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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include "format-util.h"
#include "install-printf.h"
#include "install.h"
#include "macro.h"
#include "specifier.h"
#include "string-util.h"
#include "unit-name.h"
#include "user-util.h"
static int specifier_prefix_and_instance(char specifier, const void *data, const char *root, const void *userdata, char **ret) {
const InstallInfo *i = ASSERT_PTR(userdata);
_cleanup_free_ char *prefix = NULL;
int r;
r = unit_name_to_prefix_and_instance(i->name, &prefix);
if (r < 0)
return r;
if (endswith(prefix, "@") && i->default_instance) {
char *ans;
ans = strjoin(prefix, i->default_instance);
if (!ans)
return -ENOMEM;
*ret = ans;
} else
*ret = TAKE_PTR(prefix);
return 0;
}
static int specifier_name(char specifier, const void *data, const char *root, const void *userdata, char **ret) {
const InstallInfo *i = ASSERT_PTR(userdata);
char *ans;
if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE) && i->default_instance)
return unit_name_replace_instance(i->name, i->default_instance, ret);
ans = strdup(i->name);
if (!ans)
return -ENOMEM;
*ret = ans;
return 0;
}
static int specifier_prefix(char specifier, const void *data, const char *root, const void *userdata, char **ret) {
const InstallInfo *i = ASSERT_PTR(userdata);
return unit_name_to_prefix(i->name, ret);
}
static int specifier_instance(char specifier, const void *data, const char *root, const void *userdata, char **ret) {
const InstallInfo *i = ASSERT_PTR(userdata);
char *instance;
int r;
r = unit_name_to_instance(i->name, &instance);
if (r < 0)
return r;
if (isempty(instance)) {
r = free_and_strdup(&instance, strempty(i->default_instance));
if (r < 0)
return r;
}
*ret = instance;
return 0;
}
static int specifier_last_component(char specifier, const void *data, const char *root, const void *userdata, char **ret) {
_cleanup_free_ char *prefix = NULL;
char *dash;
int r;
assert(ret);
r = specifier_prefix(specifier, data, root, userdata, &prefix);
if (r < 0)
return r;
dash = strrchr(prefix, '-');
if (dash) {
dash = strdup(dash + 1);
if (!dash)
return -ENOMEM;
*ret = dash;
} else
*ret = TAKE_PTR(prefix);
return 0;
}
int install_name_printf(
LookupScope scope,
const InstallInfo *info,
const char *format,
char **ret) {
/* This is similar to unit_name_printf() */
const Specifier table[] = {
{ 'i', specifier_instance, NULL },
{ 'j', specifier_last_component, NULL },
{ 'n', specifier_name, NULL },
{ 'N', specifier_prefix_and_instance, NULL },
{ 'p', specifier_prefix, NULL },
COMMON_SYSTEM_SPECIFIERS,
COMMON_CREDS_SPECIFIERS(scope),
{}
};
assert(info);
assert(format);
assert(ret);
return specifier_printf(format, UNIT_NAME_MAX, table, info->root, info, ret);
}
|
