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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2021-05-03 13:48:47 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-05-03 13:55:29 +0200 |
| commit | 7a1ae4f032053ed1c2acbfc7b5cf59aa1539e61e (patch) | |
| tree | 2fea86ef4cbc098b27a9d2bb778676af7a199145 | |
| parent | 0394fe51b489028388063ed6f238dab3efbd1ae7 (diff) | |
| download | barebox-7a1ae4f032053ed1c2acbfc7b5cf59aa1539e61e.tar.gz barebox-7a1ae4f032053ed1c2acbfc7b5cf59aa1539e61e.tar.xz | |
common: console: add log_writefile to write log into new file
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.
Add a function to facilitate this.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210503114901.13095-3-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | common/console_common.c | 20 | ||||
| -rw-r--r-- | include/printk.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/common/console_common.c b/common/console_common.c index 4c1230464c..aa9e943ef0 100644 --- a/common/console_common.c +++ b/common/console_common.c @@ -182,6 +182,26 @@ static int console_common_init(void) } device_initcall(console_common_init); +int log_writefile(const char *filepath) +{ + int ret = 0, nbytes = 0, fd = -1; + struct log_entry *log; + + fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC); + if (fd < 0) + return -errno; + + list_for_each_entry(log, &barebox_logbuf, list) { + ret = dputs(fd, log->msg); + if (ret < 0) + break; + nbytes += ret; + } + + close(fd); + return ret < 0 ? ret : nbytes; +} + void log_print(unsigned flags, unsigned levels) { struct log_entry *log; diff --git a/include/printk.h b/include/printk.h index 94a25ec9eb..f83ad3bf07 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_writefile(const char *filepath); void log_print(unsigned flags, unsigned levels); struct va_format { |