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proc: Add proc_mkdir_data()

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Add proc_mkdir_data() to allow procfs directories to be created that are
annotated at the time of creation with private data rather than doing this
post-creation.  This means no access is then required to the proc_dir_entry
struct to set this.

Signed-off-by: David Howells <[email protected]>
Acked-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
cc: Neela Syam Kolli <[email protected]>
cc: Jerry Chuang <[email protected]>
cc: [email protected]
cc: [email protected]
cc: [email protected]
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
David Howells 2013-04-12 02:48:30 +01:00 • committed by Al Viro
commit 270b5ac215
6 changed files with 28 additions and 33 deletions
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34
fs/proc/generic.c
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@ -428,13 +428,17 @@ struct proc_dir_entry *proc_symlink(const char *name,
}
EXPORT_SYMBOL(proc_symlink);
struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
struct proc_dir_entry *parent)
struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
struct proc_dir_entry *parent, void *data)
{
struct proc_dir_entry *ent;
if (mode == 0)
mode = S_IRUGO | S_IXUGO;
ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
ent->data = data;
if (proc_register(parent, ent) < 0) {
kfree(ent);
ent = NULL;
@ -442,29 +446,19 @@ struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
}
return ent;
}
EXPORT_SYMBOL_GPL(proc_mkdir_data);
struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
struct proc_dir_entry *parent)
{
return proc_mkdir_data(name, mode, parent, NULL);
}
EXPORT_SYMBOL(proc_mkdir_mode);
struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
struct proc_dir_entry *parent)
{
struct proc_dir_entry *ent;
ent = __proc_create(&parent, name, S_IFDIR | S_IRUGO | S_IXUGO, 2);
if (ent) {
ent->data = net;
if (proc_register(parent, ent) < 0) {
kfree(ent);
ent = NULL;
}
}
return ent;
}
EXPORT_SYMBOL_GPL(proc_net_mkdir);
struct proc_dir_entry *proc_mkdir(const char *name,
struct proc_dir_entry *parent)
{
return proc_mkdir_mode(name, S_IRUGO | S_IXUGO, parent);
return proc_mkdir_data(name, 0, parent, NULL);
}
EXPORT_SYMBOL(proc_mkdir);