From 884eeea4082b36e8cca56f2886947d934bf40238 Mon Sep 17 00:00:00 2001 From: Aleksander Morgado Date: Sat, 24 Feb 2018 16:01:17 +0100 Subject: ratp: implement getenv as a standard ratp command Also, use xstrndup() instead of the custom xmemdup_add_zero() as we're working with strings anyway. Signed-off-by: Aleksander Morgado Signed-off-by: Sascha Hauer --- common/ratp/Makefile | 1 + common/ratp/getenv.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ common/ratp/ratp.c | 30 ------------------------------ 3 files changed, 52 insertions(+), 30 deletions(-) create mode 100644 common/ratp/getenv.c (limited to 'common') diff --git a/common/ratp/Makefile b/common/ratp/Makefile index acad61ee58..2fa9d63c02 100644 --- a/common/ratp/Makefile +++ b/common/ratp/Makefile @@ -1,2 +1,3 @@ obj-y += ratp.o obj-y += ping.o +obj-y += getenv.o diff --git a/common/ratp/getenv.c b/common/ratp/getenv.c new file mode 100644 index 0000000000..b409634886 --- /dev/null +++ b/common/ratp/getenv.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2018 Sascha Hauer , Pengutronix + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +/* + * RATP getenv + */ + +#include +#include +#include +#include + +static int ratp_cmd_getenv(const struct ratp_bb *req, int req_len, + struct ratp_bb **rsp, int *rsp_len) +{ + int dlen = req_len - sizeof (struct ratp_bb); + char *varname; + const char *value; + + varname = xstrndup ((const char *)req->data, dlen); + value = getenv (varname); + free (varname); + + dlen = strlen (value); + + *rsp_len = sizeof(struct ratp_bb) + dlen; + *rsp = xzalloc(*rsp_len); + (*rsp)->type = cpu_to_be16(BB_RATP_TYPE_GETENV_RETURN); + memcpy ((*rsp)->data, value, dlen); + return 0; +} + +BAREBOX_RATP_CMD_START(GETENV) + .request_id = BB_RATP_TYPE_GETENV, + .response_id = BB_RATP_TYPE_GETENV_RETURN, + .cmd = ratp_cmd_getenv +BAREBOX_RATP_CMD_END diff --git a/common/ratp/ratp.c b/common/ratp/ratp.c index 965c67a0a1..1e9c65179f 100644 --- a/common/ratp/ratp.c +++ b/common/ratp/ratp.c @@ -189,29 +189,6 @@ static int ratp_bb_send_command_return(struct ratp_ctx *ctx, uint32_t errno) return ret; } -static int ratp_bb_send_getenv_return(struct ratp_ctx *ctx, const char *val) -{ - void *buf; - struct ratp_bb *rbb; - int len, ret; - - if (!val) - val = ""; - - len = sizeof(*rbb) + strlen(val); - buf = xzalloc(len); - rbb = buf; - strcpy(rbb->data, val); - - rbb->type = cpu_to_be16(BB_RATP_TYPE_GETENV_RETURN); - - ret = ratp_send(&ctx->ratp, buf, len); - - free(buf); - - return ret; -} - static char *ratp_command; static struct ratp_ctx *ratp_ctx; @@ -220,7 +197,6 @@ static int ratp_bb_dispatch(struct ratp_ctx *ctx, const void *buf, int len) const struct ratp_bb *rbb = buf; struct ratp_bb_pkt *pkt; int dlen = len - sizeof(struct ratp_bb); - char *varname; int ret = 0; uint16_t type = be16_to_cpu(rbb->type); struct ratp_command *cmd; @@ -260,12 +236,6 @@ static int ratp_bb_dispatch(struct ratp_ctx *ctx, const void *buf, int len) kfifo_put(ctx->console_recv_fifo, rbb->data, dlen); break; - case BB_RATP_TYPE_GETENV: - varname = xmemdup_add_zero(&rbb->data, dlen); - - ret = ratp_bb_send_getenv_return(ctx, getenv(varname)); - break; - case BB_RATP_TYPE_FS_RETURN: pkt = xzalloc(sizeof(*pkt) + dlen); pkt->len = dlen; -- cgit v1.2.3