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>
41 #include <vppinfra/format.h>
44 #include <sys/types.h>
45 #include <sys/uio.h> /* writev */
47 #include <stdio.h> /* for sprintf */
50 __clib_export __thread uword __os_thread_index = 0;
51 __clib_export __thread uword __os_numa_index = 0;
54 clib_file_n_bytes (char *file, uword * result)
58 if (stat (file, &s) < 0)
59 return clib_error_return_unix (0, "stat `%s'", file);
61 if (S_ISREG (s.st_mode))
66 return /* no error */ 0;
70 clib_file_read_contents (char *file, u8 * result, uword n_bytes)
74 clib_error_t *error = 0;
77 if ((fd = open (file, 0)) < 0)
78 return clib_error_return_unix (0, "open `%s'", file);
85 if ((n_read = read (fd, v + n_done, n_left)) < 0)
87 error = clib_error_return_unix (0, "open `%s'", file);
102 clib_error_return (0,
103 " `%s' expected to read %wd bytes; read only %wd",
104 file, n_bytes, n_bytes - n_left);
113 __clib_export clib_error_t *
114 clib_file_contents (char *file, u8 ** result)
117 clib_error_t *error = 0;
120 if ((error = clib_file_n_bytes (file, &n_bytes)))
124 vec_resize (v, n_bytes);
126 error = clib_file_read_contents (file, v, n_bytes);
137 clib_file_get_resolved_basename (char *fmt, ...)
140 char *p, buffer[PATH_MAX];
145 link = va_format (0, fmt, &va);
149 r = readlink ((char *) link, buffer, sizeof (buffer) - 1);
156 while (p > buffer && p[-1] != '/')
160 vec_add1 (s, p++[0]);
166 unix_proc_file_contents (char *file, u8 ** result)
172 /* Unfortunately, stat(/proc/XXX) returns zero... */
173 fd = open (file, O_RDONLY);
176 return clib_error_return_unix (0, "open `%s'", file);
178 vec_validate (rv, 4095);
182 bytes = read (fd, rv + pos, 4096);
187 return clib_error_return_unix (0, "read '%s'", file);
192 vec_set_len (rv, pos);
196 vec_validate (rv, pos + 4095);
203 void os_panic (void) __attribute__ ((weak));
211 void os_exit (int) __attribute__ ((weak));
219 void os_puts (u8 * string, uword string_length, uword is_error)
220 __attribute__ ((weak));
223 os_puts (u8 * string, uword string_length, uword is_error)
225 int cpu = os_get_thread_index ();
226 int nthreads = os_get_nthreads ();
228 int fd = is_error ? 2 : 1;
229 struct iovec iovs[2];
234 snprintf (buf, sizeof (buf), "%d: ", cpu);
236 iovs[n_iovs].iov_base = buf;
237 iovs[n_iovs].iov_len = strlen (buf);
241 iovs[n_iovs].iov_base = string;
242 iovs[n_iovs].iov_len = string_length;
245 if (writev (fd, iovs, n_iovs) < 0)
249 __clib_export __clib_weak void
250 os_out_of_memory (void)
255 __clib_export __clib_weak uword
256 os_get_nthreads (void)
262 * fd.io coding-style-patch-verification: ON
265 * eval: (c-set-style "gnu")