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

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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: Chen Linxuan <chenlinxuan@uniontech.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Chen Linxuan 2025-05-13 12:20:49 +08:00 committed by Miklos Szeredi
parent 18ee43c398
commit f09222980d
1 changed files with 15 additions and 0 deletions
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15
fs/fuse/dev.c
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@ -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);