com32/chain: warning/error/help/doc tidying

Trivial change that tidies a bit warning / error reporting through
fatal()/error()/warn(). Also small doc/help updates.

Signed-off-by: Michal Soltys <soltys@ziu.info>

1 files changed, 14 insertions, 3 deletions

diff --git a/com32/chain/utility.h b/com32/chain/utility.h
index cc2c93aa..ac056dce 100644
--- a/com32/chain/utility.h
+++ b/com32/chain/utility.h
@@ -54,12 +54,23 @@ int drvoff_detect(int type);
 int bpb_detect(const uint8_t *bpb, const char *tag);
 int guid_is0(const struct guid *guid);
 
-static inline
-void error(const char *msg)
+static inline int warn(const char *x)
 {
-    fputs(msg, stderr);
+    return fprintf(stderr, "WARN: %s\n", x);
 }
 
+static inline int error(const char *x)
+{
+    return fprintf(stderr, "ERR: %s\n", x);
+}
+
+static inline int crit(const char *x)
+{
+    return fprintf(stderr, "CRIT: %s @%s:%d\n", x, __FILE__, __LINE__);
+}
+
+#define critm()  crit("Malloc failure.")
+
 #endif
 
 /* vim: set ts=8 sts=4 sw=4 noet: */