From bc11756daff89a3de09ca80adac962b88cf06e6e Mon Sep 17 00:00:00 2001 From: Grant Erickson Date: Tue, 6 May 2008 20:16:15 -0700 Subject: Propagate Error Status to the Shell on fw_printenv Errors Changed implementation such that fw_printenv returns failure status when one or more specified variables do not exist or when incorrect command syntax is used. This aids scripting fw_printenv such that the script can key of the return status rather than relying on standard error "scraping". Signed-off-by: Grant Erickson Signed-off-by: Wolfgang Denk --- tools/env/fw_env_main.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) (limited to 'tools/env/fw_env_main.c') diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c index 696e30efda..7f631c4494 100644 --- a/tools/env/fw_env_main.c +++ b/tools/env/fw_env_main.c @@ -1,5 +1,5 @@ /* - * (C) Copyright 2000 + * (C) Copyright 2000-2008 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this @@ -25,15 +25,16 @@ * Command line user interface to firmware (=U-Boot) environment. * * Implements: - * fw_printenv [ name ... ] - * - prints the values of the environment variables - * "name", or the whole environment if no names are - * specified + * fw_printenv [[ -n name ] | [ name ... ]] + * - prints the value of a single environment variable + * "name", the ``name=value'' pairs of one or more + * environment variables "name", or the whole + * environment if no names are specified. * fw_setenv name [ value ... ] * - If a name without any values is given, the variable * with this name is deleted from the environment; * otherwise, all "value" arguments are concatenated, - * separated by sinlge blank characters, and the + * separated by single blank characters, and the * resulting string is assigned to the environment * variable "name" */ @@ -58,16 +59,18 @@ main(int argc, char *argv[]) if (strcmp(cmdname, CMD_PRINTENV) == 0) { - fw_printenv (argc, argv); + if (fw_printenv (argc, argv) != 0) + return (EXIT_FAILURE); - return (EXIT_SUCCESS); + return (EXIT_SUCCESS); } else if (strcmp(cmdname, CMD_SETENV) == 0) { - if (fw_setenv (argc, argv) != 0) - return (EXIT_FAILURE); + if (fw_setenv (argc, argv) != 0) + return (EXIT_FAILURE); + + return (EXIT_SUCCESS); - return (EXIT_SUCCESS); } fprintf (stderr, -- cgit v1.2.1