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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id t9-20020a056e02060900b0034b58dd5694sm2805491ils.15.2023.08.28.16.41.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Aug 2023 16:41:58 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Reinoud Zandijk , Warner Losh , Ryo ONODERA , Kyle Evans , Stacey Son , Karim Taha , Richard Henderson Subject: [PULL 22/36] bsd-user: Implement statfs related syscalls Date: Mon, 28 Aug 2023 17:38:07 -0600 Message-ID: <20230828233821.43074-23-imp@bsdimp.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230828233821.43074-1-imp@bsdimp.com> References: <20230828233821.43074-1-imp@bsdimp.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::133; envelope-from=imp@bsdimp.com; helo=mail-il1-x133.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 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Stacey Son Implement the following syscalls: statfs(2) fstatfs(2) getfsstat(2) Signed-off-by: Stacey Son Signed-off-by: Karim Taha Reviewed-by: Richard Henderson Signed-off-by: Warner Losh --- bsd-user/freebsd/os-stat.h | 69 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/bsd-user/freebsd/os-stat.h b/bsd-user/freebsd/os-stat.h index 935663c0713..9492c93c55a 100644 --- a/bsd-user/freebsd/os-stat.h +++ b/bsd-user/freebsd/os-stat.h @@ -210,4 +210,73 @@ static inline abi_long do_freebsd_fhstatfs(abi_ulong target_fhp_addr, return h2t_freebsd_statfs(target_stfs_addr, &host_stfs); } +/* statfs(2) */ +static inline abi_long do_freebsd_statfs(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p; + struct statfs host_stfs; + + LOCK_PATH(p, arg1); + ret = get_errno(statfs(path(p), &host_stfs)); + UNLOCK_PATH(p, arg1); + if (is_error(ret)) { + return ret; + } + + return h2t_freebsd_statfs(arg2, &host_stfs); +} + +/* fstatfs(2) */ +static inline abi_long do_freebsd_fstatfs(abi_long fd, abi_ulong target_addr) +{ + abi_long ret; + struct statfs host_stfs; + + ret = get_errno(fstatfs(fd, &host_stfs)); + if (is_error(ret)) { + return ret; + } + + return h2t_freebsd_statfs(target_addr, &host_stfs); +} + +/* getfsstat(2) */ +static inline abi_long do_freebsd_getfsstat(abi_ulong target_addr, + abi_long bufsize, abi_long flags) +{ + abi_long ret; + struct statfs *host_stfs; + int count; + long host_bufsize; + + count = bufsize / sizeof(struct target_statfs); + + /* if user buffer is NULL then return number of mounted FS's */ + if (target_addr == 0 || count == 0) { + return get_errno(freebsd11_getfsstat(NULL, 0, flags)); + } + + /* XXX check count to be reasonable */ + host_bufsize = sizeof(struct statfs) * count; + host_stfs = alloca(host_bufsize); + if (!host_stfs) { + return -TARGET_EINVAL; + } + + ret = count = get_errno(getfsstat(host_stfs, host_bufsize, flags)); + if (is_error(ret)) { + return ret; + } + + while (count--) { + if (h2t_freebsd_statfs((target_addr + + (count * sizeof(struct target_statfs))), + &host_stfs[count])) { + return -TARGET_EFAULT; + } + } + return ret; +} + #endif /* BSD_USER_FREEBSD_OS_STAT_H */