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 1.3 1995/11/22 07:43:51 bde 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 #include <sys/pipe.h> 43 44 #include <i386/linux/linux.h> 45 #include <i386/linux/sysproto.h> 46 47 struct linux_newstat { 48 unsigned short stat_dev; 49 unsigned short __pad1; 50 unsigned long stat_ino; 51 unsigned short stat_mode; 52 unsigned short stat_nlink; 53 unsigned short stat_uid; 54 unsigned short stat_gid; 55 unsigned short stat_rdev; 56 unsigned short __pad2; 57 unsigned long stat_size; 58 unsigned long stat_blksize; 59 unsigned long stat_blocks; 60 unsigned long stat_atime; 61 unsigned long __unused1; 62 unsigned long stat_mtime; 63 unsigned long __unused2; 64 unsigned long stat_ctime; 65 unsigned long __unused3; 66 unsigned long __unused4; 67 unsigned long __unused5; 68 }; 69 70 struct linux_newstat_args { 71 char *path; 72 struct linux_newstat *buf; 73 }; 74 75 static int 76 newstat_copyout(struct stat *buf, void *ubuf) 77 { 78 struct linux_newstat tbuf; 79 80 tbuf.stat_dev = (buf->st_dev & 0xff) | ((buf->st_dev & 0xff00)<<10); 81 tbuf.stat_ino = buf->st_ino; 82 tbuf.stat_mode = buf->st_mode; 83 tbuf.stat_nlink = buf->st_nlink; 84 tbuf.stat_uid = buf->st_uid; 85 tbuf.stat_gid = buf->st_gid; 86 tbuf.stat_rdev = buf->st_rdev; 87 tbuf.stat_size = buf->st_size; 88 tbuf.stat_atime = buf->st_atime; 89 tbuf.stat_mtime = buf->st_mtime; 90 tbuf.stat_ctime = buf->st_ctime; 91 tbuf.stat_blksize = buf->st_blksize; 92 tbuf.stat_blocks = buf->st_blocks; 93 return copyout(&tbuf, ubuf, sizeof(tbuf)); 94 } 95 96 int 97 linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval) 98 { 99 struct stat buf; 100 struct linux_newstat tbuf; 101 struct nameidata nd; 102 int error; 103 104 #ifdef DEBUG 105 printf("Linux-emul(%d): newstat(%s, *)\n", p->p_pid, args->path); 106 #endif 107 NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p); 108 error = namei(&nd); 109 if (!error) { 110 error = vn_stat(nd.ni_vp, &buf, p); 111 vput(nd.ni_vp); 112 } 113 if (!error) 114 error = newstat_copyout(&buf, args->buf); 115 return error; 116 } 117 118 int 119 linux_newlstat(struct proc *p, struct linux_newstat_args *args, int *retval) 120 { 121 struct stat buf; 122 struct linux_newstat tbuf; 123 struct nameidata nd; 124 int error; 125 126 #ifdef DEBUG 127 printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, args->path); 128 #endif 129 NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p); 130 error = namei(&nd); 131 if (!error) { 132 error = vn_stat(nd.ni_vp, &buf, p); 133 vput(nd.ni_vp); 134 } 135 if (!error) 136 error = newstat_copyout(&buf, args->buf); 137 return error; 138 } 139 140 struct linux_newfstat_args { 141 int fd; 142 struct linux_newstat *buf; 143 }; 144 145 int 146 linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval) 147 { 148 struct linux_newstat tbuf; 149 struct filedesc *fdp = p->p_fd; 150 struct file *fp; 151 struct stat buf; 152 int error; 153 154 #ifdef DEBUG 155 printf("Linux-emul(%d): newlstat(%d, *)\n", p->p_pid, args->fd); 156 #endif 157 if ((unsigned)args->fd >= fdp->fd_nfiles 158 || (fp = fdp->fd_ofiles[args->fd]) == NULL) 159 return EBADF; 160 switch (fp->f_type) { 161 case DTYPE_VNODE: 162 error = vn_stat((struct vnode *)fp->f_data, &buf, p); 163 break; 164 case DTYPE_SOCKET: 165 error = soo_stat((struct socket *)fp->f_data, &buf); 166 break; 167 case DTYPE_PIPE: 168 error = pipe_stat((struct pipe *)fp->f_data, &buf); 169 break; 170 default: 171 panic("LINUX newfstat"); 172 } 173 if (!error) 174 error = newstat_copyout(&buf, args->buf); 175 return error; 176 } 177 178 struct linux_statfs { 179 long ftype; 180 long fbsize; 181 long fblocks; 182 long fbfree; 183 long fbavail; 184 long ffiles; 185 long fffree; 186 linux_fsid_t ffsid; 187 long fnamelen; 188 long fspare[6]; 189 }; 190 191 192 struct linux_statfs_args { 193 char *path; 194 struct statfs *buf; 195 }; 196 197 int 198 linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval) 199 { 200 struct mount *mp; 201 struct nameidata *ndp; 202 struct statfs *bsd_statfs; 203 struct nameidata nd; 204 struct linux_statfs linux_statfs; 205 int error; 206 207 #ifdef DEBUG 208 printf("Linux-emul(%d): statfs(%s, *)\n", p->p_pid, args->path); 209 #endif 210 ndp = &nd; 211 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc); 212 if (error = namei(ndp)) 213 return error; 214 mp = ndp->ni_vp->v_mount; 215 bsd_statfs = &mp->mnt_stat; 216 vrele(ndp->ni_vp); 217 if (error = VFS_STATFS(mp, bsd_statfs, p)) 218 return error; 219 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 220 linux_statfs.ftype = bsd_statfs->f_type; 221 linux_statfs.fbsize = bsd_statfs->f_bsize; 222 linux_statfs.fblocks = bsd_statfs->f_blocks; 223 linux_statfs.fbfree = bsd_statfs->f_bfree; 224 linux_statfs.fbavail = bsd_statfs->f_bavail; 225 linux_statfs.fffree = bsd_statfs->f_ffree; 226 linux_statfs.ffiles = bsd_statfs->f_files; 227 linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; 228 linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; 229 linux_statfs.fnamelen = MAXNAMLEN; 230 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, 231 sizeof(struct linux_statfs)); 232 } 233 234 struct linux_fstatfs_args { 235 int fd; 236 struct statfs *buf; 237 }; 238 239 int 240 linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval) 241 { 242 struct file *fp; 243 struct mount *mp; 244 struct statfs *bsd_statfs; 245 struct linux_statfs linux_statfs; 246 int error; 247 248 #ifdef DEBUG 249 printf("Linux-emul(%d): fstatfs(%d, *)\n", p->p_pid, args->fd); 250 #endif 251 if (error = getvnode(p->p_fd, args->fd, &fp)) 252 return error; 253 mp = ((struct vnode *)fp->f_data)->v_mount; 254 bsd_statfs = &mp->mnt_stat; 255 if (error = VFS_STATFS(mp, bsd_statfs, p)) 256 return error; 257 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 258 linux_statfs.ftype = bsd_statfs->f_type; 259 linux_statfs.fbsize = bsd_statfs->f_bsize; 260 linux_statfs.fblocks = bsd_statfs->f_blocks; 261 linux_statfs.fbfree = bsd_statfs->f_bfree; 262 linux_statfs.fbavail = bsd_statfs->f_bavail; 263 linux_statfs.fffree = bsd_statfs->f_ffree; 264 linux_statfs.ffiles = bsd_statfs->f_files; 265 linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; 266 linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; 267 linux_statfs.fnamelen = MAXNAMLEN; 268 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, 269 sizeof(struct linux_statfs)); 270 } 271