[libvirt] [RFC PATCH 1/4] qemu-options: Add -filefd command line option
This patch provides support for the -filefd command line option.
This option will allow passing of a filename and its corresponding
file descriptor to QEMU at exec time.
Signed-off-by: Corey Bryant <coreyb(a)linux.vnet.ibm.com>
---
qemu-config.c | 17 +++++++++++++++++
qemu-config.h | 1 +
qemu-options.hx | 17 +++++++++++++++++
3 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/qemu-config.c b/qemu-config.c
index be84a03..64afac6 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -613,6 +613,22 @@ QemuOptsList qemu_boot_opts = {
},
};
+QemuOptsList qemu_filefd_opts = {
+ .name = "filefd",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_filefd_opts.head),
+ .desc = {
+ {
+ .name = "file",
+ .type = QEMU_OPT_STRING,
+ }, {
+ .name = "fd",
+ .type = QEMU_OPT_NUMBER,
+ },
+ { /*End of list */ }
+ },
+};
+
+
static QemuOptsList *vm_config_groups[32] = {
&qemu_drive_opts,
&qemu_chardev_opts,
@@ -628,6 +644,7 @@ static QemuOptsList *vm_config_groups[32] = {
&qemu_machine_opts,
&qemu_boot_opts,
&qemu_iscsi_opts,
+ &qemu_filefd_opts,
NULL,
};
diff --git a/qemu-config.h b/qemu-config.h
index 6d7365d..6be54f1 100644
--- a/qemu-config.h
+++ b/qemu-config.h
@@ -4,6 +4,7 @@
extern QemuOptsList qemu_fsdev_opts;
extern QemuOptsList qemu_virtfs_opts;
extern QemuOptsList qemu_spice_opts;
+extern QemuOptsList qemu_filefd_opts;
QemuOptsList *qemu_find_opts(const char *group);
void qemu_add_opts(QemuOptsList *list);
diff --git a/qemu-options.hx b/qemu-options.hx
index 8b66264..5f6782c 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2743,6 +2743,23 @@ DEF("qtest-log", HAS_ARG, QEMU_OPTION_qtest_log,
"-qtest-log LOG specify tracing options\n",
QEMU_ARCH_ALL)
+DEF("filefd", HAS_ARG, QEMU_OPTION_filefd,
+ "-filefd file=<filename>,fd=<fd>\n"
+ " passes a filename and its corresponding file
descriptor\n",
+ QEMU_ARCH_ALL)
+STEXI
+@item -filefd file=@var{filename},fd=@var{fd}
+@findex -filefd
+This is used when a management application opens a file on behalf of QEMU.
+Instead of performing an open, QEMU will use the fd passed on this option.
+@table @option
+@item file=@var{filename}
+The name of the file.
+@item fd=@var{fd}
+The file descriptor that corresponds to @var{filename}.
+@end table
+ETEXI
+
HXCOMM This is the last statement. Insert new options before this line!
STEXI
@end table
--
1.7.7.6