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 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/conf.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/stat.h> 40 #include <sys/systm.h> 41 #include <sys/vnode.h> 42 43 #include <i386/linux/linux.h> 44 #include <i386/linux/linux_proto.h> 45 #include <i386/linux/linux_util.h> 46 47 struct linux_newstat { 48 u_short stat_dev; 49 u_short __pad1; 50 u_long stat_ino; 51 u_short stat_mode; 52 u_short stat_nlink; 53 u_short stat_uid; 54 u_short stat_gid; 55 u_short stat_rdev; 56 u_short __pad2; 57 u_long stat_size; 58 u_long stat_blksize; 59 u_long stat_blocks; 60 u_long stat_atime; 61 u_long __unused1; 62 u_long stat_mtime; 63 u_long __unused2; 64 u_long stat_ctime; 65 u_long __unused3; 66 u_long __unused4; 67 u_long __unused5; 68 }; 69 70 struct linux_ustat 71 { 72 int f_tfree; 73 u_long f_tinode; 74 char f_fname[6]; 75 char f_fpack[6]; 76 }; 77 78 static int 79 newstat_copyout(struct stat *buf, void *ubuf) 80 { 81 struct linux_newstat tbuf; 82 83 tbuf.stat_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8); 84 tbuf.stat_ino = buf->st_ino; 85 tbuf.stat_mode = buf->st_mode; 86 tbuf.stat_nlink = buf->st_nlink; 87 tbuf.stat_uid = buf->st_uid; 88 tbuf.stat_gid = buf->st_gid; 89 tbuf.stat_rdev = buf->st_rdev; 90 tbuf.stat_size = buf->st_size; 91 tbuf.stat_atime = buf->st_atime; 92 tbuf.stat_mtime = buf->st_mtime; 93 tbuf.stat_ctime = buf->st_ctime; 94 tbuf.stat_blksize = buf->st_blksize; 95 tbuf.stat_blocks = buf->st_blocks; 96 97 return (copyout(&tbuf, ubuf, sizeof(tbuf))); 98 } 99 100 int 101 linux_newstat(struct proc *p, struct linux_newstat_args *args) 102 { 103 struct stat buf; 104 struct nameidata nd; 105 int error; 106 caddr_t sg; 107 108 sg = stackgap_init(); 109 CHECKALTEXIST(p, &sg, args->path); 110 111 #ifdef DEBUG 112 printf("Linux-emul(%ld): newstat(%s, *)\n", (long)p->p_pid, 113 args->path); 114 #endif 115 116 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE, 117 args->path, p); 118 error = namei(&nd); 119 if (error) 120 return (error); 121 122 error = vn_stat(nd.ni_vp, &buf, p); 123 vput(nd.ni_vp); 124 if (error) 125 return (error); 126 127 return (newstat_copyout(&buf, args->buf)); 128 } 129 130 /* 131 * Get file status; this version does not follow links. 132 */ 133 int 134 linux_newlstat(p, uap) 135 struct proc *p; 136 struct linux_newlstat_args *uap; 137 { 138 int error; 139 struct vnode *vp; 140 struct stat sb; 141 struct nameidata nd; 142 caddr_t sg; 143 144 sg = stackgap_init(); 145 CHECKALTEXIST(p, &sg, uap->path); 146 147 #ifdef DEBUG 148 printf("Linux-emul(%ld): newlstat(%s, *)\n", (long)p->p_pid, 149 uap->path); 150 #endif 151 152 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE, 153 uap->path, p); 154 error = namei(&nd); 155 if (error) 156 return (error); 157 158 vp = nd.ni_vp; 159 error = vn_stat(vp, &sb, p); 160 vput(vp); 161 if (error) 162 return (error); 163 164 return (newstat_copyout(&sb, uap->buf)); 165 } 166 167 int 168 linux_newfstat(struct proc *p, struct linux_newfstat_args *args) 169 { 170 struct filedesc *fdp; 171 struct file *fp; 172 struct stat buf; 173 int error; 174 175 fdp = p->p_fd; 176 177 #ifdef DEBUG 178 printf("Linux-emul(%ld): newfstat(%d, *)\n", (long)p->p_pid, args->fd); 179 #endif 180 181 if ((unsigned)args->fd >= fdp->fd_nfiles || 182 (fp = fdp->fd_ofiles[args->fd]) == NULL) 183 return (EBADF); 184 185 error = fo_stat(fp, &buf, p); 186 if (!error) 187 error = newstat_copyout(&buf, args->buf); 188 189 return (error); 190 } 191 192 struct linux_statfs_buf { 193 long ftype; 194 long fbsize; 195 long fblocks; 196 long fbfree; 197 long fbavail; 198 long ffiles; 199 long fffree; 200 linux_fsid_t ffsid; 201 long fnamelen; 202 long fspare[6]; 203 }; 204 205 int 206 linux_statfs(struct proc *p, struct linux_statfs_args *args) 207 { 208 struct mount *mp; 209 struct nameidata *ndp; 210 struct statfs *bsd_statfs; 211 struct nameidata nd; 212 struct linux_statfs_buf linux_statfs_buf; 213 int error; 214 caddr_t sg; 215 216 sg = stackgap_init(); 217 CHECKALTEXIST(p, &sg, args->path); 218 219 #ifdef DEBUG 220 printf("Linux-emul(%d): statfs(%s, *)\n", p->p_pid, args->path); 221 #endif 222 ndp = &nd; 223 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc); 224 error = namei(ndp); 225 if (error) 226 return error; 227 mp = ndp->ni_vp->v_mount; 228 bsd_statfs = &mp->mnt_stat; 229 vrele(ndp->ni_vp); 230 error = VFS_STATFS(mp, bsd_statfs, p); 231 if (error) 232 return error; 233 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 234 linux_statfs_buf.ftype = bsd_statfs->f_type; 235 linux_statfs_buf.fbsize = bsd_statfs->f_bsize; 236 linux_statfs_buf.fblocks = bsd_statfs->f_blocks; 237 linux_statfs_buf.fbfree = bsd_statfs->f_bfree; 238 linux_statfs_buf.fbavail = bsd_statfs->f_bavail; 239 linux_statfs_buf.fffree = bsd_statfs->f_ffree; 240 linux_statfs_buf.ffiles = bsd_statfs->f_files; 241 linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; 242 linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; 243 linux_statfs_buf.fnamelen = MAXNAMLEN; 244 return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf, 245 sizeof(struct linux_statfs_buf)); 246 } 247 248 int 249 linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args) 250 { 251 struct file *fp; 252 struct mount *mp; 253 struct statfs *bsd_statfs; 254 struct linux_statfs_buf linux_statfs_buf; 255 int error; 256 257 #ifdef DEBUG 258 printf("Linux-emul(%d): fstatfs(%d, *)\n", p->p_pid, args->fd); 259 #endif 260 error = getvnode(p->p_fd, args->fd, &fp); 261 if (error) 262 return error; 263 mp = ((struct vnode *)fp->f_data)->v_mount; 264 bsd_statfs = &mp->mnt_stat; 265 error = VFS_STATFS(mp, bsd_statfs, p); 266 if (error) 267 return error; 268 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 269 linux_statfs_buf.ftype = bsd_statfs->f_type; 270 linux_statfs_buf.fbsize = bsd_statfs->f_bsize; 271 linux_statfs_buf.fblocks = bsd_statfs->f_blocks; 272 linux_statfs_buf.fbfree = bsd_statfs->f_bfree; 273 linux_statfs_buf.fbavail = bsd_statfs->f_bavail; 274 linux_statfs_buf.fffree = bsd_statfs->f_ffree; 275 linux_statfs_buf.ffiles = bsd_statfs->f_files; 276 linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; 277 linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; 278 linux_statfs_buf.fnamelen = MAXNAMLEN; 279 return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf, 280 sizeof(struct linux_statfs_buf)); 281 } 282 283 int 284 linux_ustat(p, uap) 285 struct proc *p; 286 struct linux_ustat_args *uap; 287 { 288 struct linux_ustat lu; 289 dev_t dev; 290 struct vnode *vp; 291 struct statfs *stat; 292 int error; 293 294 #ifdef DEBUG 295 printf("Linux-emul(%ld): ustat(%d, *)\n", (long)p->p_pid, uap->dev); 296 #endif 297 298 /* 299 * lu.f_fname and lu.f_fpack are not used. They are always zeroed. 300 * lu.f_tinode and lu.f_tfree are set from the device's super block. 301 */ 302 bzero(&lu, sizeof(lu)); 303 304 /* 305 * XXX - Don't return an error if we can't find a vnode for the 306 * device. Our dev_t is 32-bits whereas Linux only has a 16-bits 307 * dev_t. The dev_t that is used now may as well be a truncated 308 * dev_t returned from previous syscalls. Just return a bzeroed 309 * ustat in that case. 310 */ 311 dev = makebdev(uap->dev >> 8, uap->dev & 0xFF); 312 if (vfinddev(dev, VBLK, &vp)) { 313 if (vp->v_mount == NULL) 314 return (EINVAL); 315 stat = &(vp->v_mount->mnt_stat); 316 error = VFS_STATFS(vp->v_mount, stat, p); 317 if (error) 318 return (error); 319 320 lu.f_tfree = stat->f_bfree; 321 lu.f_tinode = stat->f_ffree; 322 } 323 324 return (copyout(&lu, uap->ubuf, sizeof(lu))); 325 } 326