* 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
#include <errno.h>
#include <sys/wait.h>
#include <sys/stat.h>
-#include <sys/sysinfo.h>
#include "libsysfs/sysfs/libsysfs.h"
#include "list.h"
#include "udev.h"
-#include "udev_lib.h"
+#include "udev_utils.h"
#include "udev_version.h"
#include "logging.h"
#include "namedev.h"
static struct sysfs_attribute *find_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, char *attr);
-LIST_HEAD(config_device_list);
-LIST_HEAD(perm_device_list);
-
-
/* compare string with pattern (supports * ? [0-9] [!A-Z]) */
static int strcmp_pattern(const char *p, const char *s)
{
return 1;
}
-static struct perm_device *find_perm(char *name)
-{
- struct perm_device *perm;
-
- list_for_each_entry(perm, &perm_device_list, node) {
- if (strcmp_pattern(perm->name, name))
- continue;
- return perm;
- }
- return NULL;
-}
-
-static mode_t get_default_mode(void)
-{
- mode_t mode = 0600; /* default to owner rw only */
-
- if (strlen(default_mode_str) != 0)
- mode = strtol(default_mode_str, NULL, 8);
-
- return mode;
-}
-
-static char *get_default_owner(void)
-{
- if (strlen(default_owner_str) == 0)
- strfieldcpy(default_owner_str, "root");
-
- return default_owner_str;
-}
-
-static char *get_default_group(void)
-{
- if (strlen(default_group_str) == 0)
- strfieldcpy(default_group_str, "root");
-
- return default_group_str;
-}
-
/* extract possible {attr} and move str behind it */
static char *get_format_attribute(char **str)
{
int slen;
struct sysfs_attribute *tmpattr;
unsigned int next_free_number;
+ struct sysfs_class_device *class_dev_parent;
pos = string;
while (1) {
switch (c) {
+ case 'p':
+ if (strlen(udev->devpath) == 0)
+ break;
+ strfieldcatmax(string, udev->devpath, maxsize);
+ dbg("substitute kernel name '%s'", udev->kernel_name);
+ break;
case 'b':
if (strlen(udev->bus_id) == 0)
break;
dbg("substitute kernel number '%s'", udev->kernel_number);
break;
case 'm':
- strintcatmax(string, udev->minor, maxsize);
- dbg("substitute minor number '%u'", udev->minor);
+ strintcatmax(string, minor(udev->devt), maxsize);
+ dbg("substitute minor number '%u'", minor(udev->devt));
break;
case 'M':
- strintcatmax(string, udev->major, maxsize);
- dbg("substitute major number '%u'", udev->major);
+ strintcatmax(string, major(udev->devt), maxsize);
+ dbg("substitute major number '%u'", major(udev->devt));
break;
case 'c':
if (strlen(udev->program_result) == 0)
strfieldcatmax(string, temp2, maxsize);
}
break;
+ case 'P':
+ 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);
+ memset(&udev_parent, 0x00, sizeof(struct udevice));
+ /* lookup the name in the udev_db with the DEVPATH of the parent */
+ strfieldcpy(udev_parent.devpath, &class_dev_parent->path[strlen(sysfs_path)]);
+ if (udev_db_get_device(&udev_parent) == 0) {
+ strfieldcatmax(string, udev_parent.name, maxsize);
+ dbg("substitute parent node name'%s'", udev_parent.name);
+ } else
+ dbg("parent not found in database");
+ }
+ break;
+ case 'N':
+ if (udev->tmp_node[0] == '\0') {
+ dbg("create temporary device node for callout");
+ snprintf(udev->tmp_node, NAME_SIZE, "%s/.tmp-%u-%u", udev_root, major(udev->devt), minor(udev->devt));
+ udev->tmp_node[NAME_SIZE] = '\0';
+ udev_make_node(udev, udev->tmp_node, udev->devt, 0600, 0, 0);
+ }
+ strfieldcatmax(string, udev->tmp_node, maxsize);
+ dbg("substitute temporary device node name '%s'", udev->tmp_node);
+ break;
+ case 'r':
+ strfieldcatmax(string, udev_root, maxsize);
+ dbg("substitute udev_root '%s'", udev_root);
+ break;
default:
dbg("unknown substitution type '%%%c'", c);
break;
static int match_place(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
{
char path[SYSFS_PATH_MAX];
- int found;
- char *temp = NULL;
+ char *temp;
/* we have to have a sysfs device for PLACE to work */
if (!sysfs_device)
return -ENODEV;
- found = 0;
strfieldcpy(path, sysfs_device->path);
temp = strrchr(path, '/');
dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
- if (strstr(temp, dev->place) != NULL) {
- found = 1;
- } else {
- *temp = 0x00;
- temp = strrchr(path, '/');
- dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
- if (strstr(temp, dev->place) != NULL)
- found = 1;
- }
- if (!found) {
- dbg("place doesn't match");
- return -ENODEV;
- }
+ if (strstr(temp, dev->place) != NULL)
+ return 0;
- return 0;
+ /* try the parent */
+ temp[0] = '\0';
+ temp = strrchr(path, '/');
+ dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
+ if (strstr(temp, dev->place) == NULL)
+ return 0;
+
+ dbg("place doesn't match");
+ return -ENODEV;
}
-static int match_rule(struct config_device *dev, struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+static int match_rule(struct udevice *udev, struct config_device *dev,
+ struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
{
+ /* check for matching kernel name */
+ if (dev->kernel[0] != '\0') {
+ dbg("check for " FIELD_KERNEL " dev->kernel='%s' class_dev->name='%s'",
+ dev->kernel, class_dev->name);
+ if (strcmp_pattern(dev->kernel, class_dev->name) != 0) {
+ dbg(FIELD_KERNEL " is not matching");
+ goto exit;
+ }
+ dbg(FIELD_KERNEL " matches");
+ }
+
+ /* check for matching subsystem */
+ if (dev->subsystem[0] != '\0') {
+ dbg("check for " FIELD_SUBSYSTEM " dev->subsystem='%s' class_dev->name='%s'",
+ dev->subsystem, class_dev->name);
+ if (strcmp_pattern(dev->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 (dev->driver[0] != '\0') {
+ dbg("check for " FIELD_DRIVER " dev->driver='%s' sysfs_device->driver_name='%s'",
+ dev->driver, sysfs_device->driver_name);
+ if (strcmp_pattern(dev->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 (dev->bus[0] != '\0') {
if (sysfs_device == NULL) {
dbg("device has no bus");
goto try_parent;
}
- dbg("check for " FIELD_BUS " dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+ dbg("check for " FIELD_BUS " dev->bus='%s' sysfs_device->bus='%s'",
+ dev->bus, sysfs_device->bus);
if (strcmp_pattern(dev->bus, sysfs_device->bus) != 0) {
dbg(FIELD_BUS " is not matching");
goto try_parent;
- } else {
- dbg(FIELD_BUS " matches");
- }
- }
-
- /* check for matching kernel name */
- if (dev->kernel[0] != '\0') {
- dbg("check for " FIELD_KERNEL " dev->kernel='%s' class_dev->name='%s'", dev->kernel, class_dev->name);
- if (strcmp_pattern(dev->kernel, class_dev->name) != 0) {
- dbg(FIELD_KERNEL " is not matching");
- goto try_parent;
- } else {
- dbg(FIELD_KERNEL " matches");
- }
- }
-
- /* check for matching subsystem */
- if (dev->subsystem[0] != '\0') {
- dbg("check for " FIELD_SUBSYSTEM " dev->subsystem='%s' class_dev->name='%s'", dev->subsystem, class_dev->name);
- if (strcmp_pattern(dev->subsystem, udev->subsystem) != 0) {
- dbg(FIELD_SUBSYSTEM " is not matching");
- goto try_parent;
- } else {
- dbg(FIELD_SUBSYSTEM " matches");
- }
- }
-
- /* check for matching driver */
- if (dev->driver[0] != '\0') {
- dbg("check for " FIELD_DRIVER " dev->driver='%s' sysfs_device->driver_name='%s'", dev->driver, sysfs_device->driver_name);
- if (strcmp_pattern(dev->driver, sysfs_device->driver_name) != 0) {
- dbg(FIELD_DRIVER " is not matching");
- goto try_parent;
- } else {
- dbg(FIELD_DRIVER " matches");
}
+ dbg(FIELD_BUS " matches");
}
/* check for matching bus id */
if (match_id(dev, class_dev, sysfs_device) != 0) {
dbg(FIELD_ID " is not matching");
goto try_parent;
- } else {
- dbg(FIELD_ID " matches");
}
+ dbg(FIELD_ID " matches");
}
/* check for matching place of device */
if (match_place(dev, class_dev, sysfs_device) != 0) {
dbg(FIELD_PLACE " is not matching");
goto try_parent;
- } else {
- dbg(FIELD_PLACE " matches");
}
+ dbg(FIELD_PLACE " matches");
}
/* check for matching sysfs pairs */
if (match_sysfs_pairs(dev, class_dev, sysfs_device) != 0) {
dbg(FIELD_SYSFS " is not matching");
goto try_parent;
- } else {
- dbg(FIELD_SYSFS " matches");
- }
- }
-
- /* execute external program */
- if (dev->program[0] != '\0') {
- char program[PROGRAM_SIZE];
-
- dbg("check " FIELD_PROGRAM);
- strfieldcpy(program, dev->program);
- apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
- if (execute_program(udev, program, udev->program_result, NAME_SIZE) != 0) {
- dbg(FIELD_PROGRAM " returned nonzero");
- goto try_parent;
- } else {
- dbg(FIELD_PROGRAM " returned successful");
- }
- }
-
- /* check for matching result of external program */
- if (dev->result[0] != '\0') {
- dbg("check for " FIELD_RESULT
- " dev->result='%s', udev->program_result='%s'",
- dev->result, udev->program_result);
- if (strcmp_pattern(dev->result, udev->program_result) != 0) {
- dbg(FIELD_RESULT " is not matching");
- goto try_parent;
- } else {
- dbg(FIELD_RESULT " matches");
}
+ dbg(FIELD_SYSFS " matches");
}
- /* Yeah, we matched! */
- return 0;
-
+ /* found matching physical device */
+ break;
try_parent:
dbg("try parent sysfs device");
sysfs_device = sysfs_get_device_parent(sysfs_device);
if (sysfs_device == NULL)
- return -ENODEV;
+ goto exit;
dbg("sysfs_device->path='%s'", sysfs_device->path);
dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
- dbg("sysfs_device->bus='%s'", sysfs_device->bus);
}
+ /* execute external program */
+ if (dev->program[0] != '\0') {
+ char program[PROGRAM_SIZE];
+
+ dbg("check " FIELD_PROGRAM);
+ strfieldcpy(program, dev->program);
+ apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
+ if (execute_program(udev, program, udev->program_result, NAME_SIZE) != 0) {
+ dbg(FIELD_PROGRAM " returned nonzero");
+ goto try_parent;
+ }
+ dbg(FIELD_PROGRAM " returned successful");
+ }
+
+ /* check for matching result of external program */
+ if (dev->result[0] != '\0') {
+ dbg("check for " FIELD_RESULT " dev->result='%s', udev->program_result='%s'",
+ dev->result, udev->program_result);
+ if (strcmp_pattern(dev->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 namedev_name_device(struct udevice *udev, struct sysfs_class_device *class_dev)
struct sysfs_class_device *class_dev_parent;
struct sysfs_device *sysfs_device = NULL;
struct config_device *dev;
- struct perm_device *perm;
- struct sysinfo info;
char *pos;
- udev->mode = 0;
dbg("class_dev->name='%s'", class_dev->name);
/* Figure out where the "device"-symlink is at. For char devices this will
dbg("found devices device: path='%s', bus_id='%s', bus='%s'",
sysfs_device->path, sysfs_device->bus_id, sysfs_device->bus);
strfieldcpy(udev->bus_id, sysfs_device->bus_id);
- strfieldcpy(udev->bus, sysfs_device->bus);
}
strfieldcpy(udev->kernel_name, class_dev->name);
/* look for a matching rule to apply */
list_for_each_entry(dev, &config_device_list, node) {
dbg("process rule");
- if (match_rule(dev, class_dev, udev, sysfs_device) == 0) {
- if (dev->name[0] == '\0' && dev->symlink[0] == '\0') {
- info("configured rule in '%s' at line %i applied, '%s' is ignored",
+ if (match_rule(udev, dev, class_dev, sysfs_device) == 0) {
+
+ /* FIXME: remove old style ignore rule and make OPTION="ignore" mandatory */
+ if (dev->name[0] == '\0' && dev->symlink[0] == '\0' &&
+ dev->mode == 0000 && dev->owner[0] == '\0' && dev->group[0] == '\0' &&
+ !dev->ignore_device && !dev->partitions && !dev->ignore_remove) {
+ info("configured rule in '%s[%i]' applied, '%s' is ignored",
dev->config_file, dev->config_line, udev->kernel_name);
return -1;
}
+ /* apply options */
+ if (dev->ignore_device) {
+ info("configured rule in '%s[%i]' applied, '%s' is ignored",
+ dev->config_file, dev->config_line, udev->kernel_name);
+ return -1;
+ }
+ if (dev->ignore_remove) {
+ udev->ignore_remove = dev->ignore_remove;
+ dbg_parse("remove event should be ignored");
+ }
+ /* apply all_partitions option only at a main block device */
+ if (dev->partitions && udev->type == BLOCK && udev->kernel_number[0] == '\0') {
+ udev->partitions = dev->partitions;
+ dbg("creation of partition nodes requested");
+ }
+
+ /* apply permissions */
+ if (dev->mode != 0000) {
+ udev->mode = dev->mode;
+ dbg("applied mode=%#o to '%s'", udev->mode, udev->kernel_name);
+ }
+ if (dev->owner[0] != '\0') {
+ strfieldcpy(udev->owner, dev->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 (dev->group[0] != '\0') {
+ strfieldcpy(udev->group, dev->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 for this or the final matching rule */
if (dev->symlink[0] != '\0') {
char temp[NAME_SIZE];
- info("configured rule in '%s' at line %i applied, added symlink '%s'",
+ info("configured rule in '%s[%i]' applied, added symlink '%s'",
dev->config_file, dev->config_line, dev->symlink);
strfieldcpy(temp, dev->symlink);
apply_format(udev, temp, sizeof(temp), class_dev, sysfs_device);
strfieldcat(udev->symlink, temp);
}
+ /* rule matches */
if (dev->name[0] != '\0') {
- /* apply all_partitions flag only at a main block device */
- if (dev->partitions > 0 &&
- (udev->type != 'b' || udev->kernel_number[0] != '\0'))
- continue;
-
- info("configured rule in '%s' at line %i applied, '%s' becomes '%s'",
+ info("configured rule in '%s[%i]' applied, '%s' becomes '%s'",
dev->config_file, dev->config_line, udev->kernel_name, dev->name);
+
strfieldcpy(udev->name, dev->name);
- goto found;
+ apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
+ strfieldcpy(udev->config_file, dev->config_file);
+ udev->config_line = dev->config_line;
+
+ if (udev->type != 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);
+
+ goto exit;
}
}
}
- /* no rule was found so we use the kernel name */
- strfieldcpy(udev->name, udev->kernel_name);
- if (udev->type == 'n')
- goto done;
- else
- goto perms;
-
-found:
- apply_format(udev, udev->name, sizeof(udev->name), class_dev, sysfs_device);
- strfieldcpy(udev->config_file, dev->config_file);
- udev->config_line = dev->config_line;
-
- if (udev->type == 'n')
- goto done;
-
- udev->partitions = dev->partitions;
- udev->ignore_remove = dev->ignore_remove;
- if (dev->group[0] != '\0') {
- strfieldcpy(udev->group, dev->group);
- apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
- }
+ /* no rule matched, so we use the kernel name */
+ strfieldcpy(udev->name, udev->kernel_name);
+ dbg("no rule found, use kernel name '%s'", udev->name);
- /* get permissions given in rule */
- set_empty_perms(udev, dev->mode,
- dev->owner,
- dev->group);
-
-perms:
- /* get permissions given in config file or set defaults */
- perm = find_perm(udev->name);
- if (perm != NULL) {
- set_empty_perms(udev, perm->mode,
- perm->owner,
- perm->group);
+exit:
+ if (udev->tmp_node[0] != '\0') {
+ dbg("removing temporary device node");
+ unlink_secure(udev->tmp_node);
+ udev->tmp_node[0] = '\0';
}
- set_empty_perms(udev, get_default_mode(),
- get_default_owner(),
- get_default_group());
-
- dbg("name, '%s' is going to have owner='%s', group='%s', mode = %#o",
- udev->name, udev->owner, udev->group, udev->mode);
-
-done:
- /* store time of action */
- sysinfo(&info);
- udev->config_uptime = info.uptime;
return 0;
}
-
-int namedev_init(void)
-{
- int retval;
-
- retval = namedev_init_rules();
- if (retval)
- return retval;
-
- retval = namedev_init_permissions();
- if (retval)
- return retval;
-
- dump_config_dev_list();
- dump_perm_dev_list();
- return retval;
-}
~ianmdlvl / elogind.git / blobdiff