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-rw-r--r--common/cmd_nvedit.c33
-rw-r--r--common/env_dataflash.c2
-rw-r--r--common/env_eeprom.c2
-rw-r--r--common/env_flash.c4
-rw-r--r--common/env_mmc.c2
-rw-r--r--common/env_nand.c4
-rw-r--r--common/env_nvram.c2
-rw-r--r--common/env_onenand.c2
-rw-r--r--common/env_sf.c4
-rw-r--r--include/search.h3
-rw-r--r--lib/hashtable.c15
11 files changed, 47 insertions, 26 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 396a17135..7194ade80 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -125,7 +125,7 @@ static int env_print(char *name)
}
/* print whole list */
- len = hexport_r(&env_htab, '\n', &res, 0);
+ len = hexport_r(&env_htab, '\n', &res, 0, 0, NULL);
if (len > 0) {
puts(res);
@@ -647,7 +647,7 @@ static int do_env_delete(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
#ifdef CONFIG_CMD_EXPORTENV
/*
- * env export [-t | -b | -c] addr [size]
+ * env export [-t | -b | -c] [-s size] addr [var ...]
* -t: export as text format; if size is given, data will be
* padded with '\0' bytes; if not, one terminating '\0'
* will be added (which is included in the "filesize"
@@ -657,8 +657,12 @@ static int do_env_delete(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
* '\0', list end marked by double "\0\0")
* -c: export as checksum protected environment format as
* used for example by "saveenv" command
+ * -s size:
+ * size of output buffer
* addr: memory address where environment gets stored
- * size: size of output buffer
+ * var... List of variable names that get included into the
+ * export. Without arguments, the whole environment gets
+ * exported.
*
* With "-c" and size is NOT given, then the export command will
* format the data as currently used for the persistent storage,
@@ -691,7 +695,7 @@ static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
{
char buf[32];
char *addr, *cmd, *res;
- size_t size;
+ size_t size = 0;
ssize_t len;
env_t *envp;
char sep = '\n';
@@ -715,6 +719,11 @@ static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
sep = '\0';
chk = 1;
break;
+ case 's': /* size given */
+ if (--argc <= 0)
+ return cmd_usage(cmdtp);
+ size = simple_strtoul(*++argv, NULL, 16);
+ goto NXTARG;
case 't': /* text format */
if (fmt++)
goto sep_err;
@@ -724,6 +733,7 @@ static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
return cmd_usage(cmdtp);
}
}
+NXTARG: ;
}
if (argc < 1)
@@ -731,15 +741,14 @@ static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
addr = (char *)simple_strtoul(argv[0], NULL, 16);
- if (argc == 2) {
- size = simple_strtoul(argv[1], NULL, 16);
+ if (size)
memset(addr, '\0', size);
- } else {
- size = 0;
- }
+
+ argc--;
+ argv++;
if (sep) { /* export as text file */
- len = hexport_r(&env_htab, sep, &addr, size);
+ len = hexport_r(&env_htab, sep, &addr, size, argc, argv);
if (len < 0) {
error("Cannot export environment: errno = %d\n",
errno);
@@ -758,7 +767,7 @@ static int do_env_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
else /* export as raw binary data */
res = addr;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, argc, argv);
if (len < 0) {
error("Cannot export environment: errno = %d\n",
errno);
@@ -965,7 +974,7 @@ U_BOOT_CMD(
#if defined(CONFIG_CMD_EDITENV)
"env edit name - edit environment variable\n"
#endif
- "env export [-t | -b | -c] addr [size] - export environment\n"
+ "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
#if defined(CONFIG_CMD_GREPENV)
"env grep string [...] - search environment\n"
#endif
diff --git a/common/env_dataflash.c b/common/env_dataflash.c
index 1d5707902..0c4c676e1 100644
--- a/common/env_dataflash.c
+++ b/common/env_dataflash.c
@@ -68,7 +68,7 @@ int saveenv(void)
char *res;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_eeprom.c b/common/env_eeprom.c
index 0a179ad3d..1233b1aa3 100644
--- a/common/env_eeprom.c
+++ b/common/env_eeprom.c
@@ -143,7 +143,7 @@ int saveenv(void)
BUG_ON(env_ptr != NULL);
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_flash.c b/common/env_flash.c
index 50ca4ffa5..8e415d72d 100644
--- a/common/env_flash.c
+++ b/common/env_flash.c
@@ -155,7 +155,7 @@ int saveenv(void)
}
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
goto done;
@@ -289,7 +289,7 @@ int saveenv(void)
goto done;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
goto done;
diff --git a/common/env_mmc.c b/common/env_mmc.c
index 83f40f434..12d647a82 100644
--- a/common/env_mmc.c
+++ b/common/env_mmc.c
@@ -124,7 +124,7 @@ int saveenv(void)
return 1;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_nand.c b/common/env_nand.c
index 14446a6a5..da4d3b1df 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -200,7 +200,7 @@ int saveenv(void)
return 1;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
@@ -255,7 +255,7 @@ int saveenv(void)
return 1;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_nvram.c b/common/env_nvram.c
index 544ce4711..b108e6e76 100644
--- a/common/env_nvram.c
+++ b/common/env_nvram.c
@@ -94,7 +94,7 @@ int saveenv(void)
int rcode = 0;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_onenand.c b/common/env_onenand.c
index 5e04a06cf..414447594 100644
--- a/common/env_onenand.c
+++ b/common/env_onenand.c
@@ -109,7 +109,7 @@ int saveenv(void)
};
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_sf.c b/common/env_sf.c
index d3b36d010..a1ff297ba 100644
--- a/common/env_sf.c
+++ b/common/env_sf.c
@@ -91,7 +91,7 @@ int saveenv(void)
}
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
@@ -293,7 +293,7 @@ int saveenv(void)
}
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+ len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
goto done;
diff --git a/include/search.h b/include/search.h
index b4edd4310..ef53edb9f 100644
--- a/include/search.h
+++ b/include/search.h
@@ -91,7 +91,8 @@ extern int hstrstr_r(const char *__match, int __last_idx, ENTRY ** __retval,
extern int hdelete_r(const char *__key, struct hsearch_data *__htab);
extern ssize_t hexport_r(struct hsearch_data *__htab,
- const char __sep, char **__resp, size_t __size);
+ const char __sep, char **__resp, size_t __size,
+ int argc, char * const argv[]);
extern int himport_r(struct hsearch_data *__htab,
const char *__env, size_t __size, const char __sep,
diff --git a/lib/hashtable.c b/lib/hashtable.c
index 6895550d3..b7ba3414b 100644
--- a/lib/hashtable.c
+++ b/lib/hashtable.c
@@ -478,7 +478,8 @@ static int cmpkey(const void *p1, const void *p2)
}
ssize_t hexport_r(struct hsearch_data *htab, const char sep,
- char **resp, size_t size)
+ char **resp, size_t size,
+ int argc, char * const argv[])
{
ENTRY *list[htab->size];
char *res, *p;
@@ -502,6 +503,16 @@ ssize_t hexport_r(struct hsearch_data *htab, const char sep,
if (htab->table[i].used > 0) {
ENTRY *ep = &htab->table[i].entry;
+ int arg, found = 0;
+
+ for (arg = 0; arg < argc; ++arg) {
+ if (strcmp(argv[arg], ep->key) == 0) {
+ found = 1;
+ break;
+ }
+ }
+ if ((argc > 0) && (found == 0))
+ continue;
list[n++] = ep;
@@ -539,7 +550,7 @@ ssize_t hexport_r(struct hsearch_data *htab, const char sep,
/* Check if the user supplied buffer size is sufficient */
if (size) {
if (size < totlen + 1) { /* provided buffer too small */
- debug("### buffer too small: %d, but need %d\n",
+ printf("Env export buffer too small: %d, but need %d\n",
size, totlen + 1);
__set_errno(ENOMEM);
return (-1);
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 01:34:13 +0000