/*
- * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2003-2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
*
* 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
#include "udev.h"
-struct udev_rules {
- struct udev *udev;
- char *buf;
- size_t bufsize;
- int resolve_names;
-};
-
-struct udev_rules_iter {
- struct udev_rules *rules;
- size_t current;
-};
+#define PREALLOC_TOKEN 2048
+#define PREALLOC_STRBUF 32 * 1024
enum key_operation {
KEY_OP_UNSET,
KEY_OP_ASSIGN_FINAL,
};
-struct key {
- enum key_operation operation;
- size_t val_off;
+static const char *operation_str[] = {
+ [KEY_OP_MATCH] = "match",
+ [KEY_OP_NOMATCH] = "nomatch",
+ [KEY_OP_ADD] = "add",
+ [KEY_OP_ASSIGN] = "assign",
+ [KEY_OP_ASSIGN_FINAL] = "assign-final",
};
-struct key_pair {
- struct key key;
- size_t key_name_off;
+enum token_type {
+ TK_UNDEF,
+ TK_RULE,
+
+ TK_M_WAITFOR, /* val */
+ 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_SUBSYSTEM, /* val */
+ TK_M_DRIVER, /* val */
+ TK_M_ATTR, /* val, attr */
+
+ TK_M_KERNELS, /* val */
+ TK_M_SUBSYSTEMS, /* val */
+ TK_M_DRIVERS, /* val */
+ TK_M_ATTRS, /* val, attr */
+ TK_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_PARENT, /* val */
+ TK_M_RESULT, /* val */
+
+ TK_A_IGNORE_DEVICE,
+ TK_A_STRING_ESCAPE_NONE,
+ TK_A_STRING_ESCAPE_REPLACE,
+ TK_A_NUM_FAKE_PART, /* 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_ENV, /* val, attr */
+ TK_A_NAME, /* val */
+ TK_A_DEVLINK, /* val */
+ TK_A_EVENT_TIMEOUT, /* int */
+ TK_A_IGNORE_REMOVE,
+ TK_A_ATTR, /* val, attr */
+ TK_A_RUN, /* val, bool */
+ TK_A_GOTO, /* size_t */
+ TK_A_LAST_RULE,
+
+ TK_END,
};
-#define PAIRS_MAX 5
-struct key_pairs {
- int count;
- struct key_pair keys[PAIRS_MAX];
+static const char *token_str[] = {
+ [TK_UNDEF] = "UNDEF",
+ [TK_RULE] = "RULE",
+
+ [TK_M_WAITFOR] = "M WAITFOR",
+ [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_SUBSYSTEM] = "M SUBSYSTEM",
+ [TK_M_DRIVER] = "M DRIVER",
+ [TK_M_ATTR] = "M ATTR",
+
+ [TK_M_KERNELS] = "M KERNELS",
+ [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS",
+ [TK_M_DRIVERS] = "M DRIVERS",
+ [TK_M_ATTRS] = "M ATTRS",
+ [TK_PARENTS_MAX] = "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_PARENT] = "M MPORT_PARENT",
+ [TK_M_RESULT] = "M RESULT",
+
+ [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE",
+ [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE",
+ [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE",
+ [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART",
+ [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_MODE_ID] = "A MODE_ID",
+ [TK_A_ENV] = "A ENV",
+ [TK_A_NAME] = "A NAME",
+ [TK_A_DEVLINK] = "A DEVLINK",
+ [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT",
+ [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE",
+ [TK_A_ATTR] = "A ATTR",
+ [TK_A_RUN] = "A RUN",
+ [TK_A_GOTO] = "A GOTO",
+ [TK_A_LAST_RULE] = "A LAST_RULE",
+
+ [TK_END] = "END",
};
-enum import_type {
- IMPORT_UNSET,
- IMPORT_PROGRAM,
- IMPORT_FILE,
- IMPORT_PARENT,
+struct token {
+ enum token_type type;
+ union {
+ struct {
+ unsigned int next_rule;
+ unsigned int label_off;
+ unsigned int filename_off;
+ } rule;
+ struct {
+ enum key_operation op;
+ unsigned int value_off;
+ union {
+ unsigned int attr_off;
+ int ignore_error;
+ int i;
+ unsigned int rule_goto;
+ mode_t mode;
+ uid_t uid;
+ gid_t gid;
+ int num_fake_part;
+ int devlink_prio;
+ int event_timeout;
+ };
+ } key;
+ };
};
-enum escape_type {
- ESCAPE_UNSET,
- ESCAPE_NONE,
- ESCAPE_REPLACE,
+#define MAX_TK 64
+struct rule_tmp {
+ struct udev_rules *rules;
+ struct token rule;
+ struct token token[MAX_TK];
+ unsigned int token_cur;
};
-struct udev_rule {
- struct key action;
- struct key devpath;
- struct key kernel;
- struct key subsystem;
- struct key driver;
- struct key_pairs attr;
-
- struct key kernels;
- struct key subsystems;
- struct key drivers;
- struct key_pairs attrs;
-
- struct key_pairs env;
- struct key program;
- struct key result;
- struct key import;
- enum import_type import_type;
- struct key test;
- mode_t test_mode_mask;
- struct key run;
- struct key wait_for;
- struct key label;
- struct key goto_label;
- size_t goto_rule_off;
-
- struct key name;
- struct key symlink;
- struct key symlink_match;
- struct key owner;
- struct key group;
- struct key mode;
- enum escape_type string_escape;
-
- unsigned int link_priority;
- int event_timeout;
- unsigned int partitions;
- unsigned int last_rule:1,
- run_ignore_error:1,
- ignore_device:1,
- ignore_remove:1;
-
- size_t bufsize;
- char buf[];
+struct udev_rules {
+ struct udev *udev;
+ int resolve_names;
+ struct token *tokens;
+ unsigned int token_cur;
+ unsigned int token_max;
+ char *buf;
+ size_t buf_cur;
+ size_t buf_max;
+ unsigned int buf_count;
};
-static void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules)
+/* we could lookup and return existing strings, or tails of strings */
+static int add_string(struct udev_rules *rules, const char *str)
{
- dbg(rules->udev, "bufsize=%zi\n", rules->bufsize);
- iter->rules = rules;
- iter->current = 0;
-}
+ size_t len = strlen(str)+1;
+ int off;
-static struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter)
-{
- struct udev_rules *rules;
- struct udev_rule *rule;
+ if (rules->buf_cur + len+1 >= rules->buf_max) {
+ char *buf;
+ unsigned int add;
- rules = iter->rules;
- if (!rules)
- return NULL;
+ /* double the buffer size */
+ add = rules->buf_max;
+ if (add < len)
+ add = len;
- dbg(rules->udev, "current=%zi\n", iter->current);
- if (iter->current >= rules->bufsize) {
- dbg(rules->udev, "no more rules\n");
- return NULL;
+ buf = realloc(rules->buf, rules->buf_max + add);
+ if (buf == NULL)
+ return -1;
+ info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add);
+ rules->buf = buf;
+ rules->buf_max += add;
}
-
- /* get next rule */
- rule = (struct udev_rule *) (rules->buf + iter->current);
- iter->current += sizeof(struct udev_rule) + rule->bufsize;
-
- return rule;
+ off = rules->buf_cur;
+ memcpy(&rules->buf[rules->buf_cur], str, len);
+ rules->buf_cur += len;
+ rules->buf_count++;
+ return off;
}
-static struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off)
+static int add_token(struct udev_rules *rules, struct token *token)
{
- struct udev_rules *rules = iter->rules;
- struct udev_rule *rule;
-
- dbg(rules->udev, "current=%zi\n", iter->current);
- iter->current = rule_off;
- rule = (struct udev_rule *) (rules->buf + iter->current);
- return rule;
-}
+ if (rules->token_cur+1 >= rules->token_max) {
+ struct token *tokens;
+ unsigned int add;
-static size_t find_label(const struct udev_rules_iter *iter, const char *label)
-{
- struct udev_rule *rule;
- struct udev_rules *rules = iter->rules;
- size_t current = iter->current;
-
-next:
- dbg(rules->udev, "current=%zi\n", current);
- if (current >= rules->bufsize) {
- dbg(rules->udev, "LABEL='%s' not found\n", label);
- return 0;
- }
- rule = (struct udev_rule *) (rules->buf + current);
+ /* double the buffer size */
+ add = rules->token_max;
+ if (add < 1)
+ add = 1;
- if (strcmp(&rule->buf[rule->label.val_off], label) != 0) {
- dbg(rules->udev, "moving forward, looking for label '%s'\n", label);
- current += sizeof(struct udev_rule) + rule->bufsize;
- goto next;
+ tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
+ if (tokens == NULL)
+ return -1;
+ info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add);
+ rules->tokens = tokens;
+ rules->token_max += add;
}
-
- dbg(rules->udev, "found label '%s'\n", label);
- return current;
+ memcpy(&rules->tokens[rules->token_cur], token, sizeof(struct token));
+ rules->token_cur++;
+ return 0;
}
static int import_property_from_string(struct udev_device *dev, char *line)
return 0;
}
-static int import_file_into_env(struct udev_device *dev, const char *filename)
+static int import_file_into_properties(struct udev_device *dev, const char *filename)
{
FILE *f;
char line[UTIL_LINE_SIZE];
return 0;
}
-static int import_program_into_env(struct udev_device *dev, const char *program)
+static int import_program_into_properties(struct udev_device *dev, const char *program)
{
struct udev *udev = udev_device_get_udev(dev);
char **envp;
return 0;
}
-static int import_parent_into_env(struct udev_device *dev, const char *filter)
+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;
}
#define WAIT_LOOP_PER_SECOND 50
-static int wait_for_file(struct udev_event *event, const char *file, int timeout)
+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;
/* a relative path is a device attribute */
if (file[0] != '/') {
- util_strlcpy(devicepath, udev_get_sys_path(event->udev), sizeof(devicepath));
- util_strlcat(devicepath, udev_device_get_devpath(event->dev), sizeof(devicepath));
+ util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath));
+ util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath));
util_strlcpy(filepath, devicepath, sizeof(filepath));
util_strlcat(filepath, "/", sizeof(filepath));
file = filepath;
}
- dbg(event->udev, "will wait %i sec for '%s'\n", timeout, file);
+ dbg(udev, "will wait %i sec for '%s'\n", timeout, file);
while (--loop) {
/* lookup file */
if (stat(file, &stats) == 0) {
- info(event->udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
+ 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(event->udev, "device disappeared while waiting for '%s'\n", file);
+ info(udev, "device disappeared while waiting for '%s'\n", file);
return -2;
}
- info(event->udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
+ info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND);
usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
}
- info(event->udev, "waiting for '%s' failed\n", file);
+ info(udev, "waiting for '%s' failed\n", file);
return -1;
}
return found;
}
-static char *key_val(struct udev_rule *rule, struct key *key)
-{
- return rule->buf + key->val_off;
-}
-
-static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
-{
- return rule->buf + pair->key_name_off;
-}
-
-static int match_key(struct udev *udev, const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
+static int get_key(struct udev *udev, char **line, char **key, enum key_operation *op, char **value)
{
- char value[UTIL_PATH_SIZE];
- char *key_value;
- char *pos;
- int match = 0;
+ char *linepos;
+ char *temp;
- if (key->operation != KEY_OP_MATCH &&
- key->operation != KEY_OP_NOMATCH)
- return 0;
+ linepos = *line;
+ if (linepos == NULL && linepos[0] == '\0')
+ return -1;
- if (val == NULL)
- val = "";
+ /* skip whitespace */
+ while (isspace(linepos[0]) || linepos[0] == ',')
+ linepos++;
- /* look for a matching string, parts are separated by '|' */
- util_strlcpy(value, rule->buf + key->val_off, sizeof(value));
- key_value = value;
- dbg(udev, "key %s value='%s'\n", key_name, key_value);
- while (key_value != NULL) {
- pos = strchr(key_value, '|');
- if (pos != NULL) {
- pos[0] = '\0';
- pos = &pos[1];
- }
+ /* get the key */
+ if (linepos[0] == '\0')
+ return -1;
+ *key = linepos;
- dbg(udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
- match = (fnmatch(key_value, val, 0) == 0);
- if (match)
+ while (1) {
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+ if (isspace(linepos[0]))
break;
-
- key_value = pos;
- }
-
- if (match && (key->operation == KEY_OP_MATCH)) {
- dbg(udev, "%s is true (matching value)\n", key_name);
- return 0;
- }
- if (!match && (key->operation == KEY_OP_NOMATCH)) {
- dbg(udev, "%s is true (non-matching value)\n", key_name);
- return 0;
- }
- return -1;
-}
-
-/* match a single rule against a given device and possibly its parent devices */
-static int match_rule(struct udev_event *event, struct udev_rule *rule)
-{
- struct udev_device *dev = event->dev;
- int i;
-
- if (match_key(event->udev, "ACTION", rule, &rule->action, udev_device_get_action(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "KERNEL", rule, &rule->kernel, udev_device_get_sysname(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "SUBSYSTEM", rule, &rule->subsystem, udev_device_get_subsystem(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "DEVPATH", rule, &rule->devpath, udev_device_get_devpath(dev)))
- goto nomatch;
-
- if (match_key(event->udev, "DRIVER", rule, &rule->driver, udev_device_get_driver(dev)))
- goto nomatch;
-
- /* match NAME against a value assigned by an earlier rule */
- if (match_key(event->udev, "NAME", rule, &rule->name, event->name))
- goto nomatch;
-
- /* match against current list of symlinks */
- if (rule->symlink_match.operation == KEY_OP_MATCH ||
- rule->symlink_match.operation == KEY_OP_NOMATCH) {
- size_t devlen = strlen(udev_get_dev_path(event->udev))+1;
- struct udev_list_entry *list_entry;
- int match = 0;
-
- udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
- const char *devlink;
-
- devlink = &udev_list_entry_get_name(list_entry)[devlen];
- if (match_key(event->udev, "SYMLINK", rule, &rule->symlink_match, devlink) == 0) {
- match = 1;
+ if (linepos[0] == '=')
+ break;
+ if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
+ if (linepos[1] == '=')
break;
- }
- }
- if (!match)
- goto nomatch;
- }
-
- for (i = 0; i < rule->env.count; i++) {
- struct key_pair *pair = &rule->env.keys[i];
-
- /* we only check for matches, assignments will be handled later */
- if (pair->key.operation == KEY_OP_MATCH ||
- pair->key.operation == KEY_OP_NOMATCH) {
- struct udev_list_entry *list_entry;
- const char *key_name = key_pair_name(rule, pair);
- const char *value;
-
- list_entry = udev_device_get_properties_list_entry(event->dev);
- list_entry = udev_list_entry_get_by_name(list_entry, key_name);
- value = udev_list_entry_get_value(list_entry);
- if (value == NULL) {
- dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name);
- value = "";
- }
- if (match_key(event->udev, "ENV", rule, &pair->key, value))
- goto nomatch;
- }
- }
-
- if (rule->test.operation == KEY_OP_MATCH ||
- rule->test.operation == KEY_OP_NOMATCH) {
- char filename[UTIL_PATH_SIZE];
- struct stat statbuf;
- int match;
-
- util_strlcpy(filename, key_val(rule, &rule->test), sizeof(filename));
- udev_event_apply_format(event, filename, sizeof(filename));
- if (udev_event_apply_subsys_kernel(event, NULL, filename, sizeof(filename), 0) != 0)
- if (filename[0] != '/') {
- char tmp[UTIL_PATH_SIZE];
-
- util_strlcpy(tmp, udev_device_get_syspath(dev), sizeof(tmp));
- util_strlcat(tmp, "/", sizeof(tmp));
- util_strlcat(tmp, filename, sizeof(tmp));
- util_strlcpy(filename, tmp, sizeof(filename));
- }
-
- attr_subst_subdir(filename, sizeof(filename));
-
- match = (stat(filename, &statbuf) == 0);
- info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n");
- if (match && rule->test_mode_mask > 0) {
- match = ((statbuf.st_mode & rule->test_mode_mask) > 0);
- info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
- match ? "matches" : "does not match",
- rule->test_mode_mask);
- }
- if (match && rule->test.operation == KEY_OP_NOMATCH)
- goto nomatch;
- if (!match && rule->test.operation == KEY_OP_MATCH)
- goto nomatch;
- dbg(event->udev, "TEST key is true\n");
}
- if (rule->wait_for.operation != KEY_OP_UNSET) {
- char filename[UTIL_PATH_SIZE];
- int found;
+ /* remember end of key */
+ temp = linepos;
- util_strlcpy(filename, key_val(rule, &rule->wait_for), sizeof(filename));
- udev_event_apply_format(event, filename, sizeof(filename));
- found = (wait_for_file(event, filename, 10) == 0);
- if (!found && (rule->wait_for.operation != KEY_OP_NOMATCH))
- goto nomatch;
- }
+ /* skip whitespace after key */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
- /* check for matching sysfs attribute pairs */
- for (i = 0; i < rule->attr.count; i++) {
- struct key_pair *pair = &rule->attr.keys[i];
+ /* get operation type */
+ if (linepos[0] == '=' && linepos[1] == '=') {
+ *op = KEY_OP_MATCH;
+ linepos += 2;
+ } else if (linepos[0] == '!' && linepos[1] == '=') {
+ *op = KEY_OP_NOMATCH;
+ linepos += 2;
+ } else if (linepos[0] == '+' && linepos[1] == '=') {
+ *op = KEY_OP_ADD;
+ linepos += 2;
+ } else if (linepos[0] == '=') {
+ *op = KEY_OP_ASSIGN;
+ linepos++;
+ } else if (linepos[0] == ':' && linepos[1] == '=') {
+ *op = KEY_OP_ASSIGN_FINAL;
+ linepos += 2;
+ } else
+ return -1;
- if (pair->key.operation == KEY_OP_MATCH ||
- pair->key.operation == KEY_OP_NOMATCH) {
- char attr[UTIL_PATH_SIZE];
- const char *key_name = key_pair_name(rule, pair);
- const char *key_value = key_val(rule, &pair->key);
- char value[UTIL_NAME_SIZE] = "";
- size_t len;
+ /* terminate key */
+ temp[0] = '\0';
- util_strlcpy(attr, key_name, sizeof(attr));
- udev_event_apply_subsys_kernel(event, attr, value, sizeof(value), 1);
+ /* skip whitespace after operator */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
- if (value[0]=='\0') {
- const char *val;
+ /* get the value*/
+ if (linepos[0] == '"')
+ linepos++;
+ else
+ return -1;
+ *value = linepos;
- val = udev_device_get_sysattr_value(dev, key_name);
- if (val != NULL)
- util_strlcpy(value, val, sizeof(value));
- }
+ temp = strchr(linepos, '"');
+ if (!temp)
+ return -1;
+ temp[0] = '\0';
+ temp++;
+ dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value);
- if (value[0]=='\0')
- goto nomatch;
+ /* move line to next key */
+ *line = temp;
+ return 0;
+}
- /* strip trailing whitespace of value, if not asked to match for it */
- len = strlen(key_value);
- if (len > 0 && !isspace(key_value[len-1])) {
- len = strlen(value);
- while (len > 0 && isspace(value[--len]))
- value[len] = '\0';
- dbg(event->udev, "removed trailing whitespace from '%s'\n", value);
- }
+/* extract possible KEY{attr} */
+static char *get_key_attribute(struct udev *udev, char *str)
+{
+ char *pos;
+ char *attr;
- if (match_key(event->udev, "ATTR", rule, &pair->key, value))
- goto nomatch;
+ 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;
+}
- /* walk up the chain of parent devices and find a match */
- event->dev_parent = dev;
- while (1) {
- /* check for matching kernel device name */
- if (match_key(event->udev, "KERNELS", rule,
- &rule->kernels, udev_device_get_sysname(event->dev_parent)))
- goto try_parent;
-
- /* check for matching subsystem value */
- if (match_key(event->udev, "SUBSYSTEMS", rule,
- &rule->subsystems, udev_device_get_subsystem(event->dev_parent)))
- goto try_parent;
-
- /* check for matching driver */
- if (match_key(event->udev, "DRIVERS", rule,
- &rule->drivers, udev_device_get_driver(event->dev_parent)))
- goto try_parent;
-
- /* check for matching sysfs attribute pairs */
- for (i = 0; i < rule->attrs.count; i++) {
- struct key_pair *pair = &rule->attrs.keys[i];
-
- if (pair->key.operation == KEY_OP_MATCH ||
- pair->key.operation == KEY_OP_NOMATCH) {
- const char *key_name = key_pair_name(rule, pair);
- const char *key_value = key_val(rule, &pair->key);
- const char *val;
- char value[UTIL_NAME_SIZE];
- size_t len;
-
- val = udev_device_get_sysattr_value(event->dev_parent, key_name);
- if (val == NULL)
- val = udev_device_get_sysattr_value(dev, key_name);
- if (val == NULL)
- goto try_parent;
- util_strlcpy(value, val, sizeof(value));
-
- /* strip trailing whitespace of value, if not asked to match for it */
- len = strlen(key_value);
- if (len > 0 && !isspace(key_value[len-1])) {
- len = strlen(value);
- while (len > 0 && isspace(value[--len]))
- value[len] = '\0';
- dbg(event->udev, "removed trailing whitespace from '%s'\n", value);
- }
-
- if (match_key(event->udev, "ATTRS", rule, &pair->key, value))
- goto try_parent;
- }
- }
-
- /* found matching device */
+static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
+ enum key_operation op,
+ const char *value, const void *data)
+{
+ struct token *token = &rule_tmp->token[rule_tmp->token_cur];
+ const char *attr = data;
+ mode_t mode = 0000;
+
+ switch (type) {
+ case TK_M_WAITFOR:
+ case TK_M_ACTION:
+ case TK_M_DEVPATH:
+ case TK_M_KERNEL:
+ case TK_M_SUBSYSTEM:
+ case TK_M_DRIVER:
+ case TK_M_DEVLINK:
+ case TK_M_NAME:
+ case TK_M_KERNELS:
+ case TK_M_SUBSYSTEMS:
+ case TK_M_DRIVERS:
+ case TK_M_PROGRAM:
+ case TK_M_IMPORT_FILE:
+ case TK_M_IMPORT_PROG:
+ 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_DEVLINK:
+ case TK_A_GOTO:
+ token->key.value_off = add_string(rule_tmp->rules, value);
break;
-try_parent:
- /* move to parent device */
- dbg(event->udev, "try parent sysfs device\n");
- event->dev_parent = udev_device_get_parent(event->dev_parent);
- if (event->dev_parent == NULL)
- goto nomatch;
- dbg(event->udev, "looking at dev_parent->devpath='%s'\n",
- udev_device_get_syspath(event->dev_parent));
+ case TK_M_ENV:
+ case TK_M_ATTR:
+ case TK_M_ATTRS:
+ case TK_A_ATTR:
+ case TK_A_ENV:
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ token->key.attr_off = add_string(rule_tmp->rules, attr);
+ break;
+ case TK_M_TEST:
+ if (data != NULL)
+ mode = *(mode_t *)data;
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ token->key.mode = mode;
+ break;
+ case TK_A_IGNORE_DEVICE:
+ case TK_A_STRING_ESCAPE_NONE:
+ case TK_A_STRING_ESCAPE_REPLACE:
+ case TK_A_IGNORE_REMOVE:
+ case TK_A_LAST_RULE:
+ break;
+ case TK_A_RUN:
+ token->key.value_off = add_string(rule_tmp->rules, value);
+ token->key.ignore_error = *(int *)data;
+ break;
+ case TK_A_NUM_FAKE_PART:
+ token->key.num_fake_part = *(int *)data;
+ break;
+ 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_EVENT_TIMEOUT:
+ token->key.event_timeout = *(int *)data;
+ break;
+ case TK_RULE:
+ case TK_PARENTS_MAX:
+ case TK_END:
+ case TK_UNDEF:
+ err(rule_tmp->rules->udev, "wrong type %u\n", type);
+ return -1;
}
-
- /* execute external program */
- if (rule->program.operation != KEY_OP_UNSET) {
- char program[UTIL_PATH_SIZE];
- char **envp;
- char result[UTIL_PATH_SIZE];
-
- util_strlcpy(program, key_val(rule, &rule->program), sizeof(program));
- udev_event_apply_format(event, program, sizeof(program));
- envp = udev_device_get_properties_envp(dev);
- if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
- dbg(event->udev, "PROGRAM is false\n");
- event->program_result[0] = '\0';
- if (rule->program.operation != KEY_OP_NOMATCH)
- goto nomatch;
- } else {
- int count;
-
- dbg(event->udev, "PROGRAM matches\n");
- util_remove_trailing_chars(result, '\n');
- if (rule->string_escape == ESCAPE_UNSET ||
- rule->string_escape == ESCAPE_REPLACE) {
- count = util_replace_chars(result, ALLOWED_CHARS_INPUT);
- if (count > 0)
- info(event->udev, "%i character(s) replaced\n" , count);
- }
- dbg(event->udev, "result is '%s'\n", result);
- util_strlcpy(event->program_result, result, sizeof(event->program_result));
- dbg(event->udev, "PROGRAM returned successful\n");
- if (rule->program.operation == KEY_OP_NOMATCH)
- goto nomatch;
- }
- dbg(event->udev, "PROGRAM key is true\n");
+ token->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;
+}
- /* check for matching result of external program */
- if (match_key(event->udev, "RESULT", rule, &rule->result, event->program_result))
- goto nomatch;
-
- /* import variables returned from program or or file into properties */
- if (rule->import.operation != KEY_OP_UNSET) {
- char import[UTIL_PATH_SIZE];
- int rc = -1;
-
- util_strlcpy(import, key_val(rule, &rule->import), sizeof(import));
- udev_event_apply_format(event, import, sizeof(import));
- dbg(event->udev, "check for IMPORT import='%s'\n", import);
- if (rule->import_type == IMPORT_PROGRAM) {
- rc = import_program_into_env(event->dev, import);
- } else if (rule->import_type == IMPORT_FILE) {
- dbg(event->udev, "import file import='%s'\n", import);
- rc = import_file_into_env(event->dev, import);
- } else if (rule->import_type == IMPORT_PARENT) {
- dbg(event->udev, "import parent import='%s'\n", import);
- rc = import_parent_into_env(event->dev, import);
+#ifdef DEBUG
+static void dump_token(struct udev_rules *rules, struct token *token)
+{
+ enum token_type type = token->type;
+ enum key_operation op = token->key.op;
+ 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 off = tk_ptr - tks_ptr;
+
+ dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n",
+ &rules->buf[token->rule.filename_off],
+ off / (unsigned int) sizeof(struct token), off,
+ token->rule.next_rule,
+ &rules->buf[token->rule.label_off]);
+ break;
}
- if (rc != 0) {
- dbg(event->udev, "IMPORT failed\n");
- if (rule->import.operation != KEY_OP_NOMATCH)
- goto nomatch;
- } else
- dbg(event->udev, "IMPORT '%s' imported\n", key_val(rule, &rule->import));
- dbg(event->udev, "IMPORT key is true\n");
+ case TK_M_WAITFOR:
+ case TK_M_ACTION:
+ case TK_M_DEVPATH:
+ case TK_M_KERNEL:
+ case TK_M_SUBSYSTEM:
+ case TK_M_DRIVER:
+ case TK_M_DEVLINK:
+ case TK_M_NAME:
+ case TK_M_KERNELS:
+ case TK_M_SUBSYSTEMS:
+ case TK_M_DRIVERS:
+ case TK_M_PROGRAM:
+ case TK_M_IMPORT_FILE:
+ case TK_M_IMPORT_PROG:
+ 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'\n", token_str[type], operation_str[op], 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'\n", token_str[type], operation_str[op], attr, value);
+ break;
+ case TK_A_IGNORE_DEVICE:
+ case TK_A_STRING_ESCAPE_NONE:
+ case TK_A_STRING_ESCAPE_REPLACE:
+ case TK_A_LAST_RULE:
+ case TK_A_IGNORE_REMOVE:
+ dbg(rules->udev, "%s\n", token_str[type]);
+ break;
+ case TK_M_TEST:
+ dbg(rules->udev, "%s %s '%s' %#o\n", token_str[type], operation_str[op], value, token->key.mode);
+ break;
+ case TK_A_NUM_FAKE_PART:
+ dbg(rules->udev, "%s %u\n", token_str[type], token->key.num_fake_part);
+ break;
+ case TK_A_DEVLINK_PRIO:
+ dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], 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_EVENT_TIMEOUT:
+ dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], 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_PARENTS_MAX:
+ case TK_UNDEF:
+ dbg(rules->udev, "unknown type %u\n", type);
+ break;
}
+}
- /* rule matches, if we have ENV assignments export it */
- for (i = 0; i < rule->env.count; i++) {
- struct key_pair *pair = &rule->env.keys[i];
-
- if (pair->key.operation == KEY_OP_ASSIGN) {
- char temp_value[UTIL_NAME_SIZE];
- const char *key_name = key_pair_name(rule, pair);
- const char *value = key_val(rule, &pair->key);
-
- /* make sure we don't write to the same string we possibly read from */
- util_strlcpy(temp_value, value, sizeof(temp_value));
- udev_event_apply_format(event, temp_value, sizeof(temp_value));
-
- if (temp_value[0] != '\0') {
- struct udev_list_entry *entry;
+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 void dump_token(struct udev_rules *rules, struct token *token) {}
+static inline void dump_rules(struct udev_rules *rules) {}
+#endif /* DEBUG */
- info(event->udev, "set ENV '%s=%s'\n", key_name, temp_value);
- entry = udev_device_add_property(dev, key_name, temp_value);
- /* store in db */
- udev_list_entry_set_flag(entry, 1);
+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_UNDEF;
+ unsigned int next_idx;
+ unsigned int j;
+
+ /* find smallest value */
+ for (j = start; j < end; j++) {
+ if (rule_tmp->token[j].type == TK_UNDEF)
+ continue;
+ if (next_val == TK_UNDEF || rule_tmp->token[j].type < next_val) {
+ next_val = rule_tmp->token[j].type;
+ next_idx = j;
}
}
- }
- /* if we have ATTR assignments, write value to sysfs file */
- for (i = 0; i < rule->attr.count; i++) {
- struct key_pair *pair = &rule->attr.keys[i];
-
- if (pair->key.operation == KEY_OP_ASSIGN) {
- const char *key_name = key_pair_name(rule, pair);
- char attr[UTIL_PATH_SIZE];
- char value[UTIL_NAME_SIZE];
- FILE *f;
-
- util_strlcpy(attr, key_name, sizeof(attr));
- if (udev_event_apply_subsys_kernel(event, key_name, attr, sizeof(attr), 0) != 0) {
- util_strlcpy(attr, udev_device_get_syspath(dev), sizeof(attr));
- util_strlcat(attr, "/", sizeof(attr));
- util_strlcat(attr, key_name, sizeof(attr));
- }
+ /* add token and mark done */
+ if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
+ return -1;
+ rule_tmp->token[next_idx].type = TK_UNDEF;
- attr_subst_subdir(attr, sizeof(attr));
-
- util_strlcpy(value, key_val(rule, &pair->key), sizeof(value));
- udev_event_apply_format(event, value, sizeof(value));
- info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
- f = fopen(attr, "w");
- if (f != NULL) {
- if (!event->test)
- 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);
- }
+ /* shrink range */
+ if (next_idx == start)
+ start++;
+ if (next_idx+1 == end)
+ end--;
}
return 0;
-
-nomatch:
- return -1;
}
-int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event)
+static int add_rule(struct udev_rules *rules, char *line,
+ const char *filename, unsigned int filename_off, unsigned int lineno)
{
- struct udev_device *dev = event->dev;
- struct udev_rules_iter iter;
- struct udev_rule *rule;
- int name_set = 0;
+ int valid = 0;
+ char *linepos;
+ char *attr;
+ int physdev = 0;
+ struct rule_tmp rule_tmp;
- dbg(event->udev, "device: '%s'\n", udev_device_get_syspath(dev));
+ 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;
- /* look for a matching rule to apply */
- udev_rules_iter_init(&iter, rules);
+ linepos = line;
while (1) {
- rule = udev_rules_iter_next(&iter);
- if (rule == NULL)
+ char *key;
+ char *value;
+ enum key_operation op = KEY_OP_UNSET;
+
+ if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
break;
- if (name_set &&
- (rule->name.operation == KEY_OP_ASSIGN ||
- rule->name.operation == KEY_OP_ASSIGN_FINAL ||
- rule->name.operation == KEY_OP_ADD)) {
- dbg(event->udev, "node name already set, rule ignored\n");
+ if (strcasecmp(key, "ACTION") == 0) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid ACTION operation\n");
+ goto invalid;
+ }
+ rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL);
+ valid = 1;
continue;
}
- dbg(event->udev, "process rule\n");
- if (match_rule(event, rule) == 0) {
- /* apply options */
- if (rule->ignore_device) {
- info(event->udev, "rule applied, '%s' is ignored\n", udev_device_get_sysname(dev));
- event->ignore_device = 1;
- return 0;
- }
- if (rule->ignore_remove) {
- udev_device_set_ignore_remove(dev, 1);
- dbg(event->udev, "remove event should be ignored\n");
- }
- if (rule->link_priority != 0) {
- udev_device_set_devlink_priority(dev, rule->link_priority);
- info(event->udev, "devlink_priority=%i\n", rule->link_priority);
- }
- if (rule->event_timeout >= 0) {
- udev_device_set_event_timeout(dev, rule->event_timeout);
- info(event->udev, "event_timeout=%i\n", rule->event_timeout);
- }
- /* apply all_partitions option only at a disk device */
- if (rule->partitions > 0 &&
- strcmp(udev_device_get_subsystem(dev), "block") == 0 &&
- udev_device_get_sysnum(dev) == NULL) {
- udev_device_set_num_fake_partitions(dev, rule->partitions);
- dbg(event->udev, "creation of partition nodes requested\n");
+ if (strcasecmp(key, "DEVPATH") == 0) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid DEVPATH operation\n");
+ goto invalid;
}
-
- /* apply permissions */
- if (!event->mode_final && rule->mode.operation != KEY_OP_UNSET) {
- if (rule->mode.operation == KEY_OP_ASSIGN_FINAL)
- event->mode_final = 1;
- char buf[20];
- util_strlcpy(buf, key_val(rule, &rule->mode), sizeof(buf));
- udev_event_apply_format(event, buf, sizeof(buf));
- event->mode = strtol(buf, NULL, 8);
- dbg(event->udev, "applied mode=%#o to '%s'\n",
- event->mode, udev_device_get_sysname(dev));
- }
- if (!event->owner_final && rule->owner.operation != KEY_OP_UNSET) {
- if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
- event->owner_final = 1;
- util_strlcpy(event->owner, key_val(rule, &rule->owner), sizeof(event->owner));
- udev_event_apply_format(event, event->owner, sizeof(event->owner));
- dbg(event->udev, "applied owner='%s' to '%s'\n",
- event->owner, udev_device_get_sysname(dev));
- }
- if (!event->group_final && rule->group.operation != KEY_OP_UNSET) {
- if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
- event->group_final = 1;
- util_strlcpy(event->group, key_val(rule, &rule->group), sizeof(event->group));
- udev_event_apply_format(event, event->group, sizeof(event->group));
- dbg(event->udev, "applied group='%s' to '%s'\n",
- event->group, udev_device_get_sysname(dev));
- }
-
- /* collect symlinks */
- if (!event->devlink_final &&
- (rule->symlink.operation == KEY_OP_ASSIGN ||
- rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
- rule->symlink.operation == KEY_OP_ADD)) {
- char temp[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE];
- char *pos, *next;
- int count = 0;
-
- if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
- event->devlink_final = 1;
- if (rule->symlink.operation == KEY_OP_ASSIGN ||
- rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
- info(event->udev, "reset symlink list\n");
- udev_device_cleanup_devlinks_list(dev);
- }
- /* allow multiple symlinks separated by spaces */
- util_strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
- udev_event_apply_format(event, temp, sizeof(temp));
- if (rule->string_escape == ESCAPE_UNSET)
- count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
- else if (rule->string_escape == ESCAPE_REPLACE)
- count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
- 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) {
- next[0] = '\0';
- info(event->udev, "add symlink '%s'\n", pos);
- util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, pos, sizeof(filename));
- udev_device_add_devlink(dev, filename);
- while (isspace(next[1]))
- next++;
- pos = &next[1];
- next = strchr(pos, ' ');
- }
- if (pos[0] != '\0') {
- info(event->udev, "add symlink '%s'\n", pos);
- util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
- util_strlcat(filename, "/", sizeof(filename));
- util_strlcat(filename, pos, sizeof(filename));
- udev_device_add_devlink(dev, filename);
- }
- }
-
- /* set name, later rules with name set will be ignored */
- if (rule->name.operation == KEY_OP_ASSIGN ||
- rule->name.operation == KEY_OP_ASSIGN_FINAL ||
- rule->name.operation == KEY_OP_ADD) {
- int count;
-
- name_set = 1;
- util_strlcpy(event->name, key_val(rule, &rule->name), sizeof(event->name));
- udev_event_apply_format(event, event->name, sizeof(event->name));
- if (rule->string_escape == ESCAPE_UNSET ||
- rule->string_escape == ESCAPE_REPLACE) {
- count = util_replace_chars(event->name, ALLOWED_CHARS_FILE);
- if (count > 0)
- info(event->udev, "%i character(s) replaced\n", count);
- }
-
- info(event->udev, "rule applied, '%s' becomes '%s'\n",
- udev_device_get_sysname(dev), event->name);
- if (strcmp(udev_device_get_subsystem(dev), "net") != 0)
- dbg(event->udev, "'%s' owner='%s', group='%s', mode=%#o partitions=%i\n",
- event->name, event->owner, event->group, event->mode,
- udev_device_get_num_fake_partitions(dev));
- }
-
- if (!event->run_final && rule->run.operation != KEY_OP_UNSET) {
- struct udev_list_entry *list_entry;
-
- if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
- event->run_final = 1;
- if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
- info(event->udev, "reset run list\n");
- udev_list_cleanup_entries(event->udev, &event->run_list);
- }
- dbg(event->udev, "add run '%s'\n", key_val(rule, &rule->run));
- list_entry = udev_list_entry_add(event->udev, &event->run_list,
- key_val(rule, &rule->run), NULL, 1, 0);
- if (rule->run_ignore_error && list_entry != NULL)
- udev_list_entry_set_flag(list_entry, 1);
- }
-
- if (rule->last_rule) {
- dbg(event->udev, "last rule to be applied\n");
- break;
- }
-
- if (rule->goto_label.operation != KEY_OP_UNSET) {
- dbg(event->udev, "moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
- udev_rules_iter_goto(&iter, rule->goto_rule_off);
- }
- }
- }
-
- if (!name_set) {
- info(event->udev, "no node name set, will use kernel name '%s'\n",
- udev_device_get_sysname(dev));
- util_strlcpy(event->name, udev_device_get_sysname(dev), sizeof(event->name));
- }
-
- if (event->tmp_node[0] != '\0') {
- dbg(event->udev, "removing temporary device node\n");
- util_unlink_secure(event->udev, event->tmp_node);
- event->tmp_node[0] = '\0';
- }
- return 0;
-}
-
-int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event)
-{
- struct udev_device *dev = event->dev;
- struct udev_rules_iter iter;
- struct udev_rule *rule;
-
- dbg(event->udev, "sysname: '%s'\n", udev_device_get_sysname(dev));
-
- /* look for a matching rule to apply */
- udev_rules_iter_init(&iter, rules);
- while (1) {
- rule = udev_rules_iter_next(&iter);
- if (rule == NULL)
- break;
-
- dbg(event->udev, "process rule\n");
- if (rule->name.operation == KEY_OP_ASSIGN ||
- rule->name.operation == KEY_OP_ASSIGN_FINAL ||
- rule->name.operation == KEY_OP_ADD ||
- rule->symlink.operation == KEY_OP_ASSIGN ||
- rule->symlink.operation == KEY_OP_ASSIGN_FINAL ||
- rule->symlink.operation == KEY_OP_ADD ||
- rule->mode.operation != KEY_OP_UNSET ||
- rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
- dbg(event->udev, "skip rule that names a device\n");
- continue;
- }
-
- if (match_rule(event, rule) == 0) {
- if (rule->ignore_device) {
- info(event->udev, "rule applied, '%s' is ignored\n", udev_device_get_sysname(dev));
- event->ignore_device = 1;
- return 0;
- }
- if (rule->ignore_remove) {
- udev_device_set_ignore_remove(dev, 1);
- dbg(event->udev, "remove event should be ignored\n");
- }
-
- if (!event->run_final && rule->run.operation != KEY_OP_UNSET) {
- struct udev_list_entry *list_entry;
-
- if (rule->run.operation == KEY_OP_ASSIGN ||
- rule->run.operation == KEY_OP_ASSIGN_FINAL) {
- info(event->udev, "reset run list\n");
- udev_list_cleanup_entries(event->udev, &event->run_list);
- }
- dbg(event->udev, "add run '%s'\n", key_val(rule, &rule->run));
- list_entry = udev_list_entry_add(event->udev, &event->run_list,
- key_val(rule, &rule->run), NULL, 1, 0);
- if (rule->run_ignore_error && list_entry != NULL)
- udev_list_entry_set_flag(list_entry, 1);
- if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
- break;
- }
-
- if (rule->last_rule) {
- dbg(event->udev, "last rule to be applied\n");
- break;
- }
-
- if (rule->goto_label.operation != KEY_OP_UNSET) {
- dbg(event->udev, "moving forward to label '%s'\n", key_val(rule, &rule->goto_label));
- udev_rules_iter_goto(&iter, rule->goto_rule_off);
- }
- }
- }
-
- return 0;
-}
-
-static int get_key(struct udev_rules *rules, char **line, char **key, enum key_operation *operation, 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;
-
- while (1) {
- 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] == '=') {
- *operation = KEY_OP_MATCH;
- linepos += 2;
- dbg(rules->udev, "match:\n");
- } else if (linepos[0] == '!' && linepos[1] == '=') {
- *operation = KEY_OP_NOMATCH;
- linepos += 2;
- dbg(rules->udev, "nomatch:\n");
- } else if (linepos[0] == '+' && linepos[1] == '=') {
- *operation = KEY_OP_ADD;
- linepos += 2;
- dbg(rules->udev, "add:\n");
- } else if (linepos[0] == '=') {
- *operation = KEY_OP_ASSIGN;
- linepos++;
- dbg(rules->udev, "assign:\n");
- } else if (linepos[0] == ':' && linepos[1] == '=') {
- *operation = KEY_OP_ASSIGN_FINAL;
- linepos += 2;
- dbg(rules->udev, "assign_final:\n");
- } 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;
-
- temp = strchr(linepos, '"');
- if (!temp)
- return -1;
- temp[0] = '\0';
- temp++;
- dbg(rules->udev, "'%s'-'%s'\n", *key, *value);
-
- /* move line to next key */
- *line = temp;
- return 0;
-}
-
-/* extract possible KEY{attr} */
-static char *get_key_attribute(struct udev_rules *rules, char *str)
-{
- char *pos;
- char *attr;
-
- attr = strchr(str, '{');
- if (attr != NULL) {
- attr++;
- pos = strchr(attr, '}');
- if (pos == NULL) {
- err(rules->udev, "missing closing brace for format\n");
- return NULL;
- }
- pos[0] = '\0';
- dbg(rules->udev, "attribute='%s'\n", attr);
- return attr;
- }
-
- return NULL;
-}
-
-static int add_rule_key(struct udev_rule *rule, struct key *key,
- enum key_operation operation, const char *value)
-{
- size_t val_len = strnlen(value, UTIL_PATH_SIZE);
-
- key->operation = operation;
-
- key->val_off = rule->bufsize;
- util_strlcpy(rule->buf + rule->bufsize, value, val_len+1);
- rule->bufsize += val_len+1;
-
- return 0;
-}
-
-static int add_rule_key_pair(struct udev_rules *rules, struct udev_rule *rule, struct key_pairs *pairs,
- enum key_operation operation, const char *key, const char *value)
-{
- size_t key_len = strnlen(key, UTIL_PATH_SIZE);
-
- if (pairs->count >= PAIRS_MAX) {
- err(rules->udev, "skip, too many keys of the same type in a single rule\n");
- return -1;
- }
-
- add_rule_key(rule, &pairs->keys[pairs->count].key, operation, value);
-
- /* add the key-name of the pair */
- pairs->keys[pairs->count].key_name_off = rule->bufsize;
- util_strlcpy(rule->buf + rule->bufsize, key, key_len+1);
- rule->bufsize += key_len+1;
-
- pairs->count++;
-
- return 0;
-}
-
-static int add_to_rules(struct udev_rules *rules, char *line, const char *filename, unsigned int lineno)
-{
- char buf[sizeof(struct udev_rule) + UTIL_LINE_SIZE];
- struct udev_rule *rule;
- size_t rule_size;
- int valid;
- char *linepos;
- char *attr;
- size_t padding;
- int physdev = 0;
-
- memset(buf, 0x00, sizeof(buf));
- rule = (struct udev_rule *) buf;
- rule->event_timeout = -1;
- linepos = line;
- valid = 0;
-
- /* get all the keys */
- while (1) {
- char *key;
- char *value;
- enum key_operation operation = KEY_OP_UNSET;
-
- if (get_key(rules, &linepos, &key, &operation, &value) != 0)
- break;
-
- if (strcasecmp(key, "ACTION") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid ACTION operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->action, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "DEVPATH") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid DEVPATH operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->devpath, operation, value);
- valid = 1;
- continue;
- }
+ rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
+ valid = 1;
+ continue;
+ }
if (strcasecmp(key, "KERNEL") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid KERNEL operation\n");
goto invalid;
}
- add_rule_key(rule, &rule->kernel, operation, value);
+ rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL);
valid = 1;
continue;
}
if (strcasecmp(key, "SUBSYSTEM") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid SUBSYSTEM operation\n");
goto invalid;
}
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);
- add_rule_key(rule, &rule->subsystem, operation, "subsystem|class|bus");
+ rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
} else
- add_rule_key(rule, &rule->subsystem, operation, value);
+ rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
valid = 1;
continue;
}
if (strcasecmp(key, "DRIVER") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid DRIVER operation\n");
goto invalid;
}
- add_rule_key(rule, &rule->driver, operation, value);
+ rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL);
valid = 1;
continue;
}
if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("ATTR")-1);
+ attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1);
if (attr == NULL) {
err(rules->udev, "error parsing ATTR attribute\n");
goto invalid;
}
- if (add_rule_key_pair(rules, rule, &rule->attr, operation, attr, value) != 0)
- goto invalid;
+ if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+ rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
+ } else {
+ rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
+ }
valid = 1;
continue;
}
if (strcasecmp(key, "KERNELS") == 0 ||
strcasecmp(key, "ID") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid KERNELS operation\n");
goto invalid;
}
- add_rule_key(rule, &rule->kernels, operation, value);
+ rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL);
valid = 1;
continue;
}
if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
strcasecmp(key, "BUS") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid SUBSYSTEMS operation\n");
goto invalid;
}
- add_rule_key(rule, &rule->subsystems, operation, value);
+ rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
valid = 1;
continue;
}
if (strcasecmp(key, "DRIVERS") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid DRIVERS operation\n");
goto invalid;
}
- add_rule_key(rule, &rule->drivers, operation, value);
+ rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
valid = 1;
continue;
}
if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid ATTRS operation\n");
goto invalid;
}
- attr = get_key_attribute(rules, key + sizeof("ATTRS")-1);
+ attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1);
if (attr == NULL) {
err(rules->udev, "error parsing ATTRS attribute\n");
goto invalid;
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);
- if (add_rule_key_pair(rules, rule, &rule->attrs, operation, attr, value) != 0)
- goto invalid;
+ rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr);
valid = 1;
continue;
}
if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("ENV")-1);
+ attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1);
if (attr == NULL) {
err(rules->udev, "error parsing ENV attribute\n");
goto invalid;
}
if (strncmp(attr, "PHYSDEV", 7) == 0)
physdev = 1;
- if (add_rule_key_pair(rules, rule, &rule->env, operation, attr, value) != 0)
- goto invalid;
+ if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+ if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
+ goto invalid;
+ } else {
+ if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
+ goto invalid;
+ }
valid = 1;
continue;
}
if (strcasecmp(key, "PROGRAM") == 0) {
- add_rule_key(rule, &rule->program, operation, value);
+ rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
valid = 1;
continue;
}
if (strcasecmp(key, "RESULT") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid RESULT operation\n");
goto invalid;
}
- add_rule_key(rule, &rule->result, operation, value);
+ rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL);
valid = 1;
continue;
}
if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("IMPORT")-1);
+ attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
if (attr != NULL && strstr(attr, "program")) {
dbg(rules->udev, "IMPORT will be executed\n");
- rule->import_type = IMPORT_PROGRAM;
+ rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
+ valid = 1;
} else if (attr != NULL && strstr(attr, "file")) {
dbg(rules->udev, "IMPORT will be included as file\n");
- rule->import_type = IMPORT_FILE;
+ rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
+ valid = 1;
} else if (attr != NULL && strstr(attr, "parent")) {
dbg(rules->udev, "IMPORT will include the parent values\n");
- rule->import_type = IMPORT_PARENT;
+ rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
+ valid = 1;
} else {
/* figure it out if it is executable */
char file[UTIL_PATH_SIZE];
dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
- dbg(rules->udev, "IMPORT is executable, will be executed (autotype)\n");
- rule->import_type = IMPORT_PROGRAM;
+ dbg(rules->udev, "IMPORT will be executed (autotype)\n");
+ rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
+ valid = 1;
} else {
- dbg(rules->udev, "IMPORT is not executable, will be included as file (autotype)\n");
- rule->import_type = IMPORT_FILE;
+ dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
+ rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
+ valid = 1;
}
}
- add_rule_key(rule, &rule->import, operation, value);
- valid = 1;
continue;
}
if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
+ mode_t mode = 0;
+
+ if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
err(rules->udev, "invalid TEST operation\n");
goto invalid;
}
- attr = get_key_attribute(rules, key + sizeof("TEST")-1);
- if (attr != NULL)
- rule->test_mode_mask = strtol(attr, NULL, 8);
- add_rule_key(rule, &rule->test, operation, value);
+ attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
+ if (attr != NULL) {
+ mode = strtol(attr, NULL, 8);
+ rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode);
+ } else {
+ rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL);
+ }
valid = 1;
continue;
}
if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("RUN")-1);
- if (attr != NULL) {
- if (strstr(attr, "ignore_error"))
- rule->run_ignore_error = 1;
- }
- add_rule_key(rule, &rule->run, operation, value);
+ int flag = 0;
+
+ attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
+ if (attr != NULL && strstr(attr, "ignore_error"))
+ flag = 1;
+ rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag);
valid = 1;
continue;
}
if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
- add_rule_key(rule, &rule->wait_for, operation, value);
+ rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
valid = 1;
continue;
}
if (strcasecmp(key, "LABEL") == 0) {
- add_rule_key(rule, &rule->label, operation, value);
+ rule_tmp.rule.rule.label_off = add_string(rules, value);
valid = 1;
continue;
}
if (strcasecmp(key, "GOTO") == 0) {
- add_rule_key(rule, &rule->goto_label, operation, value);
+ rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL);
valid = 1;
continue;
}
if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("NAME")-1);
- if (attr != NULL) {
- if (strstr(attr, "all_partitions") != NULL) {
- dbg(rules->udev, "creation of partition nodes requested\n");
- rule->partitions = DEFAULT_FAKE_PARTITIONS_COUNT;
- }
- if (strstr(attr, "ignore_remove") != NULL) {
- dbg(rules->udev, "remove event should be ignored\n");
- rule->ignore_remove = 1;
+ if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+ rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
+ } else {
+ if (value[0] == '\0')
+ dbg(rules->udev, "name empty, node creation suppressed\n");
+ rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL);
+ attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1);
+ if (attr != NULL) {
+ if (strstr(attr, "all_partitions") != NULL) {
+ int num = DEFAULT_FAKE_PARTITIONS_COUNT;
+
+ dbg(rules->udev, "creation of partition nodes requested\n");
+ rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
+ }
+ if (strstr(attr, "ignore_remove") != NULL) {
+ dbg(rules->udev, "remove event should be ignored\n");
+ rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
+ }
}
}
- if (value[0] == '\0')
- dbg(rules->udev, "name empty, node creation supressed\n");
- add_rule_key(rule, &rule->name, operation, value);
continue;
}
if (strcasecmp(key, "SYMLINK") == 0) {
- if (operation == KEY_OP_MATCH ||
- operation == KEY_OP_NOMATCH)
- add_rule_key(rule, &rule->symlink_match, operation, value);
- else
- add_rule_key(rule, &rule->symlink, operation, value);
- valid = 1;
- continue;
- }
+ if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH)
+ rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
+ else
+ rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
+ valid = 1;
+ continue;
+ }
if (strcasecmp(key, "OWNER") == 0) {
- valid = 1;
- if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
- char *endptr;
- strtoul(value, &endptr, 10);
- if (endptr[0] != '\0') {
- char owner[32];
- uid_t uid = util_lookup_user(rules->udev, value);
- dbg(rules->udev, "replacing username='%s' by id=%i\n", value, uid);
- sprintf(owner, "%u", (unsigned int) uid);
- add_rule_key(rule, &rule->owner, operation, owner);
- continue;
- }
+ uid_t uid;
+ char *endptr;
+
+ uid = strtoul(value, &endptr, 10);
+ if (endptr[0] == '\0') {
+ rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
+ } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
+ uid = util_lookup_user(rules->udev, value);
+ rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
+ } else {
+ rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL);
}
-
- add_rule_key(rule, &rule->owner, operation, value);
+ valid = 1;
continue;
}
if (strcasecmp(key, "GROUP") == 0) {
- valid = 1;
- if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
- char *endptr;
- strtoul(value, &endptr, 10);
- if (endptr[0] != '\0') {
- char group[32];
- gid_t gid = util_lookup_group(rules->udev, value);
- dbg(rules->udev, "replacing groupname='%s' by id=%i\n", value, gid);
- sprintf(group, "%u", (unsigned int) gid);
- add_rule_key(rule, &rule->group, operation, group);
- continue;
- }
+ gid_t gid;
+ char *endptr;
+
+ gid = strtoul(value, &endptr, 10);
+ if (endptr[0] == '\0') {
+ rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
+ } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
+ gid = util_lookup_group(rules->udev, value);
+ rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
+ } else {
+ rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL);
}
-
- add_rule_key(rule, &rule->group, operation, value);
+ valid = 1;
continue;
}
if (strcasecmp(key, "MODE") == 0) {
- add_rule_key(rule, &rule->mode, operation, value);
+ mode_t mode;
+ char *endptr;
+
+ mode = strtol(value, &endptr, 8);
+ if (endptr[0] == '\0')
+ rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
+ else
+ rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL);
valid = 1;
continue;
}
if (strstr(value, "last_rule") != NULL) {
dbg(rules->udev, "last rule to be applied\n");
- rule->last_rule = 1;
+ rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
}
if (strstr(value, "ignore_device") != NULL) {
dbg(rules->udev, "device should be ignored\n");
- rule->ignore_device = 1;
+ rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
}
if (strstr(value, "ignore_remove") != NULL) {
dbg(rules->udev, "remove event should be ignored\n");
- rule->ignore_remove = 1;
+ rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
}
pos = strstr(value, "link_priority=");
if (pos != NULL) {
- rule->link_priority = atoi(&pos[strlen("link_priority=")]);
- dbg(rules->udev, "link priority=%i\n", rule->link_priority);
+ int prio = atoi(&pos[strlen("link_priority=")]);
+
+ rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
+ dbg(rules->udev, "link priority=%i\n", prio);
}
pos = strstr(value, "event_timeout=");
if (pos != NULL) {
- rule->event_timeout = atoi(&pos[strlen("event_timeout=")]);
- dbg(rules->udev, "event timout=%i\n", rule->event_timeout);
+ int tout = atoi(&pos[strlen("event_timeout=")]);
+
+ rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
+ dbg(rules->udev, "event timout=%i\n", tout);
}
pos = strstr(value, "string_escape=");
if (pos != NULL) {
pos = &pos[strlen("string_escape=")];
if (strncmp(pos, "none", strlen("none")) == 0)
- rule->string_escape = ESCAPE_NONE;
+ rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
else if (strncmp(pos, "replace", strlen("replace")) == 0)
- rule->string_escape = ESCAPE_REPLACE;
+ rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
}
if (strstr(value, "all_partitions") != NULL) {
+ int num = DEFAULT_FAKE_PARTITIONS_COUNT;
+
+ rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
dbg(rules->udev, "creation of partition nodes requested\n");
- rule->partitions = DEFAULT_FAKE_PARTITIONS_COUNT;
}
valid = 1;
continue;
}
-
err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno);
}
- if (physdev && rule->wait_for.operation == KEY_OP_UNSET)
- err(rules->udev, "PHYSDEV* values are deprecated and will be removed from a future kernel, \n"
+ if (physdev)
+ err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n"
"please fix it in %s:%u", filename, lineno);
/* skip line if not any valid key was found */
if (!valid)
goto invalid;
- /* grow buffer and add rule */
- rule_size = sizeof(struct udev_rule) + rule->bufsize;
- padding = (sizeof(size_t) - rule_size % sizeof(size_t)) % sizeof(size_t);
- dbg(rules->udev, "add %zi padding bytes\n", padding);
- rule_size += padding;
- rule->bufsize += padding;
-
- rules->buf = realloc(rules->buf, rules->bufsize + rule_size);
- if (!rules->buf) {
- err(rules->udev, "realloc failed\n");
- goto exit;
- }
- dbg(rules->udev, "adding rule to offset %zi\n", rules->bufsize);
- memcpy(rules->buf + rules->bufsize, rule, rule_size);
- rules->bufsize += rule_size;
-exit:
- return 0;
+ /* add rule token */
+ 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)
{
FILE *f;
+ unsigned int filename_off;
+ unsigned int first_token;
char line[UTIL_LINE_SIZE];
- size_t start;
- struct udev_rule *rule;
- struct udev_rules_iter iter;
+ int line_nr = 0;
+ unsigned int i;
- start = rules->bufsize;
info(rules->udev, "reading '%s' as rules file\n", filename);
f = fopen(filename, "r");
if (f == NULL)
return -1;
+ filename_off = add_string(rules, filename);
+ first_token = rules->token_cur;
+
while(fgets(line, sizeof(line), f) != NULL) {
- int line_nr = 0;
char *key;
size_t len;
err(rules->udev, "line too long '%s':%u, ignored\n", filename, line_nr);
continue;
}
- add_to_rules(rules, key, filename, line_nr);
+ add_rule(rules, key, filename, filename_off, line_nr);
}
fclose(f);
- /* compute all goto targets within this file */
- udev_rules_iter_init(&iter, rules);
- udev_rules_iter_goto(&iter, start);
- while((rule = udev_rules_iter_next(&iter))) {
- if (rule->goto_label.operation != KEY_OP_UNSET) {
- char *goto_label = &rule->buf[rule->goto_label.val_off];
-
- dbg(rules->udev, "resolving goto label '%s'\n", goto_label);
- rule->goto_rule_off = find_label(&iter, goto_label);
- if (rule->goto_rule_off == 0) {
- err(rules->udev, "ignore goto to nonexistent label '%s' in '%s'\n",
- goto_label, filename);
- rule->goto_rule_off = iter.current;
+ /* 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;
}
+ if (rules->tokens[i].key.rule_goto == 0)
+ err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename);
}
}
return 0;
char filename[PATH_MAX];
struct udev_list_node file_list;
struct udev_list_entry *file_loop, *file_tmp;
+ unsigned int prev_rule;
+ struct token end_token;
+ unsigned int i;
- rules = calloc(1, sizeof(struct udev_rules));
+ rules = malloc(sizeof(struct udev_rules));
if (rules == NULL)
- return rules;
+ return NULL;
+ memset(rules, 0x00, sizeof(struct udev_rules));
rules->udev = udev;
rules->resolve_names = resolve_names;
udev_list_init(&file_list);
+ /* init token array and string buffer */
+ rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
+ if (rules->tokens != NULL)
+ rules->token_max = PREALLOC_TOKEN;
+ rules->buf = malloc(PREALLOC_STRBUF);
+ if (rules->buf != NULL)
+ rules->buf_max = PREALLOC_STRBUF;
+ info(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);
+ /* offset 0 in the string buffer is always empty */
+ add_string(rules, "");
+
if (udev_get_rules_path(udev) != NULL) {
/* custom rules location for testing */
add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
info(udev, "can not read '%s'\n", file_name);
udev_list_entry_remove(file_loop);
}
+
+ memset(&end_token, 0x00, sizeof(struct token));
+ end_token.type = TK_END;
+ add_token(rules, &end_token);
+
+ /* shrink allocate buffers */
+ 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, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
+ rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
+
+ /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */
+ prev_rule = 0;
+ for (i = 1; i < rules->token_cur; i++) {
+ if (rules->tokens[i].type == TK_RULE) {
+ rules->tokens[prev_rule].rule.next_rule = i;
+ prev_rule = i;
+ }
+ }
+ dump_rules(rules);
return rules;
}
{
if (rules == NULL)
return;
- if (rules->buf) {
- free(rules->buf);
- rules->buf = NULL;
- }
+ free(rules->tokens);
+ free(rules->buf);
free(rules);
}
+
+static int match_key(struct udev_rules *rules, struct token *token, const char *val)
+{
+ const char *key_name = token_str[token->type];
+ char *key_value = &rules->buf[token->key.value_off];
+ char *pos;
+ int match = 0;
+
+ if (val == NULL)
+ val = "";
+
+ /* look for a matching string, parts are separated by '|' */
+ if (strchr(key_value, '|') != NULL) {
+ char value[UTIL_PATH_SIZE];
+
+ util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
+ 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", key_name, key_value, val);
+ match = (fnmatch(key_value, val, 0) == 0);
+ if (match)
+ break;
+ key_value = pos;
+ }
+ } else {
+ match = (fnmatch(key_value, val, 0) == 0);
+ }
+
+ if (match && (token->key.op == KEY_OP_MATCH)) {
+ dbg(rules->udev, "%s is true (matching value)\n", key_name);
+ return 0;
+ }
+ if (!match && (token->key.op == KEY_OP_NOMATCH)) {
+ dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
+ return 0;
+ }
+ dbg(rules->udev, "%s is not true\n", key_name);
+ return -1;
+}
+
+static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
+{
+ char attr[UTIL_PATH_SIZE];
+ const char *key_name = &rules->buf[cur->key.attr_off];
+ const char *key_value = &rules->buf[cur->key.value_off];
+ char value[UTIL_NAME_SIZE] = "";
+ size_t len;
+
+ util_strlcpy(attr, key_name, sizeof(attr));
+ util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
+ if (value[0] == '\0') {
+ const char *val;
+
+ val = udev_device_get_sysattr_value(dev, key_name);
+ if (val != NULL)
+ util_strlcpy(value, val, sizeof(value));
+ }
+ if (value[0]=='\0')
+ return -1;
+
+ /* strip trailing whitespace of value, if not asked to match for it */
+ len = strlen(key_value);
+ if (len > 0 && !isspace(key_value[len-1])) {
+ len = strlen(value);
+ while (len > 0 && isspace(value[--len]))
+ value[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)
+{
+ struct token *rule;
+ struct token *cur;
+
+ if (rules->tokens == NULL)
+ return -1;
+
+ /* loop through token list, match, run actions or forward to next rule */
+ cur = &rules->tokens[0];
+ while (cur != NULL && cur->type != TK_END) {
+ enum escape_type esc = ESCAPE_UNSET;
+ unsigned int idx;
+
+ dump_token(rules, cur);
+ switch (cur->type) {
+ case TK_RULE:
+ /* current rule */
+ rule = cur;
+ esc = ESCAPE_UNSET;
+ break;
+ case TK_M_WAITFOR:
+ {
+ char filename[UTIL_PATH_SIZE];
+ int found;
+
+ util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
+ udev_event_apply_format(event, filename, sizeof(filename));
+ found = (wait_for_file(event->dev, filename, 10) == 0);
+ if (!found && (cur->key.op != KEY_OP_NOMATCH))
+ goto nomatch;
+ 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;
+ int match = 0;
+
+ 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 = 1;
+ 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:
+ {
+ struct udev_list_entry *list_entry;
+ const char *key_name = &rules->buf[cur->key.attr_off];
+ const char *value;
+
+ list_entry = udev_device_get_properties_list_entry(event->dev);
+ list_entry = udev_list_entry_get_by_name(list_entry, key_name);
+ value = udev_list_entry_get_value(list_entry);
+ 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_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_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:
+ {
+ struct token *next;
+
+ /* get whole sequence of parent matches */
+ next = cur;
+ while (next->type < TK_PARENTS_MAX)
+ next++;
+
+ /* loop over parents */
+ event->dev_parent = event->dev;
+ while (1) {
+ 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;
+ default:
+ goto nomatch;
+ }
+ dbg(event->udev, "parent key matched\n");
+ }
+ dbg(event->udev, "all parent keys matched\n");
+ /* all keys matched */
+ 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;
+
+ util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
+ udev_event_apply_format(event, filename, sizeof(filename));
+ if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0)
+ if (filename[0] != '/') {
+ char tmp[UTIL_PATH_SIZE];
+
+ util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp));
+ util_strlcat(tmp, "/", sizeof(tmp));
+ util_strlcat(tmp, filename, sizeof(tmp));
+ util_strlcpy(filename, tmp, sizeof(filename));
+ }
+
+ attr_subst_subdir(filename, sizeof(filename));
+
+ match = (stat(filename, &statbuf) == 0);
+ info(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);
+ info(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 == KEY_OP_NOMATCH)
+ goto nomatch;
+ if (!match && cur->key.op == KEY_OP_MATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_PROGRAM:
+ {
+ char program[UTIL_PATH_SIZE];
+ char **envp;
+ char result[UTIL_PATH_SIZE];
+
+ util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program));
+ udev_event_apply_format(event, program, sizeof(program));
+ envp = udev_device_get_properties_envp(event->dev);
+ if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
+ event->program_result[0] = '\0';
+ if (cur->key.op != KEY_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, ALLOWED_CHARS_INPUT);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n" , count);
+ }
+ util_strlcpy(event->program_result, result, sizeof(event->program_result));
+ if (cur->key.op == KEY_OP_NOMATCH)
+ goto nomatch;
+ }
+ break;
+ }
+ case TK_M_IMPORT_FILE:
+ {
+ char import[UTIL_PATH_SIZE];
+
+ util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
+ udev_event_apply_format(event, import, sizeof(import));
+ if (import_file_into_properties(event->dev, import) != 0)
+ if (cur->key.op != KEY_OP_NOMATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_IMPORT_PROG:
+ {
+ char import[UTIL_PATH_SIZE];
+
+ util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
+ udev_event_apply_format(event, import, sizeof(import));
+ if (import_program_into_properties(event->dev, import) != 0)
+ if (cur->key.op != KEY_OP_NOMATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_IMPORT_PARENT:
+ {
+ char import[UTIL_PATH_SIZE];
+
+ util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
+ udev_event_apply_format(event, import, sizeof(import));
+ if (import_parent_into_properties(event->dev, import) != 0)
+ if (cur->key.op != KEY_OP_NOMATCH)
+ goto nomatch;
+ break;
+ }
+ case TK_M_RESULT:
+ if (match_key(rules, cur, event->program_result) != 0)
+ goto nomatch;
+ break;
+
+ case TK_A_IGNORE_DEVICE:
+ event->ignore_device = 1;
+ return 0;
+ break;
+ case TK_A_STRING_ESCAPE_NONE:
+ esc = ESCAPE_NONE;
+ break;
+ case TK_A_STRING_ESCAPE_REPLACE:
+ esc = ESCAPE_REPLACE;
+ break;
+ case TK_A_NUM_FAKE_PART:
+ if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0)
+ break;
+ if (udev_device_get_sysnum(event->dev) != NULL)
+ break;
+ udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part);
+ 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 == KEY_OP_ASSIGN_FINAL)
+ event->owner_final = 1;
+ util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner));
+ udev_event_apply_format(event, owner, sizeof(owner));
+ event->uid = util_lookup_user(event->udev, owner);
+ break;
+ }
+ case TK_A_GROUP:
+ {
+ char group[UTIL_NAME_SIZE];
+
+ if (event->group_final)
+ break;
+ if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->group_final = 1;
+ util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
+ udev_event_apply_format(event, group, sizeof(group));
+ event->gid = util_lookup_group(event->udev, group);
+ break;
+ }
+ case TK_A_MODE:
+ {
+ char mode[UTIL_NAME_SIZE];
+ char *endptr;
+
+ if (event->mode_final)
+ break;
+ if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->mode_final = 1;
+ util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
+ udev_event_apply_format(event, mode, sizeof(mode));
+ event->mode = strtol(mode, &endptr, 8);
+ if (endptr[0] != '\0') {
+ err(event->udev, "invalide mode '%s' set default mode 0660\n", mode);
+ event->mode = 0660;
+ }
+ break;
+ }
+ case TK_A_OWNER_ID:
+ if (event->owner_final)
+ break;
+ if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->owner_final = 1;
+ event->uid = cur->key.uid;
+ break;
+ case TK_A_GROUP_ID:
+ if (event->group_final)
+ break;
+ if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->group_final = 1;
+ event->gid = cur->key.gid;
+ break;
+ case TK_A_MODE_ID:
+ if (event->mode_final)
+ break;
+ if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->mode_final = 1;
+ event->mode = cur->key.mode;
+ 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;
+
+ util_strlcpy(temp_value, value, sizeof(temp_value));
+ udev_event_apply_format(event, temp_value, sizeof(temp_value));
+ entry = udev_device_add_property(event->dev, name, temp_value);
+ /* store in db */
+ udev_list_entry_set_flag(entry, 1);
+ } else {
+ udev_device_add_property(event->dev, name, NULL);
+ }
+ break;
+ }
+ case TK_A_NAME:
+ {
+ const char *name = &rules->buf[cur->key.value_off];
+ int count;
+
+ if (event->name_final)
+ break;
+ if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->name_final = 1;
+ if (name[0] == '\0') {
+ event->name[0] = '\0';
+ event->name_ignore = 1;
+ break;
+ }
+ event->name_ignore = 0;
+ util_strlcpy(event->name, name, sizeof(event->name));
+ udev_event_apply_format(event, event->name, sizeof(event->name));
+ if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
+ count = util_replace_chars(event->name, ALLOWED_CHARS_FILE);
+ if (count > 0)
+ info(event->udev, "%i character(s) replaced\n", count);
+ }
+ 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 (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ event->devlink_final = 1;
+ if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
+ udev_device_cleanup_devlinks_list(event->dev);
+
+ /* allow multiple symlinks separated by spaces */
+ util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp));
+ udev_event_apply_format(event, temp, sizeof(temp));
+ if (esc == ESCAPE_UNSET)
+ count = util_replace_chars(temp, ALLOWED_CHARS_FILE " ");
+ else if (esc == ESCAPE_REPLACE)
+ count = util_replace_chars(temp, ALLOWED_CHARS_FILE);
+ 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) {
+ next[0] = '\0';
+ info(event->udev, "add symlink '%s'\n", pos);
+ util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, pos, sizeof(filename));
+ udev_device_add_devlink(event->dev, filename);
+ while (isspace(next[1]))
+ next++;
+ pos = &next[1];
+ next = strchr(pos, ' ');
+ }
+ if (pos[0] != '\0') {
+ info(event->udev, "add symlink '%s'\n", pos);
+ util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, pos, sizeof(filename));
+ udev_device_add_devlink(event->dev, filename);
+ }
+ }
+ break;
+ case TK_A_EVENT_TIMEOUT:
+ udev_device_set_event_timeout(event->dev, cur->key.event_timeout);
+ break;
+ case TK_A_IGNORE_REMOVE:
+ udev_device_set_ignore_remove(event->dev, 1);
+ 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;
+
+ util_strlcpy(attr, key_name, sizeof(attr));
+ if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) {
+ util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr));
+ util_strlcat(attr, "/", sizeof(attr));
+ util_strlcat(attr, key_name, sizeof(attr));
+ }
+
+ attr_subst_subdir(attr, sizeof(attr));
+
+ util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value));
+ udev_event_apply_format(event, value, sizeof(value));
+ info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr);
+ f = fopen(attr, "w");
+ if (f != NULL) {
+ if (!event->test)
+ 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:
+ {
+ struct udev_list_entry *list_entry;
+
+ if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
+ udev_list_cleanup_entries(event->udev, &event->run_list);
+ list_entry = udev_list_entry_add(event->udev, &event->run_list,
+ &rules->buf[cur->key.value_off], NULL, 1, 0);
+ if (cur->key.ignore_error)
+ udev_list_entry_set_flag(list_entry, 1);
+ break;
+ }
+ case TK_A_GOTO:
+ cur = &rules->tokens[cur->key.rule_goto];
+ continue;
+ case TK_A_LAST_RULE:
+ break;
+
+ case TK_PARENTS_MAX:
+ case TK_END:
+ case TK_UNDEF:
+ err(rules->udev, "wrong type %u\n", cur->type);
+ goto nomatch;
+ }
+
+ cur++;
+ continue;
+ nomatch:
+ /* fast-forward to next rule */
+ idx = rule->rule.next_rule;
+ if (idx == 0)
+ break;
+ dbg(rules->udev, "forward to rule: %u\n", idx);
+ cur = &rules->tokens[idx];
+ }
+ return 0;
+}
projects / systemd / commitdiff