/*
* udev-add.c
*
- * Userspace devfs
- *
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- *
+ * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
*
* 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
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
+#include <stddef.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <grp.h>
#include <net/if.h>
-#include <sys/socket.h>
#include <sys/ioctl.h>
#include <linux/sockios.h>
-#include "libsysfs/sysfs/libsysfs.h"
-#include "udev_libc_wrapper.h"
#include "udev.h"
-#include "udev_utils.h"
-#include "udev_sysfs.h"
-#include "udev_version.h"
-#include "logging.h"
-#include "namedev.h"
-#include "udev_db.h"
+#include "udev_rules.h"
#include "udev_selinux.h"
struct stat stats;
int retval = 0;
+ if (major(devt) != 0 && strcmp(udev->dev->subsystem, "block") == 0)
+ mode |= S_IFBLK;
+ else
+ mode |= S_IFCHR;
+
if (stat(file, &stats) != 0)
goto create;
- /* 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 == devt)) {
- dbg("preserve file '%s', cause it has correct dev_t", file);
- selinux_setfilecon(file, udev->kernel_name, stats.st_mode);
+ /* preserve node with already correct numbers, to prevent changing the inode number */
+ if ((stats.st_mode & S_IFMT) == (mode & S_IFMT) && (stats.st_rdev == devt)) {
+ info("preserve file '%s', cause it has correct dev_t", file);
+ selinux_setfilecon(file, udev->dev->kernel_name, stats.st_mode);
goto perms;
}
if (unlink(file) != 0)
- dbg("unlink(%s) failed with error '%s'", file, strerror(errno));
+ err("unlink(%s) failed: %s", file, strerror(errno));
else
dbg("already present file '%s' unlinked", file);
create:
- 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);
+ selinux_setfscreatecon(file, udev->dev->kernel_name, mode);
retval = mknod(file, mode, devt);
selinux_resetfscreatecon();
if (retval != 0) {
- dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
+ err("mknod(%s, %#o, %u, %u) failed: %s",
file, mode, major(devt), minor(devt), strerror(errno));
goto exit;
}
perms:
dbg("chmod(%s, %#o)", file, mode);
if (chmod(file, mode) != 0) {
- dbg("chmod(%s, %#o) failed with error '%s'", file, mode, strerror(errno));
+ err("chmod(%s, %#o) failed: %s", file, mode, strerror(errno));
goto exit;
}
if (uid != 0 || gid != 0) {
dbg("chown(%s, %u, %u)", file, uid, gid);
if (chown(file, uid, gid) != 0) {
- dbg("chown(%s, %u, %u) failed with error '%s'",
+ err("chown(%s, %u, %u) failed: %s",
file, uid, gid, strerror(errno));
goto exit;
}
return retval;
}
-static int create_node(struct udevice *udev, struct sysfs_class_device *class_dev)
+static int create_node(struct udevice *udev)
{
char filename[PATH_SIZE];
- char partitionname[PATH_SIZE];
struct name_entry *name_loop;
uid_t uid;
gid_t gid;
if (endptr[0] == '\0')
gid = (gid_t) id;
else
- gid = lookup_user(udev->group);
+ gid = lookup_group(udev->group);
}
- if (!udev->test_run) {
- info("creating device node '%s'", filename);
+ info("creating device node '%s', major = '%d', minor = '%d', " "mode = '%#o', uid = '%d', gid = '%d'",
+ filename, major(udev->devt), minor(udev->devt), udev->mode, uid, gid);
+
+ if (!udev->test_run)
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,
- major(udev->devt), minor(udev->devt), udev->mode, uid, gid);
- }
+
+ setenv("DEVNAME", filename, 1);
/* create all_partitions if requested */
if (udev->partitions) {
- struct sysfs_attribute *attr;
+ char partitionname[PATH_SIZE];
+ char *attr;
int range;
/* take the maximum registered minor range */
- attr = sysfs_get_classdev_attr(class_dev, "range");
+ attr = sysfs_attr_get_value(udev->dev->devpath, "range");
if (attr) {
- range = atoi(attr->value);
+ range = atoi(attr);
if (range > 1)
udev->partitions = range-1;
}
snprintf(partitionname, sizeof(partitionname), "%s%d", filename, i);
partitionname[sizeof(partitionname)-1] = '\0';
- part_devt = makedev(major(udev->devt), minor(udev->devt)+1);
+ part_devt = makedev(major(udev->devt), minor(udev->devt) + i);
udev_make_node(udev, partitionname, part_devt, udev->mode, uid, gid);
}
}
}
/* create symlink(s) if requested */
- list_for_each_entry(name_loop, &udev->symlink_list, node) {
- int retval;
- char linktarget[PATH_SIZE];
-
- snprintf(filename, sizeof(filename), "%s/%s", udev_root, name_loop->name);
- filename[sizeof(filename)-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 (udev->name[i] && (udev->name[i] == name_loop->name[i])) {
- if (udev->name[i] == '/')
- tail = i+1;
- i++;
- }
- while (name_loop->name[i] != '\0') {
- if (name_loop->name[i] == '/')
- strlcat(linktarget, "../", sizeof(linktarget));
- i++;
- }
+ if (!list_empty(&udev->symlink_list)) {
+ char symlinks[512] = "";
+
+ list_for_each_entry(name_loop, &udev->symlink_list, node) {
+ int retval;
+ char linktarget[PATH_SIZE];
+
+ snprintf(filename, sizeof(filename), "%s/%s", udev_root, name_loop->name);
+ filename[sizeof(filename)-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 (udev->name[i] && (udev->name[i] == name_loop->name[i])) {
+ if (udev->name[i] == '/')
+ tail = i+1;
+ i++;
+ }
+ while (name_loop->name[i] != '\0') {
+ if (name_loop->name[i] == '/')
+ strlcat(linktarget, "../", sizeof(linktarget));
+ i++;
+ }
- strlcat(linktarget, &udev->name[tail], sizeof(linktarget));
+ strlcat(linktarget, &udev->name[tail], sizeof(linktarget));
+
+ info("creating symlink '%s' to '%s'", filename, linktarget);
+ if (!udev->test_run) {
+ unlink(filename);
+ selinux_setfscreatecon(filename, NULL, S_IFLNK);
+ retval = symlink(linktarget, filename);
+ selinux_resetfscreatecon();
+ if (retval != 0)
+ err("symlink(%s, %s) failed: %s",
+ linktarget, filename, strerror(errno));
+ }
- dbg("symlink(%s, %s)", linktarget, filename);
- if (!udev->test_run) {
- unlink(filename);
- selinux_setfscreatecon(filename, udev->kernel_name, S_IFLNK);
- retval = symlink(linktarget, filename);
- selinux_resetfscreatecon();
- if (retval != 0)
- dbg("symlink(%s, %s) failed with error '%s'",
- linktarget, filename, strerror(errno));
+ strlcat(symlinks, filename, sizeof(symlinks));
+ strlcat(symlinks, " ", sizeof(symlinks));
}
+
+ remove_trailing_chars(symlinks, ' ');
+ setenv("DEVLINKS", symlinks, 1);
}
return 0;
struct ifreq ifr;
int retval;
- dbg("changing net interface name from '%s' to '%s'", udev->kernel_name, udev->name);
+ info("changing net interface name from '%s' to '%s'", udev->dev->kernel_name, udev->name);
if (udev->test_run)
return 0;
sk = socket(PF_INET, SOCK_DGRAM, 0);
if (sk < 0) {
- dbg("error opening socket");
+ err("error opening socket: %s", strerror(errno));
return -1;
}
memset(&ifr, 0x00, sizeof(struct ifreq));
- strlcpy(ifr.ifr_name, udev->kernel_name, IFNAMSIZ);
+ strlcpy(ifr.ifr_name, udev->dev->kernel_name, IFNAMSIZ);
strlcpy(ifr.ifr_newname, udev->name, IFNAMSIZ);
retval = ioctl(sk, SIOCSIFNAME, &ifr);
if (retval != 0)
- dbg("error changing net interface name");
+ err("error changing net interface name: %s", strerror(errno));
close(sk);
return retval;
}
-int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev)
+int udev_add_device(struct udevice *udev)
{
char *pos;
int retval = 0;
- 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(udev, class_dev) != 0)
- return 0;
-
dbg("adding name='%s'", udev->name);
-
selinux_init();
- if (udev->type == BLOCK || udev->type == CLASS) {
- retval = create_node(udev, class_dev);
+ if (major(udev->devt)) {
+ retval = create_node(udev);
if (retval != 0)
goto exit;
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");
-
- /* use full path to the environment */
- snprintf(udev->devname, sizeof(udev->devname), "%s/%s", udev_root, udev->name);
- udev->devname[sizeof(udev->devname)-1] = '\0';
-
- } else if (udev->type == NET) {
+ dbg("udev_db_add_dev failed, remove might not work for custom names");
+ } else if (strcmp(udev->dev->subsystem, "net") == 0) {
/* look if we want to change the name of the netif */
- if (strcmp(udev->name, udev->kernel_name) != 0) {
+ if (strcmp(udev->name, udev->dev->kernel_name) != 0) {
retval = rename_net_if(udev);
if (retval != 0)
goto exit;
+ info("renamed netif to '%s'", udev->name);
/* 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(udev->devpath, '/');
+ pos = strrchr(udev->dev->devpath, '/');
if (pos != NULL) {
pos[1] = '\0';
- strlcat(udev->devpath, udev->name, sizeof(udev->devpath));
- setenv("DEVPATH", udev->devpath, 1);
+ strlcat(udev->dev->devpath, udev->name, sizeof(udev->dev->devpath));
+ strlcpy(udev->dev->kernel_name, udev->name, sizeof(udev->dev->kernel_name));
+ setenv("DEVPATH", udev->dev->devpath, 1);
setenv("INTERFACE", udev->name, 1);
}
-
- /* use netif name for the environment */
- strlcpy(udev->devname, udev->name, sizeof(udev->devname));
}
}
exit:
selinux_exit();
-
return retval;
}
~ianmdlvl / elogind.git / blobdiff