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sd_flags); 74 fs_err(sdp, "withdrawn\n"); 75 dump_stack(); 76 } 77 78 if (sdp-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