From aaa0e88d55abcddfdf895508b86fe18e3d6b5cea Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Fri, 3 Jan 2014 07:20:29 +0000 Subject: [PATCH] socket: preserve errno before rb_sys_fail_* and friends rb_sprintf and other methods may clear errno. Preserve it and reset it immediately before rb_sys_fail* functions. --- ext/socket/socket.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/ext/socket/socket.c b/ext/socket/socket.c index 5fd7465..c968598 100644 --- a/ext/socket/socket.c +++ b/ext/socket/socket.c @@ -16,12 +16,14 @@ void rsock_sys_fail_host_port(const char *mesg, VALUE host, VALUE port) { VALUE message; + int err = errno; port = rb_String(port); message = rb_sprintf("%s for \"%s\" port %s", mesg, StringValueCStr(host), StringValueCStr(port)); + errno = err; rb_sys_fail_str(message); } @@ -29,6 +31,8 @@ void rsock_sys_fail_path(const char *mesg, VALUE path) { VALUE message; + int err = errno; + if (RB_TYPE_P(path, T_STRING)) { if (memchr(RSTRING_PTR(path), '\0', RSTRING_LEN(path))) { path = rb_str_inspect(path); @@ -39,6 +43,7 @@ rsock_sys_fail_path(const char *mesg, VALUE path) message = rb_sprintf("%s for \"%s\"", mesg, StringValueCStr(path)); } + errno = err; rb_sys_fail_str(message); } else { @@ -50,9 +55,11 @@ void rsock_sys_fail_sockaddr(const char *mesg, struct sockaddr *addr, socklen_t len) { VALUE rai; + int err = errno; rai = rsock_addrinfo_new(addr, len, PF_UNSPEC, 0, 0, Qnil, Qnil); + errno = err; rsock_sys_fail_raddrinfo(mesg, rai); } @@ -60,18 +67,24 @@ void rsock_sys_fail_raddrinfo(const char *mesg, VALUE rai) { VALUE str, message; + int err = errno; str = rsock_addrinfo_inspect_sockaddr(rai); message = rb_sprintf("%s for %s", mesg, StringValueCStr(str)); + errno = err; rb_sys_fail_str(message); } void rsock_sys_fail_raddrinfo_or_sockaddr(const char *mesg, VALUE addr, VALUE rai) { + int err = errno; + if (NIL_P(rai)) { StringValue(addr); + + errno = err; rsock_sys_fail_sockaddr(mesg, (struct sockaddr *)RSTRING_PTR(addr), (socklen_t)RSTRING_LEN(addr)); /* overflow should be checked already */ -- 1.8.5.2.193.g2394e94