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-rw-r--r--fs/nfsd/vfs.c64
1 files changed, 63 insertions, 1 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index eccc6ce55..5d6a61d47 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -49,6 +49,69 @@
#define NFSDDBG_FACILITY NFSDDBG_FILEOP
+/**
+ * nfserrno - Map Linux errnos to NFS errnos
+ * @errno: POSIX(-ish) error code to be mapped
+ *
+ * Returns the appropriate (net-endian) nfserr_* (or nfs_ok if errno is 0). If
+ * it's an error we don't expect, log it once and return nfserr_io.
+ */
+__be32
+nfserrno (int errno)
+{
+ static struct {
+ __be32 nfserr;
+ int syserr;
+ } nfs_errtbl[] = {
+ { nfs_ok, 0 },
+ { nfserr_perm, -EPERM },
+ { nfserr_noent, -ENOENT },
+ { nfserr_io, -EIO },
+ { nfserr_nxio, -ENXIO },
+ { nfserr_fbig, -E2BIG },
+ { nfserr_stale, -EBADF },
+ { nfserr_acces, -EACCES },
+ { nfserr_exist, -EEXIST },
+ { nfserr_xdev, -EXDEV },
+ { nfserr_mlink, -EMLINK },
+ { 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_jukebox, -ETIMEDOUT },
+ { nfserr_jukebox, -ERESTARTSYS },
+ { nfserr_jukebox, -EAGAIN },
+ { nfserr_jukebox, -EWOULDBLOCK },
+ { nfserr_jukebox, -ENOMEM },
+ { nfserr_io, -ETXTBSY },
+ { nfserr_notsupp, -EOPNOTSUPP },
+ { nfserr_toosmall, -ETOOSMALL },
+ { nfserr_serverfault, -ESERVERFAULT },
+ { nfserr_serverfault, -ENFILE },
+ { nfserr_io, -EREMOTEIO },
+ { nfserr_stale, -EOPENSTALE },
+ { nfserr_io, -EUCLEAN },
+ { nfserr_perm, -ENOKEY },
+ { nfserr_no_grace, -ENOGRACE},
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) {
+ if (nfs_errtbl[i].syserr == errno)
+ return nfs_errtbl[i].nfserr;
+ }
+ WARN_ONCE(1, "nfsd: non-standard errno: %d\n", errno);
+ return nfserr_io;
+}
+
/*
* Called from nfsd_lookup and encode_dirent. Check if we have crossed
* a mount point.
@@ -1317,7 +1380,6 @@ nfsd_create_locked(struct svc_rqst *rqstp, struct svc_fh *fhp,
iap->ia_mode &= ~current_umask();
err = 0;
- host_err = 0;
switch (type) {
case S_IFREG:
host_err = vfs_create(&init_user_ns, dirp, dchild, iap->ia_mode, true);