include/ub.h

/*
 * Copyright (C) 2000-2005 SWsoft. All rights reserved.
 *
 * This file may be distributed under the terms of the Q Public License
 * as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
#ifndef	_UB_H_
#define	_UB_H_

#include "types.h"

#define PROCUBC		"/proc/user_beancounters"

#ifndef UB_KMEMSIZE
#define UB_KMEMSIZE	0	/* Unswappable kernel memory size including
				 * struct task, page directories, etc.
				 */
#endif
#ifndef UB_LOCKEDPAGES
#define UB_LOCKEDPAGES	1	/* Mlock()ed pages. */
#endif
#ifndef UB_PRIVVMPAGES
#define UB_PRIVVMPAGES	2	/* Total number of pages, counting potentially
				 * private pages as private and used.
				 */
#endif
#ifndef UB_SHMPAGES
#define UB_SHMPAGES	3	/* IPC SHM segment size. */
#endif
#ifndef UB_ZSHMPAGES
#define UB_ZSHMPAGES	4	/* Anonymous shared memory. */
#endif
#ifndef UB_NUMPROC
#define UB_NUMPROC	5	/* Number of processes. */
#endif
#ifndef UB_PHYSPAGES
#define UB_PHYSPAGES	6	/* All resident pages, for swapout guarantee. */
#endif
#ifndef UB_VMGUARPAGES
#define UB_VMGUARPAGES	7	/* Guarantee for memory allocation,
				 * checked against PRIVVMPAGES.
				 */
#endif
#ifndef UB_OOMGUARPAGES
#define UB_OOMGUARPAGES	8	/* Guarantees against OOM kill.
				 * Only limit is used, no accounting.
				 */
#endif
#ifndef UB_NUMTCPSOCK
#define UB_NUMTCPSOCK	9	/* Number of TCP sockets. */
#endif
#ifndef UB_NUMFLOCK
#define UB_NUMFLOCK	10	/* Number of file locks. */
#endif
#ifndef UB_NUMPTY
#define UB_NUMPTY	11	/* Number of PTYs. */
#endif
#ifndef UB_NUMSIGINFO
#define UB_NUMSIGINFO	12	/* Number of siginfos. */
#endif
#ifndef UB_TCPSNDBUF
#define UB_TCPSNDBUF	13	/* Total size of tcp send buffers. */
#endif
#ifndef UB_TCPRCVBUF
#define UB_TCPRCVBUF	14	/* Total size of tcp receive buffers. */
#endif
#ifndef UB_OTHERSOCKBUF
#define UB_OTHERSOCKBUF	15	/* Total size of other socket
				 * send buffers (all buffers for PF_UNIX).
				 */
#endif
#ifndef UB_DGRAMRCVBUF
#define UB_DGRAMRCVBUF	16	/* Total size of other socket
				 * receive buffers.
				 */
#endif
#ifndef UB_NUMOTHERSOCK
#define UB_NUMOTHERSOCK	17	/* Number of other sockets. */
#endif
#ifndef UB_DCACHESIZE
#define UB_DCACHESIZE	18	/* Size of busy dentry/inode cache. */
#endif
#ifndef UB_NUMFILE
#define UB_NUMFILE	19	/* Number of open files. */
#endif
#ifndef UB_IPTENTRIES
#define UB_IPTENTRIES	23 /* Number of iptables rules */
#endif
#define UB_DUMMY	255

/** Data structure for UBC parameter.
 */
typedef struct {
        int res_id;		/**< UBC resource id. */
        unsigned long limit[2];	/**< UBC resource barrier:limit. */
} ub_res;

/** Data structure for array of UBC parameters.
 */
typedef struct {
        int num_res;		/**< Number of resources in array. */
        ub_res *ub;		/**< pointer on first element. */
} ub_param;

/** Static UBC structure
 */
struct ub_struct {
	unsigned long *kmemsize;
	unsigned long *lockedpages;
	unsigned long *privvmpages;
	unsigned long *shmpages;
	unsigned long *numproc;
	unsigned long *physpages;
	unsigned long *vmguarpages;
	unsigned long *oomguarpages;
	unsigned long *numtcpsock;
	unsigned long *numflock;
	unsigned long *numpty;
	unsigned long *numsiginfo;
	unsigned long *tcpsndbuf;
	unsigned long *tcprcvbuf;
	unsigned long *othersockbuf;
	unsigned long *dgramrcvbuf;
	unsigned long *numothersock;
	unsigned long *numfile;
	unsigned long *dcachesize;
	unsigned long *numiptent;
	unsigned long *avnumproc;
};

/** Apply UBC resources.
 *
 * @param h		VPS handler.
 * @param veid		VPS id.
 * @param ubc		UBC parameters
 * @return		0 on success
 */
int vps_set_ublimit(vps_handler *h, envid_t veid, ub_param *ubc);

int set_ublimit(vps_handler *h, envid_t veid, ub_param *ubc);

/** Check that all required parameters are specified in ub.
 *
 * @param ub		UBC parameters.
 * @return		0 on success.
 */
int check_ub(ub_param *ub);
int get_ub_resid(char *name);
ub_res *get_ub_res(ub_param *ub, int res_id);
const char *get_ub_name(int res_id);
int add_ub_param(ub_param *ub, ub_res *res);
void free_ub_param(ub_param *ub);
void merge_ub(ub_param *dst, ub_param *src);
int vps_read_ubc(envid_t veid, ub_param *ub);
void ub2ubs(ub_param *ub, struct ub_struct *ubs);
void add_ubs_limit(struct ub_struct *ubs, int res_id, unsigned long *limit);
#endif