WARNS=2 cleanup.

PR:		bin/32567
MFC after:	2 weeks

3 files changed, 16 insertions, 3 deletions

diff --git a/usr.sbin/kldxref/Makefile b/usr.sbin/kldxref/Makefile
index 4bb374d..2afcf06 100644
--- a/usr.sbin/kldxref/Makefile
+++ b/usr.sbin/kldxref/Makefile
@@ -4,4 +4,6 @@ PROG=	kldxref
 SRCS=	kldxref.c ef.c
 MAN=	kldxref.8
 
+WARNS?=	2
+
 .include <bsd.prog.mk>
diff --git a/usr.sbin/kldxref/ef.c b/usr.sbin/kldxref/ef.c
index 9d3a478..8e8000b 100644
--- a/usr.sbin/kldxref/ef.c
+++ b/usr.sbin/kldxref/ef.c
@@ -49,6 +49,10 @@
 
 #include "ef.h"
 
+static void ef_print_phdr(Elf_Phdr *);
+static u_long ef_get_offset(elf_file_t, Elf_Off);
+static int ef_parse_dynamic(elf_file_t);
+
 void
 ef_print_phdr(Elf_Phdr *phdr)
 {
@@ -213,12 +217,18 @@ ef_parse_dynamic(elf_file_t ef)
 int
 ef_read(elf_file_t ef, Elf_Off offset, size_t len, void*dest)
 {
+	ssize_t r;
 
-	if (offset != -1) {
+	if (offset != (Elf_Off)-1) {
 		if (lseek(ef->ef_fd, offset, SEEK_SET) == -1)
 			return EIO;
 	}
-	return read(ef->ef_fd, dest, len) == len ? 0 : EIO;
+
+	r = read(ef->ef_fd, dest, len);
+	if (r != -1 && (size_t)r == len)
+		return 0;
+	else
+		return EIO;
 }
 
 int
diff --git a/usr.sbin/kldxref/kldxref.c b/usr.sbin/kldxref/kldxref.c
index 79ab350..d572d14 100644
--- a/usr.sbin/kldxref/kldxref.c
+++ b/usr.sbin/kldxref/kldxref.c
@@ -81,11 +81,12 @@ static int dflag, verbose;
 
 FILE *fxref;
 
-static char *xref_file = "linker.hints";
+static const char *xref_file = "linker.hints";
 
 static char recbuf[MAXRECSIZE];
 static int recpos, reccnt;
 
+void maketempfile(char *, const char *);
 static void usage(void);
 
 static void