mount.nfs: Error handling clean-up

[nfs-utils.git] / utils / mount / nfsumount.c

diff --git a/utils/mount/nfsumount.c b/utils/mount/nfsumount.c
index 1d10cc689b5c46b0d4d55838a389cd39be5fb52b..1b3c8d105daba1e05bca2c592b4825f9930a72d1 100644 (file)
--- a/utils/mount/nfsumount.c
+++ b/utils/mount/nfsumount.c
@@ -34,6 +34,8 @@
 #include "mount_constants.h"
 #include "mount.h"
 #include "nfsumount.h"
+#include "error.h"
+#include "network.h"
 
 #if !defined(MNT_FORCE)
 /* dare not try to include <linux/mount.h> -- lots of errors */
@@ -45,17 +47,12 @@
 #endif
 
 extern char *progname;
-extern int nfs_mount_version;
 extern int nomtab;
 extern int verbose;
 int force;
 int lazy;
 int remount;
 
-extern int find_kernel_nfs_mount_version(void);
-extern int probe_mntport(clnt_addr_t *);
-extern int nfs_gethostbyname(const char *, struct sockaddr_in *);
-
 static inline enum clnt_stat
 nfs_umount(dirpath *argp, CLIENT *clnt)
 {
@@ -93,30 +90,6 @@ int nfs_call_umount(clnt_addr_t *mnt_server, dirpath *argp)
        return res;
 }
 
-/* complain about a failed umount */
-static void complain(int err, const char *dev) {
-  switch (err) {
-    case ENXIO:
-      nfs_error (_("umount: %s: invalid block device"), dev); break;
-    case EINVAL:
-      nfs_error (_("umount: %s: not mounted"), dev); break;
-    case EIO:
-      nfs_error (_("umount: %s: can't write superblock"), dev); break;
-    case EBUSY:
-     /* Let us hope fstab has a line "proc /proc ..."
-        and not "none /proc ..."*/
-      nfs_error (_("umount: %s: device is busy"), dev); break;
-    case ENOENT:
-      nfs_error (_("umount: %s: not found"), dev); break;
-    case EPERM:
-      nfs_error (_("umount: %s: must be superuser to umount"), dev); break;
-    case EACCES:
-      nfs_error (_("umount: %s: block devices not permitted on fs"), dev); break;
-    default:
-      nfs_error (_("umount: %s: %s"), dev, strerror (err)); break;
-  }
-}
-
 int del_mtab(const char *spec, const char *node)
 {
        int umnt_err, res;
@@ -183,8 +156,8 @@ int del_mtab(const char *spec, const char *node)
                 return 0;
 
         if (umnt_err)
-                complain(umnt_err, node);
-        return 1;
+                umount_error(umnt_err, node);
+        return EX_FILEIO;
 }
 
 /*
@@ -199,7 +172,6 @@ int _nfsumount(const char *spec, char *opts)
        struct pmap *pmap = &mnt_server.pmap;
        char *p;
 
-       nfs_mount_version = find_kernel_nfs_mount_version();
        if (spec == NULL || (p = strchr(spec,':')) == NULL)
                goto out_bad;
        hostname = xstrndup(spec, p-spec);
@@ -252,7 +224,7 @@ int _nfsumount(const char *spec, char *opts)
                goto out_bad;
        return nfs_call_umount(&mnt_server, &dirname);
  out_bad:
-       printf("%s: %s: not found or not mounted\n", progname, spec);
+       fprintf(stderr, "%s: %s: not found or not mounted\n", progname, spec);
        return 0;
 }
 
@@ -288,6 +260,7 @@ int nfsumount(int argc, char *argv[])
        argv += 1;
        argc -= 1;
 
+       argv[0] = argv[-1]; /* So that getopt error messages are correct */
        while ((c = getopt_long (argc, argv, "fvnrlh",
                                umount_longopts, NULL)) != -1) {
 
@@ -313,6 +286,10 @@ 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);
@@ -326,9 +303,21 @@ 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);
+               return EX_USAGE;
+       }
+
        if (getuid() != 0) {
                /* only permitted if "user=" or "users" is in mount options */
                if (!mc) {
+                       /* umount might call us twice.  The second time there will
+                        * be no entry in mtab and we should just exit quietly
+                        */
+                       return 0;
+
                only_root:
                        fprintf(stderr,"%s: You are not permitted to unmount %s\n",
                                progname, spec);
@@ -341,7 +330,7 @@ int nfsumount(int argc, char *argv[])
                        int len;
                        if (!opt)
                                goto only_root;
-                       if (opt[5] != '=')
+                       if (opt[4] != '=')
                                goto only_root;
                        comma = strchr(opt, ',');
                        if (comma)
@@ -358,15 +347,14 @@ int nfsumount(int argc, char *argv[])
        ret = 0;
        if (mc) {
                if (!lazy)
-                       ret = _nfsumount(mc->m.mnt_fsname, mc->m.mnt_opts);
-               if(ret)
-                       ret = del_mtab(mc->m.mnt_fsname, mc->m.mnt_dir);
+                       _nfsumount(mc->m.mnt_fsname, mc->m.mnt_opts);
+               ret = del_mtab(mc->m.mnt_fsname, mc->m.mnt_dir);
        } else if (*spec != '/') {
                if (!lazy)
-                       ret = _nfsumount(spec, "tcp,v3");
+                       _nfsumount(spec, "tcp,v3");
        } else
                ret = del_mtab(NULL, spec);
 
-       return(ret);
+       return ret;
 }