[thirdparty/systemd.git] / src / shared / dissect-image.h

#pragma once

/***
  This file is part of systemd.

  Copyright 2016 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <stdbool.h>

#include "macro.h"

typedef struct DissectedImage DissectedImage;
typedef struct DissectedPartition DissectedPartition;

struct DissectedPartition {
        bool found:1;
        bool rw:1;
        int partno;        /* -1 if there was no partition and the images contains a file system directly */
        int architecture;  /* Intended architecture: either native, secondary or unset (-1). */
        char *fstype;
        char *node;
};

enum  {
        PARTITION_ROOT,
        PARTITION_ROOT_SECONDARY,  /* Secondary architecture */
        PARTITION_HOME,
        PARTITION_SRV,
        PARTITION_ESP,
        PARTITION_SWAP,
        _PARTITION_DESIGNATOR_MAX,
        _PARTITION_DESIGNATOR_INVALID = -1
};

typedef enum DissectedImageMountFlags {
        DISSECTED_IMAGE_READ_ONLY = 1,
        DISSECTED_IMAGE_DISCARD_ON_LOOP = 2, /* Turn on "discard" if on loop device and file system supports it */
} DissectedImageMountFlags;

struct DissectedImage {
        DissectedPartition partitions[_PARTITION_DESIGNATOR_MAX];
};

int dissect_image(int fd, DissectedImage **ret);

DissectedImage* dissected_image_unref(DissectedImage *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(DissectedImage*, dissected_image_unref);

int dissected_image_mount(DissectedImage *m, const char *dest, DissectedImageMountFlags flags);

const char* partition_designator_to_string(int i) _const_;
int partition_designator_from_string(const char *name) _pure_;
Commit	Line	Data
8c1be37e LP	1	#pragma once
	2
	3	/***
	4	This file is part of systemd.
	5
	6	Copyright 2016 Lennart Poettering
	7
	8	systemd is free software; you can redistribute it and/or modify it
	9	under the terms of the GNU Lesser General Public License as published by
	10	the Free Software Foundation; either version 2.1 of the License, or
	11	(at your option) any later version.
	12
	13	systemd is distributed in the hope that it will be useful, but
	14	WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	Lesser General Public License for more details.
	17
	18	You should have received a copy of the GNU Lesser General Public License
	19	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	20	***/
	21
	22	#include <stdbool.h>
	23
	24	#include "macro.h"
	25
	26	typedef struct DissectedImage DissectedImage;
	27	typedef struct DissectedPartition DissectedPartition;
	28
	29	struct DissectedPartition {
	30	bool found:1;
	31	bool rw:1;
	32	int partno; /* -1 if there was no partition and the images contains a file system directly */
	33	int architecture; /* Intended architecture: either native, secondary or unset (-1). */
	34	char *fstype;
	35	char *node;
	36	};
	37
	38	enum {
	39	PARTITION_ROOT,
	40	PARTITION_ROOT_SECONDARY, /* Secondary architecture */
	41	PARTITION_HOME,
	42	PARTITION_SRV,
	43	PARTITION_ESP,
	44	PARTITION_SWAP,
	45	_PARTITION_DESIGNATOR_MAX,
	46	_PARTITION_DESIGNATOR_INVALID = -1
	47	};
	48
	49	typedef enum DissectedImageMountFlags {
	50	DISSECTED_IMAGE_READ_ONLY = 1,
	51	DISSECTED_IMAGE_DISCARD_ON_LOOP = 2, /* Turn on "discard" if on loop device and file system supports it */
	52	} DissectedImageMountFlags;
	53
	54	struct DissectedImage {
	55	DissectedPartition partitions[_PARTITION_DESIGNATOR_MAX];
	56	};
	57
	58	int dissect_image(int fd, DissectedImage **ret);
	59
	60	DissectedImage* dissected_image_unref(DissectedImage *m);
	61	DEFINE_TRIVIAL_CLEANUP_FUNC(DissectedImage*, dissected_image_unref);
	62
	63	int dissected_image_mount(DissectedImage m, const char dest, DissectedImageMountFlags flags);
	64
65	const char* partition_designator_to_string(int i) _const_;
66	int partition_designator_from_string(const char *name) _pure_;