NFS: Create an NFS v3 stat_to_errno()
In theory, NFS v3 can have different error versions than NFS v2. v4 is
already using its own nfs4_stat_to_errno() to map error codes, so
rather than create something in the generic client for v2 and v3 to
share I instead give v3 its own function.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index ee284c2..902de48 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -86,6 +86,8 @@
XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE))
#define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz)
+static int nfs3_stat_to_errno(enum nfs_stat);
+
/*
* Map file type to S_IFMT bits
*/
@@ -1388,7 +1390,7 @@
out:
return error;
out_default:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1427,7 +1429,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1475,7 +1477,7 @@
error = decode_post_op_attr(xdr, result->dir_attr);
if (unlikely(error))
goto out;
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1516,7 +1518,7 @@
out:
return error;
out_default:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1557,7 +1559,7 @@
out:
return error;
out_default:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1639,7 +1641,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1709,7 +1711,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1773,7 +1775,7 @@
error = decode_wcc_data(xdr, result->dir_attr);
if (unlikely(error))
goto out;
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1812,7 +1814,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1856,7 +1858,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -1899,7 +1901,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/**
@@ -2091,7 +2093,7 @@
error = decode_post_op_attr(xdr, result->dir_attr);
if (unlikely(error))
goto out;
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -2159,7 +2161,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -2235,7 +2237,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -2298,7 +2300,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
/*
@@ -2339,7 +2341,7 @@
out:
return error;
out_status:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
#ifdef CONFIG_NFS_V3_ACL
@@ -2404,7 +2406,7 @@
out:
return error;
out_default:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
@@ -2423,11 +2425,76 @@
out:
return error;
out_default:
- return nfs_stat_to_errno(status);
+ return nfs3_stat_to_errno(status);
}
#endif /* CONFIG_NFS_V3_ACL */
+
+/*
+ * We need to translate between nfs status return values and
+ * the local errno values which may not be the same.
+ */
+static const struct {
+ int stat;
+ int errno;
+} nfs_errtbl[] = {
+ { NFS_OK, 0 },
+ { NFSERR_PERM, -EPERM },
+ { NFSERR_NOENT, -ENOENT },
+ { NFSERR_IO, -errno_NFSERR_IO},
+ { NFSERR_NXIO, -ENXIO },
+/* { NFSERR_EAGAIN, -EAGAIN }, */
+ { NFSERR_ACCES, -EACCES },
+ { NFSERR_EXIST, -EEXIST },
+ { NFSERR_XDEV, -EXDEV },
+ { NFSERR_NODEV, -ENODEV },
+ { NFSERR_NOTDIR, -ENOTDIR },
+ { NFSERR_ISDIR, -EISDIR },
+ { NFSERR_INVAL, -EINVAL },
+ { NFSERR_FBIG, -EFBIG },
+ { NFSERR_NOSPC, -ENOSPC },
+ { NFSERR_ROFS, -EROFS },
+ { NFSERR_MLINK, -EMLINK },
+ { NFSERR_NAMETOOLONG, -ENAMETOOLONG },
+ { NFSERR_NOTEMPTY, -ENOTEMPTY },
+ { NFSERR_DQUOT, -EDQUOT },
+ { NFSERR_STALE, -ESTALE },
+ { NFSERR_REMOTE, -EREMOTE },
+#ifdef EWFLUSH
+ { NFSERR_WFLUSH, -EWFLUSH },
+#endif
+ { NFSERR_BADHANDLE, -EBADHANDLE },
+ { NFSERR_NOT_SYNC, -ENOTSYNC },
+ { NFSERR_BAD_COOKIE, -EBADCOOKIE },
+ { NFSERR_NOTSUPP, -ENOTSUPP },
+ { NFSERR_TOOSMALL, -ETOOSMALL },
+ { NFSERR_SERVERFAULT, -EREMOTEIO },
+ { NFSERR_BADTYPE, -EBADTYPE },
+ { NFSERR_JUKEBOX, -EJUKEBOX },
+ { -1, -EIO }
+};
+
+/**
+ * nfs3_stat_to_errno - convert an NFS status code to a local errno
+ * @status: NFS status code to convert
+ *
+ * Returns a local errno value, or -EIO if the NFS status code is
+ * not recognized. This function is used jointly by NFSv2 and NFSv3.
+ */
+static int nfs3_stat_to_errno(enum nfs_stat status)
+{
+ int i;
+
+ for (i = 0; nfs_errtbl[i].stat != -1; i++) {
+ if (nfs_errtbl[i].stat == (int)status)
+ return nfs_errtbl[i].errno;
+ }
+ dprintk("NFS: Unrecognized nfs status value: %u\n", status);
+ return nfs_errtbl[i].errno;
+}
+
+
#define PROC(proc, argtype, restype, timer) \
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \