From: Eugene Crosser <crosser@average.org>
Date: Tue, 12 Mar 2019 08:47:57 +0000 (+0100)
Subject: save errnos
X-Git-Url: http://www.average.org/gitweb/?p=psmb.git;a=commitdiff_plain;h=b59ce6ecc3287f39125703670720c8323235c8ac

save errnos
---

diff --git a/include/psmb.h b/include/psmb.h
index 4b92756..5092f6a 100644
--- a/include/psmb.h
+++ b/include/psmb.h
@@ -12,6 +12,7 @@ psmb_ctx_t *psmb_new_mm(void *(*malloc)(size_t size),
 			void *(*realloc)(void *ptr, size_t size));
 psmb_result_t psmb_set_pmtu(psmb_ctx_t *ctx, unsigned int pmtu);
 psmb_result_t psmb_set_port(psmb_ctx_t *ctx, unsigned short pmtu);
+psmb_result_t psmb_set_mgrp(psmb_ctx_t *ctx, struct {unsigned char _uc[16];} pfx, unsigned char bits);
 psmb_result_t psmb_open(psmb_ctx_t *ctx);
 void psmb_destroy(psmb_ctx_t *ctx);
 int psmb_getfd(psmb_ctx_t *ctx);
diff --git a/src/psmb_socket.c b/src/psmb_socket.c
index a7c42ef..660a563 100644
--- a/src/psmb_socket.c
+++ b/src/psmb_socket.c
@@ -68,20 +68,26 @@ psmb_result_t psmb_open(psmb_ctx_t *ctx)
 	}
 	if (setsockopt(ctx->fd, SOL_SOCKET, SO_REUSEADDR,
 			&on, sizeof(on)) < 0) {
+		int sverr = errno;
 		close(ctx->fd);
 		ctx->fd = -1;
+		errno = sverr;
 		return (psmb_result_t){PSMB_ERROR};
 	}
 	if (setsockopt(ctx->fd, IPPROTO_IPV6, IPV6_PKTINFO,
 			&on, sizeof(on)) < 0) {
+		int sverr = errno;
 		close(ctx->fd);
 		ctx->fd = -1;
+		errno = sverr;
 		return (psmb_result_t){PSMB_ERROR};
 	}
 	if (bind(ctx->fd, (struct sockaddr *)&addr,
 			sizeof(struct sockaddr)) == -1) {
+		int sverr = errno;
 		close(ctx->fd);
 		ctx->fd = -1;
+		errno = sverr;
 		return (psmb_result_t){PSMB_ERROR};
 	}
 	return (psmb_result_t){PSMB_OK};