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[PATCH] switch nfsd to kern_path()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2008-08-02 01:03:36 -04:00
parent c1a2a4756d
commit a63bb99660
4 changed files with 56 additions and 58 deletions
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48
fs/nfsd/export.c
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@ -162,20 +162,18 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
cache_put(&ek->h, &svc_expkey_cache);
else err = -ENOMEM;
} else {
struct nameidata nd;
err = path_lookup(buf, 0, &nd);
err = kern_path(buf, 0, &key.ek_path);
if (err)
goto out;
dprintk("Found the path %s\n", buf);
key.ek_path = nd.path;
ek = svc_expkey_update(&key, ek);
if (ek)
cache_put(&ek->h, &svc_expkey_cache);
else
err = -ENOMEM;
path_put(&nd.path);
path_put(&key.ek_path);
}
cache_flush();
out:
@ -991,7 +989,7 @@ exp_export(struct nfsctl_export *nxp)
struct svc_export *exp = NULL;
struct svc_export new;
struct svc_expkey *fsid_key = NULL;
struct nameidata nd;
struct path path;
int err;
/* Consistency check */
@ -1014,12 +1012,12 @@ exp_export(struct nfsctl_export *nxp)
/* Look up the dentry */
err = path_lookup(nxp->ex_path, 0, &nd);
err = kern_path(nxp->ex_path, 0, &path);
if (err)
goto out_put_clp;
err = -EINVAL;
exp = exp_get_by_name(clp, nd.path.mnt, nd.path.dentry, NULL);
exp = exp_get_by_name(clp, path.mnt, path.dentry, NULL);
memset(&new, 0, sizeof(new));
@ -1027,8 +1025,8 @@ exp_export(struct nfsctl_export *nxp)
if ((nxp->ex_flags & NFSEXP_FSID) &&
(!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
fsid_key->ek_path.mnt &&
(fsid_key->ek_path.mnt != nd.path.mnt ||
fsid_key->ek_path.dentry != nd.path.dentry))
(fsid_key->ek_path.mnt != path.mnt ||
fsid_key->ek_path.dentry != path.dentry))
goto finish;
if (!IS_ERR(exp)) {
@ -1044,7 +1042,7 @@ exp_export(struct nfsctl_export *nxp)
goto finish;
}
err = check_export(nd.path.dentry->d_inode, nxp->ex_flags, NULL);
err = check_export(path.dentry->d_inode, nxp->ex_flags, NULL);
if (err) goto finish;
err = -ENOMEM;
@ -1057,7 +1055,7 @@ exp_export(struct nfsctl_export *nxp)
if (!new.ex_pathname)
goto finish;
new.ex_client = clp;
new.ex_path = nd.path;
new.ex_path = path;
new.ex_flags = nxp->ex_flags;
new.ex_anon_uid = nxp->ex_anon_uid;
new.ex_anon_gid = nxp->ex_anon_gid;
@ -1083,7 +1081,7 @@ finish:
exp_put(exp);
if (fsid_key && !IS_ERR(fsid_key))
cache_put(&fsid_key->h, &svc_expkey_cache);
path_put(&nd.path);
path_put(&path);
out_put_clp:
auth_domain_put(clp);
out_unlock:
@ -1114,7 +1112,7 @@ exp_unexport(struct nfsctl_export *nxp)
{
struct auth_domain *dom;
svc_export *exp;
struct nameidata nd;
struct path path;
int err;
/* Consistency check */
@ -1131,13 +1129,13 @@ exp_unexport(struct nfsctl_export *nxp)
goto out_unlock;
}
err = path_lookup(nxp->ex_path, 0, &nd);
err = kern_path(nxp->ex_path, 0, &path);
if (err)
goto out_domain;
err = -EINVAL;
exp = exp_get_by_name(dom, nd.path.mnt, nd.path.dentry, NULL);
path_put(&nd.path);
exp = exp_get_by_name(dom, path.mnt, path.dentry, NULL);
path_put(&path);
if (IS_ERR(exp))
goto out_domain;
@ -1159,26 +1157,26 @@ out_unlock:
* since its harder to fool a kernel module than a user space program.
*/
int
exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
{
struct svc_export *exp;
struct nameidata nd;
struct path path;
struct inode *inode;
struct svc_fh fh;
int err;
err = -EPERM;
/* NB: we probably ought to check that it's NUL-terminated */
if (path_lookup(path, 0, &nd)) {
printk("nfsd: exp_rootfh path not found %s", path);
if (kern_path(name, 0, &path)) {
printk("nfsd: exp_rootfh path not found %s", name);
return err;
}
inode = nd.path.dentry->d_inode;
inode = path.dentry->d_inode;
dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
path, nd.path.dentry, clp->name,
name, path.dentry, clp->name,
inode->i_sb->s_id, inode->i_ino);
exp = exp_parent(clp, nd.path.mnt, nd.path.dentry, NULL);
exp = exp_parent(clp, path.mnt, path.dentry, NULL);
if (IS_ERR(exp)) {
err = PTR_ERR(exp);
goto out;
@ -1188,7 +1186,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
* fh must be initialized before calling fh_compose
*/
fh_init(&fh, maxsize);
if (fh_compose(&fh, exp, nd.path.dentry, NULL))
if (fh_compose(&fh, exp, path.dentry, NULL))
err = -EINVAL;
else
err = 0;
@ -1196,7 +1194,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
fh_put(&fh);
exp_put(exp);
out:
path_put(&nd.path);
path_put(&path);
return err;
}