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authorFlorin Coras <fcoras@cisco.com>2019-11-06 16:24:29 -0800
committerDave Barach <openvpp@barachs.net>2019-11-07 16:09:06 +0000
commitc9dff181c8d135b95a12297c44bb4aa87b95b21d (patch)
tree3389c6d19bab96c0abbd8febdf0a8101f009a3db /extras/scripts/pci-nic-bind-to-kernel
parentc12eae73f925169597e20a8f8139c462e317404d (diff)
svm: fix byte accounting when allocating fifo header
Type: fix Change-Id: Ie50625271d257da814445ce13c2e6cd98986d523 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'extras/scripts/pci-nic-bind-to-kernel')
0 files changed, 0 insertions, 0 deletions
2' href='#n142'>142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * pci.c: Linux user space PCI bus management.
 *
 * Copyright (c) 2008 Eliot Dresselhaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <vlib/vlib.h>
#include <vlib/unix/unix.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>

clib_error_t *
foreach_directory_file (char *dir_name,
			clib_error_t * (*f) (void *arg, u8 * path_name,
					     u8 * file_name), void *arg,
			int scan_dirs)
{
  DIR *d;
  struct dirent *e;
  clib_error_t *error = 0;
  u8 *s, *t;

  d = opendir (dir_name);
  if (!d)
    {
      if (errno == ENOENT)
	return 0;
      return clib_error_return_unix (0, "open `%s'", dir_name);
    }

  s = t = 0;
  while (1)
    {
      e = readdir (d);
      if (!e)
	break;
      if (scan_dirs)
	{
	  if (e->d_type == DT_DIR
	      && (!strncmp (e->d_name, ".", 1) ||
		  !strncmp (e->d_name, "..", 2)))
	    continue;
	}
      else
	{
	  if (e->d_type == DT_DIR)
	    continue;
	}

      s = format (s, "%s/%s", dir_name, e->d_name);
      t = format (t, "%s", e->d_name);
      error = f (arg, s, t);
      _vec_len (s) = 0;
      _vec_len (t) = 0;

      if (error)
	break;
    }

  vec_free (s);
  closedir (d);

  return error;
}

clib_error_t *
vlib_unix_recursive_mkdir (char *path)
{
  clib_error_t *error = 0;
  char *c = 0;
  int i = 0;

  while (path[i] != 0)
    {
      if (c && path[i] == '/')
	{
	  vec_add1 (c, 0);
	  if ((mkdir (c, 0755)) && (errno != EEXIST))
	    {
	      error = clib_error_return_unix (0, "mkdir '%s'", c);
	      goto done;
	    }
	  _vec_len (c)--;
	}
      vec_add1 (c, path[i]);
      i++;
    }

  if ((mkdir (path, 0755)) && (errno != EEXIST))
    {
      error = clib_error_return_unix (0, "mkdir '%s'", path);
      goto done;
    }

done:
  vec_free (c);

  return error;
}

clib_error_t *
vlib_unix_validate_runtime_file (unix_main_t * um,
				 const char *path, u8 ** full_path)
{
  u8 *fp = 0;
  char *last_slash = 0;

  if (path[0] == '\0')
    {
      return clib_error_return (0, "path is an empty string");
    }
  else if (strncmp (path, "../", 3) == 0 || strstr (path, "/../"))
    {
      return clib_error_return (0, "'..' not allowed in runtime path");
    }
  else if (path[0] == '/')
    {
      /* Absolute path. Has to start with runtime directory */
      if (strncmp ((char *) um->runtime_dir, path,
		   strlen ((char *) um->runtime_dir)))
	{
	  return clib_error_return (0,
				    "file %s is not in runtime directory %s",
				    path, um->runtime_dir);
	}
      fp = format (0, "%s%c", path, '\0');
    }
  else
    {
      /* Relative path, just append to runtime */
      fp = format (0, "%s/%s%c", um->runtime_dir, path, '\0');
    }

  /* We don't want to create a directory out of the last file */
  if ((last_slash = strrchr ((char *) fp, '/')) != NULL)
    *last_slash = '\0';

  clib_error_t *error = vlib_unix_recursive_mkdir ((char *) fp);

  if (last_slash != NULL)
    *last_slash = '/';

  if (error)
    vec_free (fp);

  *full_path = fp;
  return error;
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */