[musl] [PATCH] add SEEK_DATA and SEEK_HOLE to <unistd.h>

["Érico Nogueira" <ericonr@disroot.org>]

these are linux specific constants. glibc exposes them behind
_GNU_SOURCE, but, since SEEK_* is reserved for the implementation, we
can simply define them. furthermore, since they can't be used with
fseek() and other functions that deal with FILE, we don't add them to
<stdio.h>.
---
 include/unistd.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/unistd.h b/include/unistd.h
index ee2dbe8a..212263a7 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -14,6 +14,8 @@ extern "C" {
 #define SEEK_SET 0
 #define SEEK_CUR 1
 #define SEEK_END 2
+#define SEEK_DATA 3
+#define SEEK_HOLE 4
 
 #if __cplusplus >= 201103L
 #define NULL nullptr
-- 
2.34.1