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Diffstat (limited to 'fs/nfsctl.c')
-rw-r--r--fs/nfsctl.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/fs/nfsctl.c b/fs/nfsctl.c
deleted file mode 100644
index bf9cbd242dd..00000000000
--- a/fs/nfsctl.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * fs/nfsctl.c
- *
- * This should eventually move to userland.
- *
- */
-#include <linux/types.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/nfsd/syscall.h>
-#include <linux/cred.h>
-#include <linux/sched.h>
-#include <linux/linkage.h>
-#include <linux/namei.h>
-#include <linux/mount.h>
-#include <linux/syscalls.h>
-#include <asm/uaccess.h>
-
-/*
- * open a file on nfsd fs
- */
-
-static struct file *do_open(char *name, int flags)
-{
- struct nameidata nd;
- struct vfsmount *mnt;
- int error;
-
- mnt = do_kern_mount("nfsd", 0, "nfsd", NULL);
- if (IS_ERR(mnt))
- return (struct file *)mnt;
-
- error = vfs_path_lookup(mnt->mnt_root, mnt, name, 0, &nd);
- mntput(mnt); /* drop do_kern_mount reference */
- if (error)
- return ERR_PTR(error);
-
- if (flags == O_RDWR)
- error = may_open(&nd.path, MAY_READ|MAY_WRITE, flags);
- else
- error = may_open(&nd.path, MAY_WRITE, flags);
-
- if (!error)
- return dentry_open(nd.path.dentry, nd.path.mnt, flags,
- current_cred());
-
- path_put(&nd.path);
- return ERR_PTR(error);
-}
-
-static struct {
- char *name; int wsize; int rsize;
-} map[] = {
- [NFSCTL_SVC] = {
- .name = ".svc",
- .wsize = sizeof(struct nfsctl_svc)
- },
- [NFSCTL_ADDCLIENT] = {
- .name = ".add",
- .wsize = sizeof(struct nfsctl_client)
- },
- [NFSCTL_DELCLIENT] = {
- .name = ".del",
- .wsize = sizeof(struct nfsctl_client)
- },
- [NFSCTL_EXPORT] = {
- .name = ".export",
- .wsize = sizeof(struct nfsctl_export)
- },
- [NFSCTL_UNEXPORT] = {
- .name = ".unexport",
- .wsize = sizeof(struct nfsctl_export)
- },
- [NFSCTL_GETFD] = {
- .name = ".getfd",
- .wsize = sizeof(struct nfsctl_fdparm),
- .rsize = NFS_FHSIZE
- },
- [NFSCTL_GETFS] = {
- .name = ".getfs",
- .wsize = sizeof(struct nfsctl_fsparm),
- .rsize = sizeof(struct knfsd_fh)
- },
-};
-
-SYSCALL_DEFINE3(nfsservctl, int, cmd, struct nfsctl_arg __user *, arg,
- void __user *, res)
-{
- struct file *file;
- void __user *p = &arg->u;
- int version;
- int err;
-
- if (copy_from_user(&version, &arg->ca_version, sizeof(int)))
- return -EFAULT;
-
- if (version != NFSCTL_VERSION)
- return -EINVAL;
-
- if (cmd < 0 || cmd >= ARRAY_SIZE(map) || !map[cmd].name)
- return -EINVAL;
-
- file = do_open(map[cmd].name, map[cmd].rsize ? O_RDWR : O_WRONLY);
- if (IS_ERR(file))
- return PTR_ERR(file);
- err = file->f_op->write(file, p, map[cmd].wsize, &file->f_pos);
- if (err >= 0 && map[cmd].rsize)
- err = file->f_op->read(file, res, map[cmd].rsize, &file->f_pos);
- if (err >= 0)
- err = 0;
- fput(file);
- return err;
-}