1 /*
2 * Copyright (c) 2021, The OpenThread Authors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the copyright holder nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /**
30 * @file
31 * The file implements POSIX system utilities.
32 */
33
34 #include "utils.hpp"
35
36 #include <errno.h>
37 #include <stdio.h>
38 #include <string.h>
39
40 #include <openthread/logging.h>
41
42 #include "common/code_utils.hpp"
43
44 namespace ot {
45 namespace Posix {
46
47 enum
48 {
49 kSystemCommandMaxLength = 1024, ///< Max length of a system call command.
50 kOutputBufferSize = 1024, ///< Buffer size of command output.
51 };
52
ExecuteCommand(const char * aFormat,...)53 otError ExecuteCommand(const char *aFormat, ...)
54 {
55 char cmd[kSystemCommandMaxLength];
56 char buf[kOutputBufferSize];
57 va_list args;
58 FILE *file;
59 int exitCode;
60 otError error = OT_ERROR_NONE;
61
62 va_start(args, aFormat);
63 vsnprintf(cmd, sizeof(cmd), aFormat, args);
64 va_end(args);
65
66 file = popen(cmd, "r");
67 VerifyOrExit(file != nullptr, error = OT_ERROR_FAILED);
68 while (fgets(buf, sizeof(buf), file))
69 {
70 size_t length = strlen(buf);
71 if (buf[length] == '\n')
72 {
73 buf[length] = '\0';
74 }
75 otLogInfoPlat("%s", buf);
76 }
77 exitCode = pclose(file);
78 otLogInfoPlat("Execute command `%s` = %d", cmd, exitCode);
79 VerifyOrExit(exitCode == 0, error = OT_ERROR_FAILED);
80 exit:
81 if (error != OT_ERROR_NONE && errno != 0)
82 {
83 otLogInfoPlat("Got an error when executing command `%s`: `%s`", cmd, strerror(errno));
84 }
85 return error;
86 }
87
88 } // namespace Posix
89 } // namespace ot
90
