2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * pci.c: Linux user space PCI bus management.
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #include <vlib/vlib.h>
41 #include <vlib/unix/unix.h>
43 #include <sys/types.h>
49 foreach_directory_file (char * dir_name,
50 clib_error_t * (* f) (void * arg, u8 * path_name, u8 * file_name),
56 clib_error_t * error = 0;
59 d = opendir (dir_name);
62 /* System has no PCI bus. */
65 return clib_error_return_unix (0, "open `%s'", dir_name);
76 if (e->d_type == DT_DIR
77 && (! strcmp (e->d_name, ".")
78 || ! strcmp (e->d_name, "..")))
83 if (e->d_type == DT_DIR)
87 s = format (s, "%s/%s", dir_name, e->d_name);
88 t = format (t, "%s", e->d_name);
89 error = f (arg, s, t);
104 write_sys_fs (char * file_name, char * fmt, ...)
109 fd = open (file_name, O_WRONLY);
111 return clib_error_return_unix (0, "open `%s'", file_name);
115 s = va_format (0, fmt, &va);
118 if (write (fd, s, vec_len (s)) < 0)
119 return clib_error_return_unix (0, "write `%s'", file_name);
127 read_sys_fs (char * file_name, char * fmt, ...)
129 unformat_input_t input;
135 fd = open (file_name, O_RDONLY);
137 return clib_error_return_unix (0, "open `%s'", file_name);
139 vec_validate(s, 4095);
141 sz = read(fd, s, vec_len (s));
146 return clib_error_return_unix (0, "read `%s'", file_name);
150 unformat_init_vector(&input, s);
154 result = va_unformat (&input, fmt, &va);
161 return clib_error_return (0, "unformat error");