#include <sys/stat.h>
#include <sys/types.h>
#include <grp.h>
+#include <net/if.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <linux/sockios.h>
#ifndef __KLIBC__
#include <pwd.h>
#include <utmp.h>
#include "libsysfs/sysfs/libsysfs.h"
#include "udev.h"
+#include "udev_lib.h"
#include "udev_version.h"
-#include "udev_dbus.h"
-#include "udev_selinux.h"
#include "logging.h"
#include "namedev.h"
#include "udevdb.h"
*/
static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
{
- int retval = -ENODEV;
struct sysfs_attribute *attr = NULL;
attr = sysfs_get_classdev_attr(class_dev, "dev");
if (attr == NULL)
- goto exit;
+ goto error;
dbg("dev='%s'", attr->value);
if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
- goto exit;
+ goto error;
dbg("found major=%d, minor=%d", udev->major, udev->minor);
- retval = 0;
-exit:
- return retval;
+ return 0;
+error:
+ return -1;
}
static int create_path(char *file)
if (retval != 0) {
dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
filename, mode, major, minor, strerror(errno));
- return retval;
+ goto exit;
}
dbg("chmod(%s, %#o)", filename, mode);
- retval = chmod(filename, mode);
- if (retval != 0) {
+ if (chmod(filename, mode) != 0) {
dbg("chmod(%s, %#o) failed with error '%s'",
filename, mode, strerror(errno));
- return retval;
+ goto exit;
}
if (uid != 0 || gid != 0) {
dbg("chown(%s, %u, %u)", filename, uid, gid);
- retval = chown(filename, uid, gid);
- if (retval != 0) {
+ if (chown(filename, uid, gid) != 0) {
dbg("chown(%s, %u, %u) failed with error '%s'",
filename, uid, gid, strerror(errno));
- return retval;
+ goto exit;
}
}
- return 0;
+exit:
+ return retval;
}
/* get the local logged in user */
struct utmp *u;
time_t recent = 0;
- strnfieldcpy(user, default_owner_str, OWNER_SIZE);
+ strfieldcpymax(user, default_owner_str, OWNER_SIZE);
setutent();
while (1) {
u = getutent();
if (u->ut_time > recent) {
recent = u->ut_time;
- strnfieldcpy(user, u->ut_user, OWNER_SIZE);
+ strfieldcpymax(user, u->ut_user, OWNER_SIZE);
dbg("local user is '%s'", user);
break;
}
endutent();
}
-/* Used to unlink existing files to ensure that our new file/symlink is created */
static int unlink_entry(char *filename)
{
struct stat stats;
static int create_node(struct udevice *dev, int fake)
{
- char filename[255];
- char linktarget[255];
- char partitionname[255];
- char *linkname;
- char *symlinks;
- int retval = 0;
+ char filename[NAME_SIZE];
+ char linkname[NAME_SIZE];
+ char linktarget[NAME_SIZE];
+ char partitionname[NAME_SIZE];
uid_t uid = 0;
gid_t gid = 0;
int i;
int tail;
+ char *pos;
+ int len;
strfieldcpy(filename, udev_root);
strfieldcat(filename, dev->name);
if (endptr[0] == '\0')
uid = (uid_t) id;
else {
+ struct passwd *pw;
if (strncmp(dev->owner, LOCAL_USER, sizeof(LOCAL_USER)) == 0)
set_to_local_user(dev->owner);
- struct passwd *pw = getpwnam(dev->owner);
+ pw = getpwnam(dev->owner);
if (pw == NULL)
dbg("specified user unknown '%s'", dev->owner);
else
if (!fake) {
unlink_entry(filename);
info("creating device node '%s'", filename);
- make_node(filename, dev->major, dev->minor, dev->mode, uid, gid);
+ if (make_node(filename, dev->major, dev->minor, dev->mode, uid, gid) != 0)
+ goto error;
} else {
info("creating device node '%s', major = '%d', minor = '%d', "
"mode = '%#o', uid = '%d', gid = '%d'", filename,
dev->major, dev->minor, (mode_t)dev->mode, uid, gid);
}
- /* create partitions if requested */
+ /* create all_partitions if requested */
if (dev->partitions > 0) {
info("creating device partition nodes '%s[1-%i]'", filename, dev->partitions);
if (!fake) {
}
}
- if (!fake)
- selinux_add_node(filename);
-
- /* create symlink if requested */
- if (dev->symlink[0] != '\0') {
- symlinks = dev->symlink;
- while (1) {
- linkname = strsep(&symlinks, " ");
- if (linkname == NULL || linkname[0] == '\0')
- break;
-
- strfieldcpy(filename, udev_root);
- strfieldcat(filename, linkname);
- dbg("symlink '%s' to node '%s' requested", filename, dev->name);
- if (!fake)
- if (strrchr(linkname, '/'))
- create_path(filename);
-
- /* optimize relative link */
- linktarget[0] = '\0';
- i = 0;
- tail = 0;
- while ((dev->name[i] == linkname[i]) && dev->name[i]) {
- if (dev->name[i] == '/')
- tail = i+1;
- i++;
- }
- while (linkname[i] != '\0') {
- if (linkname[i] == '/')
- strfieldcat(linktarget, "../");
- i++;
- }
+ /* create symlink(s) if requested */
+ foreach_strpart(dev->symlink, " ", pos, len) {
+ strfieldcpymax(linkname, pos, len+1);
+ strfieldcpy(filename, udev_root);
+ strfieldcat(filename, linkname);
+ dbg("symlink '%s' to node '%s' requested", filename, dev->name);
+ if (!fake)
+ if (strrchr(linkname, '/'))
+ create_path(filename);
+
+ /* optimize relative link */
+ linktarget[0] = '\0';
+ i = 0;
+ tail = 0;
+ while ((dev->name[i] == linkname[i]) && dev->name[i]) {
+ if (dev->name[i] == '/')
+ tail = i+1;
+ i++;
+ }
+ while (linkname[i] != '\0') {
+ if (linkname[i] == '/')
+ strfieldcat(linktarget, "../");
+ i++;
+ }
- strfieldcat(linktarget, &dev->name[tail]);
+ strfieldcat(linktarget, &dev->name[tail]);
- if (!fake)
- unlink_entry(filename);
+ if (!fake)
+ unlink_entry(filename);
- dbg("symlink(%s, %s)", linktarget, filename);
- if (!fake) {
- retval = symlink(linktarget, filename);
- if (retval != 0)
- dbg("symlink(%s, %s) failed with error '%s'",
- linktarget, filename, strerror(errno));
- }
+ dbg("symlink(%s, %s)", linktarget, filename);
+ if (!fake) {
+ if (symlink(linktarget, filename) != 0)
+ dbg("symlink(%s, %s) failed with error '%s'",
+ linktarget, filename, strerror(errno));
}
}
- return retval;
+ return 0;
+error:
+ return -1;
}
static struct sysfs_class_device *get_class_dev(char *device_name)
/* wait for the "dev" file to show up in the directory in sysfs.
* If it doesn't happen in about 10 seconds, give up.
*/
-#define SECONDS_TO_WAIT_FOR_DEV 10
-static int sleep_for_dev(char *path)
+#define SECONDS_TO_WAIT_FOR_FILE 10
+static int sleep_for_file(char *path, char* file)
{
char filename[SYSFS_PATH_MAX + 6];
- int loop = SECONDS_TO_WAIT_FOR_DEV;
+ int loop = SECONDS_TO_WAIT_FOR_FILE;
int retval;
strfieldcpy(filename, sysfs_path);
strfieldcat(filename, path);
- strfieldcat(filename, "/dev");
+ strfieldcat(filename, file);
while (loop--) {
struct stat buf;
return retval;
}
+static int rename_net_if(struct udevice *dev, int fake)
+{
+ int sk;
+ struct ifreq ifr;
+ int retval;
+
+ dbg("changing net interface name from '%s' to '%s'", dev->kernel_name, dev->name);
+ if (fake)
+ return 0;
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0) {
+ dbg("error opening socket");
+ return -1;
+ }
+
+ memset(&ifr, 0x00, sizeof(struct ifreq));
+ strfieldcpy(ifr.ifr_name, dev->kernel_name);
+ strfieldcpy(ifr.ifr_newname, dev->name);
+
+ retval = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (retval != 0)
+ dbg("error changing net interface name");
+ close(sk);
+
+ return retval;
+}
+
int udev_add_device(char *path, char *subsystem, int fake)
{
- struct sysfs_class_device *class_dev = NULL;
+ struct sysfs_class_device *class_dev;
struct udevice dev;
- int retval = -EINVAL;
+ char devpath[DEVPATH_SIZE];
+ char *pos;
+ int retval;
memset(&dev, 0x00, sizeof(dev));
- /* for now, the block layer is the only place where block devices are */
- if (strcmp(subsystem, "block") == 0)
- dev.type = 'b';
- else
- dev.type = 'c';
+ dev.type = get_device_type(path, subsystem);
+ switch (dev.type) {
+ case 'b':
+ case 'c':
+ retval = sleep_for_file(path, "/dev");
+ break;
- retval = sleep_for_dev(path);
- if (retval != 0)
- goto exit;
+ case 'n':
+ retval = sleep_for_file(path, "/address");
+ break;
+
+ default:
+ dbg("unknown device type '%c'", dev.type);
+ return -1;
+ }
class_dev = get_class_dev(path);
if (class_dev == NULL)
- goto exit;
+ return -1;
- retval = get_major_minor(class_dev, &dev);
- if (retval != 0) {
- dbg("get_major_minor failed");
- goto exit;
+ if (dev.type == 'b' || dev.type == 'c') {
+ retval = get_major_minor(class_dev, &dev);
+ if (retval != 0) {
+ dbg("get_major_minor failed");
+ goto exit;
+ }
}
- retval = namedev_name_device(class_dev, &dev);
- if (retval != 0)
+ if (namedev_name_device(class_dev, &dev) != 0)
goto exit;
- if (!fake) {
- retval = udevdb_add_dev(path, &dev);
- if (retval != 0)
+ dbg("name='%s'", dev.name);
+
+ switch (dev.type) {
+ case 'b':
+ case 'c':
+ retval = create_node(&dev, fake);
+ if (fake || retval != 0)
+ goto exit;
+ if (udevdb_add_dev(path, &dev) != 0)
dbg("udevdb_add_dev failed, but we are going to try "
"to create the node anyway. But remove might not "
"work properly for this device.");
- }
- dbg("name='%s'", dev.name);
- retval = create_node(&dev, fake);
+ dev_d_send(&dev, subsystem, path);
+ break;
+
+ case 'n':
+ if (strcmp(dev.name, dev.kernel_name) != 0) {
+ retval = rename_net_if(&dev, fake);
+ if (fake || retval != 0)
+ goto exit;
+ /* netif's are keyed with the configured name, cause
+ * the original kernel name sleeps with the fishes
+ */
+ strfieldcpy(devpath, path);
+ pos = strrchr(devpath, '/');
+ if (pos != NULL) {
+ pos[1] = '\0';
+ strfieldcat(devpath, dev.name);
+ }
+ }
+ if (udevdb_add_dev(devpath, &dev) != 0)
+ dbg("udevdb_add_dev failed");
- if ((retval == 0) && (!fake))
- sysbus_send_create(&dev, path);
+ dev_d_send(&dev, subsystem, devpath);
+ break;
+ }
exit:
- if (class_dev)
- sysfs_close_class_device(class_dev);
+ sysfs_close_class_device(class_dev);
return retval;
}
~ianmdlvl / elogind.git / blobdiff