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X-Received-From: 2607:f8b0:4864:20::644 Subject: [Qemu-devel] [PATCH v6 10/49] linux-user: Split out readv, writev X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: laurent@vivier.eu Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson --- linux-user/syscall-defs.h | 2 ++ linux-user/syscall-file.inc.c | 34 ++++++++++++++++++++++++++++++++++ linux-user/syscall.c | 22 ---------------------- linux-user/strace.list | 6 ------ 4 files changed, 36 insertions(+), 28 deletions(-) diff --git a/linux-user/syscall-defs.h b/linux-user/syscall-defs.h index b031de1375..130ba7e344 100644 --- a/linux-user/syscall-defs.h +++ b/linux-user/syscall-defs.h @@ -28,4 +28,6 @@ SYSCALL_DEF(readlink, ARG_STR, ARG_PTR, ARG_DEC); #ifdef TARGET_NR_readlinkat SYSCALL_DEF(readlinkat, ARG_ATDIRFD, ARG_STR, ARG_PTR, ARG_DEC); #endif +SYSCALL_DEF(readv, ARG_DEC, ARG_PTR, ARG_DEC); SYSCALL_DEF(write, ARG_DEC, ARG_PTR, ARG_DEC); +SYSCALL_DEF(writev, ARG_DEC, ARG_PTR, ARG_DEC); diff --git a/linux-user/syscall-file.inc.c b/linux-user/syscall-file.inc.c index 9c8025b252..9bd21ac5cd 100644 --- a/linux-user/syscall-file.inc.c +++ b/linux-user/syscall-file.inc.c @@ -343,6 +343,23 @@ SYSCALL_IMPL(read) return ret; } =20 +SYSCALL_IMPL(readv) +{ + int fd =3D arg1; + abi_ulong target_vec =3D arg2; + int count =3D arg3; + struct iovec *vec =3D lock_iovec(VERIFY_WRITE, target_vec, count, 0); + abi_long ret; + + if (vec !=3D NULL) { + ret =3D get_errno(safe_readv(fd, vec, count)); + unlock_iovec(vec, target_vec, count, 1); + } else { + ret =3D -host_to_target_errno(errno); + } + return ret; +} + static abi_long do_readlinkat(int dirfd, abi_ulong target_path, abi_ulong target_buf, abi_ulong bufsiz) { @@ -419,3 +436,20 @@ SYSCALL_IMPL(write) unlock_user(p, target_p, 0); return ret; } + +SYSCALL_IMPL(writev) +{ + int fd =3D arg1; + abi_ulong target_vec =3D arg2; + int count =3D arg3; + struct iovec *vec =3D lock_iovec(VERIFY_READ, target_vec, count, 1); + abi_long ret; + + if (vec !=3D NULL) { + ret =3D get_errno(safe_writev(fd, vec, count)); + unlock_iovec(vec, target_vec, count, 0); + } else { + ret =3D -host_to_target_errno(errno); + } + return ret; +} diff --git a/linux-user/syscall.c b/linux-user/syscall.c index c236a80437..df47ee106e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -8949,28 +8949,6 @@ static abi_long do_syscall1(void *cpu_env, int num, = abi_long arg1, /* NOTE: the flock constant seems to be the same for every Linux platform */ return get_errno(safe_flock(arg1, arg2)); - case TARGET_NR_readv: - { - struct iovec *vec =3D lock_iovec(VERIFY_WRITE, arg2, arg3, 0); - if (vec !=3D NULL) { - ret =3D get_errno(safe_readv(arg1, vec, arg3)); - unlock_iovec(vec, arg2, arg3, 1); - } else { - ret =3D -host_to_target_errno(errno); - } - } - return ret; - case TARGET_NR_writev: - { - struct iovec *vec =3D lock_iovec(VERIFY_READ, arg2, arg3, 1); - if (vec !=3D NULL) { - ret =3D get_errno(safe_writev(arg1, vec, arg3)); - unlock_iovec(vec, arg2, arg3, 0); - } else { - ret =3D -host_to_target_errno(errno); - } - } - return ret; #if defined(TARGET_NR_preadv) case TARGET_NR_preadv: { diff --git a/linux-user/strace.list b/linux-user/strace.list index f3a1b0fe31..e02a854cea 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -1073,9 +1073,6 @@ #ifdef TARGET_NR_readdir { TARGET_NR_readdir, "readdir" , NULL, NULL, NULL }, #endif -#ifdef TARGET_NR_readv -{ TARGET_NR_readv, "readv" , NULL, NULL, NULL }, -#endif #ifdef TARGET_NR_reboot { TARGET_NR_reboot, "reboot" , NULL, NULL, NULL }, #endif @@ -1608,9 +1605,6 @@ #ifdef TARGET_NR_waitpid { TARGET_NR_waitpid, "waitpid" , "%s(%d,%p,%#x)", NULL, NULL }, #endif -#ifdef TARGET_NR_writev -{ TARGET_NR_writev, "writev" , "%s(%d,%p,%#x)", NULL, NULL }, -#endif #ifdef TARGET_NR_utimensat { TARGET_NR_utimensat, "utimensat", NULL, print_utimensat, NULL }, #endif --=20 2.17.2