2 * Copyright (c) 2015 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 Copyright (c) 2005 Eliot Dresselhaus
18 Permission is hereby granted, free of charge, to any person obtaining
19 a copy of this software and associated documentation files (the
20 "Software"), to deal in the Software without restriction, including
21 without limitation the rights to use, copy, modify, merge, publish,
22 distribute, sublicense, and/or sell copies of the Software, and to
23 permit persons to whom the Software is furnished to do so, subject to
24 the following conditions:
26 The above copyright notice and this permission notice shall be
27 included in all copies or substantial portions of the Software.
29 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
33 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
34 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
35 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38 #include <vppinfra/error.h>
39 #include <vppinfra/os.h>
40 #include <vppinfra/unix.h>
43 #include <sys/types.h>
44 #include <sys/uio.h> /* writev */
46 #include <stdio.h> /* for sprintf */
48 __thread uword __os_thread_index = 0;
49 __thread uword __os_numa_index = 0;
52 clib_file_n_bytes (char *file, uword * result)
56 if (stat (file, &s) < 0)
57 return clib_error_return_unix (0, "stat `%s'", file);
59 if (S_ISREG (s.st_mode))
64 return /* no error */ 0;
68 clib_file_read_contents (char *file, u8 * result, uword n_bytes)
72 clib_error_t *error = 0;
75 if ((fd = open (file, 0)) < 0)
76 return clib_error_return_unix (0, "open `%s'", file);
83 if ((n_read = read (fd, v + n_done, n_left)) < 0)
85 error = clib_error_return_unix (0, "open `%s'", file);
100 clib_error_return (0,
101 " `%s' expected to read %wd bytes; read only %wd",
102 file, n_bytes, n_bytes - n_left);
112 clib_file_contents (char *file, u8 ** result)
115 clib_error_t *error = 0;
118 if ((error = clib_file_n_bytes (file, &n_bytes)))
122 vec_resize (v, n_bytes);
124 error = clib_file_read_contents (file, v, n_bytes);
135 unix_proc_file_contents (char *file, u8 ** result)
141 /* Unfortunately, stat(/proc/XXX) returns zero... */
142 fd = open (file, O_RDONLY);
145 return clib_error_return_unix (0, "open `%s'", file);
147 vec_validate (rv, 4095);
151 bytes = read (fd, rv + pos, 4096);
156 return clib_error_return_unix (0, "read '%s'", file);
165 vec_validate (rv, pos + 4095);
172 void os_panic (void) __attribute__ ((weak));
180 void os_exit (int) __attribute__ ((weak));
188 void os_puts (u8 * string, uword string_length, uword is_error)
189 __attribute__ ((weak));
192 os_puts (u8 * string, uword string_length, uword is_error)
194 int cpu = os_get_thread_index ();
195 int nthreads = os_get_nthreads ();
197 int fd = is_error ? 2 : 1;
198 struct iovec iovs[2];
203 snprintf (buf, sizeof (buf), "%d: ", cpu);
205 iovs[n_iovs].iov_base = buf;
206 iovs[n_iovs].iov_len = strlen (buf);
210 iovs[n_iovs].iov_base = string;
211 iovs[n_iovs].iov_len = string_length;
214 if (writev (fd, iovs, n_iovs) < 0)
218 void os_out_of_memory (void) __attribute__ ((weak));
220 os_out_of_memory (void)
225 uword os_get_nthreads (void) __attribute__ ((weak));
227 os_get_nthreads (void)
233 * fd.io coding-style-patch-verification: ON
236 * eval: (c-set-style "gnu")