From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/net/sunrpc/sysctl.c | 47 +++++++++++++++++++++++++++--------------------
1 files changed, 27 insertions(+), 20 deletions(-)
diff --git a/kernel/net/sunrpc/sysctl.c b/kernel/net/sunrpc/sysctl.c
index 8c39364..3aad6ef 100644
--- a/kernel/net/sunrpc/sysctl.c
+++ b/kernel/net/sunrpc/sysctl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/net/sunrpc/sysctl.c
*
@@ -59,25 +60,32 @@
}
static int proc_do_xprt(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+ void *buffer, size_t *lenp, loff_t *ppos)
{
char tmpbuf[256];
- size_t len;
+ ssize_t len;
- if ((*ppos && !write) || !*lenp) {
+ if (write || *ppos) {
*lenp = 0;
return 0;
}
len = svc_print_xprts(tmpbuf, sizeof(tmpbuf));
- return simple_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
+ len = memory_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
+
+ if (len < 0) {
+ *lenp = 0;
+ return -EINVAL;
+ }
+ *lenp = len;
+ return 0;
}
static int
-proc_dodebug(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+proc_dodebug(struct ctl_table *table, int write, void *buffer, size_t *lenp,
+ loff_t *ppos)
{
- char tmpbuf[20], c, *s = NULL;
- char __user *p;
+ char tmpbuf[20], *s = NULL;
+ char *p;
unsigned int value;
size_t left, len;
@@ -89,18 +97,17 @@
left = *lenp;
if (write) {
- if (!access_ok(VERIFY_READ, buffer, left))
- return -EFAULT;
p = buffer;
- while (left && __get_user(c, p) >= 0 && isspace(c))
- left--, p++;
+ while (left && isspace(*p)) {
+ left--;
+ p++;
+ }
if (!left)
goto done;
if (left > sizeof(tmpbuf) - 1)
return -EINVAL;
- if (copy_from_user(tmpbuf, p, left))
- return -EFAULT;
+ memcpy(tmpbuf, p, left);
tmpbuf[left] = '\0';
value = simple_strtol(tmpbuf, &s, 0);
@@ -108,8 +115,10 @@
left -= (s - tmpbuf);
if (left && !isspace(*s))
return -EINVAL;
- while (left && isspace(*s))
- left--, s++;
+ while (left && isspace(*s)) {
+ left--;
+ s++;
+ }
} else
left = 0;
*(unsigned int *) table->data = value;
@@ -120,11 +129,9 @@
len = sprintf(tmpbuf, "0x%04x", *(unsigned int *) table->data);
if (len > left)
len = left;
- if (copy_to_user(buffer, tmpbuf, len))
- return -EFAULT;
+ memcpy(buffer, tmpbuf, len);
if ((left -= len) > 0) {
- if (put_user('\n', (char __user *)buffer + len))
- return -EFAULT;
+ *((char *)buffer + len) = '\n';
left--;
}
}
--
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