aboutsummaryrefslogtreecommitdiff
path: root/lib/common/writer/init.c
blob: d606d260b8aea9235466acfb00d081cb2e6cba0f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
 * init.c
 *
 * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
 */
#include "simple_writer.h"
#include "compress_cli.h"
#include "common.h"

#include <string.h>
#include <stdlib.h>

#ifdef HAVE_SYS_SYSINFO_H
#include <sys/sysinfo.h>

static size_t os_get_num_jobs(void)
{
	int nprocs;

	nprocs = get_nprocs_conf();
	return nprocs < 1 ? 1 : nprocs;
}
#else
static size_t os_get_num_jobs(void)
{
	return 1;
}
#endif

void sqfs_writer_cfg_init(sqfs_writer_cfg_t *cfg)
{
	memset(cfg, 0, sizeof(*cfg));

	cfg->num_jobs = os_get_num_jobs();
	cfg->block_size = SQFS_DEFAULT_BLOCK_SIZE;
	cfg->devblksize = SQFS_DEVBLK_SIZE;
	cfg->comp_id = compressor_get_default();
}

int sqfs_writer_init(sqfs_writer_t *sqfs, const sqfs_writer_cfg_t *wrcfg)
{
	sqfs_compressor_config_t cfg;
	int ret, flags;

	sqfs->filename = wrcfg->filename;

	if (compressor_cfg_init_options(&cfg, wrcfg->comp_id,
					wrcfg->block_size,
					wrcfg->comp_extra)) {
		return -1;
	}

	sqfs->outfile = sqfs_open_file(wrcfg->filename, wrcfg->outmode);
	if (sqfs->outfile == NULL) {
		perror(wrcfg->filename);
		return -1;
	}

	if (fstree_init(&sqfs->fs, wrcfg->fs_defaults))
		goto fail_file;

	ret = sqfs_compressor_create(&cfg, &sqfs->cmp);

#ifdef WITH_LZO
	if (cfg.id == SQFS_COMP_LZO) {
		if (sqfs->cmp != NULL)
			sqfs_destroy(sqfs->cmp);

		ret = lzo_compressor_create(&cfg, &sqfs->cmp);
	}
#endif

	if (ret != 0) {
		sqfs_perror(wrcfg->filename, "creating compressor", ret);
		goto fail_fs;
	}

	ret = sqfs_super_init(&sqfs->super, wrcfg->block_size,
			      sqfs->fs.defaults.st_mtime, wrcfg->comp_id);
	if (ret) {
		sqfs_perror(wrcfg->filename, "initializing super block", ret);
		goto fail_cmp;
	}

	ret = sqfs_super_write(&sqfs->super, sqfs->outfile);
	if (ret) {
		sqfs_perror(wrcfg->filename, "writing super block", ret);
		goto fail_cmp;
	}

	ret = sqfs->cmp->write_options(sqfs->cmp, sqfs->outfile);
	if (ret < 0) {
		sqfs_perror(wrcfg->filename, "writing compressor options", ret);
		goto fail_cmp;
	}

	if (ret > 0)
		sqfs->super.flags |= SQFS_FLAG_COMPRESSOR_OPTIONS;

	sqfs->blkwr = sqfs_block_writer_create(sqfs->outfile,
					       wrcfg->devblksize, 0);
	if (sqfs->blkwr == NULL) {
		perror("creating block writer");
		goto fail_cmp;
	}

	sqfs->fragtbl = sqfs_frag_table_create(0);
	if (sqfs->fragtbl == NULL) {
		perror("creating fragment table");
		goto fail_blkwr;
	}

	sqfs->data = sqfs_block_processor_create(sqfs->super.block_size,
						 sqfs->cmp, wrcfg->num_jobs,
						 wrcfg->max_backlog,
						 sqfs->blkwr, sqfs->fragtbl);
	if (sqfs->data == NULL) {
		perror("creating data block processor");
		goto fail_fragtbl;
	}

	sqfs->idtbl = sqfs_id_table_create(0);
	if (sqfs->idtbl == NULL) {
		sqfs_perror(wrcfg->filename, "creating ID table",
			    SQFS_ERROR_ALLOC);
		goto fail_data;
	}

	if (!wrcfg->no_xattr) {
		sqfs->xwr = sqfs_xattr_writer_create(0);

		if (sqfs->xwr == NULL) {
			sqfs_perror(wrcfg->filename, "creating xattr writer",
				    SQFS_ERROR_ALLOC);
			goto fail_id;
		}
	}

	sqfs->im = sqfs_meta_writer_create(sqfs->outfile, sqfs->cmp, 0);
	if (sqfs->im == NULL) {
		fputs("Error creating inode meta data writer.\n", stderr);
		goto fail_xwr;
	}

	sqfs->dm = sqfs_meta_writer_create(sqfs->outfile, sqfs->cmp,
					   SQFS_META_WRITER_KEEP_IN_MEMORY);
	if (sqfs->dm == NULL) {
		fputs("Error creating directory meta data writer.\n", stderr);
		goto fail_im;
	}

	flags = 0;
	if (wrcfg->exportable)
		flags |= SQFS_DIR_WRITER_CREATE_EXPORT_TABLE;

	sqfs->dirwr = sqfs_dir_writer_create(sqfs->dm, flags);
	if (sqfs->dirwr == NULL) {
		fputs("Error creating directory table writer.\n", stderr);
		goto fail_dm;
	}

	return 0;
fail_dm:
	sqfs_destroy(sqfs->dm);
fail_im:
	sqfs_destroy(sqfs->im);
fail_xwr:
	if (sqfs->xwr != NULL)
		sqfs_destroy(sqfs->xwr);
fail_id:
	sqfs_destroy(sqfs->idtbl);
fail_data:
	sqfs_destroy(sqfs->data);
fail_fragtbl:
	sqfs_destroy(sqfs->fragtbl);
fail_blkwr:
	sqfs_destroy(sqfs->blkwr);
fail_cmp:
	sqfs_destroy(sqfs->cmp);
fail_fs:
	fstree_cleanup(&sqfs->fs);
fail_file:
	sqfs_destroy(sqfs->outfile);
	return -1;
}