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https://github.com/checkpoint-restore/criu
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8cfda2748c
As our pr_* functions are complex and can call different system calls inside before actual printing (e.g. gettimeofday for timestamps) actual errno at the time of printing may be changed. Let's just use %s + strerror(errno) instead of %m with pr_* functions to be explicit that errno to string transformation happens before calling anything else. Note: tcp_repair_off is called from pie with no pr_perror defined due to CR_NOGLIBC set and if I use errno variable there I get "Unexpected undefined symbol: `__errno_location'. External symbol in PIE?", so it seems there is no way to print errno there, so let's just skip it. Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
#ifndef COMPEL_LOG_H__
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#define COMPEL_LOG_H__
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#include <errno.h>
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#include <string.h>
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#include "uapi/compel/log.h"
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#ifndef LOG_PREFIX
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#define LOG_PREFIX
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#endif
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static inline int pr_quelled(unsigned int loglevel)
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{
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return compel_log_get_loglevel() < loglevel && loglevel != COMPEL_LOG_MSG;
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}
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extern void compel_print_on_level(unsigned int loglevel, const char *format, ...)
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__attribute__((__format__(__printf__, 2, 3)));
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#define pr_msg(fmt, ...) compel_print_on_level(COMPEL_LOG_MSG, fmt, ##__VA_ARGS__)
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#define pr_info(fmt, ...) compel_print_on_level(COMPEL_LOG_INFO, LOG_PREFIX fmt, ##__VA_ARGS__)
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#define pr_err(fmt, ...) \
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compel_print_on_level(COMPEL_LOG_ERROR, "Error (%s:%d): " LOG_PREFIX fmt, __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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compel_print_on_level(COMPEL_LOG_WARN, "Warn (%s:%d): " LOG_PREFIX fmt, __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, ...) compel_print_on_level(COMPEL_LOG_DEBUG, LOG_PREFIX fmt, ##__VA_ARGS__)
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#define pr_perror(fmt, ...) pr_err(fmt ": %s\n", ##__VA_ARGS__, strerror(errno))
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#endif /* COMPEL_LOG_H__ */
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