source: branches/minix3-book/include/sys/svrctl.h

/*
sys/svrctl.h

Created:        Feb 15, 1994 by Philip Homburg <philip@cs.vu.nl>
*/

#ifndef _SYS__SVRCTL_H
#define _SYS__SVRCTL_H

#ifndef _TYPES_H
#include <sys/types.h>
#endif

/* Server control commands have the same encoding as the commands for ioctls. */
#include <minix/ioctl.h>

/* MM controls. */
#define MMSIGNON        _IO ('M',  4)
#define MMSWAPON        _IOW('M',  5, struct mmswapon)
#define MMSWAPOFF       _IO ('M',  6)
#define MMGETPARAM      _IOW('M',  5, struct sysgetenv)
#define MMSETPARAM      _IOR('M',  7, struct sysgetenv)

/* FS controls. */
#define FSSIGNON        _IOW('F',  2, struct fssignon)
#define FSDEVMAP        _IORW('F', 5, struct fsdevmap)

/* Kernel controls. */
#define SYSSENDMASK     _IO ('S',  4)
#define SYSSIGNON       _IOR('S',  2, struct systaskinfo)
#define SYSGETENV       _IOW('S',  1, struct sysgetenv)

struct mmswapon {
        u32_t           offset;         /* Starting offset within file. */
        u32_t           size;           /* Size of swap area. */
        char            file[128];      /* Name of swap file/device. */
};

struct svrqueryparam {
        char            *param;         /* Names of parameters to query. */
        size_t          psize;          /* Length of param[]. */
        char            *value;         /* To return values. */
        size_t          vsize;
};

/* A proper system call must be created later. */
#include <minix/dmap.h>
struct fssignon {
        dev_t           dev;            /* Device to manage. */
        enum dev_style  style;          /* Management style. */
};

struct systaskinfo {
        int             proc_nr;        /* Process number of caller. */
};

struct sysgetenv {
        char            *key;           /* Name requested. */
        size_t          keylen;         /* Length of name including \0. */
        char            *val;           /* Buffer for returned data. */
        size_t          vallen;         /* Size of return data buffer. */
};

_PROTOTYPE( int svrctl, (int _request, void *_data)                     );

#endif /* _SYS__SVRCTL_H */