mirror of
https://github.com/checkpoint-restore/criu
synced 2025-08-22 09:58:09 +00:00
3f23bde548
"%m" can't be used to print strerror(errno), because print_on_level()
calls gettimeofday() which can overwrite errno.
For example:
13486 connect(4, {sa_family=AF_INET, sin_port=htons(8880), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 ENETUNREACH (Network is unreachable)
13486 gettimeofday({1423756664, 717423}, NULL) = 0
13486 open("/etc/localtime", O_RDONLY|O_CLOEXEC) = -1 EACCES (Permission denied)
13486 write(2, "15:57:44.717: 4: ERR: socket_udp.c:73: Can't connect (errno = 101 (Permission denied))\n", 91) = 91
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
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This file defines types and macros for CRIU plugins.
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Copyright (C) 2013 Parallels, Inc
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __CRIU_LOG_H__
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#define __CRIU_LOG_H__
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#ifndef CR_NOGLIBC
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#include <string.h>
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#include <errno.h>
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#endif /* CR_NOGLIBC */
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#define LOG_UNSET (-1)
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#define LOG_MSG (0) /* Print message regardless of log level */
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#define LOG_ERROR (1) /* Errors only, when we're in trouble */
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#define LOG_WARN (2) /* Warnings, dazen and confused but trying to continue */
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#define LOG_INFO (3) /* Informative, everything is fine */
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#define LOG_DEBUG (4) /* Debug only */
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extern void print_on_level(unsigned int loglevel, const char *format, ...)
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__attribute__ ((__format__ (__printf__, 2, 3)));
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#ifndef LOG_PREFIX
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# define LOG_PREFIX
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#endif
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#define pr_msg(fmt, ...) \
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print_on_level(LOG_MSG, \
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fmt, ##__VA_ARGS__)
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#define pr_info(fmt, ...) \
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print_on_level(LOG_INFO, \
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LOG_PREFIX fmt, ##__VA_ARGS__)
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#define pr_err(fmt, ...) \
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print_on_level(LOG_ERROR, \
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"Error (%s:%d): " LOG_PREFIX fmt, \
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__FILE__, __LINE__, ##__VA_ARGS__)
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#define pr_err_once(fmt, ...) \
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do { \
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static bool __printed; \
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if (!__printed) { \
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pr_err(fmt, ##__VA_ARGS__); \
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__printed = 1; \
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} \
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} while (0)
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#define pr_warn(fmt, ...) \
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print_on_level(LOG_WARN, \
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"Warn (%s:%d): " LOG_PREFIX fmt, \
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__FILE__, __LINE__, ##__VA_ARGS__)
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#define pr_warn_once(fmt, ...) \
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do { \
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static bool __printed; \
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if (!__printed) { \
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pr_warn(fmt, ##__VA_ARGS__); \
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__printed = 1; \
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} \
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} while (0)
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#define pr_debug(fmt, ...) \
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print_on_level(LOG_DEBUG, \
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LOG_PREFIX fmt, ##__VA_ARGS__)
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#ifndef CR_NOGLIBC
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#define pr_perror(fmt, ...) \
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pr_err(fmt ": %s\n", ##__VA_ARGS__, strerror(errno))
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#endif /* CR_NOGLIBC */
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#endif /* __CR_LOG_LEVELS_H__ */
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