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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* uname - print system information
*
* usage: uname [-amnrsv]
*
*/
#include <config.h>
#include <stdio.h>
#include "bashtypes.h"
#if defined (HAVE_UNAME)
# include <sys/utsname.h>
#else
struct utsname {
char sysname[32];
char nodename[32];
char release[32];
char version[32];
char machine[32];
};
#endif
#include <errno.h>
#include "builtins.h"
#include "shell.h"
#include "bashgetopt.h"
#define FLAG_SYSNAME 0x01 /* -s */
#define FLAG_NODENAME 0x02 /* -n */
#define FLAG_RELEASE 0x04 /* -r */
#define FLAG_VERSION 0x08 /* -v */
#define FLAG_MACHINE 0x10 /* -m, -p */
#define FLAG_ALL 0x1f
#ifndef errno
extern int errno;
#endif
static void uprint();
static int uname_flags;
uname_builtin (list)
WORD_LIST *list;
{
int opt, r;
struct utsname uninfo;
uname_flags = 0;
reset_internal_getopt ();
while ((opt = internal_getopt (list, "amnprsv")) != -1)
{
switch (opt)
{
case 'a':
uname_flags |= FLAG_ALL;
break;
case 'm':
case 'p':
uname_flags |= FLAG_MACHINE;
break;
case 'n':
uname_flags |= FLAG_NODENAME;
break;
case 'r':
uname_flags |= FLAG_RELEASE;
break;
case 's':
uname_flags |= FLAG_SYSNAME;
break;
case 'v':
uname_flags |= FLAG_VERSION;
break;
default:
builtin_usage ();
return (EX_USAGE);
}
}
list = loptend;
if (list)
{
builtin_usage ();
return (EX_USAGE);
}
if (uname_flags == 0)
uname_flags = FLAG_SYSNAME;
/* Only ancient systems will not have uname(2). */
#ifdef HAVE_UNAME
if (uname (&uninfo) < 0)
{
builtin_error ("cannot get system name: %s", strerror (errno));
return (EXECUTION_FAILURE);
}
#else
builtin_error ("cannot get system information: uname(2) not available");
return (EXECUTION_FAILURE);
#endif
uprint (FLAG_SYSNAME, uninfo.sysname);
uprint (FLAG_NODENAME, uninfo.nodename);
uprint (FLAG_RELEASE, uninfo.release);
uprint (FLAG_VERSION, uninfo.version);
uprint (FLAG_MACHINE, uninfo.machine);
return (EXECUTION_SUCCESS);
}
static void
uprint (flag, info)
int flag;
char *info;
{
if (uname_flags & flag)
{
uname_flags &= ~flag;
printf ("%s%c", info, uname_flags ? ' ' : '\n');
}
}
char *uname_doc[] = {
"display information about the system",
(char *)NULL
};
struct builtin uname_struct = {
"uname",
uname_builtin,
BUILTIN_ENABLED,
uname_doc,
"uname [-amnrsv]",
0
};
|
