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Sat, 19 Aug 2023 02:49:19 -0700 (PDT) From: Karim Taha To: qemu-devel@nongnu.org Cc: imp@bsdimp.com, Stacey Son , Karim Taha Subject: [PATCH 15/22] Implement mlock(2), munlock(2), mlockall(2), munlockall(2), madvise(2), minherit(2) Date: Sat, 19 Aug 2023 11:47:59 +0200 Message-Id: <20230819094806.14965-16-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230819094806.14965-1-kariem.taha2.7@gmail.com> References: <20230819094806.14965-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42c; envelope-from=kariem.taha2.7@gmail.com; helo=mail-wr1-x42c.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 --- bsd-user/bsd-mem.h | 44 +++++++++++++++++++++++++++++++++++ bsd-user/freebsd/os-syscall.c | 24 +++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/bsd-user/bsd-mem.h b/bsd-user/bsd-mem.h index 68d79ac080..f76881519c 100644 --- a/bsd-user/bsd-mem.h +++ b/bsd-user/bsd-mem.h @@ -100,4 +100,48 @@ static inline abi_long do_bsd_msync(abi_long addr, abi_long len, abi_long flags) return get_errno(msync(g2h_untagged(addr), len, flags)); } +/* mlock(2) */ +static inline abi_long do_bsd_mlock(abi_long arg1, abi_long arg2) +{ + return get_errno(mlock(g2h_untagged(arg1), arg2)); +} + +/* munlock(2) */ +static inline abi_long do_bsd_munlock(abi_long arg1, abi_long arg2) +{ + return get_errno(munlock(g2h_untagged(arg1), arg2)); +} + +/* mlockall(2) */ +static inline abi_long do_bsd_mlockall(abi_long arg1) +{ + return get_errno(mlockall(arg1)); +} + +/* munlockall(2) */ +static inline abi_long do_bsd_munlockall(void) +{ + return get_errno(munlockall()); +} + +/* madvise(2) */ +static inline abi_long do_bsd_madvise(abi_long arg1, abi_long arg2, + abi_long arg3) +{ + /* + * A straight passthrough may not be safe because qemu sometimes + * turns private file-backed mapping into anonymous mappings. This + * will break MADV_DONTNEED. This is a hint, so ignoring and returing + * success is ok. + */ + return get_errno(0); +} + +/* minherit(2) */ +static inline abi_long do_bsd_minherit(abi_long addr, abi_long len, + abi_long inherit) +{ + return get_errno(minherit(g2h_untagged(addr), len, inherit)); +} + #endif /* BSD_USER_BSD_MEM_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index 3871b15309..96469f6a63 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -503,6 +503,30 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, ret = do_bsd_msync(arg1, arg2, arg3); break; + case TARGET_FREEBSD_NR_mlock: /* mlock(2) */ + ret = do_bsd_mlock(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_munlock: /* munlock(2) */ + ret = do_bsd_munlock(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_mlockall: /* mlockall(2) */ + ret = do_bsd_mlockall(arg1); + break; + + case TARGET_FREEBSD_NR_munlockall: /* munlockall(2) */ + ret = do_bsd_munlockall(); + break; + + case TARGET_FREEBSD_NR_madvise: /* madvise(2) */ + ret = do_bsd_madvise(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_minherit: /* minherit(2) */ + ret = do_bsd_minherit(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);