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Linux/fs/xfs/xfs_message.c

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  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_format.h"
 21 #include "xfs_log_format.h"
 22 #include "xfs_trans_resv.h"
 23 #include "xfs_mount.h"
 24 
 25 /*
 26  * XFS logging functions
 27  */
 28 static void
 29 __xfs_printk(
 30         const char              *level,
 31         const struct xfs_mount  *mp,
 32         struct va_format        *vaf)
 33 {
 34         if (mp && mp->m_fsname) {
 35                 printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
 36                 return;
 37         }
 38         printk("%sXFS: %pV\n", level, vaf);
 39 }
 40 
 41 #define define_xfs_printk_level(func, kern_level)               \
 42 void func(const struct xfs_mount *mp, const char *fmt, ...)     \
 43 {                                                               \
 44         struct va_format        vaf;                            \
 45         va_list                 args;                           \
 46                                                                 \
 47         va_start(args, fmt);                                    \
 48                                                                 \
 49         vaf.fmt = fmt;                                          \
 50         vaf.va = &args;                                         \
 51                                                                 \
 52         __xfs_printk(kern_level, mp, &vaf);                     \
 53         va_end(args);                                           \
 54 }                                                               \
 55 
 56 define_xfs_printk_level(xfs_emerg, KERN_EMERG);
 57 define_xfs_printk_level(xfs_alert, KERN_ALERT);
 58 define_xfs_printk_level(xfs_crit, KERN_CRIT);
 59 define_xfs_printk_level(xfs_err, KERN_ERR);
 60 define_xfs_printk_level(xfs_warn, KERN_WARNING);
 61 define_xfs_printk_level(xfs_notice, KERN_NOTICE);
 62 define_xfs_printk_level(xfs_info, KERN_INFO);
 63 #ifdef DEBUG
 64 define_xfs_printk_level(xfs_debug, KERN_DEBUG);
 65 #endif
 66 
 67 void
 68 xfs_alert_tag(
 69         const struct xfs_mount  *mp,
 70         int                     panic_tag,
 71         const char              *fmt, ...)
 72 {
 73         struct va_format        vaf;
 74         va_list                 args;
 75         int                     do_panic = 0;
 76 
 77         if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
 78                 xfs_alert(mp, "Transforming an alert into a BUG.");
 79                 do_panic = 1;
 80         }
 81 
 82         va_start(args, fmt);
 83 
 84         vaf.fmt = fmt;
 85         vaf.va = &args;
 86 
 87         __xfs_printk(KERN_ALERT, mp, &vaf);
 88         va_end(args);
 89 
 90         BUG_ON(do_panic);
 91 }
 92 
 93 void
 94 asswarn(char *expr, char *file, int line)
 95 {
 96         xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
 97                 expr, file, line);
 98         WARN_ON(1);
 99 }
100 
101 void
102 assfail(char *expr, char *file, int line)
103 {
104         xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
105                 expr, file, line);
106         BUG();
107 }
108 
109 void
110 xfs_hex_dump(void *p, int length)
111 {
112         print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
113 }
114 

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