1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 24 #include <ast.h> 25 #include <ls.h> 26 27 #if _lib_statvfs 28 29 NoN(statvfs) 30 31 #else 32 33 #include <error.h> 34 35 #define HUH (-1) 36 37 #if _lib_statfs && _mem_f_files_statfs && ( _sys_statfs || _sys_vfs || _sys_mount ) 38 39 #if _sys_statfs 40 #include <sys/statfs.h> 41 #else 42 #if _sys_vfs 43 #include <sys/vfs.h> 44 #else 45 #if _sys_mount 46 #if _lib_getmntinfo 47 #include <sys/param.h> /* expect some macro redefinitions here */ 48 #endif 49 #include <sys/mount.h> 50 #endif 51 #endif 52 #endif 53 54 #if _lib_statfs4 55 #define FSTATFS(a,b) fstatfs(a,b,sizeof(struct statfs),0) 56 #define STATFS(a,b) statfs(a,b,sizeof(struct statfs),0) 57 #else 58 #define FSTATFS(a,b) fstatfs(a,b) 59 #define STATFS(a,b) statfs(a,b) 60 #endif 61 62 #if defined(__EXPORT__) 63 #define extern __EXPORT__ 64 #endif 65 66 static void 67 us2v(register struct statfs* ufs, register struct stat* st, register struct statvfs* vfs) 68 { 69 memset(vfs, 0, sizeof(*vfs)); 70 vfs->f_bsize = vfs->f_frsize = ufs->f_bsize; 71 vfs->f_blocks = ufs->f_blocks; 72 vfs->f_bfree = ufs->f_bfree; 73 vfs->f_bavail = 74 #if _mem_f_bavail_statfs 75 ufs->f_bavail; 76 #else 77 ufs->f_bfree; 78 #endif 79 vfs->f_files = ufs->f_files; 80 vfs->f_ffree = ufs->f_ffree; 81 vfs->f_favail = (ufs->f_ffree > 10) ? (ufs->f_ffree - 10) : 0; 82 vfs->f_fsid = st->st_dev; 83 strncpy(vfs->f_basetype, FS_default, sizeof(vfs->f_basetype) - 1); 84 vfs->f_namemax = 14; 85 strncpy(vfs->f_fstr, vfs->f_basetype, sizeof(vfs->f_fstr) - 1); 86 } 87 88 extern int 89 fstatvfs(int fd, struct statvfs* vfs) 90 { 91 struct statfs ufs; 92 struct stat st; 93 94 if (FSTATFS(fd, &ufs) || fstat(fd, &st)) 95 return(-1); 96 us2v(&ufs, &st, vfs); 97 return(0); 98 } 99 100 extern int 101 statvfs(const char* path, struct statvfs* vfs) 102 { 103 struct statfs ufs; 104 struct stat st; 105 106 if (STATFS(path, &ufs) || stat(path, &st)) 107 return(-1); 108 us2v(&ufs, &st, vfs); 109 return(0); 110 } 111 112 #else 113 114 #if defined(__EXPORT__) 115 #define extern __EXPORT__ 116 #endif 117 118 static void 119 s2v(register struct stat* st, register struct statvfs* vfs) 120 { 121 memset(vfs, 0, sizeof(*vfs)); 122 vfs->f_bsize = vfs->f_frsize = 123 #if _mem_st_blksize_stat 124 st->st_blksize; 125 #else 126 512; 127 #endif 128 vfs->f_blocks = HUH; 129 vfs->f_bfree = HUH; 130 vfs->f_files = HUH; 131 vfs->f_ffree = HUH; 132 vfs->f_favail = HUH; 133 vfs->f_fsid = st->st_dev; 134 strncpy(vfs->f_basetype, FS_default, sizeof(vfs->f_basetype) - 1); 135 vfs->f_namemax = 14; 136 strncpy(vfs->f_fstr, vfs->f_basetype, sizeof(vfs->f_fstr) - 1); 137 } 138 139 extern int 140 fstatvfs(int fd, struct statvfs* vfs) 141 { 142 struct stat st; 143 144 if (fstat(fd, &st)) 145 return(-1); 146 s2v(&st, vfs); 147 return(0); 148 } 149 150 extern int 151 statvfs(const char* path, struct statvfs* vfs) 152 { 153 struct stat st; 154 155 if (stat(path, &st)) 156 return(-1); 157 s2v(&st, vfs); 158 return(0); 159 } 160 161 #endif 162 163 #endif 164