return q - (const uint8_t*) p;
}
-
-struct iovec_wrapper *iovw_new(void) {
- return malloc0(sizeof(struct iovec_wrapper));
-}
-
-void iovw_free_contents(struct iovec_wrapper *iovw, bool free_vectors) {
- if (free_vectors)
- for (size_t i = 0; i < iovw->count; i++)
- free(iovw->iovec[i].iov_base);
-
- iovw->iovec = mfree(iovw->iovec);
- iovw->count = 0;
-}
-
-struct iovec_wrapper *iovw_free_free(struct iovec_wrapper *iovw) {
- iovw_free_contents(iovw, true);
-
- return mfree(iovw);
-}
-
-struct iovec_wrapper *iovw_free(struct iovec_wrapper *iovw) {
- iovw_free_contents(iovw, false);
-
- return mfree(iovw);
-}
-
-int iovw_put(struct iovec_wrapper *iovw, void *data, size_t len) {
- if (iovw->count >= IOV_MAX)
- return -E2BIG;
-
- if (!GREEDY_REALLOC(iovw->iovec, iovw->count + 1))
- return -ENOMEM;
-
- iovw->iovec[iovw->count++] = IOVEC_MAKE(data, len);
- return 0;
-}
-
-int iovw_put_string_field(struct iovec_wrapper *iovw, const char *field, const char *value) {
- _cleanup_free_ char *x = NULL;
- int r;
-
- x = strjoin(field, value);
- if (!x)
- return -ENOMEM;
-
- r = iovw_put(iovw, x, strlen(x));
- if (r >= 0)
- TAKE_PTR(x);
-
- return r;
-}
-
-int iovw_put_string_field_free(struct iovec_wrapper *iovw, const char *field, char *value) {
- _cleanup_free_ _unused_ char *free_ptr = value;
-
- return iovw_put_string_field(iovw, field, value);
-}
-
-void iovw_rebase(struct iovec_wrapper *iovw, char *old, char *new) {
- for (size_t i = 0; i < iovw->count; i++)
- iovw->iovec[i].iov_base = (char *)iovw->iovec[i].iov_base - old + new;
-}
-
-size_t iovw_size(struct iovec_wrapper *iovw) {
- size_t n = 0;
-
- for (size_t i = 0; i < iovw->count; i++)
- n += iovw->iovec[i].iov_len;
-
- return n;
-}
-
-int iovw_append(struct iovec_wrapper *target, const struct iovec_wrapper *source) {
- size_t original_count;
- int r;
-
- assert(target);
-
- /* This duplicates the source and merges it into the target. */
-
- if (iovw_isempty(source))
- return 0;
-
- original_count = target->count;
-
- FOREACH_ARRAY(iovec, source->iovec, source->count) {
- void *dup;
-
- dup = memdup(iovec->iov_base, iovec->iov_len);
- if (!dup) {
- r = -ENOMEM;
- goto rollback;
- }
-
- r = iovw_consume(target, dup, iovec->iov_len);
- if (r < 0)
- goto rollback;
- }
-
- return 0;
-
-rollback:
- for (size_t i = original_count; i < target->count; i++)
- free(target->iovec[i].iov_base);
-
- target->count = original_count;
- return r;
-}