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
|
/*
* getparts.c - functions associated with getting partitions for a disk
*
* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
* All rights reserved.
*
* 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 of the License, 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, see <http://www.gnu.org/licenses/>.
*
* Author(s): Michael Fulbright <msf@redhat.com>
* Jeremy Katz <katzj@redhat.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include "../isys/log.h"
/* see if this is a partition name or not */
static int isPartitionName(char *pname) {
/* if it doesnt start with a alpha its not one */
if (!isalpha(*pname) || strstr(pname, "ram"))
return 0;
/* if it has a '/' in it then treat it specially */
if (strchr(pname, '/') && !strstr(pname, "iseries") &&
!strstr(pname, "i2o")) {
/* assume its either a /dev/ida/ or /dev/cciss device */
/* these have form of c?d?p? if its a partition */
return strchr(pname, 'p') != NULL;
} else {
/* if it ends with a digit we're ok */
return isdigit(pname[strlen(pname)-1]);
}
}
/* return NULL terminated array of pointers to names of partitons in
* /proc/partitions
*/
char **getPartitionsList(char * disk) {
FILE *f;
int numfound = 0;
char **rc=NULL;
f = fopen("/proc/partitions", "r");
if (!f) {
logMessage(ERROR, "getPartitionsList: could not open /proc/partitions");
return NULL;
}
/* read through /proc/partitions and parse out partitions */
while (1) {
char *tmpptr, *pptr;
char tmpstr[4096];
tmpptr = fgets(tmpstr, sizeof(tmpstr), f);
if (tmpptr) {
char *a, *b;
int toknum = 0;
a = tmpstr;
while (1) {
b = strsep(&a, " \n");
/* if no fields left abort */
if (!b)
break;
/* if field was empty means we hit another delimiter */
if (!*b)
continue;
/* make sure this is a valid partition line, should start */
/* with a numeral */
if (toknum == 0) {
if (!isdigit(*b))
break;
} else if (toknum == 2) {
/* if size is exactly 1 then ignore it as an extended */
if (!strcmp(b, "1"))
break;
} else if (toknum == 3) {
/* this should be the partition name */
/* now we need to see if this is the block device or */
/* actually a partition name */
if (!isPartitionName(b))
break;
/* make sure that either we don't care about the disk
* or it's this one */
if ((disk != NULL) && (strncmp(disk, b, strlen(disk))))
break;
/* we found a partition! */
pptr = (char *) malloc(strlen(b) + 7);
sprintf(pptr, "/dev/%s", b);
if (!rc) {
rc = (char **) malloc(2*sizeof(char *));
rc[0] = pptr;
rc[1] = NULL;
} else {
int idx;
rc = (char **) realloc(rc, (numfound+2)*sizeof(char *));
idx = 0;
while (idx < numfound) {
if (strcmp(pptr, rc[idx]) < 0)
break;
idx++;
}
/* move existing out of way if necessary */
if (idx != numfound)
memmove(rc+idx+1, rc+idx, (numfound-idx)*sizeof(char *));
rc[idx] = pptr;
rc[numfound+1] = NULL;
}
numfound++;
break;
}
toknum++;
}
} else {
break;
}
}
fclose(f);
return rc;
}
/* returns length of partitionlist */
int lenPartitionsList(char **list) {
char **part;
int rc;
if (!list) return 0;
for (rc = 0, part = list; *part; rc++, part++);
return rc;
}
/* frees partition list */
void freePartitionsList(char **list) {
char **part;
if (!list)
return;
for (part = list; *part; part++) {
if (*part) {
free(*part);
*part = NULL;
}
}
free(list);
list = NULL;
}
|
GitWeb