xfs_message.c

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/*
 * Copyright (c) 2011 Red Hat, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_types.h"
#include "xfs_log.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_mount.h"

/*
 * XFS logging functions
 */
static void
__xfs_printk(
    const char      *level,
    const struct xfs_mount  *mp,
    struct va_format    *vaf)
{
    if (mp && mp->m_fsname) {
        printk("%sXFS (%s): %pV\n", level, mp->m_fsname, vaf);
        return;
    }
    printk("%sXFS: %pV\n", level, vaf);
}

#define define_xfs_printk_level(func, kern_level)       \
void func(const struct xfs_mount *mp, const char *fmt, ...) \
{                               \
    struct va_format    vaf;                \
    va_list         args;               \
                                \
    va_start(args, fmt);                    \
                                \
    vaf.fmt = fmt;                      \
    vaf.va = &args;                     \
                                \
    __xfs_printk(kern_level, mp, &vaf);         \
    va_end(args);                       \
}                               \

define_xfs_printk_level(xfs_emerg, KERN_EMERG);
define_xfs_printk_level(xfs_alert, KERN_ALERT);
define_xfs_printk_level(xfs_crit, KERN_CRIT);
define_xfs_printk_level(xfs_err, KERN_ERR);
define_xfs_printk_level(xfs_warn, KERN_WARNING);
define_xfs_printk_level(xfs_notice, KERN_NOTICE);
define_xfs_printk_level(xfs_info, KERN_INFO);
#ifdef DEBUG
define_xfs_printk_level(xfs_debug, KERN_DEBUG);
#endif

void
xfs_alert_tag(
    const struct xfs_mount  *mp,
    int         panic_tag,
    const char      *fmt, ...)
{
    struct va_format    vaf;
    va_list         args;
    int         do_panic = 0;

    if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
        xfs_alert(mp, "Transforming an alert into a BUG.");
        do_panic = 1;
    }

    va_start(args, fmt);

    vaf.fmt = fmt;
    vaf.va = &args;

    __xfs_printk(KERN_ALERT, mp, &vaf);
    va_end(args);

    BUG_ON(do_panic);
}

void
assfail(char *expr, char *file, int line)
{
    xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",
        expr, file, line);
    BUG();
}

void
xfs_hex_dump(void *p, int length)
{
    print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
}