sysctl.h

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

 */
#define	KERN_OSTYPE	 	 1	/* string: system version */
#define	KERN_OSRELEASE	 	 2	/* string: system release */
#define	KERN_OSREV	 	 3	/* int: system revision */
#define	KERN_VERSION	 	 4	/* string: compile time info */
#define	KERN_MAXVNODES	 	 5	/* int: max vnodes */
#define	KERN_MAXPROC	 	 6	/* int: max processes */
#define	KERN_MAXFILES	 	 7	/* int: max open files */
#define	KERN_ARGMAX	 	 8	/* int: max arguments to exec */
#define	KERN_SECURELVL	 	 9	/* int: system security level */
#define	KERN_HOSTNAME		10	/* string: hostname */
#define	KERN_HOSTID		11	/* int: host identifier */
#define	KERN_CLOCKRATE		12	/* struct: struct clockrate */
#define	KERN_VNODE		13	/* struct: vnode structures */
#define	KERN_PROC		14	/* struct: process entries */
#define	KERN_FILE		15	/* struct: file entries */
#define	KERN_PROF		16	/* node: kernel profiling info */
#define	KERN_POSIX1		17	/* int: POSIX.1 version */
#define	KERN_NGROUPS		18	/* int: # of supplemental group ids */
#define	KERN_JOB_CONTROL	19	/* int: is job control available */
#define	KERN_SAVED_IDS		20	/* int: saved set-user/group-ID */
#define	KERN_BOOTTIME		21	/* struct: time kernel was booted */
#define KERN_NISDOMAINNAME	22	/* string: YP domain name */
#define KERN_UPDATEINTERVAL	23	/* int: update process sleep time */
#define KERN_OSRELDATE		24	/* int: OS release date */
#define KERN_NTP_PLL		25	/* node: NTP PLL control */
#define	KERN_BOOTFILE		26	/* string: name of booted kernel */
#define	KERN_MAXFILESPERPROC	27	/* int: max open files per proc */
#define	KERN_MAXPROCPERUID 	28	/* int: max processes per uid */
#define KERN_DUMPDEV		29	/* dev_t: device to dump on */
#define	KERN_IPC		30	/* node: anything related to IPC */
#define	KERN_DUMMY		31	/* unused */
#define	KERN_PS_STRINGS		32	/* int: address of PS_STRINGS */
#define	KERN_USRSTACK		33	/* int: address of USRSTACK */
#define	KERN_LOGSIGEXIT		34	/* int: do we log sigexit procs? */
#define	KERN_IOV_MAX		35	/* int: value of UIO_MAXIOV */
#define KERN_MAXID		36      /* number of valid kern ids */

#define CTL_KERN_NAMES { \
	{ 0, 0 }, \
	{ "ostype", CTLTYPE_STRING }, \
	{ "osrelease", CTLTYPE_STRING }, \
	{ "osrevision", CTLTYPE_INT }, \
	{ "version", CTLTYPE_STRING }, \
	{ "maxvnodes", CTLTYPE_INT }, \
	{ "maxproc", CTLTYPE_INT }, \
	{ "maxfiles", CTLTYPE_INT }, \
	{ "argmax", CTLTYPE_INT }, \
	{ "securelevel", CTLTYPE_INT }, \
	{ "hostname", CTLTYPE_STRING }, \
	{ "hostid", CTLTYPE_UINT }, \
	{ "clockrate", CTLTYPE_STRUCT }, \
	{ "vnode", CTLTYPE_STRUCT }, \
	{ "proc", CTLTYPE_STRUCT }, \
	{ "file", CTLTYPE_STRUCT }, \
	{ "profiling", CTLTYPE_NODE }, \
	{ "posix1version", CTLTYPE_INT }, \
	{ "ngroups", CTLTYPE_INT }, \
	{ "job_control", CTLTYPE_INT }, \
	{ "saved_ids", CTLTYPE_INT }, \
	{ "boottime", CTLTYPE_STRUCT }, \
	{ "nisdomainname", CTLTYPE_STRING }, \
	{ "update", CTLTYPE_INT }, \
	{ "osreldate", CTLTYPE_INT }, \
	{ "ntp_pll", CTLTYPE_NODE }, \
	{ "bootfile", CTLTYPE_STRING }, \
	{ "maxfilesperproc", CTLTYPE_INT }, \
	{ "maxprocperuid", CTLTYPE_INT }, \
	{ "ipc", CTLTYPE_NODE }, \
	{ "dummy", CTLTYPE_INT }, \
	{ "ps_strings", CTLTYPE_INT }, \
	{ "usrstack", CTLTYPE_INT }, \
	{ "logsigexit", CTLTYPE_INT }, \
	{ "iov_max", CTLTYPE_INT }, \
}

/*
 * CTL_VFS identifiers
 */
#define CTL_VFS_NAMES { \
	{ "vfsconf", CTLTYPE_STRUCT }, \
}

/*
 * KERN_PROC subtypes
 */
#define KERN_PROC_ALL		0	/* everything */
#define	KERN_PROC_PID		1	/* by process id */
#define	KERN_PROC_PGRP		2	/* by process group id */
#define	KERN_PROC_SESSION	3	/* by session of pid */
#define	KERN_PROC_TTY		4	/* by controlling tty */
#define	KERN_PROC_UID		5	/* by effective uid */
#define	KERN_PROC_RUID		6	/* by real uid */
#define	KERN_PROC_ARGS		7	/* get/set arguments/proctitle */

/*
 * KERN_IPC identifiers
 */
#define KIPC_MAXSOCKBUF		1	/* int: max size of a socket buffer */
#define	KIPC_SOCKBUF_WASTE	2	/* int: wastage factor in sockbuf */
#define	KIPC_SOMAXCONN		3	/* int: max length of connection q */
#define	KIPC_MAX_LINKHDR	4	/* int: max length of link header */
#define	KIPC_MAX_PROTOHDR	5	/* int: max length of network header */
#define	KIPC_MAX_HDR		6	/* int: max total length of headers */
#define	KIPC_MAX_DATALEN	7	/* int: max length of data? */

/*
 * CTL_HW identifiers
 */
#define	HW_MACHINE	 1		/* string: machine class */
#define	HW_MODEL	 2		/* string: specific machine model */
#define	HW_NCPU		 3		/* int: number of cpus */
#define	HW_BYTEORDER	 4		/* int: machine byte order */
#define	HW_PHYSMEM	 5		/* int: total memory */
#define	HW_USERMEM	 6		/* int: non-kernel memory */
#define	HW_PAGESIZE	 7		/* int: software page size */
#define	HW_DISKNAMES	 8		/* strings: disk drive names */
#define	HW_DISKSTATS	 9		/* struct: diskstats[] */
#define HW_FLOATINGPT	10		/* int: has HW floating point? */
#define HW_MACHINE_ARCH	11		/* string: machine architecture */
#define	HW_MAXID	12		/* number of valid hw ids */

#define CTL_HW_NAMES { \
	{ 0, 0 }, \
	{ "machine", CTLTYPE_STRING }, \
	{ "model", CTLTYPE_STRING }, \
	{ "ncpu", CTLTYPE_INT }, \
	{ "byteorder", CTLTYPE_INT }, \
	{ "physmem", CTLTYPE_ULONG }, \
	{ "usermem", CTLTYPE_ULONG }, \
	{ "pagesize", CTLTYPE_INT }, \
	{ "disknames", CTLTYPE_STRUCT }, \
	{ "diskstats", CTLTYPE_STRUCT }, \
	{ "floatingpoint", CTLTYPE_INT }, \
}

/*
 * CTL_USER definitions
 */
#define	USER_CS_PATH		 1	/* string: _CS_PATH */
#define	USER_BC_BASE_MAX	 2	/* int: BC_BASE_MAX */
#define	USER_BC_DIM_MAX		 3	/* int: BC_DIM_MAX */
#define	USER_BC_SCALE_MAX	 4	/* int: BC_SCALE_MAX */
#define	USER_BC_STRING_MAX	 5	/* int: BC_STRING_MAX */
#define	USER_COLL_WEIGHTS_MAX	 6	/* int: COLL_WEIGHTS_MAX */
#define	USER_EXPR_NEST_MAX	 7	/* int: EXPR_NEST_MAX */
#define	USER_LINE_MAX		 8	/* int: LINE_MAX */
#define	USER_RE_DUP_MAX		 9	/* int: RE_DUP_MAX */
#define	USER_POSIX2_VERSION	10	/* int: POSIX2_VERSION */
#define	USER_POSIX2_C_BIND	11	/* int: POSIX2_C_BIND */
#define	USER_POSIX2_C_DEV	12	/* int: POSIX2_C_DEV */
#define	USER_POSIX2_CHAR_TERM	13	/* int: POSIX2_CHAR_TERM */
#define	USER_POSIX2_FORT_DEV	14	/* int: POSIX2_FORT_DEV */
#define	USER_POSIX2_FORT_RUN	15	/* int: POSIX2_FORT_RUN */
#define	USER_POSIX2_LOCALEDEF	16	/* int: POSIX2_LOCALEDEF */
#define	USER_POSIX2_SW_DEV	17	/* int: POSIX2_SW_DEV */
#define	USER_POSIX2_UPE		18	/* int: POSIX2_UPE */
#define	USER_STREAM_MAX		19	/* int: POSIX2_STREAM_MAX */
#define	USER_TZNAME_MAX		20	/* int: POSIX2_TZNAME_MAX */
#define	USER_MAXID		21	/* number of valid user ids */

#define	CTL_USER_NAMES { \
	{ 0, 0 }, \
	{ "cs_path", CTLTYPE_STRING }, \
	{ "bc_base_max", CTLTYPE_INT }, \
	{ "bc_dim_max", CTLTYPE_INT }, \
	{ "bc_scale_max", CTLTYPE_INT }, \
	{ "bc_string_max", CTLTYPE_INT }, \
	{ "coll_weights_max", CTLTYPE_INT }, \
	{ "expr_nest_max", CTLTYPE_INT }, \
	{ "line_max", CTLTYPE_INT }, \
	{ "re_dup_max", CTLTYPE_INT }, \
	{ "posix2_version", CTLTYPE_INT }, \
	{ "posix2_c_bind", CTLTYPE_INT }, \
	{ "posix2_c_dev", CTLTYPE_INT }, \
	{ "posix2_char_term", CTLTYPE_INT }, \
	{ "posix2_fort_dev", CTLTYPE_INT }, \
	{ "posix2_fort_run", CTLTYPE_INT }, \
	{ "posix2_localedef", CTLTYPE_INT }, \
	{ "posix2_sw_dev", CTLTYPE_INT }, \
	{ "posix2_upe", CTLTYPE_INT }, \
	{ "stream_max", CTLTYPE_INT }, \
	{ "tzname_max", CTLTYPE_INT }, \
}

#define CTL_P1003_1B_ASYNCHRONOUS_IO		1	/* boolean */
#define CTL_P1003_1B_MAPPED_FILES		2	/* boolean */
#define CTL_P1003_1B_MEMLOCK			3	/* boolean */
#define CTL_P1003_1B_MEMLOCK_RANGE		4	/* boolean */
#define CTL_P1003_1B_MEMORY_PROTECTION		5	/* boolean */
#define CTL_P1003_1B_MESSAGE_PASSING		6	/* boolean */
#define CTL_P1003_1B_PRIORITIZED_IO		7	/* boolean */
#define CTL_P1003_1B_PRIORITY_SCHEDULING	8	/* boolean */
#define CTL_P1003_1B_REALTIME_SIGNALS		9	/* boolean */
#define CTL_P1003_1B_SEMAPHORES			10	/* boolean */
#define CTL_P1003_1B_FSYNC			11	/* boolean */
#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS	12	/* boolean */
#define CTL_P1003_1B_SYNCHRONIZED_IO		13	/* boolean */
#define CTL_P1003_1B_TIMERS			14	/* boolean */
#define CTL_P1003_1B_AIO_LISTIO_MAX		15	/* int */
#define CTL_P1003_1B_AIO_MAX			16	/* int */
#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX		17	/* int */
#define CTL_P1003_1B_DELAYTIMER_MAX		18	/* int */
#define CTL_P1003_1B_MQ_OPEN_MAX		19	/* int */
#define CTL_P1003_1B_PAGESIZE			20	/* int */
#define CTL_P1003_1B_RTSIG_MAX			21	/* int */
#define CTL_P1003_1B_SEM_NSEMS_MAX		22	/* int */
#define CTL_P1003_1B_SEM_VALUE_MAX		23	/* int */
#define CTL_P1003_1B_SIGQUEUE_MAX		24	/* int */
#define CTL_P1003_1B_TIMER_MAX			25	/* int */

#define CTL_P1003_1B_MAXID		26

#define	CTL_P1003_1B_NAMES { \
	{ 0, 0 }, \
	{ "asynchronous_io", CTLTYPE_INT }, \
	{ "mapped_files", CTLTYPE_INT }, \
	{ "memlock", CTLTYPE_INT }, \
	{ "memlock_range", CTLTYPE_INT }, \
	{ "memory_protection", CTLTYPE_INT }, \
	{ "message_passing", CTLTYPE_INT }, \
	{ "prioritized_io", CTLTYPE_INT }, \
	{ "priority_scheduling", CTLTYPE_INT }, \
	{ "realtime_signals", CTLTYPE_INT }, \
	{ "semaphores", CTLTYPE_INT }, \
	{ "fsync", CTLTYPE_INT }, \
	{ "shared_memory_objects", CTLTYPE_INT }, \
	{ "synchronized_io", CTLTYPE_INT }, \
	{ "timers", CTLTYPE_INT }, \
	{ "aio_listio_max", CTLTYPE_INT }, \
	{ "aio_max", CTLTYPE_INT }, \
	{ "aio_prio_delta_max", CTLTYPE_INT }, \
	{ "delaytimer_max", CTLTYPE_INT }, \
	{ "mq_open_max", CTLTYPE_INT }, \
	{ "pagesize", CTLTYPE_INT }, \
	{ "rtsig_max", CTLTYPE_INT }, \
	{ "nsems_max", CTLTYPE_INT }, \
	{ "sem_value_max", CTLTYPE_INT }, \
	{ "sigqueue_max", CTLTYPE_INT }, \
	{ "timer_max", CTLTYPE_INT }, \
}

#ifdef KERNEL

/*
 * Declare some common oids.
 */
extern struct sysctl_oid_list sysctl__children;
SYSCTL_DECL(_kern);
SYSCTL_DECL(_sysctl);
SYSCTL_DECL(_vm);
SYSCTL_DECL(_vfs);
SYSCTL_DECL(_net);
SYSCTL_DECL(_debug);
SYSCTL_DECL(_debug_sizeof);
SYSCTL_DECL(_hw);
SYSCTL_DECL(_machdep);
SYSCTL_DECL(_user);
SYSCTL_DECL(_compat);

extern char	machine[];
extern char	osrelease[];
extern char	ostype[];

/* Dynamic oid handling */
struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
		struct sysctl_oid_list *parent, int nbr, const char *name,
		int kind, void *arg1, int arg2,
		int (*handler) (SYSCTL_HANDLER_ARGS),
		const char *fmt, const char *descr);
int	sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
int	sysctl_ctx_init(struct sysctl_ctx_list *clist);
int	sysctl_ctx_free(struct sysctl_ctx_list *clist);
struct	sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
		struct sysctl_oid *oidp);
struct	sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
		struct sysctl_oid *oidp);
int	sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
		struct sysctl_oid *oidp);

int	kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
		      size_t *oldlenp, void *new, size_t newlen,
		      size_t *retval);
int	kernel_sysctlbyname(struct thread *td, char *name,
		void *old, size_t *oldlenp, void *new, size_t newlen,
		size_t *retval);
int	userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
			size_t *oldlenp, int inkernel, void *new, size_t newlen,
			size_t *retval);
int	sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
			int *nindx, struct sysctl_req *req);
void	sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);

#else	/* !KERNEL */
#include <sys/cdefs.h>

__BEGIN_DECLS
int	sysctl(int *, u_int, void *, size_t *, void *, size_t);
int	sysctlbyname(const char *, void *, size_t *, void *, size_t);
int	sysctlnametomib(const char *, int *, size_t *);
__END_DECLS
#endif	/* KERNEL */

#endif	/* !_SYS_SYSCTL_H_ */