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NetBSD/sys/kern/kern_xxx.c

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/* $NetBSD: kern_xxx.c,v 1.23 1995/04/13 20:49:11 mycroft Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <vm/vm.h>
#include <sys/sysctl.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
/* ARGSUSED */
int
reboot(p, uap, retval)
struct proc *p;
struct reboot_args /* {
syscallarg(int) opt;
} */ *uap;
register_t *retval;
{
int error;
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
boot(SCARG(uap, opt));
return (0);
}
#if defined(COMPAT_43) || defined(COMPAT_SUNOS) || defined(COMPAT_LINUX)
/* ARGSUSED */
int
compat_43_gethostname(p, uap, retval)
struct proc *p;
struct compat_43_gethostname_args /* {
syscallarg(char *) hostname;
syscallarg(u_int) len;
} */ *uap;
register_t *retval;
{
int name;
name = KERN_HOSTNAME;
return (kern_sysctl(&name, 1, SCARG(uap, hostname), &SCARG(uap, len),
0, 0));
}
/* ARGSUSED */
int
compat_43_sethostname(p, uap, retval)
struct proc *p;
register struct compat_43_sethostname_args *uap;
register_t *retval;
{
int name;
int error;
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
name = KERN_HOSTNAME;
return (kern_sysctl(&name, 1, 0, 0, SCARG(uap, hostname),
SCARG(uap, len)));
}
/* ARGSUSED */
int
compat_43_gethostid(p, uap, retval)
struct proc *p;
void *uap;
register_t *retval;
{
*(int32_t *)retval = hostid;
return (0);
}
#endif /* COMPAT_43 || COMPAT_SUNOS || COMPAT_LINUX */
#ifdef COMPAT_43
/* ARGSUSED */
int
compat_43_sethostid(p, uap, retval)
struct proc *p;
struct compat_43_sethostid_args /* {
syscallarg(int32_t) hostid;
} */ *uap;
register_t *retval;
{
int error;
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
hostid = SCARG(uap, hostid);
return (0);
}
int
compat_43_quota(p, uap, retval)
struct proc *p;
void *uap;
register_t *retval;
{
return (ENOSYS);
}
#endif /* COMPAT_43 */
#if defined(COMPAT_09) || defined(COMPAT_SUNOS) ||defined(COMPAT_HPUX) \
|| defined(COMPAT_ULTRIX) || defined(COMPAT_LINUX)
/* ARGSUSED */
int
compat_09_getdomainname(p, uap, retval)
struct proc *p;
struct compat_09_getdomainname_args /* {
syscallarg(char *) domainname;
syscallarg(int) len;
} */ *uap;
register_t *retval;
{
int name;
name = KERN_DOMAINNAME;
return (kern_sysctl(&name, 1, SCARG(uap, domainname),
&SCARG(uap, len), 0, 0));
}
/* ARGSUSED */
int
compat_09_setdomainname(p, uap, retval)
struct proc *p;
struct compat_09_setdomainname_args /* {
syscallarg(char *) domainname;
syscallarg(int) len;
} */ *uap;
register_t *retval;
{
int name;
int error;
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
name = KERN_DOMAINNAME;
return (kern_sysctl(&name, 1, 0, 0, SCARG(uap, domainname),
SCARG(uap, len)));
}
#endif /* COMPAT_09 || COMPAT_SUNOS || COMPAT_HPUX || COMPAT_ULTRIX
COMPAT_LINUX */
#ifdef COMPAT_09
struct outsname {
char sysname[32];
char nodename[32];
char release[32];
char version[32];
char machine[32];
};
/* ARGSUSED */
int
compat_09_uname(p, uap, retval)
struct proc *p;
struct compat_09_uname_args /* {
syscallarg(struct outsname *) name;
} */ *uap;
register_t *retval;
{
struct outsname outsname;
char *cp, *dp, *ep;
extern char ostype[], osrelease[];
strncpy(outsname.sysname, ostype, sizeof(outsname.sysname));
strncpy(outsname.nodename, hostname, sizeof(outsname.nodename));
strncpy(outsname.release, osrelease, sizeof(outsname.release));
dp = outsname.version;
ep = &outsname.version[sizeof(outsname.version) - 1];
for (cp = version; *cp && *cp != '('; cp++)
;
for (cp++; *cp && *cp != ')' && dp < ep; cp++)
*dp++ = *cp;
for (; *cp && *cp != '#'; cp++)
;
for (; *cp && *cp != ':' && dp < ep; cp++)
*dp++ = *cp;
*dp = '\0';
strncpy(outsname.machine, MACHINE, sizeof(outsname.machine));
return (copyout((caddr_t)&outsname, (caddr_t)SCARG(uap, name),
sizeof(struct outsname)));
}
#endif /* COMPAT_09 */
#ifdef SYSCALL_DEBUG
#define SCDEBUG_CALLS 0x0001 /* show calls */
#define SCDEBUG_RETURNS 0x0002 /* show returns */
#define SCDEBUG_ALL 0x0004 /* even syscalls that are implemented */
#define SCDEBUG_SHOWARGS 0x0008 /* show arguments to calls */
int scdebug = SCDEBUG_CALLS|SCDEBUG_RETURNS|SCDEBUG_SHOWARGS;
extern int nsysent;
extern char *syscallnames[];
#ifdef COMPAT_SUNOS
extern int nsunos_sysent;
extern struct sysent sunos_sysent[];
extern char *sunos_syscallnames[];
#endif /* COMPAT_SUNOS */
#ifdef COMPAT_HPUX
extern int nhpux_sysent;
extern struct sysent hpux_sysent[];
extern char *hpux_syscallnames[];
#endif /* COMPAT_HPUX */
#ifdef COMPAT_ULTRIX
extern int nultrix_sysent;
extern struct sysent ultrix_sysent[];
extern char *ultrix_syscallnames[];
#endif /* COMPAT_ULTRIX */
#ifdef COMPAT_SVR4
extern int nsvr4_sysent;
extern struct sysent svr4_sysent[];
extern char *svr4_syscallnames[];
#endif /* COMPAT_SVR4 */
#ifdef COMPAT_IBCS2
extern int nibcs2_sysent;
extern struct sysent ibcs2_sysent[];
extern char *ibcs2_syscallnames[];
#endif /* COMPAT_IBCS2 */
#ifdef COMPAT_OSF1
extern int nosf1_sysent;
extern struct sysent osf1_sysent[];
extern char *osf1_syscallnames[];
#endif /* COMPAT_OSF1 */
#ifdef COMPAT_LINUX
extern int nlinux_sysent;
extern struct sysent linux_sysent[];
extern char *linux_syscallnames[];
#endif /* COMPAT_LINUX */
static struct os_syscall {
char *name;
int *nsysent;
struct sysent *sysent;
char **syscallnames;
} os_syscall[] = {
{ "NetBSD", &nsysent, sysent, syscallnames },
#ifdef COMPAT_SUNOS
{ "SunOS", &nsunos_sysent, sunos_sysent, sunos_syscallnames },
#else
{ NULL, },
#endif
#ifdef COMPAT_HPUX
{ "HP-UX", &nhpux_sysent, hpux_sysent, hpux_syscallnames },
#else
{ NULL, },
#endif
#ifdef COMPAT_ULTRIX
{ "Ultrix", &nultrix_sysent, ultrix_sysent, ultrix_syscallnames },
#else
{ NULL, },
#endif
#ifdef COMPAT_SVR4
{ "SVR4", &nsvr4_sysent, svr4_sysent, svr4_syscallnames },
#else
{ NULL, },
#endif
#ifdef COMPAT_IBCS2
{ "iBCS2", &nibcs2_sysent, ibcs2_sysent, ibcs2_syscallnames },
#else
{ NULL, },
#endif
{ NULL, },
#ifdef COMPAT_OSF1
{ "OSF/1", &nosf1_sysent, osf1_sysent, osf1_syscallnames },
#else
{ NULL, },
#endif
{ NULL, },
#ifdef COMPAT_LINUX
{ "Linux", &nlinux_sysent, linux_sysent, linux_syscallnames },
#else
{ NULL, },
#endif
};
void
scdebug_call(p, code, args)
struct proc *p;
register_t code, args[];
{
struct os_syscall *os;
struct sysent *sy;
int i;
if (!(scdebug & SCDEBUG_CALLS))
return;
#ifdef DIAGNOSTIC
if (p->p_emul > sizeof os_syscall/sizeof os_syscall[0] ||
os_syscall[p->p_emul].name == NULL)
panic("bogus p_emul");
#endif
os = &os_syscall[p->p_emul];
sy = &os->sysent[code];
if (!(scdebug & SCDEBUG_ALL || code < 0 || code >= *os->nsysent ||
sy->sy_call == nosys))
return;
printf("proc %d (%s): %s syscall ", p->p_pid, p->p_comm, os->name);
if (code < 0 || code >= *os->nsysent) {
printf("OUT OF RANGE (%d)", code);
code = 0;
} else
printf("%d", code);
printf(" called: %s", os->syscallnames[code]);
if (scdebug & SCDEBUG_SHOWARGS) {
printf("(");
for (i = 0; i < sy->sy_argsize / sizeof(register_t); i++)
printf("%s0x%lx", i == 0 ? "" : ", ", (long)args[i]);
printf(")");
}
printf("\n");
}
void
scdebug_ret(p, code, error, retval)
struct proc *p;
register_t code;
int error;
register_t retval[];
{
struct os_syscall *os;
struct sysent *sy;
if (!(scdebug & SCDEBUG_RETURNS))
return;
#ifdef DIAGNOSTIC
if (p->p_emul > sizeof os_syscall/sizeof os_syscall[0] ||
os_syscall[p->p_emul].name == NULL)
panic("bogus p_emul");
#endif
os = &os_syscall[p->p_emul];
sy = &os->sysent[code];
if (!(scdebug & SCDEBUG_ALL || code < 0 || code >= *os->nsysent ||
sy->sy_call == nosys))
return;
printf("proc %d (%s): %s syscall ", p->p_pid, p->p_comm, os->name);
if (code < 0 || code >= *os->nsysent) {
printf("OUT OF RANGE (%d)", code);
code = 0;
} else
printf("%d", code);
printf(" return: error = %d, retval = 0x%lx,0x%lx\n", error,
(long)retval[0], (long)retval[1]);
}
#endif /* SYSCALL_DEBUG */
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