diff options
| -rw-r--r-- | drivers/xen/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/xen/Makefile | 2 | ||||
| -rw-r--r-- | drivers/xen/privcmd.c (renamed from drivers/xen/xenfs/privcmd.c) | 39 | ||||
| -rw-r--r-- | drivers/xen/privcmd.h | 3 | ||||
| -rw-r--r-- | drivers/xen/xenfs/Makefile | 2 | ||||
| -rw-r--r-- | drivers/xen/xenfs/super.c | 3 | ||||
| -rw-r--r-- | drivers/xen/xenfs/xenfs.h | 1 |
7 files changed, 53 insertions, 4 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 8795480c235..a1ced521cf7 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -86,6 +86,7 @@ config XEN_BACKEND config XENFS tristate "Xen filesystem" + select XEN_PRIVCMD default y help The xen filesystem provides a way for domains to share @@ -171,4 +172,10 @@ config XEN_PCIDEV_BACKEND xen-pciback.hide=(03:00.0)(04:00.0) If in doubt, say m. + +config XEN_PRIVCMD + tristate + depends on XEN + default m + endmenu diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 974fffdf22b..aa31337192c 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -19,7 +19,9 @@ obj-$(CONFIG_XEN_TMEM) += tmem.o obj-$(CONFIG_SWIOTLB_XEN) += swiotlb-xen.o obj-$(CONFIG_XEN_DOM0) += pci.o obj-$(CONFIG_XEN_PCIDEV_BACKEND) += xen-pciback/ +obj-$(CONFIG_XEN_PRIVCMD) += xen-privcmd.o xen-evtchn-y := evtchn.o xen-gntdev-y := gntdev.o xen-gntalloc-y := gntalloc.o +xen-privcmd-y := privcmd.o diff --git a/drivers/xen/xenfs/privcmd.c b/drivers/xen/privcmd.c index dbd3b16fd13..4e8d3da89ad 100644 --- a/drivers/xen/xenfs/privcmd.c +++ b/drivers/xen/privcmd.c @@ -7,6 +7,7 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/string.h> @@ -18,6 +19,7 @@ #include <linux/highmem.h> #include <linux/pagemap.h> #include <linux/seq_file.h> +#include <linux/miscdevice.h> #include <asm/pgalloc.h> #include <asm/pgtable.h> @@ -32,6 +34,10 @@ #include <xen/page.h> #include <xen/xen-ops.h> +#include "privcmd.h" + +MODULE_LICENSE("GPL"); + #ifndef HAVE_ARCH_PRIVCMD_MMAP static int privcmd_enforce_singleshot_mapping(struct vm_area_struct *vma); #endif @@ -394,7 +400,38 @@ static int privcmd_enforce_singleshot_mapping(struct vm_area_struct *vma) } #endif -const struct file_operations privcmd_file_ops = { +const struct file_operations xen_privcmd_fops = { + .owner = THIS_MODULE, .unlocked_ioctl = privcmd_ioctl, .mmap = privcmd_mmap, }; +EXPORT_SYMBOL_GPL(xen_privcmd_fops); + +static struct miscdevice privcmd_dev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "xen/privcmd", + .fops = &xen_privcmd_fops, +}; + +static int __init privcmd_init(void) +{ + int err; + + if (!xen_domain()) + return -ENODEV; + + err = misc_register(&privcmd_dev); + if (err != 0) { + printk(KERN_ERR "Could not register Xen privcmd device\n"); + return err; + } + return 0; +} + +static void __exit privcmd_exit(void) +{ + misc_deregister(&privcmd_dev); +} + +module_init(privcmd_init); +module_exit(privcmd_exit); diff --git a/drivers/xen/privcmd.h b/drivers/xen/privcmd.h new file mode 100644 index 00000000000..14facaeed36 --- /dev/null +++ b/drivers/xen/privcmd.h @@ -0,0 +1,3 @@ +#include <linux/fs.h> + +extern const struct file_operations xen_privcmd_fops; diff --git a/drivers/xen/xenfs/Makefile b/drivers/xen/xenfs/Makefile index 4fde9440fe1..5d45ff13cc0 100644 --- a/drivers/xen/xenfs/Makefile +++ b/drivers/xen/xenfs/Makefile @@ -1,4 +1,4 @@ obj-$(CONFIG_XENFS) += xenfs.o -xenfs-y = super.o xenbus.o privcmd.o +xenfs-y = super.o xenbus.o xenfs-$(CONFIG_XEN_DOM0) += xenstored.o diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c index 1aa38971984..a55fbf9a151 100644 --- a/drivers/xen/xenfs/super.c +++ b/drivers/xen/xenfs/super.c @@ -16,6 +16,7 @@ #include <xen/xen.h> #include "xenfs.h" +#include "../privcmd.h" #include <asm/xen/hypervisor.h> @@ -84,7 +85,7 @@ static int xenfs_fill_super(struct super_block *sb, void *data, int silent) [1] = {}, { "xenbus", &xenbus_file_ops, S_IRUSR|S_IWUSR }, { "capabilities", &capabilities_file_ops, S_IRUGO }, - { "privcmd", &privcmd_file_ops, S_IRUSR|S_IWUSR }, + { "privcmd", &xen_privcmd_fops, S_IRUSR|S_IWUSR }, {""}, }; int rc; diff --git a/drivers/xen/xenfs/xenfs.h b/drivers/xen/xenfs/xenfs.h index b68aa620000..5056306e7aa 100644 --- a/drivers/xen/xenfs/xenfs.h +++ b/drivers/xen/xenfs/xenfs.h @@ -2,7 +2,6 @@ #define _XENFS_XENBUS_H extern const struct file_operations xenbus_file_ops; -extern const struct file_operations privcmd_file_ops; extern const struct file_operations xsd_kva_file_ops; extern const struct file_operations xsd_port_file_ops; |