1 files changed, 68 insertions, 0 deletions
diff --git a/source3/smbd/dosmode.c b/source3/smbd/dosmode.c
index c1af18d80b..9db3e208b5 100644
--- a/source3/smbd/dosmode.c
+++ b/source3/smbd/dosmode.c
@@ -200,3 +200,71 @@ int dos_chmod(connection_struct *conn,char *fname,int dosmode,struct stat *st)
   return(sys_chmod(fname,unixmode));
 }
 
+
+/*******************************************************************
+Wrapper around sys_utime that possibly allows DOS semantics rather
+than POSIX.
+*******************************************************************/
+int file_utime(connection_struct *conn, char *fname, struct utimbuf *times)
+{
+  extern struct current_user current_user;
+  struct stat sb;
+  int ret = -1;
+
+  errno = 0;
+
+  if(sys_utime(fname, times) == 0)
+    return 0;
+
+  if((errno != EPERM) && (errno != EACCES))
+    return -1;
+
+  if(!lp_dos_filetimes(SNUM(conn)))
+    return -1;
+
+  /* We have permission (given by the Samba admin) to
+     break POSIX semantics and allow a user to change
+     the time on a file they don't own but can write to
+     (as DOS does).
+   */
+
+  if(sys_stat(fname,&sb) != 0)
+    return -1;
+
+  /* Check if we have write access. */
+  if (CAN_WRITE(conn)) {
+	  if (((sb.st_mode & S_IWOTH) ||
+	       conn->admin_user ||
+	       ((sb.st_mode & S_IWUSR) && current_user.uid==sb.st_uid) ||
+	       ((sb.st_mode & S_IWGRP) &&
+		in_group(sb.st_gid,current_user.gid,
+			 current_user.ngroups,current_user.groups)))) {
+		  /* We are allowed to become root and change the filetime. */
+		  become_root(False);
+		  ret = sys_utime(fname, times);
+		  unbecome_root(False);
+	  }
+  }
+
+  return ret;
+}
+  
+/*******************************************************************
+Change a filetime - possibly allowing DOS semantics.
+*******************************************************************/
+BOOL set_filetime(connection_struct *conn, char *fname, time_t mtime)
+{
+  struct utimbuf times;
+
+  if (null_mtime(mtime)) return(True);
+
+  times.modtime = times.actime = mtime;
+
+  if (file_utime(conn, fname, &times)) {
+    DEBUG(4,("set_filetime(%s) failed: %s\n",fname,strerror(errno)));
+  }
+  
+  return(True);
+} 
+
+