| /* vi: set sw=4 ts=4: */ |
| /* |
| * Utility routines. |
| * |
| * Copyright 1998 by Albert Cahalan; all rights reserved. |
| * Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru> |
| * GNU Library General Public License Version 2, or any later version |
| * |
| */ |
| |
| #if ! defined CONFIG_FEATURE_USE_DEVPS_PATCH |
| #include <dirent.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <asm/page.h> |
| |
| #include "libbb.h" |
| |
| extern procps_status_t * procps_scan(int save_user_arg0) |
| { |
| static DIR *dir; |
| struct dirent *entry; |
| static procps_status_t ret_status; |
| char *name; |
| int n; |
| char status[32]; |
| char buf[1024]; |
| FILE *fp; |
| procps_status_t curstatus; |
| int pid; |
| long tasknice; |
| struct stat sb; |
| |
| if (!dir) { |
| dir = opendir("/proc"); |
| if(!dir) |
| error_msg_and_die("Can't open /proc"); |
| } |
| for(;;) { |
| if((entry = readdir(dir)) == NULL) { |
| closedir(dir); |
| dir = 0; |
| return 0; |
| } |
| name = entry->d_name; |
| if (!(*name >= '0' && *name <= '9')) |
| continue; |
| |
| memset(&curstatus, 0, sizeof(procps_status_t)); |
| pid = atoi(name); |
| curstatus.pid = pid; |
| |
| sprintf(status, "/proc/%d/stat", pid); |
| if((fp = fopen(status, "r")) == NULL) |
| continue; |
| if(fstat(fileno(fp), &sb)) |
| continue; |
| my_getpwuid(curstatus.user, sb.st_uid); |
| name = fgets(buf, sizeof(buf), fp); |
| fclose(fp); |
| if(name == NULL) |
| continue; |
| name = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */ |
| if(name == 0 || name[1] != ' ') |
| continue; |
| *name = 0; |
| sscanf(buf, "%*s (%15c", curstatus.short_cmd); |
| n = sscanf(name+2, |
| "%c %d " |
| "%*s %*s %*s %*s " /* pgrp, session, tty, tpgid */ |
| "%*s %*s %*s %*s %*s " /* flags, min_flt, cmin_flt, maj_flt, cmaj_flt */ |
| #ifdef FEATURE_CPU_USAGE_PERCENTAGE |
| "%lu %lu " |
| #else |
| "%*s %*s " |
| #endif |
| "%*s %*s %*s " /* cutime, cstime, priority */ |
| "%ld " |
| "%*s %*s %*s " /* timeout, it_real_value, start_time */ |
| "%*s " /* vsize */ |
| "%ld", |
| curstatus.state, &curstatus.ppid, |
| #ifdef FEATURE_CPU_USAGE_PERCENTAGE |
| &curstatus.utime, &curstatus.stime, |
| #endif |
| &tasknice, |
| &curstatus.rss); |
| #ifdef FEATURE_CPU_USAGE_PERCENTAGE |
| if(n != 6) |
| #else |
| if(n != 4) |
| #endif |
| continue; |
| |
| if (curstatus.rss == 0 && curstatus.state[0] != 'Z') |
| curstatus.state[1] = 'W'; |
| else |
| curstatus.state[1] = ' '; |
| if (tasknice < 0) |
| curstatus.state[2] = '<'; |
| else if (tasknice > 0) |
| curstatus.state[2] = 'N'; |
| else |
| curstatus.state[2] = ' '; |
| |
| curstatus.rss <<= (PAGE_SHIFT - 10); /* 2**10 = 1kb */ |
| |
| sprintf(status, "/proc/%d/cmdline", pid); |
| if(save_user_arg0) { |
| if((fp = fopen(status, "r")) == NULL) |
| continue; |
| if(fgets(buf, sizeof(buf), fp) != NULL) { |
| name = strchr(buf, '\n'); |
| if(name != NULL) |
| *name = 0; |
| if(buf[0]) |
| curstatus.cmd = strdup(buf); |
| /* if NULL it work true also */ |
| } |
| fclose(fp); |
| } |
| return memcpy(&ret_status, &curstatus, sizeof(procps_status_t)); |
| } |
| } |
| |
| #endif /* CONFIG_FEATURE_USE_DEVPS_PATCH. Else this file is empty */ |
| |
| /* END CODE */ |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |