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*sysctl* configuration files can now contain longer lines
Previously, *sysctl* configuration files could only contain lines up to 255 characters long. With this update, the maximum acceptable line length has been increased to 4095 characters.
Description of problem:
In RHEL6, 'sysctl -p' has a hard-coded line size limit of 256 characters.
<sysctl.c>
/*
* Preload the sysctl's from the conf file
* - we parse the file and then reform it (strip out whitespace)
*
*/
static int Preload(const char *restrict const filename) {
char oneline[256];
char buffer[256];
FILE *fp;
</sysctl.c>
Upstream and RHEL7 increase this to 4k:
<RHEL7 sysctl.c>
#define LINELEN 4096
/*
* Preload the sysctl's from the conf file. We parse the file and then
* reform it (strip out whitespace).
*/
static int Preload(const char *restrict const filename)
{
char oneline[LINELEN];
char buffer[LINELEN];
FILE *fp;
</RHEL7 sysctl.c>
My client would like to request that we increase this limit to bring it into line with newer releases as they currently do have conf lines which exceed this (and the rc.local workaround isn't ideal).
Version-Release number of selected component (if applicable):
procps-3.2.8-30.el6.x86_64
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2016-0904.html
Description of problem: In RHEL6, 'sysctl -p' has a hard-coded line size limit of 256 characters. <sysctl.c> /* * Preload the sysctl's from the conf file * - we parse the file and then reform it (strip out whitespace) * */ static int Preload(const char *restrict const filename) { char oneline[256]; char buffer[256]; FILE *fp; </sysctl.c> Upstream and RHEL7 increase this to 4k: <RHEL7 sysctl.c> #define LINELEN 4096 /* * Preload the sysctl's from the conf file. We parse the file and then * reform it (strip out whitespace). */ static int Preload(const char *restrict const filename) { char oneline[LINELEN]; char buffer[LINELEN]; FILE *fp; </RHEL7 sysctl.c> My client would like to request that we increase this limit to bring it into line with newer releases as they currently do have conf lines which exceed this (and the rc.local workaround isn't ideal). Version-Release number of selected component (if applicable): procps-3.2.8-30.el6.x86_64