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lib/hashtable.c: create helper for calling env_entry::callback

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This is preparation for compiling out the "call the callback" code and
associated error handling for SPL, where ->callback is always NULL.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Rasmus Villemoes 2020-02-27 13:56:11 +00:00 committed by Tom Rini
parent e13df08a26
commit 7f529f6585
1 changed files with 15 additions and 8 deletions
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23
lib/hashtable.c
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@ -222,6 +222,15 @@ int hmatch_r(const char *match, int last_idx, struct env_entry **retval,
return 0;
}
static int
do_callback(const struct env_entry *e, const char *name, const char *value,
enum env_op op, int flags)
{
if (e->callback)
return e->callback(name, value, op, flags);
return 0;
}
/*
* Compare an existing entry with the desired key, and overwrite if the action
* is ENV_ENTER. This is simply a helper function for hsearch_r().
@ -247,9 +256,8 @@ static inline int _compare_and_overwrite_entry(struct env_entry item,
}
/* If there is a callback, call it */
if (htab->table[idx].entry.callback &&
htab->table[idx].entry.callback(item.key,
item.data, env_op_overwrite, flag)) {
if (do_callback(&htab->table[idx].entry, item.key,
item.data, env_op_overwrite, flag)) {
debug("callback() rejected setting variable "
"%s, skipping it!\n", item.key);
__set_errno(EINVAL);
@ -402,9 +410,8 @@ int hsearch_r(struct env_entry item, enum env_action action,
}
/* If there is a callback, call it */
if (htab->table[idx].entry.callback &&
htab->table[idx].entry.callback(item.key, item.data,
env_op_create, flag)) {
if (do_callback(&htab->table[idx].entry, item.key, item.data,
env_op_create, flag)) {
debug("callback() rejected setting variable "
"%s, skipping it!\n", item.key);
_hdelete(item.key, htab, &htab->table[idx].entry, idx);
@ -473,8 +480,8 @@ int hdelete_r(const char *key, struct hsearch_data *htab, int flag)
}
/* If there is a callback, call it */
if (htab->table[idx].entry.callback &&
htab->table[idx].entry.callback(key, NULL, env_op_delete, flag)) {
if (do_callback(&htab->table[idx].entry, key, NULL,
env_op_delete, flag)) {
debug("callback() rejected deleting variable "
"%s, skipping it!\n", key);
__set_errno(EINVAL);