diff options
| -rw-r--r-- | cmd/nvedit.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/cmd/nvedit.c b/cmd/nvedit.c index 87c2a86..793b68b 100644 --- a/cmd/nvedit.c +++ b/cmd/nvedit.c @@ -1005,8 +1005,11 @@ sep_err: #ifdef CONFIG_CMD_IMPORTENV /* - * env import [-d] [-t [-r] | -b | -c] addr [size] - * -d: delete existing environment before importing; + * env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] + * -d: delete existing environment before importing if no var is + * passed; if vars are passed, if one var is in the current + * environment but not in the environment at addr, delete var from + * current environment; * otherwise overwrite / append to existing definitions * -t: assume text format; either "size" must be given or the * text data must be '\0' terminated @@ -1019,6 +1022,11 @@ sep_err: * addr: memory address to read from * size: length of input data; if missing, proper '\0' * termination is mandatory + * if var is set and size should be missing (i.e. '\0' + * termination), set size to '-' + * var... List of the names of the only variables that get imported from + * the environment at address 'addr'. Without arguments, the whole + * environment gets imported. */ static int do_env_import(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) @@ -1030,6 +1038,7 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, int fmt = 0; int del = 0; int crlf_is_lf = 0; + int wl = 0; size_t size; cmd = *argv; @@ -1078,9 +1087,9 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, addr = simple_strtoul(argv[0], NULL, 16); ptr = map_sysmem(addr, 0); - if (argc == 2) { + if (argc >= 2 && strcmp(argv[1], "-")) { size = simple_strtoul(argv[1], NULL, 16); - } else if (argc == 1 && chk) { + } else if (chk) { puts("## Error: external checksum format must pass size\n"); return CMD_RET_FAILURE; } else { @@ -1102,6 +1111,9 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, printf("## Info: input data size = %zu = 0x%zX\n", size, size); } + if (argc > 2) + wl = 1; + if (chk) { uint32_t crc; env_t *ep = (env_t *)ptr; @@ -1116,8 +1128,8 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, ptr = (char *)ep->data; } - if (himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR, - crlf_is_lf, 0, NULL) == 0) { + if (!himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR, + crlf_is_lf, wl ? argc - 2 : 0, wl ? &argv[2] : NULL)) { pr_err("## Error: Environment import failed: errno = %d\n", errno); return 1; @@ -1247,7 +1259,7 @@ static char env_help_text[] = #endif #endif #if defined(CONFIG_CMD_IMPORTENV) - "env import [-d] [-t [-r] | -b | -c] addr [size] - import environment\n" + "env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] - import environment\n" #endif "env print [-a | name ...] - print environment\n" #if defined(CONFIG_CMD_RUN) |