1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
const std = @import("../std.zig");
const fd_t = std.c.fd_t;
const off_t = std.c.off_t;
const unexpectedErrno = std.posix.unexpectedErrno;
const errno = std.posix.errno;
const builtin = @import("builtin");
pub const CopyFileRangeError = std.posix.UnexpectedError || error{
/// If infd is not open for reading or outfd is not open for writing, or
/// opened for writing with O_APPEND, or if infd and outfd refer to the
/// same file.
BadFileFlags,
/// If the copy exceeds the process's file size limit or the maximum
/// file size for the file system outfd re- sides on.
FileTooBig,
/// A signal interrupted the system call before it could be completed.
/// This may happen for files on some NFS mounts. When this happens,
/// the values pointed to by inoffp and outoffp are reset to the
/// initial values for the system call.
Interrupted,
/// One of:
/// * infd and outfd refer to the same file and the byte ranges overlap.
/// * The flags argument is not zero.
/// * Either infd or outfd refers to a file object that is not a regular file.
InvalidArguments,
/// An I/O error occurred while reading/writing the files.
InputOutput,
/// Corrupted data was detected while reading from a file system.
CorruptedData,
/// Either infd or outfd refers to a directory.
IsDir,
/// File system that stores outfd is full.
NoSpaceLeft,
};
pub fn copy_file_range(fd_in: fd_t, off_in: ?*i64, fd_out: fd_t, off_out: ?*i64, len: usize, flags: u32) CopyFileRangeError!usize {
const rc = std.c.copy_file_range(fd_in, off_in, fd_out, off_out, len, flags);
switch (errno(rc)) {
.SUCCESS => return @intCast(rc),
.BADF => return error.BadFileFlags,
.FBIG => return error.FileTooBig,
.INTR => return error.Interrupted,
.INVAL => return error.InvalidArguments,
.IO => return error.InputOutput,
.INTEGRITY => return error.CorruptedData,
.ISDIR => return error.IsDir,
.NOSPC => return error.NoSpaceLeft,
else => |err| return unexpectedErrno(err),
}
}
|
