From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/net/atm/resources.c | 124 +++++++++++++---------------------------
1 files changed, 41 insertions(+), 83 deletions(-)
diff --git a/kernel/net/atm/resources.c b/kernel/net/atm/resources.c
index bada395..3ad39ae 100644
--- a/kernel/net/atm/resources.c
+++ b/kernel/net/atm/resources.c
@@ -193,92 +193,48 @@
return error ? -EFAULT : 0;
}
-int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat)
+int atm_getnames(void __user *buf, int __user *iobuf_len)
{
- void __user *buf;
- int error, len, number, size = 0;
+ int error, len, size = 0;
struct atm_dev *dev;
struct list_head *p;
int *tmp_buf, *tmp_p;
- int __user *sioc_len;
- int __user *iobuf_len;
-#ifndef CONFIG_COMPAT
- compat = 0; /* Just so the compiler _knows_ */
-#endif
-
- switch (cmd) {
- case ATM_GETNAMES:
- if (compat) {
-#ifdef CONFIG_COMPAT
- struct compat_atm_iobuf __user *ciobuf = arg;
- compat_uptr_t cbuf;
- iobuf_len = &ciobuf->length;
- if (get_user(cbuf, &ciobuf->buffer))
- return -EFAULT;
- buf = compat_ptr(cbuf);
-#endif
- } else {
- struct atm_iobuf __user *iobuf = arg;
- iobuf_len = &iobuf->length;
- if (get_user(buf, &iobuf->buffer))
- return -EFAULT;
- }
- if (get_user(len, iobuf_len))
- return -EFAULT;
- mutex_lock(&atm_dev_mutex);
- list_for_each(p, &atm_devs)
- size += sizeof(int);
- if (size > len) {
- mutex_unlock(&atm_dev_mutex);
- return -E2BIG;
- }
- tmp_buf = kmalloc(size, GFP_ATOMIC);
- if (!tmp_buf) {
- mutex_unlock(&atm_dev_mutex);
- return -ENOMEM;
- }
- tmp_p = tmp_buf;
- list_for_each(p, &atm_devs) {
- dev = list_entry(p, struct atm_dev, dev_list);
- *tmp_p++ = dev->number;
- }
+ if (get_user(len, iobuf_len))
+ return -EFAULT;
+ mutex_lock(&atm_dev_mutex);
+ list_for_each(p, &atm_devs)
+ size += sizeof(int);
+ if (size > len) {
mutex_unlock(&atm_dev_mutex);
- error = ((copy_to_user(buf, tmp_buf, size)) ||
- put_user(size, iobuf_len))
- ? -EFAULT : 0;
- kfree(tmp_buf);
- return error;
- default:
- break;
+ return -E2BIG;
}
-
- if (compat) {
-#ifdef CONFIG_COMPAT
- struct compat_atmif_sioc __user *csioc = arg;
- compat_uptr_t carg;
-
- sioc_len = &csioc->length;
- if (get_user(carg, &csioc->arg))
- return -EFAULT;
- buf = compat_ptr(carg);
-
- if (get_user(len, &csioc->length))
- return -EFAULT;
- if (get_user(number, &csioc->number))
- return -EFAULT;
-#endif
- } else {
- struct atmif_sioc __user *sioc = arg;
-
- sioc_len = &sioc->length;
- if (get_user(buf, &sioc->arg))
- return -EFAULT;
- if (get_user(len, &sioc->length))
- return -EFAULT;
- if (get_user(number, &sioc->number))
- return -EFAULT;
+ tmp_buf = kmalloc(size, GFP_ATOMIC);
+ if (!tmp_buf) {
+ mutex_unlock(&atm_dev_mutex);
+ return -ENOMEM;
}
+ tmp_p = tmp_buf;
+ list_for_each(p, &atm_devs) {
+ dev = list_entry(p, struct atm_dev, dev_list);
+ *tmp_p++ = dev->number;
+ }
+ mutex_unlock(&atm_dev_mutex);
+ error = ((copy_to_user(buf, tmp_buf, size)) ||
+ put_user(size, iobuf_len))
+ ? -EFAULT : 0;
+ kfree(tmp_buf);
+ return error;
+}
+
+int atm_dev_ioctl(unsigned int cmd, void __user *buf, int __user *sioc_len,
+ int number, int compat)
+{
+ int error, len, size = 0;
+ struct atm_dev *dev;
+
+ if (get_user(len, sioc_len))
+ return -EFAULT;
dev = try_then_request_module(atm_dev_lookup(number), "atm-device-%d",
number);
@@ -310,7 +266,7 @@
goto done;
}
}
- /* fall through */
+ fallthrough;
case ATM_SETESIF:
{
unsigned char esi[ESI_LEN];
@@ -332,7 +288,7 @@
error = -EPERM;
goto done;
}
- /* fall through */
+ fallthrough;
case ATM_GETSTAT:
size = sizeof(struct atm_dev_stats);
error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);
@@ -405,7 +361,7 @@
error = -EINVAL;
goto done;
}
- /* fall through */
+ fallthrough;
case ATM_SETCIRANGE:
case SONET_GETSTATZ:
case SONET_SETDIAG:
@@ -415,9 +371,9 @@
error = -EPERM;
goto done;
}
- /* fall through */
+ fallthrough;
default:
- if (compat) {
+ if (IS_ENABLED(CONFIG_COMPAT) && compat) {
#ifdef CONFIG_COMPAT
if (!dev->ops->compat_ioctl) {
error = -EINVAL;
@@ -447,6 +403,7 @@
return error;
}
+#ifdef CONFIG_PROC_FS
void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos)
{
mutex_lock(&atm_dev_mutex);
@@ -462,3 +419,4 @@
{
return seq_list_next(v, &atm_devs, pos);
}
+#endif
--
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