mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
synced 2024-11-15 08:14:21 +08:00
152 lines
3.5 KiB
C
152 lines
3.5 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include "common/messages.h"
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#include "common/utils.h"
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static const char *common_error_string[] = {
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[ERROR_MSG_MEMORY] = "not enough memory",
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[ERROR_MSG_START_TRANS] = "failed to start transaction",
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[ERROR_MSG_COMMIT_TRANS] = "failed to commit transaction",
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};
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__attribute__ ((format (printf, 1, 2)))
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void __btrfs_printf(const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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va_end(args);
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}
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#ifndef PV_WORKAROUND
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static int va_modifier = -1;
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static int print_va_format(FILE *stream, const struct printf_info *info,
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const void *const *args)
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{
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const struct va_format *fmt;
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if (!(info->user & va_modifier))
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return -2;
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fmt = *((const struct va_format **)(args[0]));
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return vfprintf(stream, fmt->fmt, *(fmt->va));
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}
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static int print_va_format_arginfo(const struct printf_info *info,
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size_t n, int *argtypes, int *size)
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{
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if (n > 0) {
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argtypes[0] = PA_POINTER;
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size[0] = sizeof(struct va_format *);
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}
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return 1;
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}
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#endif
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__attribute__ ((format (printf, 2, 3)))
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void btrfs_no_printk(const void *fs_info, const char *fmt, ...)
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{
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va_list args;
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#ifndef PV_WORKAROUND
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if (va_modifier == -1) {
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register_printf_specifier('V', print_va_format,
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print_va_format_arginfo);
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va_modifier = register_printf_modifier(L"p");
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}
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#endif
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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va_end(args);
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fputc('\n', stderr);
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}
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static bool should_print(int level)
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{
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if (bconf.verbose == BTRFS_BCONF_QUIET || level == BTRFS_BCONF_QUIET)
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return false;
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if (bconf.verbose == BTRFS_BCONF_UNSET && level == LOG_DEFAULT)
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return true;
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if (bconf.verbose < level)
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return false;
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return true;
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}
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/*
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* Print a message according to the global verbosity level.
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*
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* level: minimum verbose level at which the message will be printed
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*/
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__attribute__ ((format (printf, 2, 3)))
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void pr_verbose(int level, const char *fmt, ...)
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{
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va_list args;
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if (!should_print(level))
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return;
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va_start(args, fmt);
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vfprintf(stdout, fmt, args);
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va_end(args);
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}
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/* Print common error message with optional data, appended after the generic text */
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__attribute__ ((format (printf, 2, 3)))
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void error_msg(enum common_error error, const char *msg, ...)
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{
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const char *str = common_error_string[error];
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if (msg) {
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va_list args;
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va_start(args, msg);
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fprintf(stderr, PREFIX_ERROR "%s: ", str);
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vfprintf(stderr, msg, args);
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va_end(args);
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fputc('\n', stderr);
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} else {
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fprintf(stderr, PREFIX_ERROR "%s\n", str);
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}
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}
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/*
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* Print a message according to the global verbosity level - to stderr.
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*
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* level: minimum verbose level at which the message will be printed
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*/
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__attribute__ ((format (printf, 2, 3)))
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void pr_stderr(int level, const char *fmt, ...)
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{
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va_list args;
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if (!should_print(level))
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return;
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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va_end(args);
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}
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