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authorKay Sievers <kay.sievers@vrfy.org>2009-09-18 23:01:12 +0200
committerLive-CD User <linux@linux.site>2009-09-19 12:50:38 -0700
commite454cea20bdcff10ee698d11b8882662a0153a47 (patch)
treef44581fe57787aef0a4f4dc00993a90ea8e688f6
parent78f28b7c555359c67c2a0d23f7436e915329421e (diff)
Driver-Core: extend devnode callbacks to provide permissions
This allows subsytems to provide devtmpfs with non-default permissions for the device node. Instead of the default mode of 0600, null, zero, random, urandom, full, tty, ptmx now have a mode of 0666, which allows non-privileged processes to access standard device nodes in case no other userspace process applies the expected permissions. This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--arch/x86/kernel/cpuid.c4
-rw-r--r--arch/x86/kernel/microcode_core.c2
-rw-r--r--arch/x86/kernel/msr.c4
-rw-r--r--block/bsg.c4
-rw-r--r--block/genhd.c8
-rw-r--r--drivers/base/core.c19
-rw-r--r--drivers/base/devtmpfs.c24
-rw-r--r--drivers/block/aoe/aoechr.c4
-rw-r--r--drivers/block/pktcdvd.c6
-rw-r--r--drivers/char/hw_random/core.c2
-rw-r--r--drivers/char/mem.c29
-rw-r--r--drivers/char/misc.c10
-rw-r--r--drivers/char/raw.c4
-rw-r--r--drivers/char/tty_io.c11
-rw-r--r--drivers/gpu/drm/drm_sysfs.c4
-rw-r--r--drivers/hid/usbhid/hiddev.c4
-rw-r--r--drivers/input/input.c4
-rw-r--r--drivers/md/dm-ioctl.c2
-rw-r--r--drivers/media/dvb/dvb-core/dvbdev.c4
-rw-r--r--drivers/net/tun.c2
-rw-r--r--drivers/usb/class/usblp.c4
-rw-r--r--drivers/usb/core/file.c8
-rw-r--r--drivers/usb/core/usb.c4
-rw-r--r--drivers/usb/misc/iowarrior.c4
-rw-r--r--drivers/usb/misc/legousbtower.c4
-rw-r--r--include/linux/device.h7
-rw-r--r--include/linux/genhd.h2
-rw-r--r--include/linux/miscdevice.h3
-rw-r--r--include/linux/usb.h4
-rw-r--r--sound/sound_core.c4
30 files changed, 116 insertions, 79 deletions
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index b07af886124..6a52d4b36a3 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -182,7 +182,7 @@ static struct notifier_block __refdata cpuid_class_cpu_notifier =
.notifier_call = cpuid_class_cpu_callback,
};
-static char *cpuid_nodename(struct device *dev)
+static char *cpuid_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt));
}
@@ -203,7 +203,7 @@ static int __init cpuid_init(void)
err = PTR_ERR(cpuid_class);
goto out_chrdev;
}
- cpuid_class->nodename = cpuid_nodename;
+ cpuid_class->devnode = cpuid_devnode;
for_each_online_cpu(i) {
err = cpuid_device_create(i);
if (err != 0)
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 9371448290a..0db7969b0dd 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -236,7 +236,7 @@ static const struct file_operations microcode_fops = {
static struct miscdevice microcode_dev = {
.minor = MICROCODE_MINOR,
.name = "microcode",
- .devnode = "cpu/microcode",
+ .nodename = "cpu/microcode",
.fops = &microcode_fops,
};
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 7dd95009417..6a3cefc7dda 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -241,7 +241,7 @@ static struct notifier_block __refdata msr_class_cpu_notifier = {
.notifier_call = msr_class_cpu_callback,
};
-static char *msr_nodename(struct device *dev)
+static char *msr_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "cpu/%u/msr", MINOR(dev->devt));
}
@@ -262,7 +262,7 @@ static int __init msr_init(void)
err = PTR_ERR(msr_class);
goto out_chrdev;
}
- msr_class->nodename = msr_nodename;
+ msr_class->devnode = msr_devnode;
for_each_online_cpu(i) {
err = msr_device_create(i);
if (err != 0)
diff --git a/block/bsg.c b/block/bsg.c
index 5f184bb3ff9..0676301f16d 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -1062,7 +1062,7 @@ EXPORT_SYMBOL_GPL(bsg_register_queue);
static struct cdev bsg_cdev;
-static char *bsg_nodename(struct device *dev)
+static char *bsg_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "bsg/%s", dev_name(dev));
}
@@ -1087,7 +1087,7 @@ static int __init bsg_init(void)
ret = PTR_ERR(bsg_class);
goto destroy_kmemcache;
}
- bsg_class->nodename = bsg_nodename;
+ bsg_class->devnode = bsg_devnode;
ret = alloc_chrdev_region(&devid, 0, BSG_MAX_DEVS, "bsg");
if (ret)
diff --git a/block/genhd.c b/block/genhd.c
index 2ad91ddad8e..517e4332cb3 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -998,12 +998,12 @@ struct class block_class = {
.name = "block",
};
-static char *block_nodename(struct device *dev)
+static char *block_devnode(struct device *dev, mode_t *mode)
{
struct gendisk *disk = dev_to_disk(dev);
- if (disk->nodename)
- return disk->nodename(disk);
+ if (disk->devnode)
+ return disk->devnode(disk, mode);
return NULL;
}
@@ -1011,7 +1011,7 @@ static struct device_type disk_type = {
.name = "disk",
.groups = disk_attr_groups,
.release = disk_release,
- .nodename = block_nodename,
+ .devnode = block_devnode,
};
#ifdef CONFIG_PROC_FS
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 390e664ec1c..6bee6af8d8e 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -166,13 +166,16 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
if (MAJOR(dev->devt)) {
const char *tmp;
const char *name;
+ mode_t mode = 0;
add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt));
add_uevent_var(env, "MINOR=%u", MINOR(dev->devt));
- name = device_get_nodename(dev, &tmp);
+ name = device_get_devnode(dev, &mode, &tmp);
if (name) {
add_uevent_var(env, "DEVNAME=%s", name);
kfree(tmp);
+ if (mode)
+ add_uevent_var(env, "DEVMODE=%#o", mode & 0777);
}
}
@@ -1148,8 +1151,9 @@ static struct device *next_device(struct klist_iter *i)
}
/**
- * device_get_nodename - path of device node file
+ * device_get_devnode - path of device node file
* @dev: device
+ * @mode: returned file access mode
* @tmp: possibly allocated string
*
* Return the relative path of a possible device node.
@@ -1157,21 +1161,22 @@ static struct device *next_device(struct klist_iter *i)
* a name. This memory is returned in tmp and needs to be
* freed by the caller.
*/
-const char *device_get_nodename(struct device *dev, const char **tmp)
+const char *device_get_devnode(struct device *dev,
+ mode_t *mode, const char **tmp)
{
char *s;
*tmp = NULL;
/* the device type may provide a specific name */
- if (dev->type && dev->type->nodename)
- *tmp = dev->type->nodename(dev);
+ if (dev->type && dev->type->devnode)
+ *tmp = dev->type->devnode(dev, mode);
if (*tmp)
return *tmp;
/* the class may provide a specific name */
- if (dev->class && dev->class->nodename)
- *tmp = dev->class->nodename(dev);
+ if (dev->class && dev->class->devnode)
+ *tmp = dev->class->devnode(dev, mode);
if (*tmp)
return *tmp;
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index fd488ad4263..a1cb5afe680 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -6,9 +6,10 @@
* During bootup, before any driver core device is registered,
* devtmpfs, a tmpfs-based filesystem is created. Every driver-core
* device which requests a device node, will add a node in this
- * filesystem. The node is named after the the name of the device,
- * or the susbsytem can provide a custom name. All devices are
- * owned by root and have a mode of 0600.
+ * filesystem.
+ * By default, all devices are named after the the name of the
+ * device, owned by root and have a default mode of 0600. Subsystems
+ * can overwrite the default setting if needed.
*/
#include <linux/kernel.h>
@@ -20,6 +21,7 @@
#include <linux/fs.h>
#include <linux/shmem_fs.h>
#include <linux/cred.h>
+#include <linux/sched.h>
#include <linux/init_task.h>
static struct vfsmount *dev_mnt;
@@ -134,7 +136,7 @@ int devtmpfs_create_node(struct device *dev)
const char *tmp = NULL;
const char *nodename;
const struct cred *curr_cred;
- mode_t mode;
+ mode_t mode = 0;
struct nameidata nd;
struct dentry *dentry;
int err;
@@ -142,14 +144,16 @@ int devtmpfs_create_node(struct device *dev)
if (!dev_mnt)
return 0;
- nodename = device_get_nodename(dev, &tmp);
+ nodename = device_get_devnode(dev, &mode, &tmp);
if (!nodename)
return -ENOMEM;
+ if (mode == 0)
+ mode = 0600;
if (is_blockdev(dev))
- mode = S_IFBLK|0600;
+ mode |= S_IFBLK;
else
- mode = S_IFCHR|0600;
+ mode |= S_IFCHR;
curr_cred = override_creds(&init_cred);
err = vfs_path_lookup(dev_mnt->mnt_root, dev_mnt,
@@ -165,8 +169,12 @@ int devtmpfs_create_node(struct device *dev)
dentry = lookup_create(&nd, 0);
if (!IS_ERR(dentry)) {
+ int umask;
+
+ umask = sys_umask(0000);
err = vfs_mknod(nd.path.dentry->d_inode,
dentry, mode, dev->devt);
+ sys_umask(umask);
/* mark as kernel created inode */
if (!err)
dentry->d_inode->i_private = &dev_mnt;
@@ -271,7 +279,7 @@ int devtmpfs_delete_node(struct device *dev)
if (!dev_mnt)
return 0;
- nodename = device_get_nodename(dev, &tmp);
+ nodename = device_get_devnode(dev, NULL, &tmp);
if (!nodename)
return -ENOMEM;
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index 19888354188..62141ec09a2 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -266,7 +266,7 @@ static const struct file_operations aoe_fops = {
.owner = THIS_MODULE,
};
-static char *aoe_nodename(struct device *dev)
+static char *aoe_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev));
}
@@ -288,7 +288,7 @@ aoechr_init(void)
unregister_chrdev(AOE_MAJOR, "aoechr");
return PTR_ERR(aoe_class);
}
- aoe_class->nodename = aoe_nodename;
+ aoe_class->devnode = aoe_devnode;
for (i = 0; i < ARRAY_SIZE(chardevs); ++i)
device_create(aoe_class, NULL,
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 95f11cdef20..fd5bb8ad59a 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2857,7 +2857,7 @@ static struct block_device_operations pktcdvd_ops = {
.media_changed = pkt_media_changed,
};
-static char *pktcdvd_nodename(struct gendisk *gd)
+static char *pktcdvd_devnode(struct gendisk *gd, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "pktcdvd/%s", gd->disk_name);
}
@@ -2914,7 +2914,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
disk->fops = &pktcdvd_ops;
disk->flags = GENHD_FL_REMOVABLE;
strcpy(disk->disk_name, pd->name);
- disk->nodename = pktcdvd_nodename;
+ disk->devnode = pktcdvd_devnode;
disk->private_data = pd;
disk->queue = blk_alloc_queue(GFP_KERNEL);
if (!disk->queue)
@@ -3070,7 +3070,7 @@ static const struct file_operations pkt_ctl_fops = {
static struct miscdevice pkt_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = DRIVER_NAME,
- .name = "pktcdvd/control",
+ .nodename = "pktcdvd/control",
.fops = &pkt_ctl_fops
};
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index fc93e2fc7c7..1573aebd54b 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -153,7 +153,7 @@ static const struct file_operations rng_chrdev_ops = {
static struct miscdevice rng_miscdev = {
.minor = RNG_MISCDEV_MINOR,
.name = RNG_MODULE_NAME,
- .devnode = "hwrng",
+ .nodename = "hwrng",
.fops = &rng_chrdev_ops,
};
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 0491cdf63f2..0aede1d6a9e 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -866,24 +866,25 @@ static const struct file_operations kmsg_fops = {
static const struct memdev {
const char *name;
+ mode_t mode;
const struct file_operations *fops;
struct backing_dev_info *dev_info;
} devlist[] = {
- [ 1] = { "mem", &mem_fops, &directly_mappable_cdev_bdi },
+ [1] = { "mem", 0, &mem_fops, &directly_mappable_cdev_bdi },
#ifdef CONFIG_DEVKMEM
- [ 2] = { "kmem", &kmem_fops, &directly_mappable_cdev_bdi },
+ [2] = { "kmem", 0, &kmem_fops, &directly_mappable_cdev_bdi },
#endif
- [ 3] = {"null", &null_fops, NULL },
+ [3] = { "null", 0666, &null_fops, NULL },
#ifdef CONFIG_DEVPORT
- [ 4] = { "port", &port_fops, NULL },
+ [4] = { "port", 0, &port_fops, NULL },
#endif
- [ 5] = { "zero", &zero_fops, &zero_bdi },
- [ 7] = { "full", &full_fops, NULL },
- [ 8] = { "random", &random_fops, NULL },
- [ 9] = { "urandom", &urandom_fops, NULL },
- [11] = { "kmsg", &kmsg_fops, NULL },
+ [5] = { "zero", 0666, &zero_fops, &zero_bdi },
+ [7] = { "full", 0666, &full_fops, NULL },
+ [8] = { "random", 0666, &random_fops, NULL },
+ [9] = { "urandom", 0666, &urandom_fops, NULL },
+ [11] = { "kmsg", 0, &kmsg_fops, NULL },
#ifdef CONFIG_CRASH_DUMP
- [12] = { "oldmem", &oldmem_fops, NULL },
+ [12] = { "oldmem", 0, &oldmem_fops, NULL },
#endif
};
@@ -920,6 +921,13 @@ static const struct file_operations memory_fops = {
.open = memory_open,
};
+static char *mem_devnode(struct device *dev, mode_t *mode)
+{
+ if (mode && devlist[MINOR(dev->devt)].mode)
+ *mode = devlist[MINOR(dev->devt)].mode;
+ return NULL;
+}
+
static struct class *mem_class;
static int __init chr_dev_init(void)
@@ -935,6 +943,7 @@ static int __init chr_dev_init(void)
printk("unable to get major %d for memory devs\n", MEM_MAJOR);
mem_class = class_create(THIS_MODULE, "mem");
+ mem_class->devnode = mem_devnode;
for (minor = 1; minor < ARRAY_SIZE(devlist); minor++) {
if (!devlist[minor].name)
continue;
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 62c99fa59e2..1ee27cc2342 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -263,12 +263,14 @@ int misc_deregister(struct miscdevice *misc)
EXPORT_SYMBOL(misc_register);
EXPORT_SYMBOL(misc_deregister);
-static char *misc_nodename(struct device *dev)
+static char *misc_devnode(struct device *dev, mode_t *mode)
{
struct miscdevice *c = dev_get_drvdata(dev);
- if (c->devnode)
- return kstrdup(c->devnode, GFP_KERNEL);
+ if (mode && c->mode)
+ *mode = c->mode;
+ if (c->nodename)
+ return kstrdup(c->nodename, GFP_KERNEL);
return NULL;
}
@@ -287,7 +289,7 @@ static int __init misc_init(void)
err = -EIO;
if (register_chrdev(MISC_MAJOR,"misc",&misc_fops))
goto fail_printk;
- misc_class->nodename = misc_nodename;
+ misc_class->devnode = misc_devnode;
return 0;
fail_printk:
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 40268db02e2..64acd05f71c 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -261,7 +261,7 @@ static const struct file_operations raw_ctl_fops = {
static struct cdev raw_cdev;
-static char *raw_nodename(struct device *dev)
+static char *raw_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));
}
@@ -289,7 +289,7 @@ static int __init raw_init(void)
ret = PTR_ERR(raw_class);
goto error_region;
}
- raw_class->nodename = raw_nodename;
+ raw_class->devnode = raw_devnode;
device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
return 0;
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a3afa0c387c..c70d9dabefa 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -3056,11 +3056,22 @@ void __init console_init(void)
}
}
+static char *tty_devnode(struct device *dev, mode_t *mode)
+{
+ if (!mode)
+ return NULL;
+ if (dev->devt == MKDEV(TTYAUX_MAJOR, 0) ||
+ dev->devt == MKDEV(TTYAUX_MAJOR, 2))
+ *mode = 0666;
+ return NULL;
+}
+
static int __init tty_class_init(void)
{
tty_class = class_create(THIS_MODULE, "tty");
if (IS_ERR(tty_class))
return PTR_ERR(tty_class);
+ tty_class->devnode = tty_devnode;
return 0;
}
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index f7a615b80c7..5301f226cb1 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -76,7 +76,7 @@ static ssize_t version_show(struct class *dev, char *buf)
CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
}
-static char *drm_nodename(struct device *dev)
+static char *drm_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev));
}
@@ -112,7 +112,7 @@ struct class *drm_sysfs_create(struct module *owner, char *name)
if (err)
goto err_out_class;
- class->nodename = drm_nodename;
+ class->devnode = drm_devnode;
return class;
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 4d1dc0cf140..8b6ee247bfe 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -852,14 +852,14 @@ static const struct file_operations hiddev_fops = {
#endif
};
-static char *hiddev_nodename(struct device *dev)
+static char *hiddev_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}
static struct usb_class_driver hiddev_class = {
.name = "hiddev%d",
- .nodename = hiddev_nodename,
+ .devnode = hiddev_devnode,
.fops = &hiddev_fops,
.minor_base = HIDDEV_MINOR_BASE,
};
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 851791d955f..556539d617a 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1265,14 +1265,14 @@ static struct device_type input_dev_type = {
.uevent = input_dev_uevent,
};
-static char *input_nodename(struct device *dev)
+static char *input_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "input/%s", dev_name(dev));
}
struct class input_class = {
.name = "input",
- .nodename = input_nodename,
+ .devnode = input_devnode,
};
EXPORT_SYMBOL_GPL(input_class);
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 7f77f18fcaf..a6794293158 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1532,7 +1532,7 @@ static const struct file_operations _ctl_fops = {
static struct miscdevice _dm_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = DM_NAME,
- .devnode = "mapper/control",
+ .nodename = "mapper/control",
.fops = &_ctl_fops
};
diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index 479dd05762a..94159b90f73 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/drivers/media/dvb/dvb-core/dvbdev.c
@@ -447,7 +447,7 @@ static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env)
return 0;
}
-static char *dvb_nodename(struct device *dev)
+static char *dvb_devnode(struct device *dev, mode_t *mode)
{
struct dvb_device *dvbdev = dev_get_drvdata(dev);
@@ -478,7 +478,7 @@ static int __init init_dvbdev(void)
goto error;
}
dvb_class->dev_uevent = dvb_uevent;
- dvb_class->nodename = dvb_nodename;
+ dvb_class->devnode = dvb_devnode;
return 0;
error:
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 3f5d28851aa..d3ee1994b02 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1370,7 +1370,7 @@ static const struct file_operations tun_fops = {
static struct miscdevice tun_miscdev = {
.minor = TUN_MINOR,
.name = "tun",
- .devnode = "net/tun",
+ .nodename = "net/tun",
.fops = &tun_fops,
};
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index 26c09f0257d..9bc112ee780 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -1057,14 +1057,14 @@ static const struct file_operations usblp_fops = {
.release = usblp_release,
};
-static char *usblp_nodename(struct device *dev)
+static char *usblp_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}
static struct usb_class_driver usblp_class = {
.name = "lp%d",
- .nodename = usblp_nodename,
+ .devnode = usblp_devnode,
.fops = &usblp_fops,
.minor_base = USBLP_MINOR_BASE,
};
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 5cef88929b3..222ee07ea68 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -67,14 +67,14 @@ static struct usb_class {
struct class *class;
} *usb_class;
-static char *usb_nodename(struct device *dev)
+static char *usb_devnode(struct device *dev, mode_t *mode)
{
struct usb_class_driver *drv;
drv = dev_get_drvdata(dev);
- if (!drv || !drv->nodename)
+ if (!drv || !drv->devnode)
return NULL;
- return drv->nodename(dev);
+ return drv->devnode(dev, mode);
}
static int init_usb_class(void)
@@ -100,7 +100,7 @@ static int init_usb_class(void)
kfree(usb_class);
usb_class = NULL;
}
- usb_class->class->nodename = usb_nodename;
+ usb_class->class->devnode = usb_devnode;
exit:
return result;
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index a26f73880c3..43ee943d757 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -311,7 +311,7 @@ static struct dev_pm_ops usb_device_pm_ops = {
#endif /* CONFIG_PM */
-static char *usb_nodename(struct device *dev)
+static char *usb_devnode(struct device *dev, mode_t *mode)
{
struct usb_device *usb_dev;
@@ -324,7 +324,7 @@ struct device_type usb_device_type = {
.name = "usb_device",
.release = usb_release_dev,
.uevent = usb_dev_uevent,
- .nodename = usb_nodename,
+ .devnode = usb_devnode,
.pm = &usb_device_pm_ops,
};
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 90e1a8dedfa..e75bb87ee92 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -727,7 +727,7 @@ static const struct file_operations iowarrior_fops = {
.poll = iowarrior_poll,
};
-static char *iowarrior_nodename(struct device *dev)
+static char *iowarrior_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}
@@ -738,7 +738,7 @@ static char *iowarrior_nodename(struct device *dev)
*/
static struct usb_class_driver iowarrior_class = {
.name = "iowarrior%d",
- .nodename = iowarrior_nodename,
+ .devnode = iowarrior_devnode,
.fops = &iowarrior_fops,
.minor_base = IOWARRIOR_MINOR_BASE,
};
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index c1e2433f640..97efeaec4d5 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -266,7 +266,7 @@ static const struct file_operations tower_fops = {
.llseek = tower_llseek,
};
-static char *legousbtower_nodename(struct device *dev)
+static char *legousbtower_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}
@@ -277,7 +277,7 @@ static char *legousbtower_nodename(struct device *dev)
*/
static struct usb_class_driver tower_class = {
.name = "legousbtower%d",
- .nodename = legousbtower_nodename,
+ .devnode = legousbtower_devnode,
.fops = &tower_fops,
.minor_base = LEGO_USB_TOWER_MINOR_BASE,
};
diff --git a/include/linux/device.h b/include/linux/device.h
index 847b763e40e..aca31bf7d8e 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -193,7 +193,7 @@ struct class {
struct kobject *dev_kobj;
int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
- char *(*nodename)(struct device *dev);
+ char *(*devnode)(struct device *dev, mode_t *mode);
void (*class_release)(struct class *class);
void (*dev_release)(struct device *dev);
@@ -298,7 +298,7 @@ struct device_type {
const char *name;
const struct attribute_group **groups;
int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
- char *(*nodename)(struct device *dev);
+ char *(*devnode)(struct device *dev, mode_t *mode);
void (*release)(struct device *dev);
const struct dev_pm_ops *pm;
@@ -487,7 +487,8 @@ extern struct device *device_find_child(struct device *dev, void *data,
extern int device_rename(struct device *dev, char *new_name);
extern int device_move(struct device *dev, struct device *new_parent,
enum dpm_order dpm_order);
-extern const char *device_get_nodename(struct device *dev, const char **tmp);
+extern const char *device_get_devnode(struct device *dev,
+ mode_t *mode, const char **tmp);
extern void *dev_get_drvdata(const struct device *dev);
extern void dev_set_drvdata(struct device *dev, void *data);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 44263cb2712..109d179adb9 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -142,7 +142,7 @@ struct gendisk {
* disks that can't be partitioned. */
char disk_name[DISK_NAME_LEN]; /* name of major driver */
- char *(*nodename)(struct gendisk *gd);
+ char *(*devnode)(struct gendisk *gd, mode_t *mode);
/* Array of pointers to partitions indexed by partno.
* Protected with matching bdev lock but stat and other
* non-critical accesses use RCU. Always access through
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 05211774462..adaf3c15e44 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -41,7 +41,8 @@ struct miscdevice {
struct list_head list;
struct device *parent;
struct device *this_device;
- const char *devnode;
+ const char *nodename;
+ mode_t mode;
};
extern int misc_register(struct miscdevice * misc);
diff --git a/include/linux/usb.h b/include/linux/usb.h
index b1e3c2fbfe1..a8fe05f224e 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -922,7 +922,7 @@ extern struct bus_type usb_bus_type;
/**
* struct usb_class_driver - identifies a USB driver that wants to use the USB major number
* @name: the usb class device name for this driver. Will show up in sysfs.
- * @nodename: Callback to provide a naming hint for a possible
+ * @devnode: Callback to provide a naming hint for a possible
* device node to create.
* @fops: pointer to the struct file_operations of this driver.
* @minor_base: the start of the minor range for this driver.
@@ -933,7 +933,7 @@ extern struct bus_type usb_bus_type;
*/
struct usb_class_driver {
char *name;
- char *(*nodename)(struct device *dev);
+ char *(*devnode)(struct device *dev, mode_t *mode);
const struct file_operations *fops;
int minor_base;
};
diff --git a/sound/sound_core.c b/sound/sound_core.c
index bb4b88e606b..49c99818659 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -29,7 +29,7 @@ MODULE_DESCRIPTION("Core sound module");
MODULE_AUTHOR("Alan Cox");
MODULE_LICENSE("GPL");
-static char *sound_nodename(struct device *dev)
+static char *sound_devnode(struct device *dev, mode_t *mode)
{
if (MAJOR(dev->devt) == SOUND_MAJOR)
return NULL;
@@ -50,7 +50,7 @@ static int __init init_soundcore(void)
return PTR_ERR(sound_class);
}
- sound_class->nodename = sound_nodename;
+ sound_class->devnode = sound_devnode;
return 0;
}