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* console: fix out-of-bounds read in dputc(/dev/*, ...)Ahmad Fatoum2019-09-021-7/+5
| | | | | | | | | | | | | | | | | | Trying to output a single character via echo -a /dev/serial0-1 currently results in garbage output after the newline, because console.c's fops_write discards the buffer length and passes the buffer to (struct cdev)::puts which only handles NUL-terminated strings. Fix this by amending (struct cdev)::puts with a new nbytes parameter, which is correctly propagated. All this functions now return at most the nbytes parameter they were passed in. This fixes __console_puts, which used to count new lines twice in its return value. Fixes: b4f55fcf35 ("console: expose consoles in devfs") Cc: Bastian Krause <bst@pengutronix.de> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: fix compile warningsOleksij Rempel2018-10-231-1/+1
| | | | | Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: use xstrndup() instead of a custom xmemdup_add_zero()Aleksander Morgado2018-03-011-12/+1
| | | | | | | | The console operations done via RATP expect strings, so just use xstrndup() instead of defining a custom method. Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: implement getenv as a standard ratp commandAleksander Morgado2018-03-011-30/+0
| | | | | | | | Also, use xstrndup() instead of the custom xmemdup_add_zero() as we're working with strings anyway. Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: implement ping as a standard ratp commandAleksander Morgado2018-03-011-24/+0
| | | | | Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: allow building without full console supportAleksander Morgado2018-03-011-2/+5
| | | | | | | | | | | | | Make CONFIG_RATP a selectable config option, so that the user can enable RATP support without explicitly needing to enable the full console support over RATP (e.g. only for RATP FS or built-in command support). The full console can still be explicitly enabled with CONFIG_CONSOLE_RATP. Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: moved logic to its own subdirectoryAleksander Morgado2018-03-011-0/+544
We are going to add new RATP command implementations in separate files within this subdirectory. Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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