linux/drivers/scsi/scsi_sysctl.c

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/*
* Copyright (C) 2003 Christoph Hellwig.
* Released under GPL v2.
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sysctl.h>
#include "scsi_logging.h"
#include "scsi_priv.h"
static ctl_table scsi_table[] = {
{ .procname = "logging_level",
.data = &scsi_logging_level,
.maxlen = sizeof(scsi_logging_level),
.mode = 0644,
.proc_handler = &proc_dointvec },
{ }
};
static ctl_table scsi_dir_table[] = {
{ .procname = "scsi",
.mode = 0555,
.child = scsi_table },
{ }
};
static ctl_table scsi_root_table[] = {
{ .procname = "dev",
.mode = 0555,
.child = scsi_dir_table },
{ }
};
static struct ctl_table_header *scsi_table_header;
int __init scsi_init_sysctl(void)
{
[PATCH] sysctl: remove insert_at_head from register_sysctl The semantic effect of insert_at_head is that it would allow new registered sysctl entries to override existing sysctl entries of the same name. Which is pain for caching and the proc interface never implemented. I have done an audit and discovered that none of the current users of register_sysctl care as (excpet for directories) they do not register duplicate sysctl entries. So this patch simply removes the support for overriding existing entries in the sys_sysctl interface since no one uses it or cares and it makes future enhancments harder. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Andi Kleen <ak@muc.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Corey Minyard <minyard@acm.org> Cc: Neil Brown <neilb@suse.de> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jan Kara <jack@ucw.cz> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: David Chinner <dgc@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:34:09 +00:00
scsi_table_header = register_sysctl_table(scsi_root_table);
if (!scsi_table_header)
return -ENOMEM;
return 0;
}
void scsi_exit_sysctl(void)
{
unregister_sysctl_table(scsi_table_header);
}