[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] tools: Create xc_domain_getinfo_single()
commit 7c7c436ccb9c684f44a184324fd8920b12f93a4d Author: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx> AuthorDate: Fri Apr 28 11:41:19 2023 +0100 Commit: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> CommitDate: Fri Apr 28 14:34:40 2023 +0100 tools: Create xc_domain_getinfo_single() It's a stricter version of xc_domain_getinfo() where the returned domid always matches the requested domid or the error code shows an error instead. A few patches ahead usages of xc_domain_getinfo() are removed until only xc_domain_getinfo_single() and xc_domain_getinfolist() remain. Signed-off-by: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx> Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> --- tools/include/xenctrl.h | 16 ++++++++++++++++ tools/libs/ctrl/xc_domain.c | 24 ++++++++++++++++++++++++ 2 files changed, 40 insertions(+) diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h index 5d709386b6..752fc87580 100644 --- a/tools/include/xenctrl.h +++ b/tools/include/xenctrl.h @@ -704,6 +704,22 @@ int xc_vcpu_getaffinity(xc_interface *xch, int xc_domain_get_guest_width(xc_interface *xch, uint32_t domid, unsigned int *guest_width); +/** + * This function will return information about a single domain. It looks + * up the domain by the provided domid and succeeds if the domain exists + * and is accesible by the current domain, or fails otherwise. A buffer + * may optionally passed on the `info` parameter in order to retrieve + * information about the domain. The buffer is ignored if NULL is + * passed instead. + * + * @parm xch a handle to an open hypervisor interface + * @parm domid domid to lookup + * @parm info Optional domain information buffer (may be NULL) + * @return 0 on success, otherwise the call failed and info is undefined + */ +int xc_domain_getinfo_single(xc_interface *xch, + uint32_t domid, + xc_domaininfo_t *info); /** * This function will return information about one or more domains. It is diff --git a/tools/libs/ctrl/xc_domain.c b/tools/libs/ctrl/xc_domain.c index e939d07157..d5f0923088 100644 --- a/tools/libs/ctrl/xc_domain.c +++ b/tools/libs/ctrl/xc_domain.c @@ -345,6 +345,30 @@ int xc_dom_vuart_init(xc_interface *xch, return rc; } +int xc_domain_getinfo_single(xc_interface *xch, + uint32_t domid, + xc_domaininfo_t *info) +{ + struct xen_domctl domctl = { + .cmd = XEN_DOMCTL_getdomaininfo, + .domain = domid, + }; + + if ( do_domctl(xch, &domctl) < 0 ) + return -1; + + if ( domctl.u.getdomaininfo.domain != domid ) + { + errno = ESRCH; + return -1; + } + + if ( info ) + *info = domctl.u.getdomaininfo; + + return 0; +} + int xc_domain_getinfo(xc_interface *xch, uint32_t first_domid, unsigned int max_doms, -- generated by git-patchbot for /home/xen/git/xen.git#master
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |