From 16bda5364478e0b2d00ec3dc0ac534d775ab37bb Mon Sep 17 00:00:00 2001
From: Neil Brown <neilb@suse.de>
Date: Fri, 16 Mar 2007 17:02:42 +1100
Subject: [PATCH] Support -s option to ignore unknown options (sloppy)

---
 utils/mount/mount.c     |  7 ++++++-
 utils/mount/nfs4mount.c |  5 +++--
 utils/mount/nfsmount.c  | 19 ++++++++++++++++---
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/utils/mount/mount.c b/utils/mount/mount.c
index 639ff4b..7d58ef6 100644
--- a/utils/mount/mount.c
+++ b/utils/mount/mount.c
@@ -43,6 +43,7 @@ char *progname;
 int nomtab;
 int verbose;
 int mounttype;
+int sloppy;
 
 static struct option longopts[] = {
   { "fake", 0, 0, 'f' },
@@ -190,6 +191,7 @@ void mount_usage()
 	printf("\t-w\t\tMount file system read-write\n");
 	printf("\t-f\t\tFake mount, don't actually mount\n");
 	printf("\t-n\t\tDo not update /etc/mtab\n");
+	printf("\t-s\t\tTolerate sloppy mount options rather than failing.\n");
 	printf("\t-h\t\tPrint this help\n");
 	printf("\tversion\t\tnfs4 - NFS version 4, nfs - older NFS version supported\n");
 	printf("\tnfsoptions\tRefer mount.nfs(8) or nfs(5)\n\n");
@@ -311,7 +313,7 @@ int main(int argc, char *argv[])
 		return 0;
 	}
 
-	while ((c = getopt_long (argc - 2, argv + 2, "rt:vVwfno:h",
+	while ((c = getopt_long (argc - 2, argv + 2, "rt:vVwfno:hs",
 				longopts, NULL)) != -1) {
 		switch (c) {
 		case 'r':
@@ -341,6 +343,9 @@ int main(int argc, char *argv[])
 			else
 				mount_opts = xstrdup(optarg);
 			break;
+		case 's':
+			++sloppy;
+			break;
 		case 128: /* bind */
 			mounttype = MS_BIND;
 			break;
diff --git a/utils/mount/nfs4mount.c b/utils/mount/nfs4mount.c
index 717ad56..8aa13c6 100644
--- a/utils/mount/nfs4mount.c
+++ b/utils/mount/nfs4mount.c
@@ -50,6 +50,7 @@
 #endif
 
 extern int verbose;
+extern int sloppy;
 
 char *IDMAPLCK = DEFAULT_DIR "/rpcidmapd";
 #define idmapd_check() do { \
@@ -308,7 +309,7 @@ int nfs4mount(const char *spec, const char *node, int *flags,
 				num_flavour = parse_sec(opteq+1, pseudoflavour);
 				if (!num_flavour)
 					goto fail;
-			} else if (!strcmp(opt, "addr")) {
+			} else if (!strcmp(opt, "addr") || sloppy) {
 				/* ignore */;
 			} else {
 				printf(_("unknown nfs mount parameter: "
@@ -335,7 +336,7 @@ int nfs4mount(const char *spec, const char *node, int *flags,
 				nocto = !val;
 			else if (!strcmp(opt, "ac"))
 				noac = !val;
-			else {
+			else if (!sloppy) {
 				printf(_("unknown nfs mount option: "
 					 "%s%s\n"), val ? "" : "no", opt);
 				goto fail;
diff --git a/utils/mount/nfsmount.c b/utils/mount/nfsmount.c
index 0188caa..db1f544 100644
--- a/utils/mount/nfsmount.c
+++ b/utils/mount/nfsmount.c
@@ -104,6 +104,7 @@ typedef union {
 static char errbuf[BUFSIZ];
 static char *erreob = &errbuf[BUFSIZ];
 extern int verbose;
+extern int sloppy;
 
 /* Convert RPC errors into strings */
 int rpc_strerror(int);
@@ -606,13 +607,17 @@ parse_options(char *old_opts, struct nfs_mount_data *data,
 			} else if (!strcmp(opt, "namlen")) {
 				if (nfs_mount_version >= 2)
 					data->namlen = val;
+				else if (sloppy)
+					continue;
 				else
 					goto bad_parameter;
 #endif
 			} else if (!strcmp(opt, "addr")) {
 				/* ignore */;
 				continue;
- 			} else
+ 			} else if (sloppy)
+				continue;
+			else
 				goto bad_parameter;
 			sprintf(cbuf, "%s=%s,", opt, opteq+1);
 		} else if (opteq) {
@@ -629,7 +634,9 @@ parse_options(char *old_opts, struct nfs_mount_data *data,
 					mnt_pmap->pm_prot = IPPROTO_TCP;
 					data->flags |= NFS_MOUNT_TCP;
 #endif
-				} else
+				} else if (sloppy)
+					continue;
+				else
 					goto bad_parameter;
 #if NFS_MOUNT_VERSION >= 5
 			} else if (!strcmp(opt, "sec")) {
@@ -660,6 +667,8 @@ parse_options(char *old_opts, struct nfs_mount_data *data,
 					data->pseudoflavor = AUTH_GSS_SPKMI;
 				else if (!strcmp(secflavor, "spkm3p"))
 					data->pseudoflavor = AUTH_GSS_SPKMP;
+				else if (sloppy)
+					continue;
 				else {
 					printf(_("Warning: Unrecognized security flavor %s.\n"),
 						secflavor);
@@ -679,7 +688,9 @@ parse_options(char *old_opts, struct nfs_mount_data *data,
 					goto bad_parameter;
  				}
  				strncpy(data->context, context, NFS_MAX_CONTEXT_LEN);
- 			} else
+ 			} else if (sloppy)
+				continue;
+			else
 				goto bad_parameter;
 			sprintf(cbuf, "%s=%s,", opt, opteq+1);
 		} else {
@@ -766,6 +777,8 @@ parse_options(char *old_opts, struct nfs_mount_data *data,
 #endif
 			} else {
 			bad_option:
+				if (sloppy)
+					continue;
 				printf(_("Unsupported nfs mount option: "
 					 "%s%s\n"), val ? "" : "no", opt);
 				goto out_bad;
-- 
2.39.5