Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759777Ab1CDPqE (ORCPT ); Fri, 4 Mar 2011 10:46:04 -0500 Received: from mail-pw0-f46.google.com ([209.85.160.46]:64163 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752228Ab1CDPqD (ORCPT ); Fri, 4 Mar 2011 10:46:03 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:subject:message-id:mime-version:content-type :content-disposition:user-agent; b=XIPJ8EkmQ7IvHDkePxFUxg0koGLeL1+DG1hbnkI28pkhPIEYlWl8qGTR+Hot5vjgXG AFu5fvFERoXlenCUXw/jqbz11K2Y2Zo2VxV1OVnrpC+mBtm7YY5jauINKeAaD517BO3x UKba1g7NdQ+svODWK97HbqxUUqT+Ra0/AypdM= Date: Fri, 4 Mar 2011 23:45:49 +0800 From: Dave Young To: Andrew Morton , Ingo Molnar , David Miller , Don Zickus , linux-kernel@vger.kernel.org Subject: sysctl: add proc_dointvec_bool handler Message-ID: <20110304154549.GA14672@darkstar> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2368 Lines: 60 Add proc_dointvec_bool sysctl handler for cases value is limited to 0 and 1 Signed-off-by: Dave Young --- include/linux/sysctl.h | 2 ++ kernel/sysctl.c | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) --- linux-2.6.orig/kernel/sysctl.c 2011-03-03 11:13:01.986661838 +0800 +++ linux-2.6/kernel/sysctl.c 2011-03-03 11:15:52.196661447 +0800 @@ -2448,6 +2448,33 @@ int proc_dointvec_minmax(struct ctl_tabl do_proc_dointvec_minmax_conv, ¶m); } +/** + * proc_dointvec_bool - read a vector of integers with 0/1 values + * @table: the sysctl table + * @write: %TRUE if this is a write to the sysctl file + * @buffer: the user buffer + * @lenp: the size of the user buffer + * @ppos: file position + * + * Reads/writes up to table->maxlen/sizeof(unsigned int) integer + * values from/to the user buffer, treated as an ASCII string. + * + * This routine will ensure the values are either 0 or 1. + * + * Returns 0 on success. + */ +int proc_dointvec_bool(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + struct do_proc_dointvec_minmax_conv_param param = { + .min = &zero, + .max = &one, + }; + return do_proc_dointvec(table, write, buffer, lenp, ppos, + do_proc_dointvec_minmax_conv, ¶m); +} +EXPORT_SYMBOL(proc_dointvec_bool); + static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos, --- linux-2.6.orig/include/linux/sysctl.h 2010-06-22 14:02:49.000000000 +0800 +++ linux-2.6/include/linux/sysctl.h 2011-03-03 11:16:16.119994725 +0800 @@ -970,6 +970,8 @@ extern int proc_dointvec(struct ctl_tabl void __user *, size_t *, loff_t *); extern int proc_dointvec_minmax(struct ctl_table *, int, void __user *, size_t *, loff_t *); +extern int proc_dointvec_bool(struct ctl_table *, int, + void __user *, size_t *, loff_t *); extern int proc_dointvec_jiffies(struct ctl_table *, int, void __user *, size_t *, loff_t *); extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/