/* 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 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; }