mount.nfs command: old glibc missing some flags

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

diff --git a/utils/mount/nfsumount.c b/utils/mount/nfsumount.c
index 9e9cd16a66e8c5d959e07dc8a129716d97adbe9a..b2327e03561d9fc41bb4f69a875551b1abd3f864 100644 (file)
--- a/utils/mount/nfsumount.c
+++ b/utils/mount/nfsumount.c
@@ -34,6 +34,7 @@
 #include "mount.h"
 #include "error.h"
 #include "network.h"
+#include "parse_dev.h"
 
 #if !defined(MNT_FORCE)
 /* dare not try to include <linux/mount.h> -- lots of errors */
@@ -142,7 +143,7 @@ static int del_mtab(const char *spec, const char *node)
  * We will need this information to get through the firewall again
  * to do the umount.
  */
-static int do_nfs_umount(const char *spec, char *opts)
+static int do_nfs_umount23(const char *spec, char *opts)
 {
        char *hostname;
        char *dirname;
@@ -150,21 +151,11 @@ static int do_nfs_umount(const char *spec, char *opts)
        struct mntent mnt = { .mnt_opts = opts };
        struct pmap *pmap = &mnt_server.pmap;
        char *p;
+       int result = EX_USAGE;
+
+       if (!nfs_parse_devname(spec, &hostname, &dirname))
+               return result;
 
-       if (spec == NULL) {
-               nfs_error(_("%s: No NFS export name was provided"),
-                               progname);
-               return EX_USAGE;
-       }
-       
-       p = strchr(spec, ':');
-       if (p == NULL) {
-               nfs_error(_("%s: '%s' is not a legal NFS export name"),
-                               progname, spec);
-               return EX_USAGE;
-       }
-       hostname = xstrndup(spec, p - spec);
-       dirname = xstrdup(p + 1);
 #ifdef NFS_MOUNT_DEBUG
        printf(_("host: %s, directory: %s\n"), hostname, dirname);
 #endif
@@ -190,7 +181,7 @@ static int do_nfs_umount(const char *spec, char *opts)
        }
 
        pmap->pm_prog = MOUNTPROG;
-       pmap->pm_vers = MOUNTVERS_NFSV3;
+       pmap->pm_vers = 0; /* unknown */
        if (opts && (p = strstr(opts, "mountprog=")) && isdigit(*(p+10)))
                pmap->pm_prog = atoi(p+10);
        if (opts && (p = strstr(opts, "mountport=")) && isdigit(*(p+10)))
@@ -199,30 +190,40 @@ static int do_nfs_umount(const char *spec, char *opts)
                pmap->pm_vers = nfsvers_to_mnt(2);
        if (opts && hasmntopt(&mnt, "v3"))
                pmap->pm_vers = nfsvers_to_mnt(3);
-       if (opts && hasmntopt(&mnt, "v4"))
-               pmap->pm_vers = nfsvers_to_mnt(4);
        if (opts && (p = strstr(opts, "vers=")) && isdigit(*(p+5)))
                pmap->pm_vers = nfsvers_to_mnt(atoi(p+5));
        if (opts && (p = strstr(opts, "mountvers=")) && isdigit(*(p+10)))
                pmap->pm_vers = atoi(p+10);
-       if (opts && (hasmntopt(&mnt, "udp") || hasmntopt(&mnt, "proto=udp")))
+       if (opts && (hasmntopt(&mnt, "udp")
+                    || hasmntopt(&mnt, "proto=udp")
+                    || hasmntopt(&mnt, "mountproto=udp")
+                   ))
                pmap->pm_prot = IPPROTO_UDP;
-       if (opts && (hasmntopt(&mnt, "tcp") || hasmntopt(&mnt, "proto=tcp")))
+       if (opts && (hasmntopt(&mnt, "tcp")
+                    || hasmntopt(&mnt, "proto=tcp")
+                    || hasmntopt(&mnt, "mountproto=tcp")
+                   ))
                pmap->pm_prot = IPPROTO_TCP;
 
        if (!nfs_gethostbyname(hostname, &mnt_server.saddr)) {
-               nfs_error(_("%s: '%s' does not contain a recognized hostname"),
-                               progname, spec);
-               return EX_USAGE;
+               nfs_error(_("%s: DNS resolution of '%s' failed"),
+                               progname, hostname);
+               goto out;
        }
 
        if (!nfs_call_umount(&mnt_server, &dirname)) {
                nfs_error(_("%s: Server failed to unmount '%s'"),
                                progname, spec);
-               return EX_USAGE;
+               result = EX_FAIL;
+               goto out;
        }
 
-       return EX_SUCCESS;
+       result = EX_SUCCESS;
+
+out:
+       free(hostname);
+       free(dirname);
+       return result;
 }
 
 static struct option umount_longopts[] =
@@ -349,11 +350,16 @@ int nfsumount(int argc, char *argv[])
        ret = 0;
        if (mc) {
                if (!lazy && strcmp(mc->m.mnt_type, "nfs4") != 0)
-                       ret = do_nfs_umount(mc->m.mnt_fsname, mc->m.mnt_opts);
-               ret = del_mtab(mc->m.mnt_fsname, mc->m.mnt_dir) ?: ret;
+                       /* We ignore the error from do_nfs_umount23.
+                        * If the actual umount succeeds (in del_mtab),
+                        * we don't want to signal an error, as that
+                        * could cause /sbin/mount to retry!
+                        */
+                       do_nfs_umount23(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 = do_nfs_umount(spec, "tcp,v3");
+                       ret = do_nfs_umount23(spec, "tcp,v3");
        } else
                ret = del_mtab(NULL, spec);