summaryrefslogtreecommitdiff
path: root/lib/hashtable.c
diff options
context:
space:
mode:
authorWolfgang Denk <wd@denx.de>2011-11-06 22:49:44 +0100
committerWolfgang Denk <wd@denx.de>2011-11-08 13:20:42 +0100
commit37f2fe7472a34531e7d585eb7e0730b4f8e1f213 (patch)
treedf4a0306161ef740045c011f6847ed50fb47a120 /lib/hashtable.c
parent5721385b187b3154c7768e6c182501022f4e2e45 (diff)
downloadu-boot-imx-37f2fe7472a34531e7d585eb7e0730b4f8e1f213.zip
u-boot-imx-37f2fe7472a34531e7d585eb7e0730b4f8e1f213.tar.gz
u-boot-imx-37f2fe7472a34531e7d585eb7e0730b4f8e1f213.tar.bz2
env: allow to export only selected variables
New syntax: env export [-t | -b | -c] [-s size] addr [var ...] With this change it is possible to provide a list of variables names that shall be exported. Whenno arguments are given, the whole environment gets exported. NOTE: The new handling of the "size" argument means a change to the user API. Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'lib/hashtable.c')
-rw-r--r--lib/hashtable.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/hashtable.c b/lib/hashtable.c
index 6895550..b7ba341 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);