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![Eric W. Biederman](/assets/img/avatar_default.png)
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>
201 lines
5.4 KiB
C
201 lines
5.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)
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*/
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#include <linux/mm.h>
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <net/ax25.h>
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#include <net/netrom.h>
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/*
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* Values taken from NET/ROM documentation.
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*/
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static int min_quality[] = {0}, max_quality[] = {255};
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static int min_obs[] = {0}, max_obs[] = {255};
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static int min_ttl[] = {0}, max_ttl[] = {255};
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static int min_t1[] = {5 * HZ};
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static int max_t1[] = {600 * HZ};
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static int min_n2[] = {2}, max_n2[] = {127};
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static int min_t2[] = {1 * HZ};
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static int max_t2[] = {60 * HZ};
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static int min_t4[] = {1 * HZ};
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static int max_t4[] = {1000 * HZ};
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static int min_window[] = {1}, max_window[] = {127};
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static int min_idle[] = {0 * HZ};
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static int max_idle[] = {65535 * HZ};
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static int min_route[] = {0}, max_route[] = {1};
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static int min_fails[] = {1}, max_fails[] = {10};
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static int min_reset[] = {0}, max_reset[] = {1};
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static struct ctl_table_header *nr_table_header;
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static ctl_table nr_table[] = {
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{
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.ctl_name = NET_NETROM_DEFAULT_PATH_QUALITY,
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.procname = "default_path_quality",
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.data = &sysctl_netrom_default_path_quality,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_quality,
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.extra2 = &max_quality
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},
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{
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.ctl_name = NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER,
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.procname = "obsolescence_count_initialiser",
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.data = &sysctl_netrom_obsolescence_count_initialiser,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_obs,
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.extra2 = &max_obs
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},
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{
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.ctl_name = NET_NETROM_NETWORK_TTL_INITIALISER,
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.procname = "network_ttl_initialiser",
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.data = &sysctl_netrom_network_ttl_initialiser,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_ttl,
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.extra2 = &max_ttl
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},
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{
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.ctl_name = NET_NETROM_TRANSPORT_TIMEOUT,
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.procname = "transport_timeout",
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.data = &sysctl_netrom_transport_timeout,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_t1,
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.extra2 = &max_t1
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},
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{
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.ctl_name = NET_NETROM_TRANSPORT_MAXIMUM_TRIES,
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.procname = "transport_maximum_tries",
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.data = &sysctl_netrom_transport_maximum_tries,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_n2,
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.extra2 = &max_n2
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},
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{
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.ctl_name = NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY,
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.procname = "transport_acknowledge_delay",
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.data = &sysctl_netrom_transport_acknowledge_delay,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_t2,
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.extra2 = &max_t2
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},
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{
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.ctl_name = NET_NETROM_TRANSPORT_BUSY_DELAY,
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.procname = "transport_busy_delay",
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.data = &sysctl_netrom_transport_busy_delay,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_t4,
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.extra2 = &max_t4
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},
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{
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.ctl_name = NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE,
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.procname = "transport_requested_window_size",
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.data = &sysctl_netrom_transport_requested_window_size,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_window,
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.extra2 = &max_window
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},
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{
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.ctl_name = NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT,
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.procname = "transport_no_activity_timeout",
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.data = &sysctl_netrom_transport_no_activity_timeout,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_idle,
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.extra2 = &max_idle
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},
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{
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.ctl_name = NET_NETROM_ROUTING_CONTROL,
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.procname = "routing_control",
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.data = &sysctl_netrom_routing_control,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_route,
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.extra2 = &max_route
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},
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{
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.ctl_name = NET_NETROM_LINK_FAILS_COUNT,
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.procname = "link_fails_count",
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.data = &sysctl_netrom_link_fails_count,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_fails,
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.extra2 = &max_fails
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},
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{
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.ctl_name = NET_NETROM_RESET,
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.procname = "reset",
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.data = &sysctl_netrom_reset_circuit,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec_minmax,
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.strategy = &sysctl_intvec,
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.extra1 = &min_reset,
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.extra2 = &max_reset
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},
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{ .ctl_name = 0 }
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};
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static ctl_table nr_dir_table[] = {
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{
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.ctl_name = NET_NETROM,
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.procname = "netrom",
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.mode = 0555,
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.child = nr_table
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},
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{ .ctl_name = 0 }
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};
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static ctl_table nr_root_table[] = {
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{
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.ctl_name = CTL_NET,
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.procname = "net",
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.mode = 0555,
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.child = nr_dir_table
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},
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{ .ctl_name = 0 }
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};
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void __init nr_register_sysctl(void)
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{
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nr_table_header = register_sysctl_table(nr_root_table);
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}
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void nr_unregister_sysctl(void)
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{
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unregister_sysctl_table(nr_table_header);
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}
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