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cb08e0f253
systemd-stable/namedev.c
kay.sievers@vrfy.org cb08e0f253 [PATCH] namedev.c - change order of fields in CALLOUT 
I want to bring the CALLOUT field ordering in line with the other
methods, cause the current parsing relies on the ordering it's good
to have it like the others. The BUS= is now the first expected field.

Also made the last two remaining field names to uppercase and the man page
callout example is updated.
2005-04-26 21:06:25 -07:00

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/*
* namedev.c
*
* Userspace devfs
*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
*
*
* 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.
*
*/
/* define this to enable parsing debugging */
/* #define DEBUG_PARSER */
#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 "list.h"
#include "udev.h"
#include "udev_version.h"
#include "namedev.h"
#include "libsysfs/libsysfs.h"
#define TYPE_LABEL "LABEL"
#define TYPE_NUMBER "NUMBER"
#define TYPE_TOPOLOGY "TOPOLOGY"
#define TYPE_REPLACE "REPLACE"
#define TYPE_CALLOUT "CALLOUT"
static LIST_HEAD(config_device_list);
static void dump_dev(struct config_device *dev)
{
switch (dev->type) {
case KERNEL_NAME:
dbg_parse("KERNEL name='%s' ,"
"owner='%s', group='%s', mode=%#o",
dev->name, dev->owner, dev->group, dev->mode);
break;
case LABEL:
dbg_parse("LABEL name='%s', bus='%s', sysfs_file='%s', sysfs_value='%s', "
"owner='%s', group='%s', mode=%#o",
dev->name, dev->bus, dev->sysfs_file, dev->sysfs_value,
dev->owner, dev->group, dev->mode);
break;
case NUMBER:
dbg_parse("NUMBER name='%s', bus='%s', id='%s', "
"owner='%s', group='%s', mode=%#o",
dev->name, dev->bus, dev->id,
dev->owner, dev->group, dev->mode);
break;
case TOPOLOGY:
dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s', "
"owner='%s', group='%s', mode=%#o",
dev->name, dev->bus, dev->place,
dev->owner, dev->group, dev->mode);
break;
case REPLACE:
dbg_parse("REPLACE name=%s, kernel_name=%s, "
"owner='%s', group='%s', mode=%#o",
dev->name, dev->kernel_name,
dev->owner, dev->group, dev->mode);
break;
case CALLOUT:
dbg_parse("CALLOUT name='%s', program='%s', bus='%s', id='%s', "
"owner='%s', group='%s', mode=%#o",
dev->name, dev->exec_program, dev->bus, dev->id,
dev->owner, dev->group, dev->mode);
break;
default:
dbg_parse("unknown type of method");
}
}
#define copy_var(a, b, var) \
if (b->var) \
a->var = b->var;
#define copy_string(a, b, var) \
if (strlen(b->var)) \
strcpy(a->var, b->var);
static int add_dev(struct config_device *new_dev)
{
struct list_head *tmp;
struct config_device *tmp_dev;
/* update the values if we already have the device */
list_for_each(tmp, &config_device_list) {
struct config_device *dev = list_entry(tmp, struct config_device, node);
int len = strlen(new_dev->name);
if (new_dev->name[len-1] == '*') {
len--;
if (strncmp(dev->name, new_dev->name, len))
continue;
} else {
if (strcmp(dev->name, new_dev->name))
continue;
}
/* the same, copy the new info into this structure */
copy_var(dev, new_dev, type);
copy_var(dev, new_dev, mode);
copy_string(dev, new_dev, bus);
copy_string(dev, new_dev, sysfs_file);
copy_string(dev, new_dev, sysfs_value);
copy_string(dev, new_dev, id);
copy_string(dev, new_dev, place);
copy_string(dev, new_dev, kernel_name);
copy_string(dev, new_dev, owner);
copy_string(dev, new_dev, group);
return 0;
}
/* not found, add new structure to the device list */
tmp_dev = malloc(sizeof(*tmp_dev));
if (!tmp_dev)
return -ENOMEM;
memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
list_add(&tmp_dev->node, &config_device_list);
//dump_dev(tmp_dev);
return 0;
}
static void dump_dev_list(void)
{
struct list_head *tmp;
list_for_each(tmp, &config_device_list) {
struct config_device *dev = list_entry(tmp, struct config_device, node);
dump_dev(dev);
}
}
static int get_pair(char **orig_string, char **left, char **right)
{
char *temp;
char *string = *orig_string;
if (!string)
return -ENODEV;
/* eat any whitespace */
while (isspace(*string))
++string;
/* split based on '=' */
temp = strsep(&string, "=");
*left = temp;
if (!string)
return -ENODEV;
/* take the right side and strip off the '"' */
while (isspace(*string))
++string;
if (*string == '"')
++string;
else
return -ENODEV;
temp = strsep(&string, "\"");
if (!string || *temp == '\0')
return -ENODEV;
*right = temp;
*orig_string = string;
return 0;
}
static int get_value(const char *left, char **orig_string, char **ret_string)
{
int retval;
char *left_string;
retval = get_pair(orig_string, &left_string, ret_string);
if (retval)
return retval;
if (strcasecmp(left_string, left) != 0)
return -ENODEV;
return 0;
}
static int namedev_init_config(void)
{
char line[255];
int lineno;
char *temp;
char *temp2;
char *temp3;
FILE *fd;
int retval = 0;
struct config_device dev;
dbg("opening %s to read as config", udev_config_filename);
fd = fopen(udev_config_filename, "r");
if (fd == NULL) {
dbg("can't open %s", udev_config_filename);
return -ENODEV;
}
/* loop through the whole file */
lineno = 0;
while (1) {
/* get a line */
temp = fgets(line, sizeof(line), fd);
if (temp == NULL)
goto exit;
lineno++;
dbg_parse("read %s", temp);
/* eat the whitespace at the beginning of the line */
while (isspace(*temp))
++temp;
/* empty line? */
if (*temp == 0x00)
continue;
/* see if this is a comment */
if (*temp == COMMENT_CHARACTER)
continue;
memset(&dev, 0x00, sizeof(struct config_device));
/* parse the line */
temp2 = strsep(&temp, ",");
if (strcasecmp(temp2, TYPE_LABEL) == 0) {
/* label type */
dev.type = LABEL;
/* BUS="bus" */
retval = get_value("BUS", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.bus, temp3);
/* file="value" */
temp2 = strsep(&temp, ",");
retval = get_pair(&temp, &temp2, &temp3);
if (retval)
break;
strfieldcpy(dev.sysfs_file, temp2);
strfieldcpy(dev.sysfs_value, temp3);
/* NAME="new_name" */
temp2 = strsep(&temp, ",");
retval = get_value("NAME", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.name, temp3);
dbg_parse("LABEL name='%s', bus='%s', "
"sysfs_file='%s', sysfs_value='%s'",
dev.name, dev.bus, dev.sysfs_file,
dev.sysfs_value);
}
if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
/* number type */
dev.type = NUMBER;
/* BUS="bus" */
retval = get_value("BUS", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.bus, temp3);
/* ID="id" */
temp2 = strsep(&temp, ",");
retval = get_value("ID", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.id, temp3);
/* NAME="new_name" */
temp2 = strsep(&temp, ",");
retval = get_value("NAME", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.name, temp3);
dbg_parse("NUMBER name='%s', bus='%s', id='%s'",
dev.name, dev.bus, dev.id);
}
if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
/* number type */
dev.type = TOPOLOGY;
/* BUS="bus" */
retval = get_value("BUS", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.bus, temp3);
/* PLACE="place" */
temp2 = strsep(&temp, ",");
retval = get_value("PLACE", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.place, temp3);
/* NAME="new_name" */
temp2 = strsep(&temp, ",");
retval = get_value("NAME", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.name, temp3);
dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s'",
dev.name, dev.bus, dev.place);
}
if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
/* number type */
dev.type = REPLACE;
/* KERNEL="kernel_name" */
retval = get_value("KERNEL", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.kernel_name, temp3);
/* NAME="new_name" */
temp2 = strsep(&temp, ",");
retval = get_value("NAME", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.name, temp3);
dbg_parse("REPLACE name='%s', kernel_name='%s'",
dev.name, dev.kernel_name);
}
if (strcasecmp(temp2, TYPE_CALLOUT) == 0) {
/* number type */
dev.type = CALLOUT;
/* BUS="bus" */
retval = get_value("BUS", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.bus, temp3);
/* PROGRAM="executable" */
temp2 = strsep(&temp, ",");
retval = get_value("PROGRAM", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.exec_program, temp3);
/* ID="id" */
temp2 = strsep(&temp, ",");
retval = get_value("ID", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.id, temp3);
/* NAME="new_name" */
temp2 = strsep(&temp, ",");
retval = get_value("NAME", &temp, &temp3);
if (retval)
break;
strfieldcpy(dev.name, temp3);
dbg_parse("CALLOUT name='%s', program='%s'",
dev.name, dev.exec_program);
}
retval = add_dev(&dev);
if (retval) {
dbg("add_dev returned with error %d", retval);
goto exit;
}
}
dbg_parse("%s:%d:%Zd: error parsing '%s'", udev_config_filename,
lineno, temp - line, temp);
exit:
fclose(fd);
return retval;
}
static int namedev_init_permissions(void)
{
char line[255];
char *temp;
char *temp2;
FILE *fd;
int retval = 0;
struct config_device dev;
dbg("opening %s to read as permissions config", udev_config_permission_filename);
fd = fopen(udev_config_permission_filename, "r");
if (fd == NULL) {
dbg("can't open %s", udev_config_permission_filename);
return -ENODEV;
}
/* loop through the whole file */
while (1) {
/* get a line */
temp = fgets(line, sizeof(line), fd);
if (temp == NULL)
break;
dbg_parse("read %s", temp);
/* eat the whitespace at the beginning of the line */
while (isspace(*temp))
++temp;
/* empty line? */
if (*temp == 0x00)
continue;
/* see if this is a comment */
if (*temp == COMMENT_CHARACTER)
continue;
memset(&dev, 0x00, sizeof(dev));
/* parse the line */
temp2 = strsep(&temp, ":");
strncpy(dev.name, temp2, sizeof(dev.name));
temp2 = strsep(&temp, ":");
strncpy(dev.owner, temp2, sizeof(dev.owner));
temp2 = strsep(&temp, ":");
strncpy(dev.group, temp2, sizeof(dev.owner));
dev.mode = strtol(temp, NULL, 8);
dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
dev.name, dev.owner, dev.group,
dev.mode);
retval = add_dev(&dev);
if (retval) {
dbg("add_dev returned with error %d", retval);
goto exit;
}
}
exit:
fclose(fd);
return retval;
}
static mode_t get_default_mode(struct sysfs_class_device *class_dev)
{
/* just default everyone to rw for the world! */
return 0666;
}
static int exec_callout(struct config_device *dev, char *value, int len)
{
int retval;
int res;
int status;
int fds[2];
pid_t pid;
int value_set = 0;
char buffer[256];
dbg("callout to '%s'", dev->exec_program);
retval = pipe(fds);
if (retval != 0) {
dbg("pipe failed");
return -1;
}
pid = fork();
if (pid == -1) {
dbg("fork failed");
return -1;
}
if (pid == 0) {
/* child */
close(STDOUT_FILENO);
dup(fds[1]); /* dup write side of pipe to STDOUT */
retval = execve(dev->exec_program, main_argv, main_envp);
if (retval != 0) {
dbg("child execve failed");
exit(1);
}
return -1; /* avoid compiler warning */
} else {
/* parent reads from fds[0] */
close(fds[1]);
retval = 0;
while (1) {
res = read(fds[0], buffer, sizeof(buffer) - 1);
if (res <= 0)
break;
buffer[res] = '\0';
if (res > len) {
dbg("callout len %d too short\n", len);
retval = -1;
}
if (value_set) {
dbg("callout value already set");
retval = -1;
} else {
value_set = 1;
strncpy(value, buffer, len);
}
}
close(fds[0]);
res = wait(&status);
if (res < 0) {
dbg("wait failed result %d", res);
retval = -1;
}
#ifndef __KLIBC__
if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
dbg("callout program status 0x%x", status);
retval = -1;
}
#endif
}
return retval;
}
static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev)
{
struct config_device *dev;
struct list_head *tmp;
char value[ID_SIZE];
list_for_each(tmp, &config_device_list) {
dev = list_entry(tmp, struct config_device, node);
if (dev->type != CALLOUT)
continue;
if (exec_callout(dev, value, sizeof(value)))
continue;
if (strncmp(value, dev->id, sizeof(value)) != 0)
continue;
strfieldcpy(udev->name, dev->name);
if (dev->mode != 0) {
udev->mode = dev->mode;
strfieldcpy(udev->owner, dev->owner);
strfieldcpy(udev->group, dev->group);
}
dbg_parse("callout returned matching value '%s', '%s' becomes '%s'"
" - owner='%s', group='%s', mode =%#o",
dev->id, class_dev->name, udev->name,
dev->owner, dev->group, dev->mode);
return 0;
}
return -ENODEV;
}
static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
{
struct sysfs_attribute *tmpattr = NULL;
struct config_device *dev;
struct list_head *tmp;
list_for_each(tmp, &config_device_list) {
dev = list_entry(tmp, struct config_device, node);
if (dev->type != LABEL)
continue;
dbg_parse("look for device attribute '%s'", dev->sysfs_file);
/* try to find the attribute in the class device directory */
tmpattr = sysfs_get_classdev_attr(class_dev, dev->sysfs_file);
if (tmpattr)
goto label_found;
/* look in the class device directory if present */
if (sysfs_device) {
tmpattr = sysfs_get_device_attr(sysfs_device, dev->sysfs_file);
if (tmpattr)
goto label_found;
}
continue;
label_found:
tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
dbg_parse("compare attribute '%s' value '%s' with '%s'",
dev->sysfs_file, tmpattr->value, dev->sysfs_value);
if (strcmp(dev->sysfs_value, tmpattr->value) != 0)
continue;
strfieldcpy(udev->name, dev->name);
if (dev->mode != 0) {
udev->mode = dev->mode;
strfieldcpy(udev->owner, dev->owner);
strfieldcpy(udev->group, dev->group);
}
dbg_parse("found matching attribute '%s', '%s' becomes '%s' "
"- owner='%s', group='%s', mode=%#o",
dev->sysfs_file, class_dev->name, udev->name,
dev->owner, dev->group, dev->mode);
return 0;
}
return -ENODEV;
}
static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
{
struct config_device *dev;
struct list_head *tmp;
char path[SYSFS_PATH_MAX];
int found;
char *temp = NULL;
/* we have to have a sysfs device for NUMBER to work */
if (!sysfs_device)
return -ENODEV;
list_for_each(tmp, &config_device_list) {
dev = list_entry(tmp, struct config_device, node);
if (dev->type != NUMBER)
continue;
found = 0;
strfieldcpy(path, sysfs_device->path);
temp = strrchr(path, '/');
dbg_parse("search '%s' in '%s', path='%s'", dev->id, temp, path);
if (strstr(temp, dev->id) != NULL) {
found = 1;
} else {
*temp = 0x00;
temp = strrchr(path, '/');
dbg_parse("search '%s' in '%s', path='%s'", dev->id, temp, path);
if (strstr(temp, dev->id) != NULL)
found = 1;
}
if (!found)
continue;
strfieldcpy(udev->name, dev->name);
if (dev->mode != 0) {
udev->mode = dev->mode;
strfieldcpy(udev->owner, dev->owner);
strfieldcpy(udev->group, dev->group);
}
dbg_parse("found matching id '%s', '%s' becomes '%s'"
" - owner='%s', group ='%s', mode=%#o",
dev->id, class_dev->name, udev->name,
dev->owner, dev->group, dev->mode);
return 0;
}
return -ENODEV;
}
static int do_topology(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
{
struct config_device *dev;
struct list_head *tmp;
char path[SYSFS_PATH_MAX];
int found;
char *temp = NULL;
/* we have to have a sysfs device for TOPOLOGY to work */
if (!sysfs_device)
return -ENODEV;
list_for_each(tmp, &config_device_list) {
dev = list_entry(tmp, struct config_device, node);
if (dev->type != TOPOLOGY)
continue;
found = 0;
strfieldcpy(path, sysfs_device->path);
temp = strrchr(path, '/');
dbg_parse("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_parse("search '%s' in '%s', path='%s'", dev->place, temp, path);
if (strstr(temp, dev->place) != NULL)
found = 1;
}
if (!found)
continue;
strfieldcpy(udev->name, dev->name);
if (dev->mode != 0) {
udev->mode = dev->mode;
strfieldcpy(udev->owner, dev->owner);
strfieldcpy(udev->group, dev->group);
}
dbg_parse("found matching place '%s', '%s' becomes '%s'"
" - owner='%s', group ='%s', mode=%#o",
dev->place, class_dev->name, udev->name,
dev->owner, dev->group, dev->mode);
return 0;
}
return -ENODEV;
}
static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev)
{
struct config_device *dev;
struct list_head *tmp;
list_for_each(tmp, &config_device_list) {
dev = list_entry(tmp, struct config_device, node);
if (dev->type != REPLACE)
continue;
dbg_parse("compare name '%s' with '%s'",
dev->kernel_name, dev->name);
if (strcmp(dev->kernel_name, class_dev->name) != 0)
continue;
strfieldcpy(udev->name, dev->name);
if (dev->mode != 0) {
udev->mode = dev->mode;
strfieldcpy(udev->owner, dev->owner);
strfieldcpy(udev->group, dev->group);
}
dbg_parse("found name, '%s' becomes '%s' - owner='%s', group='%s', mode = %#o",
dev->kernel_name, udev->name,
dev->owner, dev->group, dev->mode);
return 0;
}
return -ENODEV;
}
static void do_kernelname(struct sysfs_class_device *class_dev, struct udevice *udev)
{
struct config_device *dev;
struct list_head *tmp;
int len;
strfieldcpy(udev->name, class_dev->name);
list_for_each(tmp, &config_device_list) {
dev = list_entry(tmp, struct config_device, node);
len = strlen(dev->name);
if (dev->name[len-1] == '*') {
len--;
if (strncmp(dev->name, class_dev->name, len))
continue;
} else {
if (strcmp(dev->name, class_dev->name))
continue;
}
if (dev->mode != 0) {
dbg_parse("found permissions for '%s'", class_dev->name);
udev->mode = dev->mode;
strfieldcpy(udev->owner, dev->owner);
strfieldcpy(udev->group, dev->group);
}
}
}
static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
{
struct sysfs_device *sysfs_device = NULL;
struct sysfs_class_device *class_dev_parent = NULL;
int retval = 0;
char *temp = NULL;
udev->mode = 0;
/* find the sysfs_device for this class device */
/* Wouldn't it really be nice if libsysfs could do this for us? */
if (class_dev->sysdevice) {
sysfs_device = class_dev->sysdevice;
} else {
/* bah, let's go backwards up a level to see if the device is there,
* as block partitions don't point to the physical device. Need to fix that
* up in the kernel...
*/
if (strstr(class_dev->path, "block")) {
dbg_parse("looking at block device...");
if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
char path[SYSFS_PATH_MAX];
dbg_parse("really is a partition...");
strfieldcpy(path, class_dev->path);
temp = strrchr(path, '/');
*temp = 0x00;
dbg_parse("looking for a class device at '%s'", path);
class_dev_parent = sysfs_open_class_device(path);
if (class_dev_parent == NULL) {
dbg("sysfs_open_class_device at '%s' failed", path);
} else {
dbg_parse("class_dev_parent->name=%s", class_dev_parent->name);
if (class_dev_parent->sysdevice)
sysfs_device = class_dev_parent->sysdevice;
}
}
}
}
if (sysfs_device) {
dbg_parse("sysfs_device->path='%s'", sysfs_device->path);
dbg_parse("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
} else {
dbg_parse("class_dev->name = '%s'", class_dev->name);
}
/* rules are looked at in priority order */
retval = do_callout(class_dev, udev);
if (retval == 0)
goto found;
retval = do_label(class_dev, udev, sysfs_device);
if (retval == 0)
goto found;
retval = do_number(class_dev, udev, sysfs_device);
if (retval == 0)
goto found;
retval = do_topology(class_dev, udev, sysfs_device);
if (retval == 0)
goto found;
retval = do_replace(class_dev, udev);
if (retval == 0)
goto found;
do_kernelname(class_dev, udev);
goto done;
found:
/* substitute placeholder in NAME */
while (1) {
char *pos = strchr(udev->name, '%');
char *dig;
char name[NAME_SIZE];
if (pos) {
strfieldcpy(name, pos+2);
*pos = 0x00;
switch (pos[1]) {
case 'b':
if (!sysfs_device)
break;
strcat(udev->name, sysfs_device->bus_id);
dbg("bus_id inserted: %s",
sysfs_device->bus_id);
break;
case 'n':
dig = class_dev->name + strlen(class_dev->name);
while (isdigit(*(dig-1)))
dig--;
strcat(udev->name, dig);
dbg("substitute kernel number '%s'", dig);
break;
case 'm':
sprintf(pos, "%u", udev->minor);
dbg("substitute minor number '%u'", udev->minor);
break;
case 'M':
sprintf(pos, "%u", udev->major);
dbg("substitute major number '%u'", udev->major);
break;
default:
dbg("unknown substitution type '%%%c'", pos[1]);
break;
}
strcat(udev->name, name);
} else
break;
}
done:
/* mode was never set above */
if (!udev->mode) {
udev->mode = get_default_mode(class_dev);
udev->owner[0] = 0x00;
udev->group[0] = 0x00;
}
if (class_dev_parent)
sysfs_close_class_device(class_dev_parent);
return 0;
}
int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *dev)
{
int retval;
retval = get_attr(class_dev, dev);
if (retval)
dbg("get_attr failed");
return retval;
}
int namedev_init(void)
{
int retval;
retval = namedev_init_config();
if (retval)
return retval;
retval = namedev_init_permissions();
if (retval)
return retval;
dump_dev_list();
return retval;
}
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