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Thu, 14 Sep 2023 13:42:50 -0700 (PDT) From: Karim Taha To: qemu-devel@nongnu.org Cc: Richard Henderson , imp@bsdimp.com, Stacey Son , Karim Taha Subject: [PATCH v5 17/23] bsd-user: Implement mincore(2) Date: Thu, 14 Sep 2023 23:41:01 +0300 Message-ID: <20230914204107.23778-18-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230914204107.23778-1-kariem.taha2.7@gmail.com> References: <20230914204107.23778-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::335; envelope-from=kariem.taha2.7@gmail.com; helo=mail-wm1-x335.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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 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 Signed-off-by: Stacey Son Signed-off-by: Karim Taha Reviewed-by: Richard Henderson Reviewed-by: Warner Losh --- bsd-user/bsd-mem.h | 23 +++++++++++++++++++++++ bsd-user/freebsd/os-syscall.c | 4 ++++ 2 files changed, 27 insertions(+) diff --git a/bsd-user/bsd-mem.h b/bsd-user/bsd-mem.h index b00ab3aed8..0c8d96d9a4 100644 --- a/bsd-user/bsd-mem.h +++ b/bsd-user/bsd-mem.h @@ -189,4 +189,27 @@ static inline abi_long do_bsd_minherit(abi_long addr, abi_long len, return get_errno(minherit(g2h_untagged(addr), len, inherit)); } +/* mincore(2) */ +static inline abi_long do_bsd_mincore(abi_ulong target_addr, abi_ulong len, + abi_ulong target_vec) +{ + abi_long ret; + void *p; + abi_ulong vec_len = DIV_ROUND_UP(len, TARGET_PAGE_SIZE); + + if (!guest_range_valid_untagged(target_addr, len) + || !page_check_range(target_addr, len, PAGE_VALID)) { + return -TARGET_EFAULT; + } + + p = lock_user(VERIFY_WRITE, target_vec, vec_len, 0); + if (p == NULL) { + return -TARGET_EFAULT; + } + ret = get_errno(mincore(g2h_untagged(target_addr), len, p)); + unlock_user(p, target_vec, vec_len); + + return ret; +} + #endif /* BSD_USER_BSD_MEM_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index 600d048120..8ba5fcc6ca 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -635,6 +635,10 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, ret = do_bsd_minherit(arg1, arg2, arg3); break; + case TARGET_FREEBSD_NR_mincore: /* mincore(2) */ + ret = do_bsd_mincore(arg1, arg2, arg3); + break; + #if defined(__FreeBSD_version) && __FreeBSD_version >= 1300048 case TARGET_FREEBSD_NR_shm_open2: /* shm_open2(2) */ ret = do_freebsd_shm_open2(arg1, arg2, arg3, arg4, arg5);