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lwip_selscan: lwip_selscan return -1 without setting errno number

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Closes https://github.com/espressif/esp-lwip/issues/27

Signed-off-by: Simon Goldschmidt <[email protected]>
This commit is contained in:
yuanjm
2021-01-29 10:28:22 +08:00
parent d050c33133
commit 9ba867277a
1 changed files with 8 additions and 1 deletions
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src/api/sockets.c
+8 -1
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@@ -2133,7 +2133,9 @@ lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
/* Call lwip_selscan again: there could have been events between
the last scan (without us on the list) and putting us on the list! */
nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset);
if (!nready) {
if (nready < 0) {
set_errno(EBADF);
} else if (!nready) {
/* Still none ready, just wait to be woken */
if (timeout == 0) {
/* Wait forever */
@@ -2207,6 +2209,11 @@ lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
/* See what's set now after waiting */
nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset);
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: nready=%d\n", nready));
if (nready < 0) {
set_errno(EBADF);
lwip_select_dec_sockets_used(maxfdp1, &used_sockets);
return -1;
}
}
}
}