getmntinfo.c revision 1.1.2.2
1 1.1.2.2 yamt /* $NetBSD: getmntinfo.c,v 1.1.2.2 2012/04/17 00:09:01 yamt Exp $ */ 2 1.1.2.2 yamt /* 3 1.1.2.2 yamt * Copyright (c) 2007 The NetBSD Foundation, Inc. 4 1.1.2.2 yamt * All rights reserved. 5 1.1.2.2 yamt * 6 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 7 1.1.2.2 yamt * modification, are permitted provided that the following conditions 8 1.1.2.2 yamt * are met: 9 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 10 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 11 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 12 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 13 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 14 1.1.2.2 yamt * 15 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16 1.1.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 1.1.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 1.1.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19 1.1.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 1.1.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 1.1.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 1.1.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 1.1.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 1.1.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 1.1.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 26 1.1.2.2 yamt */ 27 1.1.2.2 yamt 28 1.1.2.2 yamt #include <sys/param.h> 29 1.1.2.2 yamt #include <sys/ucred.h> 30 1.1.2.2 yamt #include <sys/mount.h> 31 1.1.2.2 yamt 32 1.1.2.2 yamt #include <err.h> 33 1.1.2.2 yamt #include <stdlib.h> 34 1.1.2.2 yamt #include <string.h> 35 1.1.2.2 yamt 36 1.1.2.2 yamt #define KB * 1024 37 1.1.2.2 yamt #define MB * 1024 KB 38 1.1.2.2 yamt #define GB * 1024 MB 39 1.1.2.2 yamt 40 1.1.2.2 yamt static struct statvfs *getnewstatvfs(void); 41 1.1.2.2 yamt static void other_variants(const struct statvfs *, const int *, int, 42 1.1.2.2 yamt const int *, int); 43 1.1.2.2 yamt static void setup_filer(void); 44 1.1.2.2 yamt static void setup_ld0g(void); 45 1.1.2.2 yamt static void setup_strpct(void); 46 1.1.2.2 yamt 47 1.1.2.2 yamt static struct statvfs *allstatvfs; 48 1.1.2.2 yamt static int sftotal, sfused; 49 1.1.2.2 yamt 50 1.1.2.2 yamt struct statvfs * 51 1.1.2.2 yamt getnewstatvfs(void) 52 1.1.2.2 yamt { 53 1.1.2.2 yamt 54 1.1.2.2 yamt if (sftotal == sfused) { 55 1.1.2.2 yamt sftotal = sftotal ? sftotal * 2 : 1; 56 1.1.2.2 yamt allstatvfs = realloc(allstatvfs, 57 1.1.2.2 yamt sftotal * sizeof(struct statvfs)); 58 1.1.2.2 yamt if (allstatvfs == NULL) 59 1.1.2.2 yamt err(EXIT_FAILURE, "realloc"); 60 1.1.2.2 yamt } 61 1.1.2.2 yamt 62 1.1.2.2 yamt return (&allstatvfs[sfused++]); 63 1.1.2.2 yamt } 64 1.1.2.2 yamt 65 1.1.2.2 yamt void 66 1.1.2.2 yamt other_variants(const struct statvfs *tmpl, const int *minfree, int minfreecnt, 67 1.1.2.2 yamt const int *consumed, int consumedcnt) 68 1.1.2.2 yamt { 69 1.1.2.2 yamt int64_t total, used; 70 1.1.2.2 yamt struct statvfs *sf; 71 1.1.2.2 yamt int i, j; 72 1.1.2.2 yamt 73 1.1.2.2 yamt for (i = 0; i < minfreecnt; i++) 74 1.1.2.2 yamt for (j = 0; j < consumedcnt; j++) { 75 1.1.2.2 yamt sf = getnewstatvfs(); 76 1.1.2.2 yamt *sf = *tmpl; 77 1.1.2.2 yamt total = (int64_t)(u_long)sf->f_blocks * sf->f_bsize; 78 1.1.2.2 yamt used = total * consumed[j] / 100; 79 1.1.2.2 yamt sf->f_bfree = (total - used) / sf->f_bsize; 80 1.1.2.2 yamt sf->f_bavail = (total * (100 - minfree[i]) / 100 - 81 1.1.2.2 yamt used) / (int)sf->f_bsize; 82 1.1.2.2 yamt sf->f_bresvd = sf->f_bfree - sf->f_bavail; 83 1.1.2.2 yamt } 84 1.1.2.2 yamt } 85 1.1.2.2 yamt 86 1.1.2.2 yamt /* 87 1.1.2.2 yamt * Parameter taken from: 88 1.1.2.2 yamt * http://mail-index.NetBSD.org/tech-userlevel/2004/03/24/0001.html 89 1.1.2.2 yamt */ 90 1.1.2.2 yamt void 91 1.1.2.2 yamt setup_filer(void) 92 1.1.2.2 yamt { 93 1.1.2.2 yamt static const struct statvfs tmpl = { 94 1.1.2.2 yamt #define BSIZE 512 95 1.1.2.2 yamt #define TOTAL 1147ULL GB 96 1.1.2.2 yamt #define USED 132ULL MB 97 1.1.2.2 yamt .f_bsize = BSIZE, 98 1.1.2.2 yamt .f_frsize = BSIZE, 99 1.1.2.2 yamt .f_blocks = TOTAL / BSIZE, 100 1.1.2.2 yamt .f_bfree = (TOTAL - USED) / BSIZE, 101 1.1.2.2 yamt .f_bavail = (TOTAL - USED) / BSIZE, 102 1.1.2.2 yamt .f_bresvd = 0, 103 1.1.2.2 yamt .f_mntfromname = "filer:/", 104 1.1.2.2 yamt .f_mntonname = "/filer", 105 1.1.2.2 yamt #undef USED 106 1.1.2.2 yamt #undef TOTAL 107 1.1.2.2 yamt #undef BSIZE 108 1.1.2.2 yamt }; 109 1.1.2.2 yamt static const int minfree[] = { 0, 5, 10, 15, }; 110 1.1.2.2 yamt static const int consumed[] = { 0, 20, 60, 95, 100 }; 111 1.1.2.2 yamt 112 1.1.2.2 yamt *getnewstatvfs() = tmpl; 113 1.1.2.2 yamt other_variants(&tmpl, minfree, sizeof(minfree) / sizeof(minfree[0]), 114 1.1.2.2 yamt consumed, sizeof(consumed) / sizeof(consumed[0])); 115 1.1.2.2 yamt } 116 1.1.2.2 yamt 117 1.1.2.2 yamt /* 118 1.1.2.2 yamt * Parameter taken from: 119 1.1.2.2 yamt * http://mail-index.NetBSD.org/current-users/2004/03/01/0038.html 120 1.1.2.2 yamt */ 121 1.1.2.2 yamt void 122 1.1.2.2 yamt setup_ld0g(void) 123 1.1.2.2 yamt { 124 1.1.2.2 yamt static const struct statvfs tmpl = { 125 1.1.2.2 yamt #define BSIZE 4096 /* Guess */ 126 1.1.2.2 yamt #define TOTAL 1308726116ULL KB 127 1.1.2.2 yamt #define USED 17901268ULL KB 128 1.1.2.2 yamt #define AVAIL 1225388540ULL KB 129 1.1.2.2 yamt .f_bsize = BSIZE, 130 1.1.2.2 yamt .f_frsize = BSIZE, 131 1.1.2.2 yamt .f_blocks = TOTAL / BSIZE, 132 1.1.2.2 yamt .f_bfree = (TOTAL - USED) / BSIZE, 133 1.1.2.2 yamt .f_bavail = AVAIL / BSIZE, 134 1.1.2.2 yamt .f_bresvd = (TOTAL - USED) / BSIZE - AVAIL / BSIZE, 135 1.1.2.2 yamt .f_mntfromname = "/dev/ld0g", 136 1.1.2.2 yamt .f_mntonname = "/anon-root", 137 1.1.2.2 yamt #undef AVAIL 138 1.1.2.2 yamt #undef USED 139 1.1.2.2 yamt #undef TOTAL 140 1.1.2.2 yamt #undef BSIZE 141 1.1.2.2 yamt }; 142 1.1.2.2 yamt static const int minfree[] = { 0, 5, 10, 15, }; 143 1.1.2.2 yamt static const int consumed[] = { 0, 20, 60, 95, 100 }; 144 1.1.2.2 yamt 145 1.1.2.2 yamt *getnewstatvfs() = tmpl; 146 1.1.2.2 yamt other_variants(&tmpl, minfree, sizeof(minfree) / sizeof(minfree[0]), 147 1.1.2.2 yamt consumed, sizeof(consumed) / sizeof(consumed[0])); 148 1.1.2.2 yamt } 149 1.1.2.2 yamt 150 1.1.2.2 yamt /* 151 1.1.2.2 yamt * Test of strpct() with huge number. 152 1.1.2.2 yamt */ 153 1.1.2.2 yamt void 154 1.1.2.2 yamt setup_strpct(void) 155 1.1.2.2 yamt { 156 1.1.2.2 yamt static const struct statvfs tmpl = { 157 1.1.2.2 yamt #define BSIZE 4096 /* Guess */ 158 1.1.2.2 yamt #define TOTAL 0x4ffffffffULL KB 159 1.1.2.2 yamt #define USED (TOTAL / 2) 160 1.1.2.2 yamt #define AVAIL (TOTAL / 2) 161 1.1.2.2 yamt .f_bsize = BSIZE, 162 1.1.2.2 yamt .f_frsize = BSIZE, 163 1.1.2.2 yamt .f_blocks = TOTAL / BSIZE, 164 1.1.2.2 yamt .f_bfree = (TOTAL - USED) / BSIZE, 165 1.1.2.2 yamt .f_bavail = AVAIL / BSIZE, 166 1.1.2.2 yamt .f_bresvd = (TOTAL - USED) / BSIZE - AVAIL / BSIZE, 167 1.1.2.2 yamt .f_mntfromname = "/dev/strpct", 168 1.1.2.2 yamt .f_mntonname = "/strpct", 169 1.1.2.2 yamt #undef AVAIL 170 1.1.2.2 yamt #undef USED 171 1.1.2.2 yamt #undef TOTAL 172 1.1.2.2 yamt #undef BSIZE 173 1.1.2.2 yamt }; 174 1.1.2.2 yamt 175 1.1.2.2 yamt *getnewstatvfs() = tmpl; 176 1.1.2.2 yamt } 177 1.1.2.2 yamt 178 1.1.2.2 yamt /* 179 1.1.2.2 yamt * Parameter taken from: 180 1.1.2.2 yamt * http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=23600 181 1.1.2.2 yamt */ 182 1.1.2.2 yamt static void 183 1.1.2.2 yamt setup_pr23600(void) 184 1.1.2.2 yamt { 185 1.1.2.2 yamt static const struct statvfs tmpl = { 186 1.1.2.2 yamt #define BSIZE 512 187 1.1.2.2 yamt #define TOTAL 20971376ULL 188 1.1.2.2 yamt #define USED 5719864ULL 189 1.1.2.2 yamt #define AVAIL 15251512ULL 190 1.1.2.2 yamt .f_bsize = BSIZE, 191 1.1.2.2 yamt .f_frsize = BSIZE, 192 1.1.2.2 yamt .f_blocks = TOTAL, 193 1.1.2.2 yamt .f_bfree = TOTAL - USED, 194 1.1.2.2 yamt .f_bavail = AVAIL, 195 1.1.2.2 yamt .f_bresvd = TOTAL - USED - AVAIL, 196 1.1.2.2 yamt .f_mntfromname = "/dev/wd0e", 197 1.1.2.2 yamt .f_mntonname = "/mount/windows/C", 198 1.1.2.2 yamt #undef AVAIL 199 1.1.2.2 yamt #undef USED 200 1.1.2.2 yamt #undef TOTAL 201 1.1.2.2 yamt #undef BSIZE 202 1.1.2.2 yamt }; 203 1.1.2.2 yamt 204 1.1.2.2 yamt *getnewstatvfs() = tmpl; 205 1.1.2.2 yamt } 206 1.1.2.2 yamt 207 1.1.2.2 yamt int 208 1.1.2.2 yamt getmntinfo(struct statvfs **mntbuf, int flags) 209 1.1.2.2 yamt { 210 1.1.2.2 yamt 211 1.1.2.2 yamt setup_filer(); 212 1.1.2.2 yamt setup_ld0g(); 213 1.1.2.2 yamt setup_strpct(); 214 1.1.2.2 yamt setup_pr23600(); 215 1.1.2.2 yamt 216 1.1.2.2 yamt *mntbuf = allstatvfs; 217 1.1.2.2 yamt return (sfused); 218 1.1.2.2 yamt } 219
Indexes created Thu Oct 23 22:10:10 GMT 2025