diff options
Diffstat (limited to 'src/network/networkd-manager.c')
| -rw-r--r-- | src/network/networkd-manager.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c index 28de7919da..4b29553330 100644 --- a/src/network/networkd-manager.c +++ b/src/network/networkd-manager.c @@ -20,6 +20,7 @@ ***/ #include <resolv.h> +#include <linux/if.h> #include "path-util.h" #include "networkd.h" @@ -80,6 +81,10 @@ int manager_new(Manager **ret) { if (!m) return -ENOMEM; + m->state_file = strdup("/run/systemd/network/state"); + if (!m->state_file) + return -ENOMEM; + r = sd_event_default(&m->event); if (r < 0) return r; @@ -135,6 +140,8 @@ void manager_free(Manager *m) { if (!m) return; + free(m->state_file); + udev_monitor_unref(m->udev_monitor); udev_unref(m->udev); sd_bus_unref(m->bus); @@ -457,3 +464,55 @@ int manager_update_resolv_conf(Manager *m) { return 0; } + +int manager_save(Manager *m) { + Link *link; + Iterator i; + _cleanup_free_ char *temp_path = NULL; + _cleanup_fclose_ FILE *f = NULL; + const char *oper_state = "unknown"; + bool dormant, carrier; + int r; + + assert(m); + assert(m->state_file); + + HASHMAP_FOREACH(link, m->links, i) { + if (link->flags & IFF_LOOPBACK) + continue; + + if (link_has_carrier(link->flags, link->operstate)) + carrier = true; + else if (link->operstate == IF_OPER_DORMANT) + dormant = true; + } + + if (carrier) + oper_state = "carrier"; + else if (dormant) + oper_state = "dormant"; + + r = fopen_temporary(m->state_file, &f, &temp_path); + if (r < 0) + goto finish; + + fchmod(fileno(f), 0644); + + fprintf(f, + "# This is private data. Do not parse.\n" + "OPER_STATE=%s\n", oper_state); + + fflush(f); + + if (ferror(f) || rename(temp_path, m->state_file) < 0) { + r = -errno; + unlink(m->state_file); + unlink(temp_path); + } + +finish: + if (r < 0) + log_error("Failed to save network state to %s: %s", m->state_file, strerror(-r)); + + return r; +} |