From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/net/unix/scm.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/kernel/net/unix/scm.c b/kernel/net/unix/scm.c
index a07b2ef..e8e2a00 100644
--- a/kernel/net/unix/scm.c
+++ b/kernel/net/unix/scm.c
@@ -8,6 +8,7 @@
#include <net/af_unix.h>
#include <net/scm.h>
#include <linux/init.h>
+#include <linux/io_uring.h>
#include "scm.h"
@@ -33,6 +34,9 @@
/* PF_UNIX ? */
if (s && sock->ops && sock->ops->family == PF_UNIX)
u_sock = s;
+ } else {
+ /* Could be an io_uring instance */
+ u_sock = io_uring_get_socket(filp);
}
return u_sock;
}
@@ -59,7 +63,7 @@
/* Paired with READ_ONCE() in wait_for_unix_gc() */
WRITE_ONCE(unix_tot_inflight, unix_tot_inflight + 1);
}
- user->unix_inflight++;
+ WRITE_ONCE(user->unix_inflight, user->unix_inflight + 1);
spin_unlock(&unix_gc_lock);
}
@@ -80,7 +84,7 @@
/* Paired with READ_ONCE() in wait_for_unix_gc() */
WRITE_ONCE(unix_tot_inflight, unix_tot_inflight - 1);
}
- user->unix_inflight--;
+ WRITE_ONCE(user->unix_inflight, user->unix_inflight - 1);
spin_unlock(&unix_gc_lock);
}
@@ -94,7 +98,7 @@
{
struct user_struct *user = current_user();
- if (unlikely(user->unix_inflight > task_rlimit(p, RLIMIT_NOFILE)))
+ if (unlikely(READ_ONCE(user->unix_inflight) > task_rlimit(p, RLIMIT_NOFILE)))
return !capable(CAP_SYS_RESOURCE) && !capable(CAP_SYS_ADMIN);
return false;
}
--
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