emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Wrote killall.

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Changelog
View File

@ -1,5 +1,5 @@
0.43
* Wrote basename, and uptime.
* Wrote basename, killall, and uptime.
* Added freeramdisk, which will free up all memory associated
with a ram disk. Contributed by Emanuele Caratti <wiz@iol.it>
and then adjusted a bit by me.
@ -35,8 +35,8 @@
- Fixes to the makefile for handling "strip"
* An initial telnet implementation was added by
Randolph Chung <tausq@debian.org>.
* Fixed a bug where "sed 's/foo/bar/g'" would go into an
infinite loop.
* Fixed a bug where "sed 's/foo/bar/g'" (i.e. a script w/o a "-e")
would go into an infinite loop.
-Erik Andersen

3
applets/busybox.c
View File

@ -139,6 +139,9 @@ static const struct Applet applets[] = {
#ifdef BB_KILL //bin
{"kill", kill_main},
#endif
#ifdef BB_KILLALL //usr/bin
{"killall", kill_main},
#endif
#ifdef BB_LENGTH //usr/bin
{"length", length_main},
#endif

3
busybox.c
View File

@ -139,6 +139,9 @@ static const struct Applet applets[] = {
#ifdef BB_KILL //bin
{"kill", kill_main},
#endif
#ifdef BB_KILLALL //usr/bin
{"killall", kill_main},
#endif
#ifdef BB_LENGTH //usr/bin
{"length", length_main},
#endif

12
busybox.def.h
View File

@ -39,6 +39,7 @@
// Don't turn BB_INSMOD on. It doesn't work.
//#define BB_INSMOD
#define BB_KILL
#define BB_KILLALL
#define BB_KLOGD
//#define BB_LENGTH
#define BB_LN
@ -106,8 +107,17 @@
// pretty/useful).
//
//
// Turn this on to use Erik's very cool devps, devmtab,
// etc. kernel drivers, thereby eliminating the need for
// the /proc filesystem and thereby saving lots and lots
// memory for more important things.
// You can't use this and USE_PROCFS at the same time...
//#define BB_FEATURE_USE_DEVPS_N_DEVMTAB
//
//
// enable features that use the /proc filesystem (apps that
// break without this will tell you on compile)...
// You can't use this and DEVPS_N_DEVMTAB at the same time...
#define BB_FEATURE_USE_PROCFS
//
// Use termios to manipulate the screen ('more' is prettier with this on)
@ -161,6 +171,6 @@
// just like an initrd does. Requires a kernel patch by Werner Almesberger.
// ftp://icaftp.epfl.ch/pub/people/almesber/misc/umount-root-*.tar.gz
#ifdef BB_MOUNT
#define BB_FEATURE_INIT_CHROOT
//#define BB_FEATURE_INIT_CHROOT
#endif
//

6
chmod_chown_chgrp.c
View File

@ -98,13 +98,11 @@ int chmod_chown_chgrp_main(int argc, char **argv)
char *p;
const char *appUsage;
whichApp =
(strcmp(*argv, "chown") == 0)?
whichApp = (strcmp(*argv, "chown") == 0)?
CHOWN_APP : (strcmp(*argv, "chmod") == 0)?
CHMOD_APP : CHGRP_APP;
appUsage =
(whichApp == CHOWN_APP)?
appUsage = (whichApp == CHOWN_APP)?
chown_usage : (whichApp == CHMOD_APP) ? chmod_usage : chgrp_usage;
if (argc < 2)

2
halt.c
View File

@ -27,5 +27,5 @@
extern int halt_main(int argc, char **argv)
{
/* don't assume init's pid == 1 */
exit(kill(findInitPid(), SIGUSR1));
exit(kill(findPidByName("init"), SIGUSR1));
}

2
init/halt.c
View File

@ -27,5 +27,5 @@
extern int halt_main(int argc, char **argv)
{
/* don't assume init's pid == 1 */
exit(kill(findInitPid(), SIGUSR1));
exit(kill(findPidByName("init"), SIGUSR1));
}

2
init/poweroff.c
View File

@ -27,5 +27,5 @@
extern int poweroff_main(int argc, char **argv)
{
/* don't assume init's pid == 1 */
exit(kill(findInitPid(), SIGUSR2));
exit(kill(findPidByName("init"), SIGUSR2));
}

2
init/reboot.c
View File

@ -27,7 +27,7 @@
extern int reboot_main(int argc, char **argv)
{
/* don't assume init's pid == 1 */
exit(kill(findInitPid(), SIGINT));
exit(kill(findPidByName("init"), SIGINT));
}
/*

2
internal.h
View File

@ -203,7 +203,7 @@ extern char *mtab_next(void **iter);
extern char *mtab_getinfo(const char *match, const char which);
extern int check_wildcard_match(const char* text, const char* pattern);
extern long getNum (const char *cp);
extern pid_t findInitPid();
extern pid_t findPidByName( char* pidName);
extern void *xmalloc (size_t size);
#if defined BB_INIT || defined BB_SYSLOGD
extern int device_open(char *device, int mode);

57
kill.c
View File

@ -24,6 +24,7 @@
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <ctype.h>
@ -35,6 +36,14 @@ static const char *kill_usage =
"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n" "\t-l\tList all signal names and numbers.\n\n";
static const char *killall_usage =
"killall [-signal] process-name [process-name ...]\n\n"
"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n" "\t-l\tList all signal names and numbers.\n\n";
#define KILL 0
#define KILLALL 1
struct signal_name {
const char *name;
@ -120,13 +129,19 @@ const struct signal_name signames[] = {
extern int kill_main(int argc, char **argv)
{
int sig = SIGTERM;
int whichApp, sig = SIGTERM;
const char *appUsage;
/* Figure out what we are trying to do here */
whichApp = (strcmp(*argv, "killall") == 0)?
KILLALL : KILL;
appUsage = (whichApp == KILLALL)? killall_usage : kill_usage;
argc--;
argv++;
/* Parse any options */
if (argc < 1)
usage(kill_usage);
usage(appUsage);
while (argc > 0 && **argv == '-') {
while (*++(*argv)) {
@ -150,7 +165,7 @@ extern int kill_main(int argc, char **argv)
}
break;
case '-':
usage(kill_usage);
usage(appUsage);
default:
{
if (isdigit(**argv)) {
@ -186,32 +201,34 @@ extern int kill_main(int argc, char **argv)
do_it_now:
if (whichApp == KILL) {
/* Looks like they want to do a kill. Do that */
while (--argc >= 0) {
int pid;
struct stat statbuf;
char pidpath[20] = "/proc/";
if (!isdigit(**argv)) {
fprintf(stderr, "bad PID: %s\n", *argv);
exit(FALSE);
if (!isdigit(**argv))
fatalError( "Bad PID: %s\n", strerror(errno));
pid = strtol(*argv, NULL, 0);
if (kill(pid, sig) != 0)
fatalError( "Could not kill pid '%d': %s\n", pid, strerror(errno));
argv++;
}
pid = atoi(*argv);
snprintf(pidpath, 20, "/proc/%s/stat", *argv);
if (stat(pidpath, &statbuf) != 0) {
fprintf(stderr, "kill: (%d) - No such pid\n", pid);
exit(FALSE);
}
fprintf(stderr, "sig = %d\n", sig);
if (kill(pid, sig) != 0) {
perror(*argv);
exit(FALSE);
} else {
/* Looks like they want to do a killall. Do that */
while (--argc >= 0) {
int pid;
while((pid = findPidByName( *argv))) {
if (kill(pid, sig) != 0)
fatalError( "Could not kill pid '%d': %s\n", pid, strerror(errno));
}
argv++;
}
}
exit(TRUE);
end:
fprintf(stderr, "bad signal name: %s\n", *argv);
exit(TRUE);
fatalError( "bad signal name: %s\n", *argv);
}

86
mount.c
View File

@ -46,6 +46,10 @@
#include <sys/mount.h>
#include <ctype.h>
#include <fstab.h>
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
#include <linux/devmtab.h>
#endif
#if defined BB_FEATURE_MOUNT_LOOP
#include <fcntl.h>
@ -221,9 +225,8 @@ mount_one(char *blockDevice, char *directory, char *filesystemType,
{
int status = 0;
char buf[255];
#if defined BB_FEATURE_USE_PROCFS
char buf[255];
if (strcmp(filesystemType, "auto") == 0) {
FILE *f = fopen("/proc/filesystems", "r");
@ -251,6 +254,43 @@ mount_one(char *blockDevice, char *directory, char *filesystemType,
}
fclose(f);
} else
#endif
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
if (strcmp(filesystemType, "auto") == 0) {
int fd, i, numfilesystems;
char device[] = "/dev/mtab";
struct k_fstype *fslist;
/* open device */
fd = open(device, O_RDONLY);
if (fd < 0)
fatalError("open failed for `%s': %s\n", device, strerror (errno));
/* How many filesystems? We need to know to allocate enough space */
numfilesystems = ioctl (fd, DEVMTAB_COUNT_FILESYSTEMS);
if (numfilesystems<0)
fatalError("\nDEVMTAB_COUNT_FILESYSTEMS: %s\n", strerror (errno));
fslist = (struct k_fstype *) calloc ( numfilesystems, sizeof(struct k_fstype));
/* Grab the list of available filesystems */
status = ioctl (fd, DEVMTAB_GET_FILESYSTEMS, fslist);
if (status<0)
fatalError("\nDEVMTAB_GET_FILESYSTEMS: %s\n", strerror (errno));
/* Walk the list trying to mount filesystems
* that do not claim to be nodev filesystems */
for( i = 0 ; i < numfilesystems ; i++) {
if (fslist[i].mnt_nodev)
continue;
status = do_mount(blockDevice, directory, fslist[i].mnt_type,
flags | MS_MGC_VAL, string_flags,
useMtab, fakeIt, mtab_opts);
if (status == TRUE)
break;
}
free( fslist);
close(fd);
} else
#endif
{
status = do_mount(blockDevice, directory, filesystemType,
@ -285,6 +325,39 @@ extern int mount_main(int argc, char **argv)
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
if (argc == 1) {
int fd, i, numfilesystems;
char device[] = "/dev/mtab";
struct k_mntent *mntentlist;
/* open device */
fd = open(device, O_RDONLY);
if (fd < 0)
fatalError("open failed for `%s': %s\n", device, strerror (errno));
/* How many mounted filesystems? We need to know to
* allocate enough space for later... */
numfilesystems = ioctl (fd, DEVMTAB_COUNT_MOUNTS);
if (numfilesystems<0)
fatalError( "\nDEVMTAB_COUNT_MOUNTS: %s\n", strerror (errno));
mntentlist = (struct k_mntent *) calloc ( numfilesystems, sizeof(struct k_mntent));
/* Grab the list of mounted filesystems */
if (ioctl (fd, DEVMTAB_GET_MOUNTS, mntentlist)<0)
fatalError( "\nDEVMTAB_GET_MOUNTS: %s\n", strerror (errno));
for( i = 0 ; i < numfilesystems ; i++) {
fprintf( stdout, "%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);
}
free( mntentlist);
close(fd);
exit(TRUE);
}
#else
if (argc == 1) {
FILE *mountTable = setmntent(mtab_file, "r");
@ -310,7 +383,7 @@ extern int mount_main(int argc, char **argv)
}
exit(TRUE);
}
#endif
/* Parse options */
i = --argc;
@ -372,10 +445,9 @@ extern int mount_main(int argc, char **argv)
struct mntent *m;
FILE *f = setmntent("/etc/fstab", "r");
if (f == NULL) {
perror("/etc/fstab");
exit(FALSE);
}
if (f == NULL)
fatalError( "\nCannot ream /etc/fstab: %s\n", strerror (errno));
while ((m = getmntent(f)) != NULL) {
// If the file system isn't noauto,
// and isn't swap or nfs, then mount it

2
poweroff.c
View File

@ -27,5 +27,5 @@
extern int poweroff_main(int argc, char **argv)
{
/* don't assume init's pid == 1 */
exit(kill(findInitPid(), SIGUSR2));
exit(kill(findPidByName("init"), SIGUSR2));
}

57
procps/kill.c
View File

@ -24,6 +24,7 @@
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <ctype.h>
@ -35,6 +36,14 @@ static const char *kill_usage =
"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n" "\t-l\tList all signal names and numbers.\n\n";
static const char *killall_usage =
"killall [-signal] process-name [process-name ...]\n\n"
"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n" "\t-l\tList all signal names and numbers.\n\n";
#define KILL 0
#define KILLALL 1
struct signal_name {
const char *name;
@ -120,13 +129,19 @@ const struct signal_name signames[] = {
extern int kill_main(int argc, char **argv)
{
int sig = SIGTERM;
int whichApp, sig = SIGTERM;
const char *appUsage;
/* Figure out what we are trying to do here */
whichApp = (strcmp(*argv, "killall") == 0)?
KILLALL : KILL;
appUsage = (whichApp == KILLALL)? killall_usage : kill_usage;
argc--;
argv++;
/* Parse any options */
if (argc < 1)
usage(kill_usage);
usage(appUsage);
while (argc > 0 && **argv == '-') {
while (*++(*argv)) {
@ -150,7 +165,7 @@ extern int kill_main(int argc, char **argv)
}
break;
case '-':
usage(kill_usage);
usage(appUsage);
default:
{
if (isdigit(**argv)) {
@ -186,32 +201,34 @@ extern int kill_main(int argc, char **argv)
do_it_now:
if (whichApp == KILL) {
/* Looks like they want to do a kill. Do that */
while (--argc >= 0) {
int pid;
struct stat statbuf;
char pidpath[20] = "/proc/";
if (!isdigit(**argv)) {
fprintf(stderr, "bad PID: %s\n", *argv);
exit(FALSE);
if (!isdigit(**argv))
fatalError( "Bad PID: %s\n", strerror(errno));
pid = strtol(*argv, NULL, 0);
if (kill(pid, sig) != 0)
fatalError( "Could not kill pid '%d': %s\n", pid, strerror(errno));
argv++;
}
pid = atoi(*argv);
snprintf(pidpath, 20, "/proc/%s/stat", *argv);
if (stat(pidpath, &statbuf) != 0) {
fprintf(stderr, "kill: (%d) - No such pid\n", pid);
exit(FALSE);
}
fprintf(stderr, "sig = %d\n", sig);
if (kill(pid, sig) != 0) {
perror(*argv);
exit(FALSE);
} else {
/* Looks like they want to do a killall. Do that */
while (--argc >= 0) {
int pid;
while((pid = findPidByName( *argv))) {
if (kill(pid, sig) != 0)
fatalError( "Could not kill pid '%d': %s\n", pid, strerror(errno));
}
argv++;
}
}
exit(TRUE);
end:
fprintf(stderr, "bad signal name: %s\n", *argv);
exit(TRUE);
fatalError( "bad signal name: %s\n", *argv);
}

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 */

150
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 */

2
reboot.c
View File

@ -27,7 +27,7 @@
extern int reboot_main(int argc, char **argv)
{
/* don't assume init's pid == 1 */
exit(kill(findInitPid(), SIGINT));
exit(kill(findPidByName("init"), SIGINT));
}
/*

86
util-linux/mount.c
View File

@ -46,6 +46,10 @@
#include <sys/mount.h>
#include <ctype.h>
#include <fstab.h>
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
#include <linux/devmtab.h>
#endif
#if defined BB_FEATURE_MOUNT_LOOP
#include <fcntl.h>
@ -221,9 +225,8 @@ mount_one(char *blockDevice, char *directory, char *filesystemType,
{
int status = 0;
char buf[255];
#if defined BB_FEATURE_USE_PROCFS
char buf[255];
if (strcmp(filesystemType, "auto") == 0) {
FILE *f = fopen("/proc/filesystems", "r");
@ -251,6 +254,43 @@ mount_one(char *blockDevice, char *directory, char *filesystemType,
}
fclose(f);
} else
#endif
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
if (strcmp(filesystemType, "auto") == 0) {
int fd, i, numfilesystems;
char device[] = "/dev/mtab";
struct k_fstype *fslist;
/* open device */
fd = open(device, O_RDONLY);
if (fd < 0)
fatalError("open failed for `%s': %s\n", device, strerror (errno));
/* How many filesystems? We need to know to allocate enough space */
numfilesystems = ioctl (fd, DEVMTAB_COUNT_FILESYSTEMS);
if (numfilesystems<0)
fatalError("\nDEVMTAB_COUNT_FILESYSTEMS: %s\n", strerror (errno));
fslist = (struct k_fstype *) calloc ( numfilesystems, sizeof(struct k_fstype));
/* Grab the list of available filesystems */
status = ioctl (fd, DEVMTAB_GET_FILESYSTEMS, fslist);
if (status<0)
fatalError("\nDEVMTAB_GET_FILESYSTEMS: %s\n", strerror (errno));
/* Walk the list trying to mount filesystems
* that do not claim to be nodev filesystems */
for( i = 0 ; i < numfilesystems ; i++) {
if (fslist[i].mnt_nodev)
continue;
status = do_mount(blockDevice, directory, fslist[i].mnt_type,
flags | MS_MGC_VAL, string_flags,
useMtab, fakeIt, mtab_opts);
if (status == TRUE)
break;
}
free( fslist);
close(fd);
} else
#endif
{
status = do_mount(blockDevice, directory, filesystemType,
@ -285,6 +325,39 @@ extern int mount_main(int argc, char **argv)
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
if (argc == 1) {
int fd, i, numfilesystems;
char device[] = "/dev/mtab";
struct k_mntent *mntentlist;
/* open device */
fd = open(device, O_RDONLY);
if (fd < 0)
fatalError("open failed for `%s': %s\n", device, strerror (errno));
/* How many mounted filesystems? We need to know to
* allocate enough space for later... */
numfilesystems = ioctl (fd, DEVMTAB_COUNT_MOUNTS);
if (numfilesystems<0)
fatalError( "\nDEVMTAB_COUNT_MOUNTS: %s\n", strerror (errno));
mntentlist = (struct k_mntent *) calloc ( numfilesystems, sizeof(struct k_mntent));
/* Grab the list of mounted filesystems */
if (ioctl (fd, DEVMTAB_GET_MOUNTS, mntentlist)<0)
fatalError( "\nDEVMTAB_GET_MOUNTS: %s\n", strerror (errno));
for( i = 0 ; i < numfilesystems ; i++) {
fprintf( stdout, "%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);
}
free( mntentlist);
close(fd);
exit(TRUE);
}
#else
if (argc == 1) {
FILE *mountTable = setmntent(mtab_file, "r");
@ -310,7 +383,7 @@ extern int mount_main(int argc, char **argv)
}
exit(TRUE);
}
#endif
/* Parse options */
i = --argc;
@ -372,10 +445,9 @@ extern int mount_main(int argc, char **argv)
struct mntent *m;
FILE *f = setmntent("/etc/fstab", "r");
if (f == NULL) {
perror("/etc/fstab");
exit(FALSE);
}
if (f == NULL)
fatalError( "\nCannot ream /etc/fstab: %s\n", strerror (errno));
while ((m = getmntent(f)) != NULL) {
// If the file system isn't noauto,
// and isn't swap or nfs, then mount it

105
utility.c
View File

@ -56,6 +56,13 @@
#include <linux/loop.h>
#endif
/* Busybox mount uses either /proc/filesystems or /dev/mtab to get the
* list of available filesystems used for the -t auto option */
#if defined BB_FEATURE_USE_PROCFS && defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
//#error Sorry, but busybox can't use both /proc and /dev/ps at the same time -- Pick one and try again.
#error "Sorry, but busybox can't use both /proc and /dev/ps at the same time -- Pick one and try again."
#endif
#if defined BB_MOUNT || defined BB_UMOUNT || defined BB_DF
# if defined BB_FEATURE_USE_PROCFS
@ -64,7 +71,11 @@ const char mtab_file[] = "/proc/mounts";
# if defined BB_MTAB
const char mtab_file[] = "/etc/mtab";
# else
# error With (BB_MOUNT||BB_UMOUNT||BB_DF) defined, you must define either BB_MTAB or BB_FEATURE_USE_PROCFS
# if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
const char mtab_file[] = "/dev/mtab";
# else
# error With (BB_MOUNT||BB_UMOUNT||BB_DF) defined, you must define either BB_MTAB or ( BB_FEATURE_USE_PROCFS | BB_FEATURE_USE_DEVPS_N_DEVMTAB)
# endif
# endif
# endif
#endif
@ -1238,29 +1249,96 @@ extern int device_open(char *device, int mode)
#if defined BB_INIT || defined BB_HALT || defined BB_REBOOT
#if ! defined BB_FEATURE_USE_PROCFS
#error Sorry, I depend on the /proc filesystem right now.
#ifdef BB_FEATURE_USE_DEVPS_N_DEVMTAB
#include <linux/devps.h>
#endif
/* findInitPid()
#if defined BB_FEATURE_USE_DEVPS_N_DEVMTAB
/* findPidByName()
*
* This finds the pid of init (which is not always 1).
* Currently, it's implemented by rummaging through the proc filesystem.
* This finds the pid of the specified process,
* by using the /dev/ps device driver.
*
* [return]
* 0 failure
* pid when init's pid is found.
* pid when the pid is found.
*/
extern pid_t findInitPid()
extern pid_t findPidByName( char* pidName)
{
pid_t init_pid;
int fd, i;
char device[] = "/dev/ps";
pid_t thePid = 0;
pid_t num_pids;
pid_t* pid_array = NULL;
/* 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));
/* Now search for a match */
for (i=1; i<pid_array[0] ; i++) {
struct pid_info info;
info.pid = pid_array[i];
if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
fatalError( "\nDEVPS_GET_PID_INFO: %s\n", strerror (errno));
if ((strstr(info.command_line, pidName) != NULL)) {
thePid = info.pid;
break;
}
}
/* Free memory */
free( pid_array);
/* close device */
if (close (fd) != 0)
fatalError( "close failed for `%s': %s\n",device, strerror (errno));
return thePid;
}
#else /* BB_FEATURE_USE_DEVPS_N_DEVMTAB */
#if ! defined BB_FEATURE_USE_PROCFS
#error Sorry, I depend on the /proc filesystem right now.
#endif
/* findPidByName()
*
* This finds the pid of the specified process.
* Currently, it's implemented by rummaging through
* the proc filesystem.
*
* [return]
* 0 failure
* pid when the pid is found.
*/
extern pid_t findPidByName( char* pidName)
{
pid_t thePid;
char filename[256];
char buffer[256];
/* no need to opendir ;) */
for (init_pid = 1; init_pid < 65536; init_pid++) {
for (thePid = 1; thePid < 65536; thePid++) {
FILE *status;
sprintf(filename, "/proc/%d/cmdline", init_pid);
sprintf(filename, "/proc/%d/cmdline", thePid);
status = fopen(filename, "r");
if (!status) {
continue;
@ -1268,12 +1346,13 @@ extern pid_t findInitPid()
fgets(buffer, 256, status);
fclose(status);
if ((strstr(buffer, "init") != NULL)) {
return init_pid;
if ((strstr(buffer, pidName) != NULL)) {
return thePid;
}
}
return 0;
}
#endif /* BB_FEATURE_USE_DEVPS_N_DEVMTAB */
#endif /* BB_INIT || BB_HALT || BB_REBOOT */
#if defined BB_GUNZIP \