struct svc_rqst *rqstp;
int (*callback_svc)(void *vrqstp);
struct nfs_callback_data *cb_info = &nfs_callback_info[minorversion];
- char svc_name[12];
int ret;
nfs_callback_bc_serv(minorversion, xprt, serv);
svc_sock_update_bufs(serv);
- sprintf(svc_name, "nfsv4.%u-svc", minorversion);
cb_info->serv = serv;
cb_info->rqst = rqstp;
- cb_info->task = kthread_run(callback_svc, cb_info->rqst, svc_name);
+ cb_info->task = kthread_run(callback_svc, cb_info->rqst,
+ "nfsv4.%u-svc", minorversion);
if (IS_ERR(cb_info->task)) {
ret = PTR_ERR(cb_info->task);
svc_exit_thread(cb_info->rqst);
ret = nfs4_callback_up_net(serv, net);
break;
case 1:
+ case 2:
ret = nfs41_callback_up_net(serv, net);
break;
default:
#include <linux/pagevec.h>
#include <linux/namei.h>
#include <linux/mount.h>
+#include <linux/swap.h>
#include <linux/sched.h>
#include <linux/kmemleak.h>
#include <linux/xattr.h>
static int nfs_opendir(struct inode *, struct file *);
static int nfs_closedir(struct inode *, struct file *);
-static int nfs_readdir(struct file *, void *, filldir_t);
+static int nfs_readdir(struct file *, struct dir_context *);
static int nfs_fsync_dir(struct file *, loff_t, loff_t, int);
static loff_t nfs_llseek_dir(struct file *, loff_t, int);
static void nfs_readdir_clear_array(struct page*);
const struct file_operations nfs_dir_operations = {
.llseek = nfs_llseek_dir,
.read = generic_read_dir,
- .readdir = nfs_readdir,
+ .iterate = nfs_readdir,
.open = nfs_opendir,
.release = nfs_closedir,
.fsync = nfs_fsync_dir,
typedef struct {
struct file *file;
struct page *page;
+ struct dir_context *ctx;
unsigned long page_index;
u64 *dir_cookie;
u64 last_cookie;
static
int nfs_readdir_search_for_pos(struct nfs_cache_array *array, nfs_readdir_descriptor_t *desc)
{
- loff_t diff = desc->file->f_pos - desc->current_index;
+ loff_t diff = desc->ctx->pos - desc->current_index;
unsigned int index;
if (diff < 0)
|| (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))) {
ctx->duped = 0;
ctx->attr_gencount = nfsi->attr_gencount;
- } else if (new_pos < desc->file->f_pos) {
+ } else if (new_pos < desc->ctx->pos) {
if (ctx->duped > 0
&& ctx->dup_cookie == *desc->dir_cookie) {
if (printk_ratelimit()) {
ctx->dup_cookie = *desc->dir_cookie;
ctx->duped = -1;
}
- desc->file->f_pos = new_pos;
+ desc->ctx->pos = new_pos;
desc->cache_entry_index = i;
return 0;
}
}
static
-bool nfs_use_readdirplus(struct inode *dir, struct file *filp)
+bool nfs_use_readdirplus(struct inode *dir, struct dir_context *ctx)
{
if (!nfs_server_capable(dir, NFS_CAP_READDIRPLUS))
return false;
if (test_and_clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags))
return true;
- if (filp->f_pos == 0)
+ if (ctx->pos == 0)
return true;
return false;
}
struct dentry *alias;
struct inode *dir = parent->d_inode;
struct inode *inode;
+ int status;
if (filename.name[0] == '.') {
if (filename.len == 1)
dentry = d_lookup(parent, &filename);
if (dentry != NULL) {
if (nfs_same_file(dentry, entry)) {
- nfs_refresh_inode(dentry->d_inode, entry->fattr);
+ status = nfs_refresh_inode(dentry->d_inode, entry->fattr);
+ if (!status)
+ nfs_setsecurity(dentry->d_inode, entry->fattr, entry->label);
goto out;
} else {
if (d_invalidate(dentry) != 0)
if (dentry == NULL)
return;
- inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr);
+ inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr, entry->label);
if (IS_ERR(inode))
goto out;
if (entry.fh == NULL || entry.fattr == NULL)
goto out;
+ entry.label = nfs4_label_alloc(NFS_SERVER(inode), GFP_NOWAIT);
+ if (IS_ERR(entry.label)) {
+ status = PTR_ERR(entry.label);
+ goto out;
+ }
+
array = nfs_readdir_get_array(page);
if (IS_ERR(array)) {
status = PTR_ERR(array);
- goto out;
+ goto out_label_free;
}
memset(array, 0, sizeof(struct nfs_cache_array));
array->eof_index = -1;
nfs_readdir_free_large_page(pages_ptr, pages, array_size);
out_release_array:
nfs_readdir_release_array(page);
+ out_label_free:
+ nfs4_label_free(entry.label);
out:
nfs_free_fattr(entry.fattr);
nfs_free_fhandle(entry.fh);
* Once we've found the start of the dirent within a page: fill 'er up...
*/
static
-int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
- filldir_t filldir)
+int nfs_do_filldir(nfs_readdir_descriptor_t *desc)
{
struct file *file = desc->file;
int i = 0;
struct nfs_cache_array_entry *ent;
ent = &array->array[i];
- if (filldir(dirent, ent->string.name, ent->string.len,
- file->f_pos, nfs_compat_user_ino64(ent->ino),
- ent->d_type) < 0) {
+ if (!dir_emit(desc->ctx, ent->string.name, ent->string.len,
+ nfs_compat_user_ino64(ent->ino), ent->d_type)) {
desc->eof = 1;
break;
}
- file->f_pos++;
+ desc->ctx->pos++;
if (i < (array->size-1))
*desc->dir_cookie = array->array[i+1].cookie;
else
* directory in the page cache by the time we get here.
*/
static inline
-int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
- filldir_t filldir)
+int uncached_readdir(nfs_readdir_descriptor_t *desc)
{
struct page *page = NULL;
int status;
if (status < 0)
goto out_release;
- status = nfs_do_filldir(desc, dirent, filldir);
+ status = nfs_do_filldir(desc);
out:
dfprintk(DIRCACHE, "NFS: %s: returns %d\n",
last cookie cache takes care of the common case of reading the
whole directory.
*/
-static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
+static int nfs_readdir(struct file *file, struct dir_context *ctx)
{
- struct dentry *dentry = filp->f_path.dentry;
+ struct dentry *dentry = file->f_path.dentry;
struct inode *inode = dentry->d_inode;
nfs_readdir_descriptor_t my_desc,
*desc = &my_desc;
- struct nfs_open_dir_context *dir_ctx = filp->private_data;
+ struct nfs_open_dir_context *dir_ctx = file->private_data;
int res;
dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
- (long long)filp->f_pos);
+ (long long)ctx->pos);
nfs_inc_stats(inode, NFSIOS_VFSGETDENTS);
/*
- * filp->f_pos points to the dirent entry number.
+ * ctx->pos points to the dirent entry number.
* *desc->dir_cookie has the cookie for the next entry. We have
* to either find the entry with the appropriate number or
* revalidate the cookie.
*/
memset(desc, 0, sizeof(*desc));
- desc->file = filp;
+ desc->file = file;
+ desc->ctx = ctx;
desc->dir_cookie = &dir_ctx->dir_cookie;
desc->decode = NFS_PROTO(inode)->decode_dirent;
- desc->plus = nfs_use_readdirplus(inode, filp) ? 1 : 0;
+ desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0;
nfs_block_sillyrename(dentry);
- res = nfs_revalidate_mapping(inode, filp->f_mapping);
+ res = nfs_revalidate_mapping(inode, file->f_mapping);
if (res < 0)
goto out;
/* This means either end of directory */
if (*desc->dir_cookie && desc->eof == 0) {
/* Or that the server has 'lost' a cookie */
- res = uncached_readdir(desc, dirent, filldir);
+ res = uncached_readdir(desc);
if (res == 0)
continue;
}
if (res < 0)
break;
- res = nfs_do_filldir(desc, dirent, filldir);
+ res = nfs_do_filldir(desc);
if (res < 0)
break;
} while (!desc->eof);
struct dentry *parent;
struct nfs_fh *fhandle = NULL;
struct nfs_fattr *fattr = NULL;
+ struct nfs4_label *label = NULL;
int error;
if (flags & LOOKUP_RCU)
if (fhandle == NULL || fattr == NULL)
goto out_error;
- error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
+ label = nfs4_label_alloc(NFS_SERVER(inode), GFP_NOWAIT);
+ if (IS_ERR(label))
+ goto out_error;
+
+ error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
if (error)
goto out_bad;
if (nfs_compare_fh(NFS_FH(inode), fhandle))
if ((error = nfs_refresh_inode(inode, fattr)) != 0)
goto out_bad;
+ nfs_setsecurity(inode, fattr, label);
+
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
+ nfs4_label_free(label);
+
out_set_verifier:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_valid:
out_bad:
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
+ nfs4_label_free(label);
nfs_mark_for_revalidate(dir);
if (inode && S_ISDIR(inode->i_mode)) {
/* Purge readdir caches. */
out_error:
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
+ nfs4_label_free(label);
dput(parent);
dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) lookup returned error %d\n",
__func__, dentry->d_parent->d_name.name,
struct inode *inode = NULL;
struct nfs_fh *fhandle = NULL;
struct nfs_fattr *fattr = NULL;
+ struct nfs4_label *label = NULL;
int error;
dfprintk(VFS, "NFS: lookup(%s/%s)\n",
if (fhandle == NULL || fattr == NULL)
goto out;
+ label = nfs4_label_alloc(NFS_SERVER(dir), GFP_NOWAIT);
+ if (IS_ERR(label))
+ goto out;
+
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
- error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
+ error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
if (error == -ENOENT)
goto no_entry;
if (error < 0) {
res = ERR_PTR(error);
goto out_unblock_sillyrename;
}
- inode = nfs_fhget(dentry->d_sb, fhandle, fattr);
+ inode = nfs_fhget(dentry->d_sb, fhandle, fattr, label);
res = ERR_CAST(inode);
if (IS_ERR(res))
goto out_unblock_sillyrename;
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_unblock_sillyrename:
nfs_unblock_sillyrename(parent);
+ nfs4_label_free(label);
out:
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
{
int err;
- if (ctx->dentry != dentry) {
- dput(ctx->dentry);
- ctx->dentry = dget(dentry);
- }
-
- /* If the open_intent is for execute, we have an extra check to make */
- if (ctx->mode & FMODE_EXEC) {
- err = nfs_may_open(dentry->d_inode, ctx->cred, open_flags);
- if (err < 0)
- goto out;
- }
-
err = finish_open(file, dentry, do_open, opened);
if (err)
goto out;
nfs_block_sillyrename(dentry->d_parent);
inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr);
- d_drop(dentry);
+ nfs_unblock_sillyrename(dentry->d_parent);
if (IS_ERR(inode)) {
- nfs_unblock_sillyrename(dentry->d_parent);
put_nfs_open_context(ctx);
err = PTR_ERR(inode);
switch (err) {
case -ENOENT:
+ d_drop(dentry);
d_add(dentry, NULL);
break;
case -EISDIR:
}
goto out;
}
- res = d_add_unique(dentry, inode);
- if (res != NULL)
- dentry = res;
-
- nfs_unblock_sillyrename(dentry->d_parent);
- nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
-
- err = nfs_finish_open(ctx, dentry, file, open_flags, opened);
- dput(res);
+ err = nfs_finish_open(ctx, ctx->dentry, file, open_flags, opened);
out:
return err;
* Code common to create, mkdir, and mknod.
*/
int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle,
- struct nfs_fattr *fattr)
+ struct nfs_fattr *fattr,
+ struct nfs4_label *label)
{
struct dentry *parent = dget_parent(dentry);
struct inode *dir = parent->d_inode;
if (dentry->d_inode)
goto out;
if (fhandle->size == 0) {
- error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
+ error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, NULL);
if (error)
goto out_error;
}
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
if (!(fattr->valid & NFS_ATTR_FATTR)) {
struct nfs_server *server = NFS_SB(dentry->d_sb);
- error = server->nfs_client->rpc_ops->getattr(server, fhandle, fattr);
+ error = server->nfs_client->rpc_ops->getattr(server, fhandle, fattr, NULL);
if (error < 0)
goto out_error;
}
- inode = nfs_fhget(dentry->d_sb, fhandle, fattr);
+ inode = nfs_fhget(dentry->d_sb, fhandle, fattr, label);
error = PTR_ERR(inode);
if (IS_ERR(inode))
goto out_error;
dir->i_ino, dentry->d_name.name);
spin_lock(&dentry->d_lock);
- if (dentry->d_count > 1) {
+ if (d_count(dentry) > 1) {
spin_unlock(&dentry->d_lock);
/* Start asynchronous writeout of the inode */
write_inode_now(dentry->d_inode, 0);
*/
int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
{
- struct pagevec lru_pvec;
struct page *page;
char *kaddr;
struct iattr attr;
* No big deal if we can't add this page to the page cache here.
* READLINK will get the missing page from the server if needed.
*/
- pagevec_init(&lru_pvec, 0);
- if (!add_to_page_cache(page, dentry->d_inode->i_mapping, 0,
+ if (!add_to_page_cache_lru(page, dentry->d_inode->i_mapping, 0,
GFP_KERNEL)) {
- pagevec_add(&lru_pvec, page);
- pagevec_lru_add_file(&lru_pvec);
SetPageUptodate(page);
unlock_page(page);
} else
dfprintk(VFS, "NFS: rename(%s/%s -> %s/%s, ct=%d)\n",
old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
new_dentry->d_parent->d_name.name, new_dentry->d_name.name,
- new_dentry->d_count);
+ d_count(new_dentry));
/*
* For non-directories, check whether the target is busy and if so,
rehash = new_dentry;
}
- if (new_dentry->d_count > 2) {
+ if (d_count(new_dentry) > 2) {
int err;
/* copy the target dentry's name */
#include "iostat.h"
#include "internal.h"
#include "fscache.h"
- #include "dns_resolve.h"
#include "pnfs.h"
#include "nfs.h"
#include "netns.h"
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
- freezable_schedule();
+ freezable_schedule_unsafe();
return 0;
}
EXPORT_SYMBOL_GPL(nfs_wait_bit_killable);
memset(NFS_I(inode)->cookieverf, 0, sizeof(NFS_I(inode)->cookieverf));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
nfs_fscache_invalidate(inode);
- } else {
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
- }
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_LABEL
+ | NFS_INO_INVALID_DATA
+ | NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_REVAL_PAGECACHE;
+ } else
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_LABEL
+ | NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_REVAL_PAGECACHE;
}
void nfs_zap_caches(struct inode *inode)
return 0;
}
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
+ struct nfs4_label *label)
+ {
+ int error;
+
+ if (label == NULL)
+ return;
+
+ if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL) == 0)
+ return;
+
+ if (NFS_SERVER(inode)->nfs_client->cl_minorversion < 2)
+ return;
+
+ if ((fattr->valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL) && inode->i_security) {
+ error = security_inode_notifysecctx(inode, label->label,
+ label->len);
+ if (error)
+ printk(KERN_ERR "%s() %s %d "
+ "security_inode_notifysecctx() %d\n",
+ __func__,
+ (char *)label->label,
+ label->len, error);
+ }
+ }
+
+ struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags)
+ {
+ struct nfs4_label *label = NULL;
+ int minor_version = server->nfs_client->cl_minorversion;
+
+ if (minor_version < 2)
+ return label;
+
+ if (!(server->caps & NFS_CAP_SECURITY_LABEL))
+ return label;
+
+ label = kzalloc(sizeof(struct nfs4_label), flags);
+ if (label == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ label->label = kzalloc(NFS4_MAXLABELLEN, flags);
+ if (label->label == NULL) {
+ kfree(label);
+ return ERR_PTR(-ENOMEM);
+ }
+ label->len = NFS4_MAXLABELLEN;
+
+ return label;
+ }
+ EXPORT_SYMBOL_GPL(nfs4_label_alloc);
+ #else
+ void inline nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
+ struct nfs4_label *label)
+ {
+ }
+ #endif
+ EXPORT_SYMBOL_GPL(nfs_setsecurity);
+
/*
* This is our front-end to iget that looks up inodes by file handle
* instead of inode number.
*/
struct inode *
- nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
+ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct nfs_find_desc desc = {
.fh = fh,
*/
inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
}
+
+ nfs_setsecurity(inode, fattr, label);
+
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
nfsi->access_cache = RB_ROOT;
unlock_new_inode(inode);
} else
nfs_refresh_inode(inode, fattr);
+ nfs_setsecurity(inode, fattr, label);
dprintk("NFS: nfs_fhget(%s/%Ld fh_crc=0x%08x ct=%d)\n",
inode->i_sb->s_id,
(long long)NFS_FILEID(inode),
NFS_PROTO(inode)->return_delegation(inode);
error = NFS_PROTO(inode)->setattr(dentry, fattr, attr);
if (error == 0)
- nfs_refresh_inode(inode, fattr);
+ error = nfs_refresh_inode(inode, fattr);
nfs_free_fattr(fattr);
out:
return error;
* Ensure that mmap has a recent RPC credential for use when writing out
* shared pages
*/
- void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx)
+ void nfs_inode_attach_open_context(struct nfs_open_context *ctx)
{
- struct inode *inode = file_inode(filp);
+ struct inode *inode = ctx->dentry->d_inode;
struct nfs_inode *nfsi = NFS_I(inode);
- filp->private_data = get_nfs_open_context(ctx);
spin_lock(&inode->i_lock);
list_add(&ctx->list, &nfsi->open_files);
spin_unlock(&inode->i_lock);
}
+ EXPORT_SYMBOL_GPL(nfs_inode_attach_open_context);
+
+ void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx)
+ {
+ filp->private_data = get_nfs_open_context(ctx);
+ if (list_empty(&ctx->list))
+ nfs_inode_attach_open_context(ctx);
+ }
EXPORT_SYMBOL_GPL(nfs_file_set_open_context);
/*
static void nfs_file_clear_open_context(struct file *filp)
{
- struct inode *inode = file_inode(filp);
struct nfs_open_context *ctx = nfs_file_open_context(filp);
if (ctx) {
+ struct inode *inode = ctx->dentry->d_inode;
+
filp->private_data = NULL;
spin_lock(&inode->i_lock);
list_move_tail(&ctx->list, &NFS_I(inode)->open_files);
__nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
int status = -ESTALE;
+ struct nfs4_label *label = NULL;
struct nfs_fattr *fattr = NULL;
struct nfs_inode *nfsi = NFS_I(inode);
goto out;
nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE);
- status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr);
+
+ label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
+ if (IS_ERR(label)) {
+ status = PTR_ERR(label);
+ goto out;
+ }
+
+ status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr, label);
if (status != 0) {
dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) getattr failed, error=%d\n",
inode->i_sb->s_id,
if (!S_ISDIR(inode->i_mode))
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
}
- goto out;
+ goto err_out;
}
status = nfs_refresh_inode(inode, fattr);
dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) refresh failed, error=%d\n",
inode->i_sb->s_id,
(long long)NFS_FILEID(inode), status);
- goto out;
+ goto err_out;
}
if (nfsi->cache_validity & NFS_INO_INVALID_ACL)
inode->i_sb->s_id,
(long long)NFS_FILEID(inode));
- out:
+ err_out:
+ nfs4_label_free(label);
+ out:
nfs_free_fattr(fattr);
return status;
}
*/
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
- if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
+ if (!(NFS_I(inode)->cache_validity &
+ (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL))
&& !nfs_attribute_cache_expired(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
spin_lock(&inode->i_lock);
status = nfs_post_op_update_inode_locked(inode, fattr);
spin_unlock(&inode->i_lock);
+
return status;
}
EXPORT_SYMBOL_GPL(nfs_post_op_update_inode);
inode->i_blocks = fattr->du.nfs2.blocks;
/* Update attrtimeo value if we're out of the unstable period */
- if (invalid & NFS_INO_INVALID_ATTR) {
+ if (invalid & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) {
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
}
}
invalid &= ~NFS_INO_INVALID_ATTR;
+ invalid &= ~NFS_INO_INVALID_LABEL;
/* Don't invalidate the data if we were to blame */
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
|| S_ISLNK(inode->i_mode)))
static int nfs_net_init(struct net *net)
{
nfs_clients_init(net);
- return nfs_dns_resolver_cache_init(net);
+ return 0;
}
static void nfs_net_exit(struct net *net)
{
- nfs_dns_resolver_cache_destroy(net);
nfs_cleanup_cb_ident_idr(net);
}
{
int err;
- err = nfs_dns_resolver_init();
- if (err < 0)
- goto out10;;
-
err = register_pernet_subsys(&nfs_net_ops);
if (err < 0)
goto out9;
out8:
unregister_pernet_subsys(&nfs_net_ops);
out9:
- nfs_dns_resolver_destroy();
- out10:
return err;
}
nfs_destroy_nfspagecache();
nfs_fscache_unregister();
unregister_pernet_subsys(&nfs_net_ops);
- nfs_dns_resolver_destroy();
#ifdef CONFIG_PROC_FS
rpc_proc_unregister(&init_net, "nfs");
#endif
res = rpc_call_sync(clnt, msg, flags);
if (res != -EJUKEBOX)
break;
- freezable_schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
+ freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
res = -ERESTARTSYS;
} while (!fatal_signal_pending(current));
return res;
*/
static int
nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
- struct nfs_fattr *fattr)
+ struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
static int
nfs3_proc_lookup(struct inode *dir, struct qstr *name,
- struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+ struct nfs_fh *fhandle, struct nfs_fattr *fattr,
+ struct nfs4_label *label)
{
struct nfs3_diropargs arg = {
.fh = NFS_FH(dir),
status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
nfs_post_op_update_inode(dir, data->res.dir_attr);
if (status == 0)
- status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+ status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
return status;
}
static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
- static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *);
- static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+ static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label);
+ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label);
static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
struct nfs_fattr *fattr, struct iattr *sattr,
- struct nfs4_state *state);
+ struct nfs4_state *state, struct nfs4_label *ilabel,
+ struct nfs4_label *olabel);
#ifdef CONFIG_NFS_V4_1
- static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *);
- static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *);
+ static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
+ struct rpc_cred *);
+ static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *,
+ struct rpc_cred *);
#endif
+
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ static inline struct nfs4_label *
+ nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
+ struct iattr *sattr, struct nfs4_label *label)
+ {
+ int err;
+
+ if (label == NULL)
+ return NULL;
+
+ if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
+ return NULL;
+
+ if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2)
+ return NULL;
+
+ err = security_dentry_init_security(dentry, sattr->ia_mode,
+ &dentry->d_name, (void **)&label->label, &label->len);
+ if (err == 0)
+ return label;
+
+ return NULL;
+ }
+ static inline void
+ nfs4_label_release_security(struct nfs4_label *label)
+ {
+ if (label)
+ security_release_secctx(label->label, label->len);
+ }
+ static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
+ {
+ if (label)
+ return server->attr_bitmask;
+
+ return server->attr_bitmask_nl;
+ }
+ #else
+ static inline struct nfs4_label *
+ nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
+ struct iattr *sattr, struct nfs4_label *l)
+ { return NULL; }
+ static inline void
+ nfs4_label_release_security(struct nfs4_label *label)
+ { return; }
+ static inline u32 *
+ nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
+ { return server->attr_bitmask; }
+ #endif
+
/* Prevent leaks of NFSv4 errors into userland */
static int nfs4_map_errors(int err)
{
| FATTR4_WORD1_SPACE_USED
| FATTR4_WORD1_TIME_ACCESS
| FATTR4_WORD1_TIME_METADATA
- | FATTR4_WORD1_TIME_MODIFY
+ | FATTR4_WORD1_TIME_MODIFY,
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ FATTR4_WORD2_SECURITY_LABEL
+ #endif
};
static const u32 nfs4_pnfs_open_bitmap[3] = {
| FATTR4_WORD0_FILEID,
};
- const u32 nfs4_statfs_bitmap[2] = {
+ const u32 nfs4_statfs_bitmap[3] = {
FATTR4_WORD0_FILES_AVAIL
| FATTR4_WORD0_FILES_FREE
| FATTR4_WORD0_FILES_TOTAL,
| FATTR4_WORD1_SPACE_TOTAL
};
- const u32 nfs4_pathconf_bitmap[2] = {
+ const u32 nfs4_pathconf_bitmap[3] = {
FATTR4_WORD0_MAXLINK
| FATTR4_WORD0_MAXNAME,
0
FATTR4_WORD2_LAYOUT_BLKSIZE
};
- const u32 nfs4_fs_locations_bitmap[2] = {
+ const u32 nfs4_fs_locations_bitmap[3] = {
FATTR4_WORD0_TYPE
| FATTR4_WORD0_CHANGE
| FATTR4_WORD0_SIZE
| FATTR4_WORD1_TIME_ACCESS
| FATTR4_WORD1_TIME_METADATA
| FATTR4_WORD1_TIME_MODIFY
- | FATTR4_WORD1_MOUNTED_ON_FILEID
+ | FATTR4_WORD1_MOUNTED_ON_FILEID,
};
static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
*timeout = NFS4_POLL_RETRY_MIN;
if (*timeout > NFS4_POLL_RETRY_MAX)
*timeout = NFS4_POLL_RETRY_MAX;
- freezable_schedule_timeout_killable(*timeout);
+ freezable_schedule_timeout_killable_unsafe(*timeout);
if (fatal_signal_pending(current))
res = -ERESTARTSYS;
*timeout <<= 1;
struct nfs4_string owner_name;
struct nfs4_string group_name;
struct nfs_fattr f_attr;
+ struct nfs4_label *f_label;
struct dentry *dir;
struct dentry *dentry;
struct nfs4_state_owner *owner;
static void nfs4_init_opendata_res(struct nfs4_opendata *p)
{
p->o_res.f_attr = &p->f_attr;
+ p->o_res.f_label = p->f_label;
p->o_res.seqid = p->o_arg.seqid;
p->c_res.seqid = p->c_arg.seqid;
p->o_res.server = p->o_arg.server;
static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
struct nfs4_state_owner *sp, fmode_t fmode, int flags,
const struct iattr *attrs,
+ struct nfs4_label *label,
enum open_claim_type4 claim,
gfp_t gfp_mask)
{
p = kzalloc(sizeof(*p), gfp_mask);
if (p == NULL)
goto err;
+
+ p->f_label = nfs4_label_alloc(server, gfp_mask);
+ if (IS_ERR(p->f_label))
+ goto err_free_p;
+
p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
if (p->o_arg.seqid == NULL)
- goto err_free;
+ goto err_free_label;
nfs_sb_active(dentry->d_sb);
p->dentry = dget(dentry);
p->dir = parent;
p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
p->o_arg.name = &dentry->d_name;
p->o_arg.server = server;
- p->o_arg.bitmask = server->attr_bitmask;
+ p->o_arg.bitmask = nfs4_bitmask(server, label);
p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
+ p->o_arg.label = label;
p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
switch (p->o_arg.claim) {
case NFS4_OPEN_CLAIM_NULL:
nfs4_init_opendata_res(p);
kref_init(&p->kref);
return p;
- err_free:
+
+ err_free_label:
+ nfs4_label_free(p->f_label);
+ err_free_p:
kfree(p);
err:
dput(parent);
if (p->state != NULL)
nfs4_put_open_state(p->state);
nfs4_put_state_owner(p->owner);
+
+ nfs4_label_free(p->f_label);
+
dput(p->dir);
dput(p->dentry);
nfs_sb_deactive(sb);
if (ret)
goto err;
+ nfs_setsecurity(inode, &data->f_attr, data->f_label);
+
if (data->o_res.delegation_type != 0)
nfs4_opendata_check_deleg(data, state);
update_open_stateid(state, &data->o_res.stateid, NULL,
ret = -EAGAIN;
if (!(data->f_attr.valid & NFS_ATTR_FATTR))
goto err;
- inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
+ inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label);
ret = PTR_ERR(inode);
if (IS_ERR(inode))
goto err;
struct nfs4_opendata *opendata;
opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
- NULL, claim, GFP_NOFS);
+ NULL, NULL, claim, GFP_NOFS);
if (opendata == NULL)
return ERR_PTR(-ENOMEM);
opendata->state = state;
return status;
}
if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
- _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
+ _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label);
return 0;
}
{
struct nfs_server *server = NFS_SERVER(state->inode);
nfs4_stateid *stateid = &state->stateid;
- int status;
+ struct nfs_delegation *delegation;
+ struct rpc_cred *cred = NULL;
+ int status = -NFS4ERR_BAD_STATEID;
/* If a state reset has been done, test_stateid is unneeded */
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
return;
- status = nfs41_test_stateid(server, stateid);
+ /* Get the delegation credential for use by test/free_stateid */
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(state->inode)->delegation);
+ if (delegation != NULL &&
+ nfs4_stateid_match(&delegation->stateid, stateid)) {
+ cred = get_rpccred(delegation->cred);
+ rcu_read_unlock();
+ status = nfs41_test_stateid(server, stateid, cred);
+ } else
+ rcu_read_unlock();
+
if (status != NFS_OK) {
/* Free the stateid unless the server explicitly
* informs us the stateid is unrecognized. */
if (status != -NFS4ERR_BAD_STATEID)
- nfs41_free_stateid(server, stateid);
+ nfs41_free_stateid(server, stateid, cred);
nfs_remove_bad_delegation(state->inode);
write_seqlock(&state->seqlock);
write_sequnlock(&state->seqlock);
clear_bit(NFS_DELEGATED_STATE, &state->flags);
}
+
+ if (cred != NULL)
+ put_rpccred(cred);
}
/**
{
struct nfs_server *server = NFS_SERVER(state->inode);
nfs4_stateid *stateid = &state->open_stateid;
+ struct rpc_cred *cred = state->owner->so_cred;
int status;
/* If a state reset has been done, test_stateid is unneeded */
(test_bit(NFS_O_RDWR_STATE, &state->flags) == 0))
return -NFS4ERR_BAD_STATEID;
- status = nfs41_test_stateid(server, stateid);
+ status = nfs41_test_stateid(server, stateid, cred);
if (status != NFS_OK) {
/* Free the stateid unless the server explicitly
* informs us the stateid is unrecognized. */
if (status != -NFS4ERR_BAD_STATEID)
- nfs41_free_stateid(server, stateid);
+ nfs41_free_stateid(server, stateid, cred);
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
fmode_t fmode,
int flags,
- struct nfs4_state **res)
+ struct nfs_open_context *ctx)
{
struct nfs4_state_owner *sp = opendata->owner;
struct nfs_server *server = sp->so_server;
+ struct dentry *dentry;
struct nfs4_state *state;
unsigned int seq;
int ret;
if (server->caps & NFS_CAP_POSIX_LOCK)
set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
+ dentry = opendata->dentry;
+ if (dentry->d_inode == NULL) {
+ /* FIXME: Is this d_drop() ever needed? */
+ d_drop(dentry);
+ dentry = d_add_unique(dentry, igrab(state->inode));
+ if (dentry == NULL) {
+ dentry = opendata->dentry;
+ } else if (dentry != ctx->dentry) {
+ dput(ctx->dentry);
+ ctx->dentry = dget(dentry);
+ }
+ nfs_set_verifier(dentry,
+ nfs_save_change_attribute(opendata->dir->d_inode));
+ }
+
ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
if (ret != 0)
goto out;
- if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
- nfs4_schedule_stateid_recovery(server, state);
- *res = state;
+ ctx->state = state;
+ if (dentry->d_inode == state->inode) {
+ nfs_inode_attach_open_context(ctx);
+ if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
+ nfs4_schedule_stateid_recovery(server, state);
+ }
out:
return ret;
}
* Returns a referenced nfs4_state
*/
static int _nfs4_do_open(struct inode *dir,
- struct dentry *dentry,
- fmode_t fmode,
+ struct nfs_open_context *ctx,
int flags,
struct iattr *sattr,
- struct rpc_cred *cred,
- struct nfs4_state **res,
- struct nfs4_threshold **ctx_th)
+ struct nfs4_label *label)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_opendata *opendata;
+ struct dentry *dentry = ctx->dentry;
+ struct rpc_cred *cred = ctx->cred;
+ struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
+ fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
+ struct nfs4_label *olabel = NULL;
int status;
/* Protect against reboot recovery conflicts */
if (dentry->d_inode)
claim = NFS4_OPEN_CLAIM_FH;
opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
- claim, GFP_KERNEL);
+ label, claim, GFP_KERNEL);
if (opendata == NULL)
goto err_put_state_owner;
+ if (label) {
+ olabel = nfs4_label_alloc(server, GFP_KERNEL);
+ if (IS_ERR(olabel)) {
+ status = PTR_ERR(olabel);
+ goto err_opendata_put;
+ }
+ }
+
if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
if (!opendata->f_attr.mdsthreshold)
- goto err_opendata_put;
+ goto err_free_label;
opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
}
if (dentry->d_inode != NULL)
opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
- status = _nfs4_open_and_get_state(opendata, fmode, flags, &state);
+ status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx);
if (status != 0)
- goto err_opendata_put;
+ goto err_free_label;
+ state = ctx->state;
if ((opendata->o_arg.open_flags & O_EXCL) &&
(opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
nfs_fattr_init(opendata->o_res.f_attr);
status = nfs4_do_setattr(state->inode, cred,
opendata->o_res.f_attr, sattr,
- state);
- if (status == 0)
+ state, label, olabel);
+ if (status == 0) {
nfs_setattr_update_inode(state->inode, sattr);
- nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+ nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+ nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
+ }
}
if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
kfree(opendata->f_attr.mdsthreshold);
opendata->f_attr.mdsthreshold = NULL;
+ nfs4_label_free(olabel);
+
nfs4_opendata_put(opendata);
nfs4_put_state_owner(sp);
- *res = state;
return 0;
+ err_free_label:
+ nfs4_label_free(olabel);
err_opendata_put:
kfree(opendata->f_attr.mdsthreshold);
nfs4_opendata_put(opendata);
err_put_state_owner:
nfs4_put_state_owner(sp);
out_err:
- *res = NULL;
return status;
}
static struct nfs4_state *nfs4_do_open(struct inode *dir,
- struct dentry *dentry,
- fmode_t fmode,
+ struct nfs_open_context *ctx,
int flags,
struct iattr *sattr,
- struct rpc_cred *cred,
- struct nfs4_threshold **ctx_th)
+ struct nfs4_label *label)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
- fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC;
do {
- status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred,
- &res, ctx_th);
+ status = _nfs4_do_open(dir, ctx, flags, sattr, label);
+ res = ctx->state;
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
struct nfs_fattr *fattr, struct iattr *sattr,
- struct nfs4_state *state)
+ struct nfs4_state *state, struct nfs4_label *ilabel,
+ struct nfs4_label *olabel)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_setattrargs arg = {
.iap = sattr,
.server = server,
.bitmask = server->attr_bitmask,
+ .label = ilabel,
};
struct nfs_setattrres res = {
.fattr = fattr,
+ .label = olabel,
.server = server,
};
struct rpc_message msg = {
bool truncate;
int status;
+ arg.bitmask = nfs4_bitmask(server, ilabel);
+ if (ilabel)
+ arg.bitmask = nfs4_bitmask(server, olabel);
+
nfs_fattr_init(fattr);
/* Servers should only apply open mode checks for file size changes */
static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
struct nfs_fattr *fattr, struct iattr *sattr,
- struct nfs4_state *state)
+ struct nfs4_state *state, struct nfs4_label *ilabel,
+ struct nfs4_label *olabel)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_exception exception = {
};
int err;
do {
- err = _nfs4_do_setattr(inode, cred, fattr, sattr, state);
+ err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel);
switch (err) {
case -NFS4ERR_OPENMODE:
if (!(sattr->ia_valid & ATTR_SIZE)) {
nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
{
struct nfs4_state *state;
+ struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
+
+ label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
/* Protect against concurrent sillydeletes */
- state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr,
- ctx->cred, &ctx->mdsthreshold);
+ state = nfs4_do_open(dir, ctx, open_flags, attr, label);
+
+ nfs4_label_release_security(label);
+
if (IS_ERR(state))
return ERR_CAST(state);
- ctx->state = state;
- return igrab(state->inode);
+ return state->inode;
}
static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
server->caps |= NFS_CAP_CTIME;
if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
server->caps |= NFS_CAP_MTIME;
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
+ server->caps |= NFS_CAP_SECURITY_LABEL;
+ #endif
+ memcpy(server->attr_bitmask_nl, res.attr_bitmask,
+ sizeof(server->attr_bitmask));
+ if (server->caps & NFS_CAP_SECURITY_LABEL) {
+ server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
+ res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
+ }
memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
+ u32 bitmask[3];
struct nfs4_lookup_root_arg args = {
- .bitmask = nfs4_fattr_bitmap,
+ .bitmask = bitmask,
};
struct nfs4_lookup_res res = {
.server = server,
.rpc_resp = &res,
};
+ bitmask[0] = nfs4_fattr_bitmap[0];
+ bitmask[1] = nfs4_fattr_bitmap[1];
+ /*
+ * Process the label in the upcoming getfattr
+ */
+ bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;
+
nfs_fattr_init(info->fattr);
return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}
{
int error;
struct nfs_fattr *fattr = info->fattr;
+ struct nfs4_label *label = NULL;
error = nfs4_server_capabilities(server, mntfh);
if (error < 0) {
return error;
}
- error = nfs4_proc_getattr(server, mntfh, fattr);
+ label = nfs4_label_alloc(server, GFP_KERNEL);
+ if (IS_ERR(label))
+ return PTR_ERR(label);
+
+ error = nfs4_proc_getattr(server, mntfh, fattr, label);
if (error < 0) {
dprintk("nfs4_get_root: getattr error = %d\n", -error);
- return error;
+ goto err_free_label;
}
if (fattr->valid & NFS_ATTR_FATTR_FSID &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid))
memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
+ err_free_label:
+ nfs4_label_free(label);
+
return error;
}
return status;
}
- static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct nfs4_getattr_arg args = {
.fh = fhandle,
};
struct nfs4_getattr_res res = {
.fattr = fattr,
+ .label = label,
.server = server,
};
struct rpc_message msg = {
.rpc_argp = &args,
.rpc_resp = &res,
};
-
+
+ args.bitmask = nfs4_bitmask(server, label);
+
nfs_fattr_init(fattr);
return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
}
- static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+ static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(server,
- _nfs4_proc_getattr(server, fhandle, fattr),
+ _nfs4_proc_getattr(server, fhandle, fattr, label),
&exception);
} while (exception.retry);
return err;
struct inode *inode = dentry->d_inode;
struct rpc_cred *cred = NULL;
struct nfs4_state *state = NULL;
+ struct nfs4_label *label = NULL;
int status;
if (pnfs_ld_layoutret_on_setattr(inode))
}
}
- status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
- if (status == 0)
+ label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
+ if (IS_ERR(label))
+ return PTR_ERR(label);
+
+ status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label);
+ if (status == 0) {
nfs_setattr_update_inode(inode, sattr);
+ nfs_setsecurity(inode, fattr, label);
+ }
+ nfs4_label_free(label);
return status;
}
static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
const struct qstr *name, struct nfs_fh *fhandle,
- struct nfs_fattr *fattr)
+ struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct nfs_server *server = NFS_SERVER(dir);
int status;
struct nfs4_lookup_res res = {
.server = server,
.fattr = fattr,
+ .label = label,
.fh = fhandle,
};
struct rpc_message msg = {
.rpc_resp = &res,
};
+ args.bitmask = nfs4_bitmask(server, label);
+
nfs_fattr_init(fattr);
dprintk("NFS call lookup %s\n", name->name);
static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
struct qstr *name, struct nfs_fh *fhandle,
- struct nfs_fattr *fattr)
+ struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct nfs4_exception exception = { };
struct rpc_clnt *client = *clnt;
int err;
do {
- err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr);
+ err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
switch (err) {
case -NFS4ERR_BADNAME:
err = -ENOENT;
}
static int nfs4_proc_lookup(struct inode *dir, struct qstr *name,
- struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+ struct nfs_fh *fhandle, struct nfs_fattr *fattr,
+ struct nfs4_label *label)
{
int status;
struct rpc_clnt *client = NFS_CLIENT(dir);
- status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr);
+ status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
if (client != NFS_CLIENT(dir)) {
rpc_shutdown_client(client);
nfs_fixup_secinfo_attributes(fattr);
int status;
struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir));
- status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr);
+ status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
if (status < 0) {
rpc_shutdown_client(client);
return ERR_PTR(status);
.rpc_cred = entry->cred,
};
int mode = entry->mask;
- int status;
+ int status = 0;
/*
* Determine which access bits we want to ask for...
nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
int flags)
{
+ struct nfs4_label l, *ilabel = NULL;
struct nfs_open_context *ctx;
struct nfs4_state *state;
int status = 0;
if (IS_ERR(ctx))
return PTR_ERR(ctx);
+ ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
+
sattr->ia_mode &= ~current_umask();
- state = nfs4_do_open(dir, dentry, ctx->mode,
- flags, sattr, ctx->cred,
- &ctx->mdsthreshold);
- d_drop(dentry);
+ state = nfs4_do_open(dir, ctx, flags, sattr, ilabel);
if (IS_ERR(state)) {
status = PTR_ERR(state);
goto out;
}
- d_add(dentry, igrab(state->inode));
- nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- ctx->state = state;
out:
+ nfs4_label_release_security(ilabel);
put_nfs_open_context(ctx);
return status;
}
res->server = server;
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
nfs41_init_sequence(&args->seq_args, &res->seq_res, 1);
+
+ nfs_fattr_init(res->dir_attr);
}
static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
.rpc_resp = &res,
};
int status = -ENOMEM;
-
+
status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
};
struct nfs4_link_res res = {
.server = server,
+ .label = NULL,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
if (res.fattr == NULL)
goto out;
+ res.label = nfs4_label_alloc(server, GFP_KERNEL);
+ if (IS_ERR(res.label)) {
+ status = PTR_ERR(res.label);
+ goto out;
+ }
+ arg.bitmask = nfs4_bitmask(server, res.label);
+
status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
if (!status) {
update_changeattr(dir, &res.cinfo);
- nfs_post_op_update_inode(inode, res.fattr);
+ status = nfs_post_op_update_inode(inode, res.fattr);
+ if (!status)
+ nfs_setsecurity(inode, res.fattr, res.label);
}
+
+
+ nfs4_label_free(res.label);
+
out:
nfs_free_fattr(res.fattr);
return status;
struct nfs4_create_res res;
struct nfs_fh fh;
struct nfs_fattr fattr;
+ struct nfs4_label *label;
};
static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
if (data != NULL) {
struct nfs_server *server = NFS_SERVER(dir);
+ data->label = nfs4_label_alloc(server, GFP_KERNEL);
+ if (IS_ERR(data->label))
+ goto out_free;
+
data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
data->msg.rpc_argp = &data->arg;
data->msg.rpc_resp = &data->res;
data->arg.name = name;
data->arg.attrs = sattr;
data->arg.ftype = ftype;
- data->arg.bitmask = server->attr_bitmask;
+ data->arg.bitmask = nfs4_bitmask(server, data->label);
data->res.server = server;
data->res.fh = &data->fh;
data->res.fattr = &data->fattr;
+ data->res.label = data->label;
nfs_fattr_init(data->res.fattr);
}
return data;
+ out_free:
+ kfree(data);
+ return NULL;
}
static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
&data->arg.seq_args, &data->res.seq_res, 1);
if (status == 0) {
update_changeattr(dir, &data->res.dir_cinfo);
- status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+ status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
}
return status;
}
static void nfs4_free_createdata(struct nfs4_createdata *data)
{
+ nfs4_label_free(data->label);
kfree(data);
}
static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
- struct page *page, unsigned int len, struct iattr *sattr)
+ struct page *page, unsigned int len, struct iattr *sattr,
+ struct nfs4_label *label)
{
struct nfs4_createdata *data;
int status = -ENAMETOOLONG;
data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
data->arg.u.symlink.pages = &page;
data->arg.u.symlink.len = len;
+ data->arg.label = label;
status = nfs4_do_create(dir, dentry, data);
struct page *page, unsigned int len, struct iattr *sattr)
{
struct nfs4_exception exception = { };
+ struct nfs4_label l, *label = NULL;
int err;
+
+ label = nfs4_label_init_security(dir, dentry, sattr, &l);
+
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
_nfs4_proc_symlink(dir, dentry, page,
- len, sattr),
+ len, sattr, label),
&exception);
} while (exception.retry);
+
+ nfs4_label_release_security(label);
return err;
}
static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
- struct iattr *sattr)
+ struct iattr *sattr, struct nfs4_label *label)
{
struct nfs4_createdata *data;
int status = -ENOMEM;
if (data == NULL)
goto out;
+ data->arg.label = label;
status = nfs4_do_create(dir, dentry, data);
nfs4_free_createdata(data);
struct iattr *sattr)
{
struct nfs4_exception exception = { };
+ struct nfs4_label l, *label = NULL;
int err;
+ label = nfs4_label_init_security(dir, dentry, sattr, &l);
+
sattr->ia_mode &= ~current_umask();
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
- _nfs4_proc_mkdir(dir, dentry, sattr),
+ _nfs4_proc_mkdir(dir, dentry, sattr, label),
&exception);
} while (exception.retry);
+ nfs4_label_release_security(label);
+
return err;
}
}
static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
- struct iattr *sattr, dev_t rdev)
+ struct iattr *sattr, struct nfs4_label *label, dev_t rdev)
{
struct nfs4_createdata *data;
int mode = sattr->ia_mode;
status = -EINVAL;
goto out_free;
}
-
+
+ data->arg.label = label;
status = nfs4_do_create(dir, dentry, data);
out_free:
nfs4_free_createdata(data);
struct iattr *sattr, dev_t rdev)
{
struct nfs4_exception exception = { };
+ struct nfs4_label l, *label = NULL;
int err;
+ label = nfs4_label_init_security(dir, dentry, sattr, &l);
+
sattr->ia_mode &= ~current_umask();
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
- _nfs4_proc_mknod(dir, dentry, sattr, rdev),
+ _nfs4_proc_mknod(dir, dentry, sattr, label, rdev),
&exception);
} while (exception.retry);
+
+ nfs4_label_release_security(label);
+
return err;
}
return err;
}
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ static int _nfs4_get_security_label(struct inode *inode, void *buf,
+ size_t buflen)
+ {
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct nfs_fattr fattr;
+ struct nfs4_label label = {0, 0, buflen, buf};
+
+ u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
+ struct nfs4_getattr_arg args = {
+ .fh = NFS_FH(inode),
+ .bitmask = bitmask,
+ };
+ struct nfs4_getattr_res res = {
+ .fattr = &fattr,
+ .label = &label,
+ .server = server,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ };
+ int ret;
+
+ nfs_fattr_init(&fattr);
+
+ ret = rpc_call_sync(server->client, &msg, 0);
+ if (ret)
+ return ret;
+ if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
+ return -ENOENT;
+ if (buflen < label.len)
+ return -ERANGE;
+ return 0;
+ }
+
+ static int nfs4_get_security_label(struct inode *inode, void *buf,
+ size_t buflen)
+ {
+ struct nfs4_exception exception = { };
+ int err;
+
+ if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
+ return -EOPNOTSUPP;
+
+ do {
+ err = nfs4_handle_exception(NFS_SERVER(inode),
+ _nfs4_get_security_label(inode, buf, buflen),
+ &exception);
+ } while (exception.retry);
+ return err;
+ }
+
+ static int _nfs4_do_set_security_label(struct inode *inode,
+ struct nfs4_label *ilabel,
+ struct nfs_fattr *fattr,
+ struct nfs4_label *olabel)
+ {
+
+ struct iattr sattr = {0};
+ struct nfs_server *server = NFS_SERVER(inode);
+ const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
+ struct nfs_setattrargs args = {
+ .fh = NFS_FH(inode),
+ .iap = &sattr,
+ .server = server,
+ .bitmask = bitmask,
+ .label = ilabel,
+ };
+ struct nfs_setattrres res = {
+ .fattr = fattr,
+ .label = olabel,
+ .server = server,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ };
+ int status;
+
+ nfs4_stateid_copy(&args.stateid, &zero_stateid);
+
+ status = rpc_call_sync(server->client, &msg, 0);
+ if (status)
+ dprintk("%s failed: %d\n", __func__, status);
+
+ return status;
+ }
+
+ static int nfs4_do_set_security_label(struct inode *inode,
+ struct nfs4_label *ilabel,
+ struct nfs_fattr *fattr,
+ struct nfs4_label *olabel)
+ {
+ struct nfs4_exception exception = { };
+ int err;
+
+ do {
+ err = nfs4_handle_exception(NFS_SERVER(inode),
+ _nfs4_do_set_security_label(inode, ilabel,
+ fattr, olabel),
+ &exception);
+ } while (exception.retry);
+ return err;
+ }
+
+ static int
+ nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen)
+ {
+ struct nfs4_label ilabel, *olabel = NULL;
+ struct nfs_fattr fattr;
+ struct rpc_cred *cred;
+ struct inode *inode = dentry->d_inode;
+ int status;
+
+ if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
+ return -EOPNOTSUPP;
+
+ nfs_fattr_init(&fattr);
+
+ ilabel.pi = 0;
+ ilabel.lfs = 0;
+ ilabel.label = (char *)buf;
+ ilabel.len = buflen;
+
+ cred = rpc_lookup_cred();
+ if (IS_ERR(cred))
+ return PTR_ERR(cred);
+
+ olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
+ if (IS_ERR(olabel)) {
+ status = -PTR_ERR(olabel);
+ goto out;
+ }
+
+ status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel);
+ if (status == 0)
+ nfs_setsecurity(inode, &fattr, olabel);
+
+ nfs4_label_free(olabel);
+ out:
+ put_rpccred(cred);
+ return status;
+ }
+ #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
+
+
static int
nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
{
/* cb_client4 */
rcu_read_lock();
setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
- sizeof(setclientid.sc_netid),
+ sizeof(setclientid.sc_netid), "%s",
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_NETID));
rcu_read_unlock();
static unsigned long
nfs4_set_lock_task_retry(unsigned long timeout)
{
- freezable_schedule_timeout_killable(timeout);
+ freezable_schedule_timeout_killable_unsafe(timeout);
timeout <<= 1;
if (timeout > NFS4_LOCK_MAXTIMEOUT)
return NFS4_LOCK_MAXTIMEOUT;
list_for_each_entry(lsp, &state->lock_states, ls_locks) {
if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
- status = nfs41_test_stateid(server, &lsp->ls_stateid);
+ struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
+
+ status = nfs41_test_stateid(server,
+ &lsp->ls_stateid,
+ cred);
if (status != NFS_OK) {
/* Free the stateid unless the server
* informs us the stateid is unrecognized. */
if (status != -NFS4ERR_BAD_STATEID)
nfs41_free_stateid(server,
- &lsp->ls_stateid);
+ &lsp->ls_stateid,
+ cred);
clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
ret = status;
}
return len;
}
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ static inline int nfs4_server_supports_labels(struct nfs_server *server)
+ {
+ return server->caps & NFS_CAP_SECURITY_LABEL;
+ }
+
+ static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key,
+ const void *buf, size_t buflen,
+ int flags, int type)
+ {
+ if (security_ismaclabel(key))
+ return nfs4_set_security_label(dentry, buf, buflen);
+
+ return -EOPNOTSUPP;
+ }
+
+ static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key,
+ void *buf, size_t buflen, int type)
+ {
+ if (security_ismaclabel(key))
+ return nfs4_get_security_label(dentry->d_inode, buf, buflen);
+ return -EOPNOTSUPP;
+ }
+
+ static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list,
+ size_t list_len, const char *name,
+ size_t name_len, int type)
+ {
+ size_t len = 0;
+
+ if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) {
+ len = security_inode_listsecurity(dentry->d_inode, NULL, 0);
+ if (list && len <= list_len)
+ security_inode_listsecurity(dentry->d_inode, list, len);
+ }
+ return len;
+ }
+
+ static const struct xattr_handler nfs4_xattr_nfs4_label_handler = {
+ .prefix = XATTR_SECURITY_PREFIX,
+ .list = nfs4_xattr_list_nfs4_label,
+ .get = nfs4_xattr_get_nfs4_label,
+ .set = nfs4_xattr_set_nfs4_label,
+ };
+ #endif
+
+
/*
* nfs_fhget will use either the mounted_on_fileid or the fileid
*/
struct page *page)
{
struct nfs_server *server = NFS_SERVER(dir);
- u32 bitmask[2] = {
+ u32 bitmask[3] = {
[0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
};
struct nfs4_fs_locations_arg args = {
struct nfs41_exchange_id_args args = {
.verifier = &verifier,
.client = clp,
- .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER,
+ .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
+ EXCHGID4_FLAG_BIND_PRINC_STATEID,
};
struct nfs41_exchange_id_res res = {
0
*/
static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
{
- struct nfs4_session *session = args->client->cl_session;
- unsigned int mxrqst_sz = session->fc_target_max_rqst_sz,
- mxresp_sz = session->fc_target_max_resp_sz;
+ unsigned int max_rqst_sz, max_resp_sz;
+
+ max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
+ max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;
- if (mxrqst_sz == 0)
- mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
- if (mxresp_sz == 0)
- mxresp_sz = NFS_MAX_FILE_IO_SIZE;
/* Fore channel attributes */
- args->fc_attrs.max_rqst_sz = mxrqst_sz;
- args->fc_attrs.max_resp_sz = mxresp_sz;
+ args->fc_attrs.max_rqst_sz = max_rqst_sz;
+ args->fc_attrs.max_resp_sz = max_resp_sz;
args->fc_attrs.max_ops = NFS4_MAX_OPS;
args->fc_attrs.max_reqs = max_session_slots;
/*
* Issue a global reclaim complete.
*/
- static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
+ static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
+ struct rpc_cred *cred)
{
struct nfs4_reclaim_complete_data *calldata;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
+ .rpc_cred = cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = clp->cl_rpcclient,
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
.rpc_argp = &lgp->args,
.rpc_resp = &lgp->res,
+ .rpc_cred = lgp->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = server->client,
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
.rpc_argp = &lrp->args,
.rpc_resp = &lrp->res,
+ .rpc_cred = lrp->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = lrp->clp->cl_rpcclient,
EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
static int
- _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
+ _nfs4_proc_getdeviceinfo(struct nfs_server *server,
+ struct pnfs_device *pdev,
+ struct rpc_cred *cred)
{
struct nfs4_getdeviceinfo_args args = {
.pdev = pdev,
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
.rpc_argp = &args,
.rpc_resp = &res,
+ .rpc_cred = cred,
};
int status;
return status;
}
- int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
+ int nfs4_proc_getdeviceinfo(struct nfs_server *server,
+ struct pnfs_device *pdev,
+ struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(server,
- _nfs4_proc_getdeviceinfo(server, pdev),
+ _nfs4_proc_getdeviceinfo(server, pdev, cred),
&exception);
} while (exception.retry);
return err;
return err;
}
- static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid)
+ static int _nfs41_test_stateid(struct nfs_server *server,
+ nfs4_stateid *stateid,
+ struct rpc_cred *cred)
{
int status;
struct nfs41_test_stateid_args args = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
.rpc_argp = &args,
.rpc_resp = &res,
+ .rpc_cred = cred,
};
dprintk("NFS call test_stateid %p\n", stateid);
*
* @server: server / transport on which to perform the operation
* @stateid: state ID to test
+ * @cred: credential
*
* Returns NFS_OK if the server recognizes that "stateid" is valid.
* Otherwise a negative NFS4ERR value is returned if the operation
* failed or the state ID is not currently valid.
*/
- static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid)
+ static int nfs41_test_stateid(struct nfs_server *server,
+ nfs4_stateid *stateid,
+ struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
int err;
do {
- err = _nfs41_test_stateid(server, stateid);
+ err = _nfs41_test_stateid(server, stateid, cred);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server,
nfs4_stateid *stateid,
+ struct rpc_cred *cred,
bool privileged)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
+ .rpc_cred = cred,
};
struct rpc_task_setup task_setup = {
.rpc_client = server->client,
*
* @server: server / transport on which to perform the operation
* @stateid: state ID to release
+ * @cred: credential
*
* Returns NFS_OK if the server freed "stateid". Otherwise a
* negative NFS4ERR value is returned.
*/
- static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid)
+ static int nfs41_free_stateid(struct nfs_server *server,
+ nfs4_stateid *stateid,
+ struct rpc_cred *cred)
{
struct rpc_task *task;
int ret;
- task = _nfs41_free_stateid(server, stateid, true);
+ task = _nfs41_free_stateid(server, stateid, cred, true);
if (IS_ERR(task))
return PTR_ERR(task);
ret = rpc_wait_for_completion_task(task);
static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
{
struct rpc_task *task;
+ struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
- task = _nfs41_free_stateid(server, &lsp->ls_stateid, false);
+ task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
nfs4_free_lock_state(server, lsp);
if (IS_ERR(task))
return PTR_ERR(task);
};
#endif
+ #if defined(CONFIG_NFS_V4_2)
+ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
+ .minor_version = 2,
+ .init_caps = NFS_CAP_READDIRPLUS
+ | NFS_CAP_ATOMIC_OPEN
+ | NFS_CAP_CHANGE_ATTR
+ | NFS_CAP_POSIX_LOCK
+ | NFS_CAP_STATEID_NFSV41
+ | NFS_CAP_ATOMIC_OPEN_V1,
+ .call_sync = nfs4_call_sync_sequence,
+ .match_stateid = nfs41_match_stateid,
+ .find_root_sec = nfs41_find_root_sec,
+ .free_lock_state = nfs41_free_lock_state,
+ .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
+ .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
+ .state_renewal_ops = &nfs41_state_renewal_ops,
+ };
+ #endif
+
const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
[0] = &nfs_v4_0_minor_ops,
#if defined(CONFIG_NFS_V4_1)
[1] = &nfs_v4_1_minor_ops,
#endif
+ #if defined(CONFIG_NFS_V4_2)
+ [2] = &nfs_v4_2_minor_ops,
+ #endif
};
const struct inode_operations nfs4_dir_inode_operations = {
const struct xattr_handler *nfs4_xattr_handlers[] = {
&nfs4_xattr_nfs4_acl_handler,
+ #ifdef CONFIG_NFS_V4_SECURITY_LABEL
+ &nfs4_xattr_nfs4_label_handler,
+ #endif
NULL
};
return status;
}
- /*
- * Back channel returns NFS4ERR_DELAY for new requests when
- * NFS4_SESSION_DRAINING is set so there is no work to be done when draining
- * is ended.
- */
- static void nfs4_end_drain_session(struct nfs_client *clp)
+ static void nfs4_end_drain_slot_table(struct nfs4_slot_table *tbl)
{
- struct nfs4_session *ses = clp->cl_session;
- struct nfs4_slot_table *tbl;
-
- if (ses == NULL)
- return;
- tbl = &ses->fc_slot_table;
if (test_and_clear_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) {
spin_lock(&tbl->slot_tbl_lock);
nfs41_wake_slot_table(tbl);
}
}
+ static void nfs4_end_drain_session(struct nfs_client *clp)
+ {
+ struct nfs4_session *ses = clp->cl_session;
+
+ if (ses != NULL) {
+ nfs4_end_drain_slot_table(&ses->bc_slot_table);
+ nfs4_end_drain_slot_table(&ses->fc_slot_table);
+ }
+ }
+
/*
* Signal state manager thread if session fore channel is drained
*/
snprintf(buf, sizeof(buf), "%s-manager",
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
rcu_read_unlock();
- task = kthread_run(nfs4_run_state_manager, clp, buf);
+ task = kthread_run(nfs4_run_state_manager, clp, "%s", buf);
if (IS_ERR(task)) {
printk(KERN_ERR "%s: kthread_run: %ld\n",
__func__, PTR_ERR(task));
/* Guard against delegation returns and new lock/unlock calls */
down_write(&nfsi->rwsem);
/* Protect inode->i_flock using the BKL */
- lock_flocks();
+ spin_lock(&inode->i_lock);
for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) {
if (!(fl->fl_flags & (FL_POSIX|FL_FLOCK)))
continue;
if (nfs_file_open_context(fl->fl_file)->state != state)
continue;
- unlock_flocks();
+ spin_unlock(&inode->i_lock);
status = ops->recover_lock(state, fl);
switch (status) {
case 0:
/* kill_proc(fl->fl_pid, SIGLOST, 1); */
status = 0;
}
- lock_flocks();
+ spin_lock(&inode->i_lock);
}
- unlock_flocks();
+ spin_unlock(&inode->i_lock);
out:
up_write(&nfsi->rwsem);
return status;
}
static void nfs4_reclaim_complete(struct nfs_client *clp,
- const struct nfs4_state_recovery_ops *ops)
+ const struct nfs4_state_recovery_ops *ops,
+ struct rpc_cred *cred)
{
/* Notify the server we're done reclaiming our state */
if (ops->reclaim_complete)
- (void)ops->reclaim_complete(clp);
+ (void)ops->reclaim_complete(clp, cred);
}
static void nfs4_clear_reclaim_server(struct nfs_server *server)
static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
{
+ const struct nfs4_state_recovery_ops *ops;
+ struct rpc_cred *cred;
+
if (!nfs4_state_clear_reclaim_reboot(clp))
return;
- nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops);
+ ops = clp->cl_mvops->reboot_recovery_ops;
+ cred = ops->get_clid_cred(clp);
+ nfs4_reclaim_complete(clp, ops, cred);
+ put_rpccred(cred);
}
static void nfs_delegation_clear_all(struct nfs_client *clp)
#include <linux/capability.h>
#include <linux/slab.h>
#include <linux/err.h>
+ #include <linux/string.h>
struct linux_binprm;
struct cred;
#define SECURITY_CAP_NOAUDIT 0
#define SECURITY_CAP_AUDIT 1
+ /* LSM Agnostic defines for sb_set_mnt_opts */
+ #define SECURITY_LSM_NATIVE_LABELS 1
+
struct ctl_table;
struct audit_krule;
struct user_namespace;
* Parse a string of security data filling in the opts structure
* @options string containing all mount options known by the LSM
* @opts binary data structure usable by the LSM
+ * @dentry_init_security:
+ * Compute a context for a dentry as the inode is not yet available
+ * since NFSv4 has no label backed by an EA anyway.
+ * @dentry dentry to use in calculating the context.
+ * @mode mode used to determine resource type.
+ * @name name of the last path component used to create file
+ * @ctx pointer to place the pointer to the resulting context in.
+ * @ctxlen point to place the length of the resulting context.
+ *
*
* Security hooks for inode operations.
*
* @pages contains the number of pages.
* Return 0 if permission is granted.
*
+ * @ismaclabel:
+ * Check if the extended attribute specified by @name
+ * represents a MAC label. Returns 1 if name is a MAC
+ * attribute otherwise returns 0.
+ * @name full extended attribute name to check against
+ * LSM as a MAC label.
+ *
* @secid_to_secctx:
* Convert secid to security context. If secdata is NULL the length of
* the result will be returned in seclen, but no secdata will be returned.
* @ctxlen contains the length of @ctx.
*
* @inode_getsecctx:
- * Returns a string containing all relevant security context information
+ * On success, returns 0 and fills out @ctx and @ctxlen with the security
+ * context for the given @inode.
*
* @inode we wish to get the security context of.
* @ctx is a pointer in which to place the allocated security context.
int (*sb_pivotroot) (struct path *old_path,
struct path *new_path);
int (*sb_set_mnt_opts) (struct super_block *sb,
- struct security_mnt_opts *opts);
+ struct security_mnt_opts *opts,
+ unsigned long kern_flags,
+ unsigned long *set_kern_flags);
int (*sb_clone_mnt_opts) (const struct super_block *oldsb,
struct super_block *newsb);
int (*sb_parse_opts_str) (char *options, struct security_mnt_opts *opts);
+ int (*dentry_init_security) (struct dentry *dentry, int mode,
+ struct qstr *name, void **ctx,
+ u32 *ctxlen);
+
#ifdef CONFIG_SECURITY_PATH
int (*path_unlink) (struct path *dir, struct dentry *dentry);
int (*getprocattr) (struct task_struct *p, char *name, char **value);
int (*setprocattr) (struct task_struct *p, char *name, void *value, size_t size);
+ int (*ismaclabel) (const char *name);
int (*secid_to_secctx) (u32 secid, char **secdata, u32 *seclen);
int (*secctx_to_secid) (const char *secdata, u32 seclen, u32 *secid);
void (*release_secctx) (char *secdata, u32 seclen);
const char *type, unsigned long flags, void *data);
int security_sb_umount(struct vfsmount *mnt, int flags);
int security_sb_pivotroot(struct path *old_path, struct path *new_path);
- int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
+ int security_sb_set_mnt_opts(struct super_block *sb,
+ struct security_mnt_opts *opts,
+ unsigned long kern_flags,
+ unsigned long *set_kern_flags);
int security_sb_clone_mnt_opts(const struct super_block *oldsb,
struct super_block *newsb);
int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
+ int security_dentry_init_security(struct dentry *dentry, int mode,
+ struct qstr *name, void **ctx,
+ u32 *ctxlen);
int security_inode_alloc(struct inode *inode);
void security_inode_free(struct inode *inode);
int security_getprocattr(struct task_struct *p, char *name, char **value);
int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
int security_netlink_send(struct sock *sk, struct sk_buff *skb);
+ int security_ismaclabel(const char *name);
int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
void security_release_secctx(char *secdata, u32 seclen);
}
static inline int security_sb_set_mnt_opts(struct super_block *sb,
- struct security_mnt_opts *opts)
+ struct security_mnt_opts *opts,
+ unsigned long kern_flags,
+ unsigned long *set_kern_flags)
{
return 0;
}
static inline void security_inode_free(struct inode *inode)
{ }
+ static inline int security_dentry_init_security(struct dentry *dentry,
+ int mode,
+ struct qstr *name,
+ void **ctx,
+ u32 *ctxlen)
+ {
+ return -EOPNOTSUPP;
+ }
+
+
static inline int security_inode_init_security(struct inode *inode,
struct inode *dir,
const struct qstr *qstr,
return cap_netlink_send(sk, skb);
}
+ static inline int security_ismaclabel(const char *name)
+ {
+ return 0;
+ }
+
static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
{
return -EOPNOTSUPP;
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
- freezable_schedule();
+ freezable_schedule_unsafe();
return 0;
}
}
/*
- * Tests whether rpc queue is empty
- */
- int rpc_queue_empty(struct rpc_wait_queue *queue)
- {
- int res;
-
- spin_lock_bh(&queue->lock);
- res = queue->qlen;
- spin_unlock_bh(&queue->lock);
- return res == 0;
- }
- EXPORT_SYMBOL_GPL(rpc_queue_empty);
-
- /*
* Wake up a task on a specific queue
*/
void rpc_wake_up_queued_task(struct rpc_wait_queue *queue, struct rpc_task *task)
task->tk_flags |= RPC_TASK_KILLED;
rpc_exit(task, -ERESTARTSYS);
}
- rpc_set_running(task);
dprintk("RPC: %5u sync task resuming\n", task->tk_pid);
}
*/
void rpc_execute(struct rpc_task *task)
{
+ bool is_async = RPC_IS_ASYNC(task);
+
rpc_set_active(task);
rpc_make_runnable(task);
- if (!RPC_IS_ASYNC(task))
+ if (!is_async)
__rpc_execute(task);
}
#include <linux/syslog.h>
#include <linux/user_namespace.h>
#include <linux/export.h>
+ #include <linux/security.h>
#include <linux/msg.h>
#include <linux/shm.h>
/* The file system's label must be initialized prior to use. */
- static const char *labeling_behaviors[6] = {
+ static const char *labeling_behaviors[7] = {
"uses xattr",
"uses transition SIDs",
"uses task SIDs",
"uses genfs_contexts",
"not configured for labeling",
"uses mountpoint labeling",
+ "uses native labeling",
};
static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dentry);
* labeling information.
*/
static int selinux_set_mnt_opts(struct super_block *sb,
- struct security_mnt_opts *opts)
+ struct security_mnt_opts *opts,
+ unsigned long kern_flags,
+ unsigned long *set_kern_flags)
{
const struct cred *cred = current_cred();
int rc = 0, i;
"before the security server is initialized\n");
goto out;
}
+ if (kern_flags && !set_kern_flags) {
+ /* Specifying internal flags without providing a place to
+ * place the results is not allowed */
+ rc = -EINVAL;
+ goto out;
+ }
/*
* Binary mount data FS will come through this function twice. Once
if (strcmp(sb->s_type->name, "proc") == 0)
sbsec->flags |= SE_SBPROC;
- /* Determine the labeling behavior to use for this filesystem type. */
- rc = security_fs_use((sbsec->flags & SE_SBPROC) ? "proc" : sb->s_type->name, &sbsec->behavior, &sbsec->sid);
- if (rc) {
- printk(KERN_WARNING "%s: security_fs_use(%s) returned %d\n",
- __func__, sb->s_type->name, rc);
- goto out;
+ if (!sbsec->behavior) {
+ /*
+ * Determine the labeling behavior to use for this
+ * filesystem type.
+ */
+ rc = security_fs_use((sbsec->flags & SE_SBPROC) ?
+ "proc" : sb->s_type->name,
+ &sbsec->behavior, &sbsec->sid);
+ if (rc) {
+ printk(KERN_WARNING
+ "%s: security_fs_use(%s) returned %d\n",
+ __func__, sb->s_type->name, rc);
+ goto out;
+ }
}
-
/* sets the context of the superblock for the fs being mounted. */
if (fscontext_sid) {
rc = may_context_mount_sb_relabel(fscontext_sid, sbsec, cred);
* sets the label used on all file below the mountpoint, and will set
* the superblock context if not already set.
*/
+ if (kern_flags & SECURITY_LSM_NATIVE_LABELS && !context_sid) {
+ sbsec->behavior = SECURITY_FS_USE_NATIVE;
+ *set_kern_flags |= SECURITY_LSM_NATIVE_LABELS;
+ }
+
if (context_sid) {
if (!fscontext_sid) {
rc = may_context_mount_sb_relabel(context_sid, sbsec,
}
if (defcontext_sid) {
- if (sbsec->behavior != SECURITY_FS_USE_XATTR) {
+ if (sbsec->behavior != SECURITY_FS_USE_XATTR &&
+ sbsec->behavior != SECURITY_FS_USE_NATIVE) {
rc = -EINVAL;
printk(KERN_WARNING "SELinux: defcontext option is "
"invalid for this filesystem type\n");
goto out_err;
out:
- rc = selinux_set_mnt_opts(sb, &opts);
+ rc = selinux_set_mnt_opts(sb, &opts, 0, NULL);
out_err:
security_free_mnt_opts(&opts);
}
switch (sbsec->behavior) {
+ case SECURITY_FS_USE_NATIVE:
+ break;
case SECURITY_FS_USE_XATTR:
if (!inode->i_op->getxattr) {
isec->sid = sbsec->def_sid;
return inode_has_perm(cred, inode, av, &ad, 0);
}
+/* Same as path_has_perm, but uses the inode from the file struct. */
+static inline int file_path_has_perm(const struct cred *cred,
+ struct file *file,
+ u32 av)
+{
+ struct common_audit_data ad;
+
+ ad.type = LSM_AUDIT_DATA_PATH;
+ ad.u.path = file->f_path;
+ return inode_has_perm(cred, file_inode(file), av, &ad, 0);
+}
+
/* Check whether a task can use an open file descriptor to
access an inode in a given way. Check access to the
descriptor itself, and then use dentry_has_perm to
struct tty_file_private *file_priv;
/* Revalidate access to controlling tty.
- Use path_has_perm on the tty path directly rather
- than using file_has_perm, as this particular open
- file may belong to another process and we are only
- interested in the inode-based check here. */
+ Use file_path_has_perm on the tty path directly
+ rather than using file_has_perm, as this particular
+ open file may belong to another process and we are
+ only interested in the inode-based check here. */
file_priv = list_first_entry(&tty->tty_files,
struct tty_file_private, list);
file = file_priv->file;
- if (path_has_perm(cred, &file->f_path, FILE__READ | FILE__WRITE))
+ if (file_path_has_perm(cred, file, FILE__READ | FILE__WRITE))
drop_tty = 1;
}
spin_unlock(&tty_files_lock);
inode_free_security(inode);
}
+ static int selinux_dentry_init_security(struct dentry *dentry, int mode,
+ struct qstr *name, void **ctx,
+ u32 *ctxlen)
+ {
+ const struct cred *cred = current_cred();
+ struct task_security_struct *tsec;
+ struct inode_security_struct *dsec;
+ struct superblock_security_struct *sbsec;
+ struct inode *dir = dentry->d_parent->d_inode;
+ u32 newsid;
+ int rc;
+
+ tsec = cred->security;
+ dsec = dir->i_security;
+ sbsec = dir->i_sb->s_security;
+
+ if (tsec->create_sid && sbsec->behavior != SECURITY_FS_USE_MNTPOINT) {
+ newsid = tsec->create_sid;
+ } else {
+ rc = security_transition_sid(tsec->sid, dsec->sid,
+ inode_mode_to_security_class(mode),
+ name,
+ &newsid);
+ if (rc) {
+ printk(KERN_WARNING
+ "%s: security_transition_sid failed, rc=%d\n",
+ __func__, -rc);
+ return rc;
+ }
+ }
+
+ return security_sid_to_context(newsid, (char **)ctx, ctxlen);
+ }
+
static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
const struct qstr *qstr, char **name,
void **value, size_t *len)
return;
}
+ isec->sclass = inode_mode_to_security_class(inode->i_mode);
isec->sid = newsid;
+ isec->initialized = 1;
+
return;
}
if (rc)
return rc;
+ isec->sclass = inode_mode_to_security_class(inode->i_mode);
isec->sid = newsid;
isec->initialized = 1;
return 0;
* new inode label or new policy.
* This check is not redundant - do not remove.
*/
- return path_has_perm(cred, &file->f_path, open_file_to_av(file));
+ return file_path_has_perm(cred, file, open_file_to_av(file));
}
/* task security operations */
return error;
}
+ static int selinux_ismaclabel(const char *name)
+ {
+ return (strcmp(name, XATTR_SELINUX_SUFFIX) == 0);
+ }
+
static int selinux_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
{
return security_sid_to_context(secid, secdata, seclen);
.sb_clone_mnt_opts = selinux_sb_clone_mnt_opts,
.sb_parse_opts_str = selinux_parse_opts_str,
+ .dentry_init_security = selinux_dentry_init_security,
.inode_alloc_security = selinux_inode_alloc_security,
.inode_free_security = selinux_inode_free_security,
.getprocattr = selinux_getprocattr,
.setprocattr = selinux_setprocattr,
+ .ismaclabel = selinux_ismaclabel,
.secid_to_secctx = selinux_secid_to_secctx,
.secctx_to_secid = selinux_secctx_to_secid,
.release_secctx = selinux_release_secctx,
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
+#include <linux/dccp.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/pipe_fs_i.h>
#include <net/cipso_ipv4.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
#include <linux/audit.h>
#include <linux/magic.h>
#include <linux/dcache.h>
#define TRANS_TRUE "TRUE"
#define TRANS_TRUE_SIZE 4
+#define SMK_CONNECTING 0
+#define SMK_RECEIVING 1
+#define SMK_SENDING 2
+
+LIST_HEAD(smk_ipv6_port_list);
+
/**
* smk_fetch - Fetch the smack label from a file.
* @ip: a pointer to the inode
* Returns a pointer to the master list entry for the Smack label
* or NULL if there was no label to fetch.
*/
-static char *smk_fetch(const char *name, struct inode *ip, struct dentry *dp)
+static struct smack_known *smk_fetch(const char *name, struct inode *ip,
+ struct dentry *dp)
{
int rc;
char *buffer;
- char *result = NULL;
+ struct smack_known *skp = NULL;
if (ip->i_op->getxattr == NULL)
return NULL;
rc = ip->i_op->getxattr(dp, name, buffer, SMK_LONGLABEL);
if (rc > 0)
- result = smk_import(buffer, rc);
+ skp = smk_import_entry(buffer, rc);
kfree(buffer);
- return result;
+ return skp;
}
/**
*
* Returns the new blob or NULL if there's no memory available
*/
-static struct task_smack *new_task_smack(char *task, char *forked, gfp_t gfp)
+static struct task_smack *new_task_smack(struct smack_known *task,
+ struct smack_known *forked, gfp_t gfp)
{
struct task_smack *tsp;
{
int rc;
struct smk_audit_info ad;
- char *tsp;
+ struct smack_known *skp;
rc = cap_ptrace_access_check(ctp, mode);
if (rc != 0)
return rc;
- tsp = smk_of_task(task_security(ctp));
+ skp = smk_of_task(task_security(ctp));
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, ctp);
- rc = smk_curacc(tsp, MAY_READWRITE, &ad);
+ rc = smk_curacc(skp->smk_known, MAY_READWRITE, &ad);
return rc;
}
{
int rc;
struct smk_audit_info ad;
- char *tsp;
+ struct smack_known *skp;
rc = cap_ptrace_traceme(ptp);
if (rc != 0)
return rc;
- tsp = smk_of_task(task_security(ptp));
+ skp = smk_of_task(task_security(ptp));
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, ptp);
- rc = smk_curacc(tsp, MAY_READWRITE, &ad);
+ rc = smk_curacc(skp->smk_known, MAY_READWRITE, &ad);
return rc;
}
static int smack_syslog(int typefrom_file)
{
int rc = 0;
- char *sp = smk_of_current();
+ struct smack_known *skp = smk_of_current();
if (smack_privileged(CAP_MAC_OVERRIDE))
return 0;
- if (sp != smack_known_floor.smk_known)
+ if (skp != &smack_known_floor)
rc = -EACCES;
return rc;
sbsp->smk_default = smack_known_floor.smk_known;
sbsp->smk_floor = smack_known_floor.smk_known;
sbsp->smk_hat = smack_known_hat.smk_known;
- sbsp->smk_initialized = 0;
-
+ /*
+ * smk_initialized will be zero from kzalloc.
+ */
sb->s_security = sbsp;
return 0;
dp = smackopts;
else if (strstr(cp, SMK_FSROOT) == cp)
dp = smackopts;
+ else if (strstr(cp, SMK_FSTRANS) == cp)
+ dp = smackopts;
else
dp = otheropts;
char *op;
char *commap;
char *nsp;
+ int transmute = 0;
- if (sp->smk_initialized != 0)
+ if (sp->smk_initialized)
return 0;
sp->smk_initialized = 1;
nsp = smk_import(op, 0);
if (nsp != NULL)
sp->smk_root = nsp;
+ } else if (strncmp(op, SMK_FSTRANS, strlen(SMK_FSTRANS)) == 0) {
+ op += strlen(SMK_FSTRANS);
+ nsp = smk_import(op, 0);
+ if (nsp != NULL) {
+ sp->smk_root = nsp;
+ transmute = 1;
+ }
}
}
* Initialize the root inode.
*/
isp = inode->i_security;
- if (isp == NULL)
+ if (inode->i_security == NULL) {
inode->i_security = new_inode_smack(sp->smk_root);
- else
+ isp = inode->i_security;
+ } else
isp->smk_inode = sp->smk_root;
+ if (transmute)
+ isp->smk_flags |= SMK_INODE_TRANSMUTE;
+
return 0;
}
*/
static int smack_inode_alloc_security(struct inode *inode)
{
- inode->i_security = new_inode_smack(smk_of_current());
+ struct smack_known *skp = smk_of_current();
+
+ inode->i_security = new_inode_smack(skp->smk_known);
if (inode->i_security == NULL)
return -ENOMEM;
return 0;
const struct qstr *qstr, char **name,
void **value, size_t *len)
{
- struct smack_known *skp;
struct inode_smack *issp = inode->i_security;
- char *csp = smk_of_current();
+ struct smack_known *skp = smk_of_current();
char *isp = smk_of_inode(inode);
char *dsp = smk_of_inode(dir);
int may;
}
if (value) {
- skp = smk_find_entry(csp);
rcu_read_lock();
- may = smk_access_entry(csp, dsp, &skp->smk_rules);
+ may = smk_access_entry(skp->smk_known, dsp, &skp->smk_rules);
rcu_read_unlock();
/*
static void smack_inode_post_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
- char *nsp;
+ struct smack_known *skp;
struct inode_smack *isp = dentry->d_inode->i_security;
+ if (strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0) {
+ isp->smk_flags |= SMK_INODE_TRANSMUTE;
+ return;
+ }
+
+ skp = smk_import_entry(value, size);
if (strcmp(name, XATTR_NAME_SMACK) == 0) {
- nsp = smk_import(value, size);
- if (nsp != NULL)
- isp->smk_inode = nsp;
+ if (skp != NULL)
+ isp->smk_inode = skp->smk_known;
else
isp->smk_inode = smack_known_invalid.smk_known;
} else if (strcmp(name, XATTR_NAME_SMACKEXEC) == 0) {
- nsp = smk_import(value, size);
- if (nsp != NULL)
- isp->smk_task = nsp;
+ if (skp != NULL)
+ isp->smk_task = skp;
else
- isp->smk_task = smack_known_invalid.smk_known;
+ isp->smk_task = &smack_known_invalid;
} else if (strcmp(name, XATTR_NAME_SMACKMMAP) == 0) {
- nsp = smk_import(value, size);
- if (nsp != NULL)
- isp->smk_mmap = nsp;
+ if (skp != NULL)
+ isp->smk_mmap = skp;
else
- isp->smk_mmap = smack_known_invalid.smk_known;
- } else if (strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0)
- isp->smk_flags |= SMK_INODE_TRANSMUTE;
+ isp->smk_mmap = &smack_known_invalid;
+ }
return;
}
if (strcmp(name, XATTR_SMACK_IPIN) == 0)
isp = ssp->smk_in;
else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
- isp = ssp->smk_out;
+ isp = ssp->smk_out->smk_known;
else
return -EOPNOTSUPP;
*/
static int smack_file_alloc_security(struct file *file)
{
- file->f_security = smk_of_current();
+ struct smack_known *skp = smk_of_current();
+
+ file->f_security = skp->smk_known;
return 0;
}
unsigned long flags)
{
struct smack_known *skp;
+ struct smack_known *mkp;
struct smack_rule *srp;
struct task_smack *tsp;
- char *sp;
- char *msmack;
char *osmack;
struct inode_smack *isp;
int may;
isp = file_inode(file)->i_security;
if (isp->smk_mmap == NULL)
return 0;
- msmack = isp->smk_mmap;
+ mkp = isp->smk_mmap;
tsp = current_security();
- sp = smk_of_current();
- skp = smk_find_entry(sp);
+ skp = smk_of_current();
rc = 0;
rcu_read_lock();
/*
* Matching labels always allows access.
*/
- if (msmack == osmack)
+ if (mkp->smk_known == osmack)
continue;
/*
* If there is a matching local rule take
* that into account as well.
*/
- may = smk_access_entry(srp->smk_subject, osmack,
+ may = smk_access_entry(srp->smk_subject->smk_known, osmack,
&tsp->smk_rules);
if (may == -ENOENT)
may = srp->smk_access;
* If there isn't one a SMACK64MMAP subject
* can't have as much access as current.
*/
- skp = smk_find_entry(msmack);
- mmay = smk_access_entry(msmack, osmack, &skp->smk_rules);
+ mmay = smk_access_entry(mkp->smk_known, osmack,
+ &mkp->smk_rules);
if (mmay == -ENOENT) {
rc = -EACCES;
break;
* If there is a local entry it modifies the
* potential access, too.
*/
- tmay = smk_access_entry(msmack, osmack, &tsp->smk_rules);
+ tmay = smk_access_entry(mkp->smk_known, osmack,
+ &tsp->smk_rules);
if (tmay != -ENOENT)
mmay &= tmay;
*/
static int smack_file_set_fowner(struct file *file)
{
- file->f_security = smk_of_current();
+ struct smack_known *skp = smk_of_current();
+
+ file->f_security = skp->smk_known;
return 0;
}
static int smack_file_send_sigiotask(struct task_struct *tsk,
struct fown_struct *fown, int signum)
{
+ struct smack_known *skp;
+ struct smack_known *tkp = smk_of_task(tsk->cred->security);
struct file *file;
int rc;
- char *tsp = smk_of_task(tsk->cred->security);
struct smk_audit_info ad;
/*
file = container_of(fown, struct file, f_owner);
/* we don't log here as rc can be overriden */
- rc = smk_access(file->f_security, tsp, MAY_WRITE, NULL);
+ skp = smk_find_entry(file->f_security);
+ rc = smk_access(skp, tkp->smk_known, MAY_WRITE, NULL);
if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
rc = 0;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, tsk);
- smack_log(file->f_security, tsp, MAY_WRITE, rc, &ad);
+ smack_log(file->f_security, tkp->smk_known, MAY_WRITE, rc, &ad);
return rc;
}
static int smack_kernel_act_as(struct cred *new, u32 secid)
{
struct task_smack *new_tsp = new->security;
- char *smack = smack_from_secid(secid);
+ struct smack_known *skp = smack_from_secid(secid);
- if (smack == NULL)
+ if (skp == NULL)
return -EINVAL;
- new_tsp->smk_task = smack;
+ new_tsp->smk_task = skp;
return 0;
}
struct inode_smack *isp = inode->i_security;
struct task_smack *tsp = new->security;
- tsp->smk_forked = isp->smk_inode;
- tsp->smk_task = isp->smk_inode;
+ tsp->smk_forked = smk_find_entry(isp->smk_inode);
+ tsp->smk_task = tsp->smk_forked;
return 0;
}
const char *caller)
{
struct smk_audit_info ad;
+ struct smack_known *skp = smk_of_task(task_security(p));
smk_ad_init(&ad, caller, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, p);
- return smk_curacc(smk_of_task(task_security(p)), access, &ad);
+ return smk_curacc(skp->smk_known, access, &ad);
}
/**
*/
static void smack_task_getsecid(struct task_struct *p, u32 *secid)
{
- *secid = smack_to_secid(smk_of_task(task_security(p)));
+ struct smack_known *skp = smk_of_task(task_security(p));
+
+ *secid = skp->smk_secid;
}
/**
int sig, u32 secid)
{
struct smk_audit_info ad;
+ struct smack_known *skp;
+ struct smack_known *tkp = smk_of_task(task_security(p));
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, p);
* can write the receiver.
*/
if (secid == 0)
- return smk_curacc(smk_of_task(task_security(p)), MAY_WRITE,
- &ad);
+ return smk_curacc(tkp->smk_known, MAY_WRITE, &ad);
/*
* If the secid isn't 0 we're dealing with some USB IO
* specific behavior. This is not clean. For one thing
* we can't take privilege into account.
*/
- return smk_access(smack_from_secid(secid),
- smk_of_task(task_security(p)), MAY_WRITE, &ad);
+ skp = smack_from_secid(secid);
+ return smk_access(skp, tkp->smk_known, MAY_WRITE, &ad);
}
/**
static void smack_task_to_inode(struct task_struct *p, struct inode *inode)
{
struct inode_smack *isp = inode->i_security;
- isp->smk_inode = smk_of_task(task_security(p));
+ struct smack_known *skp = smk_of_task(task_security(p));
+
+ isp->smk_inode = skp->smk_known;
}
/*
*/
static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
{
- char *csp = smk_of_current();
+ struct smack_known *skp = smk_of_current();
struct socket_smack *ssp;
ssp = kzalloc(sizeof(struct socket_smack), gfp_flags);
if (ssp == NULL)
return -ENOMEM;
- ssp->smk_in = csp;
- ssp->smk_out = csp;
+ ssp->smk_in = skp->smk_known;
+ ssp->smk_out = skp;
ssp->smk_packet = NULL;
sk->sk_security = ssp;
labeled == SMACK_UNLABELED_SOCKET)
netlbl_sock_delattr(sk);
else {
- skp = smk_find_entry(ssp->smk_out);
+ skp = ssp->smk_out;
rc = netlbl_sock_setattr(sk, sk->sk_family, &skp->smk_netlabel);
}
*/
static int smack_netlabel_send(struct sock *sk, struct sockaddr_in *sap)
{
+ struct smack_known *skp;
int rc;
int sk_lbl;
char *hostsp;
ad.a.u.net->v4info.daddr = sap->sin_addr.s_addr;
#endif
sk_lbl = SMACK_UNLABELED_SOCKET;
- rc = smk_access(ssp->smk_out, hostsp, MAY_WRITE, &ad);
+ skp = ssp->smk_out;
+ rc = smk_access(skp, hostsp, MAY_WRITE, &ad);
} else {
sk_lbl = SMACK_CIPSO_SOCKET;
rc = 0;
}
/**
+ * smk_ipv6_port_label - Smack port access table management
+ * @sock: socket
+ * @address: address
+ *
+ * Create or update the port list entry
+ */
+static void smk_ipv6_port_label(struct socket *sock, struct sockaddr *address)
+{
+ struct sock *sk = sock->sk;
+ struct sockaddr_in6 *addr6;
+ struct socket_smack *ssp = sock->sk->sk_security;
+ struct smk_port_label *spp;
+ unsigned short port = 0;
+
+ if (address == NULL) {
+ /*
+ * This operation is changing the Smack information
+ * on the bound socket. Take the changes to the port
+ * as well.
+ */
+ list_for_each_entry(spp, &smk_ipv6_port_list, list) {
+ if (sk != spp->smk_sock)
+ continue;
+ spp->smk_in = ssp->smk_in;
+ spp->smk_out = ssp->smk_out;
+ return;
+ }
+ /*
+ * A NULL address is only used for updating existing
+ * bound entries. If there isn't one, it's OK.
+ */
+ return;
+ }
+
+ addr6 = (struct sockaddr_in6 *)address;
+ port = ntohs(addr6->sin6_port);
+ /*
+ * This is a special case that is safely ignored.
+ */
+ if (port == 0)
+ return;
+
+ /*
+ * Look for an existing port list entry.
+ * This is an indication that a port is getting reused.
+ */
+ list_for_each_entry(spp, &smk_ipv6_port_list, list) {
+ if (spp->smk_port != port)
+ continue;
+ spp->smk_port = port;
+ spp->smk_sock = sk;
+ spp->smk_in = ssp->smk_in;
+ spp->smk_out = ssp->smk_out;
+ return;
+ }
+
+ /*
+ * A new port entry is required.
+ */
+ spp = kzalloc(sizeof(*spp), GFP_KERNEL);
+ if (spp == NULL)
+ return;
+
+ spp->smk_port = port;
+ spp->smk_sock = sk;
+ spp->smk_in = ssp->smk_in;
+ spp->smk_out = ssp->smk_out;
+
+ list_add(&spp->list, &smk_ipv6_port_list);
+ return;
+}
+
+/**
+ * smk_ipv6_port_check - check Smack port access
+ * @sock: socket
+ * @address: address
+ *
+ * Create or update the port list entry
+ */
+static int smk_ipv6_port_check(struct sock *sk, struct sockaddr *address,
+ int act)
+{
+ __be16 *bep;
+ __be32 *be32p;
+ struct sockaddr_in6 *addr6;
+ struct smk_port_label *spp;
+ struct socket_smack *ssp = sk->sk_security;
+ struct smack_known *skp;
+ unsigned short port = 0;
+ char *object;
+ struct smk_audit_info ad;
+#ifdef CONFIG_AUDIT
+ struct lsm_network_audit net;
+#endif
+
+ if (act == SMK_RECEIVING) {
+ skp = smack_net_ambient;
+ object = ssp->smk_in;
+ } else {
+ skp = ssp->smk_out;
+ object = smack_net_ambient->smk_known;
+ }
+
+ /*
+ * Get the IP address and port from the address.
+ */
+ addr6 = (struct sockaddr_in6 *)address;
+ port = ntohs(addr6->sin6_port);
+ bep = (__be16 *)(&addr6->sin6_addr);
+ be32p = (__be32 *)(&addr6->sin6_addr);
+
+ /*
+ * It's remote, so port lookup does no good.
+ */
+ if (be32p[0] || be32p[1] || be32p[2] || bep[6] || ntohs(bep[7]) != 1)
+ goto auditout;
+
+ /*
+ * It's local so the send check has to have passed.
+ */
+ if (act == SMK_RECEIVING) {
+ skp = &smack_known_web;
+ goto auditout;
+ }
+
+ list_for_each_entry(spp, &smk_ipv6_port_list, list) {
+ if (spp->smk_port != port)
+ continue;
+ object = spp->smk_in;
+ if (act == SMK_CONNECTING)
+ ssp->smk_packet = spp->smk_out->smk_known;
+ break;
+ }
+
+auditout:
+
+#ifdef CONFIG_AUDIT
+ smk_ad_init_net(&ad, __func__, LSM_AUDIT_DATA_NET, &net);
+ ad.a.u.net->family = sk->sk_family;
+ ad.a.u.net->dport = port;
+ if (act == SMK_RECEIVING)
+ ad.a.u.net->v6info.saddr = addr6->sin6_addr;
+ else
+ ad.a.u.net->v6info.daddr = addr6->sin6_addr;
+#endif
+ return smk_access(skp, object, MAY_WRITE, &ad);
+}
+
+/**
* smack_inode_setsecurity - set smack xattrs
* @inode: the object
* @name: attribute name
static int smack_inode_setsecurity(struct inode *inode, const char *name,
const void *value, size_t size, int flags)
{
- char *sp;
+ struct smack_known *skp;
struct inode_smack *nsp = inode->i_security;
struct socket_smack *ssp;
struct socket *sock;
if (value == NULL || size > SMK_LONGLABEL || size == 0)
return -EACCES;
- sp = smk_import(value, size);
- if (sp == NULL)
+ skp = smk_import_entry(value, size);
+ if (skp == NULL)
return -EINVAL;
if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
- nsp->smk_inode = sp;
+ nsp->smk_inode = skp->smk_known;
nsp->smk_flags |= SMK_INODE_INSTANT;
return 0;
}
ssp = sock->sk->sk_security;
if (strcmp(name, XATTR_SMACK_IPIN) == 0)
- ssp->smk_in = sp;
+ ssp->smk_in = skp->smk_known;
else if (strcmp(name, XATTR_SMACK_IPOUT) == 0) {
- ssp->smk_out = sp;
- if (sock->sk->sk_family != PF_UNIX) {
+ ssp->smk_out = skp;
+ if (sock->sk->sk_family == PF_INET) {
rc = smack_netlabel(sock->sk, SMACK_CIPSO_SOCKET);
if (rc != 0)
printk(KERN_WARNING
} else
return -EOPNOTSUPP;
+ if (sock->sk->sk_family == PF_INET6)
+ smk_ipv6_port_label(sock, NULL);
+
return 0;
}
}
/**
+ * smack_socket_bind - record port binding information.
+ * @sock: the socket
+ * @address: the port address
+ * @addrlen: size of the address
+ *
+ * Records the label bound to a port.
+ *
+ * Returns 0
+ */
+static int smack_socket_bind(struct socket *sock, struct sockaddr *address,
+ int addrlen)
+{
+ if (sock->sk != NULL && sock->sk->sk_family == PF_INET6)
+ smk_ipv6_port_label(sock, address);
+
+ return 0;
+}
+
+/**
* smack_socket_connect - connect access check
* @sock: the socket
* @sap: the other end
static int smack_socket_connect(struct socket *sock, struct sockaddr *sap,
int addrlen)
{
- if (sock->sk == NULL || sock->sk->sk_family != PF_INET)
+ int rc = 0;
+
+ if (sock->sk == NULL)
return 0;
- if (addrlen < sizeof(struct sockaddr_in))
- return -EINVAL;
- return smack_netlabel_send(sock->sk, (struct sockaddr_in *)sap);
+ switch (sock->sk->sk_family) {
+ case PF_INET:
+ if (addrlen < sizeof(struct sockaddr_in))
+ return -EINVAL;
+ rc = smack_netlabel_send(sock->sk, (struct sockaddr_in *)sap);
+ break;
+ case PF_INET6:
+ if (addrlen < sizeof(struct sockaddr_in6))
+ return -EINVAL;
+ rc = smk_ipv6_port_check(sock->sk, sap, SMK_CONNECTING);
+ break;
+ }
+ return rc;
}
/**
*/
static int smack_msg_msg_alloc_security(struct msg_msg *msg)
{
- msg->security = smk_of_current();
+ struct smack_known *skp = smk_of_current();
+
+ msg->security = skp->smk_known;
return 0;
}
static int smack_shm_alloc_security(struct shmid_kernel *shp)
{
struct kern_ipc_perm *isp = &shp->shm_perm;
+ struct smack_known *skp = smk_of_current();
- isp->security = smk_of_current();
+ isp->security = skp->smk_known;
return 0;
}
static int smack_sem_alloc_security(struct sem_array *sma)
{
struct kern_ipc_perm *isp = &sma->sem_perm;
+ struct smack_known *skp = smk_of_current();
- isp->security = smk_of_current();
+ isp->security = skp->smk_known;
return 0;
}
static int smack_msg_queue_alloc_security(struct msg_queue *msq)
{
struct kern_ipc_perm *kisp = &msq->q_perm;
+ struct smack_known *skp = smk_of_current();
- kisp->security = smk_of_current();
+ kisp->security = skp->smk_known;
return 0;
}
struct super_block *sbp;
struct superblock_smack *sbsp;
struct inode_smack *isp;
- char *csp = smk_of_current();
- char *fetched;
+ struct smack_known *skp;
+ struct smack_known *ckp = smk_of_current();
char *final;
char trattr[TRANS_TRUE_SIZE];
int transflag = 0;
* Programs that change smack have to treat the
* pty with respect.
*/
- final = csp;
+ final = ckp->smk_known;
break;
case SOCKFS_MAGIC:
/*
* Get the dentry for xattr.
*/
dp = dget(opt_dentry);
- fetched = smk_fetch(XATTR_NAME_SMACK, inode, dp);
- if (fetched != NULL)
- final = fetched;
+ skp = smk_fetch(XATTR_NAME_SMACK, inode, dp);
+ if (skp != NULL)
+ final = skp->smk_known;
/*
* Transmuting directory
}
if (final == NULL)
- isp->smk_inode = csp;
+ isp->smk_inode = ckp->smk_known;
else
isp->smk_inode = final;
*/
static int smack_getprocattr(struct task_struct *p, char *name, char **value)
{
+ struct smack_known *skp = smk_of_task(task_security(p));
char *cp;
int slen;
if (strcmp(name, "current") != 0)
return -EINVAL;
- cp = kstrdup(smk_of_task(task_security(p)), GFP_KERNEL);
+ cp = kstrdup(skp->smk_known, GFP_KERNEL);
if (cp == NULL)
return -ENOMEM;
{
struct task_smack *tsp;
struct cred *new;
- char *newsmack;
+ struct smack_known *skp;
/*
* Changing another process' Smack value is too dangerous
if (strcmp(name, "current") != 0)
return -EINVAL;
- newsmack = smk_import(value, size);
- if (newsmack == NULL)
+ skp = smk_import_entry(value, size);
+ if (skp == NULL)
return -EINVAL;
/*
* No process is ever allowed the web ("@") label.
*/
- if (newsmack == smack_known_web.smk_known)
+ if (skp == &smack_known_web)
return -EPERM;
new = prepare_creds();
return -ENOMEM;
tsp = new->security;
- tsp->smk_task = newsmack;
+ tsp->smk_task = skp;
commit_creds(new);
return size;
static int smack_unix_stream_connect(struct sock *sock,
struct sock *other, struct sock *newsk)
{
+ struct smack_known *skp;
struct socket_smack *ssp = sock->sk_security;
struct socket_smack *osp = other->sk_security;
struct socket_smack *nsp = newsk->sk_security;
smk_ad_setfield_u_net_sk(&ad, other);
#endif
- if (!smack_privileged(CAP_MAC_OVERRIDE))
- rc = smk_access(ssp->smk_out, osp->smk_in, MAY_WRITE, &ad);
+ if (!smack_privileged(CAP_MAC_OVERRIDE)) {
+ skp = ssp->smk_out;
+ rc = smk_access(skp, osp->smk_in, MAY_WRITE, &ad);
+ }
/*
* Cross reference the peer labels for SO_PEERSEC.
*/
if (rc == 0) {
- nsp->smk_packet = ssp->smk_out;
- ssp->smk_packet = osp->smk_out;
+ nsp->smk_packet = ssp->smk_out->smk_known;
+ ssp->smk_packet = osp->smk_out->smk_known;
}
return rc;
{
struct socket_smack *ssp = sock->sk->sk_security;
struct socket_smack *osp = other->sk->sk_security;
+ struct smack_known *skp;
struct smk_audit_info ad;
- int rc = 0;
#ifdef CONFIG_AUDIT
struct lsm_network_audit net;
smk_ad_setfield_u_net_sk(&ad, other->sk);
#endif
- if (!smack_privileged(CAP_MAC_OVERRIDE))
- rc = smk_access(ssp->smk_out, osp->smk_in, MAY_WRITE, &ad);
+ if (smack_privileged(CAP_MAC_OVERRIDE))
+ return 0;
- return rc;
+ skp = ssp->smk_out;
+ return smk_access(skp, osp->smk_in, MAY_WRITE, &ad);
}
/**
* @msg: the message
* @size: the size of the message
*
- * Return 0 if the current subject can write to the destination
- * host. This is only a question if the destination is a single
- * label host.
+ * Return 0 if the current subject can write to the destination host.
+ * For IPv4 this is only a question if the destination is a single label host.
+ * For IPv6 this is a check against the label of the port.
*/
static int smack_socket_sendmsg(struct socket *sock, struct msghdr *msg,
int size)
{
struct sockaddr_in *sip = (struct sockaddr_in *) msg->msg_name;
+ struct sockaddr *sap = (struct sockaddr *) msg->msg_name;
+ int rc = 0;
/*
* Perfectly reasonable for this to be NULL
*/
- if (sip == NULL || sip->sin_family != AF_INET)
+ if (sip == NULL)
return 0;
- return smack_netlabel_send(sock->sk, sip);
+ switch (sip->sin_family) {
+ case AF_INET:
+ rc = smack_netlabel_send(sock->sk, sip);
+ break;
+ case AF_INET6:
+ rc = smk_ipv6_port_check(sock->sk, sap, SMK_SENDING);
+ break;
+ }
+ return rc;
}
/**
* @sap: netlabel secattr
* @ssp: socket security information
*
- * Returns a pointer to a Smack label found on the label list.
+ * Returns a pointer to a Smack label entry found on the label list.
*/
-static char *smack_from_secattr(struct netlbl_lsm_secattr *sap,
- struct socket_smack *ssp)
+static struct smack_known *smack_from_secattr(struct netlbl_lsm_secattr *sap,
+ struct socket_smack *ssp)
{
- struct smack_known *kp;
- char *sp;
+ struct smack_known *skp;
int found = 0;
if ((sap->flags & NETLBL_SECATTR_MLS_LVL) != 0) {
* ambient value.
*/
rcu_read_lock();
- list_for_each_entry(kp, &smack_known_list, list) {
- if (sap->attr.mls.lvl != kp->smk_netlabel.attr.mls.lvl)
+ list_for_each_entry(skp, &smack_known_list, list) {
+ if (sap->attr.mls.lvl != skp->smk_netlabel.attr.mls.lvl)
continue;
if (memcmp(sap->attr.mls.cat,
- kp->smk_netlabel.attr.mls.cat,
+ skp->smk_netlabel.attr.mls.cat,
SMK_CIPSOLEN) != 0)
continue;
found = 1;
rcu_read_unlock();
if (found)
- return kp->smk_known;
+ return skp;
if (ssp != NULL && ssp->smk_in == smack_known_star.smk_known)
- return smack_known_web.smk_known;
- return smack_known_star.smk_known;
+ return &smack_known_web;
+ return &smack_known_star;
}
if ((sap->flags & NETLBL_SECATTR_SECID) != 0) {
/*
* Looks like a fallback, which gives us a secid.
*/
- sp = smack_from_secid(sap->attr.secid);
+ skp = smack_from_secid(sap->attr.secid);
/*
* This has got to be a bug because it is
* impossible to specify a fallback without
* it has a secid, and the only way to get a
* secid is from a fallback.
*/
- BUG_ON(sp == NULL);
- return sp;
+ BUG_ON(skp == NULL);
+ return skp;
}
/*
* Without guidance regarding the smack value
return smack_net_ambient;
}
+static int smk_skb_to_addr_ipv6(struct sk_buff *skb, struct sockaddr *sap)
+{
+ struct sockaddr_in6 *sip = (struct sockaddr_in6 *)sap;
+ u8 nexthdr;
+ int offset;
+ int proto = -EINVAL;
+ struct ipv6hdr _ipv6h;
+ struct ipv6hdr *ip6;
+ __be16 frag_off;
+ struct tcphdr _tcph, *th;
+ struct udphdr _udph, *uh;
+ struct dccp_hdr _dccph, *dh;
+
+ sip->sin6_port = 0;
+
+ offset = skb_network_offset(skb);
+ ip6 = skb_header_pointer(skb, offset, sizeof(_ipv6h), &_ipv6h);
+ if (ip6 == NULL)
+ return -EINVAL;
+ sip->sin6_addr = ip6->saddr;
+
+ nexthdr = ip6->nexthdr;
+ offset += sizeof(_ipv6h);
+ offset = ipv6_skip_exthdr(skb, offset, &nexthdr, &frag_off);
+ if (offset < 0)
+ return -EINVAL;
+
+ proto = nexthdr;
+ switch (proto) {
+ case IPPROTO_TCP:
+ th = skb_header_pointer(skb, offset, sizeof(_tcph), &_tcph);
+ if (th != NULL)
+ sip->sin6_port = th->source;
+ break;
+ case IPPROTO_UDP:
+ uh = skb_header_pointer(skb, offset, sizeof(_udph), &_udph);
+ if (uh != NULL)
+ sip->sin6_port = uh->source;
+ break;
+ case IPPROTO_DCCP:
+ dh = skb_header_pointer(skb, offset, sizeof(_dccph), &_dccph);
+ if (dh != NULL)
+ sip->sin6_port = dh->dccph_sport;
+ break;
+ }
+ return proto;
+}
+
/**
* smack_socket_sock_rcv_skb - Smack packet delivery access check
* @sk: socket
{
struct netlbl_lsm_secattr secattr;
struct socket_smack *ssp = sk->sk_security;
- char *csp;
- int rc;
+ struct smack_known *skp;
+ struct sockaddr sadd;
+ int rc = 0;
struct smk_audit_info ad;
#ifdef CONFIG_AUDIT
struct lsm_network_audit net;
#endif
- if (sk->sk_family != PF_INET && sk->sk_family != PF_INET6)
- return 0;
-
- /*
- * Translate what netlabel gave us.
- */
- netlbl_secattr_init(&secattr);
+ switch (sk->sk_family) {
+ case PF_INET:
+ /*
+ * Translate what netlabel gave us.
+ */
+ netlbl_secattr_init(&secattr);
- rc = netlbl_skbuff_getattr(skb, sk->sk_family, &secattr);
- if (rc == 0)
- csp = smack_from_secattr(&secattr, ssp);
- else
- csp = smack_net_ambient;
+ rc = netlbl_skbuff_getattr(skb, sk->sk_family, &secattr);
+ if (rc == 0)
+ skp = smack_from_secattr(&secattr, ssp);
+ else
+ skp = smack_net_ambient;
- netlbl_secattr_destroy(&secattr);
+ netlbl_secattr_destroy(&secattr);
#ifdef CONFIG_AUDIT
- smk_ad_init_net(&ad, __func__, LSM_AUDIT_DATA_NET, &net);
- ad.a.u.net->family = sk->sk_family;
- ad.a.u.net->netif = skb->skb_iif;
- ipv4_skb_to_auditdata(skb, &ad.a, NULL);
+ smk_ad_init_net(&ad, __func__, LSM_AUDIT_DATA_NET, &net);
+ ad.a.u.net->family = sk->sk_family;
+ ad.a.u.net->netif = skb->skb_iif;
+ ipv4_skb_to_auditdata(skb, &ad.a, NULL);
#endif
- /*
- * Receiving a packet requires that the other end
- * be able to write here. Read access is not required.
- * This is the simplist possible security model
- * for networking.
- */
- rc = smk_access(csp, ssp->smk_in, MAY_WRITE, &ad);
- if (rc != 0)
- netlbl_skbuff_err(skb, rc, 0);
+ /*
+ * Receiving a packet requires that the other end
+ * be able to write here. Read access is not required.
+ * This is the simplist possible security model
+ * for networking.
+ */
+ rc = smk_access(skp, ssp->smk_in, MAY_WRITE, &ad);
+ if (rc != 0)
+ netlbl_skbuff_err(skb, rc, 0);
+ break;
+ case PF_INET6:
+ rc = smk_skb_to_addr_ipv6(skb, &sadd);
+ if (rc == IPPROTO_UDP || rc == IPPROTO_TCP)
+ rc = smk_ipv6_port_check(sk, &sadd, SMK_RECEIVING);
+ else
+ rc = 0;
+ break;
+ }
return rc;
}
{
struct netlbl_lsm_secattr secattr;
struct socket_smack *ssp = NULL;
- char *sp;
+ struct smack_known *skp;
int family = PF_UNSPEC;
u32 s = 0; /* 0 is the invalid secid */
int rc;
if (family == PF_UNIX) {
ssp = sock->sk->sk_security;
- s = smack_to_secid(ssp->smk_out);
+ s = ssp->smk_out->smk_secid;
} else if (family == PF_INET || family == PF_INET6) {
/*
* Translate what netlabel gave us.
netlbl_secattr_init(&secattr);
rc = netlbl_skbuff_getattr(skb, family, &secattr);
if (rc == 0) {
- sp = smack_from_secattr(&secattr, ssp);
- s = smack_to_secid(sp);
+ skp = smack_from_secattr(&secattr, ssp);
+ s = skp->smk_secid;
}
netlbl_secattr_destroy(&secattr);
}
static void smack_sock_graft(struct sock *sk, struct socket *parent)
{
struct socket_smack *ssp;
+ struct smack_known *skp = smk_of_current();
if (sk == NULL ||
(sk->sk_family != PF_INET && sk->sk_family != PF_INET6))
return;
ssp = sk->sk_security;
- ssp->smk_in = ssp->smk_out = smk_of_current();
+ ssp->smk_in = skp->smk_known;
+ ssp->smk_out = skp;
/* cssp->smk_packet is already set in smack_inet_csk_clone() */
}
struct netlbl_lsm_secattr secattr;
struct sockaddr_in addr;
struct iphdr *hdr;
- char *sp;
char *hsp;
int rc;
struct smk_audit_info ad;
struct lsm_network_audit net;
#endif
- /* handle mapped IPv4 packets arriving via IPv6 sockets */
- if (family == PF_INET6 && skb->protocol == htons(ETH_P_IP))
- family = PF_INET;
+ if (family == PF_INET6) {
+ /*
+ * Handle mapped IPv4 packets arriving
+ * via IPv6 sockets. Don't set up netlabel
+ * processing on IPv6.
+ */
+ if (skb->protocol == htons(ETH_P_IP))
+ family = PF_INET;
+ else
+ return 0;
+ }
netlbl_secattr_init(&secattr);
rc = netlbl_skbuff_getattr(skb, family, &secattr);
if (rc == 0)
- sp = smack_from_secattr(&secattr, ssp);
+ skp = smack_from_secattr(&secattr, ssp);
else
- sp = smack_known_huh.smk_known;
+ skp = &smack_known_huh;
netlbl_secattr_destroy(&secattr);
#ifdef CONFIG_AUDIT
* Receiving a packet requires that the other end be able to write
* here. Read access is not required.
*/
- rc = smk_access(sp, ssp->smk_in, MAY_WRITE, &ad);
+ rc = smk_access(skp, ssp->smk_in, MAY_WRITE, &ad);
if (rc != 0)
return rc;
* Save the peer's label in the request_sock so we can later setup
* smk_packet in the child socket so that SO_PEERCRED can report it.
*/
- req->peer_secid = smack_to_secid(sp);
+ req->peer_secid = skp->smk_secid;
/*
* We need to decide if we want to label the incoming connection here
hsp = smack_host_label(&addr);
rcu_read_unlock();
- if (hsp == NULL) {
- skp = smk_find_entry(sp);
+ if (hsp == NULL)
rc = netlbl_req_setattr(req, &skp->smk_netlabel);
- } else
+ else
netlbl_req_delattr(req);
return rc;
const struct request_sock *req)
{
struct socket_smack *ssp = sk->sk_security;
+ struct smack_known *skp;
- if (req->peer_secid != 0)
- ssp->smk_packet = smack_from_secid(req->peer_secid);
- else
+ if (req->peer_secid != 0) {
+ skp = smack_from_secid(req->peer_secid);
+ ssp->smk_packet = skp->smk_known;
+ } else
ssp->smk_packet = NULL;
}
static int smack_key_alloc(struct key *key, const struct cred *cred,
unsigned long flags)
{
- key->security = smk_of_task(cred->security);
+ struct smack_known *skp = smk_of_task(cred->security);
+
+ key->security = skp->smk_known;
return 0;
}
{
struct key *keyp;
struct smk_audit_info ad;
- char *tsp = smk_of_task(cred->security);
+ struct smack_known *tkp = smk_of_task(cred->security);
keyp = key_ref_to_ptr(key_ref);
if (keyp == NULL)
/*
* This should not occur
*/
- if (tsp == NULL)
+ if (tkp == NULL)
return -EACCES;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_KEY);
ad.a.u.key_struct.key = keyp->serial;
ad.a.u.key_struct.key_desc = keyp->description;
#endif
- return smk_access(tsp, keyp->security,
- MAY_READWRITE, &ad);
+ return smk_access(tkp, keyp->security, MAY_READWRITE, &ad);
}
#endif /* CONFIG_KEYS */
static int smack_audit_rule_match(u32 secid, u32 field, u32 op, void *vrule,
struct audit_context *actx)
{
- char *smack;
+ struct smack_known *skp;
char *rule = vrule;
if (!rule) {
if (field != AUDIT_SUBJ_USER && field != AUDIT_OBJ_USER)
return 0;
- smack = smack_from_secid(secid);
+ skp = smack_from_secid(secid);
/*
* No need to do string comparisons. If a match occurs,
* label.
*/
if (op == Audit_equal)
- return (rule == smack);
+ return (rule == skp->smk_known);
if (op == Audit_not_equal)
- return (rule != smack);
+ return (rule != skp->smk_known);
return 0;
}
#endif /* CONFIG_AUDIT */
/**
+ * smack_ismaclabel - check if xattr @name references a smack MAC label
+ * @name: Full xattr name to check.
+ */
+ static int smack_ismaclabel(const char *name)
+ {
+ return (strcmp(name, XATTR_SMACK_SUFFIX) == 0);
+ }
+
+
+ /**
* smack_secid_to_secctx - return the smack label for a secid
* @secid: incoming integer
* @secdata: destination
*/
static int smack_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
{
- char *sp = smack_from_secid(secid);
+ struct smack_known *skp = smack_from_secid(secid);
if (secdata)
- *secdata = sp;
- *seclen = strlen(sp);
+ *secdata = skp->smk_known;
+ *seclen = strlen(skp->smk_known);
return 0;
}
.unix_may_send = smack_unix_may_send,
.socket_post_create = smack_socket_post_create,
+ .socket_bind = smack_socket_bind,
.socket_connect = smack_socket_connect,
.socket_sendmsg = smack_socket_sendmsg,
.socket_sock_rcv_skb = smack_socket_sock_rcv_skb,
.audit_rule_free = smack_audit_rule_free,
#endif /* CONFIG_AUDIT */
+ .ismaclabel = smack_ismaclabel,
.secid_to_secctx = smack_secid_to_secctx,
.secctx_to_secid = smack_secctx_to_secid,
.release_secctx = smack_release_secctx,
if (!security_module_enable(&smack_ops))
return 0;
- tsp = new_task_smack(smack_known_floor.smk_known,
- smack_known_floor.smk_known, GFP_KERNEL);
+ tsp = new_task_smack(&smack_known_floor, &smack_known_floor,
+ GFP_KERNEL);
if (tsp == NULL)
return -ENOMEM;
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff