[U-Boot] [PATCH v5 06/20] env: Hide '.' variables in env print by default
Joe Hershberger
joe.hershberger at ni.com
Wed Dec 12 05:16:23 CET 2012
When printing all variables with env print, don't print variables that
begin with '.'. If env print is called with a '-a' switch, then
include variables that begin with '.' (just like the ls command).
Variables printed explicitly will be printed even without the -a.
Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>
---
Changes in v5: None
Changes in v4:
- Fixed help text
Changes in v3: None
Changes in v2: None
board/esd/pmc440/cmd_pmc440.c | 2 +-
common/cmd_nvedit.c | 26 +++++++++++++++++---------
common/env_dataflash.c | 2 +-
common/env_eeprom.c | 2 +-
common/env_fat.c | 2 +-
common/env_flash.c | 4 ++--
common/env_mmc.c | 2 +-
common/env_nand.c | 4 ++--
common/env_nvram.c | 2 +-
common/env_onenand.c | 2 +-
common/env_sf.c | 4 ++--
include/search.h | 5 +++--
lib/hashtable.c | 5 ++++-
13 files changed, 37 insertions(+), 25 deletions(-)
diff --git a/board/esd/pmc440/cmd_pmc440.c b/board/esd/pmc440/cmd_pmc440.c
index f1ffb7b..e9a78a3 100644
--- a/board/esd/pmc440/cmd_pmc440.c
+++ b/board/esd/pmc440/cmd_pmc440.c
@@ -391,7 +391,7 @@ int do_painit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
nextbase -= ((CONFIG_ENV_SIZE + 4096 - 1) & ~(4096 - 1));
envp = (env_t *)nextbase;
res = (char *)envp->data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index da5689c..022ad39 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -106,7 +106,7 @@ int get_env_id(void)
*
* Returns 0 in case of error, or length of printed string
*/
-static int env_print(char *name)
+static int env_print(char *name, int flag)
{
char *res = NULL;
size_t len;
@@ -116,7 +116,7 @@ static int env_print(char *name)
e.key = name;
e.data = NULL;
- hsearch_r(e, FIND, &ep, &env_htab, 0);
+ hsearch_r(e, FIND, &ep, &env_htab, flag);
if (ep == NULL)
return 0;
len = printf("%s=%s\n", ep->key, ep->data);
@@ -124,7 +124,7 @@ static int env_print(char *name)
}
/* print whole list */
- len = hexport_r(&env_htab, '\n', &res, 0, 0, NULL);
+ len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL);
if (len > 0) {
puts(res);
@@ -141,10 +141,17 @@ static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
{
int i;
int rcode = 0;
+ int env_flag = H_HIDE_DOT;
+
+ if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') {
+ argc--;
+ argv++;
+ env_flag &= ~H_HIDE_DOT;
+ }
if (argc == 1) {
/* print all env vars */
- rcode = env_print(NULL);
+ rcode = env_print(NULL, env_flag);
if (!rcode)
return 1;
printf("\nEnvironment size: %d/%ld bytes\n",
@@ -153,8 +160,9 @@ static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
}
/* print selected env vars */
+ env_flag &= ~H_HIDE_DOT;
for (i = 1; i < argc; ++i) {
- int rc = env_print(argv[i]);
+ int rc = env_print(argv[i], env_flag);
if (!rc) {
printf("## Error: \"%s\" not defined\n", argv[i]);
++rcode;
@@ -807,7 +815,7 @@ NXTARG: ;
argv++;
if (sep) { /* export as text file */
- len = hexport_r(&env_htab, sep, &addr, size, argc, argv);
+ len = hexport_r(&env_htab, sep, 0, &addr, size, argc, argv);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
@@ -825,7 +833,7 @@ NXTARG: ;
else /* export as raw binary data */
res = addr;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, argc, argv);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, argc, argv);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
@@ -1037,7 +1045,7 @@ static char env_help_text[] =
#if defined(CONFIG_CMD_IMPORTENV)
"env import [-d] [-t | -b | -c] addr [size] - import environment\n"
#endif
- "env print [name ...] - print environment\n"
+ "env print [-a | name ...] - print environment\n"
#if defined(CONFIG_CMD_RUN)
"env run var [...] - run commands in an environment variable\n"
#endif
@@ -1069,7 +1077,7 @@ U_BOOT_CMD_COMPLETE(
U_BOOT_CMD_COMPLETE(
printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
"print environment variables",
- "\n - print values of all environment variables\n"
+ "[-a]\n - print [all] values of all environment variables\n"
"printenv name ...\n"
" - print value of environment variable 'name'",
var_complete
diff --git a/common/env_dataflash.c b/common/env_dataflash.c
index 3c5af37..38c9615 100644
--- a/common/env_dataflash.c
+++ b/common/env_dataflash.c
@@ -60,7 +60,7 @@ int saveenv(void)
char *res;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 b66bba2..45c935b 100644
--- a/common/env_eeprom.c
+++ b/common/env_eeprom.c
@@ -139,7 +139,7 @@ int saveenv(void)
BUG_ON(env_ptr != NULL);
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
diff --git a/common/env_fat.c b/common/env_fat.c
index 6ef5318..c0f18ab 100644
--- a/common/env_fat.c
+++ b/common/env_fat.c
@@ -61,7 +61,7 @@ int saveenv(void)
int err;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 aa970d4..e07d336 100644
--- a/common/env_flash.c
+++ b/common/env_flash.c
@@ -142,7 +142,7 @@ int saveenv(void)
goto done;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
goto done;
@@ -275,7 +275,7 @@ int saveenv(void)
goto done;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 a2ff90b..ce21671 100644
--- a/common/env_mmc.c
+++ b/common/env_mmc.c
@@ -130,7 +130,7 @@ int saveenv(void)
}
res = (char *)&env_new->data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
ret = 1;
diff --git a/common/env_nand.c b/common/env_nand.c
index 79e8033..22e72a2 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -186,7 +186,7 @@ int saveenv(void)
return 1;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
@@ -239,7 +239,7 @@ int saveenv(void)
return 1;
res = (char *)&env_new->data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 6483db3..eab0e7b 100644
--- a/common/env_nvram.c
+++ b/common/env_nvram.c
@@ -90,7 +90,7 @@ int saveenv(void)
int rcode = 0;
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 da35071..faa903d 100644
--- a/common/env_onenand.c
+++ b/common/env_onenand.c
@@ -95,7 +95,7 @@ int saveenv(void)
};
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 bbd472f..d9e9085 100644
--- a/common/env_sf.c
+++ b/common/env_sf.c
@@ -79,7 +79,7 @@ int saveenv(void)
}
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
if (len < 0) {
error("Cannot export environment: errno = %d\n", errno);
return 1;
@@ -277,7 +277,7 @@ int saveenv(void)
}
res = (char *)&env_new.data;
- len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
+ len = hexport_r(&env_htab, '\0', 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 fa00ea1..1e48deb 100644
--- a/include/search.h
+++ b/include/search.h
@@ -107,7 +107,7 @@ extern int hdelete_r(const char *__key, struct hsearch_data *__htab,
int __flag);
extern ssize_t hexport_r(struct hsearch_data *__htab,
- const char __sep, char **__resp, size_t __size,
+ const char __sep, int __flag, char **__resp, size_t __size,
int argc, char * const argv[]);
/*
@@ -120,9 +120,10 @@ extern int himport_r(struct hsearch_data *__htab,
const char *__env, size_t __size, const char __sep,
int __flag, int nvars, char * const vars[]);
-/* Flags for himport_r(), hdelete_r(), and hsearch_r() */
+/* Flags for himport_r(), hexport_r(), hdelete_r(), and hsearch_r() */
#define H_NOCLEAR (1 << 0) /* do not clear hash table before importing */
#define H_FORCE (1 << 1) /* overwrite read-only/write-once variables */
#define H_INTERACTIVE (1 << 2) /* indicate that an import is user directed */
+#define H_HIDE_DOT (1 << 3) /* don't print env vars that begin with '.' */
#endif /* search.h */
diff --git a/lib/hashtable.c b/lib/hashtable.c
index 6861a42..7c6b96c 100644
--- a/lib/hashtable.c
+++ b/lib/hashtable.c
@@ -522,7 +522,7 @@ static int cmpkey(const void *p1, const void *p2)
return (strcmp(e1->key, e2->key));
}
-ssize_t hexport_r(struct hsearch_data *htab, const char sep,
+ssize_t hexport_r(struct hsearch_data *htab, const char sep, int flag,
char **resp, size_t size,
int argc, char * const argv[])
{
@@ -559,6 +559,9 @@ ssize_t hexport_r(struct hsearch_data *htab, const char sep,
if ((argc > 0) && (found == 0))
continue;
+ if ((flag & H_HIDE_DOT) && ep->key[0] == '.')
+ continue;
+
list[n++] = ep;
totlen += strlen(ep->key) + 2;
--
1.7.11.5
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