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2 pj 1
 
1063 tullio 2
/*
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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2 pj 19
#include <fs/types.h>
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#include <fs/errno.h>
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#include <fs/task.h>
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#include <fs/maccess.h>
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#include <fs/fcntl.h>
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#include "file.h"
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#include "inode.h"
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#include "dentry.h"
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#include "super.h"
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#include "fileop.h"
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#include "dentryop.h"
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#include "inodeop.h"
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#include "fsconst.h"
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#include "fs.h"
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#include "debug.h"
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int k_unlink(char *upathname)
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{
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  declare_buffer(char,pathname,MAXPATHNAME);
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  struct dentry *d;
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  int createflag;
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  __pid_t pid;
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  int len,res;
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  call_to_fs();
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  printkd("k_unlink: START");
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  pid=__get_pid();
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  len=__verify_read_nolen((char*)upathname);
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  if ((!len)||(len>MAXPATHNAMELEN)) return_from_fs(-EVERIFY);
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  __copy_from_user(pathname,upathname,len+1);
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  printkd("k_unlink: pathname copied");
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  createflag=DENTRY_NOCREATE;
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  d=find_dentry_from_ext(cwden_ptr(pid),(char *)pathname,&createflag);
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  printkd("k_unlink: dentry found");
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  if (d==NULL) return_from_fs(-ENOENT);
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  if (__S_ISDIR(d->d_inode->i_st.st_mode)) return_from_fs(-EPERM);
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  if (!(d->d_sb->sb_mopts.flags&MOUNT_FLAG_RW)) return_from_fs(-EROFS);
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  printkd("k_unlink: dentry is ok");
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  res=unlink_dentry(d);
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  printkd("k_unlink: dentry unlinked");
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  printkd("k_unlink: END");
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  return_from_fs(res);
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}