+/* vi: set sw=4 ts=4: */
/*
- * Mini ps implementation for busybox
+ * Mini ps implementation(s) 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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
+ * Licensed under the GPL v2, see the file LICENSE in this tarball.
*/
-#include "internal.h"
+#include "busybox.h"
+#include <stdio.h>
+#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
-#include <stdio.h>
-
+#include <errno.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <string.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#if ENABLE_SELINUX
+#include <selinux/selinux.h> /* for is_selinux_enabled() */
+#endif
-extern int ps_main(int argc, char **argv)
+int ps_main(int argc, char **argv)
{
- DIR *dir;
- FILE *file;
- struct dirent *entry;
+ 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;
- if ( argc>1 && **(argv+1) == '-' ) {
- usage ("ps\n");
- }
-
- dir = opendir("/proc");
- if (!dir) {
- perror("Can't open /proc");
- exit(FALSE);
- }
+ bb_opt_complementally="-:ww";
+#else
+# define terminal_width 79
+#endif
- 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);
+#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--;
}
- 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);
+#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 */
- fprintf(stdout, "%d\t%d\t%d\t%s\t%s\n", psPID, psUid, psGid, psState, psName);
- }
- closedir(dir);
- exit(TRUE);
-}
+#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;
+}
projects / oweals / busybox.git / blobdiff