1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2001-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #include "xfs.h" 7 #include "xfs_error.h" 8 9 static struct ctl_table_header *xfs_table_header; 10 11 #ifdef CONFIG_PROC_FS 12 STATIC int 13 xfs_stats_clear_proc_handler( 14 struct ctl_table *ctl, 15 int write, 16 void *buffer, 17 size_t *lenp, 18 loff_t *ppos) 19 { 20 int ret, *valp = ctl->data; 21 22 ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); 23 24 if (!ret && write && *valp) { 25 xfs_stats_clearall(xfsstats.xs_stats); 26 xfs_stats_clear = 0; 27 } 28 29 return ret; 30 } 31 32 STATIC int 33 xfs_panic_mask_proc_handler( 34 struct ctl_table *ctl, 35 int write, 36 void *buffer, 37 size_t *lenp, 38 loff_t *ppos) 39 { 40 int ret, *valp = ctl->data; 41 42 ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); 43 if (!ret && write) { 44 xfs_panic_mask = *valp; 45 #ifdef DEBUG 46 xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES); 47 #endif 48 } 49 return ret; 50 } 51 #endif /* CONFIG_PROC_FS */ 52 53 STATIC int 54 xfs_deprecated_dointvec_minmax( 55 struct ctl_table *ctl, 56 int write, 57 void *buffer, 58 size_t *lenp, 59 loff_t *ppos) 60 { 61 if (write) { 62 printk_ratelimited(KERN_WARNING 63 "XFS: %s sysctl option is deprecated.\n", 64 ctl->procname); 65 } 66 return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); 67 } 68 69 static struct ctl_table xfs_table[] = { 70 { 71 .procname = "irix_sgid_inherit", 72 .data = &xfs_params.sgid_inherit.val, 73 .maxlen = sizeof(int), 74 .mode = 0644, 75 .proc_handler = xfs_deprecated_dointvec_minmax, 76 .extra1 = &xfs_params.sgid_inherit.min, 77 .extra2 = &xfs_params.sgid_inherit.max 78 }, 79 { 80 .procname = "irix_symlink_mode", 81 .data = &xfs_params.symlink_mode.val, 82 .maxlen = sizeof(int), 83 .mode = 0644, 84 .proc_handler = xfs_deprecated_dointvec_minmax, 85 .extra1 = &xfs_params.symlink_mode.min, 86 .extra2 = &xfs_params.symlink_mode.max 87 }, 88 { 89 .procname = "panic_mask", 90 .data = &xfs_params.panic_mask.val, 91 .maxlen = sizeof(int), 92 .mode = 0644, 93 .proc_handler = xfs_panic_mask_proc_handler, 94 .extra1 = &xfs_params.panic_mask.min, 95 .extra2 = &xfs_params.panic_mask.max 96 }, 97 98 { 99 .procname = "error_level", 100 .data = &xfs_params.error_level.val, 101 .maxlen = sizeof(int), 102 .mode = 0644, 103 .proc_handler = proc_dointvec_minmax, 104 .extra1 = &xfs_params.error_level.min, 105 .extra2 = &xfs_params.error_level.max 106 }, 107 { 108 .procname = "xfssyncd_centisecs", 109 .data = &xfs_params.syncd_timer.val, 110 .maxlen = sizeof(int), 111 .mode = 0644, 112 .proc_handler = proc_dointvec_minmax, 113 .extra1 = &xfs_params.syncd_timer.min, 114 .extra2 = &xfs_params.syncd_timer.max 115 }, 116 { 117 .procname = "inherit_sync", 118 .data = &xfs_params.inherit_sync.val, 119 .maxlen = sizeof(int), 120 .mode = 0644, 121 .proc_handler = proc_dointvec_minmax, 122 .extra1 = &xfs_params.inherit_sync.min, 123 .extra2 = &xfs_params.inherit_sync.max 124 }, 125 { 126 .procname = "inherit_nodump", 127 .data = &xfs_params.inherit_nodump.val, 128 .maxlen = sizeof(int), 129 .mode = 0644, 130 .proc_handler = proc_dointvec_minmax, 131 .extra1 = &xfs_params.inherit_nodump.min, 132 .extra2 = &xfs_params.inherit_nodump.max 133 }, 134 { 135 .procname = "inherit_noatime", 136 .data = &xfs_params.inherit_noatim.val, 137 .maxlen = sizeof(int), 138 .mode = 0644, 139 .proc_handler = proc_dointvec_minmax, 140 .extra1 = &xfs_params.inherit_noatim.min, 141 .extra2 = &xfs_params.inherit_noatim.max 142 }, 143 { 144 .procname = "inherit_nosymlinks", 145 .data = &xfs_params.inherit_nosym.val, 146 .maxlen = sizeof(int), 147 .mode = 0644, 148 .proc_handler = proc_dointvec_minmax, 149 .extra1 = &xfs_params.inherit_nosym.min, 150 .extra2 = &xfs_params.inherit_nosym.max 151 }, 152 { 153 .procname = "rotorstep", 154 .data = &xfs_params.rotorstep.val, 155 .maxlen = sizeof(int), 156 .mode = 0644, 157 .proc_handler = proc_dointvec_minmax, 158 .extra1 = &xfs_params.rotorstep.min, 159 .extra2 = &xfs_params.rotorstep.max 160 }, 161 { 162 .procname = "inherit_nodefrag", 163 .data = &xfs_params.inherit_nodfrg.val, 164 .maxlen = sizeof(int), 165 .mode = 0644, 166 .proc_handler = proc_dointvec_minmax, 167 .extra1 = &xfs_params.inherit_nodfrg.min, 168 .extra2 = &xfs_params.inherit_nodfrg.max 169 }, 170 { 171 .procname = "filestream_centisecs", 172 .data = &xfs_params.fstrm_timer.val, 173 .maxlen = sizeof(int), 174 .mode = 0644, 175 .proc_handler = proc_dointvec_minmax, 176 .extra1 = &xfs_params.fstrm_timer.min, 177 .extra2 = &xfs_params.fstrm_timer.max, 178 }, 179 { 180 .procname = "speculative_prealloc_lifetime", 181 .data = &xfs_params.blockgc_timer.val, 182 .maxlen = sizeof(int), 183 .mode = 0644, 184 .proc_handler = proc_dointvec_minmax, 185 .extra1 = &xfs_params.blockgc_timer.min, 186 .extra2 = &xfs_params.blockgc_timer.max, 187 }, 188 { 189 .procname = "speculative_cow_prealloc_lifetime", 190 .data = &xfs_params.blockgc_timer.val, 191 .maxlen = sizeof(int), 192 .mode = 0644, 193 .proc_handler = xfs_deprecated_dointvec_minmax, 194 .extra1 = &xfs_params.blockgc_timer.min, 195 .extra2 = &xfs_params.blockgc_timer.max, 196 }, 197 /* please keep this the last entry */ 198 #ifdef CONFIG_PROC_FS 199 { 200 .procname = "stats_clear", 201 .data = &xfs_params.stats_clear.val, 202 .maxlen = sizeof(int), 203 .mode = 0644, 204 .proc_handler = xfs_stats_clear_proc_handler, 205 .extra1 = &xfs_params.stats_clear.min, 206 .extra2 = &xfs_params.stats_clear.max 207 }, 208 #endif /* CONFIG_PROC_FS */ 209 210 {} 211 }; 212 213 static struct ctl_table xfs_dir_table[] = { 214 { 215 .procname = "xfs", 216 .mode = 0555, 217 .child = xfs_table 218 }, 219 {} 220 }; 221 222 static struct ctl_table xfs_root_table[] = { 223 { 224 .procname = "fs", 225 .mode = 0555, 226 .child = xfs_dir_table 227 }, 228 {} 229 }; 230 231 int 232 xfs_sysctl_register(void) 233 { 234 xfs_table_header = register_sysctl_table(xfs_root_table); 235 if (!xfs_table_header) 236 return -ENOMEM; 237 return 0; 238 } 239 240 void 241 xfs_sysctl_unregister(void) 242 { 243 unregister_sysctl_table(xfs_table_header); 244 } 245