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 <asm/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_rsrv_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lm_unmount(sdp); 70 } 71 fs_err(sdp, "withdrawn\n"); 72 dump_stack(); 73 } 74 75 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) 76 panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname); 77 78 return -1; 79 } 80 81 /** 82 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false 83 * Returns: -1 if this call withdrew the machine, 84 * -2 if it was already withdrawn 85 */ 86 87 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, 88 const char *function, char *file, unsigned int line) 89 { 90 int me; 91 me = gfs2_lm_withdraw(sdp, 92 "fatal: assertion \"%s\" failed\n" 93 " function = %s, file = %s, line = %u\n", 94 assertion, function, file, line); 95 dump_stack(); 96 return (me) ? -1 : -2; 97 } 98 99 /** 100 * gfs2_assert_warn_i - Print a message to the console if @assertion is false 101 * Returns: -1 if we printed something 102 * -2 if we didn't 103 */ 104 105 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, 106 const char *function, char *file, unsigned int line) 107 { 108 if (time_before(jiffies, 109 sdp->sd_last_warning + 110 gfs2_tune_get(sdp, gt_complain_secs) * HZ)) 111 return -2; 112 113 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) 114 fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n", 115 assertion, function, file, line); 116 117 if (sdp->sd_args.ar_debug) 118 BUG(); 119 else 120 dump_stack(); 121 122 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) 123 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n" 124 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", 125 sdp->sd_fsname, assertion, 126 sdp->sd_fsname, function, file, line); 127 128 sdp->sd_last_warning = jiffies; 129 130 return -1; 131 } 132 133 /** 134 * gfs2_consist_i - Flag a filesystem consistency error and withdraw 135 * Returns: -1 if this call withdrew the machine, 136 * 0 if it was already withdrawn 137 */ 138 139 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, 140 char *file, unsigned int line) 141 { 142 int rv; 143 rv = gfs2_lm_withdraw(sdp, 144 "fatal: filesystem consistency error - function = %s, file = %s, line = %u\n", 145 function, file, line); 146 return rv; 147 } 148 149 /** 150 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw 151 * Returns: -1 if this call withdrew the machine, 152 * 0 if it was already withdrawn 153 */ 154 155 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, 156 const char *function, char *file, unsigned int line) 157 { 158 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 159 int rv; 160 rv = gfs2_lm_withdraw(sdp, 161 "fatal: filesystem consistency error\n" 162 " inode = %llu %llu\n" 163 " function = %s, file = %s, line = %u\n", 164 (unsigned long long)ip->i_no_formal_ino, 165 (unsigned long long)ip->i_no_addr, 166 function, file, line); 167 return rv; 168 } 169 170 /** 171 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw 172 * Returns: -1 if this call withdrew the machine, 173 * 0 if it was already withdrawn 174 */ 175 176 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, 177 const char *function, char *file, unsigned int line) 178 { 179 struct gfs2_sbd *sdp = rgd->rd_sbd; 180 int rv; 181 rv = gfs2_lm_withdraw(sdp, 182 "fatal: filesystem consistency error\n" 183 " RG = %llu\n" 184 " function = %s, file = %s, line = %u\n", 185 (unsigned long long)rgd->rd_addr, 186 function, file, line); 187 return rv; 188 } 189 190 /** 191 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw 192 * Returns: -1 if this call withdrew the machine, 193 * -2 if it was already withdrawn 194 */ 195 196 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, 197 const char *type, const char *function, char *file, 198 unsigned int line) 199 { 200 int me; 201 me = gfs2_lm_withdraw(sdp, 202 "fatal: invalid metadata block\n" 203 " bh = %llu (%s)\n" 204 " function = %s, file = %s, line = %u\n", 205 (unsigned long long)bh->b_blocknr, type, 206 function, file, line); 207 return (me) ? -1 : -2; 208 } 209 210 /** 211 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw 212 * Returns: -1 if this call withdrew the machine, 213 * -2 if it was already withdrawn 214 */ 215 216 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, 217 u16 type, u16 t, const char *function, 218 char *file, unsigned int line) 219 { 220 int me; 221 me = gfs2_lm_withdraw(sdp, 222 "fatal: invalid metadata block\n" 223 " bh = %llu (type: exp=%u, found=%u)\n" 224 " function = %s, file = %s, line = %u\n", 225 (unsigned long long)bh->b_blocknr, type, t, 226 function, file, line); 227 return (me) ? -1 : -2; 228 } 229 230 /** 231 * gfs2_io_error_i - Flag an I/O error and withdraw 232 * Returns: -1 if this call withdrew the machine, 233 * 0 if it was already withdrawn 234 */ 235 236 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, 237 unsigned int line) 238 { 239 int rv; 240 rv = gfs2_lm_withdraw(sdp, 241 "fatal: I/O error\n" 242 " function = %s, file = %s, line = %u\n", 243 function, file, line); 244 return rv; 245 } 246 247 /** 248 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw 249 * Returns: -1 if this call withdrew the machine, 250 * 0 if it was already withdrawn 251 */ 252 253 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, 254 const char *function, char *file, unsigned int line) 255 { 256 int rv; 257 rv = gfs2_lm_withdraw(sdp, 258 "fatal: I/O error\n" 259 " block = %llu\n" 260 " function = %s, file = %s, line = %u\n", 261 (unsigned long long)bh->b_blocknr, 262 function, file, line); 263 return rv; 264 } 265 266