aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/sysctl.c
diff options
context:
space:
mode:
authorEric Paris <eparis@redhat.com>2008-01-07 14:31:58 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2008-02-01 14:23:55 -0500
commitde6bbd1d30e5912620d25dd15e3f180ac7f9fcef (patch)
tree3807b13f8e2e490c258c5bb37915c95fc1bcfe20 /kernel/sysctl.c
parente445deb593d67c8ed13bd357c780a93d78bc84cf (diff)
[AUDIT] break large execve argument logging into smaller messages
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>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 357b68ba23ec..7cb1ac3e6fff 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -81,7 +81,6 @@ extern int percpu_pagelist_fraction;
81extern int compat_log; 81extern int compat_log;
82extern int maps_protect; 82extern int maps_protect;
83extern int sysctl_stat_interval; 83extern int sysctl_stat_interval;
84extern int audit_argv_kb;
85extern int latencytop_enabled; 84extern int latencytop_enabled;
86 85
87/* Constants used for minimum and maximum */ 86/* Constants used for minimum and maximum */
@@ -390,16 +389,6 @@ static struct ctl_table kern_table[] = {
390 .mode = 0644, 389 .mode = 0644,
391 .proc_handler = &proc_dointvec, 390 .proc_handler = &proc_dointvec,
392 }, 391 },
393#ifdef CONFIG_AUDITSYSCALL
394 {
395 .ctl_name = CTL_UNNUMBERED,
396 .procname = "audit_argv_kb",
397 .data = &audit_argv_kb,
398 .maxlen = sizeof(int),
399 .mode = 0644,
400 .proc_handler = &proc_dointvec,
401 },
402#endif
403 { 392 {
404 .ctl_name = KERN_CORE_PATTERN, 393 .ctl_name = KERN_CORE_PATTERN,
405 .procname = "core_pattern", 394 .procname = "core_pattern",
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-05 21:09:04 -0500

                                                                         



                                                          







                                                               


                                                                    


                                                




                                                              
 






















                                                                        
/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * 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 would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#ifndef __XFS_DMAPI_H__
#define __XFS_DMAPI_H__

/*	Values used to define the on-disk version of dm_attrname_t. All
 *	on-disk attribute names start with the 8-byte string "SGI_DMI_".
 *
 *      In the on-disk inode, DMAPI attribute names consist of the user-provided
 *      name with the DMATTR_PREFIXSTRING pre-pended.  This string must NEVER be
 *      changed.
 */

#define DMATTR_PREFIXLEN	8
#define DMATTR_PREFIXSTRING	"SGI_DMI_"

typedef enum {
	DM_EVENT_INVALID	= -1,
	DM_EVENT_CANCEL		= 0,		/* not supported */
	DM_EVENT_MOUNT		= 1,
	DM_EVENT_PREUNMOUNT	= 2,
	DM_EVENT_UNMOUNT	= 3,
	DM_EVENT_DEBUT		= 4,		/* not supported */
	DM_EVENT_CREATE		= 5,
	DM_EVENT_CLOSE		= 6,		/* not supported */
	DM_EVENT_POSTCREATE	= 7,
	DM_EVENT_REMOVE		= 8,
	DM_EVENT_POSTREMOVE	= 9,
	DM_EVENT_RENAME		= 10,
	DM_EVENT_POSTRENAME	= 11,
	DM_EVENT_LINK		= 12,
	DM_EVENT_POSTLINK	= 13,
	DM_EVENT_SYMLINK	= 14,
	DM_EVENT_POSTSYMLINK	= 15,
	DM_EVENT_READ		= 16,
	DM_EVENT_WRITE		= 17,
	DM_EVENT_TRUNCATE	= 18,
	DM_EVENT_ATTRIBUTE	= 19,
	DM_EVENT_DESTROY	= 20,
	DM_EVENT_NOSPACE	= 21,
	DM_EVENT_USER		= 22,
	DM_EVENT_MAX		= 23
} dm_eventtype_t;
#define HAVE_DM_EVENTTYPE_T

typedef enum {
	DM_RIGHT_NULL,
	DM_RIGHT_SHARED,
	DM_RIGHT_EXCL
} dm_right_t;
#define HAVE_DM_RIGHT_T

/* Defines for determining if an event message should be sent. */
#define	DM_EVENT_ENABLED(vfsp, ip, event) ( \
	unlikely ((vfsp)->vfs_flag & VFS_DMI) && \
		( ((ip)->i_d.di_dmevmask & (1 << event)) || \
		  ((ip)->i_mount->m_dmevmask & (1 << event)) ) \
	)

#define	DM_EVENT_ENABLED_IO(vfsp, io, event) ( \
	unlikely ((vfsp)->vfs_flag & VFS_DMI) && \
		( ((io)->io_dmevmask & (1 << event)) || \
		  ((io)->io_mount->m_dmevmask & (1 << event)) ) \
	)

#define DM_XFS_VALID_FS_EVENTS		( \
	(1 << DM_EVENT_PREUNMOUNT)	| \
	(1 << DM_EVENT_UNMOUNT)		| \
	(1 << DM_EVENT_NOSPACE)		| \
	(1 << DM_EVENT_DEBUT)		| \
	(1 << DM_EVENT_CREATE)		| \
	(1 << DM_EVENT_POSTCREATE)	| \
	(1 << DM_EVENT_REMOVE)		| \
	(1 << DM_EVENT_POSTREMOVE)	| \
	(1 << DM_EVENT_RENAME)		| \
	(1 << DM_EVENT_POSTRENAME)	| \
	(1 << DM_EVENT_LINK)		| \
	(1 << DM_EVENT_POSTLINK)	| \
	(1 << DM_EVENT_SYMLINK)		| \
	(1 << DM_EVENT_POSTSYMLINK)	| \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)

/* Events valid in dm_set_eventlist() when called with a file handle for
   a regular file or a symlink.  These events are persistent.
*/

#define	DM_XFS_VALID_FILE_EVENTS	( \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)

/* Events valid in dm_set_eventlist() when called with a file handle for
   a directory.  These events are persistent.
*/

#define	DM_XFS_VALID_DIRECTORY_EVENTS	( \
	(1 << DM_EVENT_CREATE)		| \
	(1 << DM_EVENT_POSTCREATE)	| \
	(1 << DM_EVENT_REMOVE)		| \
	(1 << DM_EVENT_POSTREMOVE)	| \
	(1 << DM_EVENT_RENAME)		| \
	(1 << DM_EVENT_POSTRENAME)	| \
	(1 << DM_EVENT_LINK)		| \
	(1 << DM_EVENT_POSTLINK)	| \
	(1 << DM_EVENT_SYMLINK)		| \
	(1 << DM_EVENT_POSTSYMLINK)	| \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)

/* Events supported by the XFS filesystem. */
#define	DM_XFS_SUPPORTED_EVENTS		( \
	(1 << DM_EVENT_MOUNT)		| \
	(1 << DM_EVENT_PREUNMOUNT)	| \
	(1 << DM_EVENT_UNMOUNT)		| \
	(1 << DM_EVENT_NOSPACE)		| \
	(1 << DM_EVENT_CREATE)		| \
	(1 << DM_EVENT_POSTCREATE)	| \
	(1 << DM_EVENT_REMOVE)		| \
	(1 << DM_EVENT_POSTREMOVE)	| \
	(1 << DM_EVENT_RENAME)		| \
	(1 << DM_EVENT_POSTRENAME)	| \
	(1 << DM_EVENT_LINK)		| \
	(1 << DM_EVENT_POSTLINK)	| \
	(1 << DM_EVENT_SYMLINK)		| \
	(1 << DM_EVENT_POSTSYMLINK)	| \
	(1 << DM_EVENT_READ)		| \
	(1 << DM_EVENT_WRITE)		| \
	(1 << DM_EVENT_TRUNCATE)	| \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)


/*
 *	Definitions used for the flags field on dm_send_*_event().
 */

#define DM_FLAGS_NDELAY		0x001	/* return EAGAIN after dm_pending() */
#define DM_FLAGS_UNWANTED	0x002	/* event not in fsys dm_eventset_t */
#define DM_FLAGS_ISEM		0x004	/* thread holds i_sem */
#define DM_FLAGS_IALLOCSEM_RD	0x010	/* thread holds i_alloc_sem rd */
#define DM_FLAGS_IALLOCSEM_WR	0x020	/* thread holds i_alloc_sem wr */

/*
 *	Based on IO_ISDIRECT, decide which i_ flag is set.
 */
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \
			      DM_FLAGS_ISEM : 0)
#define DM_SEM_FLAG_WR	(DM_FLAGS_IALLOCSEM_WR | DM_FLAGS_ISEM)
#endif

#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
    (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,22))
#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \
			      DM_FLAGS_IALLOCSEM_RD : DM_FLAGS_ISEM)
#define DM_SEM_FLAG_WR	(DM_FLAGS_IALLOCSEM_WR | DM_FLAGS_ISEM)
#endif

#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,21)
#define DM_SEM_FLAG_RD(ioflags) (((ioflags) & IO_ISDIRECT) ? \
			      0 : DM_FLAGS_ISEM)
#define DM_SEM_FLAG_WR	(DM_FLAGS_ISEM)
#endif


/*
 *	Macros to turn caller specified delay/block flags into
 *	dm_send_xxxx_event flag DM_FLAGS_NDELAY.
 */

#define FILP_DELAY_FLAG(filp) ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) ? \
			DM_FLAGS_NDELAY : 0)
#define AT_DELAY_FLAG(f) ((f&ATTR_NONBLOCK) ? DM_FLAGS_NDELAY : 0)


extern struct bhv_vfsops xfs_dmops;

#ifdef CONFIG_XFS_DMAPI
void xfs_dm_init(struct file_system_type *);
void xfs_dm_exit(struct file_system_type *);
#define XFS_DM_INIT(fstype)	xfs_dm_init(fstype)
#define XFS_DM_EXIT(fstype)	xfs_dm_exit(fstype)
#else
#define XFS_DM_INIT(fstype)
#define XFS_DM_EXIT(fstype)
#endif

#endif  /* __XFS_DMAPI_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-05 21:09:04 -0500