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canerrsim: err_exit(): add support for printf style formats

pull/624/head
Marc Kleine-Budde 2026-03-09 12:18:03 +01:00
parent 1520ab5b98
commit 3fe1c42bbf
1 changed files with 9 additions and 3 deletions
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12
canerrsim.c
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@ -25,6 +25,7 @@
#include <linux/can/error.h> #include <linux/can/error.h>
#include <linux/can/raw.h> #include <linux/can/raw.h>
#include <net/if.h> #include <net/if.h>
#include <stdarg.h>
#include <stdbool.h> #include <stdbool.h>
#include <stdint.h> #include <stdint.h>
#include <stdio.h> #include <stdio.h>
@ -122,9 +123,14 @@ void show_help_and_exit()
exit(EXIT_SUCCESS); exit(EXIT_SUCCESS);
} }
void err_exit(const char *msg) void __attribute__((format (printf, 1, 2))) err_exit(const char *format, ...)
{ {
printf("%s", msg); va_list ap;
va_start(ap, format);
vfprintf(stdout, format, ap);
va_end(ap);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
@ -132,7 +138,7 @@ void show_custom_format_and_exit(const char *param, const char *format)
{ {
char str_buf[80]; char str_buf[80];
sprintf(str_buf, format, param); sprintf(str_buf, format, param);
err_exit(str_buf); err_exit("%s", str_buf);
} }
void show_invalid_option(const char *option) void show_invalid_option(const char *option)