if (strncmp(path, fs_path, strlen(fs_path)) != 0) {
dprintk("%s: path %s does not begin with fsroot %s\n",
- __FUNCTION__, path, fs_path);
+ __func__, path, fs_path);
return -ENOENT;
}
return 0;
}
-/*
- * Check if the string represents a "valid" IPv4 address
- */
-static inline int valid_ipaddr4(const char *buf)
+static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
+ char *page, char *page2,
+ const struct nfs4_fs_location *location)
{
- int rc, count, in[4];
-
- rc = sscanf(buf, "%d.%d.%d.%d", &in[0], &in[1], &in[2], &in[3]);
- if (rc != 4)
- return -EINVAL;
- for (count = 0; count < 4; count++) {
- if (in[count] > 255)
- return -EINVAL;
+ struct vfsmount *mnt = ERR_PTR(-ENOENT);
+ char *mnt_path;
+ int page2len;
+ unsigned int s;
+
+ mnt_path = nfs4_pathname_string(&location->rootpath, page2, PAGE_SIZE);
+ if (IS_ERR(mnt_path))
+ return mnt;
+ mountdata->mnt_path = mnt_path;
+ page2 += strlen(mnt_path) + 1;
+ page2len = PAGE_SIZE - strlen(mnt_path) - 1;
+
+ for (s = 0; s < location->nservers; s++) {
+ const struct nfs4_string *buf = &location->servers[s];
+ struct sockaddr_storage addr;
+
+ if (buf->len <= 0 || buf->len >= PAGE_SIZE)
+ continue;
+
+ mountdata->addr = (struct sockaddr *)&addr;
+
+ if (memchr(buf->data, IPV6_SCOPE_DELIMITER, buf->len))
+ continue;
+ nfs_parse_ip_address(buf->data, buf->len,
+ mountdata->addr, &mountdata->addrlen);
+ if (mountdata->addr->sa_family == AF_UNSPEC)
+ continue;
+ nfs_set_port(mountdata->addr, NFS_PORT);
+
+ strncpy(page2, buf->data, page2len);
+ page2[page2len] = '\0';
+ mountdata->hostname = page2;
+
+ snprintf(page, PAGE_SIZE, "%s:%s",
+ mountdata->hostname,
+ mountdata->mnt_path);
+
+ mnt = vfs_kern_mount(&nfs4_referral_fs_type, 0, page, mountdata);
+ if (!IS_ERR(mnt))
+ break;
}
- return 0;
+ return mnt;
}
/**
* nfs_follow_referral - set up mountpoint when hitting a referral on moved error
* @mnt_parent - mountpoint of parent directory
* @dentry - parent directory
- * @fspath - fs path returned in fs_locations
- * @mntpath - mount path to new server
- * @hostname - hostname of new server
- * @addr - host addr of new server
+ * @locations - array of NFSv4 server location information
*
*/
static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
.authflavor = NFS_SB(mnt_parent->mnt_sb)->client->cl_auth->au_flavor,
};
char *page = NULL, *page2 = NULL;
- char *devname;
- int loc, s, error;
+ int loc, error;
if (locations == NULL || locations->nlocations <= 0)
goto out;
- dprintk("%s: referral at %s/%s\n", __FUNCTION__,
+ dprintk("%s: referral at %s/%s\n", __func__,
dentry->d_parent->d_name.name, dentry->d_name.name);
page = (char *) __get_free_page(GFP_USER);
goto out;
}
- devname = nfs_devname(mnt_parent, dentry, page, PAGE_SIZE);
- if (IS_ERR(devname)) {
- mnt = (struct vfsmount *)devname;
- goto out;
- }
-
- loc = 0;
- while (loc < locations->nlocations && IS_ERR(mnt)) {
+ for (loc = 0; loc < locations->nlocations; loc++) {
const struct nfs4_fs_location *location = &locations->locations[loc];
- char *mnt_path;
if (location == NULL || location->nservers <= 0 ||
- location->rootpath.ncomponents == 0) {
- loc++;
+ location->rootpath.ncomponents == 0)
continue;
- }
- mnt_path = nfs4_pathname_string(&location->rootpath, page2, PAGE_SIZE);
- if (IS_ERR(mnt_path)) {
- loc++;
- continue;
- }
- mountdata.mnt_path = mnt_path;
-
- s = 0;
- while (s < location->nservers) {
- struct sockaddr_in addr = {};
-
- if (location->servers[s].len <= 0 ||
- valid_ipaddr4(location->servers[s].data) < 0) {
- s++;
- continue;
- }
-
- mountdata.hostname = location->servers[s].data;
- addr.sin_addr.s_addr = in_aton(mountdata.hostname);
- addr.sin_family = AF_INET;
- addr.sin_port = htons(NFS_PORT);
- mountdata.addr = &addr;
-
- mnt = vfs_kern_mount(&nfs4_referral_fs_type, 0, devname, &mountdata);
- if (!IS_ERR(mnt)) {
- break;
- }
- s++;
- }
- loc++;
+ mnt = try_location(&mountdata, page, page2, location);
+ if (!IS_ERR(mnt))
+ break;
}
out:
free_page((unsigned long) page);
free_page((unsigned long) page2);
- dprintk("%s: done\n", __FUNCTION__);
+ dprintk("%s: done\n", __func__);
return mnt;
}
int err;
/* BUG_ON(IS_ROOT(dentry)); */
- dprintk("%s: enter\n", __FUNCTION__);
+ dprintk("%s: enter\n", __func__);
page = alloc_page(GFP_KERNEL);
if (page == NULL)
parent = dget_parent(dentry);
dprintk("%s: getting locations for %s/%s\n",
- __FUNCTION__, parent->d_name.name, dentry->d_name.name);
+ __func__, parent->d_name.name, dentry->d_name.name);
err = nfs4_proc_fs_locations(parent->d_inode, &dentry->d_name, fs_locations, page);
dput(parent);
__free_page(page);
kfree(fs_locations);
out:
- dprintk("%s: done\n", __FUNCTION__);
+ dprintk("%s: done\n", __func__);
return mnt;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff