From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/fs/proc/self.c | 29 +++++++++++------------------
1 files changed, 11 insertions(+), 18 deletions(-)
diff --git a/kernel/fs/proc/self.c b/kernel/fs/proc/self.c
index 7922edf..72cd69b 100644
--- a/kernel/fs/proc/self.c
+++ b/kernel/fs/proc/self.c
@@ -12,16 +12,9 @@
struct inode *inode,
struct delayed_call *done)
{
- struct pid_namespace *ns = proc_pid_ns(inode);
+ struct pid_namespace *ns = proc_pid_ns(inode->i_sb);
pid_t tgid = task_tgid_nr_ns(current, ns);
char *name;
-
- /*
- * Not currently supported. Once we can inherit all of struct pid,
- * we can allow this.
- */
- if (current->flags & PF_KTHREAD)
- return ERR_PTR(-EOPNOTSUPP);
if (!tgid)
return ERR_PTR(-ENOENT);
@@ -43,9 +36,10 @@
int proc_setup_self(struct super_block *s)
{
struct inode *root_inode = d_inode(s->s_root);
- struct pid_namespace *ns = proc_pid_ns(root_inode);
+ struct proc_fs_info *fs_info = proc_sb_info(s);
struct dentry *self;
-
+ int ret = -ENOMEM;
+
inode_lock(root_inode);
self = d_alloc_name(s->s_root, "self");
if (self) {
@@ -58,20 +52,19 @@
inode->i_gid = GLOBAL_ROOT_GID;
inode->i_op = &proc_self_inode_operations;
d_add(self, inode);
+ ret = 0;
} else {
dput(self);
- self = ERR_PTR(-ENOMEM);
}
- } else {
- self = ERR_PTR(-ENOMEM);
}
inode_unlock(root_inode);
- if (IS_ERR(self)) {
+
+ if (ret)
pr_err("proc_fill_super: can't allocate /proc/self\n");
- return PTR_ERR(self);
- }
- ns->proc_self = self;
- return 0;
+ else
+ fs_info->proc_self = self;
+
+ return ret;
}
void __init proc_self_init(void)
--
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