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NFSv3: use nfs_add_or_obtain() to create and reference inodes 

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Benjamin Coddington 2019-09-13 08:29:03 -04:00 committed by Anna Schumaker
parent 406cd91533
commit 17fd6e457b
1 changed files with 36 additions and 9 deletions
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45
fs/nfs/nfs3proc.c
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@ -279,15 +279,17 @@ static struct nfs3_createdata *nfs3_alloc_createdata(void)
return data;
}
static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
static struct dentry *
nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
{
int status;
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, NULL);
return status;
if (status != 0)
return ERR_PTR(status);
return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr, NULL);
}
static void nfs3_free_createdata(struct nfs3_createdata *data)
@ -304,6 +306,7 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
{
struct posix_acl *default_acl, *acl;
struct nfs3_createdata *data;
struct dentry *d_alias;
int status = -ENOMEM;
dprintk("NFS call create %pd\n", dentry);
@ -330,7 +333,8 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
goto out;
for (;;) {
status = nfs3_do_create(dir, dentry, data);
d_alias = nfs3_do_create(dir, dentry, data);
status = PTR_ERR_OR_ZERO(d_alias);
if (status != -ENOTSUPP)
break;
@ -355,6 +359,9 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
if (status != 0)
goto out_release_acls;
if (d_alias)
dentry = d_alias;
/* When we created the file with exclusive semantics, make
* sure we set the attributes afterwards. */
if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
@ -372,11 +379,13 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
dprintk("NFS reply setattr (post-create): %d\n", status);
if (status != 0)
goto out_release_acls;
goto out_dput;
}
status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
out_dput:
dput(d_alias);
out_release_acls:
posix_acl_release(acl);
posix_acl_release(default_acl);
@ -504,6 +513,7 @@ nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
unsigned int len, struct iattr *sattr)
{
struct nfs3_createdata *data;
struct dentry *d_alias;
int status = -ENOMEM;
if (len > NFS3_MAXPATHLEN)
@ -522,7 +532,11 @@ nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
data->arg.symlink.pathlen = len;
data->arg.symlink.sattr = sattr;
status = nfs3_do_create(dir, dentry, data);
d_alias = nfs3_do_create(dir, dentry, data);
status = PTR_ERR_OR_ZERO(d_alias);
if (status == 0)
dput(d_alias);
nfs3_free_createdata(data);
out:
@ -535,6 +549,7 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
{
struct posix_acl *default_acl, *acl;
struct nfs3_createdata *data;
struct dentry *d_alias;
int status = -ENOMEM;
dprintk("NFS call mkdir %pd\n", dentry);
@ -553,12 +568,18 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
data->arg.mkdir.len = dentry->d_name.len;
data->arg.mkdir.sattr = sattr;
status = nfs3_do_create(dir, dentry, data);
d_alias = nfs3_do_create(dir, dentry, data);
status = PTR_ERR_OR_ZERO(d_alias);
if (status != 0)
goto out_release_acls;
if (d_alias)
dentry = d_alias;
status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
dput(d_alias);
out_release_acls:
posix_acl_release(acl);
posix_acl_release(default_acl);
@ -660,6 +681,7 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
{
struct posix_acl *default_acl, *acl;
struct nfs3_createdata *data;
struct dentry *d_alias;
int status = -ENOMEM;
dprintk("NFS call mknod %pd %u:%u\n", dentry,
@ -698,12 +720,17 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
goto out;
}
status = nfs3_do_create(dir, dentry, data);
d_alias = nfs3_do_create(dir, dentry, data);
status = PTR_ERR_OR_ZERO(d_alias);
if (status != 0)
goto out_release_acls;
if (d_alias)
dentry = d_alias;
status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
dput(d_alias);
out_release_acls:
posix_acl_release(acl);
posix_acl_release(default_acl);