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 va_start(args, fmt); 50 51 vaf.fmt = fmt; 52 vaf.va = &args; 53 54 fs_err(sdp, "%pV", &vaf); 55 56 va_end(args); 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sd_flags); 72 fs_err(sdp, "withdrawn\n"); 73 dump_stack(); 74 } 75 76 if (sdp-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 int rv; 182 rv = gfs2_lm_withdraw(sdp, 183 "fatal: filesystem consistency error\n" 184 " RG = %llu\n" 185 " function = %s, file = %s, line = %u\n", 186 (unsigned long long)rgd->rd_addr, 187 function, file, line); 188 return rv; 189 } 190 191 /** 192 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw 193 * Returns: -1 if this call withdrew the machine, 194 * -2 if it was already withdrawn 195 */ 196 197 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, 198 const char *type, const char *function, char *file, 199 unsigned int line) 200 { 201 int me; 202 me = gfs2_lm_withdraw(sdp, 203 "fatal: invalid metadata block\n" 204 " bh = %llu (%s)\n" 205 " function = %s, file = %s, line = %u\n", 206 (unsigned long long)bh->b_blocknr, type, 207 function, file, line); 208 return (me) ? -1 : -2; 209 } 210 211 /** 212 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw 213 * Returns: -1 if this call withdrew the machine, 214 * -2 if it was already withdrawn 215 */ 216 217 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, 218 u16 type, u16 t, const char *function, 219 char *file, unsigned int line) 220 { 221 int me; 222 me = gfs2_lm_withdraw(sdp, 223 "fatal: invalid metadata block\n" 224 " bh = %llu (type: exp=%u, found=%u)\n" 225 " function = %s, file = %s, line = %u\n", 226 (unsigned long long)bh->b_blocknr, type, t, 227 function, file, line); 228 return (me) ? -1 : -2; 229 } 230 231 /** 232 * gfs2_io_error_i - Flag an I/O error and withdraw 233 * Returns: -1 if this call withdrew the machine, 234 * 0 if it was already withdrawn 235 */ 236 237 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, 238 unsigned int line) 239 { 240 int rv; 241 rv = gfs2_lm_withdraw(sdp, 242 "fatal: I/O error\n" 243 " function = %s, file = %s, line = %u\n", 244 function, file, line); 245 return rv; 246 } 247 248 /** 249 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw 250 * Returns: -1 if this call withdrew the machine, 251 * 0 if it was already withdrawn 252 */ 253 254 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, 255 const char *function, char *file, unsigned int line) 256 { 257 int rv; 258 rv = gfs2_lm_withdraw(sdp, 259 "fatal: I/O error\n" 260 " block = %llu\n" 261 " function = %s, file = %s, line = %u\n", 262 (unsigned long long)bh->b_blocknr, 263 function, file, line); 264 return rv; 265 } 266 267