1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 5 */ 6 7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 8 9 #include <linux/spinlock.h> 10 #include <linux/completion.h> 11 #include <linux/buffer_head.h> 12 #include <linux/crc32.h> 13 #include <linux/gfs2_ondisk.h> 14 #include <linux/uaccess.h> 15 16 #include "gfs2.h" 17 #include "incore.h" 18 #include "glock.h" 19 #include "rgrp.h" 20 #include "util.h" 21 22 struct kmem_cache *gfs2_glock_cachep __read_mostly; 23 struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly; 24 struct kmem_cache *gfs2_inode_cachep __read_mostly; 25 struct kmem_cache *gfs2_bufdata_cachep __read_mostly; 26 struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; 27 struct kmem_cache *gfs2_quotad_cachep __read_mostly; 28 struct kmem_cache *gfs2_qadata_cachep __read_mostly; 29 mempool_t *gfs2_page_pool __read_mostly; 30 31 void gfs2_assert_i(struct gfs2_sbd *sdp) 32 { 33 fs_emerg(sdp, "fatal assertion failed\n"); 34 } 35 36 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...) 37 { 38 struct lm_lockstruct *ls = &sdp->sd_lockstruct; 39 const struct lm_lockops *lm = ls->ls_ops; 40 va_list args; 41 struct va_format vaf; 42 43 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW && 44 test_and_set_bit(SDF_WITHDRAWN, &sdp->sd_flags)) 45 return 0; 46 47 if (fmt) { 48 va_start(args, fmt); 49 50 vaf.fmt = fmt; 51 vaf.va = &args; 52 53 fs_err(sdp, "%pV", &vaf); 54 55 va_end(args); 56 } 57 58 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) { 59 fs_err(sdp, "about to withdraw this file system\n"); 60 BUG_ON(sdp->sd_args.ar_debug); 61 62 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE); 63 64 if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) 65 wait_for_completion(&sdp->sd_wdack); 66 67 if (lm->lm_unmount) { 68 fs_err(sdp, "telling LM to unmount\n"); 69 lm->lm_unmount(sdp); 70 } 71 set_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags); 72 fs_err(sdp, "withdrawn\n"); 73 dump_stack(); 74 } 75 76 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) 77 panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname); 78 79 return -1; 80 } 81 82 /** 83 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false 84 * Returns: -1 if this call withdrew the machine, 85 * -2 if it was already withdrawn 86 */ 87 88 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, 89 const char *function, char *file, unsigned int line) 90 { 91 int me; 92 me = gfs2_lm_withdraw(sdp, 93 "fatal: assertion \"%s\" failed\n" 94 " function = %s, file = %s, line = %u\n", 95 assertion, function, file, line); 96 dump_stack(); 97 return (me) ? -1 : -2; 98 } 99 100 /** 101 * gfs2_assert_warn_i - Print a message to the console if @assertion is false 102 * Returns: -1 if we printed something 103 * -2 if we didn't 104 */ 105 106 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, 107 const char *function, char *file, unsigned int line) 108 { 109 if (time_before(jiffies, 110 sdp->sd_last_warning + 111 gfs2_tune_get(sdp, gt_complain_secs) * HZ)) 112 return -2; 113 114 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) 115 fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n", 116 assertion, function, file, line); 117 118 if (sdp->sd_args.ar_debug) 119 BUG(); 120 else 121 dump_stack(); 122 123 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) 124 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n" 125 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", 126 sdp->sd_fsname, assertion, 127 sdp->sd_fsname, function, file, line); 128 129 sdp->sd_last_warning = jiffies; 130 131 return -1; 132 } 133 134 /** 135 * gfs2_consist_i - Flag a filesystem consistency error and withdraw 136 * Returns: -1 if this call withdrew the machine, 137 * 0 if it was already withdrawn 138 */ 139 140 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, 141 char *file, unsigned int line) 142 { 143 int rv; 144 rv = gfs2_lm_withdraw(sdp, 145 "fatal: filesystem consistency error - function = %s, file = %s, line = %u\n", 146 function, file, line); 147 return rv; 148 } 149 150 /** 151 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw 152 * Returns: -1 if this call withdrew the machine, 153 * 0 if it was already withdrawn 154 */ 155 156 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, 157 const char *function, char *file, unsigned int line) 158 { 159 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 160 int rv; 161 rv = gfs2_lm_withdraw(sdp, 162 "fatal: filesystem consistency error\n" 163 " inode = %llu %llu\n" 164 " function = %s, file = %s, line = %u\n", 165 (unsigned long long)ip->i_no_formal_ino, 166 (unsigned long long)ip->i_no_addr, 167 function, file, line); 168 return rv; 169 } 170 171 /** 172 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw 173 * Returns: -1 if this call withdrew the machine, 174 * 0 if it was already withdrawn 175 */ 176 177 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, 178 const char *function, char *file, unsigned int line) 179 { 180 struct gfs2_sbd *sdp = rgd->rd_sbd; 181 char fs_id_buf[sizeof(sdp->sd_fsname) + 7]; 182 int rv; 183 184 sprintf(fs_id_buf, "fsid=%s: ", sdp->sd_fsname); 185 gfs2_rgrp_dump(NULL, rgd->rd_gl, fs_id_buf); 186 rv = gfs2_lm_withdraw(sdp, 187 "fatal: filesystem consistency error\n" 188 " RG = %llu\n" 189 " function = %s, file = %s, line = %u\n", 190 (unsigned long long)rgd->rd_addr, 191 function, file, line); 192 return rv; 193 } 194 195 /** 196 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw 197 * Returns: -1 if this call withdrew the machine, 198 * -2 if it was already withdrawn 199 */ 200 201 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, 202 const char *type, const char *function, char *file, 203 unsigned int line) 204 { 205 int me; 206 me = gfs2_lm_withdraw(sdp, 207 "fatal: invalid metadata block\n" 208 " bh = %llu (%s)\n" 209 " function = %s, file = %s, line = %u\n", 210 (unsigned long long)bh->b_blocknr, type, 211 function, file, line); 212 return (me) ? -1 : -2; 213 } 214 215 /** 216 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw 217 * Returns: -1 if this call withdrew the machine, 218 * -2 if it was already withdrawn 219 */ 220 221 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, 222 u16 type, u16 t, const char *function, 223 char *file, unsigned int line) 224 { 225 int me; 226 me = gfs2_lm_withdraw(sdp, 227 "fatal: invalid metadata block\n" 228 " bh = %llu (type: exp=%u, found=%u)\n" 229 " function = %s, file = %s, line = %u\n", 230 (unsigned long long)bh->b_blocknr, type, t, 231 function, file, line); 232 return (me) ? -1 : -2; 233 } 234 235 /** 236 * gfs2_io_error_i - Flag an I/O error and withdraw 237 * Returns: -1 if this call withdrew the machine, 238 * 0 if it was already withdrawn 239 */ 240 241 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, 242 unsigned int line) 243 { 244 int rv; 245 rv = gfs2_lm_withdraw(sdp, 246 "fatal: I/O error\n" 247 " function = %s, file = %s, line = %u\n", 248 function, file, line); 249 return rv; 250 } 251 252 /** 253 * gfs2_io_error_bh_i - Flag a buffer I/O error 254 * @withdraw: withdraw the filesystem 255 */ 256 257 void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, 258 const char *function, char *file, unsigned int line, 259 bool withdraw) 260 { 261 if (!gfs2_withdrawn(sdp)) 262 fs_err(sdp, 263 "fatal: I/O error\n" 264 " block = %llu\n" 265 " function = %s, file = %s, line = %u\n", 266 (unsigned long long)bh->b_blocknr, 267 function, file, line); 268 if (withdraw) 269 gfs2_lm_withdraw(sdp, NULL); 270 } 271 272