sys/emulation/dragonfly12/dfbsd12_stat.c

   1 /*-
   2  * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Joerg Sonnenberger <joerg@bec.de>.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  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
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/emulation/dragonfly12/dfbsd12_stat.c,v 1.3 2006/06/05 07:26:08 dillon Exp $
  35  */
  36
  37 #include "opt_compatdf12.h"
  38
  39 #include <sys/param.h>
  40 #include <sys/kern_syscall.h>
  41 #include <sys/mount.h>
  42 #include <sys/nlookup.h>
  43 #include <sys/proc.h>
  44 #include <sys/stat.h>
  45 #include <sys/sysproto.h>
  46 #include <sys/systm.h>
  47 #include <sys/thread.h>
  48 #include <sys/vnode.h>
  49 #include <emulation/dragonfly12/stat.h>
  50
  51 static void
  52 cvtstat(struct dfbsd12_stat *oldstat, struct stat *newstat)
  53 {
  54         bzero(oldstat, sizeof(oldstat));
  55
  56         oldstat->st_dev = newstat->st_dev;
  57         oldstat->st_ino = newstat->st_ino;      /* truncation */
  58         oldstat->st_mode = newstat->st_mode;
  59         oldstat->st_nlink = newstat->st_nlink;  /* truncation */
  60         oldstat->st_uid = newstat->st_uid;
  61         oldstat->st_gid = newstat->st_gid;
  62         oldstat->st_rdev = newstat->st_rdev;
  63         oldstat->st_atimespec = newstat->st_atimespec;
  64         oldstat->st_mtimespec = newstat->st_mtimespec;
  65         oldstat->st_ctimespec = newstat->st_ctimespec;
  66         oldstat->st_size = newstat->st_size;
  67         oldstat->st_blocks = newstat->st_blocks;
  68         oldstat->st_blksize = newstat->st_blksize;
  69         oldstat->st_flags = newstat->st_flags;
  70         oldstat->st_gen = newstat->st_gen;
  71 }
  72
  73 /*
  74  * stat_args(char *path, struct dfbsd12_stat *ub)
  75  *
  76  * Get file status; this version follows links.
  77  */
  78 int
  79 sys_dfbsd12_stat(struct dfbsd12_stat_args *uap)
  80 {
  81         struct nlookupdata nd;
  82         struct dfbsd12_stat ost;
  83         struct stat st;
  84         int error;
  85
  86         error = nlookup_init(&nd, uap->path, UIO_USERSPACE, NLC_FOLLOW);
  87         if (error == 0) {
  88                 error = kern_stat(&nd, &st);
  89                 if (error == 0) {
  90                         cvtstat(&ost, &st);
  91                         error = copyout(&ost, uap->ub, sizeof(ost));
  92                 }
  93         }
  94         nlookup_done(&nd);
  95         return (error);
  96 }
  97
  98 /*
  99  * lstat_args(char *path, struct dfbsd12_stat *ub)
 100  *
 101  * Get file status; this version does not follow links.
 102  */
 103 int
 104 sys_dfbsd12_lstat(struct dfbsd12_lstat_args *uap)
 105 {
 106         struct nlookupdata nd;
 107         struct dfbsd12_stat ost;
 108         struct stat st;
 109         int error;
 110
 111         error = nlookup_init(&nd, uap->path, UIO_USERSPACE, 0);
 112         if (error == 0) {
 113                 error = kern_stat(&nd, &st);
 114                 if (error == 0) {
 115                         cvtstat(&ost, &st);
 116                         error = copyout(&ost, uap->ub, sizeof(ost));
 117                 }
 118         }
 119         nlookup_done(&nd);
 120         return (error);
 121 }
 122
 123 /*
 124  * fhstat_args(struct fhandle *u_fhp, struct dfbsd12_stat *sb)
 125  */
 126 int
 127 sys_dfbsd12_fhstat(struct dfbsd12_fhstat_args *uap)
 128 {
 129         struct thread *td = curthread;
 130         struct dfbsd12_stat osb;
 131         struct stat sb;
 132         fhandle_t fh;
 133         struct mount *mp;
 134         struct vnode *vp;
 135         int error;
 136
 137         /*
 138          * Must be super user
 139          */
 140         error = suser(td);
 141         if (error)
 142                 return (error);
 143
 144         error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
 145         if (error)
 146                 return (error);
 147
 148         if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
 149                 return (ESTALE);
 150         if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp)))
 151                 return (error);
 152         error = vn_stat(vp, &sb, td->td_proc->p_ucred);
 153         vput(vp);
 154         if (error)
 155                 return (error);
 156         cvtstat(&osb, &sb);
 157         error = copyout(&osb, uap->sb, sizeof(osb));
 158         return (error);
 159 }
 160
 161 /*
 162  * dfbsd12_fstat_args(int fd, struct dfbsd12_stat *sb)
 163  */
 164 int
 165 sys_dfbsd12_fstat(struct dfbsd12_fstat_args *uap)
 166 {
 167         struct dfbsd12_stat ost;
 168         struct stat st;
 169         int error;
 170
 171         error = kern_fstat(uap->fd, &st);
 172
 173         if (error == 0) {
 174                 cvtstat(&ost, &st);
 175                 error = copyout(&ost, uap->sb, sizeof(ost));
 176         }
 177         return (error);
 178 }