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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,pathin=3D/in/file Signed-off-by: Alexander Bulekov Reviewed-by: Stefan Hajnoczi Reviewed-by: Darren Kenny --- chardev/char-file.c | 5 +++++ chardev/char.c | 3 +++ qemu-options.hx | 7 +++++-- 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/chardev/char-file.c b/chardev/char-file.c index 2fd80707e5..031f2aa7d7 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 *pathin =3D qemu_opt_get(opts, "pathin"); 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 (pathin) { + file->has_in =3D true; + file->in =3D g_strdup(pathin); + } =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..97e03a8e48 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 "pathin", + .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..488961099b 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[,pathin=3DPATH][,mux=3Don|off][,log= file=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[,pathin=3Dpathin]`` 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 + ``pathin`` specifies a separate file as the input to the chardev. If + ``pathin`` 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