commit a5ee3834bf060c8a238be84ea7287bdfa8303a27 Author: Nick Mathewson nickm@torproject.org Date: Fri Jan 11 16:27:45 2013 -0800
Handle EWOULDBLOCK as EAGAIN if they happen to be different.
Fixes bug 7935. Reported by 'oftc_must_be_destroyed'. --- changes/bug7935 | 4 ++++ src/common/compat.h | 7 ++++++- src/ext/eventdns.c | 4 ++++ 3 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/changes/bug7935 b/changes/bug7935 new file mode 100644 index 0000000..ef91001 --- /dev/null +++ b/changes/bug7935 @@ -0,0 +1,4 @@ + o Minor features (portability): + - Work correctly on unix systems where EAGAIN and EWOULDBLOCK are + separate error codes--or at least, don't break for that reason. + Fixes bug 7935. Reported by "oftc_must_be_destroyed". diff --git a/src/common/compat.h b/src/common/compat.h index 9c544fa..f597c12 100644 --- a/src/common/compat.h +++ b/src/common/compat.h @@ -53,6 +53,7 @@ #endif
#include <stdio.h> +#include <errno.h>
#if defined (WINCE) #include <fcntl.h> @@ -538,10 +539,14 @@ int tor_socket_errno(tor_socket_t sock); const char *tor_socket_strerror(int e); #else #define SOCK_ERRNO(e) e +#if EAGAIN == EWOULDBLOCK #define ERRNO_IS_EAGAIN(e) ((e) == EAGAIN) +#else +#define ERRNO_IS_EAGAIN(e) ((e) == EAGAIN || (e) == EWOULDBLOCK) +#endif #define ERRNO_IS_EINPROGRESS(e) ((e) == EINPROGRESS) #define ERRNO_IS_CONN_EINPROGRESS(e) ((e) == EINPROGRESS) -#define ERRNO_IS_ACCEPT_EAGAIN(e) ((e) == EAGAIN || (e) == ECONNABORTED) +#define ERRNO_IS_ACCEPT_EAGAIN(e) (ERRNO_IS_EAGAIN(e) || (e) == ECONNABORTED) #define ERRNO_IS_ACCEPT_RESOURCE_LIMIT(e) \ ((e) == EMFILE || (e) == ENFILE || (e) == ENOBUFS || (e) == ENOMEM) #define ERRNO_IS_EADDRINUSE(e) ((e) == EADDRINUSE) diff --git a/src/ext/eventdns.c b/src/ext/eventdns.c index 7e99f55..b1f586b 100644 --- a/src/ext/eventdns.c +++ b/src/ext/eventdns.c @@ -368,7 +368,11 @@ error_is_eagain(int err) #define CLOSE_SOCKET(x) closesocket(x) #else #define last_error(sock) (errno) +#if EAGAIN != EWOULDBLOCK +#define error_is_eagain(err) ((err) == EAGAIN || (err) == EWOULDBLOCK) +#else #define error_is_eagain(err) ((err) == EAGAIN) +#endif #define CLOSE_SOCKET(x) close(x) #endif