CLEANUP: tcp/unix: remove useless NULL check in {tcp,unix}_bind_listener()

errmsg may only be NULL if errlen is zero. Clarify this in the comment too.

Reported-by: Dinko Korunic <dkorunic@reflected.net>
This commit is contained in:
Willy Tarreau 2013-01-24 01:41:38 +01:00
parent 4521ba689c
commit 8ab505bdef
2 changed files with 9 additions and 5 deletions

View File

@ -550,8 +550,9 @@ int tcp_connect_probe(struct connection *conn)
/* This function tries to bind a TCPv4/v6 listener. It may return a warning or
* an error message in <err> if the message is at most <errlen> bytes long
* (including '\0'). The return value is composed from ERR_ABORT, ERR_WARN,
* an error message in <errmsg> if the message is at most <errlen> bytes long
* (including '\0'). Note that <errmsg> may be NULL if <errlen> is also zero.
* The return value is composed from ERR_ABORT, ERR_WARN,
* ERR_ALERT, ERR_RETRYABLE and ERR_FATAL. ERR_NONE indicates that everything
* was alright and that no message was returned. ERR_RETRYABLE means that an
* error occurred but that it may vanish after a retry (eg: port in use), and
@ -568,7 +569,7 @@ int tcp_bind_listener(struct listener *listener, char *errmsg, int errlen)
const char *msg = NULL;
/* ensure we never return garbage */
if (errmsg && errlen)
if (errlen)
*errmsg = 0;
if (listener->state != LI_ASSIGNED)

View File

@ -144,7 +144,10 @@ static void destroy_uxst_socket(const char *path)
/* This function creates a UNIX socket associated to the listener. It changes
* the state from ASSIGNED to LISTEN. The socket is NOT enabled for polling.
* The return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL.
* The return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL. It
* may return a warning or an error message in <errmsg> if the message is at
* most <errlen> bytes long (including '\0'). Note that <errmsg> may be NULL if
* <errlen> is also zero.
*/
static int uxst_bind_listener(struct listener *listener, char *errmsg, int errlen)
{
@ -158,7 +161,7 @@ static int uxst_bind_listener(struct listener *listener, char *errmsg, int errle
int ret;
/* ensure we never return garbage */
if (errmsg && errlen)
if (errlen)
*errmsg = 0;
if (listener->state != LI_ASSIGNED)