df plugin: skip duplicate entries, fixes "uc_update: Value too old" error

Issue: #1402

diff --git a/src/df.c b/src/df.c
index 3b0c995b2f0fed286f47d8d80e94b10fe75dd828..3f9eabdae5cad3ef12c3bb2431d11cfc166ec381 100644 (file)
--- a/src/df.c
+++ b/src/df.c
@@ -204,6 +204,7 @@ static int df_read (void)
        {
                unsigned long long blocksize;
                char disk_name[256];
+        cu_mount_t *mnt_dup_ptr;
                uint64_t blk_free;
                uint64_t blk_reserved;
                uint64_t blk_used;
@@ -219,6 +220,20 @@ static int df_read (void)
                if (ignorelist_match (il_fstype, mnt_ptr->type))
                        continue;
 
+               /* ignore duplicates */
+               for (mnt_dup_ptr = mnt_ptr; mnt_dup_ptr != NULL; mnt_dup_ptr = mnt_dup_ptr->next)
+               {
+                       if (by_device) {
+                               if (strcmp (mnt_ptr->spec_device, mnt_dup_ptr->spec_device) == 0)
+                                       continue;
+                       }
+                       else
+                       {
+                               if (strcmp (mnt_ptr->dir, mnt_dup_ptr->dir) == 0)
+                                       continue;
+                       }
+               }
+
                if (STATANYFS (mnt_ptr->dir, &statbuf) < 0)
                {
                        char errbuf[1024];