util: Use unsigned indices for bits in bitmaps

A negative bit index in a bitmap doesn't make sense.  Avoid this by
construction by using unsigned indices.  While we're there adjust
bitmap_isset() to return a bool instead of an int.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/util.h b/util.h
index aa6e4b4..cf9c4b6 100644
--- a/util.h
+++ b/util.h
@@ -148,9 +148,9 @@ int sock_l4(const struct ctx *c, sa_family_t af, uint8_t proto,
 	    uint32_t data);
 void sock_probe_mem(struct ctx *c);
 int timespec_diff_ms(const struct timespec *a, const struct timespec *b);
-void bitmap_set(uint8_t *map, int bit);
-void bitmap_clear(uint8_t *map, int bit);
-int bitmap_isset(const uint8_t *map, int bit);
+void bitmap_set(uint8_t *map, unsigned bit);
+void bitmap_clear(uint8_t *map, unsigned bit);
+bool bitmap_isset(const uint8_t *map, unsigned bit);
 void bitmap_or(uint8_t *dst, size_t size, const uint8_t *a, const uint8_t *b);
 char *line_read(char *buf, size_t len, int fd);
 void ns_enter(const struct ctx *c);