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Wrote killall.

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Adjusted mount, ps, utility.c, etc to handle my nifty new kernel
patches the allow busybox to run perfectly without /proc.
 -Erik
This commit is contained in:
Erik Andersen
2000-03-07 07:41:42 +00:00
parent e916d24805
commit 246cc6dddd
19 changed files with 603 additions and 144 deletions
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150
procps/ps.c
View File

@@ -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 @@ extern int ps_main(int argc, char **argv)
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 @@ extern int ps_main(int argc, char **argv)
/* 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 @@ extern int ps_main(int argc, char **argv)
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 @@ extern int ps_main(int argc, char **argv)
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 */