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log: Add a command to output a log record

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Add a 'log rec' command which allows a log record to be manually output.
This is useful for scripts which want full control over what is logged. It
also permits easy testing of the log system.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-12-28 13:14:20 -07:00
parent ad0e503991
commit 3fd24fa9ed
1 changed files with 40 additions and 1 deletions
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41
cmd/log.c
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@ -59,12 +59,49 @@ static int do_log_format(cmd_tbl_t *cmdtp, int flag, int argc,
return 0;
}
static int do_log_rec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
enum log_category_t cat;
enum log_level_t level;
const char *file;
uint line;
const char *func;
const char *msg;
char *end;
if (argc < 7)
return CMD_RET_USAGE;
cat = log_get_cat_by_name(argv[1]);
level = simple_strtoul(argv[2], &end, 10);
if (end == argv[2]) {
level = log_get_level_by_name(argv[2]);
if (level == LOGL_NONE) {
printf("Invalid log level '%s'\n", argv[2]);
return CMD_RET_USAGE;
}
}
if (level >= LOGL_MAX) {
printf("Invalid log level %u\n", level);
return CMD_RET_USAGE;
}
file = argv[3];
line = simple_strtoul(argv[4], NULL, 10);
func = argv[5];
msg = argv[6];
if (_log(cat, level, file, line, func, "%s\n", msg))
return CMD_RET_FAILURE;
return 0;
}
static cmd_tbl_t log_sub[] = {
U_BOOT_CMD_MKENT(level, CONFIG_SYS_MAXARGS, 1, do_log_level, "", ""),
#ifdef CONFIG_LOG_TEST
U_BOOT_CMD_MKENT(test, 2, 1, do_log_test, "", ""),
#endif
U_BOOT_CMD_MKENT(format, CONFIG_SYS_MAXARGS, 1, do_log_format, "", ""),
U_BOOT_CMD_MKENT(rec, CONFIG_SYS_MAXARGS, 1, do_log_rec, "", ""),
};
static int do_log(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
@ -94,7 +131,9 @@ static char log_help_text[] =
"log format <fmt> - set log output format. <fmt> is a string where\n"
"\teach letter indicates something that should be displayed:\n"
"\tc=category, l=level, F=file, L=line number, f=function, m=msg\n"
"\tor 'default', equivalent to 'fm', or 'all' for all"
"\tor 'default', equivalent to 'fm', or 'all' for all\n"
"log rec <category> <level> <file> <line> <func> <message> - "
"output a log record"
;
#endif