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commit e6499c6f4b5f56a16f8b8ef60529c1da28b13aea
Author: Bryan Schumaker <bjschuma@netapp.com>
Date: Thu Jan 26 16:54:23 2012 -0500
NFS: Fall back on old idmapper if request_key() fails
This patch removes the CONFIG_NFS_USE_NEW_IDMAPPER compile option.
First, the idmapper will attempt to map the id using /sbin/request-key
and nfsidmap. If this fails (if /etc/request-key.conf is not configured
properly) then the idmapper will call the legacy code to perform the
mapping. I left a comment stating where the legacy code begins to make
it easier for somebody to remove in the future.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff -up linux-3.2.noarch/fs/nfs/idmap.c.orig linux-3.2.noarch/fs/nfs/idmap.c
--- linux-3.2.noarch/fs/nfs/idmap.c.orig 2012-01-27 10:07:07.209851446 -0500
+++ linux-3.2.noarch/fs/nfs/idmap.c 2012-01-27 10:15:42.914563082 -0500
@@ -142,8 +142,6 @@ static int nfs_map_numeric_to_string(__u
return snprintf(buf, buflen, "%u", id);
}
-#ifdef CONFIG_NFS_USE_NEW_IDMAPPER
-
#include <linux/cred.h>
#include <linux/sunrpc/sched.h>
#include <linux/nfs4.h>
@@ -328,43 +326,7 @@ static int nfs_idmap_lookup_id(const cha
return ret;
}
-int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid)
-{
- if (nfs_map_string_to_numeric(name, namelen, uid))
- return 0;
- return nfs_idmap_lookup_id(name, namelen, "uid", uid);
-}
-
-int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *gid)
-{
- if (nfs_map_string_to_numeric(name, namelen, gid))
- return 0;
- return nfs_idmap_lookup_id(name, namelen, "gid", gid);
-}
-
-int nfs_map_uid_to_name(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen)
-{
- int ret = -EINVAL;
-
- if (!(server->caps & NFS_CAP_UIDGID_NOMAP))
- ret = nfs_idmap_lookup_name(uid, "user", buf, buflen);
- if (ret < 0)
- ret = nfs_map_numeric_to_string(uid, buf, buflen);
- return ret;
-}
-int nfs_map_gid_to_group(const struct nfs_server *server, __u32 gid, char *buf, size_t buflen)
-{
- int ret = -EINVAL;
-
- if (!(server->caps & NFS_CAP_UIDGID_NOMAP))
- ret = nfs_idmap_lookup_name(gid, "group", buf, buflen);
- if (ret < 0)
- ret = nfs_map_numeric_to_string(gid, buf, buflen);
- return ret;
-}
-
-#else /* CONFIG_NFS_USE_NEW_IDMAPPER not defined */
-
+/* idmap classic begins here */
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/init.h>
@@ -796,19 +758,27 @@ static unsigned int fnvhash32(const void
int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
+ int ret = -EINVAL;
if (nfs_map_string_to_numeric(name, namelen, uid))
return 0;
- return nfs_idmap_id(idmap, &idmap->idmap_user_hash, name, namelen, uid);
+ ret = nfs_idmap_lookup_id(name, namelen, "uid", uid);
+ if (ret < 0)
+ ret = nfs_idmap_id(idmap, &idmap->idmap_user_hash, name, namelen, uid);
+ return ret;
}
-int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid)
+int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *gid)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
+ int ret = -EINVAL;
- if (nfs_map_string_to_numeric(name, namelen, uid))
+ if (nfs_map_string_to_numeric(name, namelen, gid))
return 0;
- return nfs_idmap_id(idmap, &idmap->idmap_group_hash, name, namelen, uid);
+ ret = nfs_idmap_lookup_id(name, namelen, "gid", gid);
+ if (ret < 0)
+ ret = nfs_idmap_id(idmap, &idmap->idmap_group_hash, name, namelen, gid);
+ return ret;
}
int nfs_map_uid_to_name(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen)
@@ -816,22 +786,26 @@ int nfs_map_uid_to_name(const struct nfs
struct idmap *idmap = server->nfs_client->cl_idmap;
int ret = -EINVAL;
- if (!(server->caps & NFS_CAP_UIDGID_NOMAP))
- ret = nfs_idmap_name(idmap, &idmap->idmap_user_hash, uid, buf);
+ if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) {
+ ret = nfs_idmap_lookup_name(uid, "user", buf, buflen);
+ if (ret < 0)
+ ret = nfs_idmap_name(idmap, &idmap->idmap_user_hash, uid, buf);
+ }
if (ret < 0)
ret = nfs_map_numeric_to_string(uid, buf, buflen);
return ret;
}
-int nfs_map_gid_to_group(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen)
+int nfs_map_gid_to_group(const struct nfs_server *server, __u32 gid, char *buf, size_t buflen)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
int ret = -EINVAL;
- if (!(server->caps & NFS_CAP_UIDGID_NOMAP))
- ret = nfs_idmap_name(idmap, &idmap->idmap_group_hash, uid, buf);
+ if (!(server->caps & NFS_CAP_UIDGID_NOMAP)) {
+ ret = nfs_idmap_lookup_name(gid, "group", buf, buflen);
+ if (ret < 0)
+ ret = nfs_idmap_name(idmap, &idmap->idmap_group_hash, gid, buf);
+ }
if (ret < 0)
- ret = nfs_map_numeric_to_string(uid, buf, buflen);
+ ret = nfs_map_numeric_to_string(gid, buf, buflen);
return ret;
}
-
-#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
diff -up linux-3.2.noarch/fs/nfs/Kconfig.orig linux-3.2.noarch/fs/nfs/Kconfig
--- linux-3.2.noarch/fs/nfs/Kconfig.orig 2012-01-04 18:55:44.000000000 -0500
+++ linux-3.2.noarch/fs/nfs/Kconfig 2012-01-27 10:15:42.913562572 -0500
@@ -132,14 +132,3 @@ config NFS_USE_KERNEL_DNS
select DNS_RESOLVER
select KEYS
default y
-
-config NFS_USE_NEW_IDMAPPER
- bool "Use the new idmapper upcall routine"
- depends on NFS_V4 && KEYS
- help
- Say Y here if you want NFS to use the new idmapper upcall functions.
- You will need /sbin/request-key (usually provided by the keyutils
- package). For details, read
- <file:Documentation/filesystems/nfs/idmapper.txt>.
-
- If you are unsure, say N.
diff -up linux-3.2.noarch/fs/nfs/sysctl.c.orig linux-3.2.noarch/fs/nfs/sysctl.c
--- linux-3.2.noarch/fs/nfs/sysctl.c.orig 2012-01-04 18:55:44.000000000 -0500
+++ linux-3.2.noarch/fs/nfs/sysctl.c 2012-01-27 10:15:42.914563082 -0500
@@ -32,7 +32,6 @@ static ctl_table nfs_cb_sysctls[] = {
.extra1 = (int *)&nfs_set_port_min,
.extra2 = (int *)&nfs_set_port_max,
},
-#ifndef CONFIG_NFS_USE_NEW_IDMAPPER
{
.procname = "idmap_cache_timeout",
.data = &nfs_idmap_cache_timeout,
@@ -40,7 +39,6 @@ static ctl_table nfs_cb_sysctls[] = {
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
-#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
#endif
{
.procname = "nfs_mountpoint_timeout",
diff -up linux-3.2.noarch/include/linux/nfs_idmap.h.orig linux-3.2.noarch/include/linux/nfs_idmap.h
--- linux-3.2.noarch/include/linux/nfs_idmap.h.orig 2012-01-27 10:06:46.783643915 -0500
+++ linux-3.2.noarch/include/linux/nfs_idmap.h 2012-01-27 10:15:42.915563594 -0500
@@ -69,36 +69,11 @@ struct nfs_server;
struct nfs_fattr;
struct nfs4_string;
-#ifdef CONFIG_NFS_USE_NEW_IDMAPPER
-
int nfs_idmap_init(void);
void nfs_idmap_quit(void);
-
-static inline int nfs_idmap_new(struct nfs_client *clp)
-{
- return 0;
-}
-
-static inline void nfs_idmap_delete(struct nfs_client *clp)
-{
-}
-
-#else /* CONFIG_NFS_USE_NEW_IDMAPPER not set */
-
-static inline int nfs_idmap_init(void)
-{
- return 0;
-}
-
-static inline void nfs_idmap_quit(void)
-{
-}
-
int nfs_idmap_new(struct nfs_client *);
void nfs_idmap_delete(struct nfs_client *);
-#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
-
void nfs_fattr_init_names(struct nfs_fattr *fattr,
struct nfs4_string *owner_name,
struct nfs4_string *group_name);
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