summaryrefslogtreecommitdiffstats
path: root/discover/kboot-parser.c
blob: 29324cb224f3ac7ad454131b55803b4f75e796b1 (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
#define _GNU_SOURCE

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

#include "log/log.h"
#include "talloc/talloc.h"
#include "pb-protocol/pb-protocol.h"
#include "parser-conf.h"
#include "parser-utils.h"
#include "paths.h"

static void kboot_process_pair(struct conf_context *conf, const char *name,
		char *value)
{
	const char *const *ignored_names = conf->parser_info;
	char *pos;
	char *args;
	const char *initrd;
	const char *root;
	struct boot_option *opt;

	/* ignore bare values */

	if (!name)
		return;

	if (conf_param_in_list(ignored_names, name))
		return;

	if (conf_set_global_option(conf, name, value))
		return;

	/* opt must be associated with dc */

	opt = talloc_zero(conf->dc->device, struct boot_option);

	if (!opt)
		return;

	opt->id = talloc_asprintf(opt, "%s#%s", conf->dc->device->id, name);
	opt->name = talloc_strdup(opt, name);

	args = talloc_strdup(opt, "");
	initrd = conf_get_global_option(conf, "initrd");
	root = conf_get_global_option(conf, "root");

	pos = strchr(value, ' ');

	/* if there's no space, it's only a kernel image with no params */

	if (!pos)
		goto out_add;
	*pos = 0;

	for (pos++; pos;) {
		char *cl_name, *cl_value;

		pos = conf_get_pair_equal(conf, pos, &cl_name, &cl_value, ' ');

		if (!cl_name) {
			args = talloc_asprintf_append(args, "%s ", cl_value);
			continue;
		}

		if (streq(cl_name, "initrd")) {
			initrd = cl_value;
			continue;
		}

		if (streq(cl_name, "root")) {
			root = cl_value;
			continue;
		}

		args = talloc_asprintf_append(args, "%s=%s ", cl_name,
			cl_value);
	}

out_add:
	opt->boot_image_file = resolve_path(opt, value, conf->dc->device_path);

	if (root) {
		opt->boot_args = talloc_asprintf(opt, "root=%s %s", root, args);
		talloc_free(args);
	} else
		opt->boot_args = args;

	if (initrd) {
		opt->initrd_file = resolve_path(opt, initrd,
				conf->dc->device_path);

		opt->description = talloc_asprintf(opt, "%s initrd=%s %s",
			value, initrd, opt->boot_args);
	} else
		opt->description = talloc_asprintf(opt, "%s %s", value,
			opt->boot_args);

	conf_strip_str(opt->boot_args);
	conf_strip_str(opt->description);

	device_add_boot_option(conf->dc->device, opt);
}

static struct conf_global_option kboot_global_options[] = {
	{ .name = "initrd" },
	{ .name = "root" },
	{ .name = "video" },
	{ .name = NULL }
};

static const char *const kboot_conf_files[] = {
	"/kboot.conf",
	"/kboot.cnf",
	"/etc/kboot.conf",
	"/etc/kboot.cnf",
	"/KBOOT.CONF",
	"/KBOOT.CNF",
	"/ETC/KBOOT.CONF",
	"/ETC/KBOOT.CNF",
	NULL
};

static const char *const kboot_ignored_names[] = {
	"default",
	"delay",
	"message",
	"timeout",
	NULL
};

static int kboot_parse(struct discover_context *dc)
{
	struct conf_context *conf;
	int rc;

	conf = talloc_zero(dc, struct conf_context);

	if (!conf)
		return 0;

	conf->dc = dc;
	conf->global_options = kboot_global_options,
	conf_init_global_options(conf);
	conf->conf_files = kboot_conf_files,
	conf->get_pair = conf_get_pair_equal;
	conf->process_pair = kboot_process_pair;
	conf->parser_info = (void *)kboot_ignored_names,

	rc = conf_parse(conf);

	talloc_free(conf);
	return rc;
}

define_parser(kboot, kboot_parse);
OpenPOWER on IntegriCloud