd_device_get_parent(dev, &parent);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return r;
+
+ FOREACH_DEVICE_PROPERTY(parent, key, val) {
+ if (fnmatch(filter, key, 0) != 0)
continue;
- }
- case TK_M_TEST: {
- char filename[UTIL_PATH_SIZE];
- struct stat statbuf;
- int match;
-
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), filename, sizeof(filename), false);
- if (util_resolve_subsys_kernel(filename, filename, sizeof(filename), false) < 0) {
- if (filename[0] != '/') {
- char tmp[UTIL_PATH_SIZE];
-
- if (sd_device_get_syspath(dev, &val) < 0)
- goto nomatch;
-
- strscpy(tmp, sizeof(tmp), filename);
- strscpyl(filename, sizeof(filename), val, "/", tmp, NULL);
- }
- }
- attr_subst_subdir(filename, sizeof(filename));
-
- match = (stat(filename, &statbuf) == 0);
- if (match && cur->key.mode > 0)
- match = ((statbuf.st_mode & cur->key.mode) > 0);
- if (match && cur->key.op == OP_NOMATCH)
- goto nomatch;
- if (!match && cur->key.op == OP_MATCH)
- goto nomatch;
- break;
- }
- case TK_M_PROGRAM: {
- char program[UTIL_PATH_SIZE], result[UTIL_LINE_SIZE];
-
- event->program_result = mfree(event->program_result);
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), program, sizeof(program), false);
- log_device_debug(dev, "PROGRAM '%s' %s:%u",
- program,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
-
- if (udev_event_spawn(event, timeout_usec, true, program, result, sizeof(result)) != 0) {
- if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- } else {
- int count;
-
- delete_trailing_chars(result, "\n");
- if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) {
- count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
- if (count > 0)
- log_device_debug(dev, "Replaced %i character(s) from result of '%s'" , count, program);
- }
- event->program_result = strdup(result);
- if (cur->key.op == OP_NOMATCH)
- goto nomatch;
- }
- break;
- }
- case TK_M_IMPORT_FILE: {
- char import[UTIL_PATH_SIZE];
+ r = device_add_property(dev, key, val);
+ if (r < 0)
+ return r;
+ }
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false);
- if (import_file_into_properties(dev, import) < 0)
- if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- break;
- }
- case TK_M_IMPORT_PROG: {
- char import[UTIL_PATH_SIZE];
-
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false);
- log_device_debug(dev, "IMPORT '%s' %s:%u",
- import,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
-
- if (import_program_into_properties(event, timeout_usec, import) < 0)
- if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- break;
- }
- case TK_M_IMPORT_BUILTIN: {
- char command[UTIL_PATH_SIZE];
-
- if (udev_builtin_run_once(cur->key.builtin_cmd)) {
- /* check if we ran already */
- if (event->builtin_run & (1 << cur->key.builtin_cmd)) {
- log_device_debug(dev, "IMPORT builtin skip '%s' %s:%u",
- udev_builtin_name(cur->key.builtin_cmd),
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- /* return the result from earlier run */
- if (event->builtin_ret & (1 << cur->key.builtin_cmd))
- if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- break;
- }
- /* mark as ran */
- event->builtin_run |= (1 << cur->key.builtin_cmd);
- }
+ return 1;
+}
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), command, sizeof(command), false);
- log_device_debug(dev, "IMPORT builtin '%s' %s:%u",
- udev_builtin_name(cur->key.builtin_cmd),
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
+static int attr_subst_subdir(char attr[static UTIL_PATH_SIZE]) {
+ _cleanup_closedir_ DIR *dir = NULL;
+ struct dirent *dent;
+ char buf[UTIL_PATH_SIZE], *p;
+ const char *tail;
+ size_t len, size;
- r = udev_builtin_run(dev, cur->key.builtin_cmd, command, false);
- if (r < 0) {
- /* remember failure */
- log_device_debug_errno(dev, r, "IMPORT builtin '%s' fails: %m",
- udev_builtin_name(cur->key.builtin_cmd));
- event->builtin_ret |= (1 << cur->key.builtin_cmd);
- if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- }
- break;
- }
- case TK_M_IMPORT_DB: {
- const char *key;
-
- key = rules_str(rules, cur->key.value_off);
- if (event->dev_db_clone &&
- sd_device_get_property_value(event->dev_db_clone, key, &val) >= 0)
- device_add_property(dev, key, val);
- else if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- break;
- }
- case TK_M_IMPORT_CMDLINE: {
- _cleanup_free_ char *value = NULL;
- bool imported = false;
- const char *key;
+ tail = strstr(attr, "/*/");
+ if (!tail)
+ return 0;
- key = rules_str(rules, cur->key.value_off);
- r = proc_cmdline_get_key(key, PROC_CMDLINE_VALUE_OPTIONAL, &value);
- if (r < 0)
- log_device_debug_errno(dev, r, "Failed to read %s from /proc/cmdline, ignoring: %m", key);
- else if (r > 0) {
- imported = true;
+ len = tail - attr + 1; /* include slash at the end */
+ tail += 2; /* include slash at the beginning */
- if (value)
- device_add_property(dev, key, value);
- else
- /* we import simple flags as 'FLAG=1' */
- device_add_property(dev, key, "1");
- }
+ p = buf;
+ size = sizeof(buf);
+ size -= strnpcpy(&p, size, attr, len);
- if (!imported && cur->key.op != OP_NOMATCH)
- goto nomatch;
- break;
- }
- case TK_M_IMPORT_PARENT: {
- char import[UTIL_PATH_SIZE];
+ dir = opendir(buf);
+ if (!dir)
+ return -errno;
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), import, sizeof(import), false);
- if (import_parent_into_properties(dev, import) < 0)
- if (cur->key.op != OP_NOMATCH)
- goto nomatch;
- break;
- }
- case TK_M_RESULT:
- if (!match_key(rules, cur, event->program_result))
- goto nomatch;
- break;
- case TK_A_STRING_ESCAPE_NONE:
- esc = ESCAPE_NONE;
- break;
- case TK_A_STRING_ESCAPE_REPLACE:
- esc = ESCAPE_REPLACE;
- break;
- case TK_A_DB_PERSIST:
- device_set_db_persist(dev);
- break;
- case TK_A_INOTIFY_WATCH:
- if (event->inotify_watch_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->inotify_watch_final = true;
- event->inotify_watch = cur->key.watch;
- break;
- case TK_A_DEVLINK_PRIO:
- device_set_devlink_priority(dev, cur->key.devlink_prio);
- break;
- case TK_A_OWNER: {
- char owner[UTIL_NAME_SIZE];
- const char *ow = owner;
+ FOREACH_DIRENT_ALL(dent, dir, break) {
+ if (dent->d_name[0] == '.')
+ continue;
+
+ strscpyl(p, size, dent->d_name, tail, NULL);
+ if (faccessat(dirfd(dir), p, F_OK, 0) < 0)
+ continue;
+
+ strcpy(attr, buf);
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+static int udev_rule_apply_token_to_event(
+ UdevRules *rules,
+ sd_device *dev,
+ UdevEvent *event,
+ usec_t timeout_usec,
+ Hashmap *properties_list) {
+
+ UdevRuleToken *token;
+ char buf[UTIL_PATH_SIZE];
+ const char *val;
+ size_t count;
+ bool match;
+ int r;
+
+ assert(rules);
+ assert(dev);
+ assert(event);
+
+ /* This returns the following values:
+ * 0 on the current token does not match the event,
+ * 1 on the current token matches the event, and
+ * negative errno on some critical errors. */
+
+ token = rules->current_file->current_line->current_token;
+
+ switch (token->type) {
+ case TK_M_ACTION: {
+ DeviceAction a;
+
+ r = device_get_action(dev, &a);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to get uevent action type: %m");
+
+ return token_match_string(token, device_action_to_string(a));
+ }
+ case TK_M_DEVPATH:
+ r = sd_device_get_devpath(dev, &val);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to get devpath: %m");
+
+ return token_match_string(token, val);
+ case TK_M_KERNEL:
+ case TK_M_PARENTS_KERNEL:
+ r = sd_device_get_sysname(dev, &val);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to get sysname: %m");
+
+ return token_match_string(token, val);
+ case TK_M_DEVLINK:
+ FOREACH_DEVICE_DEVLINK(dev, val)
+ if (token_match_string(token, strempty(startswith(val, "/dev/"))))
+ return token->op == OP_MATCH;
+ return token->op == OP_NOMATCH;
+ case TK_M_NAME:
+ return token_match_string(token, event->name);
+ case TK_M_ENV:
+ if (sd_device_get_property_value(dev, (const char*) token->data, &val) < 0)
+ val = hashmap_get(properties_list, token->data);
+
+ return token_match_string(token, val);
+ case TK_M_TAG:
+ case TK_M_PARENTS_TAG:
+ FOREACH_DEVICE_TAG(dev, val)
+ if (token_match_string(token, val))
+ return token->op == OP_MATCH;
+ return token->op == OP_NOMATCH;
+ case TK_M_SUBSYSTEM:
+ case TK_M_PARENTS_SUBSYSTEM:
+ r = sd_device_get_subsystem(dev, &val);
+ if (r == -ENOENT)
+ val = NULL;
+ else if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to get subsystem: %m");
+
+ return token_match_string(token, val);
+ case TK_M_DRIVER:
+ case TK_M_PARENTS_DRIVER:
+ r = sd_device_get_driver(dev, &val);
+ if (r == -ENOENT)
+ val = NULL;
+ else if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to get driver: %m");
+
+ return token_match_string(token, val);
+ case TK_M_ATTR:
+ case TK_M_PARENTS_ATTR:
+ return token_match_attr(token, dev, event);
+ case TK_M_SYSCTL: {
+ _cleanup_free_ char *value = NULL;
+
+ (void) udev_event_apply_format(event, (const char*) token->data, buf, sizeof(buf), false);
+ r = sysctl_read(sysctl_normalize(buf), &value);
+ if (r < 0 && r != -ENOENT)
+ return log_rule_error_errno(dev, rules, r, "Failed to read sysctl '%s': %m", buf);
+
+ return token_match_string(token, strstrip(value));
+ }
+ case TK_M_TEST: {
+ mode_t mode = PTR_TO_MODE(token->data);
+ struct stat statbuf;
+
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ if (!path_is_absolute(buf) &&
+ util_resolve_subsys_kernel(buf, buf, sizeof(buf), false) < 0) {
+ char tmp[UTIL_PATH_SIZE];
+
+ r = sd_device_get_syspath(dev, &val);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to get syspath: %m");
+
+ strscpy(tmp, sizeof(tmp), buf);
+ strscpyl(buf, sizeof(buf), val, "/", tmp, NULL);
+ }
+
+ r = attr_subst_subdir(buf);
+ if (r == -ENOENT)
+ return token->op == OP_NOMATCH;
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to test the existence of '%s': %m", buf);
+
+ if (stat(buf, &statbuf) < 0)
+ return token->op == OP_NOMATCH;
+
+ if (mode == MODE_INVALID)
+ return token->op == OP_MATCH;
+
+ match = (((statbuf.st_mode ^ mode) & 07777) == 0);
+ return token->op == (match ? OP_MATCH : OP_NOMATCH);
+ }
+ case TK_M_PROGRAM: {
+ char result[UTIL_LINE_SIZE];
+
+ event->program_result = mfree(event->program_result);
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ log_rule_debug(dev, rules, "Running PROGRAM '%s'", buf);
+
+ r = udev_event_spawn(event, timeout_usec, true, buf, result, sizeof(result));
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to execute '%s': %m", buf);
+ if (r > 0)
+ return token->op == OP_NOMATCH;
+
+ delete_trailing_chars(result, "\n");
+ count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
+ if (count > 0)
+ log_rule_debug(dev, rules, "Replaced %zu character(s) from result of '%s'",
+ count, buf);
+
+ event->program_result = strdup(result);
+ return token->op == OP_MATCH;
+ }
+ case TK_M_IMPORT_FILE: {
+ _cleanup_fclose_ FILE *f = NULL;
+
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ log_rule_debug(dev, rules, "Importing properties from '%s'", buf);
+
+ f = fopen(buf, "re");
+ if (!f) {
+ if (errno != ENOENT)
+ return log_rule_error_errno(dev, rules, errno,
+ "Failed to open '%s': %m", buf);
+ return token->op == OP_NOMATCH;
+ }
- if (event->owner_final)
+ for (;;) {
+ _cleanup_free_ char *line = NULL;
+ char *key, *value;
+
+ r = read_line(f, LONG_LINE_MAX, &line);
+ if (r < 0) {
+ log_rule_debug_errno(dev, rules, r,
+ "Failed to read '%s', ignoring: %m", buf);
+ return token->op == OP_NOMATCH;
+ }
+ if (r == 0)
break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->owner_final = true;
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), owner, sizeof(owner), false);
- event->owner_set = true;
- r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
+
+ r = get_property_from_string(line, &key, &value);
if (r < 0) {
- log_unknown_owner(dev, r, "user", owner);
- event->uid = 0;
+ log_rule_debug_errno(dev, rules, r,
+ "Failed to parse key and value from '%s', ignoring: %m",
+ line);
+ continue;
}
- log_device_debug(dev, "OWNER %u %s:%u",
- event->uid,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- break;
+
+ r = device_add_property(dev, key, value);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r,
+ "Failed to add property %s=%s: %m",
+ key, value);
}
- case TK_A_GROUP: {
- char group[UTIL_NAME_SIZE];
- const char *gr = group;
- if (event->group_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->group_final = true;
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), group, sizeof(group), false);
- event->group_set = true;
- r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING);
+ return token->op == OP_MATCH;
+ }
+ case TK_M_IMPORT_PROGRAM: {
+ char result[UTIL_LINE_SIZE], *line, *pos;
+
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ log_rule_debug(dev, rules, "Importing properties from results of '%s'", buf);
+
+ r = udev_event_spawn(event, timeout_usec, true, buf, result, sizeof result);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to execute '%s': %m", buf);
+ if (r > 0) {
+ log_rule_debug(dev, rules, "Command \"%s\" returned %d (error), ignoring", buf, r);
+ return token->op == OP_NOMATCH;
+ }
+
+ for (line = result; !isempty(line); line = pos) {
+ char *key, *value;
+
+ pos = strchr(line, '\n');
+ if (pos)
+ *pos++ = '\0';
+
+ r = get_property_from_string(line, &key, &value);
if (r < 0) {
- log_unknown_owner(dev, r, "group", group);
- event->gid = 0;
+ log_rule_debug_errno(dev, rules, r,
+ "Failed to parse key and value from '%s', ignoring: %m",
+ line);
+ continue;
}
- log_device_debug(dev, "GROUP %u %s:%u",
- event->gid,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- break;
+
+ r = device_add_property(dev, key, value);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r,
+ "Failed to add property %s=%s: %m",
+ key, value);
}
- case TK_A_MODE: {
- char mode_str[UTIL_NAME_SIZE];
- mode_t mode;
- if (event->mode_final)
- break;
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), mode_str, sizeof(mode_str), false);
- r = parse_mode(mode_str, &mode);
- if (r < 0) {
- log_device_error_errno(dev, r, "Failed to parse mode '%s': %m", mode_str);
- break;
+ return token->op == OP_MATCH;
+ }
+ case TK_M_IMPORT_BUILTIN: {
+ UdevBuiltinCommand cmd = PTR_TO_UDEV_BUILTIN_CMD(token->data);
+ unsigned mask = 1U << (int) cmd;
+
+ if (udev_builtin_run_once(cmd)) {
+ /* check if we ran already */
+ if (event->builtin_run & mask) {
+ log_rule_debug(dev, rules, "Skipping builtin '%s' in IMPORT key",
+ udev_builtin_name(cmd));
+ /* return the result from earlier run */
+ return token->op == (event->builtin_ret & mask ? OP_NOMATCH : OP_MATCH);
}
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->mode_final = true;
- event->mode_set = true;
- event->mode = mode;
- log_device_debug(dev, "MODE %#o %s:%u",
- event->mode,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- break;
+ /* mark as ran */
+ event->builtin_run |= mask;
}
- case TK_A_OWNER_ID:
- if (event->owner_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->owner_final = true;
- event->owner_set = true;
- event->uid = cur->key.uid;
- log_device_debug(dev, "OWNER %u %s:%u",
- event->uid,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
+
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ log_rule_debug(dev, rules, "Importing properties from results of builtin command '%s'", buf);
+
+ r = udev_builtin_run(dev, cmd, buf, false);
+ if (r < 0) {
+ /* remember failure */
+ log_rule_debug_errno(dev, rules, r, "Failed to run builtin '%s': %m", buf);
+ event->builtin_ret |= mask;
+ }
+ return token->op == (r >= 0 ? OP_MATCH : OP_NOMATCH);
+ }
+ case TK_M_IMPORT_DB: {
+ if (!event->dev_db_clone)
+ return token->op == OP_NOMATCH;
+ r = sd_device_get_property_value(event->dev_db_clone, token->value, &val);
+ if (r == -ENOENT)
+ return token->op == OP_NOMATCH;
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r,
+ "Failed to get property '%s' from database: %m",
+ token->value);
+
+ r = device_add_property(dev, token->value, val);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to add property '%s=%s': %m",
+ token->value, val);
+ return token->op == OP_MATCH;
+ }
+ case TK_M_IMPORT_CMDLINE: {
+ _cleanup_free_ char *value = NULL;
+
+ r = proc_cmdline_get_key(token->value, PROC_CMDLINE_VALUE_OPTIONAL, &value);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r,
+ "Failed to read '%s' option from /proc/cmdline: %m",
+ token->value);
+ if (r == 0)
+ return token->op == OP_NOMATCH;
+
+ r = device_add_property(dev, token->value, value ?: "1");
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to add property '%s=%s': %m",
+ token->value, value ?: "1");
+ return token->op == OP_MATCH;
+ }
+ case TK_M_IMPORT_PARENT: {
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ r = import_parent_into_properties(dev, buf);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r,
+ "Failed to import properties '%s' from parent: %m",
+ buf);
+ return token->op == (r > 0 ? OP_MATCH : OP_NOMATCH);
+ }
+ case TK_M_RESULT:
+ return token_match_string(token, event->program_result);
+ case TK_A_OPTIONS_STRING_ESCAPE_NONE:
+ event->esc = ESCAPE_NONE;
+ break;
+ case TK_A_OPTIONS_STRING_ESCAPE_REPLACE:
+ event->esc = ESCAPE_REPLACE;
+ break;
+ case TK_A_OPTIONS_DB_PERSIST:
+ device_set_db_persist(dev);
+ break;
+ case TK_A_OPTIONS_INOTIFY_WATCH:
+ if (event->inotify_watch_final)
break;
- case TK_A_GROUP_ID:
- if (event->group_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->group_final = true;
- event->group_set = true;
- event->gid = cur->key.gid;
- log_device_debug(dev, "GROUP %u %s:%u",
- event->gid,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
+ if (token->op == OP_ASSIGN_FINAL)
+ event->inotify_watch_final = true;
+
+ event->inotify_watch = token->data;
+ break;
+ case TK_A_OPTIONS_DEVLINK_PRIORITY:
+ device_set_devlink_priority(dev, PTR_TO_INT(token->data));
+ break;
+ case TK_A_OWNER: {
+ char owner[UTIL_NAME_SIZE];
+ const char *ow = owner;
+
+ if (event->owner_final)
break;
- case TK_A_MODE_ID:
- if (event->mode_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->mode_final = true;
- event->mode_set = true;
- event->mode = cur->key.mode;
- log_device_debug(dev, "MODE %#o %s:%u",
- event->mode,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
+ if (token->op == OP_ASSIGN_FINAL)
+ event->owner_final = true;
+
+ (void) udev_event_apply_format(event, token->value, owner, sizeof(owner), false);
+ r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
+ if (r < 0)
+ log_unknown_owner(dev, rules, r, "user", owner);
+ else
+ log_rule_debug(dev, rules, "OWNER %s(%u)", owner, event->uid);
+ break;
+ }
+ case TK_A_GROUP: {
+ char group[UTIL_NAME_SIZE];
+ const char *gr = group;
+
+ if (event->group_final)
break;
- case TK_A_SECLABEL: {
- _cleanup_free_ char *name = NULL, *label = NULL;
- char label_str[UTIL_LINE_SIZE] = {};
+ if (token->op == OP_ASSIGN_FINAL)
+ event->group_final = true;
- name = strdup(rules_str(rules, cur->key.attr_off));
- if (!name)
- return log_oom();
+ (void) udev_event_apply_format(event, token->value, group, sizeof(group), false);
+ r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING);
+ if (r < 0)
+ log_unknown_owner(dev, rules, r, "group", group);
+ else
+ log_rule_debug(dev, rules, "GROUP %s(%u)", group, event->gid);
+ break;
+ }
+ case TK_A_MODE: {
+ char mode_str[UTIL_NAME_SIZE];
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), label_str, sizeof(label_str), false);
- if (!isempty(label_str))
- label = strdup(label_str);
- else
- label = strdup(rules_str(rules, cur->key.value_off));
- if (!label)
- return log_oom();
+ if (event->mode_final)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->mode_final = true;
- if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL))
- ordered_hashmap_clear_free_free(event->seclabel_list);
+ (void) udev_event_apply_format(event, token->value, mode_str, sizeof(mode_str), false);
+ r = parse_mode(mode_str, &event->mode);
+ if (r < 0)
+ log_rule_error_errno(dev, rules, r, "Failed to parse mode '%s', ignoring: %m", mode_str);
+ else
+ log_rule_debug(dev, rules, "MODE %#o", event->mode);
+ break;
+ }
+ case TK_A_OWNER_ID:
+ if (event->owner_final)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->owner_final = true;
+ if (!token->data)
+ break;
+ event->uid = PTR_TO_UID(token->data);
+ log_rule_debug(dev, rules, "OWNER %u", event->uid);
+ break;
+ case TK_A_GROUP_ID:
+ if (event->group_final)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->group_final = true;
+ if (!token->data)
+ break;
+ event->gid = PTR_TO_GID(token->data);
+ log_rule_debug(dev, rules, "GROUP %u", event->gid);
+ break;
+ case TK_A_MODE_ID:
+ if (event->mode_final)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->mode_final = true;
+ if (!token->data)
+ break;
+ event->mode = PTR_TO_MODE(token->data);
+ log_rule_debug(dev, rules, "MODE %#o", event->mode);
+ break;
+ case TK_A_SECLABEL: {
+ _cleanup_free_ char *name = NULL, *label = NULL;
+ char label_str[UTIL_LINE_SIZE] = {};
- r = ordered_hashmap_ensure_allocated(&event->seclabel_list, NULL);
- if (r < 0)
- return log_oom();
+ name = strdup((const char*) token->data);
+ if (!name)
+ return log_oom();
- r = ordered_hashmap_put(event->seclabel_list, name, label);
- if (r < 0)
- return log_oom();
- log_device_debug(dev, "SECLABEL{%s}='%s' %s:%u",
- name, label,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- name = label = NULL;
+ (void) udev_event_apply_format(event, token->value, label_str, sizeof(label_str), false);
+ if (!isempty(label_str))
+ label = strdup(label_str);
+ else
+ label = strdup(token->value);
+ if (!label)
+ return log_oom();
- break;
- }
- case TK_A_ENV: {
- char value_new[UTIL_NAME_SIZE];
- const char *name, *value_old;
-
- name = rules_str(rules, cur->key.attr_off);
- val = rules_str(rules, cur->key.value_off);
- if (val[0] == '\0') {
- if (cur->key.op == OP_ADD)
- break;
- device_add_property(dev, name, NULL);
- break;
- }
+ if (token->op == OP_ASSIGN)
+ ordered_hashmap_clear_free_free(event->seclabel_list);
- if (cur->key.op == OP_ADD &&
- sd_device_get_property_value(dev, name, &value_old) >= 0) {
- char temp[UTIL_NAME_SIZE];
+ r = ordered_hashmap_ensure_allocated(&event->seclabel_list, NULL);
+ if (r < 0)
+ return log_oom();
- /* append value separated by space */
- udev_event_apply_format(event, val, temp, sizeof(temp), false);
- strscpyl(value_new, sizeof(value_new), value_old, " ", temp, NULL);
- } else
- udev_event_apply_format(event, val, value_new, sizeof(value_new), false);
+ r = ordered_hashmap_put(event->seclabel_list, name, label);
+ if (r < 0)
+ return log_oom();
+ log_rule_debug(dev, rules, "SECLABEL{%s}='%s'", name, label);
+ name = label = NULL;
+ break;
+ }
+ case TK_A_ENV: {
+ const char *name = (const char*) token->data;
+ char value_new[UTIL_NAME_SIZE], *p = value_new;
+ size_t l = sizeof(value_new);
- device_add_property(dev, name, value_new);
- break;
- }
- case TK_A_TAG: {
- char tag[UTIL_PATH_SIZE];
- const char *p;
-
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), tag, sizeof(tag), false);
- if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL))
- device_cleanup_tags(dev);
- for (p = tag; *p != '\0'; p++) {
- if ((*p >= 'a' && *p <= 'z') ||
- (*p >= 'A' && *p <= 'Z') ||
- (*p >= '0' && *p <= '9') ||
- IN_SET(*p, '-', '_'))
- continue;
- log_device_error(dev, "Ignoring invalid tag name '%s'", tag);
+ if (isempty(token->value)) {
+ if (token->op == OP_ADD)
break;
- }
- if (cur->key.op == OP_REMOVE)
- device_remove_tag(dev, tag);
- else
- device_add_tag(dev, tag);
+ r = device_add_property(dev, name, NULL);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to remove property '%s': %m", name);
break;
}
- case TK_A_NAME: {
- char name_str[UTIL_PATH_SIZE];
- const char *name;
- int count;
- name = rules_str(rules, cur->key.value_off);
- if (event->name_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->name_final = true;
- udev_event_apply_format(event, name, name_str, sizeof(name_str), false);
- if (IN_SET(esc, ESCAPE_UNSET, ESCAPE_REPLACE)) {
- count = util_replace_chars(name_str, "/");
- if (count > 0)
- log_device_debug(dev, "Replaced %i character(s) from result of NAME=\"%s\"", count, name);
- }
- if (sd_device_get_devnum(dev, NULL) >= 0 &&
- (sd_device_get_devname(dev, &val) < 0 ||
- !streq(name_str, val + STRLEN("/dev/")))) {
- log_device_error(dev, "Kernel device nodes cannot be renamed, ignoring NAME=\"%s\"; please fix it in %s:%u\n",
- name,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- break;
- }
- if (free_and_strdup(&event->name, name_str) < 0)
- return log_oom();
+ if (token->op == OP_ADD &&
+ sd_device_get_property_value(dev, name, &val) >= 0)
+ l = strpcpyl(&p, l, val, " ", NULL);
+
+ (void) udev_event_apply_format(event, token->value, p, l, false);
- log_device_debug(dev, "NAME '%s' %s:%u",
- event->name,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
+ r = device_add_property(dev, name, value_new);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to add property '%s=%s': %m", name, value_new);
+ break;
+ }
+ case TK_A_TAG: {
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ if (token->op == OP_ASSIGN)
+ device_cleanup_tags(dev);
+
+ if (buf[strspn(buf, ALPHANUMERICAL "-_")] != '\0') {
+ log_rule_error(dev, rules, "Invalid tag name '%s', ignoring", buf);
break;
}
- case TK_A_DEVLINK: {
- char temp[UTIL_PATH_SIZE], filename[UTIL_PATH_SIZE], *pos, *next;
- int count = 0;
+ if (token->op == OP_REMOVE)
+ device_remove_tag(dev, buf);
+ else {
+ r = device_add_tag(dev, buf);
+ if (r < 0)
+ return log_rule_error_errno(dev, rules, r, "Failed to add tag '%s': %m", buf);
+ }
+ break;
+ }
+ case TK_A_NAME: {
+ if (event->name_final)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->name_final = true;
- if (event->devlink_final)
- break;
- if (sd_device_get_devnum(dev, NULL) < 0)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->devlink_final = true;
- if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL))
- device_cleanup_devlinks(dev);
-
- /* allow multiple symlinks separated by spaces */
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), temp, sizeof(temp), esc != ESCAPE_NONE);
- if (esc == ESCAPE_UNSET)
- count = util_replace_chars(temp, "/ ");
- else if (esc == ESCAPE_REPLACE)
- count = util_replace_chars(temp, "/");
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
+ if (IN_SET(event->esc, ESCAPE_UNSET, ESCAPE_REPLACE)) {
+ count = util_replace_chars(buf, "/");
if (count > 0)
- log_device_debug(dev, "Replaced %i character(s) from result of LINK" , count);
- pos = temp;
- while (isspace(pos[0]))
- pos++;
- next = strchr(pos, ' ');
- while (next) {
- next[0] = '\0';
- log_device_debug(dev, "LINK '%s' %s:%u", pos,
- rules_str(rules, rule->rule.filename_off), rule->rule.filename_line);
- strscpyl(filename, sizeof(filename), "/dev/", pos, NULL);
- device_add_devlink(dev, filename);
- while (isspace(next[1]))
- next++;
- pos = &next[1];
- next = strchr(pos, ' ');
- }
- if (pos[0] != '\0') {
- log_device_debug(dev, "LINK '%s' %s:%u", pos,
- rules_str(rules, rule->rule.filename_off), rule->rule.filename_line);
- strscpyl(filename, sizeof(filename), "/dev/", pos, NULL);
- device_add_devlink(dev, filename);
- }
- break;
+ log_rule_debug(dev, rules, "Replaced %zu character(s) from result of NAME=\"%s\"",
+ count, token->value);
}
- case TK_A_ATTR: {
- char attr[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE];
- _cleanup_fclose_ FILE *f = NULL;
- const char *key_name;
-
- key_name = rules_str(rules, cur->key.attr_off);
- if (util_resolve_subsys_kernel(key_name, attr, sizeof(attr), false) < 0 &&
- sd_device_get_syspath(dev, &val) >= 0)
- strscpyl(attr, sizeof(attr), val, "/", key_name, NULL);
- attr_subst_subdir(attr, sizeof(attr));
-
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false);
- log_device_debug(dev, "ATTR '%s' writing '%s' %s:%u", attr, value,
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- f = fopen(attr, "we");
- if (!f)
- log_device_error_errno(dev, errno, "Failed to open ATTR{%s} for writing: %m", attr);
- else if (fprintf(f, "%s", value) <= 0)
- log_device_error_errno(dev, errno, "Failed to write ATTR{%s}: %m", attr);
+ if (sd_device_get_devnum(dev, NULL) >= 0 &&
+ (sd_device_get_devname(dev, &val) < 0 ||
+ !streq_ptr(buf, startswith(val, "/dev/")))) {
+ log_rule_error(dev, rules,
+ "Kernel device nodes cannot be renamed, ignoring NAME=\"%s\"; please fix it.",
+ token->value);
break;
}
- case TK_A_SYSCTL: {
- char filename[UTIL_PATH_SIZE], value[UTIL_NAME_SIZE];
-
- udev_event_apply_format(event, rules_str(rules, cur->key.attr_off), filename, sizeof(filename), false);
- sysctl_normalize(filename);
- udev_event_apply_format(event, rules_str(rules, cur->key.value_off), value, sizeof(value), false);
- log_device_debug(dev, "SYSCTL '%s' writing '%s' %s:%u", filename, value,
- rules_str(rules, rule->rule.filename_off), rule->rule.filename_line);
- r = sysctl_write(filename, value);
+ if (free_and_strdup(&event->name, buf) < 0)
+ return log_oom();
+
+ log_rule_debug(dev, rules, "NAME '%s'", event->name);
+ break;
+ }
+ case TK_A_DEVLINK: {
+ char *p;
+
+ if (event->devlink_final)
+ break;
+ if (sd_device_get_devnum(dev, NULL) < 0)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->devlink_final = true;
+ if (IN_SET(token->op, OP_ASSIGN, OP_ASSIGN_FINAL))
+ device_cleanup_devlinks(dev);
+
+ /* allow multiple symlinks separated by spaces */
+ (void) udev_event_apply_format(event, token->value, buf, sizeof(buf), event->esc != ESCAPE_NONE);
+ if (event->esc == ESCAPE_UNSET)
+ count = util_replace_chars(buf, "/ ");
+ else if (event->esc == ESCAPE_REPLACE)
+ count = util_replace_chars(buf, "/");
+ else
+ count = 0;
+ if (count > 0)
+ log_rule_debug(dev, rules, "Replaced %zu character(s) from result of LINK", count);
+
+ p = skip_leading_chars(buf, NULL);
+ while (!isempty(p)) {
+ char filename[UTIL_PATH_SIZE], *next;
+
+ next = strchr(p, ' ');
+ if (next) {
+ *next++ = '\0';
+ next = skip_leading_chars(next, NULL);
+ }
+
+ strscpyl(filename, sizeof(filename), "/dev/", p, NULL);
+ r = device_add_devlink(dev, filename);
if (r < 0)
- log_device_error_errno(dev, r, "Failed to write SYSCTL{%s}='%s': %m", filename, value);
+ return log_rule_error_errno(dev, rules, r, "Failed to add devlink '%s': %m", filename);
+
+ log_rule_debug(dev, rules, "LINK '%s'", p);
+ p = next;
+ }
+ break;
+ }
+ case TK_A_ATTR: {
+ const char *key_name = (const char*) token->data;
+ char value[UTIL_NAME_SIZE];
+
+ if (util_resolve_subsys_kernel(key_name, buf, sizeof(buf), false) < 0 &&
+ sd_device_get_syspath(dev, &val) >= 0)
+ strscpyl(buf, sizeof(buf), val, "/", key_name, NULL);
+
+ r = attr_subst_subdir(buf);
+ if (r < 0) {
+ log_rule_error_errno(dev, rules, r, "Could not find file matches '%s', ignoring: %m", buf);
break;
}
- case TK_A_RUN_BUILTIN:
- case TK_A_RUN_PROGRAM: {
- _cleanup_free_ char *cmd = NULL;
+ (void) udev_event_apply_format(event, token->value, value, sizeof(value), false);
- if (event->run_final)
- break;
- if (cur->key.op == OP_ASSIGN_FINAL)
- event->run_final = true;
+ log_rule_debug(dev, rules, "ATTR '%s' writing '%s'", buf, value);
+ r = write_string_file(buf, value, WRITE_STRING_FILE_VERIFY_ON_FAILURE | WRITE_STRING_FILE_DISABLE_BUFFER);
+ if (r < 0)
+ log_rule_error_errno(dev, rules, r, "Failed to write ATTR{%s}, ignoring: %m", buf);
+ break;
+ }
+ case TK_A_SYSCTL: {
+ char value[UTIL_NAME_SIZE];
+
+ (void) udev_event_apply_format(event, (const char*) token->data, buf, sizeof(buf), false);
+ (void) udev_event_apply_format(event, token->value, value, sizeof(value), false);
+ sysctl_normalize(buf);
+ log_rule_debug(dev, rules, "SYSCTL '%s' writing '%s'", buf, value);
+ r = sysctl_write(buf, value);
+ if (r < 0)
+ log_rule_error_errno(dev, rules, r, "Failed to write SYSCTL{%s}='%s', ignoring: %m", buf, value);
+ break;
+ }
+ case TK_A_RUN_BUILTIN:
+ case TK_A_RUN_PROGRAM: {
+ _cleanup_free_ char *cmd = NULL;
- if (IN_SET(cur->key.op, OP_ASSIGN, OP_ASSIGN_FINAL))
- ordered_hashmap_clear_free_key(event->run_list);
+ if (event->run_final)
+ break;
+ if (token->op == OP_ASSIGN_FINAL)
+ event->run_final = true;
- r = ordered_hashmap_ensure_allocated(&event->run_list, NULL);
- if (r < 0)
- return log_oom();
+ if (IN_SET(token->op, OP_ASSIGN, OP_ASSIGN_FINAL))
+ ordered_hashmap_clear_free_key(event->run_list);
- cmd = strdup(rules_str(rules, cur->key.value_off));
- if (!cmd)
- return log_oom();
+ r = ordered_hashmap_ensure_allocated(&event->run_list, NULL);
+ if (r < 0)
+ return log_oom();
- r = ordered_hashmap_put(event->run_list, cmd, INT_TO_PTR(cur->key.builtin_cmd));
- if (r < 0)
- return log_oom();
+ cmd = strdup(token->value);
+ if (!cmd)
+ return log_oom();
- cmd = NULL;
+ r = ordered_hashmap_put(event->run_list, cmd, token->data);
+ if (r < 0)
+ return log_oom();
- log_device_debug(dev, "RUN '%s' %s:%u",
- rules_str(rules, cur->key.value_off),
- rules_str(rules, rule->rule.filename_off),
- rule->rule.filename_line);
- break;
- }
- case TK_A_GOTO:
- if (cur->key.rule_goto == 0)
+ TAKE_PTR(cmd);
+
+ log_rule_debug(dev, rules, "RUN '%s'", token->value);
+ break;
+ }
+ case TK_A_OPTIONS_STATIC_NODE:
+ /* do nothing for events. */
+ break;
+ default:
+ assert_not_reached("Invalid token type");
+ }
+
+ return true;
+}
+
+static bool token_is_for_parents(UdevRuleToken *token) {
+ return token->type >= TK_M_PARENTS_KERNEL && token->type <= TK_M_PARENTS_TAG;
+}
+
+static int udev_rule_apply_parent_token_to_event(
+ UdevRules *rules,
+ UdevEvent *event) {
+
+ UdevRuleLine *line;
+ UdevRuleToken *head;
+ int r;
+
+ line = rules->current_file->current_line;
+ head = rules->current_file->current_line->current_token;
+ event->dev_parent = event->dev;
+ for (;;) {
+ LIST_FOREACH(tokens, line->current_token, head) {
+ if (!token_is_for_parents(line->current_token))
+ return true; /* All parent tokens match. */
+ r = udev_rule_apply_token_to_event(rules, event->dev_parent, event, 0, NULL);
+ if (r < 0)
+ return r;
+ if (r == 0)
break;
- cur = &rules->tokens[cur->key.rule_goto];
- continue;
- case TK_END:
- return 0;
+ }
+ if (!line->current_token)
+ /* All parent tokens match. But no assign tokens in the line. Hmm... */
+ return true;
+
+ if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) {
+ event->dev_parent = NULL;
+ return false;
+ }
+ }
+}
+
+static int udev_rule_apply_line_to_event(
+ UdevRules *rules,
+ UdevEvent *event,
+ usec_t timeout_usec,
+ Hashmap *properties_list,
+ UdevRuleLine **next_line) {
+
+ UdevRuleLine *line = rules->current_file->current_line;
+ UdevRuleLineType mask = LINE_HAS_GOTO | LINE_UPDATE_SOMETHING;
+ UdevRuleToken *token, *next_token;
+ bool parents_done = false;
+ DeviceAction action;
+ int r;
- case TK_M_PARENTS_MIN:
- case TK_M_PARENTS_MAX:
- case TK_M_MAX:
- case TK_UNSET:
- log_device_error(dev, "Wrong type %u", cur->type);
- goto nomatch;
+ r = device_get_action(event->dev, &action);
+ if (r < 0)
+ return r;
+
+ if (action != DEVICE_ACTION_REMOVE) {
+ if (sd_device_get_devnum(event->dev, NULL) >= 0)
+ mask |= LINE_HAS_DEVLINK;
+
+ if (sd_device_get_ifindex(event->dev, NULL) >= 0)
+ mask |= LINE_HAS_NAME;
+ }
+
+ if ((line->type & mask) == 0)
+ return 0;
+
+ event->esc = ESCAPE_UNSET;
+ LIST_FOREACH_SAFE(tokens, token, next_token, line->tokens) {
+ line->current_token = token;
+
+ if (token_is_for_parents(token)) {
+ if (parents_done)
+ continue;
+
+ r = udev_rule_apply_parent_token_to_event(rules, event);
+ if (r <= 0)
+ return r;
+
+ parents_done = true;
+ continue;
}
- cur++;
- continue;
- nomatch:
- /* fast-forward to next rule */
- cur = rule + rule->rule.token_count;
+ r = udev_rule_apply_token_to_event(rules, event->dev, event, timeout_usec, properties_list);
+ if (r <= 0)
+ return r;
}
+ if (line->goto_line)
+ *next_line = line->goto_line;
+
return 0;
}
-int udev_rules_apply_static_dev_perms(UdevRules *rules) {
- struct token *cur;
- struct token *rule;
- uid_t uid = 0;
- gid_t gid = 0;
- mode_t mode = 0;
- _cleanup_strv_free_ char **tags = NULL;
+int udev_rules_apply_to_event(
+ UdevRules *rules,
+ UdevEvent *event,
+ usec_t timeout_usec,
+ Hashmap *properties_list) {
+
+ UdevRuleFile *file;
+ UdevRuleLine *next_line;
+ int r;
+
+ assert(rules);
+ assert(event);
+
+ LIST_FOREACH(rule_files, file, rules->rule_files) {
+ rules->current_file = file;
+ LIST_FOREACH_SAFE(rule_lines, file->current_line, next_line, file->rule_lines) {
+ r = udev_rule_apply_line_to_event(rules, event, timeout_usec, properties_list, &next_line);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int apply_static_dev_perms(const char *devnode, uid_t uid, gid_t gid, mode_t mode, char **tags) {
+ char device_node[UTIL_PATH_SIZE], tags_dir[UTIL_PATH_SIZE], tag_symlink[UTIL_PATH_SIZE];
+ _cleanup_free_ char *unescaped_filename = NULL;
+ struct stat stats;
char **t;
- FILE *f = NULL;
- _cleanup_free_ char *path = NULL;
int r;
- if (!rules->tokens)
+ assert(devnode);
+
+ if (uid == UID_INVALID && gid == GID_INVALID && mode == MODE_INVALID && !tags)
return 0;
- cur = &rules->tokens[0];
- rule = cur;
- for (;;) {
- switch (cur->type) {
- case TK_RULE:
- /* current rule */
- rule = cur;
-
- /* skip rules without a static_node tag */
- if (!rule->rule.has_static_node)
- goto next;
-
- uid = 0;
- gid = 0;
- mode = 0;
- tags = strv_free(tags);
- break;
- case TK_A_OWNER_ID:
- uid = cur->key.uid;
- break;
- case TK_A_GROUP_ID:
- gid = cur->key.gid;
- break;
- case TK_A_MODE_ID:
- mode = cur->key.mode;
- break;
- case TK_A_TAG:
- r = strv_extend(&tags, rules_str(rules, cur->key.value_off));
- if (r < 0)
- goto finish;
+ strscpyl(device_node, sizeof(device_node), "/dev/", devnode, NULL);
+ if (stat(device_node, &stats) < 0) {
+ if (errno != ENOENT)
+ return log_error_errno(errno, "Failed to stat %s: %m", device_node);
+ return 0;
+ }
- break;
- case TK_A_STATIC_NODE: {
- char device_node[UTIL_PATH_SIZE];
- char tags_dir[UTIL_PATH_SIZE];
- char tag_symlink[UTIL_PATH_SIZE];
- struct stat stats;
+ if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) {
+ log_warning("%s is neither block nor character device, ignoring.", device_node);
+ return 0;
+ }
- /* we assure, that the permissions tokens are sorted before the static token */
+ if (!strv_isempty(tags)) {
+ unescaped_filename = xescape(devnode, "/.");
+ if (!unescaped_filename)
+ return log_oom();
+ }
- if (mode == 0 && uid == 0 && gid == 0 && !tags)
- goto next;
+ /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */
+ STRV_FOREACH(t, tags) {
+ strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL);
+ r = mkdir_p(tags_dir, 0755);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create %s: %m", tags_dir);
- strscpyl(device_node, sizeof(device_node), "/dev/", rules_str(rules, cur->key.value_off), NULL);
- if (stat(device_node, &stats) < 0)
- break;
- if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
- break;
+ strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL);
+ r = symlink(device_node, tag_symlink);
+ if (r < 0 && errno != EEXIST)
+ return log_error_errno(errno, "Failed to create symlink %s -> %s: %m",
+ tag_symlink, device_node);
+ }
- /* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */
- if (tags) {
- STRV_FOREACH(t, tags) {
- _cleanup_free_ char *unescaped_filename = NULL;
+ /* don't touch the permissions if only the tags were set */
+ if (uid == UID_INVALID && gid == GID_INVALID && mode == MODE_INVALID)
+ return 0;
- strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL);
- r = mkdir_p(tags_dir, 0755);
- if (r < 0)
- return log_error_errno(r, "Failed to create %s: %m", tags_dir);
+ if (mode == MODE_INVALID)
+ mode = gid_is_valid(gid) ? 0660 : 0600;
+ if (!uid_is_valid(uid))
+ uid = 0;
+ if (!gid_is_valid(gid))
+ gid = 0;
- unescaped_filename = xescape(rules_str(rules, cur->key.value_off), "/.");
+ r = chmod_and_chown(device_node, mode, uid, gid);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to chown '%s' %u %u: %m",
+ device_node, uid, gid);
+ else
+ log_debug("chown '%s' %u:%u", device_node, uid, gid);
- strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL);
- r = symlink(device_node, tag_symlink);
- if (r < 0 && errno != EEXIST)
- return log_error_errno(errno, "Failed to create symlink %s -> %s: %m",
- tag_symlink, device_node);
- }
- }
+ (void) utimensat(AT_FDCWD, device_node, NULL, 0);
+ return 0;
+}
- /* don't touch the permissions if only the tags were set */
- if (mode == 0 && uid == 0 && gid == 0)
- break;
+static int udev_rule_line_apply_static_dev_perms(UdevRuleLine *rule_line) {
+ UdevRuleToken *token;
+ _cleanup_free_ char **tags = NULL;
+ uid_t uid = UID_INVALID;
+ gid_t gid = GID_INVALID;
+ mode_t mode = MODE_INVALID;
+ int r;
- if (mode == 0) {
- if (gid > 0)
- mode = 0660;
- else
- mode = 0600;
- }
+ assert(rule_line);
- r = chmod_and_chown(device_node, mode, uid, gid);
- if (r < 0)
- return log_error_errno(r, "Failed to chown/chmod '%s' uid=" UID_FMT ", gid=" GID_FMT ", mode=%#o: %m", device_node, uid, gid, mode);
- if (r > 0)
- log_debug("chown/chmod '%s' uid=" UID_FMT ", gid=" GID_FMT ", mode=%#o", device_node, uid, gid, mode);
+ if (!FLAGS_SET(rule_line->type, LINE_HAS_STATIC_NODE))
+ return 0;
- (void) utimensat(AT_FDCWD, device_node, NULL, 0);
- break;
- }
- case TK_END:
- goto finish;
+ LIST_FOREACH(tokens, token, rule_line->tokens)
+ if (token->type == TK_A_OWNER_ID)
+ uid = PTR_TO_UID(token->data);
+ else if (token->type == TK_A_GROUP_ID)
+ gid = PTR_TO_GID(token->data);
+ else if (token->type == TK_A_MODE_ID)
+ mode = PTR_TO_MODE(token->data);
+ else if (token->type == TK_A_TAG) {
+ r = strv_extend(&tags, token->value);
+ if (r < 0)
+ return log_oom();
+ } else if (token->type == TK_A_OPTIONS_STATIC_NODE) {
+ r = apply_static_dev_perms(token->value, uid, gid, mode, tags);
+ if (r < 0)
+ return r;
}
- cur++;
- continue;
-next:
- /* fast-forward to next rule */
- cur = rule + rule->rule.token_count;
- continue;
- }
+ return 0;
+}
+
+int udev_rules_apply_static_dev_perms(UdevRules *rules) {
+ UdevRuleFile *file;
+ UdevRuleLine *line;
+ int r;
+
+ assert(rules);
-finish:
- if (f) {
- fflush(f);
- fchmod(fileno(f), 0644);
- if (ferror(f) || rename(path, "/run/udev/static_node-tags") < 0) {
- unlink_noerrno("/run/udev/static_node-tags");
- unlink_noerrno(path);
- return -errno;
+ LIST_FOREACH(rule_files, file, rules->rule_files)
+ LIST_FOREACH(rule_lines, line, file->rule_lines) {
+ r = udev_rule_line_apply_static_dev_perms(line);
+ if (r < 0)
+ return r;
}
- }
return 0;
}
projects / thirdparty / systemd.git / commitdiff
