❔ Hardlink in Linux .NET 6.0

robb06 · 2023-03-10T22:00:12.839Z

Dose anyone have a solution or guide to tell me how to essentially ln from within a .NET 6.0 console program ? If I have to spawn ln I will but I'd rather achieve it without that if possible.

K

Klarth•3/10/23, 10:21 PM

You'll need to p/invoke something native. Possibly libc's

link

link

. You can run through an example like https://github.com/ProfessionalCSharp/ProfessionalCSharp2021/blob/main/5_More/PInvoke/PInvokeSampleLib/Linux/LinuxNativeMethods.cs

K

Klarth•3/10/23, 10:21 PM

Since you're on .NET 6, you won't be able to use

[LibraryImport]

[LibraryImport]

[LibraryImport]

[LibraryImport]. You'll need to use the older

[DllImport]

[DllImport]

[DllImport]

[DllImport].

K

Klarth•3/10/23, 10:21 PM

There are probably other examples on GitHub if you search

DllImport libc link

DllImport libc link

DllImport libc link

DllImport libc link and filter to C# if necessary.

K

Klarth•3/10/23, 10:22 PM

(Also verify that the docs state it creates a hard link and not a symbolic link.)

M

mtreit•3/10/23, 10:34 PM

using System.Runtime.InteropServices;

int result = link("a.txt", "link.txt");
Console.WriteLine(result);

[DllImport("libc")]
static extern int link(string oldpath, string newpath);

using System.Runtime.InteropServices;

int result = link("a.txt", "link.txt");
Console.WriteLine(result);

[DllImport("libc")]
static extern int link(string oldpath, string newpath);

using System.Runtime.InteropServices;

int result = link("a.txt", "link.txt");
Console.WriteLine(result);

[DllImport("libc")]
static extern int link(string oldpath, string newpath);

using System.Runtime.InteropServices;

int result = link("a.txt", "link.txt");
Console.WriteLine(result);

[DllImport("libc")]
static extern int link(string oldpath, string newpath);

This seems to work...

R

robb06OP•3/10/23, 10:34 PM

oh nice, thank you. I will look at that now

A

Accord•3/11/23, 11:01 PM

Was this issue resolved? If so, run

/close

/close

otherwise I will mark this as stale and this post will be archived until there is new activity.

❔ Hardlink in Linux .NET 6.0

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