forked from SLFO-pool/xen
145 lines
5.4 KiB
Diff
145 lines
5.4 KiB
Diff
From: Olaf Hering <olaf@aepfle.de>
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Date: Thu, 7 Jan 2021 15:58:30 +0100
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Subject: libxc sr LIBXL_HAVE_DOMAIN_SUSPEND_PROPS
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tools: adjust libxl_domain_suspend to receive a struct props
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Upcoming changes will pass more knobs down to xc_domain_save.
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Adjust the libxl_domain_suspend API to allow easy adding of additional knobs.
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No change in behavior intented.
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Signed-off-by: Olaf Hering <olaf@aepfle.de>
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Acked-by: Christian Lindig <christian.lindig@citrix.com>
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---
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tools/include/libxl.h | 26 +++++++++++++++++++++++---
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tools/libs/light/libxl_domain.c | 7 ++++---
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tools/xl/xl_migrate.c | 9 ++++++---
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tools/xl/xl_saverestore.c | 3 ++-
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4 files changed, 35 insertions(+), 10 deletions(-)
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--- a/tools/include/libxl.h
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+++ b/tools/include/libxl.h
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@@ -1850,13 +1850,28 @@ static inline int libxl_retrieve_domain_
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libxl_retrieve_domain_configuration_0x041200
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#endif
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-int libxl_domain_suspend(libxl_ctx *ctx, uint32_t domid, int fd,
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- int flags, /* LIBXL_SUSPEND_* */
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- const libxl_asyncop_how *ao_how)
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- LIBXL_EXTERNAL_CALLERS_ONLY;
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+/*
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+ * LIBXL_HAVE_DOMAIN_SUSPEND_PROPS indicates that the
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+ * libxl_domain_suspend_props() function takes a props struct.
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+ */
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+#define LIBXL_HAVE_DOMAIN_SUSPEND_PROPS 1
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+
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+typedef struct {
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+ uint32_t flags; /* LIBXL_SUSPEND_* */
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+} libxl_domain_suspend_suse_properties;
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#define LIBXL_SUSPEND_DEBUG 1
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#define LIBXL_SUSPEND_LIVE 2
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+#define LIBXL_HAVE_DOMAIN_SUSPEND_SUSE
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+int libxl_domain_suspend_suse(libxl_ctx *ctx, uint32_t domid, int fd,
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+ const libxl_domain_suspend_suse_properties *props, /* optional */
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+ const libxl_asyncop_how *ao_how)
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+ LIBXL_EXTERNAL_CALLERS_ONLY;
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+
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+int libxl_domain_suspend(libxl_ctx *ctx, uint32_t domid, int fd, int flags,
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+ const libxl_asyncop_how *ao_how)
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+ LIBXL_EXTERNAL_CALLERS_ONLY;
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+
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/*
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* Only suspend domain, do not save its state to file, do not destroy it.
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* Suspended domain can be resumed with libxl_domain_resume()
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--- a/tools/libs/light/libxl_domain.c
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+++ b/tools/libs/light/libxl_domain.c
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@@ -502,7 +502,8 @@ static void domain_suspend_cb(libxl__egc
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}
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-int libxl_domain_suspend(libxl_ctx *ctx, uint32_t domid, int fd, int flags,
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+static int do_libxl_domain_suspend(libxl_ctx *ctx, uint32_t domid, int fd,
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+ const libxl_domain_suspend_suse_properties *props,
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const libxl_asyncop_how *ao_how)
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{
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AO_CREATE(ctx, domid, ao_how);
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@@ -523,8 +524,8 @@ int libxl_domain_suspend(libxl_ctx *ctx,
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dss->domid = domid;
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dss->fd = fd;
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dss->type = type;
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- dss->live = flags & LIBXL_SUSPEND_LIVE;
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- dss->debug = flags & LIBXL_SUSPEND_DEBUG;
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+ dss->live = props->flags & LIBXL_SUSPEND_LIVE;
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+ dss->debug = props->flags & LIBXL_SUSPEND_DEBUG;
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dss->checkpointed_stream = LIBXL_CHECKPOINTED_STREAM_NONE;
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rc = libxl__fd_flags_modify_save(gc, dss->fd,
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@@ -539,6 +540,21 @@ int libxl_domain_suspend(libxl_ctx *ctx,
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return AO_CREATE_FAIL(rc);
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}
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+int libxl_domain_suspend_suse(libxl_ctx *ctx, uint32_t domid, int fd,
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+ const libxl_domain_suspend_suse_properties *props,
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+ const libxl_asyncop_how *ao_how)
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+{
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+ return do_libxl_domain_suspend(ctx, domid, fd, props, ao_how);
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+}
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+
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+int libxl_domain_suspend(libxl_ctx *ctx, uint32_t domid, int fd, int flags,
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+ const libxl_asyncop_how *ao_how)
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+{
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+ libxl_domain_suspend_suse_properties props = { .flags = flags };
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+
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+ return do_libxl_domain_suspend(ctx, domid, fd, &props, ao_how);
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+}
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+
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static void domain_suspend_empty_cb(libxl__egc *egc,
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libxl__domain_suspend_state *dss, int rc)
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{
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--- a/tools/xl/xl_migrate.c
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+++ b/tools/xl/xl_migrate.c
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@@ -186,7 +186,10 @@ static void migrate_domain(uint32_t domi
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char *away_domname;
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char rc_buf;
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uint8_t *config_data;
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- int config_len, flags = LIBXL_SUSPEND_LIVE;
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+ int config_len;
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+ libxl_domain_suspend_suse_properties props = {
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+ .flags = LIBXL_SUSPEND_LIVE,
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+ };
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save_domain_core_begin(domid, preserve_domid, override_config_file,
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&config_data, &config_len);
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@@ -205,8 +208,8 @@ static void migrate_domain(uint32_t domi
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xtl_stdiostream_adjust_flags(logger, XTL_STDIOSTREAM_HIDE_PROGRESS, 0);
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if (debug)
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- flags |= LIBXL_SUSPEND_DEBUG;
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- rc = libxl_domain_suspend(ctx, domid, send_fd, flags, NULL);
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+ props.flags |= LIBXL_SUSPEND_DEBUG;
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+ rc = libxl_domain_suspend_suse(ctx, domid, send_fd, &props, NULL);
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if (rc) {
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fprintf(stderr, "migration sender: libxl_domain_suspend failed"
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" (rc=%d)\n", rc);
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--- a/tools/xl/xl_saverestore.c
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+++ b/tools/xl/xl_saverestore.c
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@@ -130,6 +130,7 @@ static int save_domain(uint32_t domid, i
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int fd;
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uint8_t *config_data;
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int config_len;
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+ libxl_domain_suspend_suse_properties props = {};
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save_domain_core_begin(domid, preserve_domid, override_config_file,
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&config_data, &config_len);
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@@ -146,7 +147,7 @@ static int save_domain(uint32_t domid, i
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save_domain_core_writeconfig(fd, filename, config_data, config_len);
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- int rc = libxl_domain_suspend(ctx, domid, fd, 0, NULL);
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+ int rc = libxl_domain_suspend_suse(ctx, domid, fd, &props, NULL);
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close(fd);
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if (rc < 0) {
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