diff options
| author | Eric DeVolder <eric.devolder@oracle.com> | 2017-01-25 09:31:15 -0600 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2017-01-26 11:22:26 +0100 |
| commit | 2cf7cb9a60802cfdbd4ec51439b05b5ac6293ee6 (patch) | |
| tree | 0f2b240544b8050bd2310cf1231d1ac30ffe2ee2 /kexec/kexec-xen.c | |
| parent | 4eaa36cd01a972a602065ebade5ac46d1c81fba9 (diff) | |
kexec: implemented XEN KEXEC STATUS to determine if an image is loaded
Instead of the scripts having to poke at various fields we can
provide that functionality via the -S parameter.
kexec_loaded/kexec_crash_loaded exposes Linux kernel kexec/crash
state. It does not say anything about Xen kexec/crash state. So,
we need a special approach to get the latter. Though for
compatibility we provide similar functionality in kexec-tools
for the former.
This change enables the --status or -S option to work either
with or without Xen.
Returns 0 if the payload is loaded. Can be used in combination
with -l or -p to get the state of the proper kexec image.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'kexec/kexec-xen.c')
| -rw-r--r-- | kexec/kexec-xen.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/kexec/kexec-xen.c b/kexec/kexec-xen.c index 24a4191..2b448d3 100644 --- a/kexec/kexec-xen.c +++ b/kexec/kexec-xen.c @@ -105,6 +105,27 @@ int xen_kexec_unload(uint64_t kexec_flags) return ret; } +int xen_kexec_status(uint64_t kexec_flags) +{ + xc_interface *xch; + uint8_t type; + int ret = -1; + +#ifdef HAVE_KEXEC_CMD_STATUS + xch = xc_interface_open(NULL, NULL, 0); + if (!xch) + return -1; + + type = (kexec_flags & KEXEC_ON_CRASH) ? KEXEC_TYPE_CRASH : KEXEC_TYPE_DEFAULT; + + ret = xc_kexec_status(xch, type); + + xc_interface_close(xch); +#endif + + return ret; +} + void xen_kexec_exec(void) { xc_interface *xch; @@ -130,6 +151,11 @@ int xen_kexec_unload(uint64_t kexec_flags) return -1; } +int xen_kexec_status(uint64_t kexec_flags) +{ + return -1; +} + void xen_kexec_exec(void) { } |