This allows to retrieve the guest's hostname via gethostname(2). This can be useful to identify a VM e.g. one without network.
Signed-off-by: Guido Günther <a...@sigxcpu.org> --- We have an API in libvirt for that (virDomainGetHostname). Cheers -- Guido qapi-schema-guest.json | 12 ++++++++++++ qga/commands-posix.c | 12 ++++++++++++ qga/commands-win32.c | 6 ++++++ 3 files changed, 30 insertions(+) diff --git a/qapi-schema-guest.json b/qapi-schema-guest.json index d955cf1..8c7a4a5 100644 --- a/qapi-schema-guest.json +++ b/qapi-schema-guest.json @@ -515,3 +515,15 @@ ## { 'command': 'guest-network-get-interfaces', 'returns': ['GuestNetworkInterface'] } + +## +# @guest-get-hostname: +# +# Get the guest's hostname +# +# Returns: The guest's hostname +# +# Since: 1.2 +## +{ 'command': 'guest-get-hostname', + 'returns': 'str' } diff --git a/qga/commands-posix.c b/qga/commands-posix.c index ce90421..9223f18 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -15,6 +15,7 @@ #include <sys/types.h> #include <sys/ioctl.h> #include <sys/wait.h> +#include <unistd.h> #include "qga/guest-agent-core.h" #include "qga-qmp-commands.h" #include "qerror.h" @@ -993,6 +994,17 @@ void qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **err) } #endif +char *qmp_guest_get_hostname(Error **err) +{ + char hostname[HOST_NAME_MAX]; + + if (gethostname(hostname, HOST_NAME_MAX)) { + error_set(err, QERR_QGA_COMMAND_FAILED, strerror(errno)); + return NULL; + } + return g_strdup(hostname); +} + /* register init/cleanup routines for stateful command groups */ void ga_command_state_init(GAState *s, GACommandState *cs) { diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 54bc546..55e8162 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -280,6 +280,12 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **err) return NULL; } +char *qmp_guest_get_hostname(Error **err) +{ + error_set(err, QERR_UNSUPPORTED); + return NULL; +} + /* register init/cleanup routines for stateful command groups */ void ga_command_state_init(GAState *s, GACommandState *cs) { -- 1.7.10.4