Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 00/10] Add a virt-builder-repository tool
Hi all,
Here is an updated version of that patch series.
Diff to v5:
* Apply Pino's comments
* Fix indentation issues
* Add a default value for arch in builder/index_parser.ml if template
is set
* Improved new images filtering: don't process image that didn't
change. This has been uncovered by introduction of --no-compression
Cédric Bosdonnat (10):
lib/osinfo.c: Extract xml processing into a callback
lib: extract osinfo DB traversing API
mllib: ocaml wrapper for lib/osinfo
builder: rename docs test script
builder: add a template parameter to get_index
builder: add Index.write_entry function
dib: move do_cp to mllib.Commun_utils
mllib: add do_mv helper function to Common_utils
mllib: add XPath helper xpath_get_nodes()
Add a virt-builder-repository tool
.gitignore | 4 +
builder/Makefile.am | 124 ++++-
builder/builder.ml | 2 +-
builder/index.mli | 3 +
builder/index_parser.ml | 80 ++-
builder/index_parser.mli | 8 +-
builder/index_parser_tests.ml | 129 +++++
builder/repository_main.ml | 570 +++++++++++++++++++++
.../{test-virt-builder-docs.sh => test-docs.sh} | 2 +
builder/virt-builder-repository.pod | 209 ++++++++
dib/utils.ml | 4 -
lib/Makefile.am | 2 +
lib/osinfo-iso.c | 462 +++++++++++++++++
lib/osinfo.c | 489 ++----------------
lib/osinfo.h | 27 +
mllib/Makefile.am | 11 +-
mllib/common_utils.ml | 11 +
mllib/common_utils.mli | 6 +
mllib/osinfo-c.c | 103 ++++
mllib/osinfo.ml | 26 +
mllib/osinfo.mli | 31 ++
mllib/xpath_helpers.ml | 9 +
mllib/xpath_helpers.mli | 4 +
23 files changed, 1859 insertions(+), 457 deletions(-)
create mode 100644 builder/index_parser_tests.ml
create mode 100644 builder/repository_main.ml
rename builder/{test-virt-builder-docs.sh => test-docs.sh} (93%)
create mode 100644 builder/virt-builder-repository.pod
create mode 100644 lib/osinfo-iso.c
create mode 100644 lib/osinfo.h
create mode 100644 mllib/osinfo-c.c
create mode 100644 mllib/osinfo.ml
create mode 100644 mllib/osinfo.mli
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 01/10] lib/osinfo.c: Extract xml processing into a callback
In order to further reuse the osinfo database parsing in OCAML, this
commit extracts the XML processing for the distro ISOs and places it
into a newly created callback.
This will later help other code to traverse the osinfo DB files and
let them extract what they need from them.
---
lib/osinfo.c | 80 +++++++++++++++++++++++++++++-------------------------------
1 file changed, 39 insertions(+), 41 deletions(-)
diff --git a/lib/osinfo.c b/lib/osinfo.c
index ea2a7659a..3514585c7 100644
--- a/lib/osinfo.c
+++ b/lib/osinfo.c
@@ -52,6 +52,7 @@
#include <string.h>
#include <unistd.h>
#include <dirent.h>
+#include <errno.h>
#include <assert.h>
#include <sys/types.h>
#include <libintl.h>
@@ -71,10 +72,11 @@ gl_lock_define_initialized (static, osinfo_db_lock);
static ssize_t osinfo_db_size = 0; /* 0 = unread, -1 = error, >= 1 =
#records */
static struct osinfo *osinfo_db = NULL;
-static int read_osinfo_db (guestfs_h *g);
-static void free_osinfo_db_entry (struct osinfo *);
-
#define XMLSTREQ(a,b) (xmlStrEqual((a),(b)) == 1)
+typedef int (*read_osinfo_db_callback) (guestfs_h *g, const char *path, void
*opaque);
+
+static int read_osinfo_db (guestfs_h *g, read_osinfo_db_callback callback, void
*opaque);
+static void free_osinfo_db_entry (struct osinfo *);
/* Given one or more fields from the header of a CD/DVD/ISO, look up
* the media in the libosinfo database and return our best guess for
@@ -87,14 +89,24 @@ static void free_osinfo_db_entry (struct osinfo *);
*/
int
guestfs_int_osinfo_map (guestfs_h *g, const struct guestfs_isoinfo *isoinfo,
- const struct osinfo **osinfo_ret)
+ const struct osinfo **osinfo_ret)
{
size_t i;
/* We only need to lock the database when reading it for the first time. */
gl_lock_lock (osinfo_db_lock);
if (osinfo_db_size == 0) {
- if (read_osinfo_db (g) == -1) {
+ if (read_osinfo_db (g, read_osinfo_db_xml, NULL) == -1) {
+ /* Fatal error: free any database entries which have been read, and
+ * mark the database as having a permanent error.
+ */
+ if (osinfo_db_size > 0) {
+ for (i = 0; i < (size_t) osinfo_db_size; ++i)
+ free_osinfo_db_entry (&osinfo_db[i]);
+ }
+ free (osinfo_db);
+ osinfo_db = NULL;
+ osinfo_db_size = -1;
gl_lock_unlock (osinfo_db_lock);
return -1;
}
@@ -156,19 +168,16 @@ guestfs_int_osinfo_map (guestfs_h *g, const struct
guestfs_isoinfo *isoinfo,
* Try to use the shared osinfo database layout (and location) first:
* https://gitlab.com/libosinfo/libosinfo/blob/master/docs/database-layout.txt
*/
-static int read_osinfo_db_xml (guestfs_h *g, const char *filename);
-
-static int read_osinfo_db_flat (guestfs_h *g, const char *directory);
-static int read_osinfo_db_three_levels (guestfs_h *g, const char *directory);
-static int read_osinfo_db_directory (guestfs_h *g, const char *directory);
+static int read_osinfo_db_xml (guestfs_h *g, const char *pathname, void *data);
+static int read_osinfo_db_flat (guestfs_h *g, const char *directory,
read_osinfo_db_callback callback, void *opaque);
+static int read_osinfo_db_three_levels (guestfs_h *g, const char *directory,
read_osinfo_db_callback callback, void *opaque);
+static int read_osinfo_db_directory (guestfs_h *g, const char *directory,
read_osinfo_db_callback callback, void *opaque);
static int
-read_osinfo_db (guestfs_h *g)
+read_osinfo_db (guestfs_h *g,
+ read_osinfo_db_callback callback, void *opaque)
{
int r;
- size_t i;
-
- assert (osinfo_db_size == 0);
/* (1) Try the shared osinfo directory, using either the
* $OSINFO_SYSTEM_DIR envvar or its default value.
@@ -181,59 +190,47 @@ read_osinfo_db (guestfs_h *g)
if (path == NULL)
path = "/usr/share/osinfo";
os_path = safe_asprintf (g, "%s/os", path);
- r = read_osinfo_db_three_levels (g, os_path);
+ r = read_osinfo_db_three_levels (g, os_path, callback, opaque);
}
if (r == -1)
- goto error;
+ return -1;
else if (r == 1)
return 0;
/* (2) Try the libosinfo directory, using the newer three-directory
* layout ($LIBOSINFO_DB_PATH / "os" / $group-ID / [file.xml]).
*/
- r = read_osinfo_db_three_levels (g, LIBOSINFO_DB_PATH "/os");
+ r = read_osinfo_db_three_levels (g, LIBOSINFO_DB_PATH "/os",
callback, opaque);
if (r == -1)
- goto error;
+ return -1;
else if (r == 1)
return 0;
/* (3) Try the libosinfo directory, using the old flat directory
* layout ($LIBOSINFO_DB_PATH / "oses" / [file.xml]).
*/
- r = read_osinfo_db_flat (g, LIBOSINFO_DB_PATH "/oses");
+ r = read_osinfo_db_flat (g, LIBOSINFO_DB_PATH "/oses", callback,
opaque);
if (r == -1)
- goto error;
+ return -1;
else if (r == 1)
return 0;
/* Nothing found. */
return 0;
-
- error:
- /* Fatal error: free any database entries which have been read, and
- * mark the database as having a permanent error.
- */
- if (osinfo_db_size > 0) {
- for (i = 0; i < (size_t) osinfo_db_size; ++i)
- free_osinfo_db_entry (&osinfo_db[i]);
- }
- free (osinfo_db);
- osinfo_db = NULL;
- osinfo_db_size = -1;
-
- return -1;
}
static int
-read_osinfo_db_flat (guestfs_h *g, const char *directory)
+read_osinfo_db_flat (guestfs_h *g, const char *directory,
+ read_osinfo_db_callback callback, void *opaque)
{
debug (g, "osinfo: loading flat database from %s", directory);
- return read_osinfo_db_directory (g, directory);
+ return read_osinfo_db_directory (g, directory, callback, opaque);
}
static int
-read_osinfo_db_three_levels (guestfs_h *g, const char *directory)
+read_osinfo_db_three_levels (guestfs_h *g, const char *directory,
+ read_osinfo_db_callback callback, void *opaque)
{
DIR *dir;
int r;
@@ -259,7 +256,7 @@ read_osinfo_db_three_levels (guestfs_h *g, const char
*directory)
/* Iterate only on directories. */
if (stat (pathname, &sb) == 0 && S_ISDIR (sb.st_mode)) {
- r = read_osinfo_db_directory (g, pathname);
+ r = read_osinfo_db_directory (g, pathname, callback, opaque);
if (r == -1)
goto error;
}
@@ -289,7 +286,8 @@ read_osinfo_db_three_levels (guestfs_h *g, const char
*directory)
}
static int
-read_osinfo_db_directory (guestfs_h *g, const char *directory)
+read_osinfo_db_directory (guestfs_h *g, const char *directory,
+ read_osinfo_db_callback callback, void *opaque)
{
DIR *dir;
int r;
@@ -311,7 +309,7 @@ read_osinfo_db_directory (guestfs_h *g, const char
*directory)
CLEANUP_FREE char *pathname = NULL;
pathname = safe_asprintf (g, "%s/%s", directory, d->d_name);
- r = read_osinfo_db_xml (g, pathname);
+ r = callback (g, pathname, opaque);
if (r == -1)
goto error;
}
@@ -348,7 +346,7 @@ static int read_os_node (guestfs_h *g, xmlXPathContextPtr
xpathCtx, xmlNodePtr o
* Only memory allocation failures are fatal errors here.
*/
static int
-read_osinfo_db_xml (guestfs_h *g, const char *pathname)
+read_osinfo_db_xml (guestfs_h *g, const char *pathname, void *opaque)
{
CLEANUP_XMLFREEDOC xmlDocPtr doc = NULL;
CLEANUP_XMLXPATHFREECONTEXT xmlXPathContextPtr xpathCtx = NULL;
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 02/10] lib: extract osinfo DB traversing API
Split lib/osinfo.c to provide an API for other pieces of code (namely
mllib) to reuse it. The ISO-related processing is thus moved into a
lib/osinfo-iso.c file.
---
lib/Makefile.am | 2 +
lib/osinfo-iso.c | 462 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
lib/osinfo.c | 420 +-------------------------------------------------
lib/osinfo.h | 27 ++++
4 files changed, 493 insertions(+), 418 deletions(-)
create mode 100644 lib/osinfo-iso.c
create mode 100644 lib/osinfo.h
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 063706f8f..dd5f9fb92 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -112,7 +112,9 @@ libguestfs_la_SOURCES = \
lpj.c \
match.c \
mountable.c \
+ osinfo.h \
osinfo.c \
+ osinfo-iso.c \
private-data.c \
proto.c \
qemu.c \
diff --git a/lib/osinfo-iso.c b/lib/osinfo-iso.c
new file mode 100644
index 000000000..059d72def
--- /dev/null
+++ b/lib/osinfo-iso.c
@@ -0,0 +1,462 @@
+/* libguestfs
+ * Copyright (C) 2012 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* Read libosinfo XML files to parse out just the
+ * os/media/iso/system-id and os/media/iso/volume-id fields, which we
+ * can then use to map install media to operating systems.
+ *
+ * Note some assumptions here:
+ *
+ * (1) We have to do some translation of the distro names and versions
+ * stored in the libosinfo files and the standard names returned by
+ * libguestfs.
+ *
+ * (2) Media detection is only part of the story. We may still need
+ * to inspect inside the image.
+ *
+ * (3) We only read the XML database files (at most) once per process,
+ * and keep them cached. They are only read at all if someone tries
+ * to inspect a CD/DVD/ISO.
+ *
+ * XXX Currently the database is not freed when the program exits /
+ * library is unloaded, although we should probably do that.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <libintl.h>
+#include <sys/stat.h>
+
+#include <libxml/parser.h>
+#include <libxml/xpath.h>
+
+#include "ignore-value.h"
+#include "glthread/lock.h"
+#include "c-ctype.h"
+
+#include "guestfs.h"
+#include "guestfs-internal.h"
+
+#include "osinfo.h"
+
+gl_lock_define_initialized (static, osinfo_db_lock);
+static ssize_t osinfo_db_size = 0; /* 0 = unread, -1 = error, >= 1 =
#records */
+static struct osinfo *osinfo_db = NULL;
+
+static void free_osinfo_db_entry (struct osinfo *);
+
+#define XMLSTREQ(a,b) (xmlStrEqual((a),(b)) == 1)
+
+static int read_osinfo_db_xml (guestfs_h *g, const char *pathname, void *data);
+
+/* Given one or more fields from the header of a CD/DVD/ISO, look up
+ * the media in the libosinfo database and return our best guess for
+ * the operating system.
+ *
+ * This returns:
+ * -1 => a fatal error ('error' has been called, caller must not
ignore it)
+ * 0 => could not locate the OS
+ * 1 => matching OS found, the osinfo_ret pointer has been filled in
+ */
+int
+guestfs_int_osinfo_map (guestfs_h *g, const struct guestfs_isoinfo *isoinfo,
+ const struct osinfo **osinfo_ret)
+{
+ size_t i;
+
+ /* We only need to lock the database when reading it for the first time. */
+ gl_lock_lock (osinfo_db_lock);
+ if (osinfo_db_size == 0) {
+ if (read_osinfo_db (g, read_osinfo_db_xml, NULL) == -1) {
+ /* Fatal error: free any database entries which have been read, and
+ * mark the database as having a permanent error.
+ */
+ if (osinfo_db_size > 0) {
+ for (i = 0; i < (size_t) osinfo_db_size; ++i)
+ free_osinfo_db_entry (&osinfo_db[i]);
+ }
+ free (osinfo_db);
+ osinfo_db = NULL;
+ osinfo_db_size = -1;
+ gl_lock_unlock (osinfo_db_lock);
+ return -1;
+ }
+ }
+ gl_lock_unlock (osinfo_db_lock);
+
+ if (osinfo_db_size <= 0)
+ return 0;
+
+ /* Look in the database to see if we can find a match. */
+ for (i = 0; i < (size_t) osinfo_db_size; ++i) {
+ if (osinfo_db[i].re_system_id) {
+ if (!isoinfo->iso_system_id ||
+ !match (g, isoinfo->iso_system_id, osinfo_db[i].re_system_id))
+ continue;
+ }
+
+ if (osinfo_db[i].re_volume_id) {
+ if (!isoinfo->iso_volume_id ||
+ !match (g, isoinfo->iso_volume_id, osinfo_db[i].re_volume_id))
+ continue;
+ }
+
+ if (osinfo_db[i].re_publisher_id) {
+ if (!isoinfo->iso_publisher_id ||
+ !match (g, isoinfo->iso_publisher_id,
osinfo_db[i].re_publisher_id))
+ continue;
+ }
+
+ if (osinfo_db[i].re_application_id) {
+ if (!isoinfo->iso_application_id ||
+ !match (g, isoinfo->iso_application_id,
osinfo_db[i].re_application_id))
+ continue;
+ }
+
+ debug (g, "osinfo: mapped disk to database entry %zu", i);
+
+ if (osinfo_ret)
+ *osinfo_ret = &osinfo_db[i];
+ return 1;
+ }
+
+ debug (g, "osinfo: no mapping found");
+
+ return 0;
+}
+
+static int read_iso_node (guestfs_h *g, xmlNodePtr iso_node, struct osinfo
*osinfo);
+static int read_media_node (guestfs_h *g, xmlXPathContextPtr xpathCtx,
xmlNodePtr media_node, struct osinfo *osinfo);
+static int read_os_node (guestfs_h *g, xmlXPathContextPtr xpathCtx, xmlNodePtr
os_node, struct osinfo *osinfo);
+
+/* Read a single XML file from pathname (which is a full path).
+ * Only memory allocation failures are fatal errors here.
+ */
+static int
+read_osinfo_db_xml (guestfs_h *g, const char *pathname, void *opaque)
+{
+ CLEANUP_XMLFREEDOC xmlDocPtr doc = NULL;
+ CLEANUP_XMLXPATHFREECONTEXT xmlXPathContextPtr xpathCtx = NULL;
+ CLEANUP_XMLXPATHFREEOBJECT xmlXPathObjectPtr xpathObj = NULL;
+ xmlNodeSetPtr nodes;
+ xmlNodePtr iso_node, media_node, os_node;
+ struct osinfo *osinfo;
+ size_t i;
+
+ doc = xmlReadFile (pathname, NULL, XML_PARSE_NONET);
+ if (doc == NULL) {
+ debug (g, "osinfo: unable to parse XML file %s", pathname);
+ return 0;
+ }
+
+ xpathCtx = xmlXPathNewContext (doc);
+ if (xpathCtx == NULL) {
+ error (g, _("osinfo: unable to create new XPath context"));
+ return -1;
+ }
+
+ /* Get all <iso> nodes at any depth, then use the parent pointers in
+ * order to work back up the tree.
+ */
+ xpathObj = xmlXPathEvalExpression (BAD_CAST
"/libosinfo/os/media/iso",
+ xpathCtx);
+ if (xpathObj == NULL) {
+ error (g, _("osinfo: %s: unable to evaluate XPath expression"),
+ pathname);
+ return -1;
+ }
+
+ nodes = xpathObj->nodesetval;
+
+ if (nodes != NULL) {
+ for (i = 0; i < (size_t) nodes->nodeNr; ++i) {
+ iso_node = nodes->nodeTab[i];
+ assert (iso_node != NULL);
+ assert (STREQ ((const char *) iso_node->name, "iso"));
+ assert (iso_node->type == XML_ELEMENT_NODE);
+
+ media_node = iso_node->parent;
+ assert (media_node != NULL);
+ assert (STREQ ((const char *) media_node->name, "media"));
+ assert (media_node->type == XML_ELEMENT_NODE);
+
+ os_node = media_node->parent;
+ assert (os_node != NULL);
+ assert (STREQ ((const char *) os_node->name, "os"));
+ assert (os_node->type == XML_ELEMENT_NODE);
+
+ /* Allocate an osinfo record. */
+ osinfo_db_size++;
+ osinfo_db = safe_realloc (g, osinfo_db,
+ sizeof (struct osinfo) * osinfo_db_size);
+ osinfo = &osinfo_db[osinfo_db_size-1];
+ memset (osinfo, 0, sizeof *osinfo);
+
+ /* Read XML fields into the new osinfo record. */
+ if (read_iso_node (g, iso_node, osinfo) == -1 ||
+ read_media_node (g, xpathCtx, media_node, osinfo) == -1 ||
+ read_os_node (g, xpathCtx, os_node, osinfo) == -1) {
+ free_osinfo_db_entry (osinfo);
+ osinfo_db_size--;
+ return -1;
+ }
+
+#if 0
+ debug (g, "osinfo: %s: %s%s%s%s=> arch %s live %s installer %s
product %s type %d distro %d version %d.%d",
+ pathname,
+ osinfo->re_system_id ? "<system-id/> " :
"",
+ osinfo->re_volume_id ? "<volume-id/> " :
"",
+ osinfo->re_publisher_id ? "<publisher-id/> " :
"",
+ osinfo->re_application_id ? "<application-id/>
" : "",
+ osinfo->arch ? osinfo->arch : "(none)",
+ osinfo->is_live_disk ? "true" : "false",
+ osinfo->is_installer ? "true" : "false",
+ osinfo->product_name ? osinfo->product_name :
"(none)",
+ (int) osinfo->type, (int) osinfo->distro,
+ osinfo->major_version, osinfo->minor_version);
+#endif
+ }
+ }
+
+ return 0;
+}
+
+static int compile_re (guestfs_h *g, xmlNodePtr child, pcre **re);
+
+/* Read the regular expressions under the <iso> node. libosinfo
+ * itself uses the glib function 'g_regex_match_simple'. That appears
+ * to implement PCRE, however I have not checked in detail.
+ */
+static int
+read_iso_node (guestfs_h *g, xmlNodePtr iso_node, struct osinfo *osinfo)
+{
+ xmlNodePtr child;
+
+ for (child = iso_node->children; child; child = child->next) {
+ if (STREQ ((const char *) child->name, "system-id")) {
+ if (compile_re (g, child, &osinfo->re_system_id) == -1)
+ return -1;
+ }
+ else if (STREQ ((const char *) child->name, "volume-id")) {
+ if (compile_re (g, child, &osinfo->re_volume_id) == -1)
+ return -1;
+ }
+ else if (STREQ ((const char *) child->name, "publisher-id")) {
+ if (compile_re (g, child, &osinfo->re_publisher_id) == -1)
+ return -1;
+ }
+ else if (STREQ ((const char *) child->name, "application-id"))
{
+ if (compile_re (g, child, &osinfo->re_application_id) == -1)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int
+compile_re (guestfs_h *g, xmlNodePtr node, pcre **re)
+{
+ const char *err;
+ int offset;
+ CLEANUP_FREE char *content = (char *) xmlNodeGetContent (node);
+
+ if (content) {
+ *re = pcre_compile (content, 0, &err, &offset, NULL);
+ if (*re == NULL)
+ debug (g, "osinfo: could not parse regular expression '%s':
%s (ignored)",
+ content, err);
+ }
+
+ return 0;
+}
+
+/* Read the attributes of the <media/> node. */
+static int
+read_media_node (guestfs_h *g, xmlXPathContextPtr xpathCtx,
+ xmlNodePtr media_node, struct osinfo *osinfo)
+{
+ osinfo->arch = (char *) xmlGetProp (media_node, BAD_CAST
"arch");
+
+ osinfo->is_live_disk = 0; /* If no 'live' attr, defaults to false.
*/
+ {
+ CLEANUP_XMLFREE xmlChar *content = NULL;
+ content = xmlGetProp (media_node, BAD_CAST "live");
+ if (content)
+ osinfo->is_live_disk = XMLSTREQ (content, BAD_CAST "true");
+ }
+
+ osinfo->is_installer = true; /* If no 'installer' attr, defaults
to true. */
+ {
+ CLEANUP_XMLFREE xmlChar *content = NULL;
+ content = xmlGetProp (media_node, BAD_CAST "installer");
+ if (content)
+ osinfo->is_installer = XMLSTREQ (content, BAD_CAST "true");
+ }
+
+ return 0;
+}
+
+static int parse_version (guestfs_h *g, xmlNodePtr node, struct osinfo
*osinfo);
+static int parse_family (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo);
+static int parse_distro (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo);
+
+/* Read some fields under the <os/> node. */
+static int
+read_os_node (guestfs_h *g, xmlXPathContextPtr xpathCtx,
+ xmlNodePtr os_node, struct osinfo *osinfo)
+{
+ xmlNodePtr child;
+
+ for (child = os_node->children; child; child = child->next) {
+ if (STREQ ((const char *) child->name, "name"))
+ osinfo->product_name = (char *) xmlNodeGetContent (child);
+ else if (STREQ ((const char *) child->name, "version")) {
+ if (parse_version (g, child, osinfo) == -1)
+ return -1;
+ }
+ else if (STREQ ((const char *) child->name, "family")) {
+ if (parse_family (g, child, osinfo) == -1)
+ return -1;
+ }
+ else if (STREQ ((const char *) child->name, "distro")) {
+ if (parse_distro (g, child, osinfo) == -1)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int
+parse_version (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo)
+{
+ CLEANUP_FREE char *content = NULL;
+
+ content = (char *) xmlNodeGetContent (node);
+ /* We parse either "X.Y" or "X" as version strings, so
try to parse
+ * only if the first character is a digit.
+ */
+ if (content && c_isdigit (content[0])) {
+ struct version version;
+ const int res = guestfs_int_version_from_x_y_or_x (g, &version,
content);
+ if (res < 0)
+ return -1;
+ else if (res > 0) {
+ osinfo->major_version = version.v_major;
+ osinfo->minor_version = version.v_minor;
+ }
+ }
+
+ return 0;
+}
+
+static int
+parse_family (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo)
+{
+ CLEANUP_FREE char *content = NULL;
+
+ osinfo->type = OS_TYPE_UNKNOWN;
+
+ content = (char *) xmlNodeGetContent (node);
+ if (content) {
+ if (STREQ (content, "linux"))
+ osinfo->type = OS_TYPE_LINUX;
+ else if (STRPREFIX (content, "win"))
+ osinfo->type = OS_TYPE_WINDOWS;
+ else if (STREQ (content, "freebsd"))
+ osinfo->type = OS_TYPE_FREEBSD;
+ else if (STREQ (content, "netbsd"))
+ osinfo->type = OS_TYPE_NETBSD;
+ else if (STREQ (content, "msdos"))
+ osinfo->type = OS_TYPE_DOS;
+ else if (STREQ (content, "openbsd"))
+ osinfo->type = OS_TYPE_OPENBSD;
+ else
+ debug (g, "osinfo: warning: unknown <family>
'%s'", content);
+ }
+
+ return 0;
+}
+
+static int
+parse_distro (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo)
+{
+ CLEANUP_FREE char *content = NULL;
+
+ osinfo->distro = OS_DISTRO_UNKNOWN;
+
+ content = (char *) xmlNodeGetContent (node);
+ if (content) {
+ if (STREQ (content, "altlinux"))
+ osinfo->distro = OS_DISTRO_ALTLINUX;
+ else if (STREQ (content, "centos"))
+ osinfo->distro = OS_DISTRO_CENTOS;
+ else if (STREQ (content, "debian"))
+ osinfo->distro = OS_DISTRO_DEBIAN;
+ else if (STREQ (content, "fedora"))
+ osinfo->distro = OS_DISTRO_FEDORA;
+ else if (STREQ (content, "freebsd"))
+ osinfo->distro = OS_DISTRO_FREEBSD;
+ else if (STREQ (content, "mageia"))
+ osinfo->distro = OS_DISTRO_MAGEIA;
+ else if (STREQ (content, "mandriva"))
+ osinfo->distro = OS_DISTRO_MANDRIVA;
+ else if (STREQ (content, "netbsd"))
+ osinfo->distro = OS_DISTRO_NETBSD;
+ else if (STREQ (content, "openbsd"))
+ osinfo->distro = OS_DISTRO_OPENBSD;
+ else if (STREQ (content, "opensuse"))
+ osinfo->distro = OS_DISTRO_OPENSUSE;
+ else if (STREQ (content, "rhel"))
+ osinfo->distro = OS_DISTRO_RHEL;
+ else if (STREQ (content, "sled") || STREQ (content,
"sles"))
+ osinfo->distro = OS_DISTRO_SLES;
+ else if (STREQ (content, "ubuntu"))
+ osinfo->distro = OS_DISTRO_UBUNTU;
+ else if (STRPREFIX (content, "win"))
+ osinfo->distro = OS_DISTRO_WINDOWS;
+ else
+ debug (g, "osinfo: warning: unknown <distro>
'%s'", content);
+ }
+
+ return 0;
+}
+
+static void
+free_osinfo_db_entry (struct osinfo *osinfo)
+{
+ free (osinfo->product_name);
+ free (osinfo->arch);
+
+ if (osinfo->re_system_id)
+ pcre_free (osinfo->re_system_id);
+ if (osinfo->re_volume_id)
+ pcre_free (osinfo->re_volume_id);
+ if (osinfo->re_publisher_id)
+ pcre_free (osinfo->re_publisher_id);
+ if (osinfo->re_application_id)
+ pcre_free (osinfo->re_application_id);
+}
diff --git a/lib/osinfo.c b/lib/osinfo.c
index 3514585c7..5ccb554be 100644
--- a/lib/osinfo.c
+++ b/lib/osinfo.c
@@ -29,20 +29,6 @@
* safe(-ish) since the media identifiers always change for every
* release of an OS. We can easily add support for this if it becomes
* necessary.
- *
- * (3) We have to do some translation of the distro names and versions
- * stored in the libosinfo files and the standard names returned by
- * libguestfs.
- *
- * (4) Media detection is only part of the story. We may still need
- * to inspect inside the image.
- *
- * (5) We only read the XML database files (at most) once per process,
- * and keep them cached. They are only read at all if someone tries
- * to inspect a CD/DVD/ISO.
- *
- * XXX Currently the database is not freed when the program exits /
- * library is unloaded, although we should probably do that.
*/
#include <config.h>
@@ -58,101 +44,14 @@
#include <libintl.h>
#include <sys/stat.h>
-#include <libxml/parser.h>
-#include <libxml/xpath.h>
-
#include "ignore-value.h"
-#include "glthread/lock.h"
#include "c-ctype.h"
#include "guestfs.h"
#include "guestfs-internal.h"
-gl_lock_define_initialized (static, osinfo_db_lock);
-static ssize_t osinfo_db_size = 0; /* 0 = unread, -1 = error, >= 1 =
#records */
-static struct osinfo *osinfo_db = NULL;
-
-#define XMLSTREQ(a,b) (xmlStrEqual((a),(b)) == 1)
-typedef int (*read_osinfo_db_callback) (guestfs_h *g, const char *path, void
*opaque);
-
-static int read_osinfo_db (guestfs_h *g, read_osinfo_db_callback callback, void
*opaque);
-static void free_osinfo_db_entry (struct osinfo *);
-
-/* Given one or more fields from the header of a CD/DVD/ISO, look up
- * the media in the libosinfo database and return our best guess for
- * the operating system.
- *
- * This returns:
- * -1 => a fatal error ('error' has been called, caller must not
ignore it)
- * 0 => could not locate the OS
- * 1 => matching OS found, the osinfo_ret pointer has been filled in
- */
-int
-guestfs_int_osinfo_map (guestfs_h *g, const struct guestfs_isoinfo *isoinfo,
- const struct osinfo **osinfo_ret)
-{
- size_t i;
-
- /* We only need to lock the database when reading it for the first time. */
- gl_lock_lock (osinfo_db_lock);
- if (osinfo_db_size == 0) {
- if (read_osinfo_db (g, read_osinfo_db_xml, NULL) == -1) {
- /* Fatal error: free any database entries which have been read, and
- * mark the database as having a permanent error.
- */
- if (osinfo_db_size > 0) {
- for (i = 0; i < (size_t) osinfo_db_size; ++i)
- free_osinfo_db_entry (&osinfo_db[i]);
- }
- free (osinfo_db);
- osinfo_db = NULL;
- osinfo_db_size = -1;
- gl_lock_unlock (osinfo_db_lock);
- return -1;
- }
- }
- gl_lock_unlock (osinfo_db_lock);
+#include "osinfo.h"
- if (osinfo_db_size <= 0)
- return 0;
-
- /* Look in the database to see if we can find a match. */
- for (i = 0; i < (size_t) osinfo_db_size; ++i) {
- if (osinfo_db[i].re_system_id) {
- if (!isoinfo->iso_system_id ||
- !match (g, isoinfo->iso_system_id, osinfo_db[i].re_system_id))
- continue;
- }
-
- if (osinfo_db[i].re_volume_id) {
- if (!isoinfo->iso_volume_id ||
- !match (g, isoinfo->iso_volume_id, osinfo_db[i].re_volume_id))
- continue;
- }
-
- if (osinfo_db[i].re_publisher_id) {
- if (!isoinfo->iso_publisher_id ||
- !match (g, isoinfo->iso_publisher_id,
osinfo_db[i].re_publisher_id))
- continue;
- }
-
- if (osinfo_db[i].re_application_id) {
- if (!isoinfo->iso_application_id ||
- !match (g, isoinfo->iso_application_id,
osinfo_db[i].re_application_id))
- continue;
- }
-
- debug (g, "osinfo: mapped disk to database entry %zu", i);
-
- if (osinfo_ret)
- *osinfo_ret = &osinfo_db[i];
- return 1;
- }
-
- debug (g, "osinfo: no mapping found");
-
- return 0;
-}
/* Read the libosinfo XML database files. The lock is held while
* this is called.
@@ -168,12 +67,11 @@ guestfs_int_osinfo_map (guestfs_h *g, const struct
guestfs_isoinfo *isoinfo,
* Try to use the shared osinfo database layout (and location) first:
* https://gitlab.com/libosinfo/libosinfo/blob/master/docs/database-layout.txt
*/
-static int read_osinfo_db_xml (guestfs_h *g, const char *pathname, void *data);
static int read_osinfo_db_flat (guestfs_h *g, const char *directory,
read_osinfo_db_callback callback, void *opaque);
static int read_osinfo_db_three_levels (guestfs_h *g, const char *directory,
read_osinfo_db_callback callback, void *opaque);
static int read_osinfo_db_directory (guestfs_h *g, const char *directory,
read_osinfo_db_callback callback, void *opaque);
-static int
+int
read_osinfo_db (guestfs_h *g,
read_osinfo_db_callback callback, void *opaque)
{
@@ -337,317 +235,3 @@ read_osinfo_db_directory (guestfs_h *g, const char
*directory,
return -1;
}
-
-static int read_iso_node (guestfs_h *g, xmlNodePtr iso_node, struct osinfo
*osinfo);
-static int read_media_node (guestfs_h *g, xmlXPathContextPtr xpathCtx,
xmlNodePtr media_node, struct osinfo *osinfo);
-static int read_os_node (guestfs_h *g, xmlXPathContextPtr xpathCtx, xmlNodePtr
os_node, struct osinfo *osinfo);
-
-/* Read a single XML file from pathname (which is a full path).
- * Only memory allocation failures are fatal errors here.
- */
-static int
-read_osinfo_db_xml (guestfs_h *g, const char *pathname, void *opaque)
-{
- CLEANUP_XMLFREEDOC xmlDocPtr doc = NULL;
- CLEANUP_XMLXPATHFREECONTEXT xmlXPathContextPtr xpathCtx = NULL;
- CLEANUP_XMLXPATHFREEOBJECT xmlXPathObjectPtr xpathObj = NULL;
- xmlNodeSetPtr nodes;
- xmlNodePtr iso_node, media_node, os_node;
- struct osinfo *osinfo;
- size_t i;
-
- doc = xmlReadFile (pathname, NULL, XML_PARSE_NONET);
- if (doc == NULL) {
- debug (g, "osinfo: unable to parse XML file %s", pathname);
- return 0;
- }
-
- xpathCtx = xmlXPathNewContext (doc);
- if (xpathCtx == NULL) {
- error (g, _("osinfo: unable to create new XPath context"));
- return -1;
- }
-
- /* Get all <iso> nodes at any depth, then use the parent pointers in
- * order to work back up the tree.
- */
- xpathObj = xmlXPathEvalExpression (BAD_CAST
"/libosinfo/os/media/iso",
- xpathCtx);
- if (xpathObj == NULL) {
- error (g, _("osinfo: %s: unable to evaluate XPath expression"),
- pathname);
- return -1;
- }
-
- nodes = xpathObj->nodesetval;
-
- if (nodes != NULL) {
- for (i = 0; i < (size_t) nodes->nodeNr; ++i) {
- iso_node = nodes->nodeTab[i];
- assert (iso_node != NULL);
- assert (STREQ ((const char *) iso_node->name, "iso"));
- assert (iso_node->type == XML_ELEMENT_NODE);
-
- media_node = iso_node->parent;
- assert (media_node != NULL);
- assert (STREQ ((const char *) media_node->name, "media"));
- assert (media_node->type == XML_ELEMENT_NODE);
-
- os_node = media_node->parent;
- assert (os_node != NULL);
- assert (STREQ ((const char *) os_node->name, "os"));
- assert (os_node->type == XML_ELEMENT_NODE);
-
- /* Allocate an osinfo record. */
- osinfo_db_size++;
- osinfo_db = safe_realloc (g, osinfo_db,
- sizeof (struct osinfo) * osinfo_db_size);
- osinfo = &osinfo_db[osinfo_db_size-1];
- memset (osinfo, 0, sizeof *osinfo);
-
- /* Read XML fields into the new osinfo record. */
- if (read_iso_node (g, iso_node, osinfo) == -1 ||
- read_media_node (g, xpathCtx, media_node, osinfo) == -1 ||
- read_os_node (g, xpathCtx, os_node, osinfo) == -1) {
- free_osinfo_db_entry (osinfo);
- osinfo_db_size--;
- return -1;
- }
-
-#if 0
- debug (g, "osinfo: %s: %s%s%s%s=> arch %s live %s installer %s
product %s type %d distro %d version %d.%d",
- pathname,
- osinfo->re_system_id ? "<system-id/> " :
"",
- osinfo->re_volume_id ? "<volume-id/> " :
"",
- osinfo->re_publisher_id ? "<publisher-id/> " :
"",
- osinfo->re_application_id ? "<application-id/>
" : "",
- osinfo->arch ? osinfo->arch : "(none)",
- osinfo->is_live_disk ? "true" : "false",
- osinfo->is_installer ? "true" : "false",
- osinfo->product_name ? osinfo->product_name :
"(none)",
- (int) osinfo->type, (int) osinfo->distro,
- osinfo->major_version, osinfo->minor_version);
-#endif
- }
- }
-
- return 0;
-}
-
-static int compile_re (guestfs_h *g, xmlNodePtr child, pcre **re);
-
-/* Read the regular expressions under the <iso> node. libosinfo
- * itself uses the glib function 'g_regex_match_simple'. That appears
- * to implement PCRE, however I have not checked in detail.
- */
-static int
-read_iso_node (guestfs_h *g, xmlNodePtr iso_node, struct osinfo *osinfo)
-{
- xmlNodePtr child;
-
- for (child = iso_node->children; child; child = child->next) {
- if (STREQ ((const char *) child->name, "system-id")) {
- if (compile_re (g, child, &osinfo->re_system_id) == -1)
- return -1;
- }
- else if (STREQ ((const char *) child->name, "volume-id")) {
- if (compile_re (g, child, &osinfo->re_volume_id) == -1)
- return -1;
- }
- else if (STREQ ((const char *) child->name, "publisher-id")) {
- if (compile_re (g, child, &osinfo->re_publisher_id) == -1)
- return -1;
- }
- else if (STREQ ((const char *) child->name, "application-id"))
{
- if (compile_re (g, child, &osinfo->re_application_id) == -1)
- return -1;
- }
- }
-
- return 0;
-}
-
-static int
-compile_re (guestfs_h *g, xmlNodePtr node, pcre **re)
-{
- const char *err;
- int offset;
- CLEANUP_FREE char *content = (char *) xmlNodeGetContent (node);
-
- if (content) {
- *re = pcre_compile (content, 0, &err, &offset, NULL);
- if (*re == NULL)
- debug (g, "osinfo: could not parse regular expression '%s':
%s (ignored)",
- content, err);
- }
-
- return 0;
-}
-
-/* Read the attributes of the <media/> node. */
-static int
-read_media_node (guestfs_h *g, xmlXPathContextPtr xpathCtx,
- xmlNodePtr media_node, struct osinfo *osinfo)
-{
- osinfo->arch = (char *) xmlGetProp (media_node, BAD_CAST
"arch");
-
- osinfo->is_live_disk = 0; /* If no 'live' attr, defaults to false.
*/
- {
- CLEANUP_XMLFREE xmlChar *content = NULL;
- content = xmlGetProp (media_node, BAD_CAST "live");
- if (content)
- osinfo->is_live_disk = XMLSTREQ (content, BAD_CAST "true");
- }
-
- osinfo->is_installer = true; /* If no 'installer' attr, defaults
to true. */
- {
- CLEANUP_XMLFREE xmlChar *content = NULL;
- content = xmlGetProp (media_node, BAD_CAST "installer");
- if (content)
- osinfo->is_installer = XMLSTREQ (content, BAD_CAST "true");
- }
-
- return 0;
-}
-
-static int parse_version (guestfs_h *g, xmlNodePtr node, struct osinfo
*osinfo);
-static int parse_family (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo);
-static int parse_distro (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo);
-
-/* Read some fields under the <os/> node. */
-static int
-read_os_node (guestfs_h *g, xmlXPathContextPtr xpathCtx,
- xmlNodePtr os_node, struct osinfo *osinfo)
-{
- xmlNodePtr child;
-
- for (child = os_node->children; child; child = child->next) {
- if (STREQ ((const char *) child->name, "name"))
- osinfo->product_name = (char *) xmlNodeGetContent (child);
- else if (STREQ ((const char *) child->name, "version")) {
- if (parse_version (g, child, osinfo) == -1)
- return -1;
- }
- else if (STREQ ((const char *) child->name, "family")) {
- if (parse_family (g, child, osinfo) == -1)
- return -1;
- }
- else if (STREQ ((const char *) child->name, "distro")) {
- if (parse_distro (g, child, osinfo) == -1)
- return -1;
- }
- }
-
- return 0;
-}
-
-static int
-parse_version (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo)
-{
- CLEANUP_FREE char *content = NULL;
-
- content = (char *) xmlNodeGetContent (node);
- /* We parse either "X.Y" or "X" as version strings, so
try to parse
- * only if the first character is a digit.
- */
- if (content && c_isdigit (content[0])) {
- struct version version;
- const int res = guestfs_int_version_from_x_y_or_x (g, &version,
content);
- if (res < 0)
- return -1;
- else if (res > 0) {
- osinfo->major_version = version.v_major;
- osinfo->minor_version = version.v_minor;
- }
- }
-
- return 0;
-}
-
-static int
-parse_family (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo)
-{
- CLEANUP_FREE char *content = NULL;
-
- osinfo->type = OS_TYPE_UNKNOWN;
-
- content = (char *) xmlNodeGetContent (node);
- if (content) {
- if (STREQ (content, "linux"))
- osinfo->type = OS_TYPE_LINUX;
- else if (STRPREFIX (content, "win"))
- osinfo->type = OS_TYPE_WINDOWS;
- else if (STREQ (content, "freebsd"))
- osinfo->type = OS_TYPE_FREEBSD;
- else if (STREQ (content, "netbsd"))
- osinfo->type = OS_TYPE_NETBSD;
- else if (STREQ (content, "msdos"))
- osinfo->type = OS_TYPE_DOS;
- else if (STREQ (content, "openbsd"))
- osinfo->type = OS_TYPE_OPENBSD;
- else
- debug (g, "osinfo: warning: unknown <family>
'%s'", content);
- }
-
- return 0;
-}
-
-static int
-parse_distro (guestfs_h *g, xmlNodePtr node, struct osinfo *osinfo)
-{
- CLEANUP_FREE char *content = NULL;
-
- osinfo->distro = OS_DISTRO_UNKNOWN;
-
- content = (char *) xmlNodeGetContent (node);
- if (content) {
- if (STREQ (content, "altlinux"))
- osinfo->distro = OS_DISTRO_ALTLINUX;
- else if (STREQ (content, "centos"))
- osinfo->distro = OS_DISTRO_CENTOS;
- else if (STREQ (content, "debian"))
- osinfo->distro = OS_DISTRO_DEBIAN;
- else if (STREQ (content, "fedora"))
- osinfo->distro = OS_DISTRO_FEDORA;
- else if (STREQ (content, "freebsd"))
- osinfo->distro = OS_DISTRO_FREEBSD;
- else if (STREQ (content, "mageia"))
- osinfo->distro = OS_DISTRO_MAGEIA;
- else if (STREQ (content, "mandriva"))
- osinfo->distro = OS_DISTRO_MANDRIVA;
- else if (STREQ (content, "netbsd"))
- osinfo->distro = OS_DISTRO_NETBSD;
- else if (STREQ (content, "openbsd"))
- osinfo->distro = OS_DISTRO_OPENBSD;
- else if (STREQ (content, "opensuse"))
- osinfo->distro = OS_DISTRO_OPENSUSE;
- else if (STREQ (content, "rhel"))
- osinfo->distro = OS_DISTRO_RHEL;
- else if (STREQ (content, "sled") || STREQ (content,
"sles"))
- osinfo->distro = OS_DISTRO_SLES;
- else if (STREQ (content, "ubuntu"))
- osinfo->distro = OS_DISTRO_UBUNTU;
- else if (STRPREFIX (content, "win"))
- osinfo->distro = OS_DISTRO_WINDOWS;
- else
- debug (g, "osinfo: warning: unknown <distro>
'%s'", content);
- }
-
- return 0;
-}
-
-static void
-free_osinfo_db_entry (struct osinfo *osinfo)
-{
- free (osinfo->product_name);
- free (osinfo->arch);
-
- if (osinfo->re_system_id)
- pcre_free (osinfo->re_system_id);
- if (osinfo->re_volume_id)
- pcre_free (osinfo->re_volume_id);
- if (osinfo->re_publisher_id)
- pcre_free (osinfo->re_publisher_id);
- if (osinfo->re_application_id)
- pcre_free (osinfo->re_application_id);
-}
diff --git a/lib/osinfo.h b/lib/osinfo.h
new file mode 100644
index 000000000..68846747e
--- /dev/null
+++ b/lib/osinfo.h
@@ -0,0 +1,27 @@
+/* libguestfs
+ * Copyright (C) 2017 Red Hat Inc.
+ * Copyright (C) 2017 SUSE Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef OSINFO_H
+#define OSINFO_H
+
+typedef int (*read_osinfo_db_callback) (guestfs_h *g, const char *path, void
*opaque);
+
+extern int read_osinfo_db (guestfs_h *g, read_osinfo_db_callback callback, void
*opaque);
+
+#endif /* OSINFO_H */
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 03/10] mllib: ocaml wrapper for lib/osinfo
Provide osinfo database parsing API in OCaml.
---
lib/osinfo.c | 39 +++++++++++++++++++++
mllib/Makefile.am | 11 ++++--
mllib/osinfo-c.c | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
mllib/osinfo.ml | 26 ++++++++++++++
mllib/osinfo.mli | 31 ++++++++++++++++
5 files changed, 208 insertions(+), 2 deletions(-)
create mode 100644 mllib/osinfo-c.c
create mode 100644 mllib/osinfo.ml
create mode 100644 mllib/osinfo.mli
diff --git a/lib/osinfo.c b/lib/osinfo.c
index 5ccb554be..9a411b28d 100644
--- a/lib/osinfo.c
+++ b/lib/osinfo.c
@@ -52,6 +52,45 @@
#include "osinfo.h"
+#ifndef GUESTFS_PRIVATE
+#undef perrorf
+static void perrorf(guestfs_h *g, const char *fmt, ...)
+__attribute__((format (printf,2,3)));
+
+static void perrorf(guestfs_h *g, const char *fmt, ...)
+{
+ va_list args;
+ CLEANUP_FREE char *msg = NULL;
+ CLEANUP_FREE char *fs = NULL;
+
+ ignore_value (asprintf (&fs, "%s\n", fmt));
+
+ va_start (args, fmt);
+ /* Ignoring the result is fine since perror
+ * can take NULL input */
+ ignore_value (vasprintf (&msg, fs, args));
+ va_end (args);
+ perror (msg);
+}
+
+#undef debug
+static void debug(guestfs_h *g, const char *fmt, ...)
+__attribute__((format (printf,2,3)));
+
+static void
+debug(guestfs_h *g, const char *fmt, ...)
+{
+ va_list args;
+ CLEANUP_FREE char *fs = NULL;
+
+ ignore_value (asprintf (&fs, "%s\n", fmt));
+
+ va_start (args, fmt);
+ vfprintf (stderr, fs, args);
+ va_end (args);
+}
+#endif /* GUESTFS_PRIVATE */
+
/* Read the libosinfo XML database files. The lock is held while
* this is called.
diff --git a/mllib/Makefile.am b/mllib/Makefile.am
index ee2f1a7a8..ee16fe7ef 100644
--- a/mllib/Makefile.am
+++ b/mllib/Makefile.am
@@ -36,6 +36,7 @@ SOURCES_MLI = \
curl.mli \
getopt.mli \
JSON.mli \
+ osinfo.mli \
planner.mli \
progress.mli \
regedit.mli \
@@ -63,7 +64,8 @@ SOURCES_ML = \
curl.ml \
checksums.ml \
xml.ml \
- xpath_helpers.ml
+ xpath_helpers.ml \
+ osinfo.ml
SOURCES_C = \
../common/visit/visit.c \
@@ -71,8 +73,12 @@ SOURCES_C = \
../common/options/keys.c \
../common/options/uri.c \
../common/progress/progress.c \
+ ../lib/alloc.c \
+ ../lib/osinfo.c \
+ ../lib/osinfo.h \
common_utils-c.c \
getopt-c.c \
+ osinfo-c.c \
progress-c.c \
unix_utils-c.c \
uri-c.c \
@@ -106,7 +112,8 @@ libmllib_a_CPPFLAGS = \
-I$(top_srcdir)/lib \
-I$(top_srcdir)/common/visit \
-I$(top_srcdir)/common/options \
- -I$(top_srcdir)/common/progress
+ -I$(top_srcdir)/common/progress \
+ -DLIBOSINFO_DB_PATH='"$(datadir)/libosinfo/db"'
libmllib_a_CFLAGS = \
$(WARN_CFLAGS) $(WERROR_CFLAGS) \
$(LIBVIRT_CFLAGS) $(LIBXML2_CFLAGS) \
diff --git a/mllib/osinfo-c.c b/mllib/osinfo-c.c
new file mode 100644
index 000000000..84760a85f
--- /dev/null
+++ b/mllib/osinfo-c.c
@@ -0,0 +1,103 @@
+/* Bindings for osinfo db reading function.
+ * Copyright (C) 2016 Red Hat Inc.
+ * Copyright (C) 2017 SUSE Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA.
+ */
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <caml/alloc.h>
+#include <caml/callback.h>
+#include <caml/fail.h>
+#include <caml/memory.h>
+#include <caml/mlvalues.h>
+
+#include "guestfs.h"
+#include "guestfs-internal.h"
+#include "osinfo.h"
+
+#pragma GCC diagnostic ignored "-Wmissing-prototypes"
+
+struct callback_wrapper_args {
+ /* In both case we are pointing to local roots, hence why these are
+ * value* not value.
+ */
+ value *exnp; /* Safe place to store any exception
+ raised by callback */
+ value *fvp; /* callback. */
+};
+
+static int read_osinfo_db_callback_wrapper (guestfs_h *g, const char *path,
void *opaque);
+
+value
+guestfs_int_mllib_read_osinfo_db (value gv, value fv)
+{
+ CAMLparam2 (gv, fv);
+ guestfs_h *g = (guestfs_h *) Int64_val (gv);
+ struct callback_wrapper_args args;
+
+ /* This stack address is used to point to the exception, if one is
+ * raised in the visitor_function. Note that the macro initializes
+ * this to Val_unit, which is how we know if an exception was set.
+ */
+ CAMLlocal1 (exn);
+
+ exn = Val_unit;
+
+ args.exnp = &exn;
+ args.fvp = &fv;
+
+ if (read_osinfo_db (g, read_osinfo_db_callback_wrapper, &args) == -1) {
+ if (exn != Val_unit) {
+ /* The failure was caused by the callback raising an
+ * exception. Re-raise it here.
+ */
+ caml_raise (exn);
+ }
+
+ caml_failwith ("read_osinfo_db");
+}
+
+ CAMLreturn (Val_unit);
+}
+
+static int
+read_osinfo_db_callback_wrapper (guestfs_h *g, const char *path, void *opaque)
+{
+ CAMLparam0 ();
+ CAMLlocal2 (pathv, v);
+ struct callback_wrapper_args *args = opaque;
+
+ assert (path != NULL);
+ assert (args != NULL);
+
+ pathv = caml_copy_string (path);
+
+ v = caml_callback_exn (*args->fvp, pathv);
+
+ if (Is_exception_result (v)) {
+ *args->exnp = Extract_exception (v);
+ CAMLreturnT (int, -1);
+ }
+
+ /* No error, return normally. */
+ CAMLreturnT (int, 0);
+}
diff --git a/mllib/osinfo.ml b/mllib/osinfo.ml
new file mode 100644
index 000000000..f5afbd889
--- /dev/null
+++ b/mllib/osinfo.ml
@@ -0,0 +1,26 @@
+(* virt-builder
+ * Copyright (C) 2016 - SUSE Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+open Common_utils
+
+type osinfo_db_callback = string -> unit
+
+external c_read_osinfo_db : int64 -> osinfo_db_callback -> unit +
"guestfs_int_mllib_read_osinfo_db"
+
+let read_osinfo_db g f + c_read_osinfo_db (Guestfs.c_pointer g) f
diff --git a/mllib/osinfo.mli b/mllib/osinfo.mli
new file mode 100644
index 000000000..8a21eb215
--- /dev/null
+++ b/mllib/osinfo.mli
@@ -0,0 +1,31 @@
+(* virt-builder
+ * Copyright (C) 2016 - SUSE Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+(** Bindings for the lib/osinfo.h os-info database reading API. *)
+
+type osinfo_db_callback = string -> unit
+(** The osinfo_db_callback is a callback called for each data file
+ in the os-info database. The argument of the function is
+ the absolute path of the data file.
+
+ The callback may raise an exception, which will cause the whole
+ database read to fail with an error (raising the same exception). *)
+
+val read_osinfo_db : Guestfs.t -> osinfo_db_callback -> unit
+(** [read_osinfo_db g callback] will find all the os-info database
+ files and call the callback on them. *)
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 04/10] builder: rename docs test script
Rename test-virt-builder-docs.sh into test-docs.sh to include test
for another tool's documentation.
---
builder/Makefile.am | 4 ++--
builder/{test-virt-builder-docs.sh => test-docs.sh} | 0
2 files changed, 2 insertions(+), 2 deletions(-)
rename builder/{test-virt-builder-docs.sh => test-docs.sh} (100%)
diff --git a/builder/Makefile.am b/builder/Makefile.am
index d56b394b7..218f64b4c 100644
--- a/builder/Makefile.am
+++ b/builder/Makefile.am
@@ -28,7 +28,7 @@ EXTRA_DIST = \
test-simplestreams/streams/v1/index.json \
test-simplestreams/streams/v1/net.cirros-cloud_released_download.json \
test-virt-builder.sh \
- test-virt-builder-docs.sh \
+ test-docs.sh \
test-virt-builder-list.sh \
test-virt-builder-list-simplestreams.sh \
test-virt-builder-planner.sh \
@@ -237,7 +237,7 @@ yajl_tests_LINK = \
$(yajl_tests_THEOBJECTS) -o $@
TESTS = \
- test-virt-builder-docs.sh \
+ test-docs.sh \
test-virt-builder-list.sh \
test-virt-index-validate.sh \
$(SLOW_TESTS)
diff --git a/builder/test-virt-builder-docs.sh b/builder/test-docs.sh
similarity index 100%
rename from builder/test-virt-builder-docs.sh
rename to builder/test-docs.sh
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 05/10] builder: add a template parameter to get_index
get_index now gets a new template parameter. Setting it to true will
make the index parsing less picky about missing important data. This
can be used to parse a partial index file.
---
builder/builder.ml | 2 +-
builder/index_parser.ml | 26 ++++++++++++++++++--------
builder/index_parser.mli | 4 +++-
3 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/builder/builder.ml b/builder/builder.ml
index b0a48ea89..99cd488b2 100644
--- a/builder/builder.ml
+++ b/builder/builder.ml
@@ -207,7 +207,7 @@ let main () ~tmpdir in
match source.Sources.format with
| Sources.FormatNative ->
- Index_parser.get_index ~downloader ~sigchecker source
+ Index_parser.get_index ~downloader ~sigchecker ~template:false
source
| Sources.FormatSimpleStreams ->
Simplestreams_parser.get_index ~downloader ~sigchecker source
) sources
diff --git a/builder/index_parser.ml b/builder/index_parser.ml
index 468805cf8..c70909e44 100644
--- a/builder/index_parser.ml
+++ b/builder/index_parser.ml
@@ -24,7 +24,7 @@ open Utils
open Printf
open Unix
-let get_index ~downloader ~sigchecker
+let get_index ~downloader ~sigchecker ~template
{ Sources.uri = uri; proxy = proxy } let corrupt_file () error
(f_"The index file downloaded from ‘%s’ is corrupt.\nYou need to ask the
supplier of this file to fix it and upload a fixed version.") uri
@@ -99,8 +99,10 @@ let get_index ~downloader ~sigchecker
let arch try List.assoc ("arch", None) fields
with Not_found ->
- eprintf (f_"%s: no ‘arch’ entry for ‘%s’\n") prog n;
- corrupt_file () in
+ if template then "" else (
+ eprintf (f_"%s: no ‘arch’ entry for ‘%s’\n") prog n;
+ corrupt_file ()
+ ) in
let signature_uri try Some (make_absolute_uri
(List.assoc ("sig", None) fields))
with Not_found -> None in
@@ -112,7 +114,7 @@ let get_index ~downloader ~sigchecker
let revision try Rev_int (int_of_string (List.assoc
("revision", None) fields))
with
- | Not_found -> Rev_int 1
+ | Not_found -> if template then Rev_int 0 else Rev_int 1
| Failure _ ->
eprintf (f_"%s: cannot parse ‘revision’ field for
‘%s’\n") prog n;
corrupt_file () in
@@ -122,11 +124,19 @@ let get_index ~downloader ~sigchecker
try Int64.of_string (List.assoc ("size", None) fields)
with
| Not_found ->
- eprintf (f_"%s: no ‘size’ field for ‘%s’\n") prog n;
- corrupt_file ()
+ if template then
+ Int64.zero
+ else (
+ eprintf (f_"%s: no ‘size’ field for ‘%s’\n") prog n;
+ corrupt_file ()
+ )
| Failure _ ->
- eprintf (f_"%s: cannot parse ‘size’ field for ‘%s’\n")
prog n;
- corrupt_file () in
+ if template then
+ Int64.zero
+ else (
+ eprintf (f_"%s: cannot parse ‘size’ field for
‘%s’\n") prog n;
+ corrupt_file ()
+ ) in
let compressed_size try Some (Int64.of_string
(List.assoc ("compressed_size", None) fields))
with
diff --git a/builder/index_parser.mli b/builder/index_parser.mli
index b8d8ddf3d..aa5f84730 100644
--- a/builder/index_parser.mli
+++ b/builder/index_parser.mli
@@ -16,4 +16,6 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*)
-val get_index : downloader:Downloader.t -> sigchecker:Sigchecker.t ->
Sources.source -> Index.index
+val get_index : downloader:Downloader.t -> sigchecker:Sigchecker.t ->
template:bool -> Sources.source -> Index.index
+(** [get_index download sigchecker source] will parse the source index file
+ into an index entry list. *)
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 06/10] builder: add Index.write_entry function
Add a function to properly write virt-builder source index entries.
Note that this function is very similar to Index.print_entry that is
meant for debugging purposes.
---
.gitignore | 1 +
builder/Makefile.am | 36 +++++++++++-
builder/index.mli | 3 +
builder/index_parser.ml | 54 ++++++++++++++++++
builder/index_parser.mli | 4 ++
builder/index_parser_tests.ml | 129 ++++++++++++++++++++++++++++++++++++++++++
6 files changed, 225 insertions(+), 2 deletions(-)
create mode 100644 builder/index_parser_tests.ml
diff --git a/.gitignore b/.gitignore
index 3b50afdcd..4f04f8451 100644
--- a/.gitignore
+++ b/.gitignore
@@ -106,6 +106,7 @@ Makefile.in
/builder/virt-index-validate
/builder/virt-index-validate.1
/builder/*.xz
+/builder/index_parser_tests
/builder/yajl_tests
/cat/stamp-virt-*.pod
/cat/virt-cat
diff --git a/builder/Makefile.am b/builder/Makefile.am
index 218f64b4c..bf4ccb7d7 100644
--- a/builder/Makefile.am
+++ b/builder/Makefile.am
@@ -217,13 +217,36 @@ yajl_tests_BOBJECTS = \
yajl_tests.cmo
yajl_tests_XOBJECTS = $(yajl_tests_BOBJECTS:.cmo=.cmx)
+index_parser_tests_SOURCES = \
+ index-scan.c \
+ index-struct.c \
+ index-parser-c.c \
+ index-parse.c
+index_parser_tests_CPPFLAGS = $(virt_builder_CPPFLAGS)
+index_parser_tests_BOBJECTS = \
+ utils.cmo \
+ cache.cmo \
+ downloader.cmo \
+ sigchecker.cmo \
+ index.cmo \
+ ini_reader.cmo \
+ index_parser.cmo \
+ index_parser_tests.cmo
+index_parser_tests_XOBJECTS = $(index_parser_tests_BOBJECTS:.cmo=.cmx)
+
# Can't call the following as <test>_OBJECTS because automake gets
confused.
if HAVE_OCAMLOPT
yajl_tests_THEOBJECTS = $(yajl_tests_XOBJECTS)
yajl_tests.cmx: OCAMLPACKAGES += $(OCAMLPACKAGES_TESTS)
+
+index_parser_tests_THEOBJECTS = $(index_parser_tests_XOBJECTS)
+index_parser_tests.cmx: OCAMLPACKAGES += $(OCAMLPACKAGES_TESTS)
else
yajl_tests_THEOBJECTS = $(yajl_tests_BOBJECTS)
yajl_tests.cmo: OCAMLPACKAGES += $(OCAMLPACKAGES_TESTS)
+
+index_parser_tests_THEOBJECTS = $(index_parser_tests_BOBJECTS)
+index_parser_tests.cmo: OCAMLPACKAGES += $(OCAMLPACKAGES_TESTS)
endif
yajl_tests_DEPENDENCIES = \
@@ -236,6 +259,15 @@ yajl_tests_LINK = \
$(OCAMLFIND) $(BEST) $(OCAMLFLAGS) $(OCAMLPACKAGES) $(OCAMLPACKAGES_TESTS)
$(OCAMLLINKFLAGS) \
$(yajl_tests_THEOBJECTS) -o $@
+index_parser_tests_DEPENDENCIES = \
+ $(index_parser_tests_THEOBJECTS) \
+ ../mllib/mllib.$(MLARCHIVE) \
+ $(top_srcdir)/ocaml-link.sh
+index_parser_tests_LINK = \
+ $(top_srcdir)/ocaml-link.sh -cclib '$(OCAMLCLIBS)' -- \
+ $(OCAMLFIND) $(BEST) $(OCAMLFLAGS) $(OCAMLPACKAGES) $(OCAMLPACKAGES_TESTS)
$(OCAMLLINKFLAGS) \
+ $(index_parser_tests_THEOBJECTS) -o $@
+
TESTS = \
test-docs.sh \
test-virt-builder-list.sh \
@@ -249,8 +281,8 @@ if ENABLE_APPLIANCE
TESTS += test-virt-builder.sh
endif ENABLE_APPLIANCE
if HAVE_OCAML_PKG_OUNIT
-check_PROGRAMS += yajl_tests
-TESTS += yajl_tests
+check_PROGRAMS += yajl_tests index_parser_tests
+TESTS += yajl_tests index_parser_tests
endif
check-valgrind:
diff --git a/builder/index.mli b/builder/index.mli
index ff5ec4a35..6202d636e 100644
--- a/builder/index.mli
+++ b/builder/index.mli
@@ -39,3 +39,6 @@ and entry = {
}
val print_entry : out_channel -> (string * entry) -> unit
+(** Debugging helper function dumping an index entry to a stream.
+ To write entries for non-debugging purpose, use the
+ [Index_parser.write_entry] function. *)
diff --git a/builder/index_parser.ml b/builder/index_parser.ml
index c70909e44..c56c4b8f8 100644
--- a/builder/index_parser.ml
+++ b/builder/index_parser.ml
@@ -236,3 +236,57 @@ let get_index ~downloader ~sigchecker ~template
in
get_index ()
+
+let write_entry chan (name, { Index.printable_name = printable_name;
+ file_uri = file_uri;
+ arch = arch;
+ osinfo = osinfo;
+ signature_uri = signature_uri;
+ checksums = checksums;
+ revision = revision;
+ format = format;
+ size = size;
+ compressed_size = compressed_size;
+ expand = expand;
+ lvexpand = lvexpand;
+ notes = notes;
+ aliases = aliases;
+ hidden = hidden }) + let fp fs = fprintf chan fs
in
+ fp "[%s]\n" name;
+ may (fp "name=%s\n") printable_name;
+ may (fp "osinfo=%s\n") osinfo;
+ fp "file=%s\n" file_uri;
+ fp "arch=%s\n" arch;
+ may (fp "sig=%s\n") signature_uri;
+ (match checksums with
+ | None -> ()
+ | Some checksums ->
+ List.iter (
+ fun c ->
+ fp "checksum[%s]=%s\n"
+ (Checksums.string_of_csum_t c) (Checksums.string_of_csum c)
+ ) checksums
+ );
+ fp "revision=%s\n" (string_of_revision revision);
+ may (fp "format=%s\n") format;
+ fp "size=%Ld\n" size;
+ may (fp "compressed_size=%Ld\n") compressed_size;
+ may (fp "expand=%s\n") expand;
+ may (fp "lvexpand=%s\n") lvexpand;
+
+ let format_notes notes + String.concat "\n " (String.nsplit
"\n" notes) in
+
+ List.iter (
+ fun (lang, notes) ->
+ match lang with
+ | "" -> fp "notes=%s\n" (format_notes notes)
+ | lang -> fp "notes[%s]=%s\n" lang (format_notes notes)
+ ) notes;
+ (match aliases with
+ | None -> ()
+ | Some l -> fp "aliases=%s\n" (String.concat " " l)
+ );
+ if hidden then fp "hidden=true\n";
+ fp "\n"
diff --git a/builder/index_parser.mli b/builder/index_parser.mli
index aa5f84730..ae757ad6f 100644
--- a/builder/index_parser.mli
+++ b/builder/index_parser.mli
@@ -19,3 +19,7 @@
val get_index : downloader:Downloader.t -> sigchecker:Sigchecker.t ->
template:bool -> Sources.source -> Index.index
(** [get_index download sigchecker source] will parse the source index file
into an index entry list. *)
+
+val write_entry : out_channel -> (string * Index.entry) -> unit
+(** [write_entry chan entry] writes the index entry to the chan output
+ stream.*)
diff --git a/builder/index_parser_tests.ml b/builder/index_parser_tests.ml
new file mode 100644
index 000000000..c4352d752
--- /dev/null
+++ b/builder/index_parser_tests.ml
@@ -0,0 +1,129 @@
+(* builder
+ * Copyright (C) 2017 SUSE Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+(* This file tests the Index_parser module. *)
+
+open OUnit2
+open Printf
+open Unix_utils
+open Common_utils
+
+let tmpdir = Mkdtemp.temp_dir "guestfs-tests." "";;
+rmdir_on_exit tmpdir
+
+let dummy_sigchecker = Sigchecker.create ~gpg:"gpg"
+ ~check_signature:false
+ ~gpgkey:Utils.No_Key
+ ~tmpdir
+
+let dummy_downloader = Downloader.create ~curl:"do-not-use-curl"
+ ~cache:None ~tmpdir
+
+(* Utils. *)
+let write_entries file entries + let chan = open_out (tmpdir // file) in
+ List.iter (
+ fun (entry) ->
+ Index_parser.write_entry chan entry;
+ ) entries;
+ close_out chan
+
+let read_file file + read_whole_file (tmpdir // "out")
+
+let parse_file file + let source = { Sources.name = "input";
+ uri = tmpdir // file;
+ gpgkey = Utils.No_Key;
+ proxy = Curl.SystemProxy;
+ format = Sources.FormatNative } in
+ let entries = Index_parser.get_index ~downloader:dummy_downloader
+ ~sigchecker:dummy_sigchecker
+ ~template:false
+ source in
+ List.map (
+ fun (id, e) -> (id, { e with Index.file_uri = Filename.basename
e.Index.file_uri })
+ ) entries
+
+let format_entries entries + let format_entry entry + write_entries
"out" [entry];
+ read_file "out" in
+ List.map format_entry entries
+
+let assert_equal_string = assert_equal ~printer:(fun x -> sprintf
"\"%s\"" x)
+let assert_equal_list formatter + let printer = (
+ fun x -> "(" ^ (String.escaped (String.concat ","
(formatter x))) ^ ")"
+ ) in
+ assert_equal ~printer
+
+let test_write_complete ctx + let entry + ("test-id", {
Index.printable_name = Some "test_name";
+ osinfo = Some "osinfo_data";
+ file_uri = "image_path";
+ arch = "test_arch";
+ signature_uri = None;
+ checksums = Some [Checksums.SHA512 "512checksum"];
+ revision = Utils.Rev_int 42;
+ format = Some "qcow2";
+ size = Int64.of_int 123456;
+ compressed_size = Some (Int64.of_int 12345);
+ expand = Some "/dev/sda1";
+ lvexpand = Some "/some/lv";
+ notes = [ ("", "Notes split\non several lines\n\n
with starting space ") ];
+ hidden = false;
+ aliases = Some ["alias1"; "alias2"];
+ sigchecker = dummy_sigchecker;
+ proxy = Curl.SystemProxy }) in
+
+ write_entries "out" [entry];
+ let actual = read_file "out" in
+ let expected = "[test-id]
+name=test_name
+osinfo=osinfo_data
+file=image_path
+arch=test_arch
+checksum[sha512]=512checksum
+revision=42
+format=qcow2
+size=123456
+compressed_size=12345
+expand=/dev/sda1
+lvexpand=/some/lv
+notes=Notes split
+ on several lines
+
+ with starting space
+aliases=alias1 alias2
+
+" in
+ assert_equal_string expected actual;
+
+ let parsed_entries = parse_file "out" in
+ assert_equal_list format_entries [entry] parsed_entries
+
+let suite + "builder Index_parser" >:::
+ [
+ "write.complete" >:: test_write_complete;
+ ]
+
+let () + run_test_tt_main suite
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 07/10] dib: move do_cp to mllib.Commun_utils
---
dib/utils.ml | 4 ----
mllib/common_utils.ml | 5 +++++
mllib/common_utils.mli | 3 +++
3 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/dib/utils.ml b/dib/utils.ml
index afa2ec944..2fe70e7fc 100644
--- a/dib/utils.ml
+++ b/dib/utils.ml
@@ -98,10 +98,6 @@ let get_required_tool tool let require_tool tool ignore
(get_required_tool tool)
-let do_cp src destdir - let cmd = [ "cp"; "-t"; destdir;
"-a"; src ] in
- if run_command cmd <> 0 then exit 1
-
let ensure_trailing_newline str if String.length str > 0 &&
str.[String.length str - 1] <> '\n' then str ^ "\n"
else str
diff --git a/mllib/common_utils.ml b/mllib/common_utils.ml
index 63d8dd92e..ceac57711 100644
--- a/mllib/common_utils.ml
+++ b/mllib/common_utils.ml
@@ -1186,3 +1186,8 @@ let inspect_decrypt g * function.
*)
c_inspect_decrypt g#ocaml_handle (Guestfs.c_pointer g#ocaml_handle)
+
+let do_cp src destdir + let cmd = [ "cp"; "-t"; destdir;
"-a"; src ] in
+ if run_command cmd <> 0 then
+ error (f_"copy of %s to %s failed") src destdir
diff --git a/mllib/common_utils.mli b/mllib/common_utils.mli
index ec41a8ff8..937ef818b 100644
--- a/mllib/common_utils.mli
+++ b/mllib/common_utils.mli
@@ -496,3 +496,6 @@ val inspect_decrypt : Guestfs.guestfs -> unit
(** Simple implementation of decryption: look for any [crypto_LUKS]
partitions and decrypt them, then rescan for VGs. This only works
for Fedora whole-disk encryption. *)
+
+val do_cp : string -> string -> unit
+(** Run the cp command, and exit with an error if it failed *)
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 08/10] mllib: add do_mv helper function to Common_utils
---
mllib/common_utils.ml | 6 ++++++
mllib/common_utils.mli | 3 +++
2 files changed, 9 insertions(+)
diff --git a/mllib/common_utils.ml b/mllib/common_utils.ml
index ceac57711..5cc865659 100644
--- a/mllib/common_utils.ml
+++ b/mllib/common_utils.ml
@@ -1191,3 +1191,9 @@ let do_cp src destdir let cmd = [ "cp";
"-t"; destdir; "-a"; src ] in
if run_command cmd <> 0 then
error (f_"copy of %s to %s failed") src destdir
+
+let do_mv src dest + let cmd = [ "mv"; src; dest ] in
+ let r = run_command cmd in
+ if r <> 0 then
+ error (f_"moving file '%s' to '%s' failed") src
dest
diff --git a/mllib/common_utils.mli b/mllib/common_utils.mli
index 937ef818b..64a0e8b9a 100644
--- a/mllib/common_utils.mli
+++ b/mllib/common_utils.mli
@@ -499,3 +499,6 @@ val inspect_decrypt : Guestfs.guestfs -> unit
val do_cp : string -> string -> unit
(** Run the cp command, and exit with an error if it failed *)
+
+val do_mv : string -> string -> unit
+(** Run the mv command, and exit with an error if it failed *)
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 09/10] mllib: add XPath helper xpath_get_nodes()
This function will allow more OCaml-ish processing of XPath queries
with multiple results.
---
mllib/xpath_helpers.ml | 9 +++++++++
mllib/xpath_helpers.mli | 4 ++++
2 files changed, 13 insertions(+)
diff --git a/mllib/xpath_helpers.ml b/mllib/xpath_helpers.ml
index 8648596a4..c0f4a7315 100644
--- a/mllib/xpath_helpers.ml
+++ b/mllib/xpath_helpers.ml
@@ -53,3 +53,12 @@ let xpath_eval_default parsefn xpath expr default let
xpath_string_default = xpath_eval_default identity
let xpath_int_default = xpath_eval_default int_of_string
let xpath_int64_default = xpath_eval_default Int64.of_string
+
+let xpath_get_nodes xpathctx expr + let obj = Xml.xpath_eval_expression
xpathctx expr in
+ let nodes = ref [] in
+ for i = 0 to Xml.xpathobj_nr_nodes obj - 1 do
+ let node = Xml.xpathobj_node obj i in
+ push_back nodes node
+ done;
+ !nodes
diff --git a/mllib/xpath_helpers.mli b/mllib/xpath_helpers.mli
index 7434ba645..83c770281 100644
--- a/mllib/xpath_helpers.mli
+++ b/mllib/xpath_helpers.mli
@@ -31,3 +31,7 @@ val xpath_int_default : Xml.xpathctx -> string -> int
-> int
val xpath_int64_default : Xml.xpathctx -> string -> int64 -> int64
(** Parse an xpath expression and return a string/int; if the expression
doesn't match, return the default. *)
+
+val xpath_get_nodes : Xml.xpathctx -> string -> Xml.node list
+(** Parse an XPath expression and return a list with the matching
+ XML nodes. *)
--
2.12.0
Cédric Bosdonnat
2017-Apr-12 12:33 UTC
[Libguestfs] [PATCH v6 10/10] Add a virt-builder-repository tool
virt-builder-repository allows users to easily create or update
a virt-builder source repository out of disk images. The tool can
be run in either interactive or automated mode.
---
.gitignore | 3 +
builder/Makefile.am | 84 +++++-
builder/repository_main.ml | 570 ++++++++++++++++++++++++++++++++++++
builder/test-docs.sh | 2 +
builder/virt-builder-repository.pod | 209 +++++++++++++
5 files changed, 865 insertions(+), 3 deletions(-)
create mode 100644 builder/repository_main.ml
create mode 100644 builder/virt-builder-repository.pod
diff --git a/.gitignore b/.gitignore
index 4f04f8451..4b7e44126 100644
--- a/.gitignore
+++ b/.gitignore
@@ -96,13 +96,16 @@ Makefile.in
/builder/oUnit-*
/builder/*.qcow2
/builder/stamp-virt-builder.pod
+/builder/stamp-virt-builder-repository.pod
/builder/stamp-virt-index-validate.pod
/builder/test-config/virt-builder/repos.d/test-index.conf
/builder/test-console-*.sh
/builder/test-simplestreams/virt-builder/repos.d/cirros.conf
/builder/test-website/virt-builder/repos.d/libguestfs.conf
/builder/virt-builder
+/builder/virt-builder-repository
/builder/virt-builder.1
+/builder/virt-builder-repository.1
/builder/virt-index-validate
/builder/virt-index-validate.1
/builder/*.xz
diff --git a/builder/Makefile.am b/builder/Makefile.am
index bf4ccb7d7..df09c3f3d 100644
--- a/builder/Makefile.am
+++ b/builder/Makefile.am
@@ -21,6 +21,8 @@ AM_YFLAGS = -d
EXTRA_DIST = \
$(SOURCES_MLI) $(SOURCES_ML) $(SOURCES_C) \
+ $(REPOSITORY_SOURCES_ML) \
+ $(REPOSITORY_SOURCES_MLI) \
libguestfs.gpg \
opensuse.gpg \
test-console.sh \
@@ -38,6 +40,7 @@ EXTRA_DIST = \
test-virt-index-validate-good-2 \
test-virt-index-validate-good-3 \
virt-builder.pod \
+ virt-builder-repository.pod \
virt-index-validate.pod \
yajl_tests.ml
@@ -85,13 +88,44 @@ SOURCES_C = \
setlocale-c.c \
yajl-c.c
+REPOSITORY_SOURCES_ML = \
+ utils.ml \
+ index.ml \
+ cache.ml \
+ downloader.ml \
+ sigchecker.ml \
+ ini_reader.ml \
+ index_parser.ml \
+ yajl.ml \
+ paths.ml \
+ sources.ml \
+ repository_main.ml
+
+REPOSITORY_SOURCES_MLI = \
+ cache.mli \
+ downloader.mli \
+ index.mli \
+ index_parser.mli \
+ ini_reader.mli \
+ sigchecker.mli \
+ sources.mli \
+ yajl.mli
+
+REPOSITORY_SOURCES_C = \
+ index-scan.c \
+ index-struct.c \
+ index-parse.c \
+ index-parser-c.c \
+ yajl-c.c
+
+
man_MANS noinst_DATA bin_PROGRAMS
if HAVE_OCAML
-bin_PROGRAMS += virt-builder
+bin_PROGRAMS += virt-builder virt-builder-repository
virt_builder_SOURCES = $(SOURCES_C)
virt_builder_CPPFLAGS = \
@@ -101,8 +135,7 @@ virt_builder_CPPFLAGS = \
-I$(shell $(OCAMLC) -where) \
-I$(top_srcdir)/gnulib/lib \
-I$(top_srcdir)/common/utils \
- -I$(top_srcdir)/lib \
- -I$(top_srcdir)/fish
+ -I$(top_srcdir)/lib
virt_builder_CFLAGS = \
-pthread \
$(WARN_CFLAGS) $(WERROR_CFLAGS) \
@@ -115,6 +148,26 @@ virt_builder_CFLAGS = \
BOBJECTS = $(SOURCES_ML:.ml=.cmo)
XOBJECTS = $(BOBJECTS:.cmo=.cmx)
+virt_builder_repository_SOURCES = $(REPOSITORY_SOURCES_C)
+virt_builder_repository_CPPFLAGS = \
+ -I. \
+ -I$(top_builddir) \
+ -I$(top_srcdir)/gnulib/lib -I$(top_builddir)/gnulib/lib \
+ -I$(shell $(OCAMLC) -where) \
+ -I$(top_srcdir)/gnulib/lib \
+ -I$(top_srcdir)/lib \
+ -I$(top_srcdir)/fish
+virt_builder_repository_CFLAGS = \
+ -pthread \
+ $(WARN_CFLAGS) $(WERROR_CFLAGS) \
+ -Wno-unused-macros \
+ $(LIBLZMA_CFLAGS) \
+ $(LIBTINFO_CFLAGS) \
+ $(LIBXML2_CFLAGS) \
+ $(YAJL_CFLAGS)
+REPOSITORY_BOBJECTS = $(REPOSITORY_SOURCES_ML:.ml=.cmo)
+REPOSITORY_XOBJECTS = $(REPOSITORY_BOBJECTS:.cmo=.cmx)
+
# -I $(top_builddir)/lib/.libs is a hack which forces corresponding -L
# option to be passed to gcc, so we don't try linking against an
# installed copy of libguestfs.
@@ -149,8 +202,10 @@ OCAMLFLAGS = $(OCAML_FLAGS) $(OCAML_WARN_ERROR)
if !HAVE_OCAMLOPT
OBJECTS = $(BOBJECTS)
+REPOSITORY_OBJECTS = $(REPOSITORY_BOBJECTS)
else
OBJECTS = $(XOBJECTS)
+REPOSITORY_OBJECTS = $(REPOSITORY_XOBJECTS)
endif
OCAMLLINKFLAGS = mlguestfs.$(MLARCHIVE) mllib.$(MLARCHIVE)
customize.$(MLARCHIVE) $(LINK_CUSTOM_OCAMLC_ONLY)
@@ -165,6 +220,15 @@ virt_builder_LINK = \
$(OCAMLFIND) $(BEST) $(OCAMLFLAGS) $(OCAMLPACKAGES) $(OCAMLLINKFLAGS) \
$(OBJECTS) -o $@
+virt_builder_repository_DEPENDENCIES = \
+ $(REPOSITORY_OBJECTS) \
+ ../mllib/mllib.$(MLARCHIVE) \
+ $(top_srcdir)/ocaml-link.sh
+virt_builder_repository_LINK = \
+ $(top_srcdir)/ocaml-link.sh -cclib '$(OCAMLCLIBS)' -- \
+ $(OCAMLFIND) $(BEST) $(OCAMLFLAGS) $(OCAMLPACKAGES) $(OCAMLLINKFLAGS) \
+ $(REPOSITORY_OBJECTS) -o $@
+
# Manual pages and HTML files for the website.
man_MANS += virt-builder.1
@@ -183,6 +247,20 @@ stamp-virt-builder.pod: virt-builder.pod
$(top_srcdir)/customize/customize-synop
$<
touch $@
+man_MANS += virt-builder-repository.1
+noinst_DATA += $(top_builddir)/website/virt-builder-repository.1.html
+
+virt-builder-repository.1
$(top_builddir)/website/virt-builder-repository.1.html:
stamp-virt-builder-repository.pod
+
+stamp-virt-builder-repository.pod: virt-builder-repository.pod
+ $(PODWRAPPER) \
+ --man virt-builder-repository.1 \
+ --html $(top_builddir)/website/virt-builder-repository.1.html \
+ --license GPLv2+ \
+ --warning safe \
+ $<
+ touch $@
+
# Tests.
TESTS_ENVIRONMENT = $(top_builddir)/run --test
diff --git a/builder/repository_main.ml b/builder/repository_main.ml
new file mode 100644
index 000000000..6806221c3
--- /dev/null
+++ b/builder/repository_main.ml
@@ -0,0 +1,570 @@
+(* virt-builder
+ * Copyright (C) 2016-2017 SUSE Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+open Common_gettext.Gettext
+open Common_utils
+open Unix_utils
+open Getopt.OptionName
+open Utils
+open Yajl
+open Xpath_helpers
+
+open Printf
+
+module StringSet = Set.Make(String)
+
+type cmdline = {
+ gpg : string;
+ gpgkey : string option;
+ interactive : bool;
+ keep_unsigned : bool;
+ no_compression : bool;
+ repo : string;
+}
+
+type disk_image_info = {
+ format : string;
+ size : int64;
+}
+
+let parse_cmdline () + let gpg = ref "gpg" in
+ let gpgkey = ref "" in
+ let interactive = ref false in
+ let keep_unsigned = ref false in
+ let no_compression = ref false in
+ let machine_readable = ref false in
+
+ let argspec = [
+ [ L"gpg" ], Getopt.Set_string ("gpg", gpg), s_"Set
GPG binary/command";
+ [ S 'K'; L"gpg-key" ], Getopt.Set_string
("gpgkey", gpgkey),
+ s_"ID of the GPG key to sign the repo with";
+ [ S 'i'; L"interactive" ], Getopt.Set interactive,
s_"Ask the user about missing data";
+ [ L"keep-index" ], Getopt.Set keep_unsigned, s_"Keep
unsigned index";
+ [ L"no-compression" ], Getopt.Set no_compression,
s_"Don't compress the new images in the index";
+ [ L"machine-readable" ], Getopt.Set machine_readable,
s_"Make output machine readable";
+ ] in
+
+ let args = ref [] in
+ let anon_fun s = push_front s args in
+ let usage_msg + sprintf (f_"\
+%s: create a repository for virt-builder
+
+ virt-builder-repository REPOSITORY_PATH
+
+A short summary of the options is given below. For detailed help please
+read the man page virt-builder-repository(1).
+")
+ prog in
+ let opthandle = create_standard_options argspec ~anon_fun usage_msg in
+ Getopt.parse opthandle;
+
+ (* Machine-readable mode? Print out some facts about what
+ * this binary supports.
+ *)
+ if !machine_readable then (
+ printf "virt-builder-repository\n";
+ exit 0
+ );
+
+ (* Dereference options. *)
+ let args = List.rev !args in
+ let gpg = !gpg in
+ let gpgkey = match !gpgkey with "" -> None | s -> Some s in
+ let interactive = !interactive in
+ let keep_unsigned = !keep_unsigned in
+ let no_compression = !no_compression in
+
+ (* Check options *)
+ let repo + match args with
+ | [repo] -> repo
+ | [] ->
+ error (f_"virt-builder-repository /path/to/repo\nUse
'/path/to/repo' to point to the repository folder.")
+ | _ ->
+ error (f_"too many parameters, only one path to repository is
allowed") in
+
+ {
+ gpg = gpg;
+ gpgkey = gpgkey;
+ interactive = interactive;
+ keep_unsigned = keep_unsigned;
+ no_compression = no_compression;
+ repo = repo;
+ }
+
+let increment_revision revision + match revision with
+ | Utils.Rev_int n -> Utils.Rev_int (n + 1)
+ | Utils.Rev_string s ->
+ if Str.string_match (Str.regexp "^\\(.*[-._]\\)\\([0-9]+\\)$") s
0 then
+ let prefix = Str.matched_group 1 s in
+ let suffix = int_of_string (Str.matched_group 2 s) in
+ Utils.Rev_string (prefix ^ (string_of_int (suffix + 1)))
+ else
+ Utils.Rev_string (s ^ ".1")
+
+let checksums_get_sha512 checksums + match checksums with
+ | Some csums -> (
+ try
+ List.find (
+ fun c ->
+ match c with
+ | Checksums.SHA512 _ -> true
+ | _ -> false
+ ) csums
+ with
+ | _ -> Checksums.SHA512 ""
+ )
+ | None -> Checksums.SHA512 ""
+
+let osinfo_ids = ref None
+
+let osinfo_get_short_ids () + match !osinfo_ids with
+ | Some ids -> ids
+ | None -> (
+ let set = ref StringSet.empty in
+ let g = open_guestfs () in
+
+ Osinfo.read_osinfo_db g#ocaml_handle (
+ fun filepath ->
+ let doc = Xml.parse_file filepath in
+ let xpathctx = Xml.xpath_new_context doc in
+ let nodes = xpath_get_nodes xpathctx "/libosinfo/os/short-id"
in
+ List.iter (
+ fun node ->
+ let id = Xml.node_as_string node in
+ set := StringSet.add id !set
+ ) nodes
+ );
+ g#close ();
+ osinfo_ids := Some (!set);
+ !set
+ )
+
+let compress_to file outdir + let outimg = outdir // (Filename.basename file)
^ ".xz" in
+
+ info "Compressing ...%!";
+ let cmd = sprintf "cat \"%s\" | xz -f --best
--block-size=16777216 - >\"%s\""
+ file outimg in
+ if shell_command cmd <> 0 then
+ exit 1;
+ outimg
+
+let get_disk_image_info filepath + let qemuimg_cmd = "qemu-img info
--output json " ^ (quote filepath) in
+ let lines = external_command qemuimg_cmd in
+ let line = String.concat "\n" lines in
+ let infos = yajl_tree_parse line in
+ {
+ format = object_get_string "format" infos;
+ size = object_get_number "virtual-size" infos
+ }
+
+let compute_short_id distro major minor + match distro with
+ | "sles"
+ | "sled" -> sprintf "%s%dsp%d" distro major minor
+ | "fedora" -> sprintf "%s%d" distro major
+ | _ -> sprintf "%s%d.%d" distro major minor
+
+let has_entry id arch index + List.exists (
+ fun (item_id, { Index.arch = item_arch }) ->
+ item_id = id && item_arch = arch
+ ) index
+
+let process_image acc_entries filename repo tmprepo index interactive
+ no_compression sigchecker + message (f_"Preparing
%s") filename;
+
+ let filepath = repo // filename in
+ let { format = format; size = size } = get_disk_image_info filepath in
+ let out_path = if no_compression then
+ filepath
+ else
+ compress_to filepath tmprepo in
+ let out_filename = Filename.basename out_path in
+ let checksum = Checksums.compute_checksum "sha512" out_path in
+ let compressed_size = (Unix.LargeFile.stat out_path).Unix.LargeFile.st_size
in
+
+ let ask ?default ?values message + let default_str = match default with
+ | None -> ""
+ | Some x -> sprintf " [%s] " x in
+
+ let list_str = match values with
+ | None -> ""
+ | Some x ->
+ sprintf (f_"Choose one from the list below:\n %s\n")
+ (String.concat "\n " x) in
+
+ printf "%s%s%s" message default_str list_str;
+
+ let value = read_line () in
+ match value with
+ | "" -> default
+ | s -> Some s
+ in
+
+ let rec ask_id default + match ask (s_"Identifier: ") ~default
with
+ | None -> default
+ | Some id ->
+ if not (Str.string_match (Str.regexp "[a-zA-Z0-9-_.]+") id 0)
then (
+ warning (f_"Allowed characters are letters, digits, - _ and
.");
+ ask_id default
+ ) else
+ id in
+
+ let ask_arch guess + let arches = [ "x86_64";
"aarch64"; "armv7l"; "i686"; "ppc64";
"ppc64le"; "s390x" ] in
+ match (ask (s_"Architecture: ") ~default:guess ~values:arches)
with
+ | None -> "unknown"
+ | Some x -> x
+ in
+
+ let ask_osinfo default + match ask (s_ "osinfo short ID (can be found
with osinfo-query os command): ")
+ ~default with
+ | None -> None
+ | Some osinfo ->
+ let osinfo_ids = osinfo_get_short_ids () in
+ if not (StringSet.mem osinfo osinfo_ids) then
+ warning (f_"'%s' is not a recognized osinfo OS id; using
it anyway") osinfo;
+ Some osinfo in
+
+ (* Do we have an entry for that file already? *)
+ let file_entry + try
+ List.hd (
+ List.filter (
+ fun (_, { Index.file_uri = file_uri }) ->
+ let basename = Filename.basename file_uri in
+ basename = out_filename || basename = filename
+ ) index
+ )
+ with
+ | Failure _ ->
+ let entry = { Index.printable_name = None;
+ osinfo = None;
+ file_uri = "";
+ arch = "";
+ signature_uri = None;
+ checksums = None;
+ revision = Utils.Rev_int 0;
+ format = Some format;
+ size = size;
+ compressed_size = Some compressed_size;
+ expand = None;
+ lvexpand = None;
+ notes = [];
+ hidden = false;
+ aliases = None;
+ sigchecker = sigchecker;
+ proxy = Curl.UnsetProxy } in
+ ("", entry) in
+
+ let id, { Index.printable_name = printable_name;
+ osinfo = osinfo;
+ arch = arch;
+ checksums = checksums;
+ revision = revision;
+ expand = expand;
+ lvexpand = lvexpand;
+ notes = notes;
+ hidden = hidden;
+ aliases = aliases } = file_entry in
+
+ let old_checksum = checksums_get_sha512 checksums in
+
+ if old_checksum = checksum then
+ let id, entry = file_entry in
+ (id, { entry with Index.file_uri = out_filename })
+ else (
+ message (f_"Extracting data from the image...");
+ let g = new Guestfs.guestfs () in
+ g#add_drive_ro filepath;
+ g#launch ();
+
+ let roots = g#inspect_os () in
+ let nroots = Array.length roots in
+ if nroots <> 1 then
+ error (f_"virt-builder template images must have one and only one
root file system, found %d")
+ nroots;
+
+ let root = Array.get roots 0 in
+ let product = g#inspect_get_product_name root in
+ let inspected_arch = g#inspect_get_arch root in
+ let distro = g#inspect_get_distro root in
+ let version_major = g#inspect_get_major_version root in
+ let version_minor = g#inspect_get_minor_version root in
+ let lvs = g#lvs () in
+ let filesystems = g#inspect_get_filesystems root in
+
+ let shortid = compute_short_id distro version_major version_minor in
+
+ g#close ();
+
+ let id + if id = "" then (
+ if interactive then ask_id shortid
+ else error (f_"missing image identifier");
+ ) else id in
+
+ let arch + if arch = "" then (
+ if interactive then ask_arch inspected_arch
+ else inspected_arch;
+ ) else arch in
+
+ if arch = "" then
+ error (f_"missing architecture for %s") id;
+
+ if has_entry id arch acc_entries then
+ error (f_"Already existing image with id %s and architecture
%s") id arch;
+
+ let printable_name + if printable_name = None then
+ if interactive then ask (s_"Display name: ") ~default:product
+ else Some product
+ else
+ printable_name in
+
+ let osinfo + if osinfo = None then
+ if interactive then ask_osinfo shortid else Some shortid
+ else
+ osinfo in
+
+ let expand + if expand = None then
+ if interactive then ask (s_"Expandable partition: ")
~default:root
+ ~values:(Array.to_list filesystems)
+ else Some root
+ else
+ expand in
+
+ let lvexpand + if lvexpand = None && lvs <> [||] then
+ if interactive then
+ ask (s_"Expandable volume: ") ~values:(Array.to_list lvs)
+ else Some (Array.get lvs 0)
+ else
+ lvexpand in
+
+ let revision + if old_checksum <> checksum then
+ increment_revision revision
+ else
+ revision in
+
+ (id, { Index.printable_name = printable_name;
+ osinfo = osinfo;
+ file_uri = Filename.basename out_path;
+ arch = arch;
+ signature_uri = None;
+ checksums = Some [checksum];
+ revision = revision;
+ format = Some format;
+ size = size;
+ compressed_size = Some compressed_size;
+ expand = expand;
+ lvexpand = lvexpand;
+ notes = notes;
+ hidden = hidden;
+ aliases = aliases;
+ sigchecker = sigchecker;
+ proxy = Curl.UnsetProxy })
+ )
+
+let main () + let cmdline = parse_cmdline () in
+
+ (* If debugging, echo the command line arguments. *)
+ debug "command line: %s\n" (String.concat " "
(Array.to_list Sys.argv));
+
+ (* Check that the paths are existing *)
+ if not (Sys.file_exists cmdline.repo) then
+ error (f_"repository folder '%s' doesn't exist")
cmdline.repo;
+
+ (* Create a temporary folder to work in *)
+ let tmpdir = Mkdtemp.temp_dir ~base_dir:cmdline.repo
+ "virt-builder-repository."
"" in
+ rmdir_on_exit tmpdir;
+
+ let tmprepo = tmpdir // "repo" in
+ mkdir_p tmprepo 0o700;
+
+ let sigchecker = Sigchecker.create ~gpg:cmdline.gpg
+ ~check_signature:false
+ ~gpgkey:No_Key
+ ~tmpdir in
+
+ let index + try
+ let index_filename + List.find (
+ fun filename -> Sys.file_exists (cmdline.repo // filename)
+ ) [ "index.asc"; "index" ] in
+
+ let downloader = Downloader.create ~curl:"do-not-use-curl"
+ ~cache:None ~tmpdir in
+
+ let source = { Sources.name = index_filename;
+ uri = cmdline.repo // index_filename;
+ gpgkey = No_Key;
+ proxy = Curl.SystemProxy;
+ format = Sources.FormatNative } in
+
+ Index_parser.get_index ~downloader ~sigchecker ~template:true source
+ with Not_found -> [] in
+
+ (* Check for index/interactive consistency *)
+ if not cmdline.interactive && index == [] then
+ error (f_"the repository must contain an index file when running in
automated mode");
+
+ debug "Searching for images ...\n";
+
+ let images + let is_supported_format file + let extension =
last_part_of file '.' in
+ match extension with
+ | Some ext -> List.mem ext [ "qcow2"; "raw";
"img" ]
+ | None -> file <> "index" in
+ let is_new file + try
+ let _, { Index.checksums = checksums } + List.find (
+ fun (_, { Index.file_uri = file_uri }) ->
+ Filename.basename file_uri = file
+ ) index in
+ let checksum = checksums_get_sha512 checksums in
+ let path = cmdline.repo // file in
+ let file_checksum = Checksums.compute_checksum "sha512" path
in
+ checksum <> file_checksum
+ with Not_found -> true in
+ let files = Array.to_list (Sys.readdir cmdline.repo) in
+ List.filter (
+ fun file ->
+ if is_supported_format file then
+ is_new file
+ else
+ false
+ ) files in
+
+ if images == [] then (
+ info (f_ "No new image found");
+ exit 0
+ );
+
+ info (f_ "Found new images: %s") (String.concat " "
images);
+
+ let outindex_path = tmprepo // "index" in
+ let index_channel = open_out outindex_path in
+
+ (* Generate entries for uncompressed images *)
+ let images_entries = List.fold_right (
+ fun filename acc ->
+ let image_entry = process_image acc filename cmdline.repo tmprepo
+ index cmdline.interactive
cmdline.no_compression
+ sigchecker in
+ image_entry :: acc
+ ) images [] in
+
+ (* Filter out entries for newly found images and entries
+ without a corresponding image file or with empty arch *)
+ let index = List.filter (
+ fun (id, { Index.arch = arch;
+ Index.file_uri = file_uri }) ->
+ arch <> "" && not (has_entry id arch
images_entries) &&
+ Sys.file_exists file_uri
+ ) index in
+
+ (* Convert all URIs back to relative ones *)
+ let index = List.map (
+ fun (id, entry) ->
+ let { Index.file_uri = file_uri } = entry in
+ let rel_path + try
+ subdirectory cmdline.repo file_uri
+ with
+ | Invalid_argument _ ->
+ file_uri in
+ let rel_entry = { entry with Index.file_uri = rel_path } in
+ (id, rel_entry)
+ ) index in
+
+ (* Write all the entries *)
+ List.iter (
+ fun entry ->
+ Index_parser.write_entry index_channel entry;
+ ) (index @ images_entries);
+
+ close_out index_channel;
+
+ (* GPG sign the generated index *)
+ (match cmdline.gpgkey with
+ | None ->
+ debug "Skip index signing"
+ | Some gpgkey ->
+ message (f_"Signing index with GPG key %s") gpgkey;
+ let cmd = sprintf "%s --armor --output %s/index.gpg --export %s"
+ cmdline.gpg tmprepo gpgkey in
+ if shell_command cmd <> 0 then
+ error (f_"failed to export GPG key %s") gpgkey;
+
+ let cmd = sprintf "%s --armor --default-key %s --clearsign
%s/index"
+ cmdline.gpg gpgkey tmprepo in
+ if shell_command cmd <> 0 then
+ error (f_"failed to sign index");
+
+ (* Remove the index file since we have the signed version of it *)
+ if not cmdline.keep_unsigned then
+ Sys.remove (tmprepo // "index")
+ );
+
+ message (f_"Creating index backup copy");
+
+ List.iter (
+ fun filename ->
+ let filepath = cmdline.repo // filename in
+ if Sys.file_exists filepath then
+ do_mv filepath (filepath ^ ".bak")
+ ) ["index"; "index.asc"];
+
+ message (f_"Moving files to final destination");
+
+ Array.iter (
+ fun filename ->
+ do_mv (tmprepo // filename) cmdline.repo
+ ) (Sys.readdir tmprepo);
+
+ debug "Cleanup";
+
+ (* Remove the processed image files *)
+ if not cmdline.no_compression then
+ List.iter (
+ fun filename -> Sys.remove (cmdline.repo // filename)
+ ) images
+
+let () = run_main_and_handle_errors main
diff --git a/builder/test-docs.sh b/builder/test-docs.sh
index 884135de6..6f39b906d 100755
--- a/builder/test-docs.sh
+++ b/builder/test-docs.sh
@@ -25,3 +25,5 @@ $top_srcdir/podcheck.pl virt-builder.pod virt-builder \
--insert $top_srcdir/customize/customize-synopsis.pod:__CUSTOMIZE_SYNOPSIS__
\
--insert $top_srcdir/customize/customize-options.pod:__CUSTOMIZE_OPTIONS__ \
--ignore=--check-signatures,--no-check-signatures
+
+$srcdir/../podcheck.pl virt-builder-repository.pod virt-builder-repository
diff --git a/builder/virt-builder-repository.pod
b/builder/virt-builder-repository.pod
new file mode 100644
index 000000000..0521a8e01
--- /dev/null
+++ b/builder/virt-builder-repository.pod
@@ -0,0 +1,209 @@
+=begin html
+
+<img src="virt-builder.svg" width="250"
+ style="float: right; clear: right;" />
+
+=end html
+
+=head1 NAME
+
+virt-builder-repository - Build virt-builder source repository easily
+
+=head1 SYNOPSIS
+
+ virt-builder-repository /path/to/repository
+ [-i|--interactive] [--gpg-key KEYID]
+
+=head1 DESCRIPTION
+
+Virt-builder is a tool for quickly building new virtual machines. It can
+be configured to use template repositories. However creating and
+maintaining a repository involves many tasks which can be automated.
+virt-builder-repository is a tool helping to manage these repositories.
+
+Virt-builder-repository loops over the files in the
C</path/to/repository>
+folder, compresses the files with a name ending by C<qcow2>, C<raw>
or
+C<img>, extracts data from them and creates or updates the C<index>
file.
+
+Some of the image-related data needed for the index file can't be
+computed from the image file. virt-builder-repository first tries to
+find them in the existing index file. If data are still missing after
+this, they are prompted in interactive mode, otherwise an error will
+be triggered.
+
+If a C<KEYID> is provided, the generated index file will be signed
+with this GPG key.
+
+=head1 EXAMPLES
+
+=head2 Create the initial repository
+
+Create a folder and copy the disk image template files in it. Then
+run a command like the following one:
+
+ virt-builder-repository --gpg-key "joe@hacker.org" -i
/path/to/folder
+
+Note that this example command runs in interactive mode. To run in
+automated mode, a minimal index file needs to be created before running
+the command containing sections like this one:
+
+ [template_id]
+ file=template_filename.qcow.xz
+
+The file value needs to match the image name extended with the ".xz"
+suffix if the C<--no-compression> parameter is not provided or the
+image name if no compression is involved. Other optional data can be
+prefilled. Default values are computed by inspecting the disk image.
+For more informations, see
+L<virt-builder(1)/Creating and signing the index file>.
+
+=head2 Update images in an existing repository
+
+In this use case, an new image or a new revision of an existing image
+needs to be added to the repository. Place the corresponding image
+template files in the repository folder.
+
+To update the revision of an image, the file needs to have the same
+name than the existing one (without the C<xz> extension).
+
+As in the repository creation use case, a minimal fragment can be
+added to the index file for the automated mode. This can be done
+on the signed index even if it may sound a strange idea: the index
+will be resigned by the tool.
+
+To remove an image from the repository, just remove the corresponding
+compressed image file before running virt-builder-repository.
+
+Then running the following command will complete and update the index
+file:
+
+ virt-builder-repository --gpg-key "joe@hacker.org" -i
/path/to/folder
+
+virt-builder-repository works in a temporary folder inside the repository
+one. If anything wrong happens when running the tool, the repository is
+left untouched.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<--help>
+
+Display help.
+
+=item B<--gpg> GPG
+
+Specify an alternate L<gpg(1)> (GNU Privacy Guard) binary. You can
+also use this to add gpg parameters, for example to specify an
+alternate home directory:
+
+ virt-builder-repository --gpg "gpg --homedir /tmp" [...]
+
+This can also be used to avoid gpg asking for the key passphrase:
+
+ virt-builder-repository --gpg "gpg --passphrase-file /tmp/pass
--batch" [...]
+
+=item B<-K> KEYID
+
+=item B<--gpg-key> KEYID
+
+Specify the GPG key to be used to sign the repository index file.
+If not provided, the index will left unsigned. C<KEYID> is used to
+identify the GPG key to use. This value is passed to gpg's
+C<--default-key> option and can can thus be an email address or a
+fingerprint.
+
+B<NOTE>: by default, virt-builder-repository searches for the key
+in the user's GPG key ring.
+
+=item B<-i>
+
+=item B<--interactive>
+
+Prompt for missing data. Default values are computed from the disk
+image.
+
+=item B<--keep-index>
+
+When using a GPG key, don't remove the unsigned index.
+
+=item B<--no-compression>
+
+Don't compress the template images.
+
+=item B<--machine-readable>
+
+This option is used to make the output more machine friendly
+when being parsed by other programs. See
+L</MACHINE READABLE OUTPUT> below.
+
+
+=item B<--colors>
+
+=item B<--colours>
+
+Use ANSI colour sequences to colourize messages. This is the default
+when the output is a tty. If the output of the program is redirected
+to a file, ANSI colour sequences are disabled unless you use this
+option.
+
+=item B<-q>
+
+=item B<--quiet>
+
+Don't print ordinary progress messages.
+
+=item B<-v>
+
+=item B<--verbose>
+
+Enable debug messages and/or produce verbose output.
+
+When reporting bugs, use this option and attach the complete output to
+your bug report.
+
+=item B<-V>
+
+=item B<--version>
+
+Display version number and exit.
+
+=item B<-x>
+
+Enable tracing of libguestfs API calls.
+
+
+=back
+
+=head1 MACHINE READABLE OUTPUT
+
+The I<--machine-readable> option can be used to make the output more
+machine friendly, which is useful when calling virt-builder-repository from
+other programs, GUIs etc.
+
+Use the option on its own to query the capabilities of the
+virt-builder-repository binary. Typical output looks like this:
+
+ $ virt-builder-repository --machine-readable
+ virt-builder-repository
+
+A list of features is printed, one per line, and the program exits
+with status 0.
+
+=head1 EXIT STATUS
+
+This program returns 0 if successful, or non-zero if there was an
+error.
+
+=head1 SEE ALSO
+
+L<virt-builder(1)>
+L<http://libguestfs.org/>.
+
+=head1 AUTHOR
+
+Cédric Bosdonnat L<mailto:cbosdonnat@suse.com>
+
+=head1 COPYRIGHT
+
+Copyright (C) 2016-2017 SUSE Inc.
--
2.12.0
Pino Toscano
2017-Apr-25 15:57 UTC
Re: [Libguestfs] [PATCH v6 07/10] dib: move do_cp to mllib.Commun_utils
On Wednesday, 12 April 2017 14:33:09 CEST Cédric Bosdonnat wrote:> --- > dib/utils.ml | 4 ---- > mllib/common_utils.ml | 5 +++++ > mllib/common_utils.mli | 3 +++ > 3 files changed, 8 insertions(+), 4 deletions(-)It looks like virt-builder-repository does not use do_cp anymore, so this patch can be put aside for now. -- Pino Toscano
Pino Toscano
2017-Apr-26 13:04 UTC
Re: [Libguestfs] [PATCH v6 10/10] Add a virt-builder-repository tool
On Wednesday, 12 April 2017 14:33:12 CEST Cédric Bosdonnat wrote:> virt-builder-repository allows users to easily create or update > a virt-builder source repository out of disk images. The tool can > be run in either interactive or automated mode. > ---Many good progresses, thanks :) So far worked fine in my few attempts when playing with it -- some notes below.> +let increment_revision revision > + match revision with > + | Utils.Rev_int n -> Utils.Rev_int (n + 1) > + | Utils.Rev_string s -> > + if Str.string_match (Str.regexp "^\\(.*[-._]\\)\\([0-9]+\\)$") s 0 then > + let prefix = Str.matched_group 1 s in > + let suffix = int_of_string (Str.matched_group 2 s) in > + Utils.Rev_string (prefix ^ (string_of_int (suffix + 1))) > + else > + Utils.Rev_string (s ^ ".1")The "top-level match" of this function can be simplified: let increment_revision = function | Utils.Rev_int n -> Utils.Rev_int (n + 1) | Utils.Rev_string s -> etc...> +let checksums_get_sha512 checksums > + match checksums with > + | Some csums -> ( > + try > + List.find ( > + fun c -> > + match c with > + | Checksums.SHA512 _ -> true > + | _ -> false > + ) csums > + with > + | _ -> Checksums.SHA512 "" > + ) > + | None -> Checksums.SHA512 ""Ditto, in two places: let checksums_get_sha512 = function | Some csums -> try List.find ( function | Checksums.SHA512 _ -> true | _ -> false ) csums with Not_found -> Checksums.SHA512 "" | None -> Checksums.SHA512 "" Also, List.find is documented to raise only Not_found, so catch that exception specifically (to avoid a catch-all statements that could swallow other exceptions, in case the code is expanded in the future).> +let compress_to file outdir > + let outimg = outdir // (Filename.basename file) ^ ".xz" in > + > + info "Compressing ...%!"; > + let cmd = sprintf "cat \"%s\" | xz -f --best --block-size=16777216 - >\"%s\"" > + file outimg in > + if shell_command cmd <> 0 thenThis will be done in a much better way once https://www.redhat.com/archives/libguestfs/2017-April/msg00097.html is in.> +let compute_short_id distro major minor > + match distro with > + | "sles" > + | "sled" -> sprintf "%s%dsp%d" distro major minor > + | "fedora" -> sprintf "%s%d" distro major > + | _ -> sprintf "%s%d.%d" distro major minorI guess it will product a wrong id for e.g. sles 12.0 ;) Also fedora also uses the major version only. A fixed version of the above, that handles more distros, could be: let compute_short_id distro major minor match distro with | "centos" when major >= 7 -> sprintf "%s%d.0" distro major | "debian" when major >= 4 -> sprintf "%s%d" distro major | ("fedora"|"mageia") -> sprintf "%s%d" distro major | "sles" when major = 0 -> sprintf "%s%d" distro major | "sles" -> sprintf "%s%dsp%d" distro major minor | "ubuntu" -> sprintf "%s%d.%02d" distro major minor | _ (* Any other combination. *) -> sprintf "%s%d.%d" distro major minor (Also, note that libguestfs considers both SLES and SLED as "sles" -- maybe we could change that, but surely not as part of this series :) )> +let process_image acc_entries filename repo tmprepo index interactive > + no_compression sigchecker > + message (f_"Preparing %s") filename; > + > + let filepath = repo // filename in > + let { format = format; size = size } = get_disk_image_info filepath in > + let out_path = if no_compression then > + filepath > + else > + compress_to filepath tmprepo inA bit confusing indentation for this block -- better something like: let out_path if no_compression then filepath else compress_to filepath tmprepo in> + let out_filename = Filename.basename out_path in > + let checksum = Checksums.compute_checksum "sha512" out_path in > + let compressed_size = (Unix.LargeFile.stat out_path).Unix.LargeFile.st_size in > + > + let ask ?default ?values message > + let default_str = match default with > + | None -> "" > + | Some x -> sprintf " [%s] " x in > + > + let list_str = match values with > + | None -> "" > + | Some x -> > + sprintf (f_"Choose one from the list below:\n %s\n") > + (String.concat "\n " x) in > + > + printf "%s%s%s" message default_str list_str; > + > + let value = read_line () in > + match value with > + | "" -> default > + | s -> Some sI'd map also "-" -> None, otherwise it is impossible to choose to not set a value for a field when a default is provided. Note this needs custom handling in ask_id, since an ID is required in interactive mode.> + let ask_osinfo default > + match ask (s_ "osinfo short ID (can be found with osinfo-query os command): ") > + ~default withI'd maybe drop the part in parenthesis, and leave the longer description/hints in the documentation.> + let arch > + if arch = "" then ( > + if interactive then ask_arch inspected_arch > + else inspected_arch; > + ) else arch in > + > + if arch = "" then > + error (f_"missing architecture for %s") id;Maybe ask_arch could take care of keep asking for the architecture until a valid is give, like ask_id does.> + let images > + let is_supported_format file > + let extension = last_part_of file '.' in > + match extension with > + | Some ext -> List.mem ext [ "qcow2"; "raw"; "img" ] > + | None -> file <> "index" in > + let is_new file > + try > + let _, { Index.checksums = checksums } > + List.find ( > + fun (_, { Index.file_uri = file_uri }) -> > + Filename.basename file_uri = file > + ) index in > + let checksum = checksums_get_sha512 checksums in > + let path = cmdline.repo // file in > + let file_checksum = Checksums.compute_checksum "sha512" path in > + checksum <> file_checksum > + with Not_found -> true in > + let files = Array.to_list (Sys.readdir cmdline.repo) inPlease filter 'files' here to ignore anything which is not a regular file (eg directories).> + (* GPG sign the generated index *) > + (match cmdline.gpgkey with > + | None -> > + debug "Skip index signing" > + | Some gpgkey -> > + message (f_"Signing index with GPG key %s") gpgkey; > + let cmd = sprintf "%s --armor --output %s/index.gpg --export %s" > + cmdline.gpg tmprepo gpgkey inPlease quote the paths here -- you will need to quote then as whole: (quote (cmdline.gpg // "index.gpg"))> + if shell_command cmd <> 0 then > + error (f_"failed to export GPG key %s") gpgkey; > + > + let cmd = sprintf "%s --armor --default-key %s --clearsign %s/index" > + cmdline.gpg gpgkey tmprepo inDitto.> +=head1 DESCRIPTION > + > +Virt-builder is a tool for quickly building new virtual machines. It can > +be configured to use template repositories. However creating and > +maintaining a repository involves many tasks which can be automated. > +virt-builder-repository is a tool helping to manage these repositories. > + > +Virt-builder-repository loops over the files in the C</path/to/repository>I'd just say "... in the directory specified as argument, ..."> +folder, compresses the files with a name ending by C<qcow2>, C<raw> or > +C<img>Mention also those without extensions are read. +As in the repository creation use case, a minimal fragment can be> +added to the index file for the automated mode. This can be done > +on the signed index even if it may sound a strange idea: the index > +will be resigned by the tool."resign" means something else, I'd use "signed again".> +=item B<-K> KEYID > + > +=item B<--gpg-key> KEYID > + > +Specify the GPG key to be used to sign the repository index file. > +If not provided, the index will left unsigned. C<KEYID> is used to > +identify the GPG key to use. This value is passed to gpg's > +C<--default-key> option and can can thus be an email address or a > +fingerprint.Double "can".> +B<NOTE>: by default, virt-builder-repository searches for the key > +in the user's GPG key ring."keyring". Thanks, -- Pino Toscano
Reasonably Related Threads
- [PATCH v7 0/9] Introducing virt-builder-repository
- [PATCH v4 0/9] Introducing virt-builder-repository
- [PATCH v5 00/10] Introducing virt-builder-repository
- [PATCH v2 0/7] Introducing virt-builder-repository
- [PATCH v3 00/10] Introducing virt-builder-repository