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authorDavid Howells <dhowells@redhat.com>2018-05-18 11:46:15 +0100
committerDavid Howells <dhowells@redhat.com>2018-05-18 11:46:15 +0100
commit564def71765caf65040f926c0783b9c27cc6c087 (patch)
treebf7b7051f76e961a082819f5eb126384495d0a89 /fs/proc/internal.h
parent5d9de25d934b9a6e3c9efdce782b0d23d0f1fa2a (diff)
downloadlinux-564def71765caf65040f926c0783b9c27cc6c087.tar.bz2
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 <dhowells@redhat.com>
Diffstat (limited to 'fs/proc/internal.h')
-rw-r--r--fs/proc/internal.h2
1 files changed, 2 insertions, 0 deletions
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