From 564def71765caf65040f926c0783b9c27cc6c087 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 May 2018 11:46:15 +0100 Subject: proc: Add a way to make network proc files writable Provide two extra functions, proc_create_net_data_write() and proc_create_net_single_write() that act like their non-write versions but also set a write method in the proc_dir_entry struct. An internal simple write function is provided that will copy its buffer and hand it to the pde->write() method if available (or give an error if not). The buffer may be modified by the write method. Signed-off-by: David Howells --- fs/proc/internal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/proc/internal.h') diff --git a/fs/proc/internal.h b/fs/proc/internal.h index a318ae5b36b4..916ccc39073d 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -48,6 +48,7 @@ struct proc_dir_entry { const struct seq_operations *seq_ops; int (*single_show)(struct seq_file *, void *); }; + proc_write_t write; void *data; unsigned int state_size; unsigned int low_ino; @@ -187,6 +188,7 @@ static inline bool is_empty_pde(const struct proc_dir_entry *pde) { return S_ISDIR(pde->mode) && !pde->proc_iops; } +extern ssize_t proc_simple_write(struct file *, const char __user *, size_t, loff_t *); /* * inode.c -- cgit