#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_utils.h"
+#include "udev_sysfs.h"
#include "udev_version.h"
#include "logging.h"
#include "namedev.h"
-#include "udevdb.h"
-#include "klibc_fixups.h"
+#include "udev_db.h"
+#include "udev_selinux.h"
-#define LOCAL_USER "$local"
-#include "selinux.h"
-
-/*
- * Right now the major/minor of a device is stored in a file called
- * "dev" in sysfs.
- * The number is stored as:
- * MM:mm
- * MM is the major
- * mm is the minor
- * The value is in decimal.
- */
-static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
-{
- struct sysfs_attribute *attr = NULL;
-
- attr = sysfs_get_classdev_attr(class_dev, "dev");
- if (attr == NULL)
- goto error;
- dbg("dev='%s'", attr->value);
-
- if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
- goto error;
- dbg("found major=%d, minor=%d", udev->major, udev->minor);
-
- return 0;
-error:
- return -1;
-}
-
-static int create_path(char *file)
-{
- char p[NAME_SIZE];
- char *pos;
- int retval;
- struct stat stats;
-
- strfieldcpy(p, file);
- pos = strchr(p+1, '/');
- while (1) {
- pos = strchr(pos+1, '/');
- if (pos == NULL)
- break;
- *pos = 0x00;
- if (stat(p, &stats)) {
- selinux_setfscreatecon(p, S_IFDIR);
- retval = mkdir(p, 0755);
- if (retval != 0) {
- dbg("mkdir(%s) failed with error '%s'",
- p, strerror(errno));
- return retval;
- }
- dbg("created '%s'", p);
- } else {
- selinux_setfilecon(p, S_IFDIR);
- }
- *pos = '/';
- }
- return 0;
-}
-
-static int make_node(char *file, int major, int minor, unsigned int mode, uid_t uid, gid_t gid)
+int udev_make_node(struct udevice *udev, const char *file, dev_t devt, mode_t mode, uid_t uid, gid_t gid)
{
struct stat stats;
int retval = 0;
/* preserve node with already correct numbers, to not change the inode number */
if (((stats.st_mode & S_IFMT) == S_IFBLK || (stats.st_mode & S_IFMT) == S_IFCHR) &&
- (stats.st_rdev == makedev(major, minor))) {
+ (stats.st_rdev == devt)) {
dbg("preserve file '%s', cause it has correct dev_t", file);
- selinux_setfilecon(file,stats.st_mode);
+ selinux_setfilecon(file, udev->kernel_name, stats.st_mode);
goto perms;
}
dbg("already present file '%s' unlinked", file);
create:
- selinux_setfscreatecon(file, mode);
- retval = mknod(file, mode, makedev(major, minor));
+ switch (udev->type) {
+ case BLOCK:
+ mode |= S_IFBLK;
+ break;
+ case CLASS:
+ mode |= S_IFCHR;
+ break;
+ default:
+ dbg("unknown node type %c\n", udev->type);
+ return -EINVAL;
+ }
+
+ selinux_setfscreatecon(file, udev->kernel_name, mode);
+ retval = mknod(file, mode, devt);
if (retval != 0) {
dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
- file, mode, major, minor, strerror(errno));
+ file, mode, major(devt), minor(devt), strerror(errno));
goto exit;
}
return retval;
}
-/* 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();
-}
-
-static int create_node(struct udevice *dev, int fake)
+static int create_node(struct udevice *udev, struct sysfs_class_device *class_dev)
{
char filename[NAME_SIZE];
- char linkname[NAME_SIZE];
- char linktarget[NAME_SIZE];
char partitionname[NAME_SIZE];
+ struct name_entry *name_loop;
uid_t uid = 0;
gid_t gid = 0;
- int i;
int tail;
- char *pos;
- int len;
-
- strfieldcpy(filename, udev_root);
- strfieldcat(filename, dev->name);
+ int i;
- switch (dev->type) {
- case 'b':
- dev->mode |= S_IFBLK;
- break;
- case 'c':
- case 'u':
- dev->mode |= S_IFCHR;
- break;
- case 'p':
- dev->mode |= S_IFIFO;
- break;
- default:
- dbg("unknown node type %c\n", dev->type);
- return -EINVAL;
- }
+ snprintf(filename, NAME_SIZE, "%s/%s", udev_root, udev->name);
+ filename[NAME_SIZE-1] = '\0';
/* create parent directories if needed */
- if (strrchr(dev->name, '/'))
+ if (strchr(udev->name, '/'))
create_path(filename);
- if (dev->owner[0] != '\0') {
+ if (udev->owner[0] != '\0') {
char *endptr;
- unsigned long id = strtoul(dev->owner, &endptr, 10);
+ unsigned long id = strtoul(udev->owner, &endptr, 10);
+
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);
- pw = getpwnam(dev->owner);
+ pw = getpwnam(udev->owner);
if (pw == NULL)
- dbg("specified user unknown '%s'", dev->owner);
+ dbg("specified user unknown '%s'", udev->owner);
else
uid = pw->pw_uid;
}
}
- if (dev->group[0] != '\0') {
+ if (udev->group[0] != '\0') {
char *endptr;
- unsigned long id = strtoul(dev->group, &endptr, 10);
+ unsigned long id = strtoul(udev->group, &endptr, 10);
+
if (endptr[0] == '\0')
gid = (gid_t) id;
else {
- struct group *gr = getgrnam(dev->group);
+ struct group *gr = getgrnam(udev->group);
if (gr == NULL)
- dbg("specified group unknown '%s'", dev->group);
+ dbg("specified group unknown '%s'", udev->group);
else
gid = gr->gr_gid;
}
}
- if (!fake) {
+ if (!udev->test_run) {
info("creating device node '%s'", filename);
- if (make_node(filename, dev->major, dev->minor, dev->mode, uid, gid) != 0)
+ if (udev_make_node(udev, filename, udev->devt, udev->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);
+ major(udev->devt), minor(udev->devt), udev->mode, uid, gid);
}
/* create all_partitions if requested */
- if (dev->partitions > 0) {
- info("creating device partition nodes '%s[1-%i]'", filename, dev->partitions);
- if (!fake) {
- for (i = 1; i <= dev->partitions; i++) {
- strfieldcpy(partitionname, filename);
- strintcat(partitionname, i);
- make_node(partitionname, dev->major,
- dev->minor + i, dev->mode, uid, gid);
+ if (udev->partitions) {
+ struct sysfs_attribute *attr;
+ int range;
+
+ /* take the maximum registered minor range */
+ attr = sysfs_get_classdev_attr(class_dev, "range");
+ if (attr) {
+ range = atoi(attr->value);
+ if (range > 1)
+ udev->partitions = range-1;
+ }
+ info("creating device partition nodes '%s[1-%i]'", filename, udev->partitions);
+ if (!udev->test_run) {
+ for (i = 1; i <= udev->partitions; i++) {
+ dev_t part_devt;
+
+ snprintf(partitionname, NAME_SIZE, "%s%d", filename, i);
+ partitionname[NAME_SIZE-1] = '\0';
+ part_devt = makedev(major(udev->devt), minor(udev->devt)+1);
+ udev_make_node(udev, partitionname, part_devt, udev->mode, uid, gid);
}
}
}
/* 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, '/'))
+ list_for_each_entry(name_loop, &udev->symlink_list, node) {
+ char linktarget[NAME_SIZE];
+
+ snprintf(filename, NAME_SIZE, "%s/%s", udev_root, name_loop->name);
+ filename[NAME_SIZE-1] = '\0';
+
+ dbg("symlink '%s' to node '%s' requested", filename, udev->name);
+ if (!udev->test_run)
+ if (strchr(filename, '/'))
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] == '/')
+ while (udev->name[i] && (udev->name[i] == name_loop->name[i])) {
+ if (udev->name[i] == '/')
tail = i+1;
i++;
}
- while (linkname[i] != '\0') {
- if (linkname[i] == '/')
+ while (name_loop->name[i] != '\0') {
+ if (name_loop->name[i] == '/')
strfieldcat(linktarget, "../");
i++;
}
- strfieldcat(linktarget, &dev->name[tail]);
+ strfieldcat(linktarget, &udev->name[tail]);
dbg("symlink(%s, %s)", linktarget, filename);
- if (!fake) {
- selinux_setfscreatecon(filename, S_IFLNK);
+ if (!udev->test_run) {
+ selinux_setfscreatecon(filename, udev->kernel_name, S_IFLNK);
unlink(filename);
if (symlink(linktarget, filename) != 0)
dbg("symlink(%s, %s) failed with error '%s'",
return -1;
}
-static struct sysfs_class_device *get_class_dev(const char *device_name)
-{
- char dev_path[SYSFS_PATH_MAX];
- struct sysfs_class_device *class_dev = NULL;
-
- strfieldcpy(dev_path, sysfs_path);
- strfieldcat(dev_path, device_name);
- dbg("looking at '%s'", dev_path);
-
- /* open up the sysfs class device for this thing... */
- class_dev = sysfs_open_class_device_path(dev_path);
- if (class_dev == NULL) {
- dbg ("sysfs_open_class_device_path failed");
- goto exit;
- }
- dbg("class_dev->name='%s'", class_dev->name);
-
-exit:
- return class_dev;
-}
-
-/* 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_FILE 10
-static int sleep_for_file(const char *path, char* file)
-{
- char filename[SYSFS_PATH_MAX + 6];
- int loop = SECONDS_TO_WAIT_FOR_FILE;
- int retval;
-
- strfieldcpy(filename, sysfs_path);
- strfieldcat(filename, path);
- strfieldcat(filename, file);
-
- while (loop--) {
- struct stat buf;
-
- dbg("looking for '%s'", filename);
- retval = stat(filename, &buf);
- if (retval == 0)
- goto exit;
-
- /* sleep to give the kernel a chance to create the dev file */
- sleep(1);
- }
- retval = -ENODEV;
-exit:
- return retval;
-}
-
-static int rename_net_if(struct udevice *dev, int fake)
+static int rename_net_if(struct udevice *udev)
{
int sk;
struct ifreq ifr;
int retval;
- dbg("changing net interface name from '%s' to '%s'", dev->kernel_name, dev->name);
- if (fake)
+ dbg("changing net interface name from '%s' to '%s'", udev->kernel_name, udev->name);
+ if (udev->test_run)
return 0;
sk = socket(PF_INET, SOCK_DGRAM, 0);
}
memset(&ifr, 0x00, sizeof(struct ifreq));
- strfieldcpy(ifr.ifr_name, dev->kernel_name);
- strfieldcpy(ifr.ifr_newname, dev->name);
+ strfieldcpy(ifr.ifr_name, udev->kernel_name);
+ strfieldcpy(ifr.ifr_newname, udev->name);
retval = ioctl(sk, SIOCSIFNAME, &ifr);
if (retval != 0)
return retval;
}
-int udev_add_device(const char *path, const char *subsystem, int fake)
+int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev)
{
- struct sysfs_class_device *class_dev;
- struct udevice dev;
- char devpath[DEVPATH_SIZE];
char *pos;
- int retval;
-
- memset(&dev, 0x00, sizeof(dev));
-
- 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);
- return -1;
- }
-
- class_dev = get_class_dev(path);
- if (class_dev == NULL)
- return -1;
+ int retval = 0;
- if (dev.type == 'b' || dev.type == 'c') {
- retval = get_major_minor(class_dev, &dev);
- if (retval != 0) {
- dbg("get_major_minor failed");
- goto exit;
+ if (udev->type == BLOCK || udev->type == CLASS) {
+ udev->devt = get_devt(class_dev);
+ if (!udev->devt) {
+ dbg("no dev-file found, do nothing");
+ return 0;
}
}
- if (namedev_name_device(class_dev, &dev) != 0)
- goto exit;
+ if (namedev_name_device(udev, class_dev) != 0)
+ return 0;
- dbg("name='%s'", dev.name);
+ dbg("adding name='%s'", udev->name);
selinux_init();
- switch (dev.type) {
- case 'b':
- case 'c':
- retval = create_node(&dev, fake);
+
+ if (udev->type == BLOCK || udev->type == CLASS) {
+ retval = create_node(udev, class_dev);
if (retval != 0)
goto exit;
- if ((!fake) && (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.");
- dev_d_send(&dev, subsystem, path);
- break;
+ if (udev_db_add_device(udev) != 0)
+ dbg("udev_db_add_dev failed, but we create the node anyway, "
+ "remove might not work for custom names");
- case 'n':
- strfieldcpy(devpath, path);
- if (strcmp(dev.name, dev.kernel_name) != 0) {
- retval = rename_net_if(&dev, fake);
+ /* use full path to the environment */
+ snprintf(udev->devname, NAME_SIZE, "%s/%s", udev_root, udev->name);
+ udev->devname[NAME_SIZE-1] = '\0';
+
+ } else if (udev->type == NET) {
+ /* look if we want to change the name of the netif */
+ if (strcmp(udev->name, udev->kernel_name) != 0) {
+ retval = rename_net_if(udev);
if (retval != 0)
goto exit;
- /* netif's are keyed with the configured name, cause
- * the original kernel name sleeps with the fishes
+
+ /* we've changed the name, now fake the devpath, cause the
+ * original kernel name sleeps with the fishes and we don't
+ * get an event from the kernel with the new name
*/
- pos = strrchr(devpath, '/');
+ pos = strrchr(udev->devpath, '/');
if (pos != NULL) {
pos[1] = '\0';
- strfieldcat(devpath, dev.name);
+ strfieldcat(udev->devpath, udev->name);
+ setenv("DEVPATH", udev->devpath, 1);
+ setenv("INTERFACE", udev->name, 1);
}
- }
- if ((!fake) && (udevdb_add_dev(devpath, &dev) != 0))
- dbg("udevdb_add_dev failed");
- dev_d_send(&dev, subsystem, devpath);
- break;
+ /* use netif name for the environment */
+ strfieldcpy(udev->devname, udev->name);
+ }
}
exit:
selinux_restore();
- sysfs_close_class_device(class_dev);
return retval;
}
~ianmdlvl / elogind.git / blobdiff