修改小于0时的返回值

Signed-off-by: N liutingsong <liutingsong@talkweb.com.cn>

修改小于0时的返回值
Signed-off-by: N liutingsong <liutingsong@talkweb.com.cn>
fa0a16c8 · liutingsong · a3ff0ac7 · fa0a16c8
隐藏空白更改
内联并排

Showing with 5 addition and 1 deletion

src/mman/mmap.c src/mman/mmap.c +5 -1

未找到文件。
--- a/src/mman/mmap.c
+++ b/src/mman/mmap.c
@@ -18,10 +18,14 @@ void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
 		errno = EINVAL;
 		return MAP_FAILED;
 	}
-	if ((len >= PTRDIFF_MAX) || (len == 0)) {
+	if (len >= PTRDIFF_MAX) {
 		errno = ENOMEM;
 		return MAP_FAILED;
 	}
+	if (len == 0) {
+                errno = EINVAL;
+                return MAP_FAILED;
+	}
 	if (flags & MAP_FIXED) {
 		__vm_wait();
 	}