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authorJeff Layton <jlayton@kernel.org>2022-10-18 14:47:55 +0300
committerChuck Lever <chuck.lever@oracle.com>2022-11-28 20:54:44 +0300
commitcb12fae1c34b1fa7eaae92c5aadc72d86d7fae19 (patch)
treefceddd06f54d356e18816dfa5718e3939874df92 /fs/nfsd/vfs.c
parent8e823bafff2308753d430566256c83d8085952da (diff)
downloadlinux-cb12fae1c34b1fa7eaae92c5aadc72d86d7fae19.tar.xz
nfsd: move nfserrno() to vfs.c
nfserrno() is common to all nfs versions, but nfsproc.c is specifically for NFSv2. Move it to vfs.c, and the prototype to vfs.h. While we're in here, remove the #ifdef EDQUOT check in this function. It's apparently a holdover from the initial merge of the nfsd code in 1997. No other place in the kernel checks that that symbol is defined before using it, so I think we can dispense with it here. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/vfs.c')
-rw-r--r--fs/nfsd/vfs.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d6d90d63485d..278ebc677061 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.