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Fri, 21 Apr 2023 09:43:08 -0700 (PDT) From: Karim Taha To: qemu-devel@nongnu.org Cc: imp@bsdimp.com, Stacey Son , Karim Taha Subject: [PATCH v3 05/11] Signed-off-by: Karim Taha Date: Fri, 21 Apr 2023 18:41:54 +0200 Message-Id: <20230421164200.2913-6-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230421164200.2913-1-kariem.taha2.7@gmail.com> References: <20230421164200.2913-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::32d; envelope-from=kariem.taha2.7@gmail.com; helo=mail-wm1-x32d.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Stacey Son Definitions of the socket conversion functions. Add bsd-user/bsd-socket.c, which contains the actual definitions of the socket conversion functions. Signed-off-by: Karim Taha --- bsd-user/bsd-socket.c | 108 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 bsd-user/bsd-socket.c diff --git a/bsd-user/bsd-socket.c b/bsd-user/bsd-socket.c new file mode 100644 index 0000000000..8a5e44444d --- /dev/null +++ b/bsd-user/bsd-socket.c @@ -0,0 +1,108 @@ +/* + * BSD socket system call related helpers + * + * Copyright (c) 2013 Stacey D. Son + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#include "qemu/osdep.h" + +#include +#include +#include +#include + +#include "qemu.h" +#include "qemu-bsd.h" + +/* + * socket conversion + */ +abi_long target_to_host_sockaddr(struct sockaddr *addr, abi_ulong target_addr, + socklen_t len) +{ + const socklen_t unix_maxlen = sizeof(struct sockaddr_un); + sa_family_t sa_family; + struct target_sockaddr *target_saddr; + + target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); + if (target_saddr == 0) { + return -TARGET_EFAULT; + } + + sa_family = target_saddr->sa_family; + + /* + * Oops. The caller might send a incomplete sun_path; sun_path + * must be terminated by \0 (see the manual page), but unfortunately + * it is quite common to specify sockaddr_un length as + * "strlen(x->sun_path)" while it should be "strlen(...) + 1". We will + * fix that here if needed. + */ + if (target_saddr->sa_family == AF_UNIX) { + if (len < unix_maxlen && len > 0) { + char *cp = (char *)target_saddr; + + if (cp[len - 1] && !cp[len]) { + len++; + } + } + if (len > unix_maxlen) { + len = unix_maxlen; + } + } + + memcpy(addr, target_saddr, len); + addr->sa_family = sa_family; /* type uint8_t */ + addr->sa_len = target_saddr->sa_len; /* type uint8_t */ + unlock_user(target_saddr, target_addr, 0); + + return 0; +} + +abi_long host_to_target_sockaddr(abi_ulong target_addr, struct sockaddr *addr, + socklen_t len) +{ + struct target_sockaddr *target_saddr; + + target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); + if (target_saddr == 0) { + return -TARGET_EFAULT; + } + memcpy(target_saddr, addr, len); + target_saddr->sa_family = addr->sa_family; /* type uint8_t */ + target_saddr->sa_len = addr->sa_len; /* type uint8_t */ + unlock_user(target_saddr, target_addr, len); + + return 0; +} + +abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, abi_ulong target_addr, + socklen_t len) +{ + struct target_ip_mreqn *target_smreqn; + + target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); + if (target_smreqn == 0) { + return -TARGET_EFAULT; + } + mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; + mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; + if (len == sizeof(struct target_ip_mreqn)) { + mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); + } + unlock_user(target_smreqn, target_addr, 0); + + return 0; +}