- add llist_free_one() and llist_free() to libbb; Add a bit of documentation.

- 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.

1 files changed, 19 insertions, 18 deletions

diff --git a/libbb/find_pid_by_name.c b/libbb/find_pid_by_name.c
index 570e7bd93..966595ddb 100644
--- a/libbb/find_pid_by_name.c
+++ b/libbb/find_pid_by_name.c
@@ -4,19 +4,7 @@
  *
  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * 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
+ * Licensed under the GPL v2, see the file LICENSE in this tarball.
  */
 
 #include <stdio.h>
@@ -25,10 +13,6 @@
 #include <stdlib.h>
 #include "libbb.h"
 
-#define COMM_LEN 16 /* synchronize with size of comm in struct task_struct
-                                           in /usr/include/linux/sched.h */
-
-
 /* find_pid_by_name()
  *
  *  Modified by Vladimir Oleynik for use with libbb/procps.c
@@ -37,6 +21,7 @@
  *  the proc filesystem.
  *
  *  Returns a list of all matching PIDs
+ *  It is the caller's duty to free the returned pidlist.
  */
 extern long* find_pid_by_name( const char* pidName)
 {
@@ -45,7 +30,7 @@ extern long* find_pid_by_name( const char* pidName)
         procps_status_t * p;
 
         pidList = xmalloc(sizeof(long));
-        while ((p = procps_scan(0)) != 0) 
+        while ((p = procps_scan(0)) != 0)
         {
                 if (strncmp(p->short_cmd, pidName, COMM_LEN-1) == 0) {
                         pidList=xrealloc( pidList, sizeof(long) * (i+2));
@@ -57,6 +42,22 @@ extern long* find_pid_by_name( const char* pidName)
         return pidList;
 }
 
+extern long *pidlist_reverse(long *pidList)
+{
+        int i=0;
+        while (pidList[i] > 0 && i++);
+        if ( i-- > 0) {
+                long k;
+                int j;
+                for (j = 0; i > j; i--, j++) {
+                        k = pidList[i];
+                        pidList[i] = pidList[j];
+                        pidList[j] = k;
+                }
+        }
+        return pidList;
+}
+
 /* END CODE */
 /*
 Local Variables: