The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/ibcs2/ibcs2_stat.c

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    1 /*-
    2  * Copyright (c) 1995 Scott Bartram
    3  * Copyright (c) 1995 Steven Wallace
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   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 without 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 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: src/sys/i386/ibcs2/ibcs2_stat.c,v 1.24.4.1 2005/01/31 23:26:03 imp Exp $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/namei.h>
   35 #include <sys/file.h>
   36 #include <sys/stat.h>
   37 #include <sys/filedesc.h>
   38 #include <sys/jail.h>
   39 #include <sys/kernel.h>
   40 #include <sys/mount.h>
   41 #include <sys/vnode.h>
   42 #include <sys/sysctl.h>
   43 #include <sys/sysproto.h>
   44 
   45 #include <i386/ibcs2/ibcs2_signal.h>
   46 #include <i386/ibcs2/ibcs2_stat.h>
   47 #include <i386/ibcs2/ibcs2_statfs.h>
   48 #include <i386/ibcs2/ibcs2_proto.h>
   49 #include <i386/ibcs2/ibcs2_util.h>
   50 #include <i386/ibcs2/ibcs2_utsname.h>
   51 
   52 
   53 static void bsd_stat2ibcs_stat(struct stat *, struct ibcs2_stat *);
   54 static int  cvt_statfs(struct statfs *, caddr_t, int);
   55 
   56 static void
   57 bsd_stat2ibcs_stat(st, st4)
   58         struct stat *st;
   59         struct ibcs2_stat *st4;
   60 {
   61         bzero(st4, sizeof(*st4));
   62         st4->st_dev  = (ibcs2_dev_t)st->st_dev;
   63         st4->st_ino  = (ibcs2_ino_t)st->st_ino;
   64         st4->st_mode = (ibcs2_mode_t)st->st_mode;
   65         st4->st_nlink= (ibcs2_nlink_t)st->st_nlink;
   66         st4->st_uid  = (ibcs2_uid_t)st->st_uid;
   67         st4->st_gid  = (ibcs2_gid_t)st->st_gid;
   68         st4->st_rdev = (ibcs2_dev_t)st->st_rdev;
   69         if (st->st_size < (quad_t)1 << 32)
   70                 st4->st_size = (ibcs2_off_t)st->st_size;
   71         else
   72                 st4->st_size = -2;
   73         st4->st_atim = (ibcs2_time_t)st->st_atime;
   74         st4->st_mtim = (ibcs2_time_t)st->st_mtime;
   75         st4->st_ctim = (ibcs2_time_t)st->st_ctime;
   76 }
   77 
   78 static int
   79 cvt_statfs(sp, buf, len)
   80         struct statfs *sp;
   81         caddr_t buf;
   82         int len;
   83 {
   84         struct ibcs2_statfs ssfs;
   85 
   86         if (len < 0)
   87                 return (EINVAL);
   88         else if (len > sizeof(ssfs))
   89                 len = sizeof(ssfs);
   90         bzero(&ssfs, sizeof ssfs);
   91         ssfs.f_fstyp = 0;
   92         ssfs.f_bsize = sp->f_bsize;
   93         ssfs.f_frsize = 0;
   94         ssfs.f_blocks = sp->f_blocks;
   95         ssfs.f_bfree = sp->f_bfree;
   96         ssfs.f_files = sp->f_files;
   97         ssfs.f_ffree = sp->f_ffree;
   98         ssfs.f_fname[0] = 0;
   99         ssfs.f_fpack[0] = 0;
  100         return copyout((caddr_t)&ssfs, buf, len);
  101 }       
  102 
  103 int
  104 ibcs2_statfs(td, uap)
  105         struct thread *td;
  106         struct ibcs2_statfs_args *uap;
  107 {
  108         register struct mount *mp;
  109         register struct statfs *sp;
  110         int error;
  111         struct nameidata nd;
  112         caddr_t sg = stackgap_init();
  113 
  114         CHECKALTEXIST(td, &sg, uap->path);
  115         NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
  116         if ((error = namei(&nd)) != 0)
  117                 return (error);
  118         NDFREE(&nd, NDF_ONLY_PNBUF);
  119         mp = nd.ni_vp->v_mount;
  120         sp = &mp->mnt_stat;
  121         vrele(nd.ni_vp);
  122         if ((error = VFS_STATFS(mp, sp, td)) != 0)
  123                 return (error);
  124         sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
  125         return cvt_statfs(sp, (caddr_t)uap->buf, uap->len);
  126 }
  127 
  128 int
  129 ibcs2_fstatfs(td, uap)
  130         struct thread *td;
  131         struct ibcs2_fstatfs_args *uap;
  132 {
  133         struct file *fp;
  134         struct mount *mp;
  135         register struct statfs *sp;
  136         int error;
  137 
  138         if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
  139                 return (error);
  140         mp = fp->f_vnode->v_mount;
  141         sp = &mp->mnt_stat;
  142         error = VFS_STATFS(mp, sp, td);
  143         fdrop(fp, td);
  144         if (error != 0)
  145                 return (error);
  146         sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
  147         return cvt_statfs(sp, (caddr_t)uap->buf, uap->len);
  148 }
  149 
  150 int
  151 ibcs2_stat(td, uap)
  152         struct thread *td;
  153         struct ibcs2_stat_args *uap;
  154 {
  155         struct stat st;
  156         struct ibcs2_stat ibcs2_st;
  157         struct stat_args cup;
  158         int error;
  159         caddr_t sg = stackgap_init();
  160 
  161         CHECKALTEXIST(td, &sg, uap->path);
  162         cup.path = uap->path;
  163         cup.ub = stackgap_alloc(&sg, sizeof(st));
  164 
  165         if ((error = stat(td, &cup)) != 0)
  166                 return error;
  167 
  168         if ((error = copyin(cup.ub, &st, sizeof(st))) != 0)
  169                 return error;
  170         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  171         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  172                        ibcs2_stat_len);
  173 }
  174 
  175 int
  176 ibcs2_lstat(td, uap)
  177         struct thread *td;
  178         struct ibcs2_lstat_args *uap;
  179 {
  180         struct stat st;
  181         struct ibcs2_stat ibcs2_st;
  182         struct lstat_args cup;
  183         int error;
  184         caddr_t sg = stackgap_init();
  185 
  186         CHECKALTEXIST(td, &sg, uap->path);
  187         cup.path = uap->path;
  188         cup.ub = stackgap_alloc(&sg, sizeof(st));
  189 
  190         if ((error = lstat(td, &cup)) != 0)
  191                 return error;
  192 
  193         if ((error = copyin(cup.ub, &st, sizeof(st))) != 0)
  194                 return error;
  195         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  196         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  197                        ibcs2_stat_len);
  198 }
  199 
  200 int
  201 ibcs2_fstat(td, uap)
  202         struct thread *td;
  203         struct ibcs2_fstat_args *uap;
  204 {
  205         struct stat st;
  206         struct ibcs2_stat ibcs2_st;
  207         struct fstat_args cup;
  208         int error;
  209         caddr_t sg = stackgap_init();
  210 
  211         cup.fd = uap->fd;
  212         cup.sb = stackgap_alloc(&sg, sizeof(st));
  213 
  214         if ((error = fstat(td, &cup)) != 0)
  215                 return error;
  216 
  217         if ((error = copyin(cup.sb, &st, sizeof(st))) != 0)
  218                 return error;
  219         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  220         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  221                        ibcs2_stat_len);
  222 }
  223 
  224 int
  225 ibcs2_utssys(td, uap)
  226         struct thread *td;
  227         struct ibcs2_utssys_args *uap;
  228 {
  229         switch (uap->flag) {
  230         case 0:                 /* uname(2) */
  231         {
  232                 char machine_name[9], *p;
  233                 struct ibcs2_utsname sut;
  234                 bzero(&sut, ibcs2_utsname_len);
  235 
  236                 strncpy(sut.sysname,
  237                         IBCS2_UNAME_SYSNAME, sizeof(sut.sysname) - 1);
  238                 strncpy(sut.release,
  239                         IBCS2_UNAME_RELEASE, sizeof(sut.release) - 1);
  240                 strncpy(sut.version,
  241                         IBCS2_UNAME_VERSION, sizeof(sut.version) - 1);
  242                 getcredhostname(td->td_ucred, machine_name,
  243                     sizeof(machine_name) - 1);
  244                 p = index(machine_name, '.');
  245                 if ( p )
  246                         *p = '\0';
  247                 strncpy(sut.nodename, machine_name, sizeof(sut.nodename) - 1);
  248                 strncpy(sut.machine, machine, sizeof(sut.machine) - 1);
  249 
  250                 DPRINTF(("IBCS2 uname: sys=%s rel=%s ver=%s node=%s mach=%s\n",
  251                          sut.sysname, sut.release, sut.version, sut.nodename,
  252                          sut.machine));
  253                 return copyout((caddr_t)&sut, (caddr_t)uap->a1,
  254                                ibcs2_utsname_len);
  255         }
  256 
  257         case 2:                 /* ustat(2) */
  258         {
  259                 return ENOSYS;  /* XXX - TODO */
  260         }
  261 
  262         default:
  263                 return ENOSYS;
  264         }
  265 }

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