1 /*- 2 * Copyright (c) 1994-1995 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software withough specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $Id: linux_stats.c,v 1.2 1995/08/28 09:18:38 julian Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/dirent.h> 34 #include <sys/file.h> 35 #include <sys/filedesc.h> 36 #include <sys/proc.h> 37 #include <sys/mount.h> 38 #include <sys/namei.h> 39 #include <sys/socketvar.h> 40 #include <sys/stat.h> 41 #include <sys/vnode.h> 42 43 #include <i386/linux/linux.h> 44 #include <i386/linux/sysproto.h> 45 46 struct linux_newstat { 47 unsigned short stat_dev; 48 unsigned short __pad1; 49 unsigned long stat_ino; 50 unsigned short stat_mode; 51 unsigned short stat_nlink; 52 unsigned short stat_uid; 53 unsigned short stat_gid; 54 unsigned short stat_rdev; 55 unsigned short __pad2; 56 unsigned long stat_size; 57 unsigned long stat_blksize; 58 unsigned long stat_blocks; 59 unsigned long stat_atime; 60 unsigned long __unused1; 61 unsigned long stat_mtime; 62 unsigned long __unused2; 63 unsigned long stat_ctime; 64 unsigned long __unused3; 65 unsigned long __unused4; 66 unsigned long __unused5; 67 }; 68 69 struct linux_newstat_args { 70 char *path; 71 struct linux_newstat *buf; 72 }; 73 74 static int 75 newstat_copyout(struct stat *buf, void *ubuf) 76 { 77 struct linux_newstat tbuf; 78 79 tbuf.stat_dev = (buf->st_dev & 0xff) | ((buf->st_dev & 0xff00)<<10); 80 tbuf.stat_ino = buf->st_ino; 81 tbuf.stat_mode = buf->st_mode; 82 tbuf.stat_nlink = buf->st_nlink; 83 tbuf.stat_uid = buf->st_uid; 84 tbuf.stat_gid = buf->st_gid; 85 tbuf.stat_rdev = buf->st_rdev; 86 tbuf.stat_size = buf->st_size; 87 tbuf.stat_atime = buf->st_atime; 88 tbuf.stat_mtime = buf->st_mtime; 89 tbuf.stat_ctime = buf->st_ctime; 90 tbuf.stat_blksize = buf->st_blksize; 91 tbuf.stat_blocks = buf->st_blocks; 92 return copyout(&tbuf, ubuf, sizeof(tbuf)); 93 } 94 95 int 96 linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval) 97 { 98 struct stat buf; 99 struct linux_newstat tbuf; 100 struct nameidata nd; 101 int error; 102 103 #ifdef DEBUG 104 printf("Linux-emul(%d): newstat(%s, *)\n", p->p_pid, args->path); 105 #endif 106 NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p); 107 error = namei(&nd); 108 if (!error) { 109 error = vn_stat(nd.ni_vp, &buf, p); 110 vput(nd.ni_vp); 111 } 112 if (!error) 113 error = newstat_copyout(&buf, args->buf); 114 return error; 115 } 116 117 int 118 linux_newlstat(struct proc *p, struct linux_newstat_args *args, int *retval) 119 { 120 struct stat buf; 121 struct linux_newstat tbuf; 122 struct nameidata nd; 123 int error; 124 125 #ifdef DEBUG 126 printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, args->path); 127 #endif 128 NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p); 129 error = namei(&nd); 130 if (!error) { 131 error = vn_stat(nd.ni_vp, &buf, p); 132 vput(nd.ni_vp); 133 } 134 if (!error) 135 error = newstat_copyout(&buf, args->buf); 136 return error; 137 } 138 139 struct linux_newfstat_args { 140 int fd; 141 struct linux_newstat *buf; 142 }; 143 144 int 145 linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval) 146 { 147 struct linux_newstat tbuf; 148 struct filedesc *fdp = p->p_fd; 149 struct file *fp; 150 struct stat buf; 151 int error; 152 153 #ifdef DEBUG 154 printf("Linux-emul(%d): newlstat(%d, *)\n", p->p_pid, args->fd); 155 #endif 156 if ((unsigned)args->fd >= fdp->fd_nfiles 157 || (fp = fdp->fd_ofiles[args->fd]) == NULL) 158 return EBADF; 159 switch (fp->f_type) { 160 case DTYPE_VNODE: 161 error = vn_stat((struct vnode *)fp->f_data, &buf, p); 162 break; 163 case DTYPE_SOCKET: 164 error = soo_stat((struct socket *)fp->f_data, &buf); 165 break; 166 default: 167 panic("LINUX newfstat"); 168 } 169 if (!error) 170 error = newstat_copyout(&buf, args->buf); 171 return error; 172 } 173 174 struct linux_statfs { 175 long ftype; 176 long fbsize; 177 long fblocks; 178 long fbfree; 179 long fbavail; 180 long ffiles; 181 long fffree; 182 linux_fsid_t ffsid; 183 long fnamelen; 184 long fspare[6]; 185 }; 186 187 188 struct linux_statfs_args { 189 char *path; 190 struct statfs *buf; 191 }; 192 193 int 194 linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval) 195 { 196 struct mount *mp; 197 struct nameidata *ndp; 198 struct statfs *bsd_statfs; 199 struct nameidata nd; 200 struct linux_statfs linux_statfs; 201 int error; 202 203 #ifdef DEBUG 204 printf("Linux-emul(%d): statfs(%s, *)\n", p->p_pid, args->path); 205 #endif 206 ndp = &nd; 207 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc); 208 if (error = namei(ndp)) 209 return error; 210 mp = ndp->ni_vp->v_mount; 211 bsd_statfs = &mp->mnt_stat; 212 vrele(ndp->ni_vp); 213 if (error = VFS_STATFS(mp, bsd_statfs, p)) 214 return error; 215 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 216 linux_statfs.ftype = bsd_statfs->f_type; 217 linux_statfs.fbsize = bsd_statfs->f_bsize; 218 linux_statfs.fblocks = bsd_statfs->f_blocks; 219 linux_statfs.fbfree = bsd_statfs->f_bfree; 220 linux_statfs.fbavail = bsd_statfs->f_bavail; 221 linux_statfs.fffree = bsd_statfs->f_ffree; 222 linux_statfs.ffiles = bsd_statfs->f_files; 223 linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; 224 linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; 225 linux_statfs.fnamelen = MAXNAMLEN; 226 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, 227 sizeof(struct linux_statfs)); 228 } 229 230 struct linux_fstatfs_args { 231 int fd; 232 struct statfs *buf; 233 }; 234 235 int 236 linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval) 237 { 238 struct file *fp; 239 struct mount *mp; 240 struct statfs *bsd_statfs; 241 struct linux_statfs linux_statfs; 242 int error; 243 244 #ifdef DEBUG 245 printf("Linux-emul(%d): fstatfs(%d, *)\n", p->p_pid, args->fd); 246 #endif 247 if (error = getvnode(p->p_fd, args->fd, &fp)) 248 return error; 249 mp = ((struct vnode *)fp->f_data)->v_mount; 250 bsd_statfs = &mp->mnt_stat; 251 if (error = VFS_STATFS(mp, bsd_statfs, p)) 252 return error; 253 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 254 linux_statfs.ftype = bsd_statfs->f_type; 255 linux_statfs.fbsize = bsd_statfs->f_bsize; 256 linux_statfs.fblocks = bsd_statfs->f_blocks; 257 linux_statfs.fbfree = bsd_statfs->f_bfree; 258 linux_statfs.fbavail = bsd_statfs->f_bavail; 259 linux_statfs.fffree = bsd_statfs->f_ffree; 260 linux_statfs.ffiles = bsd_statfs->f_files; 261 linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; 262 linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; 263 linux_statfs.fnamelen = MAXNAMLEN; 264 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, 265 sizeof(struct linux_statfs)); 266 } 267