1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2014 Inktank Storage, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "acconfig.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(__FreeBSD__)
#include <sys/wait.h>
#endif
/*
* TODO: Switch to libkmod when we abandon older platforms. The APIs
* we want are:
*
* - kmod_module_new_from_name() for obtaining handles;
* - kmod_module_probe_insert_module() for module_load();
* - kmod_module_get_info(), kmod_module_info_get_{key,value}() for
* module_has_param().
*/
/*
* Return command's exit status or -1 on error.
*/
static int run_command(const char *command)
{
int status;
status = system(command);
if (status >= 0 && WIFEXITED(status))
return WEXITSTATUS(status);
if (status < 0) {
char error_buf[80];
#ifdef STRERROR_R_CHAR_P
char* dummy = strerror_r(errno, error_buf, sizeof(error_buf));
(void)dummy;
#else
strerror_r(errno, error_buf, sizeof(error_buf));
#endif
fprintf(stderr, "couldn't run '%s': %s\n", command,
error_buf);
} else if (WIFSIGNALED(status)) {
fprintf(stderr, "'%s' killed by signal %d\n", command,
WTERMSIG(status));
} else {
fprintf(stderr, "weird status from '%s': %d\n", command,
status);
}
return -1;
}
int module_has_param(const char *module, const char *param)
{
char command[128];
snprintf(command, sizeof(command),
"/sbin/modinfo -F parm %s | /bin/grep -q ^%s:",
module, param);
return run_command(command) == 0;
}
int module_load(const char *module, const char *options)
{
char command[128];
snprintf(command, sizeof(command), "/sbin/modprobe %s %s",
module, (options ? options : ""));
return run_command(command);
}
|
