/*
* udev_rules.c
*
- * Userspace devfs
- *
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2003-2005 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 version 2 of the License.
#include <ctype.h>
#include <unistd.h>
#include <errno.h>
+#include <syslog.h>
#include <sys/wait.h>
+#include <sys/stat.h>
#include "libsysfs/sysfs/libsysfs.h"
#include "list.h"
#include "udev_db.h"
-/* compare string with pattern (supports * ? [0-9] [!A-Z]) */
-static int strcmp_pattern(const char *p, const char *s)
-{
- if (s[0] == '\0') {
- while (p[0] == '*')
- p++;
- return (p[0] != '\0');
- }
- switch (p[0]) {
- case '[':
- {
- int not = 0;
- p++;
- if (p[0] == '!') {
- not = 1;
- p++;
- }
- while ((p[0] != '\0') && (p[0] != ']')) {
- int match = 0;
- if (p[1] == '-') {
- if ((s[0] >= p[0]) && (s[0] <= p[2]))
- match = 1;
- p += 3;
- } else {
- match = (p[0] == s[0]);
- p++;
- }
- if (match ^ not) {
- while ((p[0] != '\0') && (p[0] != ']'))
- p++;
- if (p[0] == ']')
- return strcmp_pattern(p+1, s+1);
- }
- }
- }
- break;
- case '*':
- if (strcmp_pattern(p, s+1))
- return strcmp_pattern(p+1, s);
- return 0;
- case '\0':
- if (s[0] == '\0') {
- return 0;
- }
- break;
- default:
- if ((p[0] == s[0]) || (p[0] == '?'))
- return strcmp_pattern(p+1, s+1);
- break;
- }
- return 1;
-}
-
/* extract possible {attr} and move str behind it */
static char *get_format_attribute(char **str)
{
linepos++;
/* get the value*/
- if (linepos[0] == '\0')
- return -1;
-
if (linepos[0] == '"') {
linepos++;
temp = strchr(linepos, '"');
- if (!temp)
+ if (!temp) {
+ dbg("missing closing quote");
return -1;
+ }
+ dbg("value is quoted");
temp[0] = '\0';
} else if (linepos[0] == '\'') {
linepos++;
temp = strchr(linepos, '\'');
- if (!temp)
+ if (!temp) {
+ dbg("missing closing quote");
return -1;
+ }
+ dbg("value is quoted");
temp[0] = '\0';
+ } else if (linepos[0] == '\0') {
+ dbg("value is empty");
} else {
temp = linepos;
while (temp[0] && !isspace(temp[0]))
return 0;
}
-static int import_keys_into_env(const char *buf, size_t bufsize)
+static int import_keys_into_env(struct udevice *udev, const char *buf, size_t bufsize)
{
char line[LINE_SIZE];
const char *bufline;
size_t count;
int lineno;
- /* loop through the whole file */
+ /* loop through the whole buffer */
lineno = 0;
cur = 0;
while (cur < bufsize) {
if (bufline[0] == COMMENT_CHARACTER)
continue;
- strlcpy(line, bufline, count+1);
+ memcpy(line, bufline, count);
+ line[count] = '\0';
linepos = line;
if (get_key(&linepos, &variable, &value) == 0) {
dbg("import '%s=%s'", variable, value);
+ name_list_key_add(&udev->env_list, variable, value);
setenv(variable, value, 1);
}
}
return 0;
}
-static int import_file_into_env(const char *filename)
+static int import_file_into_env(struct udevice *udev, const char *filename)
{
char *buf;
size_t bufsize;
err("can't open '%s'", filename);
return -1;
}
- import_keys_into_env(buf, bufsize);
+ import_keys_into_env(udev, buf, bufsize);
file_unmap(buf, bufsize);
return 0;
char result[1024];
size_t reslen;
- if (execute_program(program, udev->subsystem, result, sizeof(result), &reslen) != 0)
+ if (run_program(program, udev->subsystem, result, sizeof(result), &reslen, (udev_log_priority >= LOG_INFO)) != 0)
return -1;
- return import_keys_into_env(result, reslen);
+ return import_keys_into_env(udev, result, reslen);
}
-/* finds the lowest positive N such that <name>N isn't present in the udevdb
- * if <name> doesn't exist, 0 is returned, N otherwise
- */
-static int find_free_number(struct udevice *udev, const char *name)
+static int import_parent_into_env(struct udevice *udev, struct sysfs_class_device *class_dev, const char *filter)
{
- char devpath[PATH_SIZE];
+ struct sysfs_class_device *parent = sysfs_get_classdev_parent(class_dev);
+ int rc = -1;
+
+ if (parent != NULL) {
+ struct udevice udev_parent;
+ struct name_entry *name_loop;
+
+ dbg("found parent '%s', get the node name", parent->path);
+ udev_init_device(&udev_parent, NULL, NULL, NULL);
+ /* import the udev_db of the parent */
+ if (udev_db_get_device(&udev_parent, &parent->path[strlen(sysfs_path)]) == 0) {
+ dbg("import stored parent env '%s'", udev_parent.name);
+ list_for_each_entry(name_loop, &udev_parent.env_list, node) {
+ char name[NAME_SIZE];
+ char *pos;
+
+ strlcpy(name, name_loop->name, sizeof(name));
+ pos = strchr(name, '=');
+ if (pos) {
+ pos[0] = '\0';
+ pos++;
+ if (strcmp_pattern(filter, name) == 0) {
+ dbg("import key '%s'", name_loop->name);
+ name_list_add(&udev->env_list, name_loop->name, 0);
+ setenv(name, pos, 1);
+ } else
+ dbg("skip key '%s'", name_loop->name);
+ }
+ }
+ rc = 0;
+ } else
+ dbg("parent not found in database");
+ udev_cleanup_device(&udev_parent);
+ }
+
+ return rc;
+}
+
+static int match_name_and_get_number(const char *base, const char *devname)
+{
+ size_t baselen;
+ char *endptr;
+ int num;
+
+ baselen = strlen(base);
+ if (strncmp(base, devname, baselen) != 0)
+ return -1;
+ if (devname[baselen] == '\0')
+ return 0;
+ if (!isdigit(devname[baselen]))
+ return -1;
+ num = strtoul(&devname[baselen], &endptr, 10);
+ if (endptr[0] != '\0')
+ return -1;
+ return num;
+}
+
+/* finds the lowest positive device number such that <name>N isn't present in the udevdb
+ * if <name> doesn't exist, 0 is returned, N otherwise */
+static int find_free_number(const char *base, const char *devpath)
+{
+ char db_devpath[PATH_SIZE];
char filename[PATH_SIZE];
+ struct udevice udev_db;
int num = 0;
- strlcpy(filename, name, sizeof(filename));
+ /* check if the device already owns a matching name */
+ udev_init_device(&udev_db, NULL, NULL, NULL);
+ if (udev_db_get_device(&udev_db, devpath) == 0) {
+ struct name_entry *name_loop;
+ int devnum;
+
+ devnum = match_name_and_get_number(base, udev_db.name);
+ if (devnum >= 0) {
+ num = devnum;
+ dbg("device '%s', already has the node '%s' with num %u, use it", devpath, base, num);
+ goto out;
+ }
+ list_for_each_entry(name_loop, &udev_db.symlink_list, node) {
+ devnum = match_name_and_get_number(base, name_loop->name);
+ if (devnum >= 0) {
+ num = devnum;
+ dbg("device '%s', already has a symlink '%s' with num %u, use it", devpath, base, num);
+ goto out;
+ }
+ }
+ }
+
+ /* just search the database again and again until a free name is found */
+ strlcpy(filename, base, sizeof(filename));
while (1) {
dbg("look for existing node '%s'", filename);
- if (udev_db_search_name(devpath, sizeof(devpath), filename) != 0) {
+ if (udev_db_lookup_name(filename, db_devpath, sizeof(db_devpath)) != 0) {
dbg("free num=%d", num);
- return num;
+ break;
}
num++;
- if (num > 1000) {
- info("find_free_number gone crazy (num=%d), aborted", num);
- return -1;
+ if (num > 100000) {
+ err("find_free_number aborted at num=%d", num);
+ num = -1;
+ break;
}
- snprintf(filename, sizeof(filename), "%s%d", name, num);
+ snprintf(filename, sizeof(filename), "%s%d", base, num);
filename[sizeof(filename)-1] = '\0';
}
+
+out:
+ udev_cleanup_device(&udev_db);
+ return num;
}
static int find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device,
const char *name, char *value, size_t len)
{
+ struct sysfs_class_device *class_dev_parent;
struct sysfs_attribute *tmpattr;
dbg("look for device attribute '%s'", name);
tmpattr = sysfs_get_classdev_attr(class_dev, name);
if (tmpattr)
goto attr_found;
+ class_dev_parent = sysfs_get_classdev_parent(class_dev);
+ if (class_dev_parent) {
+ tmpattr = sysfs_get_classdev_attr(class_dev_parent, name);
+ if (tmpattr)
+ goto attr_found;
+ }
}
if (sysfs_device) {
dbg("look for devices attribute '%s/%s'", sysfs_device->path, name);
attr_found:
strlcpy(value, tmpattr->value, len);
- remove_trailing_char(value, '\n');
+ remove_trailing_chars(value, '\n');
dbg("found attribute '%s'", tmpattr->path);
return 0;
}
+#define WAIT_LOOP_PER_SECOND 20
+static int wait_for_sysfs(struct udevice *udev, const char *file, int timeout)
+{
+ char filename[PATH_SIZE];
+ struct stat stats;
+ int loop = timeout * WAIT_LOOP_PER_SECOND;
+
+ snprintf(filename, sizeof(filename), "%s%s/%s", sysfs_path, udev->devpath, file);
+ filename[sizeof(filename)-1] = '\0';
+ dbg("wait %i sec for '%s'", timeout, filename);
+
+ while (--loop) {
+ if (stat(filename, &stats) == 0) {
+ info("file appeared after %i loops", (timeout * WAIT_LOOP_PER_SECOND) - loop-1);
+ return 0;
+ }
+ usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND);
+ }
+ info("waiting for '%s' failed", filename);
+ return -1;
+}
+
static void apply_format(struct udevice *udev, char *string, size_t maxsize,
struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
{
char *head, *tail, *pos, *cpos, *attr, *rest;
int len;
int i;
+ int count;
unsigned int next_free_number;
struct sysfs_class_device *class_dev_parent;
enum subst_type {
{ .name = "root", .fmt = 'r', .type = SUBST_ROOT },
{ .name = "modalias", .fmt = 'A', .type = SUBST_MODALIAS },
{ .name = "env", .fmt = 'E', .type = SUBST_ENV },
- {}
+ { NULL, '\0', 0 }
};
enum subst_type type;
const struct subst_map *subst;
i = strlen(temp2);
while (i > 0 && isspace(temp2[i-1]))
temp2[--i] = '\0';
- replace_untrusted_chars(temp2);
+ count = replace_untrusted_chars(temp2);
+ if (count)
+ info("%i untrusted character(s) replaced" , count);
strlcat(string, temp2, maxsize);
dbg("substitute sysfs value '%s'", temp2);
break;
case SUBST_ENUM:
- next_free_number = find_free_number(udev, string);
+ next_free_number = find_free_number(string, udev->devpath);
if (next_free_number > 0) {
sprintf(temp2, "%d", next_free_number);
strlcat(string, temp2, maxsize);
break;
}
pos = getenv(attr);
- if (pos == NULL)
+ if (pos == NULL) {
+ dbg("env '%s' not available", attr);
break;
- strlcat(string, pos, maxsize);
+ }
dbg("substitute env '%s=%s'", attr, pos);
+ strlcat(string, pos, maxsize);
break;
default:
err("unknown substitution type=%i", type);
}
}
+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(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
+{
+ int match;
+ char value[PATH_SIZE];
+ char *key_value;
+ char *pos;
+
+ if (key->operation == KEY_OP_UNSET)
+ return 0;
+
+ strlcpy(value, rule->buf + key->val_off, sizeof(value));
+ key_value = value;
+
+ dbg("key %s value='%s'", key_name, key_value);
+ while (key_value) {
+ pos = strchr(key_value, '|');
+ if (pos) {
+ pos[0] = '\0';
+ pos++;
+ }
+ dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
+ match = (strcmp_pattern(key_value, val) == 0);
+ if (match && (key->operation != KEY_OP_NOMATCH)) {
+ dbg("%s is true (matching value)", key_name);
+ return 0;
+ }
+ if (!match && (key->operation == KEY_OP_NOMATCH)) {
+ dbg("%s is true (non-matching value)", key_name);
+ return 0;
+ }
+ key_value = pos;
+ }
+ dbg("%s is false", key_name);
+ return -1;
+}
+
+/* match a single rule against a given device and possibly its parent devices */
static int match_rule(struct udevice *udev, struct udev_rule *rule,
struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
{
struct sysfs_device *parent_device = sysfs_device;
+ int i;
- if (rule->action_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_ACTION " rule->action='%s' udev->action='%s'",
- rule->action, udev->action);
- if (strcmp_pattern(rule->action, udev->action) != 0) {
- dbg(KEY_ACTION " is not matching");
- if (rule->action_operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_ACTION " matches");
- if (rule->action_operation == KEY_OP_NOMATCH)
- goto exit;
- }
- dbg(KEY_ACTION " key is true");
- }
+ if (match_key("ACTION", rule, &rule->action, udev->action))
+ goto exit;
- if (rule->kernel_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_KERNEL " rule->kernel='%s' udev_kernel_name='%s'",
- rule->kernel, udev->kernel_name);
- if (strcmp_pattern(rule->kernel, udev->kernel_name) != 0) {
- dbg(KEY_KERNEL " is not matching");
- if (rule->kernel_operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_KERNEL " matches");
- if (rule->kernel_operation == KEY_OP_NOMATCH)
- goto exit;
- }
- dbg(KEY_KERNEL " key is true");
- }
+ if (match_key("KERNEL", rule, &rule->kernel_name, udev->kernel_name))
+ goto exit;
- if (rule->subsystem_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_SUBSYSTEM " rule->subsystem='%s' udev->subsystem='%s'",
- rule->subsystem, udev->subsystem);
- if (strcmp_pattern(rule->subsystem, udev->subsystem) != 0) {
- dbg(KEY_SUBSYSTEM " is not matching");
- if (rule->subsystem_operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_SUBSYSTEM " matches");
- if (rule->subsystem_operation == KEY_OP_NOMATCH)
- goto exit;
- }
- dbg(KEY_SUBSYSTEM " key is true");
- }
+ if (match_key("SUBSYSTEM", rule, &rule->subsystem, udev->subsystem))
+ goto exit;
- if (rule->devpath_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_DEVPATH " rule->devpath='%s' udev->devpath='%s'",
- rule->devpath, udev->devpath);
- if (strcmp_pattern(rule->devpath, udev->devpath) != 0) {
- dbg(KEY_DEVPATH " is not matching");
- if (rule->devpath_operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_DEVPATH " matches");
- if (rule->devpath_operation == KEY_OP_NOMATCH)
- goto exit;
- }
- dbg(KEY_DEVPATH " key is true");
- }
+ if (match_key("DEVPATH", rule, &rule->devpath, udev->devpath))
+ goto exit;
- if (rule->modalias_operation != KEY_OP_UNSET) {
+ if (rule->modalias.operation != KEY_OP_UNSET) {
char value[NAME_SIZE];
if (find_sysfs_attribute(NULL, sysfs_device, "modalias", value, sizeof(value)) != 0) {
- dbg(KEY_MODALIAS " value not found");
+ dbg("MODALIAS value not found");
goto exit;
}
- dbg("check for " KEY_MODALIAS " rule->modalias='%s' modalias='%s'",
- rule->modalias, value);
- if (strcmp_pattern(rule->modalias, value) != 0) {
- dbg(KEY_MODALIAS " is not matching");
- if (rule->modalias_operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_MODALIAS " matches");
- if (rule->modalias_operation == KEY_OP_NOMATCH)
- goto exit;
- }
- dbg(KEY_MODALIAS " key is true");
+ if (match_key("MODALIAS", rule, &rule->modalias, value))
+ goto exit;
}
- if (rule->env_pair_count) {
- int i;
+ for (i = 0; i < rule->env.count; i++) {
+ struct key_pair *pair = &rule->env.keys[i];
- dbg("check for " KEY_ENV " pairs");
- for (i = 0; i < rule->env_pair_count; i++) {
- struct key_pair *pair;
- const char *value;
+ /* we only check for matches, assignments will be handled later */
+ if (pair->key.operation != KEY_OP_ASSIGN) {
+ const char *key_name = key_pair_name(rule, pair);
+ const char *value = getenv(key_name);
- pair = &rule->env_pair[i];
- value = getenv(pair->name);
if (!value) {
- dbg(KEY_ENV "{'%s'} is not found", pair->name);
- goto exit;
- }
- if (strcmp_pattern(pair->value, value) != 0) {
- dbg(KEY_ENV "{'%s'} is not matching", pair->name);
- if (pair->operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_ENV "{'%s'} matches", pair->name);
- if (pair->operation == KEY_OP_NOMATCH)
- goto exit;
+ dbg("ENV{'%s'} is not set, treat as empty", key_name);
+ value = "";
}
+ if (match_key("ENV", rule, &pair->key, value))
+ goto exit;
+ }
+ }
+
+ if (rule->wait_for_sysfs.operation != KEY_OP_UNSET) {
+ int match;
+
+ match = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
+ if (match && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH)) {
+ dbg("WAIT_FOR_SYSFS is true (matching value)");
+ return 0;
}
- dbg(KEY_ENV " key is true");
+ if (!match && (rule->wait_for_sysfs.operation == KEY_OP_NOMATCH)) {
+ dbg("WAIT_FOR_SYSFS is true, (non matching value)");
+ return 0;
+ }
+ dbg("WAIT_FOR_SYSFS is false");
+ return -1;
}
/* walk up the chain of physical devices and find a match */
while (1) {
/* check for matching driver */
- if (rule->driver_operation != KEY_OP_UNSET) {
+ if (rule->driver.operation != KEY_OP_UNSET) {
if (parent_device == NULL) {
dbg("device has no sysfs_device");
goto exit;
}
- dbg("check for " KEY_DRIVER " rule->driver='%s' sysfs_device->driver_name='%s'",
- rule->driver, parent_device->driver_name);
- if (strcmp_pattern(rule->driver, parent_device->driver_name) != 0) {
- dbg(KEY_DRIVER " is not matching");
- if (rule->driver_operation != KEY_OP_NOMATCH)
- goto try_parent;
- } else {
- dbg(KEY_DRIVER " matches");
- if (rule->driver_operation == KEY_OP_NOMATCH)
- goto try_parent;
- }
- dbg(KEY_DRIVER " key is true");
+ if (match_key("DRIVER", rule, &rule->driver, parent_device->driver_name))
+ goto try_parent;
}
/* check for matching bus value */
- if (rule->bus_operation != KEY_OP_UNSET) {
+ if (rule->bus.operation != KEY_OP_UNSET) {
if (parent_device == NULL) {
dbg("device has no sysfs_device");
goto exit;
}
- dbg("check for " KEY_BUS " rule->bus='%s' sysfs_device->bus='%s'",
- rule->bus, parent_device->bus);
- if (strcmp_pattern(rule->bus, parent_device->bus) != 0) {
- dbg(KEY_BUS " is not matching");
- if (rule->bus_operation != KEY_OP_NOMATCH)
- goto try_parent;
- } else {
- dbg(KEY_BUS " matches");
- if (rule->bus_operation == KEY_OP_NOMATCH)
- goto try_parent;
- }
- dbg(KEY_BUS " key is true");
+ if (match_key("BUS", rule, &rule->bus, parent_device->bus))
+ goto try_parent;
}
/* check for matching bus id */
- if (rule->id_operation != KEY_OP_UNSET) {
+ if (rule->id.operation != KEY_OP_UNSET) {
if (parent_device == NULL) {
dbg("device has no sysfs_device");
goto exit;
}
- dbg("check " KEY_ID);
- if (strcmp_pattern(rule->id, parent_device->bus_id) != 0) {
- dbg(KEY_ID " is not matching");
- if (rule->id_operation != KEY_OP_NOMATCH)
- goto try_parent;
- } else {
- dbg(KEY_ID " matches");
- if (rule->id_operation == KEY_OP_NOMATCH)
- goto try_parent;
- }
- dbg(KEY_ID " key is true");
+ if (match_key("ID", rule, &rule->id, parent_device->bus_id))
+ goto try_parent;
}
/* check for matching sysfs pairs */
- if (rule->sysfs_pair_count) {
- int i;
-
- dbg("check " KEY_SYSFS " pairs");
- for (i = 0; i < rule->sysfs_pair_count; i++) {
- struct key_pair *pair;
+ if (rule->sysfs.count) {
+ dbg("check %i SYSFS keys", rule->sysfs.count);
+ for (i = 0; i < rule->sysfs.count; i++) {
+ struct key_pair *pair = &rule->sysfs.keys[i];
+ const char *key_name = key_pair_name(rule, pair);
+ const char *key_value = key_val(rule, &pair->key);
char value[VALUE_SIZE];
size_t len;
- pair = &rule->sysfs_pair[i];
- if (find_sysfs_attribute(class_dev, parent_device, pair->name, value, sizeof(value)) != 0)
+ if (find_sysfs_attribute(class_dev, parent_device, key_name, value, sizeof(value)) != 0)
goto try_parent;
/* strip trailing whitespace of value, if not asked to match for it */
- len = strlen(pair->value);
- if (len && !isspace(pair->value[len-1])) {
+ len = strlen(key_value);
+ if (len && !isspace(key_value[len-1])) {
len = strlen(value);
while (len > 0 && isspace(value[len-1]))
value[--len] = '\0';
- dbg("removed %i trailing whitespace chars from '%s'", strlen(value)-len, value);
+ dbg("removed %zi trailing whitespace chars from '%s'", strlen(value)-len, value);
}
- dbg("compare attribute '%s' value '%s' with '%s'", pair->name, value, pair->value);
- if (strcmp_pattern(pair->value, value) != 0) {
- dbg(KEY_SYSFS "{'%s'} is not matching", pair->name);
- if (pair->operation != KEY_OP_NOMATCH)
- goto try_parent;
- } else {
- dbg(KEY_SYSFS "{'%s'} matches", pair->name);
- if (pair->operation == KEY_OP_NOMATCH)
- goto try_parent;
- }
+ if (match_key("SYSFS", rule, &pair->key, value))
+ goto try_parent;
}
- dbg(KEY_SYSFS " keys are true");
+ dbg("all %i SYSFS keys matched", rule->sysfs.count);
}
/* found matching physical device */
dbg("look at sysfs_device->bus_id='%s'", parent_device->bus_id);
}
- /* import variables from file into environment */
- if (rule->import_operation != KEY_OP_UNSET) {
- char import[PATH_SIZE];
- int rc = -1;
-
- strlcpy(import, rule->import, sizeof(import));
- apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
- dbg("check for " KEY_IMPORT " import='%s'", import);
- if (rule->import_exec) {
- dbg("run executable file import='%s'", import);
- rc = import_program_into_env(udev, import);
- } else {
- dbg("import file import='%s'", import);
- rc = import_file_into_env(import);
- }
- if (rc) {
- dbg(KEY_IMPORT " failed");
- if (rule->import_operation != KEY_OP_NOMATCH)
- goto exit;
- } else
- dbg(KEY_IMPORT " '%s' imported", rule->import);
- dbg(KEY_IMPORT " key is true");
- }
-
/* execute external program */
- if (rule->program_operation != KEY_OP_UNSET) {
+ if (rule->program.operation != KEY_OP_UNSET) {
char program[PATH_SIZE];
char result[PATH_SIZE];
- strlcpy(program, rule->program, sizeof(program));
+ strlcpy(program, key_val(rule, &rule->program), sizeof(program));
apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
- dbg("check for " KEY_PROGRAM " program='%s", program);
- if (execute_program(program, udev->subsystem, result, sizeof(result), NULL) != 0) {
- dbg(KEY_PROGRAM " is not matching");
- if (rule->program_operation != KEY_OP_NOMATCH)
+ if (run_program(program, udev->subsystem, result, sizeof(result), NULL, (udev_log_priority >= LOG_INFO)) != 0) {
+ dbg("PROGRAM is false");
+ udev->program_result[0] = '\0';
+ if (rule->program.operation != KEY_OP_NOMATCH)
goto exit;
} else {
- dbg(KEY_PROGRAM " matches");
- remove_trailing_char(result, '\n');
- replace_untrusted_chars(result);
+ int count;
+
+ dbg("PROGRAM matches");
+ remove_trailing_chars(result, '\n');
+ count = replace_untrusted_chars(result);
+ if (count)
+ info("%i untrusted character(s) replaced" , count);
dbg("result is '%s'", result);
strlcpy(udev->program_result, result, sizeof(udev->program_result));
- dbg(KEY_PROGRAM " returned successful");
- if (rule->program_operation == KEY_OP_NOMATCH)
+ dbg("PROGRAM returned successful");
+ if (rule->program.operation == KEY_OP_NOMATCH)
goto exit;
}
- dbg(KEY_PROGRAM " key is true");
+ dbg("PROGRAM key is true");
}
/* check for matching result of external program */
- if (rule->result_operation != KEY_OP_UNSET) {
- dbg("check for " KEY_RESULT " rule->result='%s', udev->program_result='%s'",
- rule->result, udev->program_result);
- if (strcmp_pattern(rule->result, udev->program_result) != 0) {
- dbg(KEY_RESULT " is not matching");
- if (rule->result_operation != KEY_OP_NOMATCH)
- goto exit;
- } else {
- dbg(KEY_RESULT " matches");
- if (rule->result_operation == KEY_OP_NOMATCH)
+ if (match_key("RESULT", rule, &rule->result, udev->program_result))
+ goto exit;
+
+ /* import variables returned from program or or file into environment */
+ if (rule->import.operation != KEY_OP_UNSET) {
+ char import[PATH_SIZE];
+ int rc = -1;
+
+ strlcpy(import, key_val(rule, &rule->import), sizeof(import));
+ apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
+ dbg("check for IMPORT import='%s'", import);
+ if (rule->import_type == IMPORT_PROGRAM) {
+ rc = import_program_into_env(udev, import);
+ } else if (rule->import_type == IMPORT_FILE) {
+ dbg("import file import='%s'", import);
+ rc = import_file_into_env(udev, import);
+ } else if (rule->import_type == IMPORT_PARENT && class_dev) {
+ dbg("import parent import='%s'", import);
+ rc = import_parent_into_env(udev, class_dev, import);
+ }
+ if (rc) {
+ dbg("IMPORT failed");
+ if (rule->import.operation != KEY_OP_NOMATCH)
goto exit;
+ } else
+ dbg("IMPORT '%s' imported", key_val(rule, &rule->import));
+ dbg("IMPORT key is true");
+ }
+
+ /* 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) {
+ const char *key_name = key_pair_name(rule, pair);
+ const char *value = key_val(rule, &pair->key);
+
+ name_list_key_add(&udev->env_list, key_name, value);
+ setenv(key_name, value, 1);
+ dbg("export ENV '%s=%s'", key_name, value);
}
- dbg(KEY_RESULT " key is true");
}
- /* rule matches */
return 0;
exit:
return -1;
}
-int udev_rules_get_name(struct udevice *udev, struct sysfs_class_device *class_dev)
+int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev, struct sysfs_class_device *class_dev)
{
struct sysfs_class_device *class_dev_parent;
struct sysfs_device *sysfs_device = NULL;
struct udev_rule *rule;
+ int name_set = 0;
dbg("class_dev->name='%s'", class_dev->name);
dbg("udev->kernel_name='%s'", udev->kernel_name);
/* look for a matching rule to apply */
- udev_rules_iter_init();
+ udev_rules_iter_init(rules);
while (1) {
- rule = udev_rules_iter_next();
+ rule = udev_rules_iter_next(rules);
if (rule == NULL)
break;
- if (udev->name_set && rule->name_operation != KEY_OP_UNSET) {
+ if (name_set && rule->name.operation != KEY_OP_UNSET) {
dbg("node name already set, rule ignored");
continue;
}
if (match_rule(udev, rule, class_dev, sysfs_device) == 0) {
/* apply options */
if (rule->ignore_device) {
- info("configured rule in '%s[%i]' applied, '%s' is ignored",
- rule->config_file, rule->config_line, udev->kernel_name);
+ info("rule applied, '%s' is ignored", udev->kernel_name);
udev->ignore_device = 1;
return 0;
}
if (rule->mode_operation == KEY_OP_ASSIGN_FINAL)
udev->mode_final = 1;
udev->mode = rule->mode;
- dbg("applied mode=%#o to '%s'", udev->mode, udev->kernel_name);
+ dbg("applied mode=%#o to '%s'", rule->mode, udev->kernel_name);
}
- if (!udev->owner_final && rule->owner[0] != '\0') {
- if (rule->owner_operation == KEY_OP_ASSIGN_FINAL)
+ if (!udev->owner_final && rule->owner.operation != KEY_OP_UNSET) {
+ if (rule->owner.operation == KEY_OP_ASSIGN_FINAL)
udev->owner_final = 1;
- strlcpy(udev->owner, rule->owner, sizeof(udev->owner));
+ strlcpy(udev->owner, key_val(rule, &rule->owner), sizeof(udev->owner));
apply_format(udev, udev->owner, sizeof(udev->owner), class_dev, sysfs_device);
dbg("applied owner='%s' to '%s'", udev->owner, udev->kernel_name);
}
- if (!udev->group_final && rule->group[0] != '\0') {
- if (rule->group_operation == KEY_OP_ASSIGN_FINAL)
+ if (!udev->group_final && rule->group.operation != KEY_OP_UNSET) {
+ if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
udev->group_final = 1;
- strlcpy(udev->group, rule->group, sizeof(udev->group));
+ strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
dbg("applied group='%s' to '%s'", udev->group, udev->kernel_name);
}
/* collect symlinks */
- if (!udev->symlink_final && rule->symlink_operation != KEY_OP_UNSET) {
+ if (!udev->symlink_final && rule->symlink.operation != KEY_OP_UNSET) {
char temp[PATH_SIZE];
char *pos, *next;
+ int count;
- if (rule->symlink_operation == KEY_OP_ASSIGN_FINAL)
+ if (rule->symlink.operation == KEY_OP_ASSIGN_FINAL)
udev->symlink_final = 1;
- if (rule->symlink_operation == KEY_OP_ASSIGN || rule->symlink_operation == KEY_OP_ASSIGN_FINAL) {
- struct name_entry *name_loop;
- struct name_entry *temp_loop;
-
+ if (rule->symlink.operation == KEY_OP_ASSIGN || rule->symlink.operation == KEY_OP_ASSIGN_FINAL) {
info("reset symlink list");
- list_for_each_entry_safe(name_loop, temp_loop, &udev->symlink_list, node) {
- list_del(&name_loop->node);
- free(name_loop);
- }
+ name_list_cleanup(&udev->symlink_list);
}
- if (rule->symlink[0] != '\0') {
- info("configured rule in '%s[%i]' applied, added symlink '%s'",
- rule->config_file, rule->config_line, rule->symlink);
- strlcpy(temp, rule->symlink, sizeof(temp));
- apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
-
- /* add multiple symlinks separated by spaces */
- pos = temp;
- next = strchr(temp, ' ');
- while (next) {
- next[0] = '\0';
- info("add symlink '%s'", pos);
- name_list_add(&udev->symlink_list, pos, 0);
- pos = &next[1];
- next = strchr(pos, ' ');
- }
+ strlcpy(temp, key_val(rule, &rule->symlink), sizeof(temp));
+ apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
+ count = replace_untrusted_chars(temp);
+ if (count)
+ info("%i untrusted character(s) replaced" , count);
+ dbg("rule applied, added symlink(s) '%s'", temp);
+
+ /* add multiple symlinks separated by spaces */
+ pos = temp;
+ while (isspace(pos[0]))
+ pos++;
+ next = strchr(pos, ' ');
+ while (next) {
+ next[0] = '\0';
+ info("add symlink '%s'", pos);
+ name_list_add(&udev->symlink_list, pos, 0);
+ while (isspace(next[1]))
+ next++;
+ pos = &next[1];
+ next = strchr(pos, ' ');
+ }
+ if (pos[0] != '\0') {
info("add symlink '%s'", pos);
name_list_add(&udev->symlink_list, pos, 0);
}
}
/* set name, later rules with name set will be ignored */
- if (rule->name_operation != KEY_OP_UNSET) {
- udev->name_set = 1;
- if (rule->name[0] == '\0') {
- info("configured rule in '%s[%i]' applied, node handling for '%s' supressed",
- rule->config_file, rule->config_line, udev->kernel_name);
- } else {
- strlcpy(udev->name, rule->name, sizeof(udev->name));
- apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
- strlcpy(udev->config_file, rule->config_file, sizeof(udev->config_file));
- udev->config_line = rule->config_line;
-
- info("configured rule in '%s:%i' applied, '%s' becomes '%s'",
- rule->config_file, rule->config_line, udev->kernel_name, rule->name);
- if (udev->type != DEV_NET)
- dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
- udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
- }
+ if (rule->name.operation != KEY_OP_UNSET) {
+ int count;
+ name_set = 1;
+ strlcpy(udev->name, key_val(rule, &rule->name), sizeof(udev->name));
+ apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
+ count = replace_untrusted_chars(udev->name);
+ if (count)
+ info("%i untrusted character(s) replaced", count);
+
+ info("rule applied, '%s' becomes '%s'", udev->kernel_name, udev->name);
+ if (udev->type != DEV_NET)
+ dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
+ udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
}
- if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
+ if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
char program[PATH_SIZE];
- if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
+ if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
udev->run_final = 1;
- if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
- struct name_entry *name_loop;
- struct name_entry *temp_loop;
-
+ if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
info("reset run list");
- list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
- list_del(&name_loop->node);
- free(name_loop);
- }
- }
- if (rule->run[0] != '\0') {
- strlcpy(program, rule->run, sizeof(program));
- apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
- dbg("add run '%s'", program);
- name_list_add(&udev->run_list, program, 0);
+ name_list_cleanup(&udev->run_list);
}
+ strlcpy(program, key_val(rule, &rule->run), sizeof(program));
+ apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
+ dbg("add run '%s'", program);
+ name_list_add(&udev->run_list, program, 0);
}
if (rule->last_rule) {
dbg("last rule to be applied");
break;
}
+
+ if (rule->goto_label.operation != KEY_OP_UNSET) {
+ dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
+ udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
+ }
}
}
- if (udev->name[0] == '\0') {
+ if (!name_set) {
strlcpy(udev->name, udev->kernel_name, sizeof(udev->name));
- info("no rule found, use kernel name '%s'", udev->name);
+ info("no node name set, will use kernel name '%s'", udev->name);
}
if (udev->tmp_node[0] != '\0') {
return 0;
}
-int udev_rules_get_run(struct udevice *udev, struct sysfs_device *sysfs_device)
+int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev,
+ struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_dev)
{
struct udev_rule *rule;
+ if (class_dev && !sysfs_dev)
+ sysfs_dev = sysfs_get_classdev_device(class_dev);
+ if (sysfs_dev) {
+ dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
+ sysfs_dev->path, sysfs_dev->bus_id, sysfs_dev->bus);
+ strlcpy(udev->bus_id, sysfs_dev->bus_id, sizeof(udev->bus_id));
+ }
+
+ dbg("udev->kernel_name='%s'", udev->kernel_name);
+
/* look for a matching rule to apply */
- udev_rules_iter_init();
+ udev_rules_iter_init(rules);
while (1) {
- rule = udev_rules_iter_next();
+ rule = udev_rules_iter_next(rules);
if (rule == NULL)
break;
dbg("process rule");
- if (rule->run_operation == KEY_OP_UNSET)
- continue;
-
- if (rule->name_operation != KEY_OP_UNSET || rule->symlink_operation != KEY_OP_UNSET ||
- rule->mode != 0000 || rule->owner[0] != '\0' || rule->group[0] != '\0') {
+ if (rule->name.operation != KEY_OP_UNSET || rule->symlink.operation != KEY_OP_UNSET ||
+ rule->mode_operation != KEY_OP_UNSET || rule->owner.operation != KEY_OP_UNSET || rule->group.operation != KEY_OP_UNSET) {
dbg("skip rule that names a device");
continue;
}
- if (match_rule(udev, rule, NULL, sysfs_device) == 0) {
+ if (match_rule(udev, rule, class_dev, sysfs_dev) == 0) {
if (rule->ignore_device) {
- info("configured rule in '%s[%i]' applied, '%s' is ignored",
- rule->config_file, rule->config_line, udev->kernel_name);
+ info("rule applied, '%s' is ignored", udev->kernel_name);
udev->ignore_device = 1;
return 0;
}
- if (!udev->run_final && rule->run_operation != KEY_OP_UNSET) {
+ if (!udev->run_final && rule->run.operation != KEY_OP_UNSET) {
char program[PATH_SIZE];
- if (rule->run_operation == KEY_OP_ASSIGN || rule->run_operation == KEY_OP_ASSIGN_FINAL) {
- struct name_entry *name_loop;
- struct name_entry *temp_loop;
-
+ if (rule->run.operation == KEY_OP_ASSIGN || rule->run.operation == KEY_OP_ASSIGN_FINAL) {
info("reset run list");
- list_for_each_entry_safe(name_loop, temp_loop, &udev->run_list, node) {
- list_del(&name_loop->node);
- free(name_loop);
- }
+ name_list_cleanup(&udev->run_list);
}
- if (rule->run[0] != '\0') {
- strlcpy(program, rule->run, sizeof(program));
- apply_format(udev, program, sizeof(program), NULL, sysfs_device);
- dbg("add run '%s'", program);
- name_list_add(&udev->run_list, program, 0);
- }
- if (rule->run_operation == KEY_OP_ASSIGN_FINAL)
+ strlcpy(program, key_val(rule, &rule->run), sizeof(program));
+ apply_format(udev, program, sizeof(program), class_dev, sysfs_dev);
+ dbg("add run '%s'", program);
+ name_list_add(&udev->run_list, program, 0);
+ if (rule->run.operation == KEY_OP_ASSIGN_FINAL)
break;
}
dbg("last rule to be applied");
break;
}
+
+ if (rule->goto_label.operation != KEY_OP_UNSET) {
+ dbg("moving forward to label '%s'", key_val(rule, &rule->goto_label));
+ udev_rules_iter_label(rules, key_val(rule, &rule->goto_label));
+ }
}
}
~ianmdlvl / elogind.git / blobdiff