summaryrefslogtreecommitdiff
path: root/udev_rules.c
diff options
context:
space:
mode:
Diffstat (limited to 'udev_rules.c')
-rw-r--r--udev_rules.c778
1 files changed, 778 insertions, 0 deletions
diff --git a/udev_rules.c b/udev_rules.c
new file mode 100644
index 0000000000..cbdf7de317
--- /dev/null
+++ b/udev_rules.c
@@ -0,0 +1,778 @@
+/*
+ * 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.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+
+#include "libsysfs/sysfs/libsysfs.h"
+#include "list.h"
+#include "udev_libc_wrapper.h"
+#include "udev.h"
+#include "udev_utils.h"
+#include "udev_version.h"
+#include "logging.h"
+#include "udev_rules.h"
+#include "udev_db.h"
+
+static struct sysfs_attribute *find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, char *attr);
+
+/* 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)
+{
+ char *pos;
+ char *attr = NULL;
+
+ if (*str[0] == '{') {
+ pos = strchr(*str, '}');
+ if (pos == NULL) {
+ dbg("missing closing brace for format");
+ return NULL;
+ }
+ pos[0] = '\0';
+ attr = *str+1;
+ *str = pos+1;
+ dbg("attribute='%s', str='%s'", attr, *str);
+ }
+ return attr;
+}
+
+/* extract possible format length and move str behind it*/
+static int get_format_len(char **str)
+{
+ int num;
+ char *tail;
+
+ if (isdigit(*str[0])) {
+ num = (int) strtoul(*str, &tail, 10);
+ if (num > 0) {
+ *str = tail;
+ dbg("format length=%i", num);
+ return num;
+ } else {
+ dbg("format parsing error '%s'", *str);
+ }
+ }
+ return -1;
+}
+
+/** Finds the lowest positive N such that <name>N isn't present in
+ * $(udevroot) either as a file or a symlink.
+ *
+ * @param name Name to check for
+ * @return 0 if <name> didn't exist and N otherwise.
+ */
+static int find_free_number(struct udevice *udev, const char *name)
+{
+ char devpath[PATH_SIZE];
+ char filename[PATH_SIZE];
+ int num = 0;
+
+ strlcpy(filename, name, sizeof(filename));
+ while (1) {
+ dbg("look for existing node '%s'", filename);
+ if (udev_db_search_name(devpath, sizeof(devpath), filename) != 0) {
+ dbg("free num=%d", num);
+ return num;
+ }
+
+ num++;
+ if (num > 1000) {
+ info("find_free_number gone crazy (num=%d), aborted", num);
+ return -1;
+ }
+ snprintf(filename, sizeof(filename), "%s%d", name, num);
+ filename[sizeof(filename)-1] = '\0';
+ }
+}
+
+static void apply_format(struct udevice *udev, char *string, size_t maxsize,
+ struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+ char temp[PATH_SIZE];
+ char temp2[PATH_SIZE];
+ char *tail, *pos, *cpos, *attr, *rest;
+ int len;
+ int i;
+ char c;
+ struct sysfs_attribute *tmpattr;
+ unsigned int next_free_number;
+ struct sysfs_class_device *class_dev_parent;
+
+ pos = string;
+ while (1) {
+ pos = strchr(pos, '%');
+ if (pos == NULL)
+ break;
+
+ pos[0] = '\0';
+ tail = pos+1;
+ len = get_format_len(&tail);
+ c = tail[0];
+ strlcpy(temp, tail+1, sizeof(temp));
+ tail = temp;
+ dbg("format=%c, string='%s', tail='%s'",c , string, tail);
+ attr = get_format_attribute(&tail);
+
+ switch (c) {
+ case 'p':
+ strlcat(string, udev->devpath, maxsize);
+ dbg("substitute kernel name '%s'", udev->kernel_name);
+ break;
+ case 'b':
+ strlcat(string, udev->bus_id, maxsize);
+ dbg("substitute bus_id '%s'", udev->bus_id);
+ break;
+ case 'k':
+ strlcat(string, udev->kernel_name, maxsize);
+ dbg("substitute kernel name '%s'", udev->kernel_name);
+ break;
+ case 'n':
+ strlcat(string, udev->kernel_number, maxsize);
+ dbg("substitute kernel number '%s'", udev->kernel_number);
+ break;
+ case 'm':
+ sprintf(temp2, "%d", minor(udev->devt));
+ strlcat(string, temp2, maxsize);
+ dbg("substitute minor number '%s'", temp2);
+ break;
+ case 'M':
+ sprintf(temp2, "%d", major(udev->devt));
+ strlcat(string, temp2, maxsize);
+ dbg("substitute major number '%s'", temp2);
+ break;
+ case 'c':
+ if (udev->program_result[0] == '\0')
+ break;
+ /* get part part of the result string */
+ i = 0;
+ if (attr != NULL)
+ i = strtoul(attr, &rest, 10);
+ if (i > 0) {
+ dbg("request part #%d of result string", i);
+ cpos = udev->program_result;
+ while (--i) {
+ while (cpos[0] != '\0' && !isspace(cpos[0]))
+ cpos++;
+ while (isspace(cpos[0]))
+ cpos++;
+ }
+ if (i > 0) {
+ dbg("requested part of result string not found");
+ break;
+ }
+ strlcpy(temp2, cpos, sizeof(temp2));
+ /* %{2+}c copies the whole string from the second part on */
+ if (rest[0] != '+') {
+ cpos = strchr(temp2, ' ');
+ if (cpos)
+ cpos[0] = '\0';
+ }
+ strlcat(string, temp2, maxsize);
+ dbg("substitute part of result string '%s'", temp2);
+ } else {
+ strlcat(string, udev->program_result, maxsize);
+ dbg("substitute result string '%s'", udev->program_result);
+ }
+ break;
+ case 's':
+ if (!class_dev)
+ break;
+ if (attr == NULL) {
+ dbg("missing attribute");
+ break;
+ }
+ tmpattr = find_sysfs_attribute(class_dev, sysfs_device, attr);
+ if (tmpattr == NULL) {
+ dbg("sysfa attribute '%s' not found", attr);
+ break;
+ }
+ /* strip trailing whitespace of matching value */
+ if (isspace(tmpattr->value[strlen(tmpattr->value)-1])) {
+ i = len = strlen(tmpattr->value);
+ while (i > 0 && isspace(tmpattr->value[i-1]))
+ i--;
+ if (i < len) {
+ tmpattr->value[i] = '\0';
+ dbg("remove %i trailing whitespace chars from '%s'",
+ len - i, tmpattr->value);
+ }
+ }
+ strlcat(string, tmpattr->value, maxsize);
+ dbg("substitute sysfs value '%s'", tmpattr->value);
+ break;
+ case '%':
+ strlcat(string, "%", maxsize);
+ pos++;
+ break;
+ case 'e':
+ next_free_number = find_free_number(udev, string);
+ if (next_free_number > 0) {
+ sprintf(temp2, "%d", next_free_number);
+ strlcat(string, temp2, maxsize);
+ }
+ break;
+ case 'P':
+ if (!class_dev)
+ break;
+ class_dev_parent = sysfs_get_classdev_parent(class_dev);
+ if (class_dev_parent != NULL) {
+ struct udevice udev_parent;
+
+ dbg("found parent '%s', get the node name", class_dev_parent->path);
+ udev_init_device(&udev_parent, NULL, NULL);
+ /* lookup the name in the udev_db with the DEVPATH of the parent */
+ if (udev_db_get_device(&udev_parent, &class_dev_parent->path[strlen(sysfs_path)]) == 0) {
+ strlcat(string, udev_parent.name, maxsize);
+ dbg("substitute parent node name'%s'", udev_parent.name);
+ } else
+ dbg("parent not found in database");
+ udev_cleanup_device(&udev_parent);
+ }
+ break;
+ case 'N':
+ if (udev->tmp_node[0] == '\0') {
+ dbg("create temporary device node for callout");
+ snprintf(udev->tmp_node, sizeof(udev->tmp_node), "%s/.tmp-%u-%u",
+ udev_root, major(udev->devt), minor(udev->devt));
+ udev->tmp_node[sizeof(udev->tmp_node)-1] = '\0';
+ udev_make_node(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
+ }
+ strlcat(string, udev->tmp_node, maxsize);
+ dbg("substitute temporary device node name '%s'", udev->tmp_node);
+ break;
+ case 'r':
+ strlcat(string, udev_root, maxsize);
+ dbg("substitute udev_root '%s'", udev_root);
+ break;
+ default:
+ dbg("unknown substitution type '%%%c'", c);
+ break;
+ }
+ /* truncate to specified length */
+ if (len > 0)
+ pos[len] = '\0';
+
+ strlcat(string, tail, maxsize);
+ }
+}
+
+static int execute_program(struct udevice *udev, const char *path, char *value, int len)
+{
+ int retval;
+ int count;
+ int status;
+ int fds[2];
+ pid_t pid;
+ char *pos;
+ char arg[PATH_SIZE];
+ char *argv[(sizeof(arg) / 2) + 1];
+ int i;
+
+ strlcpy(arg, path, sizeof(arg));
+ i = 0;
+ if (strchr(path, ' ')) {
+ pos = arg;
+ while (pos != NULL) {
+ if (pos[0] == '\'') {
+ /* don't separate if in apostrophes */
+ pos++;
+ argv[i] = strsep(&pos, "\'");
+ while (pos && pos[0] == ' ')
+ pos++;
+ } else {
+ argv[i] = strsep(&pos, " ");
+ }
+ dbg("arg[%i] '%s'", i, argv[i]);
+ i++;
+ }
+ argv[i] = NULL;
+ dbg("execute '%s' with parsed arguments", arg);
+ } else {
+ argv[0] = arg;
+ argv[1] = udev->subsystem;
+ argv[2] = NULL;
+ dbg("execute '%s' with subsystem '%s' argument", arg, argv[1]);
+ }
+
+ retval = pipe(fds);
+ if (retval != 0) {
+ dbg("pipe failed");
+ return -1;
+ }
+
+ pid = fork();
+ switch(pid) {
+ case 0:
+ /* child */
+ /* dup2 write side of pipe to STDOUT */
+ dup2(fds[1], STDOUT_FILENO);
+ retval = execv(arg, argv);
+
+ info(FIELD_PROGRAM " execution of '%s' failed", path);
+ exit(1);
+ case -1:
+ dbg("fork failed");
+ return -1;
+ default:
+ /* parent reads from fds[0] */
+ close(fds[1]);
+ retval = 0;
+ i = 0;
+ while (1) {
+ count = read(fds[0], value + i, len - i-1);
+ if (count <= 0)
+ break;
+
+ i += count;
+ if (i >= len-1) {
+ dbg("result len %d too short", len);
+ retval = -1;
+ break;
+ }
+ }
+
+ if (count < 0) {
+ dbg("read failed with '%s'", strerror(errno));
+ retval = -1;
+ }
+
+ if (i > 0 && value[i-1] == '\n')
+ i--;
+ value[i] = '\0';
+ dbg("result is '%s'", value);
+
+ close(fds[0]);
+ waitpid(pid, &status, 0);
+
+ if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
+ dbg("exec program status 0x%x", status);
+ retval = -1;
+ }
+ }
+ return retval;
+}
+
+static struct sysfs_attribute *find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, char *attr)
+{
+ struct sysfs_attribute *tmpattr = NULL;
+ char *c;
+
+ dbg("look for device attribute '%s'", attr);
+ /* try to find the attribute in the class device directory */
+ tmpattr = sysfs_get_classdev_attr(class_dev, attr);
+ if (tmpattr)
+ goto attr_found;
+
+ /* look in the class device directory if present */
+ if (sysfs_device) {
+ tmpattr = sysfs_get_device_attr(sysfs_device, attr);
+ if (tmpattr)
+ goto attr_found;
+ }
+
+ return NULL;
+
+attr_found:
+ c = strchr(tmpattr->value, '\n');
+ if (c != NULL)
+ c[0] = '\0';
+
+ dbg("found attribute '%s'", tmpattr->path);
+ return tmpattr;
+}
+
+static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
+{
+ struct sysfs_attribute *tmpattr;
+ int i;
+ int len;
+
+ if ((pair == NULL) || (pair->file[0] == '\0') || (pair->value == '\0'))
+ return -ENODEV;
+
+ tmpattr = find_sysfs_attribute(class_dev, sysfs_device, pair->file);
+ if (tmpattr == NULL)
+ return -ENODEV;
+
+ /* strip trailing whitespace of value, if not asked to match for it */
+ if (! isspace(pair->value[strlen(pair->value)-1])) {
+ i = len = strlen(tmpattr->value);
+ while (i > 0 && isspace(tmpattr->value[i-1]))
+ i--;
+ if (i < len) {
+ tmpattr->value[i] = '\0';
+ dbg("remove %i trailing whitespace chars from '%s'",
+ len - i, tmpattr->value);
+ }
+ }
+
+ dbg("compare attribute '%s' value '%s' with '%s'",
+ pair->file, tmpattr->value, pair->value);
+ if (strcmp_pattern(pair->value, tmpattr->value) != 0)
+ return -ENODEV;
+
+ dbg("found matching attribute '%s' with value '%s'",
+ pair->file, pair->value);
+ return 0;
+}
+
+static int match_sysfs_pairs(struct udev_rule *rule, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+ struct sysfs_pair *pair;
+ int i;
+
+ for (i = 0; i < MAX_SYSFS_PAIRS; ++i) {
+ pair = &rule->sysfs_pair[i];
+ if ((pair->file[0] == '\0') || (pair->value[0] == '\0'))
+ break;
+ if (compare_sysfs_attribute(class_dev, sysfs_device, pair) != 0) {
+ dbg("sysfs attribute doesn't match");
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+}
+
+static int match_id(struct udev_rule *rule, struct sysfs_device *sysfs_device)
+{
+ char path[PATH_SIZE];
+ char *temp;
+
+ strlcpy(path, sysfs_device->path, sizeof(path));
+ temp = strrchr(path, '/');
+ temp++;
+ dbg("search '%s' in '%s', path='%s'", rule->id, temp, path);
+ if (strcmp_pattern(rule->id, temp) != 0)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int match_rule(struct udevice *udev, struct udev_rule *rule,
+ struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+ if (rule->kernel[0] != '\0') {
+ dbg("check for " FIELD_KERNEL " rule->kernel='%s' class_dev->name='%s'",
+ rule->kernel, class_dev->name);
+ if (strcmp_pattern(rule->kernel, class_dev->name) != 0) {
+ dbg(FIELD_KERNEL " is not matching");
+ goto exit;
+ }
+ dbg(FIELD_KERNEL " matches");
+ }
+
+ if (rule->subsystem[0] != '\0') {
+ dbg("check for " FIELD_SUBSYSTEM " rule->subsystem='%s' class_dev->name='%s'",
+ rule->subsystem, class_dev->name);
+ if (strcmp_pattern(rule->subsystem, udev->subsystem) != 0) {
+ dbg(FIELD_SUBSYSTEM " is not matching");
+ goto exit;
+ }
+ dbg(FIELD_SUBSYSTEM " matches");
+ }
+
+ /* walk up the chain of physical devices and find a match */
+ while (1) {
+ /* check for matching driver */
+ if (rule->driver[0] != '\0') {
+ if (sysfs_device == NULL) {
+ dbg("device has no sysfs_device");
+ goto try_parent;
+ }
+ dbg("check for " FIELD_DRIVER " rule->driver='%s' sysfs_device->driver_name='%s'",
+ rule->driver, sysfs_device->driver_name);
+ if (strcmp_pattern(rule->driver, sysfs_device->driver_name) != 0) {
+ dbg(FIELD_DRIVER " is not matching");
+ goto try_parent;
+ }
+ dbg(FIELD_DRIVER " matches");
+ }
+
+ /* check for matching bus value */
+ if (rule->bus[0] != '\0') {
+ if (sysfs_device == NULL) {
+ dbg("device has no sysfs_device");
+ goto try_parent;
+ }
+ dbg("check for " FIELD_BUS " rule->bus='%s' sysfs_device->bus='%s'",
+ rule->bus, sysfs_device->bus);
+ if (strcmp_pattern(rule->bus, sysfs_device->bus) != 0) {
+ dbg(FIELD_BUS " is not matching");
+ goto try_parent;
+ }
+ dbg(FIELD_BUS " matches");
+ }
+
+ /* check for matching bus id */
+ if (rule->id[0] != '\0') {
+ if (sysfs_device == NULL) {
+ dbg("device has no sysfs_device");
+ goto try_parent;
+ }
+ dbg("check " FIELD_ID);
+ if (match_id(rule, sysfs_device) != 0) {
+ dbg(FIELD_ID " is not matching");
+ goto try_parent;
+ }
+ dbg(FIELD_ID " matches");
+ }
+
+ /* check for matching sysfs pairs */
+ if (rule->sysfs_pair[0].file[0] != '\0') {
+ dbg("check " FIELD_SYSFS " pairs");
+ if (match_sysfs_pairs(rule, class_dev, sysfs_device) != 0) {
+ dbg(FIELD_SYSFS " is not matching");
+ goto try_parent;
+ }
+ dbg(FIELD_SYSFS " matches");
+ }
+
+ /* found matching physical device */
+ break;
+try_parent:
+ dbg("try parent sysfs device");
+ sysfs_device = sysfs_get_device_parent(sysfs_device);
+ if (sysfs_device == NULL)
+ goto exit;
+ dbg("sysfs_device->path='%s'", sysfs_device->path);
+ dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
+ }
+
+ /* execute external program */
+ if (rule->program[0] != '\0') {
+ char program[PATH_SIZE];
+
+ dbg("check " FIELD_PROGRAM);
+ strlcpy(program, rule->program, sizeof(program));
+ apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
+ if (execute_program(udev, program, udev->program_result, sizeof(udev->program_result)) != 0) {
+ dbg(FIELD_PROGRAM " returned nonzero");
+ goto try_parent;
+ }
+ dbg(FIELD_PROGRAM " returned successful");
+ }
+
+ /* check for matching result of external program */
+ if (rule->result[0] != '\0') {
+ dbg("check for " FIELD_RESULT "rule->result='%s', udev->program_result='%s'",
+ rule->result, udev->program_result);
+ if (strcmp_pattern(rule->result, udev->program_result) != 0) {
+ dbg(FIELD_RESULT " is not matching");
+ goto try_parent;
+ }
+ dbg(FIELD_RESULT " matches");
+ }
+
+ /* rule matches */
+ return 0;
+
+exit:
+ return -1;
+}
+
+int udev_rules_get_name(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;
+
+ dbg("class_dev->name='%s'", class_dev->name);
+
+ /* Figure out where the "device"-symlink is at. For char devices this will
+ * always be in the class_dev->path. On block devices, only the main block
+ * device will have the device symlink in it's path. All partition devices
+ * need to look at the symlink in its parent directory.
+ */
+ class_dev_parent = sysfs_get_classdev_parent(class_dev);
+ if (class_dev_parent != NULL) {
+ dbg("given class device has a parent, use this instead");
+ sysfs_device = sysfs_get_classdev_device(class_dev_parent);
+ } else {
+ sysfs_device = sysfs_get_classdev_device(class_dev);
+ }
+
+ if (sysfs_device) {
+ dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
+ sysfs_device->path, sysfs_device->bus_id, sysfs_device->bus);
+ strlcpy(udev->bus_id, sysfs_device->bus_id, sizeof(udev->bus_id));
+ }
+
+ dbg("udev->kernel_name='%s'", udev->kernel_name);
+
+ /* look for a matching rule to apply */
+ list_for_each_entry(rule, &udev_rule_list, node) {
+ dbg("process rule");
+ 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);
+ return -1;
+ }
+ if (rule->ignore_remove) {
+ udev->ignore_remove = 1;
+ dbg("remove event should be ignored");
+ }
+ /* apply all_partitions option only at a main block device */
+ if (rule->partitions && udev->type == DEV_BLOCK && udev->kernel_number[0] == '\0') {
+ udev->partitions = rule->partitions;
+ dbg("creation of partition nodes requested");
+ }
+
+ /* apply permissions */
+ if (rule->mode != 0000) {
+ udev->mode = rule->mode;
+ dbg("applied mode=%#o to '%s'", udev->mode, udev->kernel_name);
+ }
+ if (rule->owner[0] != '\0') {
+ strlcpy(udev->owner, 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 (rule->group[0] != '\0') {
+ strlcpy(udev->group, 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 (rule->symlink[0] != '\0') {
+ char temp[PATH_SIZE];
+ char *pos, *next;
+
+ 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';
+ dbg("add symlink '%s'", pos);
+ name_list_add(&udev->symlink_list, pos, 0);
+ pos = &next[1];
+ next = strchr(pos, ' ');
+ }
+ dbg("add symlink '%s'", pos);
+ name_list_add(&udev->symlink_list, pos, 0);
+ }
+
+ /* rule matches */
+ if (rule->name[0] != '\0') {
+ info("configured rule in '%s[%i]' applied, '%s' becomes '%s'",
+ rule->config_file, rule->config_line, udev->kernel_name, rule->name);
+
+ 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;
+
+ 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);
+
+ break;
+ }
+ }
+ }
+
+ if (udev->name[0] == '\0') {
+ /* no rule matched, so we use the kernel name */
+ strlcpy(udev->name, udev->kernel_name, sizeof(udev->name));
+ dbg("no rule found, use kernel name '%s'", udev->name);
+ }
+
+ if (udev->tmp_node[0] != '\0') {
+ dbg("removing temporary device node");
+ unlink_secure(udev->tmp_node);
+ udev->tmp_node[0] = '\0';
+ }
+
+ return 0;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 08:26:19 +0000