Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2001-2004 Silicon Graphics, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of version 2 of the GNU General Public License as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it would be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 11 | * |
| 12 | * Further, this software is distributed without any warranty that it is |
| 13 | * free of the rightful claim of any third person regarding infringement |
| 14 | * or the like. Any license provided herein, whether implied or |
| 15 | * otherwise, applies only to this software file. Patent licenses, if |
| 16 | * any, provided herein do not apply to combinations of this program with |
| 17 | * other software, or any other product whatsoever. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write the Free Software Foundation, Inc., 59 |
| 21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 22 | * |
| 23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, |
| 24 | * Mountain View, CA 94043, or: |
| 25 | * |
| 26 | * http://www.sgi.com |
| 27 | * |
| 28 | * For further information regarding this notice, see: |
| 29 | * |
| 30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ |
| 31 | */ |
| 32 | |
| 33 | #include "xfs.h" |
| 34 | #include "xfs_rw.h" |
| 35 | #include <linux/sysctl.h> |
| 36 | #include <linux/proc_fs.h> |
| 37 | |
| 38 | |
| 39 | static struct ctl_table_header *xfs_table_header; |
| 40 | |
| 41 | |
| 42 | #ifdef CONFIG_PROC_FS |
| 43 | STATIC int |
| 44 | xfs_stats_clear_proc_handler( |
| 45 | ctl_table *ctl, |
| 46 | int write, |
| 47 | struct file *filp, |
| 48 | void __user *buffer, |
| 49 | size_t *lenp, |
| 50 | loff_t *ppos) |
| 51 | { |
| 52 | int c, ret, *valp = ctl->data; |
| 53 | __uint32_t vn_active; |
| 54 | |
| 55 | ret = proc_dointvec_minmax(ctl, write, filp, buffer, lenp, ppos); |
| 56 | |
| 57 | if (!ret && write && *valp) { |
| 58 | printk("XFS Clearing xfsstats\n"); |
| 59 | for (c = 0; c < NR_CPUS; c++) { |
| 60 | if (!cpu_possible(c)) continue; |
| 61 | preempt_disable(); |
| 62 | /* save vn_active, it's a universal truth! */ |
| 63 | vn_active = per_cpu(xfsstats, c).vn_active; |
| 64 | memset(&per_cpu(xfsstats, c), 0, |
| 65 | sizeof(struct xfsstats)); |
| 66 | per_cpu(xfsstats, c).vn_active = vn_active; |
| 67 | preempt_enable(); |
| 68 | } |
| 69 | xfs_stats_clear = 0; |
| 70 | } |
| 71 | |
| 72 | return ret; |
| 73 | } |
| 74 | #endif /* CONFIG_PROC_FS */ |
| 75 | |
| 76 | STATIC ctl_table xfs_table[] = { |
| 77 | {XFS_RESTRICT_CHOWN, "restrict_chown", &xfs_params.restrict_chown.val, |
| 78 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 79 | &sysctl_intvec, NULL, |
| 80 | &xfs_params.restrict_chown.min, &xfs_params.restrict_chown.max}, |
| 81 | |
| 82 | {XFS_SGID_INHERIT, "irix_sgid_inherit", &xfs_params.sgid_inherit.val, |
| 83 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 84 | &sysctl_intvec, NULL, |
| 85 | &xfs_params.sgid_inherit.min, &xfs_params.sgid_inherit.max}, |
| 86 | |
| 87 | {XFS_SYMLINK_MODE, "irix_symlink_mode", &xfs_params.symlink_mode.val, |
| 88 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 89 | &sysctl_intvec, NULL, |
| 90 | &xfs_params.symlink_mode.min, &xfs_params.symlink_mode.max}, |
| 91 | |
| 92 | {XFS_PANIC_MASK, "panic_mask", &xfs_params.panic_mask.val, |
| 93 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 94 | &sysctl_intvec, NULL, |
| 95 | &xfs_params.panic_mask.min, &xfs_params.panic_mask.max}, |
| 96 | |
| 97 | {XFS_ERRLEVEL, "error_level", &xfs_params.error_level.val, |
| 98 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 99 | &sysctl_intvec, NULL, |
| 100 | &xfs_params.error_level.min, &xfs_params.error_level.max}, |
| 101 | |
| 102 | {XFS_SYNCD_TIMER, "xfssyncd_centisecs", &xfs_params.syncd_timer.val, |
| 103 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 104 | &sysctl_intvec, NULL, |
| 105 | &xfs_params.syncd_timer.min, &xfs_params.syncd_timer.max}, |
| 106 | |
| 107 | {XFS_INHERIT_SYNC, "inherit_sync", &xfs_params.inherit_sync.val, |
| 108 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 109 | &sysctl_intvec, NULL, |
| 110 | &xfs_params.inherit_sync.min, &xfs_params.inherit_sync.max}, |
| 111 | |
| 112 | {XFS_INHERIT_NODUMP, "inherit_nodump", &xfs_params.inherit_nodump.val, |
| 113 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 114 | &sysctl_intvec, NULL, |
| 115 | &xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max}, |
| 116 | |
| 117 | {XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val, |
| 118 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 119 | &sysctl_intvec, NULL, |
| 120 | &xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max}, |
| 121 | |
| 122 | {XFS_BUF_TIMER, "xfsbufd_centisecs", &xfs_params.xfs_buf_timer.val, |
| 123 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 124 | &sysctl_intvec, NULL, |
| 125 | &xfs_params.xfs_buf_timer.min, &xfs_params.xfs_buf_timer.max}, |
| 126 | |
| 127 | {XFS_BUF_AGE, "age_buffer_centisecs", &xfs_params.xfs_buf_age.val, |
| 128 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 129 | &sysctl_intvec, NULL, |
| 130 | &xfs_params.xfs_buf_age.min, &xfs_params.xfs_buf_age.max}, |
| 131 | |
| 132 | {XFS_INHERIT_NOSYM, "inherit_nosymlinks", &xfs_params.inherit_nosym.val, |
| 133 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 134 | &sysctl_intvec, NULL, |
| 135 | &xfs_params.inherit_nosym.min, &xfs_params.inherit_nosym.max}, |
| 136 | |
| 137 | {XFS_ROTORSTEP, "rotorstep", &xfs_params.rotorstep.val, |
| 138 | sizeof(int), 0644, NULL, &proc_dointvec_minmax, |
| 139 | &sysctl_intvec, NULL, |
| 140 | &xfs_params.rotorstep.min, &xfs_params.rotorstep.max}, |
| 141 | |
| 142 | /* please keep this the last entry */ |
| 143 | #ifdef CONFIG_PROC_FS |
| 144 | {XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val, |
| 145 | sizeof(int), 0644, NULL, &xfs_stats_clear_proc_handler, |
| 146 | &sysctl_intvec, NULL, |
| 147 | &xfs_params.stats_clear.min, &xfs_params.stats_clear.max}, |
| 148 | #endif /* CONFIG_PROC_FS */ |
| 149 | |
| 150 | {0} |
| 151 | }; |
| 152 | |
| 153 | STATIC ctl_table xfs_dir_table[] = { |
| 154 | {FS_XFS, "xfs", NULL, 0, 0555, xfs_table}, |
| 155 | {0} |
| 156 | }; |
| 157 | |
| 158 | STATIC ctl_table xfs_root_table[] = { |
| 159 | {CTL_FS, "fs", NULL, 0, 0555, xfs_dir_table}, |
| 160 | {0} |
| 161 | }; |
| 162 | |
| 163 | void |
| 164 | xfs_sysctl_register(void) |
| 165 | { |
| 166 | xfs_table_header = register_sysctl_table(xfs_root_table, 1); |
| 167 | } |
| 168 | |
| 169 | void |
| 170 | xfs_sysctl_unregister(void) |
| 171 | { |
| 172 | if (xfs_table_header) |
| 173 | unregister_sysctl_table(xfs_table_header); |
| 174 | } |