Correct PPTP server firewall rules chain.
[tomato/davidwu.git] / release / src / router / mdadm / Query.c
blob4cfcf5789b9b9e2901f1b009036d83dac182d68b
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2002-2006 Neil Brown <neilb@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 * Author: Neil Brown
22 * Email: <neilb@cse.unsw.edu.au>
23 * Paper: Neil Brown
24 * School of Computer Science and Engineering
25 * The University of New South Wales
26 * Sydney, 2052
27 * Australia
30 #include "mdadm.h"
31 #include "md_p.h"
32 #include "md_u.h"
34 int Query(char *dev)
36 /* Give a brief description of the device,
37 * whether it is an md device and whether it has
38 * a superblock
40 int fd = open(dev, O_RDONLY, 0);
41 int vers;
42 int ioctlerr;
43 int superror, superrno;
44 struct mdinfo info;
45 mdu_array_info_t array;
46 void *super;
47 struct supertype *st = NULL;
49 unsigned long long larray_size;
50 struct stat stb;
51 char *mddev;
52 mdu_disk_info_t disc;
53 char *activity;
55 if (fd < 0){
56 fprintf(stderr, Name ": cannot open %s: %s\n",
57 dev, strerror(errno));
58 return 1;
61 vers = md_get_version(fd);
62 if (ioctl(fd, GET_ARRAY_INFO, &array)<0)
63 ioctlerr = errno;
64 else ioctlerr = 0;
66 fstat(fd, &stb);
68 if (vers>=9000 && !ioctlerr) {
69 if (!get_dev_size(fd, NULL, &larray_size))
70 larray_size = 0;
73 if (vers < 0)
74 printf("%s: is not an md array\n", dev);
75 else if (vers < 9000)
76 printf("%s: is an md device, but kernel cannot provide details\n", dev);
77 else if (ioctlerr == ENODEV)
78 printf("%s: is an md device which is not active\n", dev);
79 else if (ioctlerr)
80 printf("%s: is an md device, but gives \"%s\" when queried\n",
81 dev, strerror(ioctlerr));
82 else {
83 printf("%s: %s %s %d devices, %d spare%s. Use mdadm --detail for more detail.\n",
84 dev,
85 human_size_brief(larray_size),
86 map_num(pers, array.level),
87 array.raid_disks,
88 array.spare_disks, array.spare_disks==1?"":"s");
90 st = guess_super(fd);
91 if (st) {
92 superror = st->ss->load_super(st, fd, &super, dev);
93 superrno = errno;
94 } else
95 superror = -1;
96 close(fd);
97 if (superror == 0) {
98 /* array might be active... */
99 st->ss->getinfo_super(&info, super);
100 if (st->ss->major == 0) {
101 mddev = get_md_name(info.array.md_minor);
102 disc.number = info.disk.number;
103 activity = "undetected";
104 if (mddev && (fd = open(mddev, O_RDONLY))>=0) {
105 if (md_get_version(fd) >= 9000 &&
106 ioctl(fd, GET_ARRAY_INFO, &array)>= 0) {
107 if (ioctl(fd, GET_DISK_INFO, &disc) >= 0 &&
108 makedev((unsigned)disc.major,(unsigned)disc.minor) == stb.st_rdev)
109 activity = "active";
110 else
111 activity = "mismatch";
113 close(fd);
115 } else {
116 activity = "unknown";
117 mddev = "array";
119 printf("%s: device %d in %d device %s %s %s. Use mdadm --examine for more detail.\n",
120 dev,
121 info.disk.number, info.array.raid_disks,
122 activity,
123 map_num(pers, info.array.level),
124 mddev);
125 if (st->ss->major == 0)
126 put_md_name(mddev);
128 return 0;