diff options
Diffstat (limited to 'src/vlib/unix/util.c')
| -rw-r--r-- | src/vlib/unix/util.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/vlib/unix/util.c b/src/vlib/unix/util.c new file mode 100644 index 00000000..5472751e --- /dev/null +++ b/src/vlib/unix/util.c @@ -0,0 +1,191 @@ +/* + * 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 + && (!strcmp (e->d_name, ".") || !strcmp (e->d_name, ".."))) + 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: + */ |