#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>
#endif
#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"
#include "klibc_fixups.h"
+#define LOCAL_USER "$local"
+
/*
* Right now the major/minor of a device is stored in a file called
* "dev" in sysfs.
return 0;
}
-static int create_node(struct udevice *dev, int fake)
+/* get the local logged in user */
+static void set_to_local_user(char *user)
+{
+ struct utmp *u;
+ time_t recent = 0;
+
+ strfieldcpymax(user, default_owner_str, OWNER_SIZE);
+ setutent();
+ while (1) {
+ u = getutent();
+ if (u == NULL)
+ break;
+
+ /* is this a user login ? */
+ if (u->ut_type != USER_PROCESS)
+ continue;
+
+ /* is this a local login ? */
+ if (strcmp(u->ut_host, ""))
+ continue;
+
+ if (u->ut_time > recent) {
+ recent = u->ut_time;
+ 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;
- char filename[255];
- char linktarget[255];
- char partitionname[255];
- char *linkname;
- char *symlinks;
+ int retval = 0;
+
+ if (lstat(filename, &stats) == 0) {
+ if ((stats.st_mode & S_IFMT) != S_IFDIR) {
+ retval = unlink(filename);
+ if (retval) {
+ dbg("unlink(%s) failed with error '%s'",
+ filename, strerror(errno));
+ }
+ }
+ }
+ return retval;
+}
+
+static int create_node(struct udevice *dev, int fake)
+{
+ char filename[NAME_SIZE];
+ char linkname[NAME_SIZE];
+ char linktarget[NAME_SIZE];
+ char partitionname[NAME_SIZE];
int retval = 0;
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 = getpwnam(dev->owner);
+ struct passwd *pw;
+ if (strncmp(dev->owner, LOCAL_USER, sizeof(LOCAL_USER)) == 0)
+ set_to_local_user(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);
} else {
for (i = 1; i <= dev->partitions; i++) {
strfieldcpy(partitionname, filename);
strintcat(partitionname, i);
+ unlink_entry(partitionname);
make_node(partitionname, dev->major,
dev->minor + i, dev->mode, uid, gid);
}
}
}
- 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++;
- }
+ 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]);
- /* unlink existing files to ensure that our symlink is created */
- if (!fake && (lstat(filename, &stats) == 0)) {
- if ((stats.st_mode & S_IFMT) != S_IFDIR) {
- if (unlink(filename))
- dbg("unlink(%s) failed with error '%s'",
- filename, strerror(errno));
- }
- }
+ 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) {
+ retval = symlink(linktarget, filename);
+ if (retval != 0)
+ dbg("symlink(%s, %s) failed with error '%s'",
+ linktarget, filename, strerror(errno));
}
}
/* 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 sk;
+ struct ifreq ifr;
+ int retval;
+
+ 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);
+
+ dbg("changing net interface name from '%s' to '%s'", dev->kernel_name, dev->name);
+ retval = ioctl(sk, SIOCSIFNAME, &ifr);
+ if (retval != 0)
+ dbg("error changing net interface name");
+
+ return retval;
+}
+
int udev_add_device(char *path, char *subsystem, int fake)
{
struct sysfs_class_device *class_dev = NULL;
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';
- retval = sleep_for_dev(path);
- if (retval != 0)
- goto exit;
+ dev.type = get_device_type(path, subsystem);
+
+ switch (dev.type) {
+ case 'b':
+ case 'c':
+ retval = sleep_for_file(path, "/dev");
+ break;
+
+ case 'n':
+ retval = sleep_for_file(path, "/address");
+ break;
+
+ default:
+ dbg("unknown device type '%c'", dev.type);
+ retval = -EINVAL;
+ }
class_dev = get_class_dev(path);
if (class_dev == NULL)
goto exit;
- 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)
goto exit;
- if (!fake) {
+ if (!fake && (dev.type == 'b' || dev.type == 'c')) {
retval = udevdb_add_dev(path, &dev);
if (retval != 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);
+ switch (dev.type) {
+ case 'b':
+ case 'c':
+ retval = create_node(&dev, fake);
+ break;
+
+ case 'n':
+ retval = rename_net_if(&dev);
+ if (retval != 0)
+ dbg("net device naming failed");
+ break;
+ }
if ((retval == 0) && (!fake))
- sysbus_send_create(&dev, path);
+ dev_d_send(&dev, subsystem);
exit:
if (class_dev)
~ianmdlvl / elogind.git / blobdiff