that lacks the writev function.
ares_timeout.c ares_destroy.c ares_mkquery.c ares_version.c \
ares_expand_name.c ares_parse_a_reply.c windows_port.c ares_strdup.c \
ares_expand_string.c ares_parse_ptr_reply.c ares_parse_aaaa_reply.c \
-ares_getnameinfo.c inet_net_pton.c bitncmp.c inet_ntop.c \
+ares_getnameinfo.c inet_net_pton.c bitncmp.c inet_ntop.c ares_writev.c \
ares_parse_ns_reply.c ares_llist.c ares__timeval.c ares_strcasecmp.c
HHEADERS = ares.h ares_private.h setup.h ares_dns.h ares_version.h \
- nameser.h inet_net_pton.h inet_ntop.h ares_ipv6.h bitncmp.h \
- setup_once.h ares_llist.h ares_strdup.h ares_strcasecmp.h
+ nameser.h inet_net_pton.h inet_ntop.h ares_ipv6.h bitncmp.h setup_once.h \
+ ares_llist.h ares_strdup.h ares_strcasecmp.h ares_writev.h
MANPAGES= ares_destroy.3 ares_expand_name.3 ares_expand_string.3 ares_fds.3 \
ares_free_hostent.3 ares_free_string.3 ares_gethostbyaddr.3 \
$(OBJ_DIR)\windows_port.obj \
$(OBJ_DIR)\ares_expand_string.obj \
$(OBJ_DIR)\ares_parse_ptr_reply.obj \
+ $(OBJ_DIR)\ares_writev.obj \
$(OBJ_DIR)\bitncmp.obj \
$(OBJ_DIR)\inet_net_pton.obj \
$(OBJ_DIR)\inet_ntop.obj
$(OBJ_DIR)\ares_llist.obj: ares_llist.c setup.h setup_once.h ares.h \
ares_private.h ares_llist.h
+
+$(OBJ_DIR)\ares_writev.obj: ares_writev.c setup.h setup_once.h ares.h \
+ ares_writev.h
#undef closesocket
#define closesocket(s) close_s(s)
#define writev(s,v,c) writev_s(s,v,c)
+#define HAVE_WRITEV 1
#endif
#ifdef NETWARE
# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n)
#endif
+#ifndef HAVE_WRITEV
+# include "ares_writev.h"
+# define writev(s,ptr,cnt) ares_writev(s,ptr,cnt)
+#endif
+
struct query;
struct send_request {
--- /dev/null
+
+/* $Id$ */
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "setup.h"
+
+#include <limits.h>
+#include "ares.h"
+#include "ares_private.h"
+
+#ifndef HAVE_WRITEV
+ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt)
+{
+ char *buffer, *bp;
+ int i;
+ size_t bytes = 0;
+ ssize_t result;
+
+ /* Validate iovcnt */
+ if (iovcnt <= 0)
+ {
+ SET_ERRNO(EINVAL);
+ return (-1);
+ }
+
+ /* Validate and find the sum of the iov_len values in the iov array */
+ for (i = 0; i < iovcnt; i++)
+ {
+ if (iov[i].iov_len > INT_MAX - bytes)
+ {
+ SET_ERRNO(EINVAL);
+ return (-1);
+ }
+ bytes += iov[i].iov_len;
+ }
+
+ if (bytes == 0)
+ return (0);
+
+ /* Allocate a temporary buffer to hold the data */
+ buffer = malloc(bytes);
+ if (!buffer)
+ {
+ SET_ERRNO(ENOMEM);
+ return (-1);
+ }
+
+ /* Copy the data into buffer */
+ for (bp = buffer, i = 0; i < iovcnt; ++i)
+ {
+ memcpy (bp, iov[i].iov_base, iov[i].iov_len);
+ bp += iov[i].iov_len;
+ }
+
+ /* Send buffer contents */
+ result = swrite(s, buffer, bytes);
+
+ free(buffer);
+
+ return (result);
+}
+#endif
+
--- /dev/null
+#ifndef HEADER_CARES_WRITEV_H
+#define HEADER_CARES_WRITEV_H
+
+/* $Id$ */
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "setup.h"
+#include "ares.h"
+
+#ifndef HAVE_WRITEV
+
+/* Structure for scatter/gather I/O. */
+struct iovec
+{
+ void *iov_base; /* Pointer to data. */
+ size_t iov_len; /* Length of data. */
+};
+
+extern ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt);
+
+#endif
+
+#endif /* HEADER_CARES_WRITEV_H */
sys/socket.h \
sys/ioctl.h \
sys/param.h \
+ sys/uio.h \
netdb.h \
netinet/in.h \
netinet/tcp.h \
CARES_CHECK_FUNC_STRNCASECMP
CARES_CHECK_FUNC_STRNCMPI
CARES_CHECK_FUNC_STRNICMP
+CARES_CHECK_FUNC_WRITEV
dnl check for AF_INET6
])
+dnl CARES_INCLUDES_SYS_UIO
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when sys/uio.h is to be included.
+
+AC_DEFUN([CARES_INCLUDES_SYS_UIO], [
+cares_includes_sys_uio="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_UIO_H
+# include <sys/uio.h>
+#endif
+/* includes end */"
+ AC_CHECK_HEADERS(
+ sys/types.h sys/uio.h,
+ [], [], [$cares_includes_sys_uio])
+])
+
+
dnl CARES_CHECK_FUNC_STRCASECMP
dnl -------------------------------------------------
dnl Verify if strcasecmp is available, prototyped, and
ac_cv_func_strnicmp="no"
fi
])
+
+
+dnl CARES_CHECK_FUNC_WRITEV
+dnl -------------------------------------------------
+dnl Verify if writev is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable cares_disallow_writev, then
+dnl HAVE_WRITEV will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_WRITEV], [
+ AC_REQUIRE([CARES_INCLUDES_SYS_UIO])dnl
+ #
+ tst_links_writev="unknown"
+ tst_proto_writev="unknown"
+ tst_compi_writev="unknown"
+ tst_allow_writev="unknown"
+ #
+ AC_MSG_CHECKING([if writev can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([writev])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_writev="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_writev="no"
+ ])
+ #
+ if test "$tst_links_writev" = "yes"; then
+ AC_MSG_CHECKING([if writev is prototyped])
+ AC_EGREP_CPP([writev],[
+ $cares_includes_sys_uio
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_writev="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_writev="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_writev" = "yes"; then
+ AC_MSG_CHECKING([if writev is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_sys_uio
+ ]],[[
+ if(0 != writev(0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_writev="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_writev="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_writev" = "yes"; then
+ AC_MSG_CHECKING([if writev usage allowed])
+ if test "x$cares_disallow_writev" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_writev="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_writev="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if writev might be used])
+ if test "$tst_links_writev" = "yes" &&
+ test "$tst_proto_writev" = "yes" &&
+ test "$tst_compi_writev" = "yes" &&
+ test "$tst_allow_writev" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_WRITEV, 1,
+ [Define to 1 if you have the writev function.])
+ ac_cv_func_writev="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_writev="no"
+ fi
+])
#ifndef NETWARE
-/* Structure for scatter/gather I/O. */
-struct iovec
-{
- void *iov_base; /* Pointer to data. */
- size_t iov_len; /* Length of data. */
-};
-
#ifndef __WATCOMC__
#define getpid() _getpid()
#endif
-int ares_writev (SOCKET s, const struct iovec *vector, size_t count);
-#define writev(s,vect,count) ares_writev(s,vect,count)
-
#endif /* !NETWARE */
#define NS_CMPRSFLGS 0xc0
ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */
ns_t_sink = 40, /* Kitchen sink (experimentatl) */
ns_t_opt = 41, /* EDNS0 option (meta-RR) */
+ ns_t_apl = 42, /* Address prefix list (RFC3123) */
+ ns_t_tkey = 249, /* Transaction key */
ns_t_tsig = 250, /* Transaction signature. */
ns_t_ixfr = 251, /* Incremental zone transfer. */
ns_t_axfr = 252, /* Transfer zone of authority. */
# End Source File\r
# Begin Source File\r
\r
+SOURCE=..\..\ares_writev.c\r
+# End Source File\r
+# Begin Source File\r
+\r
SOURCE=..\..\bitncmp.c\r
# End Source File\r
# Begin Source File\r
# End Source File\r
# Begin Source File\r
\r
+SOURCE=..\..\ares_writev.h\r
+# End Source File\r
+# Begin Source File\r
+\r
SOURCE=..\..\bitncmp.h\r
# End Source File\r
# Begin Source File\r
}
#endif
-int
-ares_writev (ares_socket_t s, const struct iovec *vector, size_t count)
-{
- char *buffer, *bp;
- size_t i, bytes = 0;
-
- /* Find the total number of bytes to write
- */
- for (i = 0; i < count; i++)
- bytes += vector[i].iov_len;
-
- if (bytes == 0) /* not an error */
- return (0);
- /* Allocate a temporary buffer to hold the data
- */
- buffer = bp = (char*) alloca (bytes);
- if (!buffer)
- {
- SET_ERRNO(ENOMEM);
- return (-1);
- }
-
- /* Copy the data into buffer.
- */
- for (i = 0; i < count; ++i)
- {
- memcpy (bp, vector[i].iov_base, vector[i].iov_len);
- bp += vector[i].iov_len;
- }
- return (int)swrite(s, buffer, bytes);
-}
#endif /* WIN32 builds only */
projects / platform / upstream / c-ares.git / commitdiff