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  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1995 Scott Bartram
    5  * Copyright (c) 1995 Steven Wallace
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. The name of the author may not be used to endorse or promote products
   17  *    derived from this software without specific prior written permission
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: stable/12/sys/i386/ibcs2/ibcs2_stat.c 326260 2017-11-27 15:08:52Z pfg $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/namei.h>
   37 #include <sys/fcntl.h>
   38 #include <sys/file.h>
   39 #include <sys/stat.h>
   40 #include <sys/filedesc.h>
   41 #include <sys/jail.h>
   42 #include <sys/kernel.h>
   43 #include <sys/malloc.h>
   44 #include <sys/mount.h>
   45 #include <sys/malloc.h>
   46 #include <sys/vnode.h>
   47 #include <sys/syscallsubr.h>
   48 #include <sys/sysctl.h>
   49 #include <sys/sysproto.h>
   50 
   51 #include <i386/ibcs2/ibcs2_signal.h>
   52 #include <i386/ibcs2/ibcs2_stat.h>
   53 #include <i386/ibcs2/ibcs2_statfs.h>
   54 #include <i386/ibcs2/ibcs2_proto.h>
   55 #include <i386/ibcs2/ibcs2_util.h>
   56 #include <i386/ibcs2/ibcs2_utsname.h>
   57 
   58 
   59 static void bsd_stat2ibcs_stat(struct stat *, struct ibcs2_stat *);
   60 static int  cvt_statfs(struct statfs *, caddr_t, int);
   61 
   62 static void
   63 bsd_stat2ibcs_stat(st, st4)
   64         struct stat *st;
   65         struct ibcs2_stat *st4;
   66 {
   67         bzero(st4, sizeof(*st4));
   68         st4->st_dev  = (ibcs2_dev_t)st->st_dev;
   69         st4->st_ino  = (ibcs2_ino_t)st->st_ino;
   70         st4->st_mode = (ibcs2_mode_t)st->st_mode;
   71         st4->st_nlink= (ibcs2_nlink_t)st->st_nlink;
   72         st4->st_uid  = (ibcs2_uid_t)st->st_uid;
   73         st4->st_gid  = (ibcs2_gid_t)st->st_gid;
   74         st4->st_rdev = (ibcs2_dev_t)st->st_rdev;
   75         if (st->st_size < (quad_t)1 << 32)
   76                 st4->st_size = (ibcs2_off_t)st->st_size;
   77         else
   78                 st4->st_size = -2;
   79         st4->st_atim = (ibcs2_time_t)st->st_atim.tv_sec;
   80         st4->st_mtim = (ibcs2_time_t)st->st_mtim.tv_sec;
   81         st4->st_ctim = (ibcs2_time_t)st->st_ctim.tv_sec;
   82 }
   83 
   84 static int
   85 cvt_statfs(sp, buf, len)
   86         struct statfs *sp;
   87         caddr_t buf;
   88         int len;
   89 {
   90         struct ibcs2_statfs ssfs;
   91 
   92         if (len < 0)
   93                 return (EINVAL);
   94         else if (len > sizeof(ssfs))
   95                 len = sizeof(ssfs);
   96         bzero(&ssfs, sizeof ssfs);
   97         ssfs.f_fstyp = 0;
   98         ssfs.f_bsize = sp->f_bsize;
   99         ssfs.f_frsize = 0;
  100         ssfs.f_blocks = sp->f_blocks;
  101         ssfs.f_bfree = sp->f_bfree;
  102         ssfs.f_files = sp->f_files;
  103         ssfs.f_ffree = sp->f_ffree;
  104         ssfs.f_fname[0] = 0;
  105         ssfs.f_fpack[0] = 0;
  106         return copyout((caddr_t)&ssfs, buf, len);
  107 }       
  108 
  109 int
  110 ibcs2_statfs(td, uap)
  111         struct thread *td;
  112         struct ibcs2_statfs_args *uap;
  113 {
  114         struct statfs *sf;
  115         char *path;
  116         int error;
  117 
  118         CHECKALTEXIST(td, uap->path, &path);
  119         sf = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
  120         error = kern_statfs(td, path, UIO_SYSSPACE, sf);
  121         free(path, M_TEMP);
  122         if (error == 0)
  123                 error = cvt_statfs(sf, (caddr_t)uap->buf, uap->len);
  124         free(sf, M_STATFS);
  125         return (error);
  126 }
  127 
  128 int
  129 ibcs2_fstatfs(td, uap)
  130         struct thread *td;
  131         struct ibcs2_fstatfs_args *uap;
  132 {
  133         struct statfs *sf;
  134         int error;
  135 
  136         sf = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
  137         error = kern_fstatfs(td, uap->fd, sf);
  138         if (error == 0)
  139                 error = cvt_statfs(sf, (caddr_t)uap->buf, uap->len);
  140         free(sf, M_STATFS);
  141         return (error);
  142 }
  143 
  144 int
  145 ibcs2_stat(td, uap)
  146         struct thread *td;
  147         struct ibcs2_stat_args *uap;
  148 {
  149         struct ibcs2_stat ibcs2_st;
  150         struct stat st;
  151         char *path;
  152         int error;
  153 
  154         CHECKALTEXIST(td, uap->path, &path);
  155 
  156         error = kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st, NULL);
  157         free(path, M_TEMP);
  158         if (error)
  159                 return (error);
  160         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  161         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  162                        ibcs2_stat_len);
  163 }
  164 
  165 int
  166 ibcs2_lstat(td, uap)
  167         struct thread *td;
  168         struct ibcs2_lstat_args *uap;
  169 {
  170         struct ibcs2_stat ibcs2_st;
  171         struct stat st;
  172         char *path;
  173         int error;
  174 
  175         CHECKALTEXIST(td, uap->path, &path);
  176 
  177         error = kern_statat(td, AT_SYMLINK_NOFOLLOW, AT_FDCWD, path,
  178             UIO_SYSSPACE, &st, NULL);
  179         free(path, M_TEMP);
  180         if (error)
  181                 return (error);
  182         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  183         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  184                        ibcs2_stat_len);
  185 }
  186 
  187 int
  188 ibcs2_fstat(td, uap)
  189         struct thread *td;
  190         struct ibcs2_fstat_args *uap;
  191 {
  192         struct ibcs2_stat ibcs2_st;
  193         struct stat st;
  194         int error;
  195 
  196         error = kern_fstat(td, uap->fd, &st);
  197         if (error)
  198                 return (error);
  199         bsd_stat2ibcs_stat(&st, &ibcs2_st);
  200         return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
  201                        ibcs2_stat_len);
  202 }
  203 
  204 int
  205 ibcs2_utssys(td, uap)
  206         struct thread *td;
  207         struct ibcs2_utssys_args *uap;
  208 {
  209         switch (uap->flag) {
  210         case 0:                 /* uname(2) */
  211         {
  212                 char machine_name[9], *p;
  213                 struct ibcs2_utsname sut;
  214                 bzero(&sut, ibcs2_utsname_len);
  215 
  216                 strncpy(sut.sysname,
  217                         IBCS2_UNAME_SYSNAME, sizeof(sut.sysname) - 1);
  218                 strncpy(sut.release,
  219                         IBCS2_UNAME_RELEASE, sizeof(sut.release) - 1);
  220                 strncpy(sut.version,
  221                         IBCS2_UNAME_VERSION, sizeof(sut.version) - 1);
  222                 getcredhostname(td->td_ucred, machine_name,
  223                     sizeof(machine_name) - 1);
  224                 p = strchr(machine_name, '.');
  225                 if ( p )
  226                         *p = '\0';
  227                 strncpy(sut.nodename, machine_name, sizeof(sut.nodename) - 1);
  228                 strncpy(sut.machine, machine, sizeof(sut.machine) - 1);
  229 
  230                 DPRINTF(("IBCS2 uname: sys=%s rel=%s ver=%s node=%s mach=%s\n",
  231                          sut.sysname, sut.release, sut.version, sut.nodename,
  232                          sut.machine));
  233                 return copyout((caddr_t)&sut, (caddr_t)uap->a1,
  234                                ibcs2_utsname_len);
  235         }
  236 
  237         case 2:                 /* ustat(2) */
  238         {
  239                 return ENOSYS;  /* XXX - TODO */
  240         }
  241 
  242         default:
  243                 return ENOSYS;
  244         }
  245 }

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