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Diffstat (limited to 'ps.c')
| -rw-r--r-- | ps.c | 68 |
1 files changed, 68 insertions, 0 deletions
@@ -0,0 +1,68 @@ +/* + * Mini ps implementation for busybox + * + * Copyright (C) 1998 by Erik Andersen <andersee@debian.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include "internal.h" +#include <unistd.h> +#include <dirent.h> +#include <stdio.h> + + +extern int ps_main(int argc, char **argv) +{ + DIR *dir; + FILE *file; + struct dirent *entry; + + if ( argc>1 && **(argv+1) == '-' ) { + usage ("ps\n"); + } + + dir = opendir("/proc"); + if (!dir) { + perror("Can't open /proc"); + exit(FALSE); + } + + fprintf(stdout, "PID\tUid\tGid\tState\tName\n"); + while ((entry = readdir(dir)) != NULL) { + char psStatus[NAME_MAX]; + char psName[NAME_MAX]=""; + char psState[NAME_MAX]=""; + int psPID=0, psPPID=0, psUid=0, psGid=0; + //if (match(entry->d_name, "[0-9]") == FALSE) + // continue; + sprintf(psStatus, "/proc/%s/status", entry->d_name); + file = fopen( psStatus, "r"); + if (file == NULL) { + continue; + //perror(psStatus); + //exit( FALSE); + } + fscanf(file, "Name:\t%s\nState:\t%s\nPid:\t%d\nPPid:\t%d\nUid:\t%d\nGid:\t%d", + psName, psState, &psPID, &psPPID, &psUid, &psGid); + fclose(file); + + fprintf(stdout, "%d\t%d\t%d\t%s\t%s\n", psPID, psUid, psGid, psState, psName); + } + closedir(dir); + exit(TRUE); +} + |