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
|
/* vi: set sw=4 ts=4: */
/*
* Mini ps implementation(s) for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under the GPL v2, see the file LICENSE in this tarball.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <string.h>
#include <termios.h>
#include <sys/ioctl.h>
#include "busybox.h"
#if ENABLE_SELINUX
#include <selinux/selinux.h> /* for is_selinux_enabled() */
#endif
extern int ps_main(int argc, char **argv)
{
procps_status_t * p;
int i, len;
#if ENABLE_SELINUX
int use_selinux = 0;
security_context_t sid=NULL;
#endif
#if ENABLE_FEATURE_PS_WIDE
int terminal_width;
int w_count = 0;
bb_opt_complementally="-:ww";
#else
# define terminal_width 79
#endif
#if ENABLE_FEATURE_PS_WIDE || ENABLE_SELINUX
/* handle arguments */
#if ENABLE_FEATURE_PS_WIDE && ENABLE_SELINUX
i = bb_getopt_ulflags(argc, argv, "wc", &w_count);
#elif ENABLE_FEATURE_PS_WIDE && !ENABLE_SELINUX
bb_getopt_ulflags(argc, argv, "w", &w_count);
#else /* !ENABLE_FEATURE_PS_WIDE && ENABLE_SELINUX */
i = bb_getopt_ulflags(argc, argv, "c");
#endif
#if ENABLE_FEATURE_PS_WIDE
/* if w is given once, GNU ps sets the width to 132,
* if w is given more than once, it is "unlimited"
*/
if(w_count) {
terminal_width = (w_count==1) ? 132 : INT_MAX;
} else {
get_terminal_width_height(1, &terminal_width, NULL);
/* Go one less... */
terminal_width--;
}
#endif
#if ENABLE_SELINUX
if ((i & (1+ENABLE_FEATURE_PS_WIDE)) && is_selinux_enabled())
use_selinux = 1;
#endif
#endif /* ENABLE_FEATURE_PS_WIDE || ENABLE_SELINUX */
#if ENABLE_SELINUX
if (use_selinux)
printf(" PID Context Stat Command\n");
else
#endif
printf(" PID Uid VmSize Stat Command\n");
while ((p = procps_scan(1)) != 0) {
char *namecmd = p->cmd;
#if ENABLE_SELINUX
if (use_selinux)
{
char sbuf[128];
len = sizeof(sbuf);
if (is_selinux_enabled()) {
if (getpidcon(p->pid,&sid)<0)
sid=NULL;
}
if (sid) {
/* I assume sid initilized with NULL */
len = strlen(sid)+1;
safe_strncpy(sbuf, sid, len);
freecon(sid);
sid=NULL;
}else {
safe_strncpy(sbuf, "unknown",7);
}
len = printf("%5d %-32s %s ", p->pid, sbuf, p->state);
}
else
#endif
if(p->rss == 0)
len = printf("%5d %-8s %s ", p->pid, p->user, p->state);
else
len = printf("%5d %-8s %6ld %s ", p->pid, p->user, p->rss, p->state);
i = terminal_width-len;
if(namecmd && namecmd[0]) {
if(i < 0)
i = 0;
if(strlen(namecmd) > (size_t)i)
namecmd[i] = 0;
printf("%s\n", namecmd);
} else {
namecmd = p->short_cmd;
if(i < 2)
i = 2;
if(strlen(namecmd) > ((size_t)i-2))
namecmd[i-2] = 0;
printf("[%s]\n", namecmd);
}
/* no check needed, but to make valgrind happy.. */
if (ENABLE_FEATURE_CLEAN_UP && p->cmd)
free(p->cmd);
}
return EXIT_SUCCESS;
}
|
