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Kill CONFIG_FEATURE_USE_DEVPS_PATCH and the devps patch. I'm not
maintaining it anymore, and it is now terribly out of date. -Erik
This commit is contained in:
parent
6f9b45b9ef
commit
deca106b6d
@ -1,104 +0,0 @@
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I have been asked several times whether the devps patch will go into the
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mainline Linux kernel. The following emails from Alan Cox and Linus Torvalds
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make it clear that it is not going to happen. This does not mean this patch
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had no value -- it does. It just means that those that like it get to apply it
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themselves...
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-Erik
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-------------------------------
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From alan@lxorguk.ukuu.org.uk Thu Apr 13 08:07:22 2000
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Return-Path: <alan@lxorguk.ukuu.org.uk>
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Delivered-To: andersen@dillweed.dsl.xmission.com
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for <andersen@dillweed.dsl.xmission.com>; Thu, 13 Apr 2000 08:07:22 -0600 (MDT)
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for andersen@xmission.com; Thu, 13 Apr 2000 12:04:25 +0100
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Subject: Re: kernel ps drivers [Was: vm locking question]
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To: andersen@xmission.com
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Date: Thu, 13 Apr 2000 12:04:23 +0100 (BST)
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In-Reply-To: <20000412224130.A2748@xmission.com> from "Erik Andersen" at Apr 12, 2000 10:41:30 PM
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X-Mailer: ELM [version 2.5 PL1]
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MIME-Version: 1.0
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Content-Type: text/plain; charset=us-ascii
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Content-Transfer-Encoding: 7bit
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Message-Id: <E12fhQ9-0002nD-00@the-village.bc.nu>
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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Status: RO
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X-Status: A
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Content-Length: 242
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Lines: 6
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> On the subject of ps, would you be willing to accept my /dev/ps
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> patch into the kernel? If no, any suggestions on what should
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> be done differently (if anything) to make it worthy of inclusion?
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For 2.2.x no, for 2.3.x ask Linus not me
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From torvalds@transmeta.com Thu Apr 13 09:18:16 2000
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Return-Path: <torvalds@transmeta.com>
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X-Authentication-Warning: penguin.transmeta.com: torvalds owned process doing -bs
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Date: Thu, 13 Apr 2000 08:13:53 -0700 (PDT)
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From: Linus Torvalds <torvalds@transmeta.com>
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To: Erik Andersen <andersen@xmission.com>
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Cc: Alan Cox <alan@redhat.com>
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Subject: Re: kernel ps drivers [Was: vm locking question]
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In-Reply-To: <20000413083127.A976@xmission.com>
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Message-ID: <Pine.LNX.4.10.10004130812170.2000-100000@penguin.transmeta.com>
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Content-Length: 659
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Lines: 16
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On Thu, 13 Apr 2000, Erik Andersen wrote:
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>
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> For 2.3.x would you be willing to accept my /dev/ps driver into the kernel?
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> (Assuming I remove the /dev/modules driver (since it was pointed out that there
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> is a perfectly good syscall providing that interface). If no, is there anything
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> that could be done differently (if anything) to make it worthy of inclusion?
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I do dislike /dev/ps mightily. If the problem is that /proc is too large,
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then the right solution is to just clean up /proc. Which is getting done.
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And yes, /proc will be larger than /dev/ps, but I still find that
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preferable to having two incompatible ways to do the same thing.
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Linus
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File diff suppressed because it is too large
Load Diff
@ -27,88 +27,6 @@
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#define READ_BUF_SIZE 50
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/* For Erik's nifty devps device driver */
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#ifdef CONFIG_FEATURE_USE_DEVPS_PATCH
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#include <linux/devps.h>
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/* find_pid_by_name()
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*
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* This finds the pid of the specified process,
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* by using the /dev/ps device driver.
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*
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* Returns a list of all matching PIDs
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*/
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extern long* find_pid_by_name( const char* pidName)
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{
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int fd, i, j;
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char device[] = "/dev/ps";
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pid_t num_pids;
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pid_t* pid_array = NULL;
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long* pidList=NULL;
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/* open device */
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fd = open(device, O_RDONLY);
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if (fd < 0)
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perror_msg_and_die("open failed for `%s'", device);
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/* Find out how many processes there are */
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if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0)
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perror_msg_and_die("\nDEVPS_GET_PID_LIST");
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/* Allocate some memory -- grab a few extras just in case
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* some new processes start up while we wait. The kernel will
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* just ignore any extras if we give it too many, and will trunc.
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* the list if we give it too few. */
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pid_array = (pid_t*) xcalloc( num_pids+10, sizeof(pid_t));
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pid_array[0] = num_pids+10;
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/* Now grab the pid list */
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if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0)
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perror_msg_and_die("\nDEVPS_GET_PID_LIST");
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/* Now search for a match */
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for (i=1, j=0; i<pid_array[0] ; i++) {
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char* p;
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struct pid_info info;
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info.pid = pid_array[i];
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if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
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perror_msg_and_die("\nDEVPS_GET_PID_INFO");
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/* Make sure we only match on the process name */
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p=info.command_line+1;
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while ((*p != 0) && !isspace(*(p)) && (*(p-1) != '\\')) {
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(p)++;
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}
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if (isspace(*(p)))
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*p='\0';
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if ((strstr(info.command_line, pidName) != NULL)
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&& (strlen(pidName) == strlen(info.command_line))) {
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pidList=xrealloc( pidList, sizeof(long) * (j+2));
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pidList[j++]=info.pid;
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}
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}
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if (pidList) {
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pidList[j]=0;
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} else {
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pidList=xrealloc( pidList, sizeof(long));
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pidList[0]=-1;
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}
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/* Free memory */
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free( pid_array);
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/* close device */
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if (close (fd) != 0)
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perror_msg_and_die("close failed for `%s'", device);
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return pidList;
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}
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#else /* CONFIG_FEATURE_USE_DEVPS_PATCH */
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/* find_pid_by_name()
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*
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* Modified by Vladimir Oleynik for use with libbb/procps.c
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@ -135,7 +53,6 @@ extern long* find_pid_by_name( const char* pidName)
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pidList[i] = i==0 ? -1 : 0;
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return pidList;
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}
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#endif /* CONFIG_FEATURE_USE_DEVPS_PATCH */
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/* END CODE */
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/*
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@ -23,16 +23,12 @@
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#include "libbb.h"
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/* Busybox mount uses either /proc/mounts or /dev/mtab to
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/* Busybox mount uses either /proc/mounts or /etc/mtab to
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* get the list of currently mounted filesystems */
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#if defined CONFIG_FEATURE_MTAB_SUPPORT
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const char mtab_file[] = "/etc/mtab";
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#else
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# if defined CONFIG_FEATURE_USE_DEVPS_PATCH
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const char mtab_file[] = "/dev/mtab";
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# else
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const char mtab_file[] = "/proc/mounts";
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# endif
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const char mtab_file[] = "/proc/mounts";
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#endif
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@ -8,7 +8,6 @@
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*
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*/
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#if ! defined CONFIG_FEATURE_USE_DEVPS_PATCH
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#include <dirent.h>
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#include <string.h>
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#include <stdlib.h>
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@ -131,8 +130,6 @@ extern procps_status_t * procps_scan(int save_user_arg0)
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}
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}
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#endif /* CONFIG_FEATURE_USE_DEVPS_PATCH. Else this file is empty */
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/* END CODE */
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/*
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Local Variables:
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104
procps/ps.c
104
procps/ps.c
@ -20,12 +20,6 @@
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* This contains _two_ implementations of ps for Linux. One uses the
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* traditional /proc virtual filesystem, and the other use the devps kernel
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* driver (written by Erik Andersen to avoid using /proc thereby saving 100k+).
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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@ -42,8 +36,6 @@ static const int TERMINAL_WIDTH = 79; /* not 80 in case terminal has linefo
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#if ! defined CONFIG_FEATURE_USE_DEVPS_PATCH
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extern int ps_main(int argc, char **argv)
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{
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procps_status_t * p;
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@ -91,99 +83,3 @@ extern int ps_main(int argc, char **argv)
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return EXIT_SUCCESS;
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}
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#else /* CONFIG_FEATURE_USE_DEVPS_PATCH */
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/* The following is the second ps implementation --
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* this one uses the nifty new devps kernel device.
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*/
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#include <linux/devps.h> /* For Erik's nifty devps device driver */
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extern int ps_main(int argc, char **argv)
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{
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char device[] = "/dev/ps";
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int i, j, len, fd;
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pid_t num_pids;
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pid_t* pid_array = NULL;
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struct pid_info info;
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char uidName[9];
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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struct winsize win = { 0, 0, 0, 0 };
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int terminal_width = TERMINAL_WIDTH;
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#else
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#define terminal_width TERMINAL_WIDTH
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#endif
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if (argc > 1 && **(argv + 1) == '-')
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show_usage();
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/* open device */
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fd = open(device, O_RDONLY);
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if (fd < 0)
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perror_msg_and_die( "open failed for `%s'", device);
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/* Find out how many processes there are */
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if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0)
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perror_msg_and_die( "\nDEVPS_GET_PID_LIST");
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/* Allocate some memory -- grab a few extras just in case
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* some new processes start up while we wait. The kernel will
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* just ignore any extras if we give it too many, and will trunc.
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* the list if we give it too few. */
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pid_array = (pid_t*) xcalloc( num_pids+10, sizeof(pid_t));
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pid_array[0] = num_pids+10;
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/* Now grab the pid list */
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if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0)
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perror_msg_and_die("\nDEVPS_GET_PID_LIST");
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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ioctl(fileno(stdout), TIOCGWINSZ, &win);
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if (win.ws_col > 0)
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terminal_width = win.ws_col - 1;
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#endif
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/* Print up a ps listing */
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printf(" PID Uid Stat Command\n");
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for (i=1; i<pid_array[0] ; i++) {
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info.pid = pid_array[i];
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if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
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perror_msg_and_die("\nDEVPS_GET_PID_INFO");
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/* Make some adjustments as needed */
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my_getpwuid(uidName, info.euid);
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if(p.vmsize == 0)
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len = printf("%5d %-8s %c ", p.pid, uidName, p.state);
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else
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len = printf("%5d %-8s %6d %c ", p.pid, uidName, p.vmsize, p.state);
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if (strlen(info.command_line) > 1) {
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for( j=0; j<(sizeof(info.command_line)-1) && j < (terminal_width-len); j++) {
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if (*(info.command_line+j) == '\0' && *(info.command_line+j+1) != '\0') {
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*(info.command_line+j) = ' ';
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}
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}
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*(info.command_line+j) = '\0';
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puts(info.command_line);
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} else {
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printf("[%s]\n", info.name);
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}
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}
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/* Free memory */
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free( pid_array);
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/* close device */
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if (close (fd) != 0)
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perror_msg_and_die("close failed for `%s'", device);
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exit (0);
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}
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#endif /* CONFIG_FEATURE_USE_DEVPS_PATCH */
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@ -53,9 +53,6 @@
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#include <mntent.h>
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#include <ctype.h>
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#include "busybox.h"
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#if defined CONFIG_FEATURE_USE_DEVPS_PATCH
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# include <linux/devmtab.h> /* For Erik's nifty devmtab device driver */
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#endif
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enum {
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MS_MGC_VAL = 0xc0ed0000, /* Magic number indicatng "new" flags */
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@ -247,39 +244,6 @@ static int mount_one(char *blockDevice, char *directory, char *filesystemType,
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int mount_all)
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{
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int status = 0;
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#if defined CONFIG_FEATURE_USE_DEVPS_PATCH
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if (strcmp(filesystemType, "auto") == 0) {
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static const char *noauto_array[] =
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{ "tmpfs", "shm", "proc", "ramfs", "devpts", "devfs", "usbdevfs",
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0 };
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const char **noauto_fstype;
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const int num_of_filesystems = sysfs(3, 0, 0);
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char buf[255];
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int i = 0;
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filesystemType = buf;
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while (i < num_of_filesystems) {
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sysfs(2, i++, filesystemType);
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for (noauto_fstype = noauto_array; *noauto_fstype;
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noauto_fstype++) {
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if (!strcmp(filesystemType, *noauto_fstype)) {
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break;
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}
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}
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if (!*noauto_fstype) {
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status =
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do_mount(blockDevice, directory, filesystemType,
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flags | MS_MGC_VAL, string_flags, useMtab,
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fakeIt, mtab_opts, mount_all);
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if (status) {
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break;
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}
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}
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}
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}
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#else
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if (strcmp(filesystemType, "auto") == 0) {
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char buf[255];
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FILE *f;
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@ -346,9 +310,7 @@ static int mount_one(char *blockDevice, char *directory, char *filesystemType,
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}
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}
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fclose(f);
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}
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#endif
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else {
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} else {
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status =
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do_mount(blockDevice, directory, filesystemType,
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flags | MS_MGC_VAL, string_flags, useMtab, fakeIt,
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@ -366,47 +328,6 @@ static int mount_one(char *blockDevice, char *directory, char *filesystemType,
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|
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static void show_mounts(char *onlytype)
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{
|
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#if defined CONFIG_FEATURE_USE_DEVPS_PATCH
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int fd, i, numfilesystems;
|
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char device[] = "/dev/mtab";
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struct k_mntent *mntentlist;
|
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|
||||
/* open device */
|
||||
fd = open(device, O_RDONLY);
|
||||
if (fd < 0) {
|
||||
perror_msg_and_die("open failed for `%s'", device);
|
||||
}
|
||||
|
||||
/* How many mounted filesystems? We need to know to
|
||||
* allocate enough space for later... */
|
||||
numfilesystems = ioctl(fd, DEVMTAB_COUNT_MOUNTS);
|
||||
if (numfilesystems < 0) {
|
||||
perror_msg_and_die("\nDEVMTAB_COUNT_MOUNTS");
|
||||
}
|
||||
mntentlist =
|
||||
(struct k_mntent *) xcalloc(numfilesystems, sizeof(struct k_mntent));
|
||||
|
||||
/* Grab the list of mounted filesystems */
|
||||
if (ioctl(fd, DEVMTAB_GET_MOUNTS, mntentlist) < 0) {
|
||||
perror_msg_and_die("\nDEVMTAB_GET_MOUNTS");
|
||||
}
|
||||
|
||||
for (i = 0; i < numfilesystems; i++) {
|
||||
if (!onlytype || (strcmp(mntentlist[i].mnt_type, onlytype) == 0)) {
|
||||
printf("%s %s %s %s %d %d\n", mntentlist[i].mnt_fsname,
|
||||
mntentlist[i].mnt_dir, mntentlist[i].mnt_type,
|
||||
mntentlist[i].mnt_opts, mntentlist[i].mnt_freq,
|
||||
mntentlist[i].mnt_passno);
|
||||
}
|
||||
}
|
||||
#ifdef CONFIG_FEATURE_CLEAN_UP
|
||||
/* Don't bother to close files or free memory. Exit
|
||||
* does that automagically, so we can save a few bytes */
|
||||
free(mntentlist);
|
||||
close(fd);
|
||||
#endif
|
||||
exit(EXIT_SUCCESS);
|
||||
#else
|
||||
FILE *mountTable = setmntent(mtab_file, "r");
|
||||
|
||||
if (mountTable) {
|
||||
@ -433,7 +354,6 @@ static void show_mounts(char *onlytype)
|
||||
perror_msg_and_die("%s", mtab_file);
|
||||
}
|
||||
exit(EXIT_SUCCESS);
|
||||
#endif
|
||||
}
|
||||
|
||||
extern int mount_main(int argc, char **argv)
|
||||
|
Loading…
Reference in New Issue
Block a user