mirror of
https://github.com/AuxXxilium/eudev.git
synced 2024-12-28 06:35:34 +07:00
[PATCH] remove unneeded file from libsysfs
This commit is contained in:
kay.sievers@vrfy.org
Greg KH
parent
2861655484
commit
7e3e23925b
@ -1,400 +0,0 @@
|
||||
/*
|
||||
* sysfs_bus.c
|
||||
*
|
||||
* Generic bus utility functions for libsysfs
|
||||
*
|
||||
* Copyright (C) IBM Corp. 2003
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
*/
|
||||
#include "libsysfs.h"
|
||||
#include "sysfs.h"
|
||||
|
||||
static void sysfs_close_dev(void *dev)
|
||||
{
|
||||
sysfs_close_device((struct sysfs_device *)dev);
|
||||
}
|
||||
|
||||
static void sysfs_close_drv(void *drv)
|
||||
{
|
||||
sysfs_close_driver((struct sysfs_driver *)drv);
|
||||
}
|
||||
|
||||
/*
|
||||
* compares devices' bus ids.
|
||||
* @a: device id looking for
|
||||
* @b: sysfs_device comparing being compared
|
||||
* returns 1 if a==b->bus_id or 0 not equal
|
||||
*/
|
||||
static int bus_device_id_equal(void *a, void *b)
|
||||
{
|
||||
if (a == NULL || b == NULL)
|
||||
return 0;
|
||||
|
||||
if (strcmp(((char *)a), ((struct sysfs_device *)b)->bus_id)
|
||||
== 0)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* compares drivers' names.
|
||||
* @a: driver name looking for
|
||||
* @b: sysfs_driver comparing being compared
|
||||
* returns 1 if a==b->name or 0 not equal
|
||||
*/
|
||||
static int bus_driver_name_equal(void *a, void *b)
|
||||
{
|
||||
if (a == NULL || b == NULL)
|
||||
return 0;
|
||||
|
||||
if (strcmp(((char *)a), ((struct sysfs_driver *)b)->name) == 0)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_close_bus: close single bus
|
||||
* @bus: bus structure
|
||||
*/
|
||||
void sysfs_close_bus(struct sysfs_bus *bus)
|
||||
{
|
||||
if (bus != NULL) {
|
||||
if (bus->directory != NULL)
|
||||
sysfs_close_directory(bus->directory);
|
||||
if (bus->devices)
|
||||
dlist_destroy(bus->devices);
|
||||
if (bus->drivers)
|
||||
dlist_destroy(bus->drivers);
|
||||
free(bus);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* alloc_bus: mallocs new bus structure
|
||||
* returns sysfs_bus_bus struct or NULL
|
||||
*/
|
||||
static struct sysfs_bus *alloc_bus(void)
|
||||
{
|
||||
return (struct sysfs_bus *)calloc(1, sizeof(struct sysfs_bus));
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_get_bus_devices: gets all devices for bus
|
||||
* @bus: bus to get devices for
|
||||
* returns dlist of devices with success and NULL with failure
|
||||
*/
|
||||
struct dlist *sysfs_get_bus_devices(struct sysfs_bus *bus)
|
||||
{
|
||||
struct sysfs_device *bdev = NULL;
|
||||
struct sysfs_directory *devdir = NULL;
|
||||
struct sysfs_link *curl = NULL;
|
||||
char path[SYSFS_PATH_MAX];
|
||||
|
||||
if (bus == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
memset(path, 0, SYSFS_PATH_MAX);
|
||||
safestrcpy(path, bus->path);
|
||||
safestrcat(path, "/");
|
||||
safestrcat(path, SYSFS_DEVICES_NAME);
|
||||
devdir = sysfs_open_directory(path);
|
||||
if (devdir == NULL)
|
||||
return NULL;
|
||||
|
||||
if (sysfs_read_dir_links(devdir) != 0) {
|
||||
sysfs_close_directory(devdir);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (devdir->links != NULL) {
|
||||
dlist_for_each_data(devdir->links, curl, struct sysfs_link) {
|
||||
bdev = sysfs_open_device_path(curl->target);
|
||||
if (bdev == NULL) {
|
||||
dprintf("Error opening device at %s\n",
|
||||
curl->target);
|
||||
continue;
|
||||
}
|
||||
if (bus->devices == NULL)
|
||||
bus->devices = dlist_new_with_delete
|
||||
(sizeof(struct sysfs_device),
|
||||
sysfs_close_dev);
|
||||
dlist_unshift_sorted(bus->devices, bdev, sort_list);
|
||||
}
|
||||
}
|
||||
sysfs_close_directory(devdir);
|
||||
|
||||
return (bus->devices);
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_get_bus_drivers: get all pci drivers
|
||||
* @bus: pci bus to add drivers to
|
||||
* returns dlist of drivers with success and NULL with error
|
||||
*/
|
||||
struct dlist *sysfs_get_bus_drivers(struct sysfs_bus *bus)
|
||||
{
|
||||
struct sysfs_driver *driver = NULL;
|
||||
struct sysfs_directory *drvdir = NULL;
|
||||
struct sysfs_directory *cursub = NULL;
|
||||
char path[SYSFS_PATH_MAX];
|
||||
|
||||
if (bus == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
memset(path, 0, SYSFS_PATH_MAX);
|
||||
safestrcpy(path, bus->path);
|
||||
safestrcat(path, "/");
|
||||
safestrcat(path, SYSFS_DRIVERS_NAME);
|
||||
drvdir = sysfs_open_directory(path);
|
||||
if (drvdir == NULL)
|
||||
return NULL;
|
||||
|
||||
if (sysfs_read_dir_subdirs(drvdir) != 0) {
|
||||
sysfs_close_directory(drvdir);
|
||||
return NULL;
|
||||
}
|
||||
if (drvdir->subdirs != NULL) {
|
||||
dlist_for_each_data(drvdir->subdirs, cursub,
|
||||
struct sysfs_directory) {
|
||||
driver = sysfs_open_driver_path(cursub->path);
|
||||
if (driver == NULL) {
|
||||
dprintf("Error opening driver at %s\n",
|
||||
cursub->path);
|
||||
continue;
|
||||
}
|
||||
if (bus->drivers == NULL)
|
||||
bus->drivers = dlist_new_with_delete
|
||||
(sizeof(struct sysfs_driver),
|
||||
sysfs_close_drv);
|
||||
dlist_unshift_sorted(bus->drivers, driver, sort_list);
|
||||
}
|
||||
}
|
||||
sysfs_close_directory(drvdir);
|
||||
return (bus->drivers);
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_open_bus: opens specific bus and all its devices on system
|
||||
* returns sysfs_bus structure with success or NULL with error.
|
||||
*/
|
||||
struct sysfs_bus *sysfs_open_bus(const char *name)
|
||||
{
|
||||
struct sysfs_bus *bus = NULL;
|
||||
char buspath[SYSFS_PATH_MAX];
|
||||
|
||||
if (name == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
memset(buspath, 0, SYSFS_PATH_MAX);
|
||||
if ((sysfs_get_mnt_path(buspath, SYSFS_PATH_MAX)) != 0) {
|
||||
dprintf("Sysfs not supported on this system\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
safestrcat(buspath, "/");
|
||||
safestrcat(buspath, SYSFS_BUS_NAME);
|
||||
safestrcat(buspath, "/");
|
||||
safestrcat(buspath, name);
|
||||
if ((sysfs_path_is_dir(buspath)) != 0) {
|
||||
dprintf("Invalid path to bus: %s\n", buspath);
|
||||
return NULL;
|
||||
}
|
||||
bus = alloc_bus();
|
||||
if (bus == NULL) {
|
||||
dprintf("calloc failed\n");
|
||||
return NULL;
|
||||
}
|
||||
safestrcpy(bus->name, name);
|
||||
safestrcpy(bus->path, buspath);
|
||||
if ((sysfs_remove_trailing_slash(bus->path)) != 0) {
|
||||
dprintf("Incorrect path to bus %s\n", bus->path);
|
||||
sysfs_close_bus(bus);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return bus;
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_get_bus_device: Get specific device on bus using device's id
|
||||
* @bus: bus to find device on
|
||||
* @id: bus_id for device
|
||||
* returns struct sysfs_device reference or NULL if not found.
|
||||
*/
|
||||
struct sysfs_device *sysfs_get_bus_device(struct sysfs_bus *bus, char *id)
|
||||
{
|
||||
if (bus == NULL || id == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (bus->devices == NULL) {
|
||||
bus->devices = sysfs_get_bus_devices(bus);
|
||||
if (bus->devices == NULL)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return (struct sysfs_device *)dlist_find_custom(bus->devices, id,
|
||||
bus_device_id_equal);
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_get_bus_driver: Get specific driver on bus using driver name
|
||||
* @bus: bus to find driver on
|
||||
* @drvname: name of driver
|
||||
* returns struct sysfs_driver reference or NULL if not found.
|
||||
*/
|
||||
struct sysfs_driver *sysfs_get_bus_driver(struct sysfs_bus *bus,
|
||||
char *drvname)
|
||||
{
|
||||
if (bus == NULL || drvname == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (bus->drivers == NULL) {
|
||||
bus->drivers = sysfs_get_bus_drivers(bus);
|
||||
if (bus->drivers == NULL)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return (struct sysfs_driver *)dlist_find_custom(bus->drivers, drvname,
|
||||
bus_driver_name_equal);
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_get_bus_attributes: returns bus' dlist of attributes
|
||||
* @bus: bus to get attributes for.
|
||||
* returns dlist of attributes or NULL if there aren't any.
|
||||
*/
|
||||
struct dlist *sysfs_get_bus_attributes(struct sysfs_bus *bus)
|
||||
{
|
||||
if (bus == NULL)
|
||||
return NULL;
|
||||
|
||||
if (bus->directory == NULL) {
|
||||
bus->directory = sysfs_open_directory(bus->path);
|
||||
if (bus->directory == NULL)
|
||||
return NULL;
|
||||
}
|
||||
if (bus->directory->attributes == NULL) {
|
||||
if ((sysfs_read_dir_attributes(bus->directory)) != 0)
|
||||
return NULL;
|
||||
}
|
||||
return bus->directory->attributes;
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_refresh_bus_attributes: refreshes the bus's list of attributes
|
||||
* @bus: sysfs_bus whose attributes to refresh
|
||||
*
|
||||
* NOTE: Upon return, prior references to sysfs_attributes for this bus
|
||||
* _may_ not be valid
|
||||
*
|
||||
* Returns list of attributes on success and NULL on failure
|
||||
*/
|
||||
struct dlist *sysfs_refresh_bus_attributes(struct sysfs_bus *bus)
|
||||
{
|
||||
if (bus == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (bus->directory == NULL)
|
||||
return (sysfs_get_bus_attributes(bus));
|
||||
|
||||
if ((sysfs_refresh_dir_attributes(bus->directory)) != 0) {
|
||||
dprintf("Error refreshing bus attributes\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return (bus->directory->attributes);
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_get_bus_attribute: gets a specific bus attribute, if buses had
|
||||
* attributes.
|
||||
* @bus: bus to retrieve attribute from
|
||||
* @attrname: attribute name to retrieve
|
||||
* returns reference to sysfs_attribute if found or NULL if not found
|
||||
*/
|
||||
struct sysfs_attribute *sysfs_get_bus_attribute(struct sysfs_bus *bus,
|
||||
char *attrname)
|
||||
{
|
||||
struct dlist *attrlist = NULL;
|
||||
|
||||
if (bus == NULL) {
|
||||
errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
attrlist = sysfs_get_bus_attributes(bus);
|
||||
if (attrlist == NULL)
|
||||
return NULL;
|
||||
|
||||
return sysfs_get_directory_attribute(bus->directory, attrname);
|
||||
}
|
||||
|
||||
/**
|
||||
* sysfs_find_driver_bus: locates the bus the driver is on.
|
||||
* @driver: name of the driver to locate
|
||||
* @busname: buffer to copy name to
|
||||
* @bsize: buffer size
|
||||
* returns 0 with success, -1 with error
|
||||
*/
|
||||
int sysfs_find_driver_bus(const char *driver, char *busname, size_t bsize)
|
||||
{
|
||||
char subsys[SYSFS_PATH_MAX], *bus = NULL, *curdrv = NULL;
|
||||
struct dlist *buslist = NULL, *drivers = NULL;
|
||||
|
||||
if (driver == NULL || busname == NULL) {
|
||||
errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
memset(subsys, 0, SYSFS_PATH_MAX);
|
||||
safestrcpy(subsys, SYSFS_BUS_NAME);
|
||||
buslist = sysfs_open_subsystem_list(subsys);
|
||||
if (buslist != NULL) {
|
||||
dlist_for_each_data(buslist, bus, char) {
|
||||
memset(subsys, 0, SYSFS_PATH_MAX);
|
||||
safestrcpy(subsys, SYSFS_BUS_NAME);
|
||||
safestrcat(subsys, "/");
|
||||
safestrcat(subsys, bus);
|
||||
safestrcat(subsys, "/");
|
||||
safestrcat(subsys, SYSFS_DRIVERS_NAME);
|
||||
drivers = sysfs_open_subsystem_list(subsys);
|
||||
if (drivers != NULL) {
|
||||
dlist_for_each_data(drivers, curdrv, char) {
|
||||
if (strcmp(driver, curdrv) == 0) {
|
||||
safestrcpymax(busname,
|
||||
bus, bsize);
|
||||
sysfs_close_list(drivers);
|
||||
sysfs_close_list(buslist);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
sysfs_close_list(drivers);
|
||||
}
|
||||
}
|
||||
sysfs_close_list(buslist);
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user