Move libxlSaveImageOpen from libxl_driver to libxl_domain for
use by other libxl modules. For consistency, rename to
libxlDomainSaveImageOpen.
Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
---
src/libxl/libxl_domain.c | 76 +++++++++++++++++++++++++++++++++++++++++++++
src/libxl/libxl_domain.h | 8 +++++
src/libxl/libxl_driver.c | 80 +++---------------------------------------------
3 files changed, 88 insertions(+), 76 deletions(-)
diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
index b83d1fa..109a4e2 100644
--- a/src/libxl/libxl_domain.c
+++ b/src/libxl/libxl_domain.c
@@ -23,6 +23,8 @@
#include <config.h>
+#include <fcntl.h>
+
#include "libxl_domain.h"
#include "viralloc.h"
@@ -555,3 +557,77 @@ libxlDomainManagedSavePath(libxlDriverPrivatePtr driver, virDomainObjPtr vm) {
virObjectUnref(cfg);
return ret;
}
+
+/*
+ * Open a saved image file and initialize domain definition from the header.
+ *
+ * Returns the opened fd on success, -1 on failure.
+ */
+int
+libxlDomainSaveImageOpen(libxlDriverPrivatePtr driver,
+ libxlDriverConfigPtr cfg,
+ const char *from,
+ virDomainDefPtr *ret_def,
+ libxlSavefileHeaderPtr ret_hdr)
+{
+ int fd;
+ virDomainDefPtr def = NULL;
+ libxlSavefileHeader hdr;
+ char *xml = NULL;
+
+ if ((fd = virFileOpenAs(from, O_RDONLY, 0, -1, -1, 0)) < 0) {
+ virReportSystemError(-fd,
+ _("Failed to open domain image file '%s'"), from);
+ goto error;
+ }
+
+ if (saferead(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ "%s", _("failed to read libxl header"));
+ goto error;
+ }
+
+ if (memcmp(hdr.magic, LIBXL_SAVE_MAGIC, sizeof(hdr.magic))) {
+ virReportError(VIR_ERR_INVALID_ARG, "%s", _("image magic is incorrect"));
+ goto error;
+ }
+
+ if (hdr.version > LIBXL_SAVE_VERSION) {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("image version is not supported (%d > %d)"),
+ hdr.version, LIBXL_SAVE_VERSION);
+ goto error;
+ }
+
+ if (hdr.xmlLen <= 0) {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("invalid XML length: %d"), hdr.xmlLen);
+ goto error;
+ }
+
+ if (VIR_ALLOC_N(xml, hdr.xmlLen) < 0)
+ goto error;
+
+ if (saferead(fd, xml, hdr.xmlLen) != hdr.xmlLen) {
+ virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("failed to read XML"));
+ goto error;
+ }
+
+ if (!(def = virDomainDefParseString(xml, cfg->caps, driver->xmlopt,
+ 1 << VIR_DOMAIN_VIRT_XEN,
+ VIR_DOMAIN_XML_INACTIVE)))
+ goto error;
+
+ VIR_FREE(xml);
+
+ *ret_def = def;
+ *ret_hdr = hdr;
+
+ return fd;
+
+error:
+ VIR_FREE(xml);
+ virDomainDefFree(def);
+ VIR_FORCE_CLOSE(fd);
+ return -1;
+}
diff --git a/src/libxl/libxl_domain.h b/src/libxl/libxl_domain.h
index 5558009..3c1f5c0 100644
--- a/src/libxl/libxl_domain.h
+++ b/src/libxl/libxl_domain.h
@@ -99,4 +99,12 @@ char *
libxlDomainManagedSavePath(libxlDriverPrivatePtr driver,
virDomainObjPtr vm);
+int
+libxlDomainSaveImageOpen(libxlDriverPrivatePtr driver,
+ libxlDriverConfigPtr cfg,
+ const char *from,
+ virDomainDefPtr *ret_def,
+ libxlSavefileHeaderPtr ret_hdr)
+ ATTRIBUTE_NONNULL(4) ATTRIBUTE_NONNULL(5);
+
#endif /* LIBXL_DOMAIN_H */
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
index ef623d5..a2e982c 100644
--- a/src/libxl/libxl_driver.c
+++ b/src/libxl/libxl_driver.c
@@ -161,78 +161,6 @@ cleanup:
return ret;
}
-/*
- * This internal function expects the driver lock to already be held on
- * entry.
- */
-static int ATTRIBUTE_NONNULL(4) ATTRIBUTE_NONNULL(5)
-libxlSaveImageOpen(libxlDriverPrivatePtr driver,
- libxlDriverConfigPtr cfg,
- const char *from,
- virDomainDefPtr *ret_def,
- libxlSavefileHeaderPtr ret_hdr)
-{
- int fd;
- virDomainDefPtr def = NULL;
- libxlSavefileHeader hdr;
- char *xml = NULL;
-
- if ((fd = virFileOpenAs(from, O_RDONLY, 0, -1, -1, 0)) < 0) {
- virReportSystemError(-fd,
- _("Failed to open domain image file '%s'"), from);
- goto error;
- }
-
- if (saferead(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) {
- virReportError(VIR_ERR_OPERATION_FAILED,
- "%s", _("failed to read libxl header"));
- goto error;
- }
-
- if (memcmp(hdr.magic, LIBXL_SAVE_MAGIC, sizeof(hdr.magic))) {
- virReportError(VIR_ERR_INVALID_ARG, "%s", _("image magic is incorrect"));
- goto error;
- }
-
- if (hdr.version > LIBXL_SAVE_VERSION) {
- virReportError(VIR_ERR_OPERATION_FAILED,
- _("image version is not supported (%d > %d)"),
- hdr.version, LIBXL_SAVE_VERSION);
- goto error;
- }
-
- if (hdr.xmlLen <= 0) {
- virReportError(VIR_ERR_OPERATION_FAILED,
- _("invalid XML length: %d"), hdr.xmlLen);
- goto error;
- }
-
- if (VIR_ALLOC_N(xml, hdr.xmlLen) < 0)
- goto error;
-
- if (saferead(fd, xml, hdr.xmlLen) != hdr.xmlLen) {
- virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("failed to read XML"));
- goto error;
- }
-
- if (!(def = virDomainDefParseString(xml, cfg->caps, driver->xmlopt,
- 1 << VIR_DOMAIN_VIRT_XEN,
- VIR_DOMAIN_XML_INACTIVE)))
- goto error;
-
- VIR_FREE(xml);
-
- *ret_def = def;
- *ret_hdr = hdr;
-
- return fd;
-
-error:
- VIR_FREE(xml);
- virDomainDefFree(def);
- VIR_FORCE_CLOSE(fd);
- return -1;
-}
/*
* Core dump domain to default dump path.
@@ -700,9 +628,9 @@ libxlVmStart(libxlDriverPrivatePtr driver, virDomainObjPtr vm,
if (virFileExists(managed_save_path)) {
- managed_save_fd = libxlSaveImageOpen(driver, cfg,
- managed_save_path,
- &def, &hdr);
+ managed_save_fd = libxlDomainSaveImageOpen(driver, cfg,
+ managed_save_path,
+ &def, &hdr);
if (managed_save_fd < 0)
goto endjob;
@@ -2100,7 +2028,7 @@ libxlDomainRestoreFlags(virConnectPtr conn, const char *from,
return -1;
}
- fd = libxlSaveImageOpen(driver, cfg, from, &def, &hdr);
+ fd = libxlDomainSaveImageOpen(driver, cfg, from, &def, &hdr);
if (fd < 0)
goto cleanup_unlock;
--
1.8.1.4
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