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flow: Add flow_perror() helper

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Our general logging helpers include a number of _perror() variants which,
like perror(3) include the description of the current errno.  We didn't
have those for our flow specific logging helpers, though.  Fill this gap
with flow_perror() and flow_dbg_perror(), and use them where it's useful.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2025-02-18 19:59:24 +11:00 • committed by Stefano Brivio
commit adb46c11d0
6 changed files with 49 additions and 47 deletions

18
flow.h
View file

@ -258,11 +258,11 @@ int flow_migrate_source(struct ctx *c, const struct migrate_stage *stage,
int flow_migrate_target(struct ctx *c, const struct migrate_stage *stage,
int fd);
void flow_log_(const struct flow_common *f, int pri, const char *fmt, ...)
__attribute__((format(printf, 3, 4)));
#define flow_log(f_, pri, ...) flow_log_(&(f_)->f, (pri), __VA_ARGS__)
void flow_log_(const struct flow_common *f, bool newline, int pri,
const char *fmt, ...)
__attribute__((format(printf, 4, 5)));
#define flow_log(f_, pri, ...) flow_log_(&(f_)->f, true, (pri), __VA_ARGS__)
#define flow_dbg(f, ...) flow_log((f), LOG_DEBUG, __VA_ARGS__)
#define flow_err(f, ...) flow_log((f), LOG_ERR, __VA_ARGS__)
@ -272,6 +272,16 @@ void flow_log_(const struct flow_common *f, int pri, const char *fmt, ...)
flow_dbg((f), __VA_ARGS__); \
} while (0)
#define flow_log_perror_(f, pri, ...) \
do { \
int errno_ = errno; \
flow_log_((f), false, (pri), __VA_ARGS__); \
logmsg(true, true, (pri), ": %s", strerror_(errno_)); \
} while (0)
#define flow_dbg_perror(f_, ...) flow_log_perror_(&(f_)->f, LOG_DEBUG, __VA_ARGS__)
#define flow_perror(f_, ...) flow_log_perror_(&(f_)->f, LOG_ERR, __VA_ARGS__)
void flow_log_details_(const struct flow_common *f, int pri,
enum flow_state state);
#define flow_log_details(f_, pri) \