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-rw-r--r--src/udev/udev-rules.c2767
1 files changed, 2767 insertions, 0 deletions
diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c
new file mode 100644
index 0000000000..8a85eae717
--- /dev/null
+++ b/src/udev/udev-rules.c
@@ -0,0 +1,2767 @@
+/*
+ * Copyright (C) 2003-2010 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008 Alan Jenkins <alan-jenkins@tuffmail.co.uk>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stddef.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <errno.h>
+#include <dirent.h>
+#include <fnmatch.h>
+#include <time.h>
+
+#include "udev.h"
+
+#define PREALLOC_TOKEN 2048
+#define PREALLOC_STRBUF 32 * 1024
+#define PREALLOC_TRIE 256
+
+struct uid_gid {
+ unsigned int name_off;
+ union {
+ uid_t uid;
+ gid_t gid;
+ };
+};
+
+struct trie_node {
+ /* this node's first child */
+ unsigned int child_idx;
+ /* the next child of our parent node's child list */
+ unsigned int next_child_idx;
+ /* this node's last child (shortcut for append) */
+ unsigned int last_child_idx;
+ unsigned int value_off;
+ unsigned short value_len;
+ unsigned char key;
+};
+
+struct udev_rules {
+ struct udev *udev;
+ int resolve_names;
+
+ /* every key in the rules file becomes a token */
+ struct token *tokens;
+ unsigned int token_cur;
+ unsigned int token_max;
+
+ /* all key strings are copied to a single string buffer */
+ char *buf;
+ size_t buf_cur;
+ size_t buf_max;
+ unsigned int buf_count;
+
+ /* during rule parsing, strings are indexed to find duplicates */
+ struct trie_node *trie_nodes;
+ unsigned int trie_nodes_cur;
+ unsigned int trie_nodes_max;
+
+ /* during rule parsing, uid/gid lookup results are cached */
+ struct uid_gid *uids;
+ unsigned int uids_cur;
+ unsigned int uids_max;
+ struct uid_gid *gids;
+ unsigned int gids_cur;
+ unsigned int gids_max;
+};
+
+/* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */
+enum operation_type {
+ OP_UNSET,
+
+ OP_MATCH,
+ OP_NOMATCH,
+ OP_MATCH_MAX,
+
+ OP_ADD,
+ 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_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_EVENT_TIMEOUT, /* int */
+ 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_STATIC_NODE, /* val */
+ TK_A_ENV, /* val, attr */
+ TK_A_TAG, /* val */
+ TK_A_NAME, /* val */
+ TK_A_DEVLINK, /* val */
+ TK_A_ATTR, /* val, attr */
+ TK_A_RUN, /* 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 int unused:6;
+ unsigned short token_count;
+ unsigned int 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 int value_off;
+ union {
+ unsigned int attr_off;
+ int devlink_unique;
+ unsigned int rule_goto;
+ mode_t mode;
+ uid_t uid;
+ gid_t gid;
+ int devlink_prio;
+ int event_timeout;
+ int watch;
+ enum udev_builtin_cmd builtin_cmd;
+ };
+ } key;
+ };
+};
+
+#define MAX_TK 64
+struct rule_tmp {
+ struct udev_rules *rules;
+ struct token rule;
+ struct token token[MAX_TK];
+ unsigned int token_cur;
+};
+
+#ifdef ENABLE_DEBUG
+static const char *operation_str(enum operation_type type)
+{
+ static const char *operation_strs[] = {
+ [OP_UNSET] = "UNSET",
+ [OP_MATCH] = "match",
+ [OP_NOMATCH] = "nomatch",
+ [OP_MATCH_MAX] = "MATCH_MAX",
+
+ [OP_ADD] = "add",
+ [OP_ASSIGN] = "assign",
+ [OP_ASSIGN_FINAL] = "assign-final",
+} ;
+
+ return operation_strs[type];
+}
+
+static const char *string_glob_str(enum string_glob_type type)
+{
+ static const char *string_glob_strs[] = {
+ [GL_UNSET] = "UNSET",
+ [GL_PLAIN] = "plain",
+ [GL_GLOB] = "glob",
+ [GL_SPLIT] = "split",
+ [GL_SPLIT_GLOB] = "split-glob",
+ [GL_SOMETHING] = "split-glob",
+ };
+
+ return string_glob_strs[type];
+}
+
+static const char *token_str(enum token_type type)
+{
+ static const char *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_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_EVENT_TIMEOUT] = "M EVENT_TIMEOUT",
+ [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_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_RUN] = "A RUN",
+ [TK_A_GOTO] = "A GOTO",
+
+ [TK_END] = "END",
+ };
+
+ return token_strs[type];
+}
+
+static void dump_token(struct udev_rules *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->buf[token->key.value_off];
+ const char *attr = &rules->buf[token->key.attr_off];
+
+ switch (type) {
+ case TK_RULE:
+ {
+ const char *tks_ptr = (char *)rules->tokens;
+ const char *tk_ptr = (char *)token;
+ unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token);
+
+ dbg(rules->udev, "* RULE %s:%u, token: %u, count: %u, label: '%s'\n",
+ &rules->buf[token->rule.filename_off], token->rule.filename_line,
+ idx, token->rule.token_count,
+ &rules->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:
+ dbg(rules->udev, "%s %s '%s'(%s)\n",
+ token_str(type), operation_str(op), value, string_glob_str(glob));
+ break;
+ case TK_M_IMPORT_BUILTIN:
+ dbg(rules->udev, "%s %i '%s'\n", token_str(type), token->key.builtin_cmd, value);
+ break;
+ case TK_M_ATTR:
+ case TK_M_ATTRS:
+ case TK_M_ENV:
+ case TK_A_ATTR:
+ case TK_A_ENV:
+ dbg(rules->udev, "%s %s '%s' '%s'(%s)\n",
+ token_str(type), operation_str(op), attr, value, string_glob_str(glob));
+ break;
+ case TK_M_TAG:
+ case TK_A_TAG:
+ dbg(rules->udev, "%s %s '%s'\n", 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:
+ dbg(rules->udev, "%s\n", token_str(type));
+ break;
+ case TK_M_TEST:
+ dbg(rules->udev, "%s %s '%s'(%s) %#o\n",
+ token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode);
+ break;
+ case TK_A_INOTIFY_WATCH:
+ dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch);
+ break;
+ case TK_A_DEVLINK_PRIO:
+ dbg(rules->udev, "%s %u\n", token_str(type), token->key.devlink_prio);
+ break;
+ case TK_A_OWNER_ID:
+ dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.uid);
+ break;
+ case TK_A_GROUP_ID:
+ dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.gid);
+ break;
+ case TK_A_MODE_ID:
+ dbg(rules->udev, "%s %s %#o\n", token_str(type), operation_str(op), token->key.mode);
+ break;
+ case TK_A_STATIC_NODE:
+ dbg(rules->udev, "%s '%s'\n", token_str(type), value);
+ break;
+ case TK_M_EVENT_TIMEOUT:
+ dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout);
+ break;
+ case TK_A_GOTO:
+ dbg(rules->udev, "%s '%s' %u\n", token_str(type), value, token->key.rule_goto);
+ break;
+ case TK_END:
+ dbg(rules->udev, "* %s\n", token_str(type));
+ break;
+ case TK_M_PARENTS_MIN:
+ case TK_M_PARENTS_MAX:
+ case TK_M_MAX:
+ case TK_UNSET:
+ dbg(rules->udev, "unknown type %u\n", type);
+ break;
+ }
+}
+
+static void dump_rules(struct udev_rules *rules)
+{
+ unsigned int i;
+
+ dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n",
+ rules->token_cur,
+ rules->token_cur * sizeof(struct token),
+ rules->buf_count,
+ rules->buf_cur);
+ for(i = 0; i < rules->token_cur; i++)
+ dump_token(rules, &rules->tokens[i]);
+}
+#else
+static inline const char *operation_str(enum operation_type type) { return NULL; }
+static inline const char *token_str(enum token_type type) { return NULL; }
+static inline void dump_token(struct udev_rules *rules, struct token *token) {}
+static inline void dump_rules(struct udev_rules *rules) {}
+#endif /* ENABLE_DEBUG */
+
+static int add_new_string(struct udev_rules *rules, const char *str, size_t bytes)
+{
+ int off;
+
+ /* grow buffer if needed */
+ if (rules->buf_cur + bytes+1 >= rules->buf_max) {
+ char *buf;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->buf_max;
+ if (add < bytes * 8)
+ add = bytes * 8;
+
+ buf = realloc(rules->buf, rules->buf_max + add);
+ if (buf == NULL)
+ return -1;
+ dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
+ rules->buf = buf;
+ rules->buf_max += add;
+ }
+ off = rules->buf_cur;
+ memcpy(&rules->buf[rules->buf_cur], str, bytes);
+ rules->buf_cur += bytes;
+ rules->buf_count++;
+ return off;
+}
+
+static int add_string(struct udev_rules *rules, const char *str)
+{
+ unsigned int node_idx;
+ struct trie_node *new_node;
+ unsigned int new_node_idx;
+ unsigned char key;
+ unsigned short len;
+ unsigned int depth;
+ unsigned int off;
+ struct trie_node *parent;
+
+ /* walk trie, start from last character of str to find matching tails */
+ len = strlen(str);
+ key = str[len-1];
+ node_idx = 0;
+ for (depth = 0; depth <= len; depth++) {
+ struct trie_node *node;
+ unsigned int child_idx;
+
+ node = &rules->trie_nodes[node_idx];
+ off = node->value_off + node->value_len - len;
+
+ /* match against current node */
+ if (depth == len || (node->value_len >= len && memcmp(&rules->buf[off], str, len) == 0))
+ return off;
+
+ /* lookup child node */
+ key = str[len - 1 - depth];
+ child_idx = node->child_idx;
+ while (child_idx > 0) {
+ struct trie_node *child;
+
+ child = &rules->trie_nodes[child_idx];
+ if (child->key == key)
+ break;
+ child_idx = child->next_child_idx;
+ }
+ if (child_idx == 0)
+ break;
+ node_idx = child_idx;
+ }
+
+ /* string not found, add it */
+ off = add_new_string(rules, str, len + 1);
+
+ /* grow trie nodes if needed */
+ if (rules->trie_nodes_cur >= rules->trie_nodes_max) {
+ struct trie_node *nodes;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->trie_nodes_max;
+ if (add < 8)
+ add = 8;
+
+ nodes = realloc(rules->trie_nodes, (rules->trie_nodes_max + add) * sizeof(struct trie_node));
+ if (nodes == NULL)
+ return -1;
+ dbg(rules->udev, "extend trie nodes from %u to %u\n",
+ rules->trie_nodes_max, rules->trie_nodes_max + add);
+ rules->trie_nodes = nodes;
+ rules->trie_nodes_max += add;
+ }
+
+ /* get a new node */
+ new_node_idx = rules->trie_nodes_cur;
+ rules->trie_nodes_cur++;
+ new_node = &rules->trie_nodes[new_node_idx];
+ memset(new_node, 0x00, sizeof(struct trie_node));
+ new_node->value_off = off;
+ new_node->value_len = len;
+ new_node->key = key;
+
+ /* join the parent's child list */
+ parent = &rules->trie_nodes[node_idx];
+ if (parent->child_idx == 0) {
+ parent->child_idx = new_node_idx;
+ } else {
+ struct trie_node *last_child;
+
+ last_child = &rules->trie_nodes[parent->last_child_idx];
+ last_child->next_child_idx = new_node_idx;
+ }
+ parent->last_child_idx = new_node_idx;
+ return off;
+}
+
+static int add_token(struct udev_rules *rules, struct token *token)
+{
+ /* grow buffer if needed */
+ if (rules->token_cur+1 >= rules->token_max) {
+ struct token *tokens;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->token_max;
+ if (add < 8)
+ add = 8;
+
+ tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
+ if (tokens == NULL)
+ return -1;
+ dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
+ rules->tokens = tokens;
+ rules->token_max += add;
+ }
+ memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
+ rules->token_cur++;
+ return 0;
+}
+
+static uid_t add_uid(struct udev_rules *rules, const char *owner)
+{
+ unsigned int i;
+ uid_t uid;
+ unsigned int off;
+
+ /* lookup, if we know it already */
+ for (i = 0; i < rules->uids_cur; i++) {
+ off = rules->uids[i].name_off;
+ if (strcmp(&rules->buf[off], owner) == 0) {
+ uid = rules->uids[i].uid;
+ dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
+ return uid;
+ }
+ }
+ uid = util_lookup_user(rules->udev, owner);
+
+ /* grow buffer if needed */
+ if (rules->uids_cur+1 >= rules->uids_max) {
+ struct uid_gid *uids;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->uids_max;
+ if (add < 1)
+ add = 8;
+
+ uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid));
+ if (uids == NULL)
+ return uid;
+ dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add);
+ rules->uids = uids;
+ rules->uids_max += add;
+ }
+ rules->uids[rules->uids_cur].uid = uid;
+ off = add_string(rules, owner);
+ if (off <= 0)
+ return uid;
+ rules->uids[rules->uids_cur].name_off = off;
+ rules->uids_cur++;
+ return uid;
+}
+
+static gid_t add_gid(struct udev_rules *rules, const char *group)
+{
+ unsigned int i;
+ gid_t gid;
+ unsigned int off;
+
+ /* lookup, if we know it already */
+ for (i = 0; i < rules->gids_cur; i++) {
+ off = rules->gids[i].name_off;
+ if (strcmp(&rules->buf[off], group) == 0) {
+ gid = rules->gids[i].gid;
+ dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
+ return gid;
+ }
+ }
+ gid = util_lookup_group(rules->udev, group);
+
+ /* grow buffer if needed */
+ if (rules->gids_cur+1 >= rules->gids_max) {
+ struct uid_gid *gids;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->gids_max;
+ if (add < 1)
+ add = 8;
+
+ gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid));
+ if (gids == NULL)
+ return gid;
+ dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add);
+ rules->gids = gids;
+ rules->gids_max += add;
+ }
+ rules->gids[rules->gids_cur].gid = gid;
+ off = add_string(rules, group);
+ if (off <= 0)
+ return gid;
+ rules->gids[rules->gids_cur].name_off = off;
+ rules->gids_cur++;
+ return gid;
+}
+
+static int import_property_from_string(struct udev_device *dev, char *line)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ char *key;
+ char *val;
+ size_t len;
+
+ /* find key */
+ key = line;
+ while (isspace(key[0]))
+ key++;
+
+ /* comment or empty line */
+ if (key[0] == '#' || key[0] == '\0')
+ return -1;
+
+ /* split key/value */
+ val = strchr(key, '=');
+ if (val == NULL)
+ return -1;
+ val[0] = '\0';
+ val++;
+
+ /* find value */
+ while (isspace(val[0]))
+ val++;
+
+ /* terminate key */
+ len = strlen(key);
+ if (len == 0)
+ return -1;
+ while (isspace(key[len-1]))
+ len--;
+ key[len] = '\0';
+
+ /* terminate value */
+ len = strlen(val);
+ if (len == 0)
+ return -1;
+ while (isspace(val[len-1]))
+ len--;
+ val[len] = '\0';
+
+ if (len == 0)
+ return -1;
+
+ /* unquote */
+ if (val[0] == '"' || val[0] == '\'') {
+ if (val[len-1] != val[0]) {
+ info(udev, "inconsistent quoting: '%s', skip\n", line);
+ return -1;
+ }
+ val[len-1] = '\0';
+ val++;
+ }
+
+ dbg(udev, "adding '%s'='%s'\n", key, val);
+
+ /* handle device, renamed by external tool, returning new path */
+ if (strcmp(key, "DEVPATH") == 0) {
+ char syspath[UTIL_PATH_SIZE];
+
+ info(udev, "updating devpath from '%s' to '%s'\n",
+ udev_device_get_devpath(dev), val);
+ util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL);
+ udev_device_set_syspath(dev, syspath);
+ } else {
+ struct udev_list_entry *entry;
+
+ entry = udev_device_add_property(dev, key, val);
+ /* store in db, skip private keys */
+ if (key[0] != '.')
+ udev_list_entry_set_num(entry, true);
+ }
+ return 0;
+}
+
+static int import_file_into_properties(struct udev_device *dev, const char *filename)
+{
+ FILE *f;
+ char line[UTIL_LINE_SIZE];
+
+ f = fopen(filename, "r");
+ if (f == NULL)
+ return -1;
+ while (fgets(line, sizeof(line), f) != NULL)
+ import_property_from_string(dev, line);
+ fclose(f);
+ return 0;
+}
+
+static int import_program_into_properties(struct udev_event *event, const char *program, const sigset_t *sigmask)
+{
+ struct udev_device *dev = event->dev;
+ char **envp;
+ char result[UTIL_LINE_SIZE];
+ char *line;
+ int err;
+
+ envp = udev_device_get_properties_envp(dev);
+ err = udev_event_spawn(event, program, envp, sigmask, result, sizeof(result));
+ if (err < 0)
+ return err;
+
+ line = result;
+ while (line != NULL) {
+ char *pos;
+
+ pos = strchr(line, '\n');
+ if (pos != NULL) {
+ pos[0] = '\0';
+ pos = &pos[1];
+ }
+ import_property_from_string(dev, line);
+ line = pos;
+ }
+ return 0;
+}
+
+static int import_parent_into_properties(struct udev_device *dev, const char *filter)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ struct udev_device *dev_parent;
+ struct udev_list_entry *list_entry;
+
+ dev_parent = udev_device_get_parent(dev);
+ if (dev_parent == NULL)
+ return -1;
+
+ dbg(udev, "found parent '%s', get the node name\n", udev_device_get_syspath(dev_parent));
+ udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(dev_parent)) {
+ const char *key = udev_list_entry_get_name(list_entry);
+ const char *val = udev_list_entry_get_value(list_entry);
+
+ if (fnmatch(filter, key, 0) == 0) {
+ struct udev_list_entry *entry;
+
+ dbg(udev, "import key '%s=%s'\n", key, val);
+ entry = udev_device_add_property(dev, key, val);
+ /* store in db, skip private keys */
+ if (key[0] != '.')
+ udev_list_entry_set_num(entry, true);
+ }
+ }
+ return 0;
+}
+
+#define WAIT_LOOP_PER_SECOND 50
+static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
+{
+ struct udev *udev = udev_device_get_udev(dev);
+ char filepath[UTIL_PATH_SIZE];
+ char devicepath[UTIL_PATH_SIZE];
+ struct stat stats;
+ int loop = timeout * WAIT_LOOP_PER_SECOND;
+
+ /* a relative path is a device attribute */
+ devicepath[0] = '\0';
+ if (file[0] != '/') {
+ util_strscpyl(devicepath, sizeof(devicepath),
+ udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL);
+ util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL);
+ file = filepath;
+ }
+
+ dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
+ while (--loop) {
+ const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND };
+
+ /* lookup file */
+ if (stat(file, &stats) == 0) {
+ info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
+ return 0;
+ }
+ /* make sure, the device did not disappear in the meantime */
+ if (devicepath[0] != '\0' && stat(devicepath, &stats) != 0) {
+ info(udev, "device disappeared while waiting for '%s'\n", file);
+ return -2;
+ }
+ info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
+ nanosleep(&duration, NULL);
+ }
+ info(udev, "waiting for '%s' failed\n", file);
+ return -1;
+}
+
+static int attr_subst_subdir(char *attr, size_t len)
+{
+ bool found = false;
+
+ if (strstr(attr, "/*/")) {
+ char *pos;
+ char dirname[UTIL_PATH_SIZE];
+ const char *tail;
+ DIR *dir;
+
+ util_strscpy(dirname, sizeof(dirname), attr);
+ pos = strstr(dirname, "/*/");
+ if (pos == NULL)
+ return -1;
+ pos[0] = '\0';
+ tail = &pos[2];
+ dir = opendir(dirname);
+ if (dir != NULL) {
+ struct dirent *dent;
+
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ struct stat stats;
+
+ if (dent->d_name[0] == '.')
+ continue;
+ util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL);
+ if (stat(attr, &stats) == 0) {
+ found = true;
+ break;
+ }
+ }
+ closedir(dir);
+ }
+ }
+
+ return found;
+}
+
+static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
+{
+ char *linepos;
+ char *temp;
+
+ linepos = *line;
+ if (linepos == NULL || linepos[0] == '\0')
+ return -1;
+
+ /* skip whitespace */
+ while (isspace(linepos[0]) || linepos[0] == ',')
+ linepos++;
+
+ /* get the key */
+ if (linepos[0] == '\0')
+ return -1;
+ *key = linepos;
+
+ for (;;) {
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+ if (isspace(linepos[0]))
+ break;
+ if (linepos[0] == '=')
+ break;
+ if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
+ if (linepos[1] == '=')
+ break;
+ }
+
+ /* remember end of key */
+ temp = linepos;
+
+ /* skip whitespace after key */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ /* 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] == '=') {
+ *op = OP_ASSIGN;
+ linepos++;
+ } else if (linepos[0] == ':' && linepos[1] == '=') {
+ *op = OP_ASSIGN_FINAL;
+ linepos += 2;
+ } else
+ return -1;
+
+ /* terminate key */
+ temp[0] = '\0';
+
+ /* skip whitespace after operator */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ /* get the value */
+ if (linepos[0] == '"')
+ linepos++;
+ else
+ return -1;
+ *value = linepos;
+
+ /* terminate */
+ temp = strchr(linepos, '"');
+ if (!temp)
+ return -1;
+ temp[0] = '\0';
+ temp++;
+ dbg(udev, "%s '%s'-'%s'\n", operation_str(*op), *key, *value);
+
+ /* move line to next key */
+ *line = temp;
+ return 0;
+}
+
+/* extract possible KEY{attr} */
+static char *get_key_attribute(struct udev *udev, char *str)
+{
+ char *pos;
+ char *attr;
+
+ attr = strchr(str, '{');
+ if (attr != NULL) {
+ attr++;
+ pos = strchr(attr, '}');
+ if (pos == NULL) {
+ err(udev, "missing closing brace for format\n");
+ return NULL;
+ }
+ pos[0] = '\0';
+ dbg(udev, "attribute='%s'\n", attr);
+ return attr;
+ }
+ 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;
+
+ memset(token, 0x00, sizeof(struct token));
+
+ 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_NAME:
+ case TK_A_GOTO:
+ case TK_M_TAG:
+ case TK_A_TAG:
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ break;
+ case TK_M_IMPORT_BUILTIN:
+ token->key.value_off = 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_ATTRS:
+ case TK_A_ATTR:
+ case TK_A_ENV:
+ attr = data;
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ token->key.attr_off = add_string(rule_tmp->rules, attr);
+ break;
+ case TK_A_DEVLINK:
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ token->key.devlink_unique = *(int *)data;
+ break;
+ case TK_M_TEST:
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ if (data != NULL)
+ 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:
+ token->key.value_off = 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_A_STATIC_NODE:
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ break;
+ case TK_M_EVENT_TIMEOUT:
+ token->key.event_timeout = *(int *)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:
+ err(rule_tmp->rules->udev, "wrong type %u\n", type);
+ return -1;
+ }
+
+ if (value != NULL && type < TK_M_MAX) {
+ /* check if we need to split or call fnmatch() while matching rules */
+ enum string_glob_type glob;
+ int has_split;
+ int has_glob;
+
+ has_split = (strchr(value, '|') != NULL);
+ has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || strchr(value, '[') != NULL);
+ if (has_split && has_glob) {
+ glob = GL_SPLIT_GLOB;
+ } else if (has_split) {
+ glob = GL_SPLIT;
+ } else if (has_glob) {
+ if (strcmp(value, "?*") == 0)
+ glob = GL_SOMETHING;
+ else
+ glob = GL_GLOB;
+ } else {
+ glob = GL_PLAIN;
+ }
+ token->key.glob = glob;
+ }
+
+ if (value != NULL && type > TK_M_MAX) {
+ /* check if assigned value has substitution chars */
+ if (value[0] == '[')
+ token->key.subst = SB_SUBSYS;
+ else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL)
+ token->key.subst = SB_FORMAT;
+ else
+ token->key.subst = SB_NONE;
+ }
+
+ if (attr != NULL) {
+ /* check if property/attribut name has substitution chars */
+ if (attr[0] == '[')
+ token->key.attrsubst = SB_SUBSYS;
+ else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL)
+ token->key.attrsubst = SB_FORMAT;
+ else
+ token->key.attrsubst = SB_NONE;
+ }
+
+ token->key.type = type;
+ token->key.op = op;
+ rule_tmp->token_cur++;
+ if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) {
+ err(rule_tmp->rules->udev, "temporary rule array too small\n");
+ return -1;
+ }
+ return 0;
+}
+
+static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp)
+{
+ unsigned int i;
+ unsigned int start = 0;
+ unsigned int end = rule_tmp->token_cur;
+
+ for (i = 0; i < rule_tmp->token_cur; i++) {
+ enum token_type next_val = TK_UNSET;
+ unsigned int next_idx = 0;
+ unsigned int j;
+
+ /* 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;
+ }
+ }
+
+ /* add token and mark done */
+ if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
+ return -1;
+ rule_tmp->token[next_idx].type = TK_UNSET;
+
+ /* shrink range */
+ if (next_idx == start)
+ start++;
+ if (next_idx+1 == end)
+ end--;
+ }
+ return 0;
+}
+
+static int add_rule(struct udev_rules *rules, char *line,
+ const char *filename, unsigned int filename_off, unsigned int lineno)
+{
+ char *linepos;
+ char *attr;
+ struct rule_tmp rule_tmp;
+
+ memset(&rule_tmp, 0x00, sizeof(struct rule_tmp));
+ rule_tmp.rules = rules;
+ rule_tmp.rule.type = TK_RULE;
+ 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(rules->udev, &linepos, &key, &op, &value) != 0)
+ break;
+
+ if (strcmp(key, "ACTION") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid ACTION operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "DEVPATH") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid DEVPATH operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "KERNEL") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid KERNEL operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "SUBSYSTEM") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid SUBSYSTEM operation\n");
+ goto invalid;
+ }
+ /* bus, class, subsystem events should all be the same */
+ if (strcmp(value, "subsystem") == 0 ||
+ strcmp(value, "bus") == 0 ||
+ strcmp(value, "class") == 0) {
+ if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
+ err(rules->udev, "'%s' must be specified as 'subsystem' \n"
+ "please fix it in %s:%u", value, filename, lineno);
+ rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
+ } else
+ rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "DRIVER") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid DRIVER operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL);
+ continue;
+ }
+
+ if (strncmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
+ attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
+ if (attr == NULL) {
+ err(rules->udev, "error parsing ATTR attribute\n");
+ goto invalid;
+ }
+ if (op < OP_MATCH_MAX) {
+ rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
+ } else {
+ rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
+ }
+ continue;
+ }
+
+ if (strcmp(key, "KERNELS") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid KERNELS operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "SUBSYSTEMS") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid SUBSYSTEMS operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "DRIVERS") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid DRIVERS operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
+ continue;
+ }
+
+ if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid ATTRS operation\n");
+ goto invalid;
+ }
+ attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
+ if (attr == NULL) {
+ err(rules->udev, "error parsing ATTRS attribute\n");
+ goto invalid;
+ }
+ if (strncmp(attr, "device/", 7) == 0)
+ err(rules->udev, "the 'device' link may not be available in a future kernel, "
+ "please fix it in %s:%u", filename, lineno);
+ else if (strstr(attr, "../") != NULL)
+ err(rules->udev, "do not reference parent sysfs directories directly, "
+ "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
+ rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
+ continue;
+ }
+
+ if (strcmp(key, "TAGS") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid TAGS operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_TAGS, op, value, NULL);
+ continue;
+ }
+
+ if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
+ attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
+ if (attr == NULL) {
+ err(rules->udev, "error parsing ENV attribute\n");
+ goto invalid;
+ }
+ if (op < OP_MATCH_MAX) {
+ if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
+ goto invalid;
+ } else {
+ static const char *blacklist[] = {
+ "ACTION",
+ "SUBSYSTEM",
+ "DEVTYPE",
+ "MAJOR",
+ "MINOR",
+ "DRIVER",
+ "IFINDEX",
+ "DEVNAME",
+ "DEVLINKS",
+ "DEVPATH",
+ "TAGS",
+ };
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(blacklist); i++)
+ if (strcmp(attr, blacklist[i]) == 0) {
+ err(rules->udev, "invalid ENV attribute, '%s' can not be set %s:%u\n", attr, filename, lineno);
+ continue;
+ }
+ if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
+ goto invalid;
+ }
+ continue;
+ }
+
+ if (strcmp(key, "TAG") == 0) {
+ if (op < OP_MATCH_MAX)
+ rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL);
+ else
+ rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "PROGRAM") == 0) {
+ rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "RESULT") == 0) {
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid RESULT operation\n");
+ goto invalid;
+ }
+ rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL);
+ continue;
+ }
+
+ if (strncmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
+ attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
+ if (attr == NULL) {
+ err(rules->udev, "IMPORT{} type missing, ignoring IMPORT %s:%u\n", filename, lineno);
+ continue;
+ }
+ if (strstr(attr, "program")) {
+ /* find known built-in command */
+ if (value[0] != '/') {
+ enum udev_builtin_cmd cmd;
+
+ cmd = udev_builtin_lookup(value);
+ if (cmd < UDEV_BUILTIN_MAX) {
+ info(rules->udev, "IMPORT found builtin '%s', replacing %s:%u\n",
+ value, filename, lineno);
+ rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd);
+ continue;
+ }
+ }
+ dbg(rules->udev, "IMPORT will be executed\n");
+ rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
+ } else if (strstr(attr, "builtin")) {
+ enum udev_builtin_cmd cmd = udev_builtin_lookup(value);
+
+ dbg(rules->udev, "IMPORT execute builtin\n");
+ if (cmd < UDEV_BUILTIN_MAX)
+ rule_add_key(&rule_tmp, TK_M_IMPORT_BUILTIN, op, value, &cmd);
+ else
+ err(rules->udev, "IMPORT{builtin}: '%s' unknown %s:%u\n", value, filename, lineno);
+ } else if (strstr(attr, "file")) {
+ dbg(rules->udev, "IMPORT will be included as file\n");
+ rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
+ } else if (strstr(attr, "db")) {
+ dbg(rules->udev, "IMPORT will include db values\n");
+ rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
+ } else if (strstr(attr, "cmdline")) {
+ dbg(rules->udev, "IMPORT will include db values\n");
+ rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL);
+ } else if (strstr(attr, "parent")) {
+ dbg(rules->udev, "IMPORT will include the parent values\n");
+ rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
+ }
+ continue;
+ }
+
+ if (strncmp(key, "TEST", sizeof("TEST")-1) == 0) {
+ mode_t mode = 0;
+
+ if (op > OP_MATCH_MAX) {
+ err(rules->udev, "invalid TEST operation\n");
+ goto invalid;
+ }
+ attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
+ if (attr != NULL) {
+ mode = strtol(attr, NULL, 8);
+ rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
+ } else {
+ rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
+ }
+ continue;
+ }
+
+ if (strcmp(key, "RUN") == 0) {
+ if (strncmp(value, "socket:", 7) == 0)
+ err(rules->udev, "RUN+=\"socket:...\" support will be removed from a future udev release. "
+ "Please remove it from: %s:%u and use libudev to subscribe to events.\n", filename, lineno);
+ rule_add_key(&rule_tmp, TK_A_RUN, op, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "WAIT_FOR") == 0 || strcmp(key, "WAIT_FOR_SYSFS") == 0) {
+ rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
+ continue;
+ }
+
+ if (strcmp(key, "LABEL") == 0) {
+ rule_tmp.rule.rule.label_off = add_string(rules, value);
+ continue;
+ }
+
+ if (strcmp(key, "GOTO") == 0) {
+ rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL);
+ continue;
+ }
+
+ if (strncmp(key, "NAME", sizeof("NAME")-1) == 0) {
+ if (op < OP_MATCH_MAX) {
+ rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
+ } else {
+ if (strcmp(value, "%k") == 0) {
+ err(rules->udev, "NAME=\"%%k\" is ignored, because it breaks kernel supplied names, "
+ "please remove it from %s:%u\n", filename, lineno);
+ continue;
+ }
+ if (value[0] == '\0') {
+ info(rules->udev, "NAME=\"\" is ignored, because udev will not delete any device nodes, "
+ "please remove it from %s:%u\n", filename, lineno);
+ continue;
+ }
+ rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
+ }
+ rule_tmp.rule.rule.can_set_name = true;
+ continue;
+ }
+
+ if (strncmp(key, "SYMLINK", sizeof("SYMLINK")-1) == 0) {
+ if (op < OP_MATCH_MAX) {
+ rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
+ } else {
+ int flag = 0;
+
+ attr = get_key_attribute(rules->udev, key + sizeof("SYMLINK")-1);
+ if (attr != NULL && strstr(attr, "unique") != NULL)
+ flag = 1;
+ rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, &flag);
+ }
+ rule_tmp.rule.rule.can_set_name = true;
+ continue;
+ }
+
+ if (strcmp(key, "OWNER") == 0) {
+ uid_t uid;
+ char *endptr;
+
+ uid = strtoul(value, &endptr, 10);
+ if (endptr[0] == '\0') {
+ rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
+ } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
+ uid = add_uid(rules, value);
+ rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
+ } else if (rules->resolve_names >= 0) {
+ rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
+ }
+ rule_tmp.rule.rule.can_set_name = true;
+ continue;
+ }
+
+ if (strcmp(key, "GROUP") == 0) {
+ gid_t gid;
+ char *endptr;
+
+ gid = strtoul(value, &endptr, 10);
+ if (endptr[0] == '\0') {
+ rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
+ } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) {
+ gid = add_gid(rules, value);
+ rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
+ } else if (rules->resolve_names >= 0) {
+ rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
+ }
+ rule_tmp.rule.rule.can_set_name = true;
+ continue;
+ }
+
+ if (strcmp(key, "MODE") == 0) {
+ mode_t mode;
+ char *endptr;
+
+ mode = strtol(value, &endptr, 8);
+ if (endptr[0] == '\0')
+ rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
+ else
+ rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
+ rule_tmp.rule.rule.can_set_name = true;
+ continue;
+ }
+
+ if (strcmp(key, "OPTIONS") == 0) {
+ const char *pos;
+
+ pos = strstr(value, "link_priority=");
+ if (pos != NULL) {
+ int prio = atoi(&pos[strlen("link_priority=")]);
+
+ rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio);
+ dbg(rules->udev, "link priority=%i\n", prio);
+ }
+
+ pos = strstr(value, "event_timeout=");
+ if (pos != NULL) {
+ int tout = atoi(&pos[strlen("event_timeout=")]);
+
+ rule_add_key(&rule_tmp, TK_M_EVENT_TIMEOUT, op, NULL, &tout);
+ dbg(rules->udev, "event timeout=%i\n", tout);
+ }
+
+ pos = strstr(value, "string_escape=");
+ if (pos != NULL) {
+ pos = &pos[strlen("string_escape=")];
+ if (strncmp(pos, "none", strlen("none")) == 0)
+ rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL);
+ else if (strncmp(pos, "replace", strlen("replace")) == 0)
+ rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL);
+ }
+
+ pos = strstr(value, "db_persist");
+ if (pos != NULL)
+ rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL);
+
+ pos = strstr(value, "nowatch");
+ if (pos != NULL) {
+ const int off = 0;
+
+ rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off);
+ dbg(rules->udev, "inotify watch of device disabled\n");
+ } else {
+ pos = strstr(value, "watch");
+ if (pos != NULL) {
+ const int on = 1;
+
+ rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on);
+ dbg(rules->udev, "inotify watch of device requested\n");
+ }
+ }
+
+ pos = strstr(value, "static_node=");
+ if (pos != NULL) {
+ rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL);
+ rule_tmp.rule.rule.has_static_node = true;
+ }
+
+ continue;
+ }
+
+ err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
+ goto invalid;
+ }
+
+ /* add rule token */
+ rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur;
+ if (add_token(rules, &rule_tmp.rule) != 0)
+ goto invalid;
+
+ /* add tokens to list, sorted by type */
+ if (sort_token(rules, &rule_tmp) != 0)
+ goto invalid;
+
+ return 0;
+invalid:
+ err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno);
+ return -1;
+}
+
+static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off)
+{
+ FILE *f;
+ unsigned int first_token;
+ char line[UTIL_LINE_SIZE];
+ int line_nr = 0;
+ unsigned int i;
+
+ info(rules->udev, "reading '%s' as rules file\n", filename);
+
+ f = fopen(filename, "r");
+ if (f == NULL)
+ return -1;
+
+ first_token = rules->token_cur;
+
+ while (fgets(line, sizeof(line), f) != NULL) {
+ char *key;
+ size_t len;
+
+ /* skip whitespace */
+ line_nr++;
+ key = line;
+ while (isspace(key[0]))
+ key++;
+
+ /* comment */
+ if (key[0] == '#')
+ continue;
+
+ len = strlen(line);
+ if (len < 3)
+ continue;
+
+ /* continue reading if backslash+newline is found */
+ while (line[len-2] == '\\') {
+ if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL)
+ break;
+ if (strlen(&line[len-2]) < 2)
+ break;
+ line_nr++;
+ len = strlen(line);
+ }
+
+ if (len+1 >= sizeof(line)) {
+ err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
+ continue;
+ }
+ add_rule(rules, key, filename, filename_off, line_nr);
+ }
+ fclose(f);
+
+ /* 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->buf[rules->tokens[i].key.value_off];
+ unsigned int 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 (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0)
+ continue;
+ rules->tokens[i].key.rule_goto = j;
+ break;
+ }
+ if (rules->tokens[i].key.rule_goto == 0)
+ err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
+ }
+ }
+ return 0;
+}
+
+static int add_matching_files(struct udev *udev, struct udev_list *file_list, const char *dirname, const char *suffix)
+{
+ DIR *dir;
+ struct dirent *dent;
+ char filename[UTIL_PATH_SIZE];
+
+ dbg(udev, "open directory '%s'\n", dirname);
+ dir = opendir(dirname);
+ if (dir == NULL) {
+ info(udev, "unable to open '%s': %m\n", dirname);
+ return -1;
+ }
+
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ if (dent->d_name[0] == '.')
+ continue;
+
+ /* look for file matching with specified suffix */
+ if (suffix != NULL) {
+ const char *ext;
+
+ ext = strrchr(dent->d_name, '.');
+ if (ext == NULL)
+ continue;
+ if (strcmp(ext, suffix) != 0)
+ continue;
+ }
+ util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL);
+ dbg(udev, "put file '%s' into list\n", filename);
+ /*
+ * the basename is the key, the filename the value
+ * identical basenames from different directories override each other
+ * entries are sorted after basename
+ */
+ udev_list_entry_add(file_list, dent->d_name, filename);
+ }
+
+ closedir(dir);
+ return 0;
+}
+
+struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
+{
+ struct udev_rules *rules;
+ struct udev_list file_list;
+ struct udev_list_entry *file_loop;
+ struct token end_token;
+ char **s;
+
+ rules = calloc(1, sizeof(struct udev_rules));
+ if (rules == NULL)
+ return NULL;
+ rules->udev = udev;
+ rules->resolve_names = resolve_names;
+ udev_list_init(udev, &file_list, true);
+
+ /* init token array and string buffer */
+ rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
+ if (rules->tokens == NULL) {
+ free(rules);
+ return NULL;
+ }
+ rules->token_max = PREALLOC_TOKEN;
+
+ rules->buf = malloc(PREALLOC_STRBUF);
+ if (rules->buf == NULL) {
+ free(rules->tokens);
+ free(rules);
+ return NULL;
+ }
+ rules->buf_max = PREALLOC_STRBUF;
+ /* offset 0 is always '\0' */
+ rules->buf[0] = '\0';
+ rules->buf_cur = 1;
+ dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
+ rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
+
+ rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node));
+ if (rules->trie_nodes == NULL) {
+ free(rules->buf);
+ free(rules->tokens);
+ free(rules);
+ return NULL;
+ }
+ rules->trie_nodes_max = PREALLOC_TRIE;
+ /* offset 0 is the trie root, with an empty string */
+ memset(rules->trie_nodes, 0x00, sizeof(struct trie_node));
+ rules->trie_nodes_cur = 1;
+
+ for (udev_get_rules_path(udev, &s, NULL); *s != NULL; s++)
+ add_matching_files(udev, &file_list, *s, ".rules");
+
+ /* add all filenames to the string buffer */
+ udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
+ const char *filename = udev_list_entry_get_value(file_loop);
+ unsigned int filename_off;
+
+ filename_off = add_string(rules, filename);
+ /* the offset in the rule is limited to unsigned short */
+ if (filename_off < USHRT_MAX)
+ udev_list_entry_set_num(file_loop, filename_off);
+ }
+
+ /* parse all rules files */
+ udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
+ const char *filename = udev_list_entry_get_value(file_loop);
+ unsigned int filename_off = udev_list_entry_get_num(file_loop);
+ struct stat st;
+
+ if (stat(filename, &st) != 0) {
+ err(udev, "can not find '%s': %m\n", filename);
+ continue;
+ }
+ if (S_ISREG(st.st_mode) && st.st_size <= 0) {
+ info(udev, "ignore empty '%s'\n", filename);
+ continue;
+ }
+ if (S_ISCHR(st.st_mode)) {
+ info(udev, "ignore masked '%s'\n", filename);
+ continue;
+ }
+ parse_file(rules, filename, filename_off);
+ }
+ udev_list_cleanup(&file_list);
+
+ memset(&end_token, 0x00, sizeof(struct token));
+ end_token.type = TK_END;
+ add_token(rules, &end_token);
+
+ /* shrink allocated token and string buffer */
+ if (rules->token_cur < rules->token_max) {
+ struct token *tokens;
+
+ tokens = realloc(rules->tokens, rules->token_cur * sizeof(struct token));
+ if (tokens != NULL || rules->token_cur == 0) {
+ rules->tokens = tokens;
+ rules->token_max = rules->token_cur;
+ }
+ }
+ if (rules->buf_cur < rules->buf_max) {
+ char *buf;
+
+ buf = realloc(rules->buf, rules->buf_cur);
+ if (buf != NULL || rules->buf_cur == 0) {
+ rules->buf = buf;
+ rules->buf_max = rules->buf_cur;
+ }
+ }
+ info(udev, "rules use %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
+ rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
+ info(udev, "temporary index used %zu bytes (%u * %zu bytes)\n",
+ rules->trie_nodes_cur * sizeof(struct trie_node),
+ rules->trie_nodes_cur, sizeof(struct trie_node));
+
+ /* cleanup trie */
+ free(rules->trie_nodes);
+ rules->trie_nodes = NULL;
+ rules->trie_nodes_cur = 0;
+ rules->trie_nodes_max = 0;
+
+ /* cleanup uid/gid cache */
+ free(rules->uids);
+ rules->uids = NULL;
+ rules->uids_cur = 0;
+ rules->uids_max = 0;
+ free(rules->gids);
+ rules->gids = NULL;
+ rules->gids_cur = 0;
+ rules->gids_max = 0;
+
+ dump_rules(rules);
+ return rules;
+}
+
+struct udev_rules *udev_rules_unref(struct udev_rules *rules)
+{
+ if (rules == NULL)
+ return NULL;
+ free(rules->tokens);
+ free(rules->buf);
+ free(rules->trie_nodes);
+ free(rules->uids);
+ free(rules->gids);
+ free(rules);
+ return NULL;
+}
+
+static int match_key(struct udev_rules *rules, struct token *token, const char *val)
+{
+ char *key_value = &rules->buf[token->key.value_off];
+ char *pos;
+ bool match = false;
+
+ if (val == NULL)
+ val = "";
+
+ switch (token->key.glob) {
+ case GL_PLAIN:
+ match = (strcmp(key_value, val) == 0);
+ break;
+ case GL_GLOB:
+ match = (fnmatch(key_value, val, 0) == 0);
+ break;
+ case GL_SPLIT:
+ {
+ const char *split;
+ size_t len;
+
+ split = &rules->buf[token->key.value_off];
+ len = strlen(val);
+ for (;;) {
+ const char *next;
+
+ next = strchr(split, '|');
+ if (next != NULL) {
+ size_t matchlen = (size_t)(next - split);
+
+ match = (matchlen == len && strncmp(split, val, matchlen) == 0);
+ if (match)
+ break;
+ } else {
+ match = (strcmp(split, val) == 0);
+ break;
+ }
+ split = &next[1];
+ }
+ break;
+ }
+ case GL_SPLIT_GLOB:
+ {
+ char value[UTIL_PATH_SIZE];
+
+ util_strscpy(value, sizeof(value), &rules->buf[token->key.value_off]);
+ key_value = value;
+ while (key_value != NULL) {
+ pos = strchr(key_value, '|');
+ if (pos != NULL) {
+ pos[0] = '\0';
+ pos = &pos[1];
+ }
+ dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str(token->type), key_value, val);
+ match = (fnmatch(key_value, val, 0) == 0);
+ if (match)
+ break;
+ key_value = pos;
+ }
+ break;
+ }
+ case GL_SOMETHING:
+ match = (val[0] != '\0');
+ break;
+ case GL_UNSET:
+ return -1;
+ }
+
+ if (match && (token->key.op == OP_MATCH)) {
+ dbg(rules->udev, "%s is true (matching value)\n", token_str(token->type));
+ return 0;
+ }
+ if (!match && (token->key.op == OP_NOMATCH)) {
+ dbg(rules->udev, "%s is true (non-matching value)\n", token_str(token->type));
+ return 0;
+ }
+ dbg(rules->udev, "%s is not true\n", token_str(token->type));
+ return -1;
+}
+
+static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
+{
+ const char *name;
+ char nbuf[UTIL_NAME_SIZE];
+ const char *value;
+ char vbuf[UTIL_NAME_SIZE];
+ size_t len;
+
+ name = &rules->buf[cur->key.attr_off];
+ switch (cur->key.attrsubst) {
+ case SB_FORMAT:
+ udev_event_apply_format(event, name, nbuf, sizeof(nbuf));
+ name = nbuf;
+ /* fall through */
+ case SB_NONE:
+ value = udev_device_get_sysattr_value(dev, name);
+ if (value == NULL)
+ return -1;
+ break;
+ case SB_SUBSYS:
+ if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0)
+ return -1;
+ value = vbuf;
+ break;
+ default:
+ return -1;
+ }
+
+ /* 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->buf[cur->key.value_off];
+ klen = strlen(key_value);
+ if (klen > 0 && !isspace(key_value[klen-1])) {
+ if (value != vbuf) {
+ util_strscpy(vbuf, sizeof(vbuf), value);
+ value = vbuf;
+ }
+ while (len > 0 && isspace(vbuf[--len]))
+ vbuf[len] = '\0';
+ dbg(rules->udev, "removed trailing whitespace from '%s'\n", value);
+ }
+ }
+
+ return match_key(rules, cur, value);
+}
+
+enum escape_type {
+ ESCAPE_UNSET,
+ ESCAPE_NONE,
+ ESCAPE_REPLACE,
+};
+
+int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event, const sigset_t *sigmask)
+{
+ struct token *cur;
+ struct token *rule;
+ enum escape_type esc = ESCAPE_UNSET;
+ bool can_set_name;
+
+ if (rules->tokens == NULL)
+ return -1;
+
+ can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) &&
+ (major(udev_device_get_devnum(event->dev)) > 0 ||
+ udev_device_get_ifindex(event->dev) > 0));
+
+ /* loop through token list, match, run actions or forward to next rule */
+ cur = &rules->tokens[0];
+ rule = cur;
+ for (;;) {
+ dump_token(rules, cur);
+ switch (cur->type) {
+ case TK_RULE:
+ /* current rule */
+ rule = cur;
+ /* 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, udev_device_get_action(event->dev)) != 0)
+ goto nomatch;
+ break;
+ case TK_M_DEVPATH:
+ if (match_key(rules, cur, udev_device_get_devpath(event->dev)) != 0)
+ goto nomatch;
+ break;
+ case TK_M_KERNEL:
+ if (match_key(rules, cur, udev_device_get_sysname(event->dev)) != 0)
+ goto nomatch;
+ break;
+ case TK_M_DEVLINK: {
+ size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
+ struct udev_list_entry *list_entry;
+ bool match = false;
+
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) {
+ const char *devlink;
+
+ devlink = &udev_list_entry_get_name(list_entry)[devlen];
+ if (match_key(rules, cur, devlink) == 0) {
+ match = true;
+ break;
+ }
+ }
+ if (!match)
+ goto nomatch;
+ break;
+ }
+ case TK_M_NAME:
+ if (match_key(rules, cur, event->name) != 0)
+ goto nomatch;
+ break;
+ case TK_M_ENV: {
+ const char *key_name = &rules->buf[cur->key.attr_off];
+ const char *value;
+
+ value = udev_device_get_property_value(event->dev, key_name);
+ if (value == NULL) {
+ dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
+ value = "";
+ }
+ if (match_key(rules, cur, value))
+ goto nomatch;
+ break;
+ }
+ case TK_M_TAG: {
+ struct udev_list_entry *list_entry;
+ bool match = false;
+
+ udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) {
+ if (strcmp(&rules->buf[cur->key.value_off], udev_list_entry_get_name(list_entry)) == 0) {
+ match = true;
+ break;
+ }
+ }
+ if (!match && (cur->key.op != OP_NOMATCH))
+ goto nomatch;
+ break;
+ }
+ case TK_M_SUBSYSTEM:
+ if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0)
+ goto nomatch;
+ break;
+ case TK_M_DRIVER:
+ if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
+ goto nomatch;
+ break;
+ case TK_M_WAITFOR: {
+ char filename[UTIL_PATH_SIZE];
+ int found;
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
+ found = (wait_for_file(event->dev, filename, 10) == 0);
+ if (!found && (cur->key.op != OP_NOMATCH))
+ goto nomatch;
+ break;
+ }
+ case TK_M_ATTR:
+ if (match_attr(rules, event->dev, event, cur) != 0)
+ 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 = event->dev;
+ for (;;) {
+ struct token *key;
+
+ dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent));
+ /* 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 (match_key(rules, key, udev_device_get_sysname(event->dev_parent)) != 0)
+ goto try_parent;
+ break;
+ case TK_M_SUBSYSTEMS:
+ if (match_key(rules, key, udev_device_get_subsystem(event->dev_parent)) != 0)
+ goto try_parent;
+ break;
+ case TK_M_DRIVERS:
+ if (match_key(rules, key, udev_device_get_driver(event->dev_parent)) != 0)
+ goto try_parent;
+ break;
+ case TK_M_ATTRS:
+ if (match_attr(rules, event->dev_parent, event, key) != 0)
+ goto try_parent;
+ break;
+ case TK_M_TAGS: {
+ bool match = udev_device_has_tag(event->dev_parent, &rules->buf[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;
+ }
+ dbg(event->udev, "parent key matched\n");
+ }
+ dbg(event->udev, "all parent keys matched\n");
+ break;
+
+ try_parent:
+ event->dev_parent = udev_device_get_parent(event->dev_parent);
+ if (event->dev_parent == NULL)
+ goto nomatch;
+ }
+ /* move behind our sequence of parent match keys */
+ cur = next;
+ continue;
+ }
+ case TK_M_TEST: {
+ char filename[UTIL_PATH_SIZE];
+ struct stat statbuf;
+ int match;
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename));
+ if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) {
+ if (filename[0] != '/') {
+ char tmp[UTIL_PATH_SIZE];
+
+ util_strscpy(tmp, sizeof(tmp), filename);
+ util_strscpyl(filename, sizeof(filename),
+ udev_device_get_syspath(event->dev), "/", tmp, NULL);
+ }
+ }
+ attr_subst_subdir(filename, sizeof(filename));
+
+ match = (stat(filename, &statbuf) == 0);
+ dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
+ if (match && cur->key.mode > 0) {
+ match = ((statbuf.st_mode & cur->key.mode) > 0);
+ dbg(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
+ match ? "matches" : "does not match", cur->key.mode);
+ }
+ if (match && cur->key.op == OP_NOMATCH)
+ goto nomatch;
+ if (!match && cur->key.op == OP_MATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_EVENT_TIMEOUT:
+ info(event->udev, "OPTIONS event_timeout=%u\n", cur->key.event_timeout);
+ event->timeout_usec = cur->key.event_timeout * 1000 * 1000;
+ break;
+ case TK_M_PROGRAM: {
+ char program[UTIL_PATH_SIZE];
+ char **envp;
+ char result[UTIL_PATH_SIZE];
+
+ free(event->program_result);
+ event->program_result = NULL;
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], program, sizeof(program));
+ envp = udev_device_get_properties_envp(event->dev);
+ info(event->udev, "PROGRAM '%s' %s:%u\n",
+ program,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+
+ if (udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)) < 0) {
+ if (cur->key.op != OP_NOMATCH)
+ goto nomatch;
+ } else {
+ int count;
+
+ util_remove_trailing_chars(result, '\n');
+ if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
+ count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n" , count);
+ }
+ event->program_result = strdup(result);
+ dbg(event->udev, "storing result '%s'\n", event->program_result);
+ if (cur->key.op == OP_NOMATCH)
+ goto nomatch;
+ }
+ break;
+ }
+ case TK_M_IMPORT_FILE: {
+ char import[UTIL_PATH_SIZE];
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
+ if (import_file_into_properties(event->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->buf[cur->key.value_off], import, sizeof(import));
+ info(event->udev, "IMPORT '%s' %s:%u\n",
+ import,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+
+ if (import_program_into_properties(event, import, sigmask) != 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)) {
+ info(event->udev, "IMPORT builtin skip '%s' %s:%u\n",
+ udev_builtin_name(cur->key.builtin_cmd),
+ &rules->buf[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);
+ }
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], command, sizeof(command));
+ info(event->udev, "IMPORT builtin '%s' %s:%u\n",
+ udev_builtin_name(cur->key.builtin_cmd),
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+
+ if (udev_builtin_run(event->dev, cur->key.builtin_cmd, command, false) != 0) {
+ /* remember failure */
+ info(rules->udev, "IMPORT builtin '%s' returned non-zero\n",
+ 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 = &rules->buf[cur->key.value_off];
+ const char *value;
+
+ value = udev_device_get_property_value(event->dev_db, key);
+ if (value != NULL) {
+ struct udev_list_entry *entry;
+
+ entry = udev_device_add_property(event->dev, key, value);
+ udev_list_entry_set_num(entry, true);
+ } else {
+ if (cur->key.op != OP_NOMATCH)
+ goto nomatch;
+ }
+ break;
+ }
+ case TK_M_IMPORT_CMDLINE: {
+ FILE *f;
+ bool imported = false;
+
+ f = fopen("/proc/cmdline", "r");
+ if (f != NULL) {
+ char cmdline[4096];
+
+ if (fgets(cmdline, sizeof(cmdline), f) != NULL) {
+ const char *key = &rules->buf[cur->key.value_off];
+ char *pos;
+
+ pos = strstr(cmdline, key);
+ if (pos != NULL) {
+ struct udev_list_entry *entry;
+
+ pos += strlen(key);
+ if (pos[0] == '\0' || isspace(pos[0])) {
+ /* we import simple flags as 'FLAG=1' */
+ entry = udev_device_add_property(event->dev, key, "1");
+ udev_list_entry_set_num(entry, true);
+ imported = true;
+ } else if (pos[0] == '=') {
+ const char *value;
+
+ pos++;
+ value = pos;
+ while (pos[0] != '\0' && !isspace(pos[0]))
+ pos++;
+ pos[0] = '\0';
+ entry = udev_device_add_property(event->dev, key, value);
+ udev_list_entry_set_num(entry, true);
+ imported = true;
+ }
+ }
+ }
+ fclose(f);
+ }
+ if (!imported && cur->key.op != OP_NOMATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_IMPORT_PARENT: {
+ char import[UTIL_PATH_SIZE];
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import));
+ if (import_parent_into_properties(event->dev, import) != 0)
+ if (cur->key.op != OP_NOMATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_RESULT:
+ if (match_key(rules, cur, event->program_result) != 0)
+ 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:
+ udev_device_set_db_persist(event->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:
+ udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio);
+ break;
+ case TK_A_OWNER: {
+ char owner[UTIL_NAME_SIZE];
+
+ if (event->owner_final)
+ break;
+ if (cur->key.op == OP_ASSIGN_FINAL)
+ event->owner_final = true;
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], owner, sizeof(owner));
+ event->uid = util_lookup_user(event->udev, owner);
+ info(event->udev, "OWNER %u %s:%u\n",
+ event->uid,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ break;
+ }
+ case TK_A_GROUP: {
+ char group[UTIL_NAME_SIZE];
+
+ if (event->group_final)
+ break;
+ if (cur->key.op == OP_ASSIGN_FINAL)
+ event->group_final = true;
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], group, sizeof(group));
+ event->gid = util_lookup_group(event->udev, group);
+ info(event->udev, "GROUP %u %s:%u\n",
+ event->gid,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ break;
+ }
+ case TK_A_MODE: {
+ char mode_str[UTIL_NAME_SIZE];
+ mode_t mode;
+ char *endptr;
+
+ if (event->mode_final)
+ break;
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], mode_str, sizeof(mode_str));
+ mode = strtol(mode_str, &endptr, 8);
+ if (endptr[0] != '\0') {
+ err(event->udev, "ignoring invalid mode '%s'\n", mode_str);
+ break;
+ }
+ if (cur->key.op == OP_ASSIGN_FINAL)
+ event->mode_final = true;
+ event->mode_set = true;
+ event->mode = mode;
+ info(event->udev, "MODE %#o %s:%u\n",
+ event->mode,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ break;
+ }
+ case TK_A_OWNER_ID:
+ if (event->owner_final)
+ break;
+ if (cur->key.op == OP_ASSIGN_FINAL)
+ event->owner_final = true;
+ event->uid = cur->key.uid;
+ info(event->udev, "OWNER %u %s:%u\n",
+ event->uid,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ break;
+ case TK_A_GROUP_ID:
+ if (event->group_final)
+ break;
+ if (cur->key.op == OP_ASSIGN_FINAL)
+ event->group_final = true;
+ event->gid = cur->key.gid;
+ info(event->udev, "GROUP %u %s:%u\n",
+ event->gid,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ 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;
+ info(event->udev, "MODE %#o %s:%u\n",
+ event->mode,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ break;
+ case TK_A_ENV: {
+ const char *name = &rules->buf[cur->key.attr_off];
+ char *value = &rules->buf[cur->key.value_off];
+
+ if (value[0] != '\0') {
+ char temp_value[UTIL_NAME_SIZE];
+ struct udev_list_entry *entry;
+
+ udev_event_apply_format(event, value, temp_value, sizeof(temp_value));
+ entry = udev_device_add_property(event->dev, name, temp_value);
+ /* store in db, skip private keys */
+ if (name[0] != '.')
+ udev_list_entry_set_num(entry, true);
+ } else {
+ udev_device_add_property(event->dev, name, NULL);
+ }
+ break;
+ }
+ case TK_A_TAG: {
+ char tag[UTIL_PATH_SIZE];
+ const char *p;
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], tag, sizeof(tag));
+ if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
+ udev_device_cleanup_tags_list(event->dev);
+ for (p = tag; *p != '\0'; p++) {
+ if ((*p >= 'a' && *p <= 'z') ||
+ (*p >= 'A' && *p <= 'Z') ||
+ (*p >= '0' && *p <= '9') ||
+ *p == '-' || *p == '_')
+ continue;
+ err(event->udev, "ignoring invalid tag name '%s'\n", tag);
+ break;
+ }
+ udev_device_add_tag(event->dev, tag);
+ break;
+ }
+ case TK_A_NAME: {
+ const char *name = &rules->buf[cur->key.value_off];
+
+ char name_str[UTIL_PATH_SIZE];
+ int count;
+
+ 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));
+ if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
+ count = util_replace_chars(name_str, "/");
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n", count);
+ }
+ if (major(udev_device_get_devnum(event->dev))) {
+ size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
+
+ if (strcmp(name_str, &udev_device_get_devnode(event->dev)[devlen]) != 0) {
+ err(event->udev, "NAME=\"%s\" ignored, kernel device nodes "
+ "can not be renamed; please fix it in %s:%u\n", name,
+ &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
+ break;
+ }
+ }
+ free(event->name);
+ event->name = strdup(name_str);
+ info(event->udev, "NAME '%s' %s:%u\n",
+ event->name,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ break;
+ }
+ case TK_A_DEVLINK: {
+ char temp[UTIL_PATH_SIZE];
+ char filename[UTIL_PATH_SIZE];
+ char *pos, *next;
+ int count = 0;
+
+ if (event->devlink_final)
+ break;
+ if (major(udev_device_get_devnum(event->dev)) == 0)
+ break;
+ if (cur->key.op == OP_ASSIGN_FINAL)
+ event->devlink_final = true;
+ if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
+ udev_device_cleanup_devlinks_list(event->dev);
+
+ /* allow multiple symlinks separated by spaces */
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], temp, sizeof(temp));
+ if (esc == ESCAPE_UNSET)
+ count = util_replace_chars(temp, "/ ");
+ else if (esc == ESCAPE_REPLACE)
+ count = util_replace_chars(temp, "/");
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n" , count);
+ dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp);
+ pos = temp;
+ while (isspace(pos[0]))
+ pos++;
+ next = strchr(pos, ' ');
+ while (next != NULL) {
+ next[0] = '\0';
+ info(event->udev, "LINK '%s' %s:%u\n", pos,
+ &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
+ udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
+ while (isspace(next[1]))
+ next++;
+ pos = &next[1];
+ next = strchr(pos, ' ');
+ }
+ if (pos[0] != '\0') {
+ info(event->udev, "LINK '%s' %s:%u\n", pos,
+ &rules->buf[rule->rule.filename_off], rule->rule.filename_line);
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL);
+ udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique);
+ }
+ break;
+ }
+ case TK_A_ATTR: {
+ const char *key_name = &rules->buf[cur->key.attr_off];
+ char attr[UTIL_PATH_SIZE];
+ char value[UTIL_NAME_SIZE];
+ FILE *f;
+
+ if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0)
+ util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL);
+ attr_subst_subdir(attr, sizeof(attr));
+
+ udev_event_apply_format(event, &rules->buf[cur->key.value_off], value, sizeof(value));
+ info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value,
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ f = fopen(attr, "w");
+ if (f != NULL) {
+ if (fprintf(f, "%s", value) <= 0)
+ err(event->udev, "error writing ATTR{%s}: %m\n", attr);
+ fclose(f);
+ } else {
+ err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr);
+ }
+ break;
+ }
+ case TK_A_RUN: {
+ if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
+ udev_list_cleanup(&event->run_list);
+ info(event->udev, "RUN '%s' %s:%u\n",
+ &rules->buf[cur->key.value_off],
+ &rules->buf[rule->rule.filename_off],
+ rule->rule.filename_line);
+ udev_list_entry_add(&event->run_list, &rules->buf[cur->key.value_off], NULL);
+ break;
+ }
+ case TK_A_GOTO:
+ if (cur->key.rule_goto == 0)
+ break;
+ cur = &rules->tokens[cur->key.rule_goto];
+ continue;
+ case TK_END:
+ return 0;
+
+ case TK_M_PARENTS_MIN:
+ case TK_M_PARENTS_MAX:
+ case TK_M_MAX:
+ case TK_UNSET:
+ err(rules->udev, "wrong type %u\n", cur->type);
+ goto nomatch;
+ }
+
+ cur++;
+ continue;
+ nomatch:
+ /* fast-forward to next rule */
+ cur = rule + rule->rule.token_count;
+ dbg(rules->udev, "forward to rule: %u\n",
+ (unsigned int) (cur - rules->tokens));
+ }
+}
+
+void udev_rules_apply_static_dev_perms(struct udev_rules *rules)
+{
+ struct token *cur;
+ struct token *rule;
+ uid_t uid = 0;
+ gid_t gid = 0;
+ mode_t mode = 0;
+
+ if (rules->tokens == NULL)
+ return;
+
+ 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;
+ 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_STATIC_NODE: {
+ char filename[UTIL_PATH_SIZE];
+ struct stat stats;
+
+ /* we assure, that the permissions tokens are sorted before the static token */
+ if (mode == 0 && uid == 0 && gid == 0)
+ goto next;
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/",
+ &rules->buf[cur->key.value_off], NULL);
+ if (stat(filename, &stats) != 0)
+ goto next;
+ if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode))
+ goto next;
+ if (mode == 0) {
+ if (gid > 0)
+ mode = 0660;
+ else
+ mode = 0600;
+ }
+ if (mode != (stats.st_mode & 01777)) {
+ chmod(filename, mode);
+ info(rules->udev, "chmod '%s' %#o\n", filename, mode);
+ }
+
+ if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) {
+ chown(filename, uid, gid);
+ info(rules->udev, "chown '%s' %u %u\n", filename, uid, gid);
+ }
+
+ utimensat(AT_FDCWD, filename, NULL, 0);
+ break;
+ }
+ case TK_END:
+ return;
+ }
+
+ cur++;
+ continue;
+next:
+ /* fast-forward to next rule */
+ cur = rule + rule->rule.token_count;
+ continue;
+ }
+}