Wrote killall.
Adjusted mount, ps, utility.c, etc to handle my nifty new kernel
patches the allow busybox to run perfectly without /proc.
-Erik
diff --git a/procps/ps.c b/procps/ps.c
index 207cdaa..b0933ab 100644
--- a/procps/ps.c
+++ b/procps/ps.c
@@ -1,34 +1,47 @@
/* vi: set sw=4 ts=4: */
/*
- * Mini ps implementation for busybox
+ * Mini ps implementation(s) for busybox
+ *
+ * Copyright (C) 1999 by Lineo, inc. Written by Erik Andersen
+ * <andersen@lineo.com>, <andersee@debian.org>
*
*
- * Copyright (C) 1999 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * This contains _two_ implementations of ps for Linux. One uses the
+ * traditional /proc virtual filesystem, and the other use the devps kernel
+ * driver (written by Erik Andersen to avoid using /proc thereby saving 100k+).
*
- * 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
+ * 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 <stdio.h>
#include <unistd.h>
#include <dirent.h>
-#include <stdio.h>
+#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
+#if ! defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
+
+/* The following is the first ps implementation --
+ * the one using the /proc virtual filesystem.
+ */
+
#if ! defined BB_FEATURE_USE_PROCFS
#error Sorry, I depend on the /proc filesystem right now.
#endif
@@ -105,16 +118,12 @@
char groupName[10] = "";
int i, c;
- if (argc > 1 && **(argv + 1) == '-') {
- usage
- ("ps\n\nReport process status\n\nThis version of ps accepts no options.\n");
- }
+ if (argc > 1 && **(argv + 1) == '-')
+ usage ("ps\n\nReport process status\n\nThis version of ps accepts no options.\n");
dir = opendir("/proc");
- if (!dir) {
- perror("Can't open /proc");
- exit(FALSE);
- }
+ if (!dir)
+ fatalError("Can't open /proc");
fprintf(stdout, "%5s %-8s %-3s %5s %s\n", "PID", "Uid", "Gid",
"State", "Command");
@@ -131,9 +140,9 @@
/* Make some adjustments as needed */
my_getpwuid(uidName, p.ruid);
- my_getgrgid(groupName, p.rgid);
if (*uidName == '\0')
sprintf(uidName, "%d", p.ruid);
+ my_getgrgid(groupName, p.rgid);
if (*groupName == '\0')
sprintf(groupName, "%d", p.rgid);
@@ -141,10 +150,8 @@
p.state);
sprintf(path, "/proc/%s/cmdline", entry->d_name);
file = fopen(path, "r");
- if (file == NULL) {
- perror(path);
- exit(FALSE);
- }
+ if (file == NULL)
+ fatalError("Can't open %s: %s\n", path, strerror(errno));
i = 0;
while (((c = getc(file)) != EOF) && (i < 53)) {
i++;
@@ -159,3 +166,90 @@
closedir(dir);
exit(TRUE);
}
+
+
+#else /* BB_FEATURE_USE_DEVPS_N_DEVMTAB */
+
+
+/* The following is the second ps implementation --
+ * this one uses the nifty new devps kernel device.
+ */
+
+#include <sys/ioctl.h>
+#include <linux/devps.h>
+
+
+extern int ps_main(int argc, char **argv)
+{
+ char device[] = "/dev/ps";
+ int i, fd;
+ pid_t num_pids;
+ pid_t* pid_array = NULL;
+ struct pid_info info;
+ char uidName[10] = "";
+ char groupName[10] = "";
+
+ if (argc > 1 && **(argv + 1) == '-')
+ usage("ps-devps\n\nReport process status\n\nThis version of ps accepts no options.\n\n");
+
+ /* open device */
+ fd = open(device, O_RDONLY);
+ if (fd < 0)
+ fatalError( "open failed for `%s': %s\n", device, strerror (errno));
+
+ /* Find out how many processes there are */
+ if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0)
+ fatalError( "\nDEVPS_GET_PID_LIST: %s\n", strerror (errno));
+
+ /* Allocate some memory -- grab a few extras just in case
+ * some new processes start up while we wait. The kernel will
+ * just ignore any extras if we give it too many, and will trunc.
+ * the list if we give it too few. */
+ pid_array = (pid_t*) calloc( num_pids+10, sizeof(pid_t));
+ pid_array[0] = num_pids+10;
+
+ /* Now grab the pid list */
+ if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0)
+ fatalError("\nDEVPS_GET_PID_LIST: %s\n", strerror (errno));
+
+ /* Print up a ps listing */
+ fprintf(stdout, "%5s %-8s %-3s %5s %s\n", "PID", "Uid", "Gid",
+ "State", "Command");
+
+ for (i=1; i<pid_array[0] ; i++) {
+ uidName[0] = '\0';
+ groupName[0] = '\0';
+ info.pid = pid_array[i];
+
+ if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
+ fatalError("\nDEVPS_GET_PID_INFO: %s\n", strerror (errno));
+
+ /* Make some adjustments as needed */
+ my_getpwuid(uidName, info.euid);
+ if (*uidName == '\0')
+ sprintf(uidName, "%ld", info.euid);
+ my_getgrgid(groupName, info.egid);
+ if (*groupName == '\0')
+ sprintf(groupName, "%ld", info.egid);
+
+ fprintf(stdout, "%5d %-8s %-8s %c ", info.pid, uidName, groupName, info.state);
+
+ if (strlen(info.command_line) > 1)
+ fprintf(stdout, "%s\n", info.command_line);
+ else
+ fprintf(stdout, "[%s]\n", info.name);
+
+ }
+
+ /* Free memory */
+ free( pid_array);
+
+ /* close device */
+ if (close (fd) != 0)
+ fatalError("close failed for `%s': %s\n", device, strerror (errno));
+
+ exit (0);
+}
+
+#endif /* BB_FEATURE_USE_DEVPS_N_DEVMTAB */
+