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 */
49 unix_file_n_bytes (char *file, uword * result)
53 if (stat (file, &s) < 0)
54 return clib_error_return_unix (0, "stat `%s'", file);
56 if (S_ISREG (s.st_mode))
61 return /* no error */ 0;
65 unix_file_read_contents (char *file, u8 * result, uword n_bytes)
69 clib_error_t *error = 0;
72 if ((fd = open (file, 0)) < 0)
73 return clib_error_return_unix (0, "open `%s'", file);
80 if ((n_read = read (fd, v + n_done, n_left)) < 0)
82 error = clib_error_return_unix (0, "open `%s'", file);
98 " `%s' expected to read %wd bytes; read only %wd",
99 file, n_bytes, n_bytes - n_left);
109 unix_file_contents (char *file, u8 ** result)
112 clib_error_t *error = 0;
115 if ((error = unix_file_n_bytes (file, &n_bytes)))
119 vec_resize (v, n_bytes);
121 error = unix_file_read_contents (file, v, n_bytes);
132 unix_proc_file_contents (char *file, u8 ** result)
138 /* Unfortunately, stat(/proc/XXX) returns zero... */
139 fd = open (file, O_RDONLY);
142 return clib_error_return_unix (0, "open `%s'", file);
144 vec_validate (rv, 4095);
148 bytes = read (fd, rv + pos, 4096);
153 return clib_error_return_unix (0, "read '%s'", file);
162 vec_validate (rv, pos + 4095);
169 void os_panic (void) __attribute__ ((weak));
177 void os_exit (int) __attribute__ ((weak));
185 void os_puts (u8 * string, uword string_length, uword is_error)
186 __attribute__ ((weak));
189 os_puts (u8 * string, uword string_length, uword is_error)
191 int cpu = os_get_cpu_number ();
192 int ncpus = os_get_ncpus ();
194 int fd = is_error ? 2 : 1;
195 struct iovec iovs[2];
200 snprintf (buf, sizeof (buf), "%d: ", cpu);
202 iovs[n_iovs].iov_base = buf;
203 iovs[n_iovs].iov_len = strlen (buf);
207 iovs[n_iovs].iov_base = string;
208 iovs[n_iovs].iov_len = string_length;
211 if (writev (fd, iovs, n_iovs) < 0)
215 void os_out_of_memory (void) __attribute__ ((weak));
217 os_out_of_memory (void)
222 uword os_get_cpu_number (void) __attribute__ ((weak));
224 os_get_cpu_number (void)
229 uword os_get_ncpus (void) __attribute__ ((weak));
237 * fd.io coding-style-patch-verification: ON
240 * eval: (c-set-style "gnu")