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path: root/fs/nfsd/export.c
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Diffstat (limited to 'fs/nfsd/export.c')
-rw-r--r--fs/nfsd/export.c125
1 files changed, 58 insertions, 67 deletions
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 5cd882b8871..5839b229cd0 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -163,18 +163,16 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
if (!ek)
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)
err = -ENOMEM;
- path_put(&nd.path);
+ path_put(&key.ek_path);
}
cache_flush();
out:
@@ -501,35 +499,22 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
int len;
int err;
struct auth_domain *dom = NULL;
- struct nameidata nd;
- struct svc_export exp, *expp;
+ struct svc_export exp = {}, *expp;
int an_int;
- nd.path.dentry = NULL;
- exp.ex_pathname = NULL;
-
- /* fs locations */
- exp.ex_fslocs.locations = NULL;
- exp.ex_fslocs.locations_count = 0;
- exp.ex_fslocs.migrated = 0;
-
- exp.ex_uuid = NULL;
-
- /* secinfo */
- exp.ex_nflavors = 0;
-
if (mesg[mlen-1] != '\n')
return -EINVAL;
mesg[mlen-1] = 0;
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
- err = -ENOMEM;
- if (!buf) goto out;
+ if (!buf)
+ return -ENOMEM;
/* client */
- len = qword_get(&mesg, buf, PAGE_SIZE);
err = -EINVAL;
- if (len <= 0) goto out;
+ len = qword_get(&mesg, buf, PAGE_SIZE);
+ if (len <= 0)
+ goto out;
err = -ENOENT;
dom = auth_domain_find(buf);
@@ -538,25 +523,25 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
/* path */
err = -EINVAL;
- if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
- goto out;
- err = path_lookup(buf, 0, &nd);
- if (err) goto out_no_path;
+ if ((len = qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
+ goto out1;
+
+ err = kern_path(buf, 0, &exp.ex_path);
+ if (err)
+ goto out1;
- exp.h.flags = 0;
exp.ex_client = dom;
- exp.ex_path.mnt = nd.path.mnt;
- exp.ex_path.dentry = nd.path.dentry;
- exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
+
err = -ENOMEM;
+ exp.ex_pathname = kstrdup(buf, GFP_KERNEL);
if (!exp.ex_pathname)
- goto out;
+ goto out2;
/* expiry */
err = -EINVAL;
exp.h.expiry_time = get_expiry(&mesg);
if (exp.h.expiry_time == 0)
- goto out;
+ goto out3;
/* flags */
err = get_int(&mesg, &an_int);
@@ -564,22 +549,26 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
err = 0;
set_bit(CACHE_NEGATIVE, &exp.h.flags);
} else {
- if (err || an_int < 0) goto out;
+ if (err || an_int < 0)
+ goto out3;
exp.ex_flags= an_int;
/* anon uid */
err = get_int(&mesg, &an_int);
- if (err) goto out;
+ if (err)
+ goto out3;
exp.ex_anon_uid= an_int;
/* anon gid */
err = get_int(&mesg, &an_int);
- if (err) goto out;
+ if (err)
+ goto out3;
exp.ex_anon_gid= an_int;
/* fsid */
err = get_int(&mesg, &an_int);
- if (err) goto out;
+ if (err)
+ goto out3;
exp.ex_fsid = an_int;
while ((len = qword_get(&mesg, buf, PAGE_SIZE)) > 0) {
@@ -605,12 +594,13 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
*/
break;
if (err)
- goto out;
+ goto out4;
}
- err = check_export(nd.path.dentry->d_inode, exp.ex_flags,
+ err = check_export(exp.ex_path.dentry->d_inode, exp.ex_flags,
exp.ex_uuid);
- if (err) goto out;
+ if (err)
+ goto out4;
}
expp = svc_export_lookup(&exp);
@@ -623,15 +613,16 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
err = -ENOMEM;
else
exp_put(expp);
- out:
+out4:
nfsd4_fslocs_free(&exp.ex_fslocs);
kfree(exp.ex_uuid);
+out3:
kfree(exp.ex_pathname);
- if (nd.path.dentry)
- path_put(&nd.path);
- out_no_path:
- if (dom)
- auth_domain_put(dom);
+out2:
+ path_put(&exp.ex_path);
+out1:
+ auth_domain_put(dom);
+out:
kfree(buf);
return err;
}
@@ -999,7 +990,7 @@ 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 */
@@ -1022,12 +1013,12 @@ 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));
@@ -1035,8 +1026,8 @@ 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)) {
@@ -1052,7 +1043,7 @@ 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;
@@ -1065,7 +1056,7 @@ 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;
@@ -1091,7 +1082,7 @@ 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:
@@ -1122,7 +1113,7 @@ exp_unexport(struct nfsctl_export *nxp)
{
struct auth_domain *dom;
svc_export *exp;
- struct nameidata nd;
+ struct path path;
int err;
/* Consistency check */
@@ -1139,13 +1130,13 @@ 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;
@@ -1167,26 +1158,26 @@ 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;
@@ -1196,7 +1187,7 @@ 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;
@@ -1204,7 +1195,7 @@ 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;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 05:53:03 +0000