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Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c94
1 files changed, 51 insertions, 43 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 5d051419527..e474ca2b2bf 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -33,6 +33,7 @@
#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>
@@ -436,6 +437,7 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
struct dentry *alias;
struct inode *dir = parent->d_inode;
struct inode *inode;
+ int status;
if (filename.name[0] == '.') {
if (filename.len == 1)
@@ -448,7 +450,10 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
dentry = d_lookup(parent, &filename);
if (dentry != NULL) {
if (nfs_same_file(dentry, entry)) {
- nfs_refresh_inode(dentry->d_inode, entry->fattr);
+ nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
+ 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)
@@ -461,7 +466,7 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
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;
@@ -586,10 +591,16 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
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;
@@ -615,6 +626,8 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
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);
@@ -805,7 +818,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
nfs_readdir_descriptor_t my_desc,
*desc = &my_desc;
struct nfs_open_dir_context *dir_ctx = file->private_data;
- int res;
+ int res = 0;
dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
@@ -827,7 +840,8 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0;
nfs_block_sillyrename(dentry);
- res = nfs_revalidate_mapping(inode, file->f_mapping);
+ if (ctx->pos == 0 || nfs_attribute_cache_expired(inode))
+ res = nfs_revalidate_mapping(inode, file->f_mapping);
if (res < 0)
goto out;
@@ -1039,6 +1053,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
struct dentry *parent;
struct nfs_fh *fhandle = NULL;
struct nfs_fattr *fattr = NULL;
+ struct nfs4_label *label = NULL;
int error;
if (flags & LOOKUP_RCU)
@@ -1081,7 +1096,11 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
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))
@@ -1089,8 +1108,12 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
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:
@@ -1107,6 +1130,7 @@ out_zap_parent:
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. */
@@ -1127,6 +1151,7 @@ out_zap_parent:
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,
@@ -1255,6 +1280,7 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
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",
@@ -1281,17 +1307,21 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
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;
@@ -1309,6 +1339,7 @@ no_entry:
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);
@@ -1356,18 +1387,6 @@ static int nfs_finish_open(struct nfs_open_context *ctx,
{
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;
@@ -1426,13 +1445,13 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
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:
@@ -1448,16 +1467,8 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
}
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;
@@ -1527,7 +1538,8 @@ no_open:
* 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;
@@ -1540,18 +1552,18 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle,
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;
@@ -1720,7 +1732,7 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry)
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);
@@ -1758,7 +1770,6 @@ EXPORT_SYMBOL_GPL(nfs_unlink);
*/
int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
{
- struct pagevec lru_pvec;
struct page *page;
char *kaddr;
struct iattr attr;
@@ -1798,11 +1809,8 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
* 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
@@ -1869,7 +1877,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
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,
@@ -1887,7 +1895,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
rehash = new_dentry;
}
- if (new_dentry->d_count > 2) {
+ if (d_count(new_dentry) > 2) {
int err;
/* copy the target dentry's name */
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-01 11:37:29 +0000