[PATCH v3 2/4] tools/nolibc: add wrapper for memfd_create

Thomas Weißschuh
2023-04-02T18:04:49Z

This is useful for users and will also be used by a future testcase.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
tools/include/nolibc/sys.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index 5d624dc63a42..bea9760dbd16 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -1365,6 +1365,29 @@ ssize_t write(int fd, const void *buf, size_t count)
return ret;
}

+
+/*
+ * int memfd_create(const char *name, unsigned int flags);
+ */
+
+static __attribute__((unused))
+int sys_memfd_create(const char *name, unsigned int flags)
+{
+ return my_syscall2(__NR_memfd_create, name, flags);
+}
+
+static __attribute__((unused))
+int memfd_create(const char *name, unsigned int flags)
+{
+ ssize_t ret = sys_memfd_create(name, flags);
+
+ if (ret < 0) {
+ SET_ERRNO(-ret);
+ ret = -1;
+ }
+ return ret;
+}
+
/* make sure to include all global symbols */
#include "nolibc.h"

--
2.40.0