Imported Upstream version 2.03.22upstream/libdevmapper-1.02.196upstream/2.03.22upstreamsandbox/klewandowski/upstream_2.03.22

1 files changed, 148 insertions, 0 deletions

diff --git a/coverity/coverity_model.c b/coverity/coverity_model.c
new file mode 100644
index 0000000..a6840a6
--- /dev/null
+++ b/coverity/coverity_model.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * Coverity usage:
+ *
+ * translate model into xml
+ * cov-make-library -of coverity_model.xml coverity_model.c
+ *
+ * compile (using outdir 'cov'):
+ * cov-build --dir=cov make CC=gcc
+ *
+ * analyze (agressively, using 'cov')
+ * cov-analyze --dir cov --wait-for-license --hfa --concurrency --enable-fnptr --enable-constraint-fpp --security --all --aggressiveness-level=high --field-offset-escape --user-model-file=coverity/coverity_model.xml
+ *
+ * generate html output (to 'html' from 'cov'):
+ * cov-format-errors --dir cov  --html-output html
+ */
+
+struct lv_segment;
+struct logical_volume;
+
+struct lv_segment *first_seg(const struct logical_volume *lv)
+{
+	return ((struct lv_segment **)lv)[0];
+}
+
+struct lv_segment *last_seg(const struct logical_volume *lv)
+{
+	return ((struct lv_segment **)lv)[0];
+}
+
+const char *find_config_tree_str(struct cmd_context *cmd, int id, struct profile *profile)
+{
+	return "STRING";
+}
+
+/*
+struct logical_volume *origin_from_cow(const struct logical_volume *lv)
+{
+	if (lv)
+		return lv;
+
+	__coverity_panic__();
+}
+*/
+
+/* simple_memccpy() from glibc */
+void *memccpy(void *dest, const void *src, int c, size_t n)
+{
+	const char *s = src;
+	char *d = dest;
+
+	while (n-- > 0)
+		if ((*d++ = *s++) == (char) c)
+			return d;
+
+	return 0;
+}
+
+/*
+ * 2 lines bellow needs to be placed in coverity/config/user_nodefs.h
+ * Not sure about any other way.
+ * Without them, coverity shows warning since x86 system header files
+ * are using inline assembly to reset fdset
+ */
+//#nodef FD_ZERO model_FD_ZERO
+//void model_FD_ZERO(void *fdset);
+
+void model_FD_ZERO(void *fdset)
+{
+	unsigned i;
+
+	for (i = 0; i < 1024 / 8 / sizeof(long); ++i)
+		((long*)fdset)[i] = 0;
+}
+
+
+/* Resent Coverity reports quite weird errors... */
+int *__errno_location(void)
+{
+}
+const unsigned short **__ctype_b_loc (void)
+{
+}
+
+
+
+/*
+ * Added extra pointer check to not need these models,
+ * for now just keep then in file
+ */
+
+/*
+struct cmd_context;
+struct profile;
+
+const char *find_config_tree_str(struct cmd_context *cmd, int id, struct profile *profile)
+{
+        return "text";
+}
+
+const char *find_config_tree_str_allow_empty(struct cmd_context *cmd, int id, struct profile *profile)
+{
+        return "text";
+}
+*/
+
+/*
+ * Until fixed coverity case# 00531860:
+ *   A FORWARD_NULL false positive on a recursive function call
+ *
+ * model also these functions:
+ */
+/*
+const struct dm_config_node;
+const struct dm_config_node *find_config_tree_array(struct cmd_context *cmd, int id, struct profile *profile)
+{
+	const struct dm_config_node *cn;
+
+	return cn;
+}
+
+const struct dm_config_node *find_config_tree_node(struct cmd_context *cmd, int id, struct profile *profile)
+{
+	const struct dm_config_node *cn;
+
+	return cn;
+}
+
+int find_config_tree_bool(struct cmd_context *cmd, int id, struct profile *profile)
+{
+	int b;
+
+	return b;
+}
+*/