1 files changed, 1 insertions, 0 deletions
diff --git a/src/posix.h b/src/posix.h
index f85b1aebd..745e4af75 100644
--- a/src/posix.h
+++ b/src/posix.h
@@ -60,6 +60,7 @@ extern int p_write(git_file fd, const void *buf, size_t cnt);
 #define p_lseek(f,n,w) lseek(f, n, w)
 #define p_close(fd) close(fd)
 #define p_umask(m) umask(m)
+#define p_ftruncate(fd, sz) ftruncate(fd, sz)
 
 extern int p_open(const char *path, int flags, ...);
 extern int p_creat(const char *path, mode_t mode);