common_files = \
udev.h \
- udev-rules.h \
udev-sysdeps.h \
udev-event.c \
udev-node.c \
udev-rules.c \
- udev-rules-parse.c \
udev-util.c \
lib/libudev.h \
lib/libudev-private.h \
#include <grp.h>
#include "udev.h"
-#include "udev-rules.h"
static void asmlinkage sig_handler(int signum)
{
#include <linux/sockios.h>
#include "udev.h"
-#include "udev-rules.h"
struct udev_event *udev_event_new(struct udev_device *dev)
{
#include <sys/types.h>
#include "udev.h"
-#include "udev-rules.h"
#define TMP_FILE_EXT ".udev-tmp"
+++ /dev/null
-/*
- * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2003-2008 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
- * 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 <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <errno.h>
-#include <sys/stat.h>
-
-#include "udev.h"
-#include "udev-rules.h"
-
-
-void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules)
-{
- dbg(rules->udev, "bufsize=%zi\n", rules->bufsize);
- iter->rules = rules;
- iter->current = 0;
-}
-
-struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter)
-{
- struct udev_rules *rules;
- struct udev_rule *rule;
-
- rules = iter->rules;
- if (!rules)
- return NULL;
-
- dbg(rules->udev, "current=%zi\n", iter->current);
- if (iter->current >= rules->bufsize) {
- dbg(rules->udev, "no more rules\n");
- return NULL;
- }
-
- /* get next rule */
- rule = (struct udev_rule *) (rules->buf + iter->current);
- iter->current += sizeof(struct udev_rule) + rule->bufsize;
-
- return rule;
-}
-
-struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off)
-{
- 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;
-}
-
-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);
-
- 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;
- }
-
- dbg(rules->udev, "found label '%s'\n", label);
- return current;
-}
-
-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;
- int retval;
-
- 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;
-
- retval = get_key(rules, &linepos, &key, &operation, &value);
- if (retval)
- 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;
- }
-
- if (strcasecmp(key, "KERNEL") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid KERNEL operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->kernel, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "SUBSYSTEM") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- 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);
- add_rule_key(rule, &rule->subsystem, operation, "subsystem|class|bus");
- } else
- add_rule_key(rule, &rule->subsystem, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "DRIVER") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid DRIVER operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->driver, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
- attr = get_key_attribute(rules, 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;
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "KERNELS") == 0 ||
- strcasecmp(key, "ID") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid KERNELS operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->kernels, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
- strcasecmp(key, "BUS") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid SUBSYSTEMS operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->subsystems, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "DRIVERS") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid DRIVERS operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->drivers, operation, value);
- 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) {
- err(rules->udev, "invalid ATTRS operation\n");
- goto invalid;
- }
- attr = get_key_attribute(rules, 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 is deprecated and will be removed from a future kernel, \n"
- "please fix it in %s:%u", filename, lineno);
- else if (strstr(attr, "../") != NULL)
- err(rules->udev, "do not reference parent sysfs directories directly, that may break with a future kernel, \n"
- "please fix it in %s:%u", filename, lineno);
- if (add_rule_key_pair(rules, rule, &rule->attrs, operation, attr, value) != 0)
- goto invalid;
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
- attr = get_key_attribute(rules, 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;
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "PROGRAM") == 0) {
- add_rule_key(rule, &rule->program, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "RESULT") == 0) {
- if (operation != KEY_OP_MATCH &&
- operation != KEY_OP_NOMATCH) {
- err(rules->udev, "invalid RESULT operation\n");
- goto invalid;
- }
- add_rule_key(rule, &rule->result, operation, value);
- valid = 1;
- continue;
- }
-
- if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
- attr = get_key_attribute(rules, key + sizeof("IMPORT")-1);
- if (attr != NULL && strstr(attr, "program")) {
- dbg(rules->udev, "IMPORT will be executed\n");
- rule->import_type = IMPORT_PROGRAM;
- } else if (attr != NULL && strstr(attr, "file")) {
- dbg(rules->udev, "IMPORT will be included as file\n");
- rule->import_type = IMPORT_FILE;
- } else if (attr != NULL && strstr(attr, "parent")) {
- dbg(rules->udev, "IMPORT will include the parent values\n");
- rule->import_type = IMPORT_PARENT;
- } else {
- /* figure it out if it is executable */
- char file[UTIL_PATH_SIZE];
- char *pos;
- struct stat statbuf;
-
- util_strlcpy(file, value, sizeof(file));
- pos = strchr(file, ' ');
- if (pos)
- pos[0] = '\0';
-
- /* allow programs in /lib/udev called without the path */
- if (strchr(file, '/') == NULL) {
- util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
- util_strlcat(file, value, sizeof(file));
- pos = strchr(file, ' ');
- if (pos)
- pos[0] = '\0';
- }
-
- 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;
- } else {
- dbg(rules->udev, "IMPORT is not executable, will be included as file (autotype)\n");
- rule->import_type = IMPORT_FILE;
- }
- }
- 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) {
- 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);
- 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);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
- add_rule_key(rule, &rule->wait_for, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "LABEL") == 0) {
- add_rule_key(rule, &rule->label, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "GOTO") == 0) {
- add_rule_key(rule, &rule->goto_label, operation, value);
- 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_PARTITIONS_COUNT;
- }
- if (strstr(attr, "ignore_remove") != NULL) {
- dbg(rules->udev, "remove event should be ignored\n");
- rule->ignore_remove = 1;
- }
- }
- 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 (strcasecmp(key, "OWNER") == 0) {
- valid = 1;
- if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
- char *endptr;
- strtoul(value, &endptr, 10);
- if (endptr[0] != '\0') {
- char owner[32];
- uid_t uid = lookup_user(rules->udev, value);
- dbg(rules->udev, "replacing username='%s' by id=%i\n", value, uid);
- sprintf(owner, "%u", (unsigned int) uid);
- add_rule_key(rule, &rule->owner, operation, owner);
- continue;
- }
- }
-
- add_rule_key(rule, &rule->owner, operation, value);
- continue;
- }
-
- if (strcasecmp(key, "GROUP") == 0) {
- valid = 1;
- if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
- char *endptr;
- strtoul(value, &endptr, 10);
- if (endptr[0] != '\0') {
- char group[32];
- gid_t gid = 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;
- }
- }
-
- add_rule_key(rule, &rule->group, operation, value);
- continue;
- }
-
- if (strcasecmp(key, "MODE") == 0) {
- add_rule_key(rule, &rule->mode, operation, value);
- valid = 1;
- continue;
- }
-
- if (strcasecmp(key, "OPTIONS") == 0) {
- const char *pos;
-
- if (strstr(value, "last_rule") != NULL) {
- dbg(rules->udev, "last rule to be applied\n");
- rule->last_rule = 1;
- }
- if (strstr(value, "ignore_device") != NULL) {
- dbg(rules->udev, "device should be ignored\n");
- rule->ignore_device = 1;
- }
- if (strstr(value, "ignore_remove") != NULL) {
- dbg(rules->udev, "remove event should be ignored\n");
- rule->ignore_remove = 1;
- }
- 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);
- }
- 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);
- }
- 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;
- else if (strncmp(pos, "replace", strlen("replace")) == 0)
- rule->string_escape = ESCAPE_REPLACE;
- }
- if (strstr(value, "all_partitions") != NULL) {
- dbg(rules->udev, "creation of partition nodes requested\n");
- rule->partitions = DEFAULT_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"
- "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;
-
-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;
- char line[UTIL_LINE_SIZE];
- size_t start;
- struct udev_rule *rule;
- struct udev_rules_iter iter;
-
- start = rules->bufsize;
- info(rules->udev, "reading '%s' as rules file\n", filename);
-
- f = fopen(filename, "r");
- if (f == NULL)
- return -1;
-
- while(fgets(line, sizeof(line), f) != NULL) {
- int line_nr = 0;
- 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;
- 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_to_rules(rules, key, filename, 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;
- }
- }
- }
- return 0;
-}
-
-static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
-{
- struct dirent *ent;
- DIR *dir;
- char filename[UTIL_PATH_SIZE];
-
- dbg(udev, "open directory '%s'\n", dirname);
- dir = opendir(dirname);
- if (dir == NULL) {
- err(udev, "unable to open '%s': %m\n", dirname);
- return -1;
- }
-
- while (1) {
- ent = readdir(dir);
- if (ent == NULL || ent->d_name[0] == '\0')
- break;
-
- if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
- continue;
-
- /* look for file matching with specified suffix */
- if (suffix != NULL) {
- const char *ext;
-
- ext = strrchr(ent->d_name, '.');
- if (ext == NULL)
- continue;
- if (strcmp(ext, suffix) != 0)
- continue;
- }
- dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
-
- snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
- filename[sizeof(filename)-1] = '\0';
- udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
- }
-
- closedir(dir);
- return 0;
-}
-
-int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names)
-{
- struct stat statbuf;
- char filename[PATH_MAX];
- struct udev_list_node file_list;
- struct udev_list_entry *file_loop, *file_tmp;
- int retval = 0;
-
- memset(rules, 0x00, sizeof(struct udev_rules));
- rules->udev = udev;
- rules->resolve_names = resolve_names;
- udev_list_init(&file_list);
-
- if (udev_get_rules_path(udev) != NULL) {
- /* custom rules location for testing */
- add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
- } else {
- struct udev_list_node sort_list;
- struct udev_list_entry *sort_loop, *sort_tmp;
-
- /* read user/custom rules */
- add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
-
- /* read dynamic/temporary rules */
- util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
- util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
- if (stat(filename, &statbuf) != 0) {
- create_path(udev, filename);
- udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
- mkdir(filename, 0755);
- udev_selinux_resetfscreatecon(udev);
- }
- udev_list_init(&sort_list);
- add_matching_files(udev, &sort_list, filename, ".rules");
-
- /* read default rules */
- add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
-
- /* sort all rules files by basename into list of files */
- udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
- const char *sort_name = udev_list_entry_get_name(sort_loop);
- const char *sort_base = strrchr(sort_name, '/');
-
- if (sort_base == NULL)
- continue;
-
- udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
- const char *file_name = udev_list_entry_get_name(file_loop);
- const char *file_base = strrchr(file_name, '/');
-
- if (file_base == NULL)
- continue;
- if (strcmp(file_base, sort_base) == 0) {
- info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
- file_name, sort_name);
- udev_list_entry_remove(sort_loop);
- sort_loop = NULL;
- break;
- }
- if (strcmp(file_base, sort_base) > 0)
- break;
- }
- if (sort_loop != NULL)
- udev_list_entry_move_before(sort_loop, file_loop);
- }
- }
-
- /* parse list of files */
- udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
- const char *file_name = udev_list_entry_get_name(file_loop);
-
- if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
- parse_file(rules, file_name);
- else
- info(udev, "can not read '%s'\n", file_name);
- udev_list_entry_remove(file_loop);
- }
- return retval;
-}
-
-void udev_rules_cleanup(struct udev_rules *rules)
-{
- if (rules->buf) {
- free(rules->buf);
- rules->buf = NULL;
- }
-}
-
#include <sys/stat.h>
#include "udev.h"
-#include "udev-rules.h"
-extern char **environ;
+#define PAIRS_MAX 5
+
+enum key_operation {
+ KEY_OP_UNSET,
+ KEY_OP_MATCH,
+ KEY_OP_NOMATCH,
+ KEY_OP_ADD,
+ KEY_OP_ASSIGN,
+ KEY_OP_ASSIGN_FINAL,
+};
+
+struct key {
+ enum key_operation operation;
+ size_t val_off;
+};
+
+struct key_pair {
+ struct key key;
+ size_t key_name_off;
+};
+
+struct key_pairs {
+ int count;
+ struct key_pair keys[PAIRS_MAX];
+};
+
+enum import_type {
+ IMPORT_UNSET,
+ IMPORT_PROGRAM,
+ IMPORT_FILE,
+ IMPORT_PARENT,
+};
+
+enum escape_type {
+ ESCAPE_UNSET,
+ ESCAPE_NONE,
+ ESCAPE_REPLACE,
+};
+
+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_iter {
+ struct udev_rules *rules;
+ size_t current;
+};
+
+static void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules)
+{
+ dbg(rules->udev, "bufsize=%zi\n", rules->bufsize);
+ iter->rules = rules;
+ iter->current = 0;
+}
+
+static struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter)
+{
+ struct udev_rules *rules;
+ struct udev_rule *rule;
+
+ rules = iter->rules;
+ if (!rules)
+ return NULL;
+
+ dbg(rules->udev, "current=%zi\n", iter->current);
+ if (iter->current >= rules->bufsize) {
+ dbg(rules->udev, "no more rules\n");
+ return NULL;
+ }
+
+ /* get next rule */
+ rule = (struct udev_rule *) (rules->buf + iter->current);
+ iter->current += sizeof(struct udev_rule) + rule->bufsize;
+
+ return rule;
+}
+
+static struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off)
+{
+ 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;
+}
+
+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);
+
+ 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;
+ }
+
+ dbg(rules->udev, "found label '%s'\n", label);
+ return current;
+}
/* extract possible {attr} and move str behind it */
static char *get_format_attribute(struct udev *udev, char **str)
if (match_key(event->udev, "RESULT", rule, &rule->result, event->program_result))
goto nomatch;
- /* import variables returned from program or or file into environment */
+ /* 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;
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;
+ int retval;
+
+ 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;
+
+ retval = get_key(rules, &linepos, &key, &operation, &value);
+ if (retval)
+ 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;
+ }
+
+ if (strcasecmp(key, "KERNEL") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid KERNEL operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->kernel, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "SUBSYSTEM") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ 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);
+ add_rule_key(rule, &rule->subsystem, operation, "subsystem|class|bus");
+ } else
+ add_rule_key(rule, &rule->subsystem, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "DRIVER") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid DRIVER operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->driver, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
+ attr = get_key_attribute(rules, 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;
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "KERNELS") == 0 ||
+ strcasecmp(key, "ID") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid KERNELS operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->kernels, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
+ strcasecmp(key, "BUS") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid SUBSYSTEMS operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->subsystems, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "DRIVERS") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid DRIVERS operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->drivers, operation, value);
+ 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) {
+ err(rules->udev, "invalid ATTRS operation\n");
+ goto invalid;
+ }
+ attr = get_key_attribute(rules, 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);
+ if (add_rule_key_pair(rules, rule, &rule->attrs, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
+ attr = get_key_attribute(rules, 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;
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "PROGRAM") == 0) {
+ add_rule_key(rule, &rule->program, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "RESULT") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err(rules->udev, "invalid RESULT operation\n");
+ goto invalid;
+ }
+ add_rule_key(rule, &rule->result, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
+ attr = get_key_attribute(rules, key + sizeof("IMPORT")-1);
+ if (attr != NULL && strstr(attr, "program")) {
+ dbg(rules->udev, "IMPORT will be executed\n");
+ rule->import_type = IMPORT_PROGRAM;
+ } else if (attr != NULL && strstr(attr, "file")) {
+ dbg(rules->udev, "IMPORT will be included as file\n");
+ rule->import_type = IMPORT_FILE;
+ } else if (attr != NULL && strstr(attr, "parent")) {
+ dbg(rules->udev, "IMPORT will include the parent values\n");
+ rule->import_type = IMPORT_PARENT;
+ } else {
+ /* figure it out if it is executable */
+ char file[UTIL_PATH_SIZE];
+ char *pos;
+ struct stat statbuf;
+
+ util_strlcpy(file, value, sizeof(file));
+ pos = strchr(file, ' ');
+ if (pos)
+ pos[0] = '\0';
+
+ /* allow programs in /lib/udev called without the path */
+ if (strchr(file, '/') == NULL) {
+ util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file));
+ util_strlcat(file, value, sizeof(file));
+ pos = strchr(file, ' ');
+ if (pos)
+ pos[0] = '\0';
+ }
+
+ 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;
+ } else {
+ dbg(rules->udev, "IMPORT is not executable, will be included as file (autotype)\n");
+ rule->import_type = IMPORT_FILE;
+ }
+ }
+ 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) {
+ 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);
+ 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);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
+ add_rule_key(rule, &rule->wait_for, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "LABEL") == 0) {
+ add_rule_key(rule, &rule->label, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "GOTO") == 0) {
+ add_rule_key(rule, &rule->goto_label, operation, value);
+ 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 (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 (strcasecmp(key, "OWNER") == 0) {
+ valid = 1;
+ if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
+ char *endptr;
+ strtoul(value, &endptr, 10);
+ if (endptr[0] != '\0') {
+ char owner[32];
+ uid_t uid = lookup_user(rules->udev, value);
+ dbg(rules->udev, "replacing username='%s' by id=%i\n", value, uid);
+ sprintf(owner, "%u", (unsigned int) uid);
+ add_rule_key(rule, &rule->owner, operation, owner);
+ continue;
+ }
+ }
+
+ add_rule_key(rule, &rule->owner, operation, value);
+ continue;
+ }
+
+ if (strcasecmp(key, "GROUP") == 0) {
+ valid = 1;
+ if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
+ char *endptr;
+ strtoul(value, &endptr, 10);
+ if (endptr[0] != '\0') {
+ char group[32];
+ gid_t gid = 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;
+ }
+ }
+
+ add_rule_key(rule, &rule->group, operation, value);
+ continue;
+ }
+
+ if (strcasecmp(key, "MODE") == 0) {
+ add_rule_key(rule, &rule->mode, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "OPTIONS") == 0) {
+ const char *pos;
+
+ if (strstr(value, "last_rule") != NULL) {
+ dbg(rules->udev, "last rule to be applied\n");
+ rule->last_rule = 1;
+ }
+ if (strstr(value, "ignore_device") != NULL) {
+ dbg(rules->udev, "device should be ignored\n");
+ rule->ignore_device = 1;
+ }
+ if (strstr(value, "ignore_remove") != NULL) {
+ dbg(rules->udev, "remove event should be ignored\n");
+ rule->ignore_remove = 1;
+ }
+ 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);
+ }
+ 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);
+ }
+ 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;
+ else if (strncmp(pos, "replace", strlen("replace")) == 0)
+ rule->string_escape = ESCAPE_REPLACE;
+ }
+ if (strstr(value, "all_partitions") != NULL) {
+ 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"
+ "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;
+
+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;
+ char line[UTIL_LINE_SIZE];
+ size_t start;
+ struct udev_rule *rule;
+ struct udev_rules_iter iter;
+
+ start = rules->bufsize;
+ info(rules->udev, "reading '%s' as rules file\n", filename);
+
+ f = fopen(filename, "r");
+ if (f == NULL)
+ return -1;
+
+ while(fgets(line, sizeof(line), f) != NULL) {
+ int line_nr = 0;
+ 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;
+ 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_to_rules(rules, key, filename, 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;
+ }
+ }
+ }
+ return 0;
+}
+
+static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix)
+{
+ struct dirent *ent;
+ DIR *dir;
+ char filename[UTIL_PATH_SIZE];
+
+ dbg(udev, "open directory '%s'\n", dirname);
+ dir = opendir(dirname);
+ if (dir == NULL) {
+ err(udev, "unable to open '%s': %m\n", dirname);
+ return -1;
+ }
+
+ while (1) {
+ ent = readdir(dir);
+ if (ent == NULL || ent->d_name[0] == '\0')
+ break;
+
+ if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#'))
+ continue;
+
+ /* look for file matching with specified suffix */
+ if (suffix != NULL) {
+ const char *ext;
+
+ ext = strrchr(ent->d_name, '.');
+ if (ext == NULL)
+ continue;
+ if (strcmp(ext, suffix) != 0)
+ continue;
+ }
+ dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name);
+
+ snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
+ filename[sizeof(filename)-1] = '\0';
+ udev_list_entry_add(udev, file_list, filename, NULL, 1, 1);
+ }
+
+ closedir(dir);
+ return 0;
+}
+
+int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names)
+{
+ struct stat statbuf;
+ char filename[PATH_MAX];
+ struct udev_list_node file_list;
+ struct udev_list_entry *file_loop, *file_tmp;
+ int retval = 0;
+
+ memset(rules, 0x00, sizeof(struct udev_rules));
+ rules->udev = udev;
+ rules->resolve_names = resolve_names;
+ udev_list_init(&file_list);
+
+ if (udev_get_rules_path(udev) != NULL) {
+ /* custom rules location for testing */
+ add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
+ } else {
+ struct udev_list_node sort_list;
+ struct udev_list_entry *sort_loop, *sort_tmp;
+
+ /* read user/custom rules */
+ add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules");
+
+ /* read dynamic/temporary rules */
+ util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
+ util_strlcat(filename, "/.udev/rules.d", sizeof(filename));
+ if (stat(filename, &statbuf) != 0) {
+ create_path(udev, filename);
+ udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755);
+ mkdir(filename, 0755);
+ udev_selinux_resetfscreatecon(udev);
+ }
+ udev_list_init(&sort_list);
+ add_matching_files(udev, &sort_list, filename, ".rules");
+
+ /* read default rules */
+ add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules");
+
+ /* sort all rules files by basename into list of files */
+ udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) {
+ const char *sort_name = udev_list_entry_get_name(sort_loop);
+ const char *sort_base = strrchr(sort_name, '/');
+
+ if (sort_base == NULL)
+ continue;
+
+ udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
+ const char *file_name = udev_list_entry_get_name(file_loop);
+ const char *file_base = strrchr(file_name, '/');
+
+ if (file_base == NULL)
+ continue;
+ if (strcmp(file_base, sort_base) == 0) {
+ info(udev, "rule file basename '%s' already added, ignoring '%s'\n",
+ file_name, sort_name);
+ udev_list_entry_remove(sort_loop);
+ sort_loop = NULL;
+ break;
+ }
+ if (strcmp(file_base, sort_base) > 0)
+ break;
+ }
+ if (sort_loop != NULL)
+ udev_list_entry_move_before(sort_loop, file_loop);
+ }
+ }
+
+ /* parse list of files */
+ udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
+ const char *file_name = udev_list_entry_get_name(file_loop);
+
+ if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
+ parse_file(rules, file_name);
+ else
+ info(udev, "can not read '%s'\n", file_name);
+ udev_list_entry_remove(file_loop);
+ }
+ return retval;
+}
+
+void udev_rules_cleanup(struct udev_rules *rules)
+{
+ if (rules->buf) {
+ free(rules->buf);
+ rules->buf = NULL;
+ }
+}
+++ /dev/null
-/*
- * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2004-2008 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
- * 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/>.
- */
-
-#ifndef UDEV_RULES_H
-#define UDEV_RULES_H
-
-#include "udev.h"
-
-#define PAIRS_MAX 5
-
-enum key_operation {
- KEY_OP_UNSET,
- KEY_OP_MATCH,
- KEY_OP_NOMATCH,
- KEY_OP_ADD,
- KEY_OP_ASSIGN,
- KEY_OP_ASSIGN_FINAL,
-};
-
-struct key {
- enum key_operation operation;
- size_t val_off;
-};
-
-struct key_pair {
- struct key key;
- size_t key_name_off;
-};
-
-struct key_pairs {
- int count;
- struct key_pair keys[PAIRS_MAX];
-};
-
-enum import_type {
- IMPORT_UNSET,
- IMPORT_PROGRAM,
- IMPORT_FILE,
- IMPORT_PARENT,
-};
-
-enum escape_type {
- ESCAPE_UNSET,
- ESCAPE_NONE,
- ESCAPE_REPLACE,
-};
-
-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;
- char *buf;
- size_t bufsize;
- int resolve_names;
-};
-
-struct udev_rules_iter {
- struct udev_rules *rules;
- size_t current;
-};
-
-extern int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names);
-extern void udev_rules_cleanup(struct udev_rules *rules);
-
-extern void udev_rules_iter_init(struct udev_rules_iter *iter, struct udev_rules *rules);
-extern struct udev_rule *udev_rules_iter_next(struct udev_rules_iter *iter);
-extern struct udev_rule *udev_rules_iter_goto(struct udev_rules_iter *iter, size_t rule_off);
-
-extern int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event);
-extern int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event);
-extern int udev_rules_run(struct udev_event *event);
-
-extern void udev_rules_apply_format(struct udev_event *event, char *string, size_t maxsize);
-
-#endif
#define ALLOWED_CHARS_FILE ALLOWED_CHARS "/"
#define ALLOWED_CHARS_INPUT ALLOWED_CHARS_FILE " $%?,"
-#define DEFAULT_PARTITIONS_COUNT 15
+#define DEFAULT_FAKE_PARTITIONS_COUNT 15
#define UDEV_EVENT_TIMEOUT 180
/* linux/include/linux/kobject.h */
#define UDEV_CTRL_SOCK_PATH "@" UDEV_PREFIX "/org/kernel/udev/udevd"
#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b))
-
-/* pipes */
#define READ_END 0
#define WRITE_END 1
-struct udev_rules;
-
static inline void logging_init(const char *program_name)
{
openlog(program_name, LOG_PID | LOG_CONS, LOG_DAEMON);
int exitstatus;
time_t queue_time;
};
+struct udev_rules;
extern struct udev_event *udev_event_new(struct udev_device *dev);
extern void udev_event_unref(struct udev_event *event);
extern int udev_event_run(struct udev_event *event, struct udev_rules *rules);
+/* udev-rules.c */
+struct udev_rules {
+ struct udev *udev;
+ char *buf;
+ size_t bufsize;
+ int resolve_names;
+};
+extern int udev_rules_init(struct udev *udev, struct udev_rules *rules, int resolve_names);
+extern void udev_rules_cleanup(struct udev_rules *rules);
+extern int udev_rules_get_name(struct udev_rules *rules, struct udev_event *event);
+extern int udev_rules_get_run(struct udev_rules *rules, struct udev_event *event);
+extern int udev_rules_run(struct udev_event *event);
+extern void udev_rules_apply_format(struct udev_event *event, char *string, size_t maxsize);
+
/* udev-node.c */
extern int udev_node_mknod(struct udev_device *dev, const char *file, dev_t devnum, mode_t mode, uid_t uid, gid_t gid);
extern int udev_node_add(struct udev_device *dev, mode_t mode, const char *owner, const char *group, int test);
#include <getopt.h>
#include "udev.h"
-#include "udev-rules.h"
int udevadm_test(struct udev *udev, int argc, char *argv[])
{
#endif
#include "udev.h"
-#include "udev-rules.h"
#define UDEVD_PRIORITY -4
#define UDEV_PRIORITY -2
projects / systemd / commitdiff