56b217117a
- change llist_add_to_end as proposed by vodz in http://busybox.net/lists/busybox/2005-September/016411.html - remove unneeded includes, add short boilerplate and copyright to llist.c - move COMM_LEN from find_pid_by_name to libbb.h and use it in procps_status_t - add reverse_pidlist() to find_pid_by_name. Will be needed for pidof.
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under the GPL v2, see the file LICENSE in this tarball.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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#include "libbb.h"
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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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* This finds the pid of the specified process.
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* Currently, it's implemented by rummaging through
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* the proc filesystem.
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*
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* Returns a list of all matching PIDs
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* It is the caller's duty to free the returned pidlist.
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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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long* pidList;
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int i=0;
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procps_status_t * p;
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pidList = xmalloc(sizeof(long));
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while ((p = procps_scan(0)) != 0)
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{
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if (strncmp(p->short_cmd, pidName, COMM_LEN-1) == 0) {
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pidList=xrealloc( pidList, sizeof(long) * (i+2));
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pidList[i++]=p->pid;
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}
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}
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pidList[i] = i==0 ? -1 : 0;
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return pidList;
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}
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extern long *pidlist_reverse(long *pidList)
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{
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int i=0;
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while (pidList[i] > 0 && i++);
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if ( i-- > 0) {
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long k;
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int j;
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for (j = 0; i > j; i--, j++) {
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k = pidList[i];
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pidList[i] = pidList[j];
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pidList[j] = k;
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}
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}
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return pidList;
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}
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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