修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/include/linux/file.h
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@@ -9,6 +9,7 @@
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 #include <linux/compiler.h>
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 #include <linux/types.h>
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 #include <linux/posix_types.h>
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+#include <linux/errno.h>
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 struct file;
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@@ -16,6 +17,7 @@
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 extern void fput_many(struct file *, unsigned int);
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 struct file_operations;
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+struct task_struct;
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 struct vfsmount;
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 struct dentry;
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 struct inode;
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@@ -47,6 +49,7 @@
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 extern struct file *fget(unsigned int fd);
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 extern struct file *fget_many(unsigned int fd, unsigned int refs);
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 extern struct file *fget_raw(unsigned int fd);
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+extern struct file *fget_task(struct task_struct *task, unsigned int fd);
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 extern unsigned long __fdget(unsigned int fd);
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 extern unsigned long __fdget_raw(unsigned int fd);
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 extern unsigned long __fdget_pos(unsigned int fd);
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@@ -83,12 +86,33 @@
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 extern int replace_fd(unsigned fd, struct file *file, unsigned flags);
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 extern void set_close_on_exec(unsigned int fd, int flag);
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 extern bool get_close_on_exec(unsigned int fd);
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+extern int __get_unused_fd_flags(unsigned flags, unsigned long nofile);
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 extern int get_unused_fd_flags(unsigned flags);
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 extern void put_unused_fd(unsigned int fd);
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 extern void fd_install(unsigned int fd, struct file *file);
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+extern int __receive_fd(int fd, struct file *file, int __user *ufd,
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+			unsigned int o_flags);
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+static inline int receive_fd_user(struct file *file, int __user *ufd,
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+				  unsigned int o_flags)
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+{
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+	if (ufd == NULL)
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+		return -EFAULT;
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+	return __receive_fd(-1, file, ufd, o_flags);
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+}
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+static inline int receive_fd(struct file *file, unsigned int o_flags)
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+{
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+	return __receive_fd(-1, file, NULL, o_flags);
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+}
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+static inline int receive_fd_replace(int fd, struct file *file, unsigned int o_flags)
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+{
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+	return __receive_fd(fd, file, NULL, o_flags);
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+}
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+
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 extern void flush_delayed_fput(void);
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 extern void __fput_sync(struct file *);
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+extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
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+
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 #endif /* __LINUX_FILE_H */