On Tue, Apr 13, 2021 at 12:34:50AM +0200, Ahmad Fatoum wrote:
> It can be useful to dump the log into the file, e.g. when doing an
> update from a USB flash drive with no serial peer attached. Board code
> could use log_dprint to dump the log onto the drive. Add a function
> to facilitate this.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> common/console_common.c | 15 +++++++++++++++
> include/printk.h | 1 +
> 2 files changed, 16 insertions(+)
>
> diff --git a/common/console_common.c b/common/console_common.c
> index 3e0741572398..77ad4728fbfd 100644
> --- a/common/console_common.c
> +++ b/common/console_common.c
> @@ -182,6 +182,21 @@ static int console_common_init(void)
> }
> device_initcall(console_common_init);
>
> +int log_dprint(int fd)
This function isn't used anywhere in this series, I would prefer to
merge it along with a user.
Is printing to an opened filedescriptor the most useful semantics of
this function? This only seems to make sense when other things should be
written to the file as well, otherwise I would assume to pass a path to
this function which then handles open/close also.
Sascha
> +{
> + struct log_entry *log;
> + int nbytes = 0;
> +
> + list_for_each_entry(log, &barebox_logbuf, list) {
> + int ret = dputs(fd, log->msg);
> + if (ret < 0)
> + return ret;
> + nbytes += ret;
> + }
> +
> + return nbytes;
> +}
> +
> void log_print(unsigned flags, unsigned levels)
> {
> struct log_entry *log;
> diff --git a/include/printk.h b/include/printk.h
> index 94a25ec9ebac..798acfdbf188 100644
> --- a/include/printk.h
> +++ b/include/printk.h
> @@ -141,6 +141,7 @@ extern void log_clean(unsigned int limit);
> #define BAREBOX_LOG_PRINT_ALERT BIT(1)
> #define BAREBOX_LOG_PRINT_EMERG BIT(0)
>
> +int log_dprint(int fd);
> void log_print(unsigned flags, unsigned levels);
>
> struct va_format {
> --
> 2.29.2
>
>
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