Commit f0922298 authored by Chen Linxuan's avatar Chen Linxuan Committed by Miklos Szeredi
Browse files

fs: fuse: add dev id to /dev/fuse fdinfo 

This commit add fuse connection device id to
fdinfo of opened /dev/fuse files.

Related discussions can be found at links below.

Link: https://lore.kernel.org/all/CAJfpegvEYUgEbpATpQx8NqVR33Mv-VK96C+gbTag1CEUeBqvnA@mail.gmail.com/


Signed-off-by: default avatarChen Linxuan <chenlinxuan@uniontech.com>
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent 18ee43c3

fs/fuse/dev.c

+15 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/swap.h>

#include <linux/splice.h>

#include <linux/sched.h>

#include <linux/seq_file.h>



#define CREATE_TRACE_POINTS

#include "fuse_trace.h"
@@ -2618,6 +2619,17 @@ static long fuse_dev_ioctl(struct file *file, unsigned int cmd, 
	}

}



#ifdef CONFIG_PROC_FS

static void fuse_dev_show_fdinfo(struct seq_file *seq, struct file *file)

{

	struct fuse_dev *fud = fuse_get_dev(file);

	if (!fud)

		return;



	seq_printf(seq, "fuse_connection:\t%u\n", fud->fc->dev);

}

#endif



const struct file_operations fuse_dev_operations = {

	.owner		= THIS_MODULE,

	.open		= fuse_dev_open,
@@ -2633,6 +2645,9 @@ const struct file_operations fuse_dev_operations = { 
#ifdef CONFIG_FUSE_IO_URING

	.uring_cmd	= fuse_uring_cmd,

#endif

#ifdef CONFIG_PROC_FS

	.show_fdinfo	= fuse_dev_show_fdinfo,

#endif

};

EXPORT_SYMBOL_GPL(fuse_dev_operations);