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;
51 unix_file_n_bytes (char *file, uword * result)
55 if (stat (file, &s) < 0)
56 return clib_error_return_unix (0, "stat `%s'", file);
58 if (S_ISREG (s.st_mode))
63 return /* no error */ 0;
67 unix_file_read_contents (char *file, u8 * result, uword n_bytes)
71 clib_error_t *error = 0;
74 if ((fd = open (file, 0)) < 0)
75 return clib_error_return_unix (0, "open `%s'", file);
82 if ((n_read = read (fd, v + n_done, n_left)) < 0)
84 error = clib_error_return_unix (0, "open `%s'", file);
100 " `%s' expected to read %wd bytes; read only %wd",
101 file, n_bytes, n_bytes - n_left);
111 unix_file_contents (char *file, u8 ** result)
114 clib_error_t *error = 0;
117 if ((error = unix_file_n_bytes (file, &n_bytes)))
121 vec_resize (v, n_bytes);
123 error = unix_file_read_contents (file, v, n_bytes);
134 unix_proc_file_contents (char *file, u8 ** result)
140 /* Unfortunately, stat(/proc/XXX) returns zero... */
141 fd = open (file, O_RDONLY);
144 return clib_error_return_unix (0, "open `%s'", file);
146 vec_validate (rv, 4095);
150 bytes = read (fd, rv + pos, 4096);
155 return clib_error_return_unix (0, "read '%s'", file);
164 vec_validate (rv, pos + 4095);
171 void os_panic (void) __attribute__ ((weak));
179 void os_exit (int) __attribute__ ((weak));
187 void os_puts (u8 * string, uword string_length, uword is_error)
188 __attribute__ ((weak));
191 os_puts (u8 * string, uword string_length, uword is_error)
193 int cpu = os_get_thread_index ();
194 int nthreads = os_get_nthreads ();
196 int fd = is_error ? 2 : 1;
197 struct iovec iovs[2];
202 snprintf (buf, sizeof (buf), "%d: ", cpu);
204 iovs[n_iovs].iov_base = buf;
205 iovs[n_iovs].iov_len = strlen (buf);
209 iovs[n_iovs].iov_base = string;
210 iovs[n_iovs].iov_len = string_length;
213 if (writev (fd, iovs, n_iovs) < 0)
217 void os_out_of_memory (void) __attribute__ ((weak));
219 os_out_of_memory (void)
224 uword os_get_nthreads (void) __attribute__ ((weak));
226 os_get_nthreads (void)
232 * fd.io coding-style-patch-verification: ON
235 * eval: (c-set-style "gnu")