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NFSv4: Send unmapped uid/gids to the server if the idmapper fails

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2011-02-22 15:44:31 -08:00
parent 5cf36cfdc8
commit f0b851689a
1 changed files with 26 additions and 4 deletions
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30
fs/nfs/idmap.c
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@ -52,6 +52,11 @@ static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *re
return 1;
}
static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen)
{
return snprintf(buf, buflen, "%u", id);
}
#ifdef CONFIG_NFS_USE_NEW_IDMAPPER
#include <linux/slab.h>
@ -252,11 +257,20 @@ int nfs_map_group_to_gid(struct nfs_client *clp, const char *name, size_t namele
int nfs_map_uid_to_name(struct nfs_client *clp, __u32 uid, char *buf, size_t buflen)
{
return nfs_idmap_lookup_name(uid, "user", buf, buflen);
int ret;
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(struct nfs_client *clp, __u32 gid, char *buf, size_t buflen)
{
return nfs_idmap_lookup_name(gid, "group", buf, buflen);
int ret;
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 */
@ -736,14 +750,22 @@ int nfs_map_group_to_gid(struct nfs_client *clp, const char *name, size_t namele
int nfs_map_uid_to_name(struct nfs_client *clp, __u32 uid, char *buf, size_t buflen)
{
struct idmap *idmap = clp->cl_idmap;
int ret;
return nfs_idmap_name(idmap, &idmap->idmap_user_hash, uid, buf);
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(struct nfs_client *clp, __u32 uid, char *buf, size_t buflen)
{
struct idmap *idmap = clp->cl_idmap;
int ret;
return nfs_idmap_name(idmap, &idmap->idmap_group_hash, uid, buf);
ret = nfs_idmap_name(idmap, &idmap->idmap_group_hash, uid, buf);
if (ret < 0)
ret = nfs_map_numeric_to_string(uid, buf, buflen);
return ret;
}
#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */