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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id q45-20020a056638346d00b00331563be3ecsm1553561jav.121.2022.06.24.14.47.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jun 2022 14:47:19 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Kyle Evans , Warner Losh , Stacey Son , Jung-uk Kim , Richard Henderson Subject: [PATCH v2 01/11] bsd-user: Implement mount, umount and nmount Date: Fri, 24 Jun 2022 15:47:32 -0600 Message-Id: <20220624214742.89229-2-imp@bsdimp.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220624214742.89229-1-imp@bsdimp.com> References: <20220624214742.89229-1-imp@bsdimp.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::d2c; envelope-from=imp@bsdimp.com; helo=mail-io1-xd2c.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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Stacey Son Signed-off-by: Jung-uk Kim Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/bsd-file.h | 52 +++++++++++++++++++++++++++++++++++ bsd-user/freebsd/os-syscall.c | 13 +++++++++ 2 files changed, 65 insertions(+) diff --git a/bsd-user/bsd-file.h b/bsd-user/bsd-file.h index b2dca586129..a0f03102639 100644 --- a/bsd-user/bsd-file.h +++ b/bsd-user/bsd-file.h @@ -549,4 +549,56 @@ static abi_long do_bsd_sync(void) return 0; } +/* mount(2) */ +static abi_long do_bsd_mount(abi_long arg1, abi_long arg2, abi_long arg3, + abi_long arg4) +{ + abi_long ret; + void *p1, *p2; + + LOCK_PATH2(p1, arg1, p2, arg2); + /* + * XXX arg4 should be locked, but it isn't clear how to do that since it may + * be not be a NULL-terminated string. + */ + if (arg4 == 0) { + ret = get_errno(mount(p1, p2, arg3, NULL)); /* XXX path(p2)? */ + } else { + ret = get_errno(mount(p1, p2, arg3, g2h_untagged(arg4))); /* XXX path(p2)? */ + } + UNLOCK_PATH2(p1, arg1, p2, arg2); + + return ret; +} + +/* unmount(2) */ +static abi_long do_bsd_unmount(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(unmount(p, arg2)); /* XXX path(p)? */ + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* nmount(2) */ +static abi_long do_bsd_nmount(abi_long arg1, abi_long count, + abi_long flags) +{ + abi_long ret; + struct iovec *vec = lock_iovec(VERIFY_READ, arg1, count, 1); + + if (vec != NULL) { + ret = get_errno(nmount(vec, count, flags)); + unlock_iovec(vec, arg1, count, 0); + } else { + return -TARGET_EFAULT; + } + + return ret; +} + #endif /* BSD_FILE_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index 2623caf8007..bd4dfa6ddc7 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -33,6 +33,7 @@ #include "qemu/path.h" #include #include +#include #include #include @@ -373,6 +374,18 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, ret = do_bsd_sync(); break; + case TARGET_FREEBSD_NR_mount: /* mount(2) */ + ret = do_bsd_mount(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_unmount: /* unmount(2) */ + ret = do_bsd_unmount(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_nmount: /* nmount(2) */ + ret = do_bsd_nmount(arg1, arg2, arg3); + break; + default: qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); ret = -TARGET_ENOSYS;