From: Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>
Date: Thu, 9 Apr 2026 15:08:41 +0000 (-0400)
Subject: include: (fileutils.h) add fallback for the copy_file_range syscall
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d6986d4d0c5e6064644cd87c09ee668c9393e8a5;p=thirdparty%2Futil-linux.git

include: (fileutils.h) add fallback for the copy_file_range syscall

Closes: #4212
Signed-off-by: Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>
---

diff --git a/include/fileutils.h b/include/fileutils.h
index d6a15fd0b..d1b2ddf08 100644
--- a/include/fileutils.h
+++ b/include/fileutils.h
@@ -103,6 +103,16 @@ static inline int statx(int fd, const char *restrict path, int flags,
 #  define HAVE_STATX 1
 # endif /* SYS_statx */
 
+# if !defined(HAVE_COPY_FILE_RANGE) && defined(SYS_copy_file_range)
+static inline ssize_t copy_file_range(int fd_in, off_t *off_in,
+			int fd_out, off_t *off_out, size_t size, unsigned int flags)
+{
+	return syscall(SYS_copy_file_range, fd_in, off_in, fd_out,
+		off_out, size, flags);
+}
+# define HAVE_COPY_FILE_RANGE 1
+# endif /* SYS_copy_file_range */
+
 #endif	/* HAVE_SYS_SYSCALL_H */
 
 
diff --git a/misc-utils/copyfilerange.c b/misc-utils/copyfilerange.c
index 41bf93e2e..00c508fb5 100644
--- a/misc-utils/copyfilerange.c
+++ b/misc-utils/copyfilerange.c
@@ -32,6 +32,7 @@
 #include "nls.h"
 #include "closestream.h"
 #include "xalloc.h"
+#include "fileutils.h" /* fallback for copy_file_range() */
 
 static int verbose;