text-based mount.nfs: prepare for more complex error exit handling

I'm about to add an object or two that needs to be freed before the main
functions exit.  Prepare the logic by adding an 'out' label and some
goto's.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Neil Brown <neilb@suse.de>

diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index b2e8d2f351cf9680574f3f24a690927e8341a217..4dbd19e0b1ff023967cdca5131200bbb9248e9e3 100644 (file)
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -307,24 +307,24 @@ int nfsmount_s(const char *spec, const char *node, int flags,
 {
        struct sockaddr_in saddr;
        char *hostname;
-       int err;
+       int err, retval = EX_FAIL;
 
        if (!parse_devname(spec, &hostname))
-               return EX_FAIL;
+               goto out;
        err = fill_ipv4_sockaddr(hostname, &saddr);
        free(hostname);
        if (!err)
-               return EX_FAIL;
+               goto out;
 
        extract_interesting_options(*extra_opts);
 
        if (!child && addr_opt) {
                nfs_error(_("%s: Illegal option: 'addr='"), progname);
-               return EX_FAIL;
+               goto out;
        }
 
        if (!append_addr_opt(&saddr, extra_opts))
-               return EX_FAIL;
+               goto out;
 
        if (verbose)
                printf(_("%s: text-based options: '%s'\n"),
@@ -334,11 +334,14 @@ int nfsmount_s(const char *spec, const char *node, int flags,
                if (mount(spec, node, "nfs",
                                flags & ~(MS_USER|MS_USERS), *extra_opts)) {
                        mount_error(spec, node, errno);
-                       return EX_FAIL;
+                       goto out;
                }
        }
 
-       return EX_SUCCESS;
+       retval = EX_SUCCESS;
+
+out:
+       return retval;
 }
 
 /*
@@ -360,27 +363,27 @@ int nfs4mount_s(const char *spec, const char *node, int flags,
 {
        struct sockaddr_in saddr;
        char *hostname;
-       int err;
+       int err, retval = EX_FAIL;
 
        if (!parse_devname(spec, &hostname))
-               return EX_FAIL;
+               goto out;
        err = fill_ipv4_sockaddr(hostname, &saddr);
        free(hostname);
        if (!err)
-               return EX_FAIL;
+               goto out;
 
        extract_interesting_options(*extra_opts);
 
        if (addr_opt) {
                nfs_error(_("%s: Illegal option: 'addr='"), progname);
-               return EX_FAIL;
+               goto out;
        }
 
        if (!append_addr_opt(&saddr, extra_opts))
-               return EX_FAIL;
+               goto out;
 
        if (!ca_opt && !append_clientaddr_opt(&saddr, extra_opts))
-               return EX_FAIL;
+               goto out;
 
        if (verbose)
                printf(_("%s: text-based options: '%s'\n"),
@@ -390,9 +393,12 @@ int nfs4mount_s(const char *spec, const char *node, int flags,
                if (mount(spec, node, "nfs4",
                                flags & ~(MS_USER|MS_USERS), *extra_opts)) {
                        mount_error(spec, node, errno);
-                       return EX_FAIL;
+                       goto out;
                }
        }
 
-       return EX_SUCCESS;
+       retval = EX_SUCCESS;
+
+out:
+       return retval;
 }