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
|
/* mountlist.c -- return a list of mounted filesystems
Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This file is a fork of sysdeps/common/mountlist.c.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/*
Local Variables:
mode: C
c-file-style: "gnu"
End:
*/
#include <config.h>
#include <stdio.h>
#include <mntent.h>
#include <glibtop.h>
#include <glibtop/mountlist.h>
#include <glibtop/error.h>
/* IgnoreList */
typedef struct
{
GHashTable *table_fstype;
GHashTable *table_mntdir;
} IgnoreList;
static IgnoreList*
ignore_list_new(void)
{
IgnoreList* ig;
ig = g_new(IgnoreList, 1);
ig->table_fstype = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL);
ig->table_mntdir = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL);
return ig;
}
static void
ignore_list_delete(IgnoreList* ig)
{
if (ig) {
g_hash_table_destroy(ig->table_fstype);
g_hash_table_destroy(ig->table_mntdir);
g_free(ig);
}
}
static void
ignore_list_add_fstype(IgnoreList* ig, const char* fstype)
{
g_hash_table_insert(ig->table_fstype, g_strdup(fstype), GINT_TO_POINTER(1));
}
static void
ignore_list_add_mntdir(IgnoreList* ig, const char* mntdir)
{
g_hash_table_insert(ig->table_mntdir, g_strdup(mntdir), GINT_TO_POINTER(1));
}
static gboolean
ignore_list_has_fstype(IgnoreList* ig, const char* fstype)
{
gpointer data;
data = g_hash_table_lookup(ig->table_fstype, fstype);
return data != NULL;
}
static gboolean
ignore_list_has_mntdir(IgnoreList* ig, const char* mntdir)
{
gpointer data;
data = g_hash_table_lookup(ig->table_mntdir, mntdir);
return data != NULL;
}
/* ~IgnoreList */
static gboolean
ignore_fs(const char *mntdir, const char *fstype, IgnoreList** ig)
{
if (!*ig) {
FILE* fs;
char line[128];
*ig = ignore_list_new();
ignore_list_add_fstype(*ig, "none");
if ((fs = fopen("/proc/filesystems", "r")) != NULL) {
while (fgets(line, sizeof line, fs)) {
if (!strncmp(line, "nodev", 5) && strncmp(line+strlen(line)-4, "zfs", 3)) {
char *type;
type = g_strstrip(line + 5);
ignore_list_add_fstype(*ig, type);
}
}
fclose(fs);
}
if ((fs = fopen("/run/mount/utab", "r")) != NULL) {
size_t len = 0;
char *uline = NULL;
while (getline(&uline, &len, fs) != -1) {
if (strstr(uline, "x-gdu.hide")) {
char * pch = strtok (uline, " ");
while (pch != NULL) {
if (!strncmp(pch, "TARGET=", 7)) {
ignore_list_add_mntdir(*ig, pch+7);
}
pch = strtok (NULL, " ");
}
}
}
free(uline);
fclose(fs);
}
}
return ignore_list_has_fstype(*ig, fstype) || ignore_list_has_mntdir(*ig, mntdir);
}
glibtop_mountentry *
glibtop_get_mountlist_s(glibtop *server, glibtop_mountlist *buf, int all_fs)
{
const struct mntent *mnt;
FILE *fp;
GArray* entries;
IgnoreList* ig = NULL;
memset(buf, 0, sizeof(glibtop_mountlist));
/* wild guess, preallocate 8 entries
on a desktop, almost everyone has / and a tmpfs for udev
if all_fs, there are also proc, sys, fuse, binfmt, etc */
entries = g_array_sized_new(FALSE, FALSE, sizeof(glibtop_mountentry), 8);
if (!(fp = setmntent(MOUNTED, "r"))) {
glibtop_warn_io_r(server, "Could not open %s", MOUNTED);
goto out;
}
while ((mnt = getmntent(fp)))
{
glibtop_mountentry *me;
const char *devopt;
gsize len;
if (!all_fs && ignore_fs(mnt->mnt_dir, mnt->mnt_type, &ig))
continue;
len = entries->len;
g_array_set_size(entries, len + 1);
me = &g_array_index(entries, glibtop_mountentry, len);
g_strlcpy(me->devname, mnt->mnt_fsname, sizeof me->devname);
g_strlcpy(me->mountdir, mnt->mnt_dir, sizeof me->mountdir);
g_strlcpy(me->type, mnt->mnt_type, sizeof me->type);
devopt = strstr(mnt->mnt_opts, "dev=");
me->dev = (devopt ? strtoull(devopt + sizeof "dev=", NULL, 0) : (dev_t)-1);
}
endmntent(fp);
out:
ignore_list_delete(ig);
buf->size = sizeof(glibtop_mountentry);
buf->number = entries->len;
buf->total = buf->number * buf->size;
buf->flags = (1 << GLIBTOP_MOUNTLIST_SIZE)
| (1 << GLIBTOP_MOUNTLIST_NUMBER)
| (1 << GLIBTOP_MOUNTLIST_TOTAL);
return (glibtop_mountentry*) g_array_free(entries, FALSE);
}
|
