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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "analyze.h"
#include "analyze-filesystems.h"
#include "fileio.h"
#include "filesystems.h"
#include "set.h"
#include "strv.h"
#include "terminal-util.h"
static int load_available_kernel_filesystems(Set **ret) {
_cleanup_set_free_ Set *filesystems = NULL;
_cleanup_free_ char *t = NULL;
int r;
assert(ret);
/* Let's read the available filesystems */
r = read_virtual_file("/proc/filesystems", SIZE_MAX, &t, NULL);
if (r < 0)
return r;
for (int i = 0;;) {
_cleanup_free_ char *line = NULL;
const char *p;
r = string_extract_line(t, i++, &line);
if (r < 0)
return log_oom();
if (r == 0)
break;
if (!line)
line = t;
p = strchr(line, '\t');
if (!p)
continue;
p += strspn(p, WHITESPACE);
r = set_put_strdup(&filesystems, p);
if (r < 0)
return log_error_errno(r, "Failed to add filesystem to list: %m");
}
*ret = TAKE_PTR(filesystems);
return 0;
}
static void filesystem_set_remove(Set *s, const FilesystemSet *set) {
const char *filesystem;
NULSTR_FOREACH(filesystem, set->value) {
if (filesystem[0] == '@')
continue;
free(set_remove(s, filesystem));
}
}
static void dump_filesystem_set(const FilesystemSet *set) {
const char *filesystem;
int r;
if (!set)
return;
printf("%s%s%s\n"
" # %s\n",
ansi_highlight(),
set->name,
ansi_normal(),
set->help);
NULSTR_FOREACH(filesystem, set->value) {
const statfs_f_type_t *magic;
if (filesystem[0] == '@') {
printf(" %s%s%s\n", ansi_underline(), filesystem, ansi_normal());
continue;
}
r = fs_type_from_string(filesystem, &magic);
assert_se(r >= 0);
printf(" %s", filesystem);
for (size_t i = 0; magic[i] != 0; i++) {
const char *primary;
if (i == 0)
printf(" %s(magic: ", ansi_grey());
else
printf(", ");
printf("0x%llx", (unsigned long long) magic[i]);
primary = fs_type_to_string(magic[i]);
if (primary && !streq(primary, filesystem))
printf("[%s]", primary);
if (magic[i+1] == 0)
printf(")%s", ansi_normal());
}
printf("\n");
}
}
int dump_filesystems(int argc, char *argv[], void *userdata) {
bool first = true;
#if ! HAVE_LIBBPF
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "Not compiled with libbpf support, sorry.");
#endif
pager_open(arg_pager_flags);
if (strv_isempty(strv_skip(argv, 1))) {
_cleanup_set_free_ Set *kernel = NULL, *known = NULL;
const char *fs;
int k;
NULSTR_FOREACH(fs, filesystem_sets[FILESYSTEM_SET_KNOWN].value)
if (set_put_strdup(&known, fs) < 0)
return log_oom();
k = load_available_kernel_filesystems(&kernel);
for (FilesystemGroups i = 0; i < _FILESYSTEM_SET_MAX; i++) {
const FilesystemSet *set = filesystem_sets + i;
if (!first)
puts("");
dump_filesystem_set(set);
filesystem_set_remove(kernel, set);
if (i != FILESYSTEM_SET_KNOWN)
filesystem_set_remove(known, set);
first = false;
}
if (arg_quiet) /* Let's not show the extra stuff in quiet mode */
return 0;
if (!set_isempty(known)) {
_cleanup_free_ char **l = NULL;
char **filesystem;
printf("\n"
"# %sUngrouped filesystems%s (known but not included in any of the groups except @known):\n",
ansi_highlight(), ansi_normal());
l = set_get_strv(known);
if (!l)
return log_oom();
strv_sort(l);
STRV_FOREACH(filesystem, l) {
const statfs_f_type_t *magic;
bool is_primary = false;
assert_se(fs_type_from_string(*filesystem, &magic) >= 0);
for (size_t i = 0; magic[i] != 0; i++) {
const char *primary;
primary = fs_type_to_string(magic[i]);
assert(primary);
if (streq(primary, *filesystem))
is_primary = true;
}
if (!is_primary) {
log_debug("Skipping ungrouped file system '%s', because it's an alias for another one.", *filesystem);
continue;
}
printf("# %s\n", *filesystem);
}
}
if (k < 0) {
fputc('\n', stdout);
fflush(stdout);
log_notice_errno(k, "# Not showing unlisted filesystems, couldn't retrieve kernel filesystem list: %m");
} else if (!set_isempty(kernel)) {
_cleanup_free_ char **l = NULL;
char **filesystem;
printf("\n"
"# %sUnlisted filesystems%s (available to the local kernel, but not included in any of the groups listed above):\n",
ansi_highlight(), ansi_normal());
l = set_get_strv(kernel);
if (!l)
return log_oom();
strv_sort(l);
STRV_FOREACH(filesystem, l)
printf("# %s\n", *filesystem);
}
} else {
char **name;
STRV_FOREACH(name, strv_skip(argv, 1)) {
const FilesystemSet *set;
if (!first)
puts("");
set = filesystem_set_find(*name);
if (!set) {
/* make sure the error appears below normal output */
fflush(stdout);
return log_error_errno(SYNTHETIC_ERRNO(ENOENT),
"Filesystem set \"%s\" not found.", *name);
}
dump_filesystem_set(set);
first = false;
}
}
return 0;
}
|
