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Fix kenv behavior when there is no static environment

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In case where there are no static kernel environment entries, the
function init_dynamic_kenv() adds an incorrect entry at position 0 of
the dynamic kernel environment. This in turn causes kenv(1) to print
and empty list even though there are dynamic entries added later.

Fix this by checking env_pos in init_dynamic_kenv() and adding dynamic
entries only if there are static entries.
This commit is contained in:
jchandra 2013-04-12 15:58:53 +00:00
parent 8b20292658
commit b9f386539e
1 changed files with 16 additions and 13 deletions
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29
sys/kern/kern_environment.c
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@ -231,20 +231,23 @@ init_dynamic_kenv(void *data __unused)
kenvp = malloc((KENV_SIZE + 1) * sizeof(char *), M_KENV,
M_WAITOK | M_ZERO);
i = 0;
for (cp = kern_envp; cp != NULL; cp = kernenv_next(cp)) {
len = strlen(cp) + 1;
if (len > KENV_MNAMELEN + 1 + KENV_MVALLEN + 1) {
printf("WARNING: too long kenv string, ignoring %s\n",
cp);
continue;
if (env_pos > 0) {
for (cp = kern_envp; cp != NULL; cp = kernenv_next(cp)) {
len = strlen(cp) + 1;
if (len > KENV_MNAMELEN + 1 + KENV_MVALLEN + 1) {
printf(
"WARNING: too long kenv string, ignoring %s\n",
cp);
continue;
}
if (i < KENV_SIZE) {
kenvp[i] = malloc(len, M_KENV, M_WAITOK);
strcpy(kenvp[i++], cp);
} else
printf(
"WARNING: too many kenv strings, ignoring %s\n",
cp);
}
if (i < KENV_SIZE) {
kenvp[i] = malloc(len, M_KENV, M_WAITOK);
strcpy(kenvp[i++], cp);
} else
printf(
"WARNING: too many kenv strings, ignoring %s\n",
cp);
}
kenvp[i] = NULL;