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69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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* Mini ps implementation for busybox
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*
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* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "internal.h"
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#include <unistd.h>
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#include <dirent.h>
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#include <stdio.h>
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extern int ps_main(int argc, char **argv)
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{
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DIR *dir;
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FILE *file;
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struct dirent *entry;
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if ( argc>1 && **(argv+1) == '-' ) {
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usage ("ps\n");
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}
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dir = opendir("/proc");
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if (!dir) {
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perror("Can't open /proc");
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exit(FALSE);
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}
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fprintf(stdout, "PID\tUid\tGid\tState\tName\n");
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while ((entry = readdir(dir)) != NULL) {
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char psStatus[NAME_MAX];
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char psName[NAME_MAX]="";
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char psState[NAME_MAX]="";
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int psPID=0, psPPID=0, psUid=0, psGid=0;
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//if (match(entry->d_name, "[0-9]") == FALSE)
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// continue;
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sprintf(psStatus, "/proc/%s/status", entry->d_name);
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file = fopen( psStatus, "r");
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if (file == NULL) {
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continue;
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//perror(psStatus);
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//exit( FALSE);
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}
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fscanf(file, "Name:\t%s\nState:\t%s\nPid:\t%d\nPPid:\t%d\nUid:\t%d\nGid:\t%d",
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psName, psState, &psPID, &psPPID, &psUid, &psGid);
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fclose(file);
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fprintf(stdout, "%d\t%d\t%d\t%s\t%s\n", psPID, psUid, psGid, psState, psName);
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}
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closedir(dir);
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exit(TRUE);
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}
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