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[AUDIT] break large execve argument logging into smaller messages

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execve arguments can be quite large.  There is no limit on the number of
arguments and a 4G limit on the size of an argument.

this patch prints those aruguments in bite sized pieces.  a userspace size
limitation of 8k was discovered so this keeps messages around 7.5k

single arguments larger than 7.5k in length are split into multiple records
and can be identified as aX[Y]=

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2008-01-07 14:31:58 -05:00 • committed by Al Viro
parent e445deb593
commit de6bbd1d30
5 changed files with 196 additions and 78 deletions
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11
kernel/sysctl.c
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@ -81,7 +81,6 @@ extern int percpu_pagelist_fraction;
extern int compat_log;
extern int maps_protect;
extern int sysctl_stat_interval;
extern int audit_argv_kb;
extern int latencytop_enabled;
/* Constants used for minimum and maximum */
@ -390,16 +389,6 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#ifdef CONFIG_AUDITSYSCALL
{
.ctl_name = CTL_UNNUMBERED,
.procname = "audit_argv_kb",
.data = &audit_argv_kb,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
#endif
{
.ctl_name = KERN_CORE_PATTERN,
.procname = "core_pattern",