From 4bc447f758ee4d64706b990ac68cb766dbff113c Mon Sep 17 00:00:00 2001 From: Neil Brown Date: Tue, 20 Mar 2007 12:50:04 +1100 Subject: [PATCH] umount.nfs - more strict checks on command line args. Reject if there are non-flag args, Reject if the filesystem is not an NFS filesystem. --- utils/mount/nfsumount.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/utils/mount/nfsumount.c b/utils/mount/nfsumount.c index 1decf07..e101105 100644 --- a/utils/mount/nfsumount.c +++ b/utils/mount/nfsumount.c @@ -313,6 +313,10 @@ int nfsumount(int argc, char *argv[]) return 0; } } + if (optind != argc) { + umount_usage(); + return 0; + } if (spec == NULL || (*spec != '/' && strchr(spec,':') == NULL)) { printf(_("umount: %s: not found\n"), spec); @@ -326,6 +330,13 @@ int nfsumount(int argc, char *argv[]) if (!mc && verbose) printf(_("Could not find %s in mtab\n"), spec); + if (mc && strcmp(mc->m.mnt_type, "nfs") != 0 && + strcmp(mc->m.mnt_type, "nfs4") != 0) { + fprintf(stderr, "umount.nfs: %s on %s it not an nfs filesystem\n", + mc->m.mnt_fsname, mc->m.mnt_dir); + exit(1); + } + if (getuid() != 0) { /* only permitted if "user=" or "users" is in mount options */ if (!mc) { -- 2.39.5