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: releng/11.0/sys/i386/ibcs2/ibcs2_stat.c 274476 2014-11-13 18:01:51Z kib $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/namei.h>
   35 #include <sys/fcntl.h>
   36 #include <sys/file.h>
   37 #include <sys/stat.h>
   38 #include <sys/filedesc.h>
   39 #include <sys/jail.h>
   40 #include <sys/kernel.h>
   41 #include <sys/mount.h>
   42 #include <sys/malloc.h>
   43 #include <sys/vnode.h>
   44 #include <sys/syscallsubr.h>
   45 #include <sys/sysctl.h>
   46 #include <sys/sysproto.h>
   47 
   48 #include <i386/ibcs2/ibcs2_signal.h>
   49 #include <i386/ibcs2/ibcs2_stat.h>
   50 #include <i386/ibcs2/ibcs2_statfs.h>
   51 #include <i386/ibcs2/ibcs2_proto.h>
   52 #include <i386/ibcs2/ibcs2_util.h>
   53 #include <i386/ibcs2/ibcs2_utsname.h>
   54 
   55 
   56 static void bsd_stat2ibcs_stat(struct stat *, struct ibcs2_stat *);
   57 static int  cvt_statfs(struct statfs *, caddr_t, int);
   58 
   59 static void
   60 bsd_stat2ibcs_stat(st, st4)
   61         struct stat *st;
   62         struct ibcs2_stat *st4;
   63 {
   64         bzero(st4, sizeof(*st4));
   65         st4->st_dev  = (ibcs2_dev_t)st->st_dev;
   66         st4->st_ino  = (ibcs2_ino_t)st->st_ino;
   67         st4->st_mode = (ibcs2_mode_t)st->st_mode;
   68         st4->st_nlink= (ibcs2_nlink_t)st->st_nlink;
   69         st4->st_uid  = (ibcs2_uid_t)st->st_uid;
   70         st4->st_gid  = (ibcs2_gid_t)st->st_gid;
   71         st4->st_rdev = (ibcs2_dev_t)st->st_rdev;
   72         if (st->st_size < (quad_t)1 << 32)
   73                 st4->st_size = (ibcs2_off_t)st->st_size;
   74         else
   75                 st4->st_size = -2;
   76         st4->st_atim = (ibcs2_time_t)st->st_atim.tv_sec;
   77         st4->st_mtim = (ibcs2_time_t)st->st_mtim.tv_sec;
   78         st4->st_ctim = (ibcs2_time_t)st->st_ctim.tv_sec;
   79 }
   80 
   81 static int
   82 cvt_statfs(sp, buf, len)
   83         struct statfs *sp;
   84         caddr_t buf;
   85         int len;
   86 {
   87         struct ibcs2_statfs ssfs;
   88 
   89         if (len < 0)
   90                 return (EINVAL);
   91         else if (len > sizeof(ssfs))
   92                 len = sizeof(ssfs);
   93         bzero(&ssfs, sizeof ssfs);
   94         ssfs.f_fstyp = 0;
   95         ssfs.f_bsize = sp->f_bsize;
   96         ssfs.f_frsize = 0;
   97         ssfs.f_blocks = sp->f_blocks;
   98         ssfs.f_bfree = sp->f_bfree;
   99         ssfs.f_files = sp->f_files;
  100         ssfs.f_ffree = sp->f_ffree;
  101         ssfs.f_fname[0] = 0;
  102         ssfs.f_fpack[0] = 0;
  103         return copyout((caddr_t)&ssfs, buf, len);
  104 }       
  105 
  106 int
  107 ibcs2_statfs(td, uap)
  108         struct thread *td;
  109         struct ibcs2_statfs_args *uap;
  110 {
  111         struct statfs sf;
  112         char *path;
  113         int error;
  114 
  115         CHECKALTEXIST(td, uap->path, &path);
  116         error = kern_statfs(td, path, UIO_SYSSPACE, &sf);
  117         free(path, M_TEMP);
  118         if (error)
  119                 return (error);
  120         return cvt_statfs(&sf, (caddr_t)uap->buf, uap->len);
  121 }
  122 
  123 int
  124 ibcs2_fstatfs(td, uap)
  125         struct thread *td;
  126         struct ibcs2_fstatfs_args *uap;
  127 {
  128         struct statfs sf;
  129         int error;
  130 
  131         error = kern_fstatfs(td, uap->fd, &sf);
  132         if (error)
  133                 return (error);
  134         return cvt_statfs(&sf, (caddr_t)uap->buf, uap->len);
  135 }
  136 
  137 int
  138 ibcs2_stat(td, uap)
  139         struct thread *td;
  140         struct ibcs2_stat_args *uap;
  141 {
  142         struct ibcs2_stat ibcs2_st;
  143         struct stat st;
  144         char *path;
  145         int error;
  146 
  147         CHECKALTEXIST(td, uap->path, &path);
  148 
  149         error = kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st, NULL);
  150         free(path, M_TEMP);
  151         if (error)
  152                 return (error);
  153         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  154         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  155                        ibcs2_stat_len);
  156 }
  157 
  158 int
  159 ibcs2_lstat(td, uap)
  160         struct thread *td;
  161         struct ibcs2_lstat_args *uap;
  162 {
  163         struct ibcs2_stat ibcs2_st;
  164         struct stat st;
  165         char *path;
  166         int error;
  167 
  168         CHECKALTEXIST(td, uap->path, &path);
  169 
  170         error = kern_statat(td, AT_SYMLINK_NOFOLLOW, AT_FDCWD, path,
  171             UIO_SYSSPACE, &st, NULL);
  172         free(path, M_TEMP);
  173         if (error)
  174                 return (error);
  175         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  176         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  177                        ibcs2_stat_len);
  178 }
  179 
  180 int
  181 ibcs2_fstat(td, uap)
  182         struct thread *td;
  183         struct ibcs2_fstat_args *uap;
  184 {
  185         struct ibcs2_stat ibcs2_st;
  186         struct stat st;
  187         int error;
  188 
  189         error = kern_fstat(td, uap->fd, &st);
  190         if (error)
  191                 return (error);
  192         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  193         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  194                        ibcs2_stat_len);
  195 }
  196 
  197 int
  198 ibcs2_utssys(td, uap)
  199         struct thread *td;
  200         struct ibcs2_utssys_args *uap;
  201 {
  202         switch (uap->flag) {
  203         case 0:                 /* uname(2) */
  204         {
  205                 char machine_name[9], *p;
  206                 struct ibcs2_utsname sut;
  207                 bzero(&sut, ibcs2_utsname_len);
  208 
  209                 strncpy(sut.sysname,
  210                         IBCS2_UNAME_SYSNAME, sizeof(sut.sysname) - 1);
  211                 strncpy(sut.release,
  212                         IBCS2_UNAME_RELEASE, sizeof(sut.release) - 1);
  213                 strncpy(sut.version,
  214                         IBCS2_UNAME_VERSION, sizeof(sut.version) - 1);
  215                 getcredhostname(td->td_ucred, machine_name,
  216                     sizeof(machine_name) - 1);
  217                 p = strchr(machine_name, '.');
  218                 if ( p )
  219                         *p = '\0';
  220                 strncpy(sut.nodename, machine_name, sizeof(sut.nodename) - 1);
  221                 strncpy(sut.machine, machine, sizeof(sut.machine) - 1);
  222 
  223                 DPRINTF(("IBCS2 uname: sys=%s rel=%s ver=%s node=%s mach=%s\n",
  224                          sut.sysname, sut.release, sut.version, sut.nodename,
  225                          sut.machine));
  226                 return copyout((caddr_t)&sut, (caddr_t)uap->a1,
  227                                ibcs2_utsname_len);
  228         }
  229 
  230         case 2:                 /* ustat(2) */
  231         {
  232                 return ENOSYS;  /* XXX - TODO */
  233         }
  234 
  235         default:
  236                 return ENOSYS;
  237         }
  238 }

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