Create a nameidata2 struct in nfsd and mqueue so that vfs_create does
need to conditionally pass the vfsmnt.
Signed-off-by: Andreas Gruenbacher <[email protected]>
---
fs/namei.c | 2 +-
fs/nfsd/vfs.c | 42 +++++++++++++++++++++++++-----------------
ipc/mqueue.c | 7 ++++++-
3 files changed, 32 insertions(+), 19 deletions(-)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1532,7 +1532,7 @@ int vfs_create(struct inode *dir, struct
return -EACCES; /* shouldn't it be ENOSYS? */
mode &= S_IALLUGO;
mode |= S_IFREG;
- error = security_inode_create(dir, dentry, nd ? nd->mnt : NULL, mode);
+ error = security_inode_create(dir, dentry, nd->mnt, mode);
if (error)
return error;
DQUOT_INIT(dir);
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1121,7 +1121,8 @@ nfsd_create(struct svc_rqst *rqstp, stru
char *fname, int flen, struct iattr *iap,
int type, dev_t rdev, struct svc_fh *resfhp)
{
- struct dentry *dentry, *dchild = NULL;
+ struct nameidata2 nd;
+ struct dentry *dchild = NULL;
struct svc_export *exp;
struct inode *dirp;
__be32 err;
@@ -1138,9 +1139,11 @@ nfsd_create(struct svc_rqst *rqstp, stru
if (err)
goto out;
- dentry = fhp->fh_dentry;
+ nd.dentry = fhp->fh_dentry;
exp = fhp->fh_export;
- dirp = dentry->d_inode;
+ nd.mnt = exp->ex_mnt;
+ nd.flags = 0;
+ dirp = nd.dentry->d_inode;
err = nfserr_notdir;
if(!dirp->i_op || !dirp->i_op->lookup)
@@ -1152,7 +1155,7 @@ nfsd_create(struct svc_rqst *rqstp, stru
if (!resfhp->fh_dentry) {
/* called from nfsd_proc_mkdir, or possibly nfsd3_proc_create */
fh_lock_nested(fhp, I_MUTEX_PARENT);
- dchild = lookup_one_len(fname, dentry, flen);
+ dchild = lookup_one_len(fname, nd.dentry, flen);
host_err = PTR_ERR(dchild);
if (IS_ERR(dchild))
goto out_nfserr;
@@ -1166,8 +1169,8 @@ nfsd_create(struct svc_rqst *rqstp, stru
/* not actually possible */
printk(KERN_ERR
"nfsd_create: parent %s/%s not locked!\n",
- dentry->d_parent->d_name.name,
- dentry->d_name.name);
+ nd.dentry->d_parent->d_name.name,
+ nd.dentry->d_name.name);
err = nfserr_io;
goto out;
}
@@ -1178,7 +1181,7 @@ nfsd_create(struct svc_rqst *rqstp, stru
err = nfserr_exist;
if (dchild->d_inode) {
dprintk("nfsd_create: dentry %s/%s not negative!\n",
- dentry->d_name.name, dchild->d_name.name);
+ nd.dentry->d_name.name, dchild->d_name.name);
goto out;
}
@@ -1192,7 +1195,7 @@ nfsd_create(struct svc_rqst *rqstp, stru
err = 0;
switch (type) {
case S_IFREG:
- host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
+ host_err = vfs_create(nd.dentry->d_inode, dchild, iap->ia_mode, &nd);
break;
case S_IFDIR:
host_err = vfs_mkdir(dirp, dchild, exp->ex_mnt, iap->ia_mode);
@@ -1212,7 +1215,7 @@ nfsd_create(struct svc_rqst *rqstp, stru
goto out_nfserr;
if (EX_ISSYNC(exp)) {
- err = nfserrno(nfsd_sync_dir(dentry));
+ err = nfserrno(nfsd_sync_dir(nd.dentry));
write_inode_now(dchild->d_inode, 1);
}
@@ -1252,7 +1255,9 @@ nfsd_create_v3(struct svc_rqst *rqstp, s
struct svc_fh *resfhp, int createmode, u32 *verifier,
int *truncp, int *created)
{
- struct dentry *dentry, *dchild = NULL;
+ struct nameidata2 nd;
+ struct dentry *dchild = NULL;
+ struct svc_export *exp;
struct inode *dirp;
__be32 err;
int host_err;
@@ -1270,8 +1275,11 @@ nfsd_create_v3(struct svc_rqst *rqstp, s
if (err)
goto out;
- dentry = fhp->fh_dentry;
- dirp = dentry->d_inode;
+ nd.dentry = fhp->fh_dentry;
+ exp = fhp->fh_export;
+ nd.mnt = exp->ex_mnt;
+ nd.flags = 0;
+ dirp = nd.dentry->d_inode;
/* Get all the sanity checks out of the way before
* we lock the parent. */
@@ -1283,12 +1291,12 @@ nfsd_create_v3(struct svc_rqst *rqstp, s
/*
* Compose the response file handle.
*/
- dchild = lookup_one_len(fname, dentry, flen);
+ dchild = lookup_one_len(fname, nd.dentry, flen);
host_err = PTR_ERR(dchild);
if (IS_ERR(dchild))
goto out_nfserr;
- err = fh_compose(resfhp, fhp->fh_export, dchild, fhp);
+ err = fh_compose(resfhp, exp, dchild, fhp);
if (err)
goto out;
@@ -1334,14 +1342,14 @@ nfsd_create_v3(struct svc_rqst *rqstp, s
goto out;
}
- host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
+ host_err = vfs_create(nd.dentry->d_inode, dchild, iap->ia_mode, &nd);
if (host_err < 0)
goto out_nfserr;
if (created)
*created = 1;
- if (EX_ISSYNC(fhp->fh_export)) {
- err = nfserrno(nfsd_sync_dir(dentry));
+ if (EX_ISSYNC(exp)) {
+ err = nfserrno(nfsd_sync_dir(nd.dentry));
/* setattr will sync the child (or not) */
}
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -603,9 +603,14 @@ static int mq_attr_ok(struct mq_attr *at
static struct file *do_create(struct dentry *dir, struct dentry *dentry,
int oflag, mode_t mode, struct mq_attr __user *u_attr)
{
+ struct nameidata2 nd;
struct mq_attr attr;
int ret;
+ nd.dentry = dir;
+ nd.mnt = NULL; /* Not a mounted filesystem */
+ nd.flags = 0;
+
if (u_attr) {
ret = -EFAULT;
if (copy_from_user(&attr, u_attr, sizeof(attr)))
@@ -618,7 +623,7 @@ static struct file *do_create(struct den
}
mode &= ~current->fs->umask;
- ret = vfs_create(dir->d_inode, dentry, mode, NULL);
+ ret = vfs_create(dir->d_inode, dentry, mode, &nd);
dentry->d_fsdata = NULL;
if (ret)
goto out;
--
-
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