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freebsd-skq/sys/compat/svr4/svr4_stat.c
John Baldwin 44731cab3b Change the suser() API to take advantage of td_ucred as well as do a 
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00

776 lines
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/*
* Copyright (c) 1998 Mark Newton
* Copyright (c) 1994 Christos Zoulas
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <sys/filedesc.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/unistd.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <sys/sysproto.h>
#include <vm/vm.h>
#include <netinet/in.h>
#include <compat/svr4/svr4.h>
#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_proto.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_stat.h>
#include <compat/svr4/svr4_ustat.h>
#include <compat/svr4/svr4_utsname.h>
#include <compat/svr4/svr4_systeminfo.h>
#include <compat/svr4/svr4_socket.h>
#include <compat/svr4/svr4_time.h>
#if defined(NOTYET)
#include "svr4_fuser.h"
#endif
#ifdef sparc
/*
* Solaris-2.4 on the sparc has the old stat call using the new
* stat data structure...
*/
# define SVR4_NO_OSTAT
#endif
struct svr4_ustat_args {
svr4_dev_t dev;
struct svr4_ustat * name;
};
static void bsd_to_svr4_xstat(struct stat *, struct svr4_xstat *);
static void bsd_to_svr4_stat64(struct stat *, struct svr4_stat64 *);
int svr4_ustat(struct thread *, struct svr4_ustat_args *);
static int svr4_to_bsd_pathconf(int);
/*
* SVR4 uses named pipes as named sockets, so we tell programs
* that sockets are named pipes with mode 0
*/
#define BSD_TO_SVR4_MODE(mode) (S_ISSOCK(mode) ? S_IFIFO : (mode))
#ifndef SVR4_NO_OSTAT
static void bsd_to_svr4_stat(struct stat *, struct svr4_stat *);
static void
bsd_to_svr4_stat(st, st4)
struct stat *st;
struct svr4_stat *st4;
{
memset(st4, 0, sizeof(*st4));
st4->st_dev = bsd_to_svr4_odev_t(st->st_dev);
st4->st_ino = st->st_ino;
st4->st_mode = BSD_TO_SVR4_MODE(st->st_mode);
st4->st_nlink = st->st_nlink;
st4->st_uid = st->st_uid;
st4->st_gid = st->st_gid;
st4->st_rdev = bsd_to_svr4_odev_t(st->st_rdev);
st4->st_size = st->st_size;
st4->st_atim = st->st_atimespec.tv_sec;
st4->st_mtim = st->st_mtimespec.tv_sec;
st4->st_ctim = st->st_ctimespec.tv_sec;
}
#endif
static void
bsd_to_svr4_xstat(st, st4)
struct stat *st;
struct svr4_xstat *st4;
{
memset(st4, 0, sizeof(*st4));
st4->st_dev = bsd_to_svr4_dev_t(st->st_dev);
st4->st_ino = st->st_ino;
st4->st_mode = BSD_TO_SVR4_MODE(st->st_mode);
st4->st_nlink = st->st_nlink;
st4->st_uid = st->st_uid;
st4->st_gid = st->st_gid;
st4->st_rdev = bsd_to_svr4_dev_t(st->st_rdev);
st4->st_size = st->st_size;
st4->st_atim = st->st_atimespec;
st4->st_mtim = st->st_mtimespec;
st4->st_ctim = st->st_ctimespec;
st4->st_blksize = st->st_blksize;
st4->st_blocks = st->st_blocks;
strcpy(st4->st_fstype, "unknown");
}
static void
bsd_to_svr4_stat64(st, st4)
struct stat *st;
struct svr4_stat64 *st4;
{
memset(st4, 0, sizeof(*st4));
st4->st_dev = bsd_to_svr4_dev_t(st->st_dev);
st4->st_ino = st->st_ino;
st4->st_mode = BSD_TO_SVR4_MODE(st->st_mode);
st4->st_nlink = st->st_nlink;
st4->st_uid = st->st_uid;
st4->st_gid = st->st_gid;
st4->st_rdev = bsd_to_svr4_dev_t(st->st_rdev);
st4->st_size = st->st_size;
st4->st_atim = st->st_atimespec;
st4->st_mtim = st->st_mtimespec;
st4->st_ctim = st->st_ctimespec;
st4->st_blksize = st->st_blksize;
st4->st_blocks = st->st_blocks;
strcpy(st4->st_fstype, "unknown");
}
int
svr4_sys_stat(td, uap)
struct thread *td;
struct svr4_sys_stat_args *uap;
{
struct stat st;
struct svr4_stat svr4_st;
struct stat_args cup;
int error;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = stat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, ub), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_stat(&st, &svr4_st);
if (S_ISSOCK(st.st_mode))
(void) svr4_add_socket(td, SCARG(uap, path), &st);
if ((error = copyout(&svr4_st, SCARG(uap, ub), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_lstat(td, uap)
register struct thread *td;
struct svr4_sys_lstat_args *uap;
{
struct stat st;
struct svr4_stat svr4_st;
struct lstat_args cup;
int error;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = lstat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, ub), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_stat(&st, &svr4_st);
if (S_ISSOCK(st.st_mode))
(void) svr4_add_socket(td, SCARG(uap, path), &st);
if ((error = copyout(&svr4_st, SCARG(uap, ub), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_fstat(td, uap)
register struct thread *td;
struct svr4_sys_fstat_args *uap;
{
struct stat st;
struct svr4_stat svr4_st;
struct fstat_args cup;
int error;
caddr_t sg = stackgap_init();
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, sb) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = fstat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, sb), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_stat(&st, &svr4_st);
if ((error = copyout(&svr4_st, SCARG(uap, sb), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_xstat(td, uap)
register struct thread *td;
struct svr4_sys_xstat_args *uap;
{
struct stat st;
struct svr4_xstat svr4_st;
struct stat_args cup;
int error;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = stat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, ub), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_xstat(&st, &svr4_st);
#if defined(SOCKET_NOTYET)
if (S_ISSOCK(st.st_mode))
(void) svr4_add_socket(td, SCARG(uap, path), &st);
#endif
if ((error = copyout(&svr4_st, SCARG(uap, ub), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_lxstat(td, uap)
register struct thread *td;
struct svr4_sys_lxstat_args *uap;
{
struct stat st;
struct svr4_xstat svr4_st;
struct lstat_args cup;
int error;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = lstat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, ub), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_xstat(&st, &svr4_st);
#if defined(SOCKET_NOTYET)
if (S_ISSOCK(st.st_mode))
(void) svr4_add_socket(td, SCARG(uap, path), &st);
#endif
if ((error = copyout(&svr4_st, SCARG(uap, ub), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_fxstat(td, uap)
register struct thread *td;
struct svr4_sys_fxstat_args *uap;
{
struct stat st;
struct svr4_xstat svr4_st;
struct fstat_args cup;
int error;
caddr_t sg = stackgap_init();
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, sb) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = fstat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, sb), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_xstat(&st, &svr4_st);
if ((error = copyout(&svr4_st, SCARG(uap, sb), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_stat64(td, uap)
register struct thread *td;
struct svr4_sys_stat64_args *uap;
{
struct stat st;
struct svr4_stat64 svr4_st;
struct stat_args cup;
int error;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = stat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, ub), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_stat64(&st, &svr4_st);
if (S_ISSOCK(st.st_mode))
(void) svr4_add_socket(td, SCARG(uap, path), &st);
if ((error = copyout(&svr4_st, SCARG(uap, sb), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_lstat64(td, uap)
register struct thread *td;
struct svr4_sys_lstat64_args *uap;
{
struct stat st;
struct svr4_stat64 svr4_st;
struct stat_args cup;
int error;
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, (char *) SCARG(uap, path));
SCARG(&cup, path) = SCARG(uap, path);
SCARG(&cup, ub) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = lstat(td, (struct lstat_args *)&cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, ub), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_stat64(&st, &svr4_st);
if (S_ISSOCK(st.st_mode))
(void) svr4_add_socket(td, SCARG(uap, path), &st);
if ((error = copyout(&svr4_st, SCARG(uap, sb), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_sys_fstat64(td, uap)
register struct thread *td;
struct svr4_sys_fstat64_args *uap;
{
struct stat st;
struct svr4_stat64 svr4_st;
struct fstat_args cup;
int error;
caddr_t sg = stackgap_init();
SCARG(&cup, fd) = SCARG(uap, fd);
SCARG(&cup, sb) = stackgap_alloc(&sg, sizeof(struct stat));
if ((error = fstat(td, &cup)) != 0)
return error;
if ((error = copyin(SCARG(&cup, sb), &st, sizeof st)) != 0)
return error;
bsd_to_svr4_stat64(&st, &svr4_st);
if ((error = copyout(&svr4_st, SCARG(uap, sb), sizeof svr4_st)) != 0)
return error;
return 0;
}
int
svr4_ustat(td, uap)
register struct thread *td;
struct svr4_ustat_args *uap;
{
struct svr4_ustat us;
int error;
memset(&us, 0, sizeof us);
/*
* XXX: should set f_tfree and f_tinode at least
* How do we translate dev -> fstat? (and then to svr4_ustat)
*/
if ((error = copyout(&us, SCARG(uap, name), sizeof us)) != 0)
return (error);
return 0;
}
/*extern char ostype[], hostname[], osrelease[], version[], machine[];*/
int
svr4_sys_uname(td, uap)
register struct thread *td;
struct svr4_sys_uname_args *uap;
{
struct svr4_utsname sut;
memset(&sut, 0, sizeof(sut));
strncpy(sut.sysname, ostype, sizeof(sut.sysname));
sut.sysname[sizeof(sut.sysname) - 1] = '\0';
getcredhostname(td->td_ucred, sut.nodename, sizeof(sut.nodename));
strncpy(sut.release, osrelease, sizeof(sut.release));
sut.release[sizeof(sut.release) - 1] = '\0';
strncpy(sut.version, version, sizeof(sut.version));
sut.version[sizeof(sut.version) - 1] = '\0';
strncpy(sut.machine, machine, sizeof(sut.machine));
sut.machine[sizeof(sut.machine) - 1] = '\0';
return copyout((caddr_t) &sut, (caddr_t) SCARG(uap, name),
sizeof(struct svr4_utsname));
}
int
svr4_sys_systeminfo(td, uap)
struct thread *td;
struct svr4_sys_systeminfo_args *uap;
{
char *str = NULL;
int error = 0;
register_t *retval = td->td_retval;
size_t len = 0;
char buf[1]; /* XXX NetBSD uses 256, but that seems
like awfully excessive kstack usage
for an empty string... */
u_int rlen = SCARG(uap, len);
switch (SCARG(uap, what)) {
case SVR4_SI_SYSNAME:
str = ostype;
break;
case SVR4_SI_HOSTNAME:
str = hostname;
break;
case SVR4_SI_RELEASE:
str = osrelease;
break;
case SVR4_SI_VERSION:
str = version;
break;
case SVR4_SI_MACHINE:
str = machine;
break;
case SVR4_SI_ARCHITECTURE:
str = machine;
break;
case SVR4_SI_HW_SERIAL:
str = "0";
break;
case SVR4_SI_HW_PROVIDER:
str = ostype;
break;
case SVR4_SI_SRPC_DOMAIN:
str = domainname;
break;
case SVR4_SI_PLATFORM:
#ifdef __i386__
str = "i86pc";
#else
str = "unknown";
#endif
break;
case SVR4_SI_KERB_REALM:
str = "unsupported";
break;
#if defined(WHY_DOES_AN_EMULATOR_WANT_TO_SET_HOSTNAMES)
case SVR4_SI_SET_HOSTNAME:
if ((error = suser(td)) != 0)
return error;
name = KERN_HOSTNAME;
return kern_sysctl(&name, 1, 0, 0, SCARG(uap, buf), rlen, td);
case SVR4_SI_SET_SRPC_DOMAIN:
if ((error = suser(td)) != 0)
return error;
name = KERN_NISDOMAINNAME;
return kern_sysctl(&name, 1, 0, 0, SCARG(uap, buf), rlen, td);
#else
case SVR4_SI_SET_HOSTNAME:
case SVR4_SI_SET_SRPC_DOMAIN:
/* FALLTHROUGH */
#endif
case SVR4_SI_SET_KERB_REALM:
return 0;
default:
DPRINTF(("Bad systeminfo command %d\n", SCARG(uap, what)));
return ENOSYS;
}
if (str) {
len = strlen(str) + 1;
if (len > rlen)
len = rlen;
if (SCARG(uap, buf)) {
error = copyout(str, SCARG(uap, buf), len);
if (error)
return error;
/* make sure we are NULL terminated */
buf[0] = '\0';
error = copyout(buf, &(SCARG(uap, buf)[len - 1]), 1);
}
else
error = 0;
}
/* XXX NetBSD has hostname setting stuff here. Why would an emulator
want to do that? */
*retval = len;
return error;
}
int
svr4_sys_utssys(td, uap)
register struct thread *td;
struct svr4_sys_utssys_args *uap;
{
switch (SCARG(uap, sel)) {
case 0: /* uname(2) */
{
struct svr4_sys_uname_args ua;
SCARG(&ua, name) = SCARG(uap, a1);
return svr4_sys_uname(td, &ua);
}
case 2: /* ustat(2) */
{
struct svr4_ustat_args ua;
SCARG(&ua, dev) = (svr4_dev_t) SCARG(uap, a2);
SCARG(&ua, name) = SCARG(uap, a1);
return svr4_ustat(td, &ua);
}
case 3: /* fusers(2) */
return ENOSYS;
default:
return ENOSYS;
}
return ENOSYS;
}
int
svr4_sys_utime(td, uap)
register struct thread *td;
struct svr4_sys_utime_args *uap;
{
struct svr4_utimbuf ub;
struct timeval tbuf[2];
struct utimes_args ap;
int error;
caddr_t sg = stackgap_init();
void *ttp;
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(&ap, path) = SCARG(uap, path);
if (SCARG(uap, ubuf) != NULL) {
if ((error = copyin(SCARG(uap, ubuf), &ub, sizeof(ub))) != 0)
return error;
tbuf[0].tv_sec = ub.actime;
tbuf[0].tv_usec = 0;
tbuf[1].tv_sec = ub.modtime;
tbuf[1].tv_usec = 0;
ttp = stackgap_alloc(&sg, sizeof(tbuf));
error = copyout(tbuf, ttp, sizeof(tbuf));
if (error)
return error;
SCARG(&ap, tptr) = ttp;
}
else
SCARG(&ap, tptr) = NULL;
return utimes(td, &ap);
}
int
svr4_sys_utimes(td, uap)
register struct thread *td;
struct svr4_sys_utimes_args *uap;
{
caddr_t sg = stackgap_init();
CHECKALTEXIST(td, &sg, SCARG(uap, path));
return utimes(td, (struct utimes_args *)uap);
}
static int
svr4_to_bsd_pathconf(name)
int name;
{
switch (name) {
case SVR4_PC_LINK_MAX:
return _PC_LINK_MAX;
case SVR4_PC_MAX_CANON:
return _PC_MAX_CANON;
case SVR4_PC_MAX_INPUT:
return _PC_MAX_INPUT;
case SVR4_PC_NAME_MAX:
return _PC_NAME_MAX;
case SVR4_PC_PATH_MAX:
return _PC_PATH_MAX;
case SVR4_PC_PIPE_BUF:
return _PC_PIPE_BUF;
case SVR4_PC_NO_TRUNC:
return _PC_NO_TRUNC;
case SVR4_PC_VDISABLE:
return _PC_VDISABLE;
case SVR4_PC_CHOWN_RESTRICTED:
return _PC_CHOWN_RESTRICTED;
case SVR4_PC_SYNC_IO:
#if defined(_PC_SYNC_IO)
return _PC_SYNC_IO;
#else
return 0;
#endif
case SVR4_PC_ASYNC_IO:
case SVR4_PC_PRIO_IO:
/* Not supported */
return 0;
default:
/* Invalid */
return -1;
}
}
int
svr4_sys_pathconf(td, uap)
register struct thread *td;
struct svr4_sys_pathconf_args *uap;
{
caddr_t sg = stackgap_init();
register_t *retval = td->td_retval;
CHECKALTEXIST(td, &sg, SCARG(uap, path));
SCARG(uap, name) = svr4_to_bsd_pathconf(SCARG(uap, name));
switch (SCARG(uap, name)) {
case -1:
*retval = -1;
return EINVAL;
case 0:
*retval = 0;
return 0;
default:
return pathconf(td, (struct pathconf_args *)uap);
}
}
int
svr4_sys_fpathconf(td, uap)
register struct thread *td;
struct svr4_sys_fpathconf_args *uap;
{
register_t *retval = td->td_retval;
SCARG(uap, name) = svr4_to_bsd_pathconf(SCARG(uap, name));
switch (SCARG(uap, name)) {
case -1:
*retval = -1;
return EINVAL;
case 0:
*retval = 0;
return 0;
default:
return fpathconf(td, (struct fpathconf_args *)uap);
}
}
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