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-rw-r--r--ksysguard/ksysguardd/Linux/ProcessList.c554
1 files changed, 554 insertions, 0 deletions
diff --git a/ksysguard/ksysguardd/Linux/ProcessList.c b/ksysguard/ksysguardd/Linux/ProcessList.c
new file mode 100644
index 000000000..b267c7005
--- /dev/null
+++ b/ksysguard/ksysguardd/Linux/ProcessList.c
@@ -0,0 +1,554 @@
+/*
+ KSysGuard, the KDE System Guard
+
+ Copyright (c) 1999 - 2001 Chris Schlaeger <cs@kde.org>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of version 2 of the GNU General Public
+ License as published by the Free Software Foundation.
+
+ 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+*/
+
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "../../gui/SignalIDs.h"
+#include "Command.h"
+#include "PWUIDCache.h"
+#include "ccont.h"
+#include "ksysguardd.h"
+
+#include "ProcessList.h"
+
+#define BUFSIZE 1024
+#define TAGSIZE 32
+#define KDEINITLEN strlen( "kdeinit: " )
+
+static CONTAINER ProcessList = 0;
+
+typedef struct {
+ /**
+ This flag is set for all found processes at the beginning of the
+ process list update. Processes that do not have this flag set will
+ be assumed dead and removed from the list. The flag is cleared after
+ each list update.
+ */
+ int alive;
+
+ /* The process ID */
+ pid_t pid;
+
+ /* The parent process ID */
+ pid_t ppid;
+
+ /* The real user ID */
+ uid_t uid;
+
+ /* The real group ID */
+ gid_t gid;
+
+ /* A character description of the process status */
+ char status[ 16 ];
+
+ /* The number of the tty the process owns */
+ int ttyNo;
+
+ /**
+ The nice level. The range should be -20 to 20. I'm not sure
+ whether this is true for all platforms.
+ */
+ int niceLevel;
+
+ /* The scheduling priority. */
+ int priority;
+
+ /**
+ The total amount of memory the process uses. This includes shared and
+ swapped memory.
+ */
+ unsigned int vmSize;
+
+ /* The amount of physical memory the process currently uses. */
+ unsigned int vmRss;
+
+ /**
+ The number of 1/100 of a second the process has spend in user space.
+ If a machine has an uptime of 1 1/2 years or longer this is not a
+ good idea. I never thought that the stability of UNIX could get me
+ into trouble! ;)
+ */
+ unsigned int userTime;
+
+ /**
+ The number of 1/100 of a second the process has spend in system space.
+ If a machine has an uptime of 1 1/2 years or longer this is not a
+ good idea. I never thought that the stability of UNIX could get me
+ into trouble! ;)
+ */
+ unsigned int sysTime;
+
+ /* The system time as multime of 100ms */
+ int centStamp;
+
+ /* The current CPU load (in %) from user space */
+ double userLoad;
+
+ /* The current CPU load (in %) from system space */
+ double sysLoad;
+
+ /* The name of the process */
+ char name[ 64 ];
+
+ /* The command used to start the process */
+ char cmdline[ 256 ];
+
+ /* The login name of the user that owns this process */
+ char userName[ 32 ];
+} ProcessInfo;
+
+static unsigned ProcessCount;
+
+static void validateStr( char* str )
+{
+ char* s = str;
+
+ /* All characters that could screw up the communication will be removed. */
+ while ( *s ) {
+ if ( *s == '\t' || *s == '\n' || *s == '\r' )
+ *s = ' ';
+ ++s;
+ }
+
+ /* Make sure that string contains at least one character (blank). */
+ if ( str[ 0 ] == '\0' )
+ strcpy( str, " " );
+}
+
+static int processCmp( void* p1, void* p2 )
+{
+ return ( ((ProcessInfo*)p1)->pid - ((ProcessInfo*)p2)->pid );
+}
+
+static ProcessInfo* findProcessInList( int pid )
+{
+ ProcessInfo key;
+ long idx;
+
+ key.pid = pid;
+ if ( ( idx = search_ctnr( ProcessList, processCmp, &key ) ) < 0 )
+ return 0;
+
+ return get_ctnr( ProcessList, idx );
+}
+
+static int updateProcess( int pid )
+{
+ ProcessInfo* ps;
+ FILE* fd;
+ char buf[ BUFSIZE ];
+ char tag[ TAGSIZE ];
+ char format[ 32 ];
+ char tagformat[ 32 ];
+ int userTime, sysTime;
+ const char* uName;
+ char status;
+
+ if ( ( ps = findProcessInList( pid ) ) == 0 ) {
+ struct timeval tv;
+
+ ps = (ProcessInfo*)malloc( sizeof( ProcessInfo ) );
+ ps->pid = pid;
+ ps->alive = 0;
+
+ gettimeofday( &tv, 0 );
+ ps->centStamp = tv.tv_sec * 100 + tv.tv_usec / 10000;
+
+ push_ctnr( ProcessList, ps );
+ bsort_ctnr( ProcessList, processCmp );
+ }
+
+ snprintf( buf, BUFSIZE - 1, "/proc/%d/status", pid );
+ if ( ( fd = fopen( buf, "r" ) ) == 0 ) {
+ /* process has terminated in the mean time */
+ return -1;
+ }
+
+ sprintf( format, "%%%d[^\n]\n", (int)sizeof( buf ) - 1 );
+ sprintf( tagformat, "%%%ds", (int)sizeof( tag ) - 1 );
+ for ( ;; ) {
+ if ( fscanf( fd, format, buf ) != 1 )
+ break;
+ buf[ sizeof( buf ) - 1 ] = '\0';
+ sscanf( buf, tagformat, tag );
+ tag[ sizeof( tag ) - 1 ] = '\0';
+ if ( strcmp( tag, "Name:" ) == 0 ) {
+ sscanf( buf, "%*s %63s", ps->name );
+ validateStr( ps->name );
+ } else if ( strcmp( tag, "Uid:" ) == 0 )
+ sscanf( buf, "%*s %d %*d %*d %*d", (int*)&ps->uid );
+ }
+
+ if ( fclose( fd ) )
+ return -1;
+
+ snprintf( buf, BUFSIZE - 1, "/proc/%d/stat", pid );
+ buf[ BUFSIZE - 1 ] = '\0';
+ if ( ( fd = fopen( buf, "r" ) ) == 0 )
+ return -1;
+
+ if ( fscanf( fd, "%*d %*s %c %d %d %*d %d %*d %*u %*u %*u %*u %*u %d %d"
+ "%*d %*d %*d %d %*u %*u %*d %u %u",
+ &status, (int*)&ps->ppid, (int*)&ps->gid, &ps->ttyNo,
+ &userTime, &sysTime, &ps->niceLevel, &ps->vmSize,
+ &ps->vmRss) != 9 ) {
+ fclose( fd );
+ return -1;
+ }
+
+ if ( fclose( fd ) )
+ return -1;
+
+ /* status decoding as taken from fs/proc/array.c */
+ if ( status == 'R' )
+ strcpy( ps->status, "running" );
+ else if ( status == 'S' )
+ strcpy( ps->status, "sleeping" );
+ else if ( status == 'D' )
+ strcpy( ps->status, "disk sleep" );
+ else if ( status == 'Z' )
+ strcpy( ps->status, "zombie" );
+ else if ( status == 'T' )
+ strcpy( ps->status, "stopped" );
+ else if ( status == 'W' )
+ strcpy( ps->status, "paging" );
+ else
+ sprintf( ps->status, "Unknown: %c", status );
+
+ ps->vmRss = ( ps->vmRss + 3 ) * sysconf(_SC_PAGESIZE);
+
+ {
+ int newCentStamp;
+ int timeDiff, userDiff, sysDiff;
+ struct timeval tv;
+
+ gettimeofday( &tv, 0 );
+ newCentStamp = tv.tv_sec * 100 + tv.tv_usec / 10000;
+
+ timeDiff = newCentStamp - ps->centStamp;
+ userDiff = userTime - ps->userTime;
+ sysDiff = sysTime - ps->sysTime;
+
+ if ( ( timeDiff > 0 ) && ( userDiff >= 0 ) && ( sysDiff >= 0 ) ) {
+ ps->userLoad = ( (double)userDiff / timeDiff ) * 100.0;
+ ps->sysLoad = ( (double)sysDiff / timeDiff ) * 100.0;
+ /**
+ During startup we get bigger loads since the time diff
+ cannot be correct. So we force it to 0.
+ */
+ if ( ps->userLoad > 100.0 )
+ ps->userLoad = 0.0;
+ if ( ps->sysLoad > 100.0 )
+ ps->sysLoad = 0.0;
+ } else
+ ps->sysLoad = ps->userLoad = 0.0;
+
+ ps->centStamp = newCentStamp;
+ ps->userTime = userTime;
+ ps->sysTime = sysTime;
+ }
+
+ snprintf( buf, BUFSIZE - 1, "/proc/%d/cmdline", pid );
+ if ( ( fd = fopen( buf, "r" ) ) == 0 )
+ return -1;
+
+ ps->cmdline[ 0 ] = '\0';
+ sprintf( buf, "%%%d[^\n]", (int)sizeof( ps->cmdline ) - 1 );
+ fscanf( fd, buf, ps->cmdline );
+ ps->cmdline[ sizeof( ps->cmdline ) - 1 ] = '\0';
+ validateStr( ps->cmdline );
+ if ( fclose( fd ) )
+ return -1;
+
+ /* Ugly hack to "fix" program name for kdeinit launched programs. */
+ if ( strcmp( ps->name, "kdeinit" ) == 0 &&
+ strncmp( ps->cmdline, "kdeinit: ", KDEINITLEN ) == 0 &&
+ strcmp( ps->cmdline + KDEINITLEN, "Running..." ) != 0 ) {
+ size_t len;
+ char* end = strchr( ps->cmdline + KDEINITLEN, ' ' );
+ if ( end )
+ len = ( end - ps->cmdline ) - KDEINITLEN;
+ else
+ len = strlen( ps->cmdline + KDEINITLEN );
+ if ( len > 0 ) {
+ if ( len > sizeof( ps->name ) - 1 )
+ len = sizeof( ps->name ) - 1;
+ strncpy( ps->name, ps->cmdline + KDEINITLEN, len );
+ ps->name[ len ] = '\0';
+ }
+ }
+
+ /* find out user name with the process uid */
+ uName = getCachedPWUID( ps->uid );
+ strncpy( ps->userName, uName, sizeof( ps->userName ) - 1 );
+ ps->userName[ sizeof( ps->userName ) - 1 ] = '\0';
+ validateStr( ps->userName );
+
+ ps->alive = 1;
+
+ return 0;
+}
+
+static void cleanupProcessList( void )
+{
+ ProcessInfo* ps;
+
+ ProcessCount = 0;
+ /**
+ All processes that do not have the active flag set are assumed dead
+ and will be removed from the list. The alive flag is cleared.
+ */
+ for ( ps = first_ctnr( ProcessList ); ps; ps = next_ctnr( ProcessList ) ) {
+ if ( ps->alive ) {
+ /* Process is still alive. Just clear flag. */
+ ps->alive = 0;
+ ProcessCount++;
+ } else {
+ /**
+ Process has probably died. We remove it from the list and
+ destruct the data structure. i needs to be decremented so
+ that after i++ the next list element will be inspected.
+ */
+ free( remove_ctnr( ProcessList ) );
+ }
+ }
+}
+
+int updateProcessList( void )
+{
+ DIR* dir;
+ struct dirent* entry;
+
+ /* read in current process list via the /proc filesystem entry */
+ if ( ( dir = opendir( "/proc" ) ) == NULL ) {
+ print_error( "Cannot open directory \'/proc\'!\n"
+ "The kernel needs to be compiled with support\n"
+ "for /proc filesystem enabled!\n" );
+ return 0;
+ }
+
+ while ( ( entry = readdir( dir ) ) ) {
+ if ( isdigit( entry->d_name[ 0 ] ) ) {
+ int pid;
+
+ pid = atoi( entry->d_name );
+ updateProcess( pid );
+ }
+ }
+ closedir( dir );
+
+ cleanupProcessList();
+ return 0;
+}
+
+/*
+================================ public part =================================
+*/
+
+void initProcessList( struct SensorModul* sm )
+{
+ initPWUIDCache();
+
+ ProcessList = new_ctnr();
+
+ registerMonitor( "pscount", "integer", printProcessCount, printProcessCountInfo, sm );
+ registerMonitor( "ps", "table", printProcessList, printProcessListInfo, sm );
+
+ if ( !RunAsDaemon ) {
+ registerCommand( "kill", killProcess );
+ registerCommand( "setpriority", setPriority );
+ }
+
+ updateProcessList();
+}
+
+void exitProcessList( void )
+{
+ removeMonitor( "ps" );
+ removeMonitor( "pscount" );
+
+ if ( !RunAsDaemon ) {
+ removeCommand( "kill" );
+ removeCommand( "setpriority" );
+ }
+
+ destr_ctnr( ProcessList, free );
+
+ exitPWUIDCache();
+}
+
+void printProcessListInfo( const char* cmd )
+{
+ (void)cmd;
+ fprintf( CurrentClient, "Name\tPID\tPPID\tUID\tGID\tStatus\tUser%%\tSystem%%\tNice\tVmSize"
+ "\tVmRss\tLogin\tCommand\n" );
+ fprintf( CurrentClient, "s\td\td\td\td\tS\tf\tf\td\tD\tD\ts\ts\n" );
+}
+
+void printProcessList( const char* cmd )
+{
+ ProcessInfo* ps;
+
+ (void)cmd;
+
+ for ( ps = first_ctnr( ProcessList ); ps; ps = next_ctnr( ProcessList ) ) {
+ fprintf( CurrentClient, "%s\t%ld\t%ld\t%ld\t%ld\t%s\t%.2f\t%.2f\t%d\t%d\t%d"
+ "\t%s\t%s\n", ps->name, (long)ps->pid, (long)ps->ppid,
+ (long)ps->uid, (long)ps->gid, ps->status, ps->userLoad,
+ ps->sysLoad, ps->niceLevel, ps->vmSize / 1024, ps->vmRss / 1024,
+ ps->userName, ps->cmdline );
+ }
+
+ fprintf( CurrentClient, "\n" );
+}
+
+void printProcessCount( const char* cmd )
+{
+ (void)cmd;
+ fprintf( CurrentClient, "%d\n", ProcessCount );
+}
+
+void printProcessCountInfo( const char* cmd )
+{
+ (void)cmd;
+ fprintf( CurrentClient, "Number of Processes\t0\t0\t\n" );
+}
+
+void killProcess( const char* cmd )
+{
+ int sig, pid;
+
+ sscanf( cmd, "%*s %d %d", &pid, &sig );
+ switch( sig ) {
+ case MENU_ID_SIGABRT:
+ sig = SIGABRT;
+ break;
+ case MENU_ID_SIGALRM:
+ sig = SIGALRM;
+ break;
+ case MENU_ID_SIGCHLD:
+ sig = SIGCHLD;
+ break;
+ case MENU_ID_SIGCONT:
+ sig = SIGCONT;
+ break;
+ case MENU_ID_SIGFPE:
+ sig = SIGFPE;
+ break;
+ case MENU_ID_SIGHUP:
+ sig = SIGHUP;
+ break;
+ case MENU_ID_SIGILL:
+ sig = SIGILL;
+ break;
+ case MENU_ID_SIGINT:
+ sig = SIGINT;
+ break;
+ case MENU_ID_SIGKILL:
+ sig = SIGKILL;
+ break;
+ case MENU_ID_SIGPIPE:
+ sig = SIGPIPE;
+ break;
+ case MENU_ID_SIGQUIT:
+ sig = SIGQUIT;
+ break;
+ case MENU_ID_SIGSEGV:
+ sig = SIGSEGV;
+ break;
+ case MENU_ID_SIGSTOP:
+ sig = SIGSTOP;
+ break;
+ case MENU_ID_SIGTERM:
+ sig = SIGTERM;
+ break;
+ case MENU_ID_SIGTSTP:
+ sig = SIGTSTP;
+ break;
+ case MENU_ID_SIGTTIN:
+ sig = SIGTTIN;
+ break;
+ case MENU_ID_SIGTTOU:
+ sig = SIGTTOU;
+ break;
+ case MENU_ID_SIGUSR1:
+ sig = SIGUSR1;
+ break;
+ case MENU_ID_SIGUSR2:
+ sig = SIGUSR2;
+ break;
+ }
+
+ if ( kill( (pid_t)pid, sig ) ) {
+ switch ( errno ) {
+ case EINVAL:
+ fprintf( CurrentClient, "4\t%d\n", pid );
+ break;
+ case ESRCH:
+ fprintf( CurrentClient, "3\t%d\n", pid );
+ break;
+ case EPERM:
+ if(vfork() == 0) {
+ exit(0);/* Won't execute unless execve fails. Need this for the parent process to continue */
+ }
+ fprintf( CurrentClient, "2\t%d\n", pid );
+ break;
+ default: /* unknown error */
+ fprintf( CurrentClient, "1\t%d\n", pid );
+ break;
+ }
+ } else
+ fprintf( CurrentClient, "0\t%d\n", pid );
+}
+
+void setPriority( const char* cmd )
+{
+ int pid, prio;
+
+ sscanf( cmd, "%*s %d %d", &pid, &prio );
+ if ( setpriority( PRIO_PROCESS, pid, prio ) ) {
+ switch ( errno ) {
+ case EINVAL:
+ fprintf( CurrentClient, "4\n" );
+ break;
+ case ESRCH:
+ fprintf( CurrentClient, "3\n" );
+ break;
+ case EPERM:
+ case EACCES:
+ fprintf( CurrentClient, "2\n" );
+ break;
+ default: /* unknown error */
+ fprintf( CurrentClient, "1\n" );
+ break;
+ }
+ } else
+ fprintf( CurrentClient, "0\n" );
+}
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