diff options
| -rw-r--r-- | tools/env/fw_env_main.c | 117 |
1 files changed, 75 insertions, 42 deletions
diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c index 39c8771..4bd4216 100644 --- a/tools/env/fw_env_main.c +++ b/tools/env/fw_env_main.c @@ -36,12 +36,16 @@ #include <unistd.h> #include "fw_env.h" -#define CMD_PRINTENV "fw_printenv" +#define CMD_PRINTENV "fw_printenv" #define CMD_SETENV "fw_setenv" +static int do_printenv; static struct option long_options[] = { - {"script", required_argument, NULL, 's'}, + {"aes", required_argument, NULL, 'a'}, + {"config", required_argument, NULL, 'c'}, {"help", no_argument, NULL, 'h'}, + {"script", required_argument, NULL, 's'}, + {"noheader", required_argument, NULL, 'n'}, {NULL, 0, NULL, 0} }; @@ -49,36 +53,58 @@ struct common_args common_args; struct printenv_args printenv_args; struct setenv_args setenv_args; -void usage(void) +void usage_printenv(void) { - fprintf(stderr, "fw_printenv/fw_setenv, " - "a command line interface to U-Boot environment\n\n" -#ifndef CONFIG_FILE - "usage:\tfw_printenv [-a key] [-n] [variable name]\n" - "\tfw_setenv [-a key] [variable name] [variable value]\n" -#else - "usage:\tfw_printenv [-c /my/fw_env.config] [-a key] [-n] [variable name]\n" - "\tfw_setenv [-c /my/fw_env.config] [-a key] [variable name] [variable value]\n" + fprintf(stderr, + "Usage: fw_printenv [OPTIONS]... [VARIABLE]...\n" + "Print variables from U-Boot environment\n" + "\n" + " -h, --help print this help.\n" +#ifdef CONFIG_ENV_AES + " -a, --aes aes key to access environment\n" #endif - "\tfw_setenv -s [ file ]\n" - "\tfw_setenv -s - < [ file ]\n\n" - "The file passed as argument contains only pairs " - "name / value\n" - "Example:\n" - "# Any line starting with # is treated as comment\n" +#ifdef CONFIG_FILE + " -c, --config configuration file, default:" CONFIG_FILE "\n" +#endif + " -n, --noheader do not repeat variable name in output\n" + "\n"); +} + +void usage_setenv(void) +{ + fprintf(stderr, + "Usage: fw_setenv [OPTIONS]... [VARIABLE]...\n" + "Modify variables in U-Boot environment\n" + "\n" + " -h, --help print this help.\n" +#ifdef CONFIG_ENV_AES + " -a, --aes aes key to access environment\n" +#endif +#ifdef CONFIG_FILE + " -c, --config configuration file, default:" CONFIG_FILE "\n" +#endif + " -s, --script batch mode to minimize writes\n" + "\n" + "Examples:\n" + " fw_setenv foo bar set variable foo equal bar\n" + " fw_setenv foo clear variable foo\n" + " fw_setenv --script file run batch script\n" "\n" - "\t netdev eth0\n" - "\t kernel_addr 400000\n" - "\t var1\n" - "\t var2 The quick brown fox jumps over the " - "lazy dog\n" + "Script Syntax:\n" + " key [space] value\n" + " lines starting with '#' are treated as commment\n" "\n" - "A variable without value will be dropped. It is possible\n" - "to put any number of spaces between the fields, but any\n" - "space inside the value is treated as part of the value " - "itself.\n\n" - ); + " A variable without value will be deleted. Any number of spaces are\n" + " allowed between key and value. Space inside of the value is treated\n" + " as part of the value itself.\n" + "\n" + "Script Example:\n" + " netdev eth0\n" + " kernel_addr 400000\n" + " foo empty empty empty empty empty empty\n" + " bar\n" + "\n"); } static void parse_common_args(int argc, char *argv[]) @@ -105,7 +131,7 @@ static void parse_common_args(int argc, char *argv[]) break; #endif case 'h': - usage(); + do_printenv ? usage_printenv() : usage_setenv(); exit(EXIT_SUCCESS); break; default: @@ -137,7 +163,7 @@ int parse_printenv_args(int argc, char *argv[]) /* ignore common options */ break; default: /* '?' */ - usage(); + usage_printenv(); exit(EXIT_FAILURE); break; } @@ -163,7 +189,7 @@ int parse_setenv_args(int argc, char *argv[]) /* ignore common options */ break; default: /* '?' */ - usage(); + usage_setenv(); exit(EXIT_FAILURE); break; } @@ -173,27 +199,34 @@ int parse_setenv_args(int argc, char *argv[]) int main(int argc, char *argv[]) { - char *cmdname = *argv; const char *lockname = "/var/lock/" CMD_PRINTENV ".lock"; int lockfd = -1; int retval = EXIT_SUCCESS; + char *_cmdname; - if (strrchr(cmdname, '/') != NULL) - cmdname = strrchr(cmdname, '/') + 1; + _cmdname = *argv; + if (strrchr(_cmdname, '/') != NULL) + _cmdname = strrchr(_cmdname, '/') + 1; - if (strcmp(cmdname, CMD_PRINTENV) == 0) { - if (parse_printenv_args(argc, argv)) - exit(EXIT_FAILURE); - } else if (strcmp(cmdname, CMD_SETENV) == 0) { - if (parse_setenv_args(argc, argv)) - exit(EXIT_FAILURE); + if (strcmp(_cmdname, CMD_PRINTENV) == 0) { + do_printenv = 1; + } else if (strcmp(_cmdname, CMD_SETENV) == 0) { + do_printenv = 0; } else { fprintf(stderr, "Identity crisis - may be called as `%s' or as `%s' but not as `%s'\n", - CMD_PRINTENV, CMD_SETENV, cmdname); + CMD_PRINTENV, CMD_SETENV, _cmdname); exit(EXIT_FAILURE); } + if (do_printenv) { + if (parse_printenv_args(argc, argv)) + exit(EXIT_FAILURE); + } else { + if (parse_setenv_args(argc, argv)) + exit(EXIT_FAILURE); + } + /* shift parsed flags, jump to non-option arguments */ argc -= optind; argv += optind; @@ -210,10 +243,10 @@ int main(int argc, char *argv[]) return EXIT_FAILURE; } - if (strcmp(cmdname, CMD_PRINTENV) == 0) { + if (do_printenv) { if (fw_printenv(argc, argv) != 0) retval = EXIT_FAILURE; - } else if (strcmp(cmdname, CMD_SETENV) == 0) { + } else { if (!setenv_args.script_file) { if (fw_setenv(argc, argv) != 0) retval = EXIT_FAILURE; |