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Support /etc/ostree/remotes.d

Browse Source 
For many OS install scenarios, one runs through an installer which may
come with embedded data, and then the OS is configured post-install to
receive updates.

In this model, it'd be nice to avoid the post-install having to rewrite
the /ostree/repo/config file.

Additionally, it feels weird for admins to interact with "/ostree" -
let's make the system feel more like Unix and have our important
configuration in /etc.

https://bugzilla.gnome.org/show_bug.cgi?id=729343
This commit is contained in:
Colin Walters 2014-05-08 09:16:36 -04:00
parent 466671407d
commit f47a20fb81
6 changed files with 272 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Makefile-libostree.am
View File

@ -95,7 +95,9 @@ libostree_1_la_SOURCES += \
$(NULL)
endif
libostree_1_la_CFLAGS = $(AM_CFLAGS) -I$(srcdir)/src/libotutil -I$(srcdir)/src/libostree -DLOCALEDIR=\"$(datadir)/locale\" -DGPGVPATH=\"$(GPGVPATH)\" $(OT_INTERNAL_GIO_UNIX_CFLAGS) $(OT_DEP_LZMA_CFLAGS)
libostree_1_la_CFLAGS = $(AM_CFLAGS) -I$(srcdir)/src/libotutil -I$(srcdir)/src/libostree \
-DLOCALEDIR=\"$(datadir)/locale\" -DSYSCONFDIR=\"$(sysconfdir)\" \
-DGPGVPATH=\"$(GPGVPATH)\" $(OT_INTERNAL_GIO_UNIX_CFLAGS) $(OT_DEP_LZMA_CFLAGS)
libostree_1_la_LDFLAGS = -version-number 1:0:0 -Bsymbolic-functions -export-symbols-regex '^ostree_'
libostree_1_la_LIBADD = libotutil.la libostree-kernel-args.la $(OT_INTERNAL_GIO_UNIX_LIBS) $(OT_DEP_LZMA_LIBS)
@ -139,3 +141,6 @@ gpgreadmedir = $(pkgdatadir)/trusted.gpg.d
EXTRA_DIST += src/libostree/README-gpg
endif
install-mkdir-remotes-d-hook:
mkdir -p $(sysconfdir)/ostree/remotes.d
INSTALL_DATA_HOOKS += install-mkdir-remotes-d-hook

4
Makefile-ostree.am
View File

@ -70,7 +70,9 @@ ostree_SOURCES += \
src/ostree/ot-admin-functions.c \
$(NULL)
ostree_bin_shared_cflags = $(AM_CFLAGS) -I$(srcdir)/src/libotutil -I$(srcdir)/src/libostree -I$(srcdir)/src/ostree -DLOCALEDIR=\"$(datadir)/locale\"
ostree_bin_shared_cflags = $(AM_CFLAGS) -I$(srcdir)/src/libotutil -I$(srcdir)/src/libostree -I$(srcdir)/src/ostree \
-DLOCALEDIR=\"$(datadir)/locale\" -DSYSCONFDIR=\"$(sysconfdir)\" \
$(NULL)
ostree_bin_shared_ldadd = libotutil.la libostree-kernel-args.la libostree-1.la
ostree_CFLAGS = $(ostree_bin_shared_cflags) $(OT_INTERNAL_GIO_UNIX_CFLAGS)

13
doc/ostree.repo-config.xml
View File

@ -131,6 +131,19 @@ Boston, MA 02111-1307, USA.
</variablelist>
</refsect1>
<refsect1>
<title>/etc/ostree/remotes.d</title>
<para>
In addition to the <filename>/ostree/repo/config</filename>
file, remotes may also be specified in
<filename>/etc/ostree/remotes.d</filename>. The remote
configuration file must end in <literal>.conf</literal>; files
whose name does not end in <literal>.conf</literal> will be
ignored.
</para>
</refsect1>
<refsect1>
<title>See Also</title>

155
src/libostree/ostree-repo.c
View File

@ -224,6 +224,12 @@ ostree_repo_new (GFile *path)
return g_object_new (OSTREE_TYPE_REPO, "path", path, NULL);
}
static GFile *
get_default_repo_path (void)
{
return g_file_new_for_path ("/ostree/repo");
}
/**
* ostree_repo_new_default:
*
@ -245,11 +251,24 @@ ostree_repo_new_default (void)
}
else
{
gs_unref_object GFile *default_repo_path = g_file_new_for_path ("/ostree/repo");
gs_unref_object GFile *default_repo_path = get_default_repo_path ();
return ostree_repo_new (default_repo_path);
}
}
/**
* ostree_repo_is_system:
* @repo: Repository
*
* Returns: %TRUE if this repository is the root-owned system global repository
*/
gboolean
ostree_repo_is_system (OstreeRepo *repo)
{
gs_unref_object GFile *default_repo_path = get_default_repo_path ();
return g_file_equal (repo->repodir, default_repo_path);
}
/**
* ostree_repo_get_config:
* @self:
@ -452,6 +471,137 @@ ostree_repo_create (OstreeRepo *self,
return ret;
}
static gboolean
enumerate_directory_allow_noent (GFile *dirpath,
const char *queryargs,
GFileQueryInfoFlags queryflags,
GFileEnumerator **out_direnum,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
GError *temp_error = NULL;
gs_unref_object GFileEnumerator *ret_direnum = NULL;
ret_direnum = g_file_enumerate_children (dirpath, queryargs, queryflags,
cancellable, &temp_error);
if (!ret_direnum)
{
if (g_error_matches (temp_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
g_clear_error (&temp_error);
ret = TRUE;
}
else
g_propagate_error (error, temp_error);
goto out;
}
ret = TRUE;
gs_transfer_out_value (out_direnum, &ret_direnum);
out:
return ret;
}
GS_DEFINE_CLEANUP_FUNCTION0(GKeyFile*, local_keyfile_unref, g_key_file_unref)
#define local_cleanup_keyfile __attribute__ ((cleanup(local_keyfile_unref)))
static gboolean
append_one_remote_config (OstreeRepo *self,
GFile *path,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
local_cleanup_keyfile GKeyFile *remotedata = g_key_file_new ();
gs_strfreev char **groups = NULL;
char **iter;
if (!g_key_file_load_from_file (remotedata, gs_file_get_path_cached (path),
0, error))
goto out;
groups = g_key_file_get_groups (remotedata, NULL);
for (iter = groups; iter && *iter; iter++)
{
const char *group = *iter;
char **subiter;
gs_strfreev char **keys = NULL;
/* Whitelist of allowed groups for now */
if (!g_str_has_prefix (group, "remote \""))
continue;
if (g_key_file_has_group (self->config, group))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Multiple specifications found for %s", group);
goto out;
}
keys = g_key_file_get_keys (remotedata, group, NULL, NULL);
g_assert (keys);
for (subiter = keys; subiter && *subiter; subiter++)
{
const char *key = *subiter;
gs_free char *value = g_key_file_get_value (remotedata, group, key, NULL);
g_assert (value);
g_key_file_set_value (self->config, group, key, value);
}
}
ret = TRUE;
out:
return ret;
}
static gboolean
append_remotes_d (OstreeRepo *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_object GFile *etc_ostree_remotes_d = NULL;
gs_unref_object GFileEnumerator *direnum = NULL;
etc_ostree_remotes_d = g_file_new_for_path (SYSCONFDIR "/ostree/remotes.d");
if (!enumerate_directory_allow_noent (etc_ostree_remotes_d, OSTREE_GIO_FAST_QUERYINFO, 0,
&direnum,
cancellable, error))
goto out;
if (direnum)
{
while (TRUE)
{
GFileInfo *file_info;
GFile *path;
const char *name;
guint32 type;
if (!gs_file_enumerator_iterate (direnum, &file_info, &path,
NULL, error))
goto out;
if (file_info == NULL)
break;
name = g_file_info_get_attribute_byte_string (file_info, "standard::name");
type = g_file_info_get_attribute_uint32 (file_info, "standard::type");
if (type == G_FILE_TYPE_REGULAR &&
g_str_has_suffix (name, ".conf"))
{
if (!append_one_remote_config (self, path, cancellable, error))
goto out;
}
}
}
ret = TRUE;
out:
return ret;
}
gboolean
ostree_repo_open (OstreeRepo *self,
GCancellable *cancellable,
@ -532,6 +682,9 @@ ostree_repo_open (OstreeRepo *self,
TRUE, &self->enable_uncompressed_cache, error))
goto out;
if (!append_remotes_d (self, cancellable, error))
goto out;
if (!gs_file_open_dir_fd (self->objects_dir, &self->objects_dir_fd, cancellable, error))
goto out;

2
src/libostree/ostree-repo.h
View File

@ -52,6 +52,8 @@ gboolean ostree_repo_open (OstreeRepo *self,
void ostree_repo_set_disable_fsync (OstreeRepo *self,
gboolean disable_fsync);
gboolean ostree_repo_is_system (OstreeRepo *repo);
gboolean ostree_repo_create (OstreeRepo *self,
OstreeRepoMode mode,
GCancellable *cancellable,

117
src/ostree/ot-builtin-remote.c
View File

@ -63,6 +63,47 @@ parse_keyvalue (const char *keyvalue,
return TRUE;
}
GS_DEFINE_CLEANUP_FUNCTION0(GKeyFile*, local_keyfile_unref, g_key_file_unref)
#define local_cleanup_keyfile __attribute__ ((cleanup(local_keyfile_unref)))
static gboolean
add_remote_to_keyfile (GKeyFile *new_keyfile,
const char *key,
const char *url,
GPtrArray *branches,
GError **error)
{
gboolean ret = FALSE;
char **iter;
g_key_file_set_string (new_keyfile, key, "url", url);
for (iter = opt_set; iter && *iter; iter++)
{
const char *keyvalue = *iter;
gs_free char *subkey = NULL;
gs_free char *subvalue = NULL;
if (!parse_keyvalue (keyvalue, &subkey, &subvalue, error))
goto out;
g_key_file_set_string (new_keyfile, key, subkey, subvalue);
}
if (branches->len > 0)
g_key_file_set_string_list (new_keyfile, key, "branches",
(const char *const *)branches->pdata,
branches->len);
if (opt_no_gpg_verify)
g_key_file_set_boolean (new_keyfile, key, "gpg-verify", FALSE);
ret = TRUE;
out:
return ret;
}
gboolean
ostree_builtin_remote (int argc, char **argv, OstreeRepo *repo, GCancellable *cancellable, GError **error)
{
@ -71,8 +112,8 @@ ostree_builtin_remote (int argc, char **argv, OstreeRepo *repo, GCancellable *ca
const char *op;
gs_free char *key = NULL;
guint i;
gs_unref_ptrarray GPtrArray *branches = NULL;
GKeyFile *config = NULL;
const char *remote_name;
context = g_option_context_new ("OPERATION NAME [args] - Control remote repository configuration");
g_option_context_add_main_entries (context, options, NULL);
@ -91,13 +132,29 @@ ostree_builtin_remote (int argc, char **argv, OstreeRepo *repo, GCancellable *ca
}
op = argv[1];
key = g_strdup_printf ("remote \"%s\"", argv[2]);
remote_name = argv[2];
key = g_strdup_printf ("remote \"%s\"", remote_name);
config = ostree_repo_copy_config (repo);
if (!strcmp (op, "add"))
{
char **iter;
const char *url = argv[3];
gs_unref_object GFile *etc_ostree_remotes_d = g_file_new_for_path (SYSCONFDIR "/ostree/remotes.d");
gs_free char *target_name = NULL;
gs_unref_object GFile *target_conf = NULL;
local_cleanup_keyfile GKeyFile *new_keyfile = NULL;
GKeyFile *target_keyfile = NULL;
gs_unref_ptrarray GPtrArray *branches = NULL;
if (strchr (remote_name, '/') != NULL)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Invalid character '/' in remote name: %s",
remote_name);
goto out;
}
if (argc < 4)
{
usage_error (context, "URL must be specified", error);
@ -108,29 +165,46 @@ ostree_builtin_remote (int argc, char **argv, OstreeRepo *repo, GCancellable *ca
for (i = 4; i < argc; i++)
g_ptr_array_add (branches, argv[i]);
g_key_file_set_string (config, key, "url", argv[3]);
for (iter = opt_set; iter && *iter; iter++)
if (ostree_repo_is_system (repo))
{
const char *keyvalue = *iter;
gs_free char *subkey = NULL;
gs_free char *subvalue = NULL;
new_keyfile = g_key_file_new ();
if (!parse_keyvalue (keyvalue, &subkey, &subvalue, error))
goto out;
target_keyfile = new_keyfile;
g_key_file_set_string (config, key, subkey, subvalue);
target_name = g_strconcat (remote_name, ".conf", NULL);
target_conf = g_file_get_child (etc_ostree_remotes_d, target_name);
if (g_file_query_exists (target_conf, NULL))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Remote configuration already exists: %s",
gs_file_get_path_cached (target_conf));
goto out;
}
}
else
{
target_keyfile = config;
}
if (branches->len > 0)
g_key_file_set_string_list (config, key, "branches",
(const char *const *)branches->pdata,
branches->len);
if (!add_remote_to_keyfile (target_keyfile, key, url, branches, error))
goto out;
if (opt_no_gpg_verify)
g_key_file_set_boolean (config, key, "gpg-verify", FALSE);
g_free (key);
/* For the system repository, write to /etc/ostree/remotes.d */
if (ostree_repo_is_system (repo))
{
gsize len;
gs_free char *data = g_key_file_to_data (target_keyfile, &len, error);
if (!g_file_replace_contents (target_conf, data, len,
NULL, FALSE, 0, NULL,
cancellable, error))
goto out;
}
else
{
if (!ostree_repo_write_config (repo, config, error))
goto out;
}
}
else if (!strcmp (op, "show-url"))
{
@ -147,9 +221,6 @@ ostree_builtin_remote (int argc, char **argv, OstreeRepo *repo, GCancellable *ca
usage_error (context, "Unknown operation", error);
goto out;
}
if (!ostree_repo_write_config (repo, config, error))
goto out;
ret = TRUE;
out: