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core: add nm_utils_new_infiniband_name() util

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This commit is contained in:
Thomas Haller 2016-04-20 10:45:31 +02:00
parent 67d45ea1d3
commit 8f7029d132
2 changed files with 28 additions and 0 deletions
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27
src/nm-core-utils.c
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@ -1866,6 +1866,33 @@ nm_utils_new_vlan_name (const char *parent_iface, guint32 vlan_id)
return ifname;
}
/* nm_utils_new_infiniband_name:
* @name: the output-buffer where the value will be written. Must be
* not %NULL and point to a string buffer of at least IFNAMSIZ bytes.
* @parent_name: the parent interface name
* @p_key: the partition key.
*
* Returns: the infiniband name will be written to @name and @name
* is returned.
*/
const char *
nm_utils_new_infiniband_name (char *name, const char *parent_name, int p_key)
{
g_return_val_if_fail (name, NULL);
g_return_val_if_fail (parent_name && parent_name[0], NULL);
g_return_val_if_fail (strlen (parent_name) < IFNAMSIZ, NULL);
/* technically, p_key of 0x0000 and 0x8000 is not allowed either. But we don't
* want to assert against that in nm_utils_new_infiniband_name(). So be more
* resilient here, and accept those. */
g_return_val_if_fail (p_key >= 0 && p_key <= 0xffff, NULL);
/* If parent+suffix is too long, kernel would just truncate
* the name. We do the same. See ipoib_vlan_add(). */
g_snprintf (name, IFNAMSIZ, "%s.%04x", parent_name, p_key);
return name;
}
/**
* nm_utils_read_resolv_conf_nameservers():
* @rc_contents: contents of a resolv.conf; or %NULL to read /etc/resolv.conf

1
src/nm-core-utils.h
View file

@ -281,6 +281,7 @@ const char *nm_utils_get_ip_config_method (NMConnection *connection,
GType ip_setting_type);
char *nm_utils_new_vlan_name (const char *parent_iface, guint32 vlan_id);
const char *nm_utils_new_infiniband_name (char *name, const char *parent_name, int p_key);
GPtrArray *nm_utils_read_resolv_conf_nameservers (const char *rc_contents);
GPtrArray *nm_utils_read_resolv_conf_dns_options (const char *rc_contents);