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Ian Jackson
8fc051a10f
Move a lot of #include <stdfoo.h> from individual files into libxl_internal.h. This helps avoid portability mistakes where necessary system headers are omitted from individual files, and is also of course a convenience when developing. Also add #include "libxl_osdeps.h" /* must come before any other headers */ to the top of most libxl*.c files, so that anyone who adds any headers before libxl_internal.h will put the in the right place. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
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* Copyright (C) 2010 Advanced Micro Devices
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* Author Christoph Egger <Christoph.Egger@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only.
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*
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* This program 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
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* GNU Lesser General Public License for more details.
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*/
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#include "libxl_osdeps.h" /* must come before any other headers */
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#include "libxl_internal.h"
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#include "tap-ctl.h"
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int libxl__blktap_enabled(libxl__gc *gc)
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{
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const char *msg;
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return !tap_ctl_check(&msg);
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}
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char *libxl__blktap_devpath(libxl__gc *gc,
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const char *disk,
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libxl_disk_format format)
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{
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const char *type;
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char *params, *devname = NULL;
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tap_list_t tap;
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int err;
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type = libxl__device_disk_string_of_format(format);
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err = tap_ctl_find(type, disk, &tap);
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if (err == 0) {
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devname = libxl__sprintf(gc, "/dev/xen/blktap-2/tapdev%d", tap.minor);
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if (devname)
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return devname;
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}
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params = libxl__sprintf(gc, "%s:%s", type, disk);
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err = tap_ctl_create(params, &devname);
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if (!err) {
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libxl__ptr_add(gc, devname);
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return devname;
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}
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return NULL;
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}
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void libxl__device_destroy_tapdisk(libxl__gc *gc, char *be_path)
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{
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char *path, *params, *type, *disk;
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int err;
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tap_list_t tap;
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path = libxl__sprintf(gc, "%s/tapdisk-params", be_path);
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if (!path) return;
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params = libxl__xs_read(gc, XBT_NULL, path);
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if (!params) return;
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type = params;
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disk = strchr(params, ':');
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if (!disk) return;
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*disk++ = '\0';
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err = tap_ctl_find(type, disk, &tap);
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if (err < 0) return;
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tap_ctl_destroy(tap.id, tap.minor);
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}
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/*
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* Local variables:
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* mode: C
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* c-basic-offset: 4
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* indent-tabs-mode: nil
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* End:
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*/
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