[libvirt] [PATCH sandbox v5 16/20] Add config for environment variables
Cedric Bosdonnat
cbosdonnat at suse.com
Wed Sep 9 12:13:18 UTC 2015
On Tue, 2015-09-08 at 17:29 +0100, Daniel P. Berrange wrote:
> From: Eren Yagdiran <erenyagdiran at gmail.com>
>
> Add the config gobject to store custom environment variables.
> This will allow creating custom environment variables on a sandbox
> with a parameter formatted like --env key1=val1
>
> Add testcase for custom environment variables
>
> "make check" now includes testcase for environment variables
>
> Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
> ---
> libvirt-sandbox/libvirt-sandbox-config.c | 171 ++++++++++++++++++++++++++++++-
> libvirt-sandbox/libvirt-sandbox-config.h | 13 +++
> libvirt-sandbox/libvirt-sandbox.sym | 9 ++
> libvirt-sandbox/tests/test-config.c | 10 ++
> 4 files changed, 202 insertions(+), 1 deletion(-)
>
> diff --git a/libvirt-sandbox/libvirt-sandbox-config.c b/libvirt-sandbox/libvirt-sandbox-config.c
> index 2506072..780d174 100644
> --- a/libvirt-sandbox/libvirt-sandbox-config.c
> +++ b/libvirt-sandbox/libvirt-sandbox-config.c
> @@ -64,6 +64,7 @@ struct _GVirSandboxConfigPrivate
> GList *networks;
> GList *mounts;
> GList *disks;
> + GHashTable* envs;
>
> gchar *secLabel;
> gboolean secDynamic;
> @@ -276,6 +277,8 @@ static void gvir_sandbox_config_finalize(GObject *object)
> g_list_foreach(priv->networks, (GFunc)g_object_unref, NULL);
> g_list_free(priv->networks);
>
> + g_hash_table_destroy(priv->envs);
> +
> g_list_foreach(priv->disks, (GFunc)g_object_unref, NULL);
> g_list_free(priv->disks);
>
> @@ -483,6 +486,7 @@ static void gvir_sandbox_config_init(GVirSandboxConfig *config)
> priv->arch = g_strdup(uts.machine);
> priv->secDynamic = TRUE;
>
> + priv->envs = g_hash_table_new(g_str_hash, g_str_equal);
> priv->uid = geteuid();
> priv->gid = getegid();
> priv->username = g_strdup(g_get_user_name());
> @@ -1144,6 +1148,102 @@ gboolean gvir_sandbox_config_has_networks(GVirSandboxConfig *config)
> return priv->networks ? TRUE : FALSE;
> }
>
> +/**
> + * gvir_sandbox_config_add_env:
> + * @config: (transfer none): the sandbox config
> + * @key: (transfer none): the key for environment variable
> + * @value: (transfer none): the value for environment variable
> + *
> + * Adds a new environment variable to the sandbox
> + *
> + */
> +void gvir_sandbox_config_add_env(GVirSandboxConfig *config,
> + gchar *k,
> + gchar *v)
> +{
> + gchar * key = g_strdup(k);
> + gchar * value = g_strdup(v);
> + GVirSandboxConfigPrivate *priv = config->priv;
> + g_hash_table_insert(priv->envs,key,value);
> +}
> +
> +/**
> + * gvir_sandbox_config_get_envs:
> + * @config: (transfer none): the sandbox config
> + *
> + * Retrieves the hashtable of custom environment variables in the sandbox
> + *
> + * Returns: (transfer full) (element-type gchar gchar): the hashtable of environment variables
> + */
> +GHashTable *gvir_sandbox_config_get_envs(GVirSandboxConfig *config)
> +{
> + GVirSandboxConfigPrivate *priv = config->priv;
> + return priv->envs;
> +}
> +
> +/**
> + * gvir_sandbox_config_add_env_strv:
> + * @config: (transfer none): the sandbox config
> + * @envs: (transfer none)(array zero-terminated=1): the list of environment variables
> + *
> + * Parses @envs whose elements are in the format KEY=VALUE
> + *
> + * --env KEY=VALUE
> + */
> +gboolean gvir_sandbox_config_add_env_strv(GVirSandboxConfig *config,
> + gchar **envs,
> + GError **error)
> +{
> + gsize i = 0;
> + while (envs && envs[i]) {
> + if (!gvir_sandbox_config_add_env_opts(config,
> + envs[i],
> + error))
> + return FALSE;
> + i++;
> + }
> + return TRUE;
> +}
> +
> +/**
> + * gvir_sandbox_config_add_env_opts:
> + * @config: (transfer none): the sandbox config
> + * @env: (transfer none): the env config
> + *
> + * Parses @env in the format KEY=VALUE
> + * creating #GVirSandboxConfigEnv instances for each element. For
> + * example
> + *
> + * --env KEY=VALUE
> + */
> +
> +gboolean gvir_sandbox_config_add_env_opts(GVirSandboxConfig *config,
> + const char *opt,
> + GError **error)
> +{
> + gchar *tmp = NULL;
> + gchar *key = NULL;
> + gchar *value = NULL;
> +
> + if (!(tmp = g_strdup(opt)))
> + return FALSE;
> +
> + key = strchr(tmp, '=');
> +
> + if (!key) {
> + g_set_error(error, GVIR_SANDBOX_CONFIG_ERROR, 0,
> + _("Wrong environment format on %s"), opt);
> + return FALSE;
> + }
> +
> + *key = '\0';
> + value = key + 1;
> +
> + gvir_sandbox_config_add_env(config, tmp, value);
> +
> + g_free(tmp);
> + return TRUE;
> +}
>
> /**
> * gvir_sandbox_config_add_disk:
> @@ -1163,7 +1263,6 @@ void gvir_sandbox_config_add_disk(GVirSandboxConfig *config,
> priv->disks = g_list_append(priv->disks, dsk);
> }
>
> -
> /**
> * gvir_sandbox_config_get_disks:
> * @config: (transfer none): the sandbox config
> @@ -1172,6 +1271,7 @@ void gvir_sandbox_config_add_disk(GVirSandboxConfig *config,
> *
> * Returns: (transfer full) (element-type GVirSandboxConfigMount): the list of disks
> */
> +
> GList *gvir_sandbox_config_get_disks(GVirSandboxConfig *config)
> {
> GVirSandboxConfigPrivate *priv = config->priv;
> @@ -1949,6 +2049,39 @@ static GVirSandboxConfigMount *gvir_sandbox_config_load_config_mount(GKeyFile *f
> goto cleanup;
> }
>
> +static gboolean gvir_sandbox_config_load_config_env(GKeyFile *file,
> + guint i,
> + GError **error,
> + gchar **key,
> + gchar **value)
> +{
> + gboolean ret = TRUE;
> + gchar *index = NULL;
> + GError *e = NULL;
> + index = g_strdup_printf("env.%u", i);
> + if ((*key = g_key_file_get_string(file, index, "key", &e)) == NULL) {
> + if (e->code == G_KEY_FILE_ERROR_GROUP_NOT_FOUND) {
> + g_error_free(e);
> + ret = FALSE;
> + goto cleanup;
> + }
> + g_error_free(e);
> + g_set_error(error, GVIR_SANDBOX_CONFIG_ERROR, 0,
> + "%s", _("Missing environment key in config file"));
> + ret = FALSE;
> + goto cleanup;
> + }
> + if ((*value = g_key_file_get_string(file, index, "value", NULL)) == NULL) {
> + g_set_error(error, GVIR_SANDBOX_CONFIG_ERROR, 0,
> + "%s", _("Missing environment value in config file"));
> + ret = FALSE;
> + goto cleanup;
> + }
> +
> + cleanup:
> + g_free(index);
> + return ret;
> +}
>
> static GVirSandboxConfigDisk *gvir_sandbox_config_load_config_disk(GKeyFile *file,
> guint i,
> @@ -2244,6 +2377,19 @@ static gboolean gvir_sandbox_config_load_config(GVirSandboxConfig *config,
> priv->mounts = g_list_append(priv->mounts, mount);
> }
>
> + for (i = 0 ; i < 1024; i++) {
> + gchar *key = NULL;
> + gchar *value = NULL;
> + if (!(gvir_sandbox_config_load_config_env(file, i, error,&key,&value)) && *error){
> + g_free(key);
> + g_free(value);
> + ret = FALSE;
> + goto cleanup;
> + }
> + if (key){
> + g_hash_table_insert(priv->envs,key,value);
> + }
> + }
>
> for (i = 0 ; i < 1024 ; i++) {
> GVirSandboxConfigDisk *disk;
> @@ -2274,6 +2420,19 @@ static gboolean gvir_sandbox_config_load_config(GVirSandboxConfig *config,
> return ret;
> }
>
> +static void gvir_sandbox_config_save_config_env(gchar *key,
> + gchar *value,
> + GKeyFile *file,
> + guint i)
> +{
> + gchar *index = NULL;
> + index = g_strdup_printf("env.%u", i);
> + g_key_file_set_string(file, index, "key",key);
> + g_key_file_set_string(file, index, "value",value);
> + g_free(index);
> + g_free(key);
> + g_free(value);
> +}
>
> static void gvir_sandbox_config_save_config_disk(GVirSandboxConfigDisk *config,
> GKeyFile *file,
> @@ -2484,6 +2643,16 @@ static void gvir_sandbox_config_save_config(GVirSandboxConfig *config,
> i++;
> }
>
> +
> + GHashTableIter iter;
> + gpointer key, value;
> + i = 0;
> + g_hash_table_iter_init (&iter, priv->envs);
> + while (g_hash_table_iter_next (&iter, &key, &value)){
> + gvir_sandbox_config_save_config_env(key,value,file,i);
> + i++;
> + }
> +
> i = 0;
> tmp = priv->disks;
> while (tmp) {
> diff --git a/libvirt-sandbox/libvirt-sandbox-config.h b/libvirt-sandbox/libvirt-sandbox-config.h
> index 2c5f0a6..e5e53f7 100644
> --- a/libvirt-sandbox/libvirt-sandbox-config.h
> +++ b/libvirt-sandbox/libvirt-sandbox-config.h
> @@ -122,6 +122,19 @@ gboolean gvir_sandbox_config_add_network_strv(GVirSandboxConfig *config,
> GError **error);
> gboolean gvir_sandbox_config_has_networks(GVirSandboxConfig *config);
>
> +void gvir_sandbox_config_add_env(GVirSandboxConfig *config,
> + gchar *key,
> + gchar *value);
> +GHashTable *gvir_sandbox_config_get_envs(GVirSandboxConfig *config);
> +gboolean gvir_sandbox_config_add_env_strv(GVirSandboxConfig *config,
> + gchar **envs,
> + GError **error);
> +gboolean gvir_sandbox_config_add_env_opts(GVirSandboxConfig *config,
> + const char *env,
> + GError **error);
> +gboolean gvir_sandbox_config_has_envs(GVirSandboxConfig *config);
> +
> +
> void gvir_sandbox_config_add_disk(GVirSandboxConfig *config,
> GVirSandboxConfigDisk *dsk);
> GList *gvir_sandbox_config_get_disks(GVirSandboxConfig *config);
> diff --git a/libvirt-sandbox/libvirt-sandbox.sym b/libvirt-sandbox/libvirt-sandbox.sym
> index 6f8097a..b7c5921 100644
> --- a/libvirt-sandbox/libvirt-sandbox.sym
> +++ b/libvirt-sandbox/libvirt-sandbox.sym
> @@ -217,3 +217,12 @@ LIBVIRT_SANDBOX_0.6.0 {
> local:
> *;
> };
> +
> +LIBVIRT_SANDBOX_0.6.1 {
> + global:
> + gvir_sandbox_config_add_env;
> + gvir_sandbox_config_add_env_strv;
> + gvir_sandbox_config_add_env_opts;
> + gvir_sandbox_config_env_get_type;
> + gvir_sandbox_config_has_envs;
> +} LIBVIRT_SANDBOX_0.6.0;
> diff --git a/libvirt-sandbox/tests/test-config.c b/libvirt-sandbox/tests/test-config.c
> index da05187..ac10bab 100644
> --- a/libvirt-sandbox/tests/test-config.c
> +++ b/libvirt-sandbox/tests/test-config.c
> @@ -58,6 +58,13 @@ int main(int argc, char **argv)
> "host-bind:/tmp=",
> NULL
> };
> +
> + const gchar *envs[] = {
> + "key1=val1",
> + "key2=val2",
> + NULL
> + };
> +
> const gchar *disks[] = {
> "file:dbdata=/tmp/img.blah,format=qcow2",
> "file:cache=/tmp/img.qcow2",
> @@ -103,6 +110,9 @@ int main(int argc, char **argv)
> if (!gvir_sandbox_config_add_mount_strv(cfg1, (gchar**)mounts, &err))
> goto cleanup;
>
> + if (!gvir_sandbox_config_add_env_strv(cfg1, (gchar**)envs, &err))
> + goto cleanup;
> +
> if (!gvir_sandbox_config_add_disk_strv(cfg1, (gchar**)disks, &err))
> goto cleanup;
>
ACK
--
Cedric
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