[Libguestfs] [PATCH v6 4/7] New API: yara_destroy

Matteo Cafasso noxdafox at gmail.com
Thu Apr 6 20:41:04 UTC 2017


The yara_destroy API allows to claim resources back via the removal of
the previously loaded Yara rules.

Signed-off-by: Matteo Cafasso <noxdafox at gmail.com>
---
 daemon/yara.c             | 14 ++++++++++++++
 generator/actions_yara.ml |  8 ++++++++
 generator/proc_nr.ml      |  1 +
 lib/MAX_PROC_NR           |  2 +-
 4 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/daemon/yara.c b/daemon/yara.c
index 0d33d83cd..186a330c1 100644
--- a/daemon/yara.c
+++ b/daemon/yara.c
@@ -107,6 +107,20 @@ do_yara_load (void)
   return (ret == ERROR_SUCCESS) ? 0 : -1;
 }

+int
+do_yara_destroy (void)
+{
+  if (rules == NULL) {
+    reply_with_error ("no yara rules loaded");
+    return -1;
+  }
+
+  yr_rules_destroy (rules);
+  rules = NULL;
+
+  return 0;
+}
+
 /* Compile source code rules and load them.
  * Return ERROR_SUCCESS on success, Yara error code type on error.
  */
diff --git a/generator/actions_yara.ml b/generator/actions_yara.ml
index 3e55206ec..9d93d9f11 100644
--- a/generator/actions_yara.ml
+++ b/generator/actions_yara.ml
@@ -45,4 +45,12 @@ it is recommended to compile them first.

 Previously loaded rules will be destroyed." };

+  { defaults with
+    name = "yara_destroy"; added = (1, 37, 9);
+    style = RErr, [], [];
+    optional = Some "libyara";
+    shortdesc = "destroy previously loaded yara rules";
+    longdesc = "\
+Destroy previously loaded Yara rules in order to free libguestfs resources." };
+
 ]
diff --git a/generator/proc_nr.ml b/generator/proc_nr.ml
index d50cc9efa..d471b1a83 100644
--- a/generator/proc_nr.ml
+++ b/generator/proc_nr.ml
@@ -480,6 +480,7 @@ let proc_nr = [
 470, "internal_find_inode";
 471, "mksquashfs";
 472, "yara_load";
+473, "yara_destroy";
 ]

 (* End of list.  If adding a new entry, add it at the end of the list
diff --git a/lib/MAX_PROC_NR b/lib/MAX_PROC_NR
index 68cfb10d1..8410b8b89 100644
--- a/lib/MAX_PROC_NR
+++ b/lib/MAX_PROC_NR
@@ -1 +1 @@
-472
+473
--
2.11.0




More information about the Libguestfs mailing list