1 /* vi: set sw=4 ts=4: */
5 * Copyright 1998 by Albert Cahalan; all rights reserved.
6 * Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru>
7 * GNU Library General Public License Version 2, or any later version
19 extern procps_status_t * procps_scan(int save_user_arg0
21 , int use_selinux , security_id_t *sid
27 static procps_status_t ret_status;
33 procps_status_t curstatus;
39 dir = opendir("/proc");
41 bb_error_msg_and_die("Can't open /proc");
44 if((entry = readdir(dir)) == NULL) {
50 if (!(*name >= '0' && *name <= '9'))
53 memset(&curstatus, 0, sizeof(procps_status_t));
57 sprintf(status, "/proc/%d", pid);
60 my_getpwuid(curstatus.user, sb.st_uid);
62 sprintf(status, "/proc/%d/stat", pid);
63 if((fp = fopen(status, "r")) == NULL)
68 if(fstat_secure(fileno(fp), &sb, sid))
73 name = fgets(buf, sizeof(buf), fp);
77 name = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */
78 if(name == 0 || name[1] != ' ')
81 sscanf(buf, "%*s (%15c", curstatus.short_cmd);
84 "%*s %*s %*s %*s " /* pgrp, session, tty, tpgid */
85 "%*s %*s %*s %*s %*s " /* flags, min_flt, cmin_flt, maj_flt, cmaj_flt */
86 #ifdef FEATURE_CPU_USAGE_PERCENTAGE
91 "%*s %*s %*s " /* cutime, cstime, priority */
93 "%*s %*s %*s " /* timeout, it_real_value, start_time */
96 curstatus.state, &curstatus.ppid,
97 #ifdef FEATURE_CPU_USAGE_PERCENTAGE
98 &curstatus.utime, &curstatus.stime,
102 #ifdef FEATURE_CPU_USAGE_PERCENTAGE
109 if (curstatus.rss == 0 && curstatus.state[0] != 'Z')
110 curstatus.state[1] = 'W';
112 curstatus.state[1] = ' ';
114 curstatus.state[2] = '<';
115 else if (tasknice > 0)
116 curstatus.state[2] = 'N';
118 curstatus.state[2] = ' ';
121 curstatus.rss <<= (PAGE_SHIFT - 10); /* 2**10 = 1kb */
123 curstatus.rss *= (getpagesize() >> 10); /* 2**10 = 1kb */
127 sprintf(status, "/proc/%d/cmdline", pid);
128 if((fp = fopen(status, "r")) == NULL)
130 if((n=fread(buf, 1, sizeof(buf)-1, fp)) > 0) {
135 if(((unsigned char)*name) < ' ')
142 curstatus.cmd = strdup(buf);
143 /* if NULL it work true also */
147 return memcpy(&ret_status, &curstatus, sizeof(procps_status_t));
154 c-file-style: "linux"