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/* 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 version 2, see the file LICENSE in this tarball.
*/
#include "busybox.h"
int ps_main(int argc, char **argv)
{
procps_status_t * p;
int i, len;
SKIP_SELINUX(const) int use_selinux = 0;
USE_SELINUX(security_context_t sid = NULL;)
#if !ENABLE_FEATURE_PS_WIDE
enum { terminal_width = 79 };
#else
int terminal_width;
int w_count = 0;
#endif
#if ENABLE_FEATURE_PS_WIDE || ENABLE_SELINUX
#if ENABLE_FEATURE_PS_WIDE
opt_complementary = "-:ww";
USE_SELINUX(i =) getopt32(argc, argv, USE_SELINUX("c") "w", &w_count);
/* 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--;
}
#else /* only ENABLE_SELINUX */
i = getopt32(argc, argv, "c");
#endif
#if ENABLE_SELINUX
if ((i & 1) && is_selinux_enabled())
use_selinux = 1;
#endif
#endif /* ENABLE_FEATURE_PS_WIDE || ENABLE_SELINUX */
if (use_selinux)
puts(" PID Context Stat Command");
else
puts(" PID Uid VmSize Stat Command");
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 initialized with NULL */
len = strlen(sid)+1;
safe_strncpy(sbuf, sid, len);
freecon(sid);
sid = NULL;
} else {
safe_strncpy(sbuf, "unknown", 7);
}
len = printf("%5u %-32s %s ", (unsigned)p->pid, sbuf, p->state);
} else
#endif
if (p->rss == 0)
len = printf("%5u %-8s %s ", (unsigned)p->pid, p->user, p->state);
else
len = printf("%5u %-8s %6ld %s ", (unsigned)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;
puts(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;
}
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