wireup linux/name_to_handle_at and name_to_handle_at syscalls
authorKhem Raj <raj.khem@gmail.com>
Thu, 13 Sep 2018 01:02:11 +0000 (18:02 -0700)
committerRich Felker <dalias@aerifal.cx>
Thu, 13 Sep 2018 01:28:39 +0000 (21:28 -0400)
include/fcntl.h
src/linux/name_to_handle_at.c [new file with mode: 0644]
src/linux/open_by_handle_at.c [new file with mode: 0644]

index 6d8edcd12db010ee0d8c63ef29b924bd19808b1a..99b21759889ac7c9a8da34ba50bee4fe7fd9a90b 100644 (file)
@@ -155,6 +155,11 @@ int lockf(int, int, off_t);
 #define F_OWNER_PID 1
 #define F_OWNER_PGRP 2
 #define F_OWNER_GID 2
+struct file_handle {
+       unsigned handle_bytes;
+       int handle_type;
+       unsigned char f_handle[];
+};
 struct f_owner_ex {
        int type;
        pid_t pid;
@@ -170,6 +175,8 @@ struct f_owner_ex {
 #define SPLICE_F_GIFT 8
 int fallocate(int, int, off_t, off_t);
 #define fallocate64 fallocate
+int name_to_handle_at(int, const char *, struct file_handle *, int *, int);
+int open_by_handle_at(int, struct file_handle *, int);
 ssize_t readahead(int, off_t, size_t);
 int sync_file_range(int, off_t, off_t, unsigned);
 ssize_t vmsplice(int, const struct iovec *, size_t, unsigned);
diff --git a/src/linux/name_to_handle_at.c b/src/linux/name_to_handle_at.c
new file mode 100644 (file)
index 0000000..cd4075b
--- /dev/null
@@ -0,0 +1,10 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include "syscall.h"
+
+int name_to_handle_at(int dirfd, const char *pathname,
+       struct file_handle *handle, int *mount_id, int flags)
+{
+       return syscall(SYS_name_to_handle_at, dirfd,
+               pathname, handle, mount_id, flags);
+}
diff --git a/src/linux/open_by_handle_at.c b/src/linux/open_by_handle_at.c
new file mode 100644 (file)
index 0000000..1c9b6a2
--- /dev/null
@@ -0,0 +1,8 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include "syscall.h"
+
+int open_by_handle_at(int mount_fd, struct file_handle *handle, int flags)
+{
+       return syscall(SYS_open_by_handle_at, mount_fd, handle, flags);
+}