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https://gitlab.com/libvirt/libvirt.git
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aa296e6c29
Parallels Cloud Server has one serious discrepancy with libvirt: libvirt stores domain configuration files in one place, and storage files in other places (with the API of storage pools and storage volumes). Parallels Cloud Server stores all domain data in a single directory, for example, you may have domain with name fedora-15, which will be located in '/var/parallels/fedora-15.pvm', and it's hard disk image will be in '/var/parallels/fedora-15.pvm/harddisk1.hdd'. I've decided to create storage driver, which produces pseudo-volumes (xml files with volume description), and they will be 'converted' to real disk images after attaching to a VM. So if someone creates VM with one hard disk using virt-manager, at first virt-manager creates a new volume, and then defines a domain. We can lookup a volume by path in XML domain definition and find out location of new domain and size of its hard disk. Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
/*
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* parallels_utils.c: core driver functions for managing
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* Parallels Cloud Server hosts
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*
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* Copyright (C) 2012 Parallels, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#include <config.h>
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#include <stdarg.h>
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#include "command.h"
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#include "virterror_internal.h"
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#include "memory.h"
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#include "json.h"
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#include "parallels_utils.h"
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#define VIR_FROM_THIS VIR_FROM_PARALLELS
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static int
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parallelsDoCmdRun(char **outbuf, const char *binary, va_list list)
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{
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virCommandPtr cmd = virCommandNewVAList(binary, list);
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char *scmd = NULL;
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int ret = -1;
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if (outbuf)
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virCommandSetOutputBuffer(cmd, outbuf);
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scmd = virCommandToString(cmd);
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if (!scmd)
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goto cleanup;
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if (virCommandRun(cmd, NULL))
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goto cleanup;
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ret = 0;
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cleanup:
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VIR_FREE(scmd);
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virCommandFree(cmd);
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if (ret)
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VIR_FREE(*outbuf);
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return ret;
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}
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/*
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* Run command and parse its JSON output, return
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* pointer to virJSONValue or NULL in case of error.
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*/
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virJSONValuePtr
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parallelsParseOutput(const char *binary, ...)
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{
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char *outbuf;
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virJSONValuePtr jobj = NULL;
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va_list list;
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int ret;
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va_start(list, binary);
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ret = parallelsDoCmdRun(&outbuf, binary, list);
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va_end(list);
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if (ret)
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return NULL;
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jobj = virJSONValueFromString(outbuf);
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if (!jobj)
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("invalid output from prlctl: %s"), outbuf);
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VIR_FREE(outbuf);
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return jobj;
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}
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/*
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* Run command and return its output, pointer to
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* buffer or NULL in case of error. Caller os responsible
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* for freeing the buffer.
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*/
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char *
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parallelsGetOutput(const char *binary, ...)
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{
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char *outbuf;
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va_list list;
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int ret;
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va_start(list, binary);
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ret = parallelsDoCmdRun(&outbuf, binary, list);
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va_end(list);
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if (ret)
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return NULL;
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return outbuf;
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}
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/*
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* Run prlctl command and check for errors
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*
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* Return value is 0 in case of success, else - -1
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*/
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int
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parallelsCmdRun(const char *binary, ...)
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{
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int ret;
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va_list list;
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va_start(list, binary);
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ret = parallelsDoCmdRun(NULL, binary, list);
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va_end(list);
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return ret;
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}
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/*
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* Return new file path in malloced string created by
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* concatenating first and second function arguments.
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*/
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char *
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parallelsAddFileExt(const char *path, const char *ext)
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{
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char *new_path = NULL;
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size_t len = strlen(path) + strlen(ext) + 1;
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if (VIR_ALLOC_N(new_path, len) < 0) {
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virReportOOMError();
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return NULL;
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}
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if (!virStrcpy(new_path, path, len))
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return NULL;
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strcat(new_path, ext);
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return new_path;
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}
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