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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.236.98; envelope-from=alxndr@bu.edu; helo=NAM11-BN8-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/01 13:26:13 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Received-From: 40.107.236.98 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexander Bulekov , Paolo Bonzini , stefanha@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @bushare.onmicrosoft.com) Content-Type: text/plain; charset="utf-8" char-file already supports distinct paths for input/output but it was only possible to specify a distinct input through QMP. With this change, we can also specify a distinct input with the -chardev file argument: qemu -chardev file,id=3Dchar1,path=3D/out/file,in=3D/in/file Signed-off-by: Alexander Bulekov Reviewed-by: Stefan Hajnoczi --- chardev/char-file.c | 5 +++++ chardev/char.c | 3 +++ qemu-options.hx | 7 +++++-- 3 files changed, 13 insertions(+), 2 deletions(-) The naming here is awkward, with path=3D really turning into "out" when in=3D is specified, though i'm not sure about what is a good solution. diff --git a/chardev/char-file.c b/chardev/char-file.c index 2fd80707e5..cc742cc234 100644 --- a/chardev/char-file.c +++ b/chardev/char-file.c @@ -100,6 +100,7 @@ static void qemu_chr_parse_file_out(QemuOpts *opts, Cha= rdevBackend *backend, Error **errp) { const char *path =3D qemu_opt_get(opts, "path"); + const char *in =3D qemu_opt_get(opts, "in"); ChardevFile *file; =20 backend->type =3D CHARDEV_BACKEND_KIND_FILE; @@ -110,6 +111,10 @@ static void qemu_chr_parse_file_out(QemuOpts *opts, Ch= ardevBackend *backend, file =3D backend->u.file.data =3D g_new0(ChardevFile, 1); qemu_chr_parse_common(opts, qapi_ChardevFile_base(file)); file->out =3D g_strdup(path); + if (in) { + file->has_in =3D true; + file->in =3D g_strdup(qemu_opt_get(opts, "in")); + } =20 file->has_append =3D true; file->append =3D qemu_opt_get_bool(opts, "append", false); diff --git a/chardev/char.c b/chardev/char.c index e77564060d..797574f205 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -849,6 +849,9 @@ QemuOptsList qemu_chardev_opts =3D { },{ .name =3D "path", .type =3D QEMU_OPT_STRING, + },{ + .name =3D "in", + .type =3D QEMU_OPT_STRING, },{ .name =3D "host", .type =3D QEMU_OPT_STRING, diff --git a/qemu-options.hx b/qemu-options.hx index 292d4e7c0c..bbb091872f 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2938,7 +2938,7 @@ DEF("chardev", HAS_ARG, QEMU_OPTION_chardev, "-chardev vc,id=3Did[[,width=3Dwidth][,height=3Dheight]][[,cols=3Dcols= ][,rows=3Drows]]\n" " [,mux=3Don|off][,logfile=3DPATH][,logappend=3Don|off]\n" "-chardev ringbuf,id=3Did[,size=3Dsize][,logfile=3DPATH][,logappend=3D= on|off]\n" - "-chardev file,id=3Did,path=3Dpath[,mux=3Don|off][,logfile=3DPATH][,lo= gappend=3Don|off]\n" + "-chardev file,id=3Did,path=3Dpath[,in=3DPATH][,mux=3Don|off][,logfile= =3DPATH][,logappend=3Don|off]\n" "-chardev pipe,id=3Did,path=3Dpath[,mux=3Don|off][,logfile=3DPATH][,lo= gappend=3Don|off]\n" #ifdef _WIN32 "-chardev console,id=3Did[,mux=3Don|off][,logfile=3DPATH][,logappend= =3Don|off]\n" @@ -3137,13 +3137,16 @@ The available backends are: Create a ring buffer with fixed size ``size``. size must be a power of two and defaults to ``64K``. =20 -``-chardev file,id=3Did,path=3Dpath`` +``-chardev file,id=3Did,path=3Dpath,in=3Din`` Log all traffic received from the guest to a file. =20 ``path`` specifies the path of the file to be opened. This file will be created if it does not already exist, and overwritten if it does. ``path`` is required. =20 + ``in`` specifies a separate file as the input to the chardev. If + ``in`` is omitted, ``path`` is used for both input and output + ``-chardev pipe,id=3Did,path=3Dpath`` Create a two-way connection to the guest. The behaviour differs slightly between Windows hosts and other hosts: --=20 2.26.2