vlc | branch: master | Rémi Denis-Courmont <[email protected]> | Sun Jan 10 22:47:33 2016 +0200| [3f72fbddb75afdd0a36e994045b49b760baccb4a] | committer: Rémi Denis-Courmont
compat: replace recvmsg() > http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=3f72fbddb75afdd0a36e994045b49b760baccb4a --- compat/recvmsg.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++ configure.ac | 2 +- include/vlc_fixups.h | 5 ++++ 3 files changed, 82 insertions(+), 1 deletion(-) diff --git a/compat/recvmsg.c b/compat/recvmsg.c new file mode 100644 index 0000000..5cb56f7 --- /dev/null +++ b/compat/recvmsg.c @@ -0,0 +1,76 @@ +/***************************************************************************** + * recvmsg.c: POSIX recvmsg() replacement + ***************************************************************************** + * Copyright © 2016 Rémi Denis-Courmont + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. + *****************************************************************************/ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#ifdef _WIN32 +# include <errno.h> +# include <stdlib.h> +# include <mswsock.h> + +ssize_t recvmsg(int fd, struct msghdr *msg, int flags) +{ + if (msg->msg_controllen != 0) + { + errno = ENOSYS; + return -1; + } + + if (msg->msg_iovlen > IOV_MAX) + { + errno = EINVAL; + return -1; + } + + WSABUF *buf = malloc(msg->msg_iovlen * sizeof (*buf)); + if (buf == NULL) + return -1; + + for (unsigned i = 0; i < msg->msg_iovlen; i++) + { + buf[i].len = msg->msg_iov[i].iov_len; + buf[i].buf = msg->msg_iov[i].iov_base; + } + + DWORD dwFlags = flags; + INT fromlen = msg->msg_namelen; + DWORD rcvd; + int ret = WSARecvFrom(fd, buf, msg->msg_iovlen, &rcvd, &dwFlags, + msg->msg_name, &fromlen, NULL, NULL); + free(buf); + + if (ret == 0) + { + msg->msg_namelen = fromlen; + msg->msg_flags = dwFlags; + return rcvd; + } + + switch (WSAGetLastError()) + { + case WSAEWOULDBLOCK: + errno = EAGAIN; + break; + } + return -1; +} +#endif diff --git a/configure.ac b/configure.ac index fedf527..3c3b607 100644 --- a/configure.ac +++ b/configure.ac @@ -565,7 +565,7 @@ need_libc=false dnl Check for usual libc functions AC_CHECK_DECLS([nanosleep],,,[#include <time.h>]) AC_CHECK_FUNCS([daemon fcntl flock fstatvfs fork getenv getpwuid_r isatty lstat memalign mkostemp mmap open_memstream openat pread posix_fadvise posix_madvise setlocale stricmp strnicmp strptime uselocale pthread_cond_timedwait_monotonic_np pthread_condattr_setclock]) -AC_REPLACE_FUNCS([atof atoll dirfd fdopendir ffsll flockfile fsync getdelim getpid lldiv nrand48 poll posix_memalign rewind sendmsg setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strnstr strsep strtof strtok_r strtoll swab tdestroy timegm timespec_get strverscmp]) +AC_REPLACE_FUNCS([atof atoll dirfd fdopendir ffsll flockfile fsync getdelim getpid lldiv nrand48 poll posix_memalign recvmsg rewind sendmsg setenv strcasecmp strcasestr strdup strlcpy strndup strnlen strnstr strsep strtof strtok_r strtoll swab tdestroy timegm timespec_get strverscmp]) AC_CHECK_FUNCS(fdatasync,, [AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.]) ]) diff --git a/include/vlc_fixups.h b/include/vlc_fixups.h index fdb6ccf..ed2781c 100644 --- a/include/vlc_fixups.h +++ b/include/vlc_fixups.h @@ -365,6 +365,11 @@ struct msghdr }; #endif +#ifndef HAVE_RECVMSG +struct msghdr; +ssize_t recvmsg(int, struct msghdr *, int); +#endif + #ifndef HAVE_SENDMSG struct msghdr; ssize_t sendmsg(int, const struct msghdr *, int); _______________________________________________ vlc-commits mailing list [email protected] https://mailman.videolan.org/listinfo/vlc-commits
