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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will 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 to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdarg.h>
#include <stdbool.h>
#include "common/messages.h"
#include "common/utils.h"
static const char *common_error_string[] = {
[ERROR_MSG_MEMORY] = "not enough memory",
[ERROR_MSG_START_TRANS] = "failed to start transaction",
[ERROR_MSG_COMMIT_TRANS] = "failed to commit transaction",
[ERROR_MSG_UNEXPECTED] = "unexpected condition, probably corruption",
[ERROR_MSG_READ] = "write() failed",
[ERROR_MSG_WRITE] = "read() failed",
};
__attribute__ ((format (printf, 1, 2)))
void __btrfs_printf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
#ifndef PV_WORKAROUND
static int va_modifier = -1;
static int print_va_format(FILE *stream, const struct printf_info *info,
const void *const *args)
{
const struct va_format *fmt;
if (!(info->user & va_modifier))
return -2;
fmt = *((const struct va_format **)(args[0]));
return vfprintf(stream, fmt->fmt, *(fmt->va));
}
static int print_va_format_arginfo(const struct printf_info *info,
size_t n, int *argtypes, int *size)
{
if (n > 0) {
argtypes[0] = PA_POINTER;
size[0] = sizeof(struct va_format *);
}
return 1;
}
#endif
__attribute__ ((format (printf, 2, 3)))
void btrfs_no_printk(const void *fs_info, const char *fmt, ...)
{
va_list args;
#ifndef PV_WORKAROUND
if (va_modifier == -1) {
register_printf_specifier('V', print_va_format,
print_va_format_arginfo);
va_modifier = register_printf_modifier(L"p");
}
#endif
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
fputc('\n', stderr);
}
static bool should_print(int level)
{
if (bconf.verbose == BTRFS_BCONF_QUIET || level == BTRFS_BCONF_QUIET)
return false;
if (bconf.verbose == BTRFS_BCONF_UNSET && level == LOG_DEFAULT)
return true;
if (bconf.verbose < level)
return false;
return true;
}
/*
* Print a message according to the global verbosity level.
*
* level: minimum verbose level at which the message will be printed
*/
__attribute__ ((format (printf, 2, 3)))
void pr_verbose(int level, const char *fmt, ...)
{
va_list args;
if (!should_print(level))
return;
va_start(args, fmt);
vfprintf(stdout, fmt, args);
va_end(args);
}
/* Print common error message with optional data, appended after the generic text */
__attribute__ ((format (printf, 2, 3)))
void error_msg(enum common_error error, const char *msg, ...)
{
const char *str = common_error_string[error];
if (msg) {
va_list args;
va_start(args, msg);
fprintf(stderr, PREFIX_ERROR "%s: ", str);
vfprintf(stderr, msg, args);
va_end(args);
fputc('\n', stderr);
} else {
fprintf(stderr, PREFIX_ERROR "%s\n", str);
}
}
/*
* Print a message according to the global verbosity level - to stderr.
*
* level: minimum verbose level at which the message will be printed
*/
__attribute__ ((format (printf, 2, 3)))
void pr_stderr(int level, const char *fmt, ...)
{
va_list args;
if (!should_print(level))
return;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
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