--- l2.h.in 2001/10/09 15:34:55 1.13
+++ l2.h.in 2001/11/03 22:51:36 1.14
@@ -99,14 +99,16 @@
/* list of return values */
typedef enum {
- L2_OK,
+ L2_OK, /* everything ok */
+ L2_OK_PASS, /* everything ok - pass downstream */
L2_ERR_ARG, /* invalid argument */
L2_ERR_USE, /* invalid usage */
L2_ERR_MEM, /* no more memory available */
L2_ERR_SYS, /* system error (see errno) */
L2_ERR_IO, /* input/output error */
L2_ERR_FMT, /* message formating error */
- L2_ERR_INT /* internal error */
+ L2_ERR_INT, /* internal error */
+ L2_ERR_CH /* no (more) channel found */
} l2_result_t;
/* context union for storing data */
@@ -199,8 +201,9 @@
l2_result_t l2_channel_close (l2_channel_t *ch);
l2_result_t l2_channel_destroy (l2_channel_t *ch);
l2_result_t l2_channel_stack (l2_channel_t *ch, l2_channel_t *chTop);
-l2_channel_t *l2_channel_downstream (l2_channel_t *ch);
-l2_chtype_t l2_channel_type (l2_channel_t *ch);
+l2_result_t l2_channel_upstream (l2_channel_t *ch, l2_channel_t **chU);
+l2_result_t l2_channel_downstream (l2_channel_t *ch, l2_channel_t **chD);
+l2_result_t l2_channel_type (l2_channel_t *ch, l2_chtype_t *type);
l2_result_t l2_channel_errorinfo (l2_channel_t *ch, l2_result_t rv, const char *fmt, ...);
char *l2_channel_strerror (l2_channel_t *ch, l2_result_t rv);
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