findlib: Setting DriveType causes empty backups on Linux

Implement what is documented e.g. fstype only works on non Windows and
drivetype only works on Windows. Unknown fstypes or drivetypes are now
logged at loglevel M_WARNING instead of M_INFO.

Fixes #644: Setting DriveType causes empty backups on Linux

src/findlib/find_one.c

@@ -3,7 +3,7 @@
 
    Copyright (C) 2000-2010 Free Software Foundation Europe e.V.
    Copyright (C) 2011-2012 Planets Communications B.V.
-   Copyright (C) 2013-2013 Bareos GmbH & Co. KG
+   Copyright (C) 2013-2016 Bareos GmbH & Co. KG
 
    This program is Free Software; you can redistribute it and/or
    modify it under the terms of version three of the GNU Affero General Public
@@ -91,7 +91,14 @@ static void free_dir_ff_pkt(FF_PKT *dir_ff_pkt)
  * Check to see if we allow the file system type of a file or directory.
  * If we do not have a list of file system types, we accept anything.
  */
-static int accept_fstype(FF_PKT *ff, void *dummy) {
+#if defined(HAVE_WIN32)
+static bool accept_fstype(FF_PKT *ff, void *dummy)
+{
+   return true;
+}
+#else
+static bool accept_fstype(FF_PKT *ff, void *dummy)
+{
    int i;
    char fs[1000];
    bool accept = true;
@@ -112,14 +119,18 @@ static int accept_fstype(FF_PKT *ff, void *dummy) {
          }
       }
    }
+
    return accept;
 }
+#endif
 
 /*
  * Check to see if we allow the drive type of a file or directory.
  * If we do not have a list of drive types, we accept anything.
  */
-static inline int accept_drivetype(FF_PKT *ff, void *dummy) {
+#if defined(HAVE_WIN32)
+static inline bool accept_drivetype(FF_PKT *ff, void *dummy)
+{
    int i;
    char dt[100];
    bool accept = true;
@@ -140,8 +151,15 @@ static inline int accept_drivetype(FF_PKT *ff, void *dummy) {
          }
       }
    }
+
    return accept;
 }
+#else
+static inline bool accept_drivetype(FF_PKT *ff, void *dummy)
+{
+   return true;
+}
+#endif
 
 /*
  * This function determines whether we can use getattrlist()
@@ -834,43 +852,47 @@ static inline int process_special_file(JCR *jcr, FF_PKT *ff_pkt,
 /*
  * See if we need to perform any processing for a given file.
  */
-static inline int needs_processing(JCR *jcr, FF_PKT *ff_pkt, char *fname)
+static inline bool needs_processing(JCR *jcr, FF_PKT *ff_pkt, char *fname)
 {
+   int loglevel = M_INFO;
+
    if (!accept_fstype(ff_pkt, NULL)) {
+      char fs[100];
+
       ff_pkt->type = FT_INVALIDFS;
       if (bit_is_set(FO_KEEPATIME, ff_pkt->flags)) {
          restore_file_times(ff_pkt, fname);
       }
 
-      char fs[100];
-
       if (!fstype(ff_pkt->fname, fs, sizeof(fs))) {
-          bstrncpy(fs, "unknown", sizeof(fs));
+         bstrncpy(fs, "unknown", sizeof(fs));
+         loglevel = M_WARNING;
       }
 
-      Jmsg(jcr, M_INFO, 0, _("Top level directory \"%s\" has unlisted fstype \"%s\"\n"), fname, fs);
-      return 1;      /* Just ignore this error - or the whole backup is cancelled */
+      Jmsg(jcr, loglevel, 0, _("Top level directory \"%s\" has unlisted fstype \"%s\"\n"), fname, fs);
+      return false;  /* Just ignore this error - or the whole backup is cancelled */
    }
 
    if (!accept_drivetype(ff_pkt, NULL)) {
+      char dt[100];
+
       ff_pkt->type = FT_INVALIDDT;
       if (bit_is_set(FO_KEEPATIME, ff_pkt->flags)) {
          restore_file_times(ff_pkt, fname);
       }
 
-      char dt[100];
-
       if (!drivetype(ff_pkt->fname, dt, sizeof(dt))) {
-          bstrncpy(dt, "unknown", sizeof(dt));
+         bstrncpy(dt, "unknown", sizeof(dt));
+         loglevel = M_WARNING;
       }
 
-      Jmsg(jcr, M_INFO, 0, _("Top level directory \"%s\" has an unlisted drive type \"%s\"\n"), fname, dt);
-      return 1;      /* Just ignore this error - or the whole backup is cancelled */
+      Jmsg(jcr, loglevel, 0, _("Top level directory \"%s\" has an unlisted drive type \"%s\"\n"), fname, dt);
+      return false;  /* Just ignore this error - or the whole backup is cancelled */
    }
 
    ff_pkt->volhas_attrlist = volume_has_attrlist(fname);
 
-   return 0;
+   return true;
 }
 
 /*
@@ -905,8 +927,9 @@ int find_one_file(JCR *jcr, FF_PKT *ff_pkt,
     * We check for allowed fstypes and drivetypes at top_level and fstype change (below).
     */
    if (top_level) {
-      if (needs_processing(jcr, ff_pkt, fname) == 1)
+      if (!needs_processing(jcr, ff_pkt, fname)) {
          return 1;
+      }
    }
 
    /*