Merge branch 'for-2.6.40' of git://linux-nfs.org/~bfields/linux

* 'for-2.6.40' of git://linux-nfs.org/~bfields/linux:
  nfsd4: fix break_lease flags on nfsd open
  nfsd: link returns nfserr_delay when breaking lease
  nfsd: v4 support requires CRYPTO
  nfsd: fix dependency of nfsd on auth_rpcgss

diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 18b3e89..fbb2a5e 100644 (file)
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -82,6 +82,7 @@ config NFSD_V4
        select NFSD_V3
        select FS_POSIX_ACL
        select SUNRPC_GSS
+       select CRYPTO
        help
          This option enables support in your system's NFS server for
          version 4 of the NFS protocol (RFC 3530).

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 1f5eae4..2b1449d 100644 (file)
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -13,6 +13,7 @@
 #include <linux/lockd/lockd.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/gss_api.h>
+#include <linux/sunrpc/gss_krb5_enctypes.h>
 
 #include "idmap.h"
 #include "nfsd.h"
@@ -189,18 +190,10 @@ static struct file_operations export_features_operations = {
        .release        = single_release,
 };
 
-#ifdef CONFIG_SUNRPC_GSS
+#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
 static int supported_enctypes_show(struct seq_file *m, void *v)
 {
-       struct gss_api_mech *k5mech;
-
-       k5mech = gss_mech_get_by_name("krb5");
-       if (k5mech == NULL)
-               goto out;
-       if (k5mech->gm_upcall_enctypes != NULL)
-               seq_printf(m, k5mech->gm_upcall_enctypes);
-       gss_mech_put(k5mech);
-out:
+       seq_printf(m, KRB5_SUPPORTED_ENCTYPES);
        return 0;
 }
 
@@ -215,7 +208,7 @@ static struct file_operations supported_enctypes_ops = {
        .llseek         = seq_lseek,
        .release        = single_release,
 };
-#endif /* CONFIG_SUNRPC_GSS */
+#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
 
 extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
 extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
@@ -1427,9 +1420,9 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
                [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
                [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
                [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
-#ifdef CONFIG_SUNRPC_GSS
+#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
                [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
-#endif /* CONFIG_SUNRPC_GSS */
+#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
 #ifdef CONFIG_NFSD_V4
                [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
                [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d571827..fd0acca 100644 (file)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -696,7 +696,15 @@ nfsd_access(struct svc_rqst *rqstp, struct svc_fh *fhp, u32 *access, u32 *suppor
 }
 #endif /* CONFIG_NFSD_V3 */
 
+static int nfsd_open_break_lease(struct inode *inode, int access)
+{
+       unsigned int mode;
 
+       if (access & NFSD_MAY_NOT_BREAK_LEASE)
+               return 0;
+       mode = (access & NFSD_MAY_WRITE) ? O_WRONLY : O_RDONLY;
+       return break_lease(inode, mode | O_NONBLOCK);
+}
 
 /*
  * Open an existing file or directory.
@@ -744,12 +752,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
        if (!inode->i_fop)
                goto out;
 
-       /*
-        * Check to see if there are any leases on this file.
-        * This may block while leases are broken.
-        */
-       if (!(access & NFSD_MAY_NOT_BREAK_LEASE))
-               host_err = break_lease(inode, O_NONBLOCK | ((access & NFSD_MAY_WRITE) ? O_WRONLY : 0));
+       host_err = nfsd_open_break_lease(inode, access);
        if (host_err) /* NOMEM or WOULDBLOCK */
                goto out_nfserr;
 
@@ -1660,8 +1663,10 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
        if (!dold->d_inode)
                goto out_drop_write;
        host_err = nfsd_break_lease(dold->d_inode);
-       if (host_err)
+       if (host_err) {
+               err = nfserrno(host_err);
                goto out_drop_write;
+       }
        host_err = vfs_link(dold, dirp, dnew);
        if (!host_err) {
                err = nfserrno(commit_metadata(ffhp));

diff --git a/include/linux/sunrpc/gss_krb5_enctypes.h b/include/linux/sunrpc/gss_krb5_enctypes.h
new file mode 100644 (file)
index 0000000..ec6234e
--- /dev/null
+++ b/include/linux/sunrpc/gss_krb5_enctypes.h
@@ -0,0 +1,4 @@
+/*
+ * Dumb way to share this static piece of information with nfsd
+ */
+#define KRB5_SUPPORTED_ENCTYPES "18,17,16,23,3,1,2"

diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index 0a9a2ec..c3b7533 100644 (file)
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -43,6 +43,7 @@
 #include <linux/sunrpc/gss_krb5.h>
 #include <linux/sunrpc/xdr.h>
 #include <linux/crypto.h>
+#include <linux/sunrpc/gss_krb5_enctypes.h>
 
 #ifdef RPC_DEBUG
 # define RPCDBG_FACILITY       RPCDBG_AUTH
@@ -750,7 +751,7 @@ static struct gss_api_mech gss_kerberos_mech = {
        .gm_ops         = &gss_kerberos_ops,
        .gm_pf_num      = ARRAY_SIZE(gss_kerberos_pfs),
        .gm_pfs         = gss_kerberos_pfs,
-       .gm_upcall_enctypes = "18,17,16,23,3,1,2",
+       .gm_upcall_enctypes = KRB5_SUPPORTED_ENCTYPES,
 };
 
 static int __init init_kerberos_module(void)