1 /* 2 * Copyright (c) 2011 Red Hat, Inc. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program; if not, write the Free Software Foundation, 15 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 16 */ 17 18 #include "xfs.h" 19 #include "xfs_fs.h" 20 #include "xfs_error.h" 21 #include "xfs_format.h" 22 #include "xfs_log_format.h" 23 #include "xfs_trans_resv.h" 24 #include "xfs_mount.h" 25 26 /* 27 * XFS logging functions 28 */ 29 static void 30 __xfs_printk( 31 const char *level, 32 const struct xfs_mount *mp, 33 struct va_format *vaf) 34 { 35 if (mp && mp->m_fsname) { 36 printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf); 37 return; 38 } 39 printk("%sXFS: %pV\n", level, vaf); 40 } 41 42 #define define_xfs_printk_level(func, kern_level) \ 43 void func(const struct xfs_mount *mp, const char *fmt, ...) \ 44 { \ 45 struct va_format vaf; \ 46 va_list args; \ 47 int level; \ 48 \ 49 va_start(args, fmt); \ 50 \ 51 vaf.fmt = fmt; \ 52 vaf.va = &args; \ 53 \ 54 __xfs_printk(kern_level, mp, &vaf); \ 55 va_end(args); \ 56 \ 57 if (!kstrtoint(kern_level, 0, &level) && \ 58 level <= LOGLEVEL_ERR && \ 59 xfs_error_level >= XFS_ERRLEVEL_HIGH) \ 60 xfs_stack_trace(); \ 61 } \ 62 63 define_xfs_printk_level(xfs_emerg, KERN_EMERG); 64 define_xfs_printk_level(xfs_alert, KERN_ALERT); 65 define_xfs_printk_level(xfs_crit, KERN_CRIT); 66 define_xfs_printk_level(xfs_err, KERN_ERR); 67 define_xfs_printk_level(xfs_warn, KERN_WARNING); 68 define_xfs_printk_level(xfs_notice, KERN_NOTICE); 69 define_xfs_printk_level(xfs_info, KERN_INFO); 70 #ifdef DEBUG 71 define_xfs_printk_level(xfs_debug, KERN_DEBUG); 72 #endif 73 74 void 75 xfs_alert_tag( 76 const struct xfs_mount *mp, 77 int panic_tag, 78 const char *fmt, ...) 79 { 80 struct va_format vaf; 81 va_list args; 82 int do_panic = 0; 83 84 if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) { 85 xfs_alert(mp, "Transforming an alert into a BUG."); 86 do_panic = 1; 87 } 88 89 va_start(args, fmt); 90 91 vaf.fmt = fmt; 92 vaf.va = &args; 93 94 __xfs_printk(KERN_ALERT, mp, &vaf); 95 va_end(args); 96 97 BUG_ON(do_panic); 98 } 99 100 void 101 asswarn(char *expr, char *file, int line) 102 { 103 xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d", 104 expr, file, line); 105 WARN_ON(1); 106 } 107 108 void 109 assfail(char *expr, char *file, int line) 110 { 111 xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d", 112 expr, file, line); 113 BUG(); 114 } 115 116 void 117 xfs_hex_dump(void *p, int length) 118 { 119 print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1); 120 } 121