freebsd-nq/sys/i386/ibcs2/ibcs2_misc.c

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2005-01-06 23:22:04 +00:00
/*-
* Copyright (c) 1995 Steven Wallace
* Copyright (c) 1994, 1995 Scott Bartram
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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.
*
* from: Header: sun_misc.c,v 1.16 93/04/07 02:46:27 torek Exp
*
* @(#)sun_misc.c 8.1 (Berkeley) 6/18/93
*/
2003-06-02 06:48:51 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* IBCS2 compatibility module.
*
* IBCS2 system calls that are implemented differently in BSD are
* handled here.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/dirent.h>
#include <sys/fcntl.h>
#include <sys/filedesc.h>
#include <sys/imgact.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/file.h> /* Must come after sys/malloc.h */
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/priv.h>
#include <sys/reboot.h>
#include <sys/resourcevar.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/time.h>
#include <sys/times.h>
#include <sys/vnode.h>
#include <sys/wait.h>
#include <machine/cpu.h>
#include <i386/ibcs2/ibcs2_dirent.h>
#include <i386/ibcs2/ibcs2_signal.h>
#include <i386/ibcs2/ibcs2_proto.h>
#include <i386/ibcs2/ibcs2_unistd.h>
#include <i386/ibcs2/ibcs2_util.h>
#include <i386/ibcs2/ibcs2_utime.h>
#include <i386/ibcs2/ibcs2_xenix.h>
#include <security/mac/mac_framework.h>
int
ibcs2_ulimit(td, uap)
struct thread *td;
struct ibcs2_ulimit_args *uap;
{
struct rlimit rl;
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
struct proc *p;
int error;
#define IBCS2_GETFSIZE 1
#define IBCS2_SETFSIZE 2
#define IBCS2_GETPSIZE 3
#define IBCS2_GETDTABLESIZE 4
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
p = td->td_proc;
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switch (uap->cmd) {
case IBCS2_GETFSIZE:
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
PROC_LOCK(p);
td->td_retval[0] = lim_cur(p, RLIMIT_FSIZE);
PROC_UNLOCK(p);
if (td->td_retval[0] == -1)
td->td_retval[0] = 0x7fffffff;
return 0;
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
case IBCS2_SETFSIZE:
PROC_LOCK(p);
rl.rlim_max = lim_max(p, RLIMIT_FSIZE);
PROC_UNLOCK(p);
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rl.rlim_cur = uap->newlimit;
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
error = kern_setrlimit(td, RLIMIT_FSIZE, &rl);
if (!error) {
PROC_LOCK(p);
td->td_retval[0] = lim_cur(p, RLIMIT_FSIZE);
PROC_UNLOCK(p);
} else {
DPRINTF(("failed "));
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
}
return error;
case IBCS2_GETPSIZE:
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
PROC_LOCK(p);
td->td_retval[0] = lim_cur(p, RLIMIT_RSS); /* XXX */
PROC_UNLOCK(p);
return 0;
case IBCS2_GETDTABLESIZE:
uap->cmd = IBCS2_SC_OPEN_MAX;
return ibcs2_sysconf(td, (struct ibcs2_sysconf_args *)uap);
default:
return ENOSYS;
}
}
#define IBCS2_WSTOPPED 0177
#define IBCS2_STOPCODE(sig) ((sig) << 8 | IBCS2_WSTOPPED)
int
ibcs2_wait(td, uap)
struct thread *td;
struct ibcs2_wait_args *uap;
{
int error, options, status;
int *statusp;
pid_t pid;
struct trapframe *tf = td->td_frame;
if ((tf->tf_eflags & (PSL_Z|PSL_PF|PSL_N|PSL_V))
== (PSL_Z|PSL_PF|PSL_N|PSL_V)) {
/* waitpid */
pid = uap->a1;
statusp = (int *)uap->a2;
options = uap->a3;
} else {
/* wait */
pid = WAIT_ANY;
statusp = (int *)uap->a1;
options = 0;
}
error = kern_wait(td, pid, &status, options, NULL);
if (error)
return error;
if (statusp) {
/*
* Convert status/signal result.
*/
if (WIFSTOPPED(status)) {
if (WSTOPSIG(status) <= 0 ||
WSTOPSIG(status) > IBCS2_SIGTBLSZ)
return (EINVAL);
status =
IBCS2_STOPCODE(bsd_to_ibcs2_sig[_SIG_IDX(WSTOPSIG(status))]);
} else if (WIFSIGNALED(status)) {
if (WTERMSIG(status) <= 0 ||
WTERMSIG(status) > IBCS2_SIGTBLSZ)
return (EINVAL);
status = bsd_to_ibcs2_sig[_SIG_IDX(WTERMSIG(status))];
}
/* else exit status -- identical */
/* record result/status */
td->td_retval[1] = status;
return copyout(&status, statusp, sizeof(status));
}
return 0;
}
int
ibcs2_execv(td, uap)
struct thread *td;
struct ibcs2_execv_args *uap;
{
struct image_args eargs;
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = exec_copyin_args(&eargs, path, UIO_SYSSPACE, uap->argp, NULL);
free(path, M_TEMP);
if (error == 0)
error = kern_execve(td, &eargs, NULL);
return (error);
}
int
ibcs2_execve(td, uap)
struct thread *td;
struct ibcs2_execve_args *uap;
{
struct image_args eargs;
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = exec_copyin_args(&eargs, path, UIO_SYSSPACE, uap->argp,
uap->envp);
free(path, M_TEMP);
if (error == 0)
error = kern_execve(td, &eargs, NULL);
return (error);
}
int
ibcs2_umount(td, uap)
struct thread *td;
struct ibcs2_umount_args *uap;
{
struct unmount_args um;
2002-12-14 01:56:26 +00:00
um.path = uap->name;
um.flags = 0;
return unmount(td, &um);
}
int
ibcs2_mount(td, uap)
struct thread *td;
struct ibcs2_mount_args *uap;
{
#ifdef notyet
2002-12-14 01:56:26 +00:00
int oflags = uap->flags, nflags, error;
char fsname[MFSNAMELEN];
if (oflags & (IBCS2_MS_NOSUB | IBCS2_MS_SYS5))
return (EINVAL);
if ((oflags & IBCS2_MS_NEWTYPE) == 0)
return (EINVAL);
nflags = 0;
if (oflags & IBCS2_MS_RDONLY)
nflags |= MNT_RDONLY;
if (oflags & IBCS2_MS_NOSUID)
nflags |= MNT_NOSUID;
if (oflags & IBCS2_MS_REMOUNT)
nflags |= MNT_UPDATE;
2002-12-14 01:56:26 +00:00
uap->flags = nflags;
2002-12-14 01:56:26 +00:00
if (error = copyinstr((caddr_t)uap->type, fsname, sizeof fsname,
(u_int *)0))
return (error);
if (strcmp(fsname, "4.2") == 0) {
2002-12-14 01:56:26 +00:00
uap->type = (caddr_t)STACK_ALLOC();
if (error = copyout("ufs", uap->type, sizeof("ufs")))
return (error);
} else if (strcmp(fsname, "nfs") == 0) {
struct ibcs2_nfs_args sna;
struct sockaddr_in sain;
struct nfs_args na;
struct sockaddr sa;
2002-12-14 01:56:26 +00:00
if (error = copyin(uap->data, &sna, sizeof sna))
return (error);
if (error = copyin(sna.addr, &sain, sizeof sain))
return (error);
bcopy(&sain, &sa, sizeof sa);
sa.sa_len = sizeof(sain);
2002-12-14 01:56:26 +00:00
uap->data = (caddr_t)STACK_ALLOC();
na.addr = (struct sockaddr *)((int)uap->data + sizeof na);
na.sotype = SOCK_DGRAM;
na.proto = IPPROTO_UDP;
na.fh = (nfsv2fh_t *)sna.fh;
na.flags = sna.flags;
na.wsize = sna.wsize;
na.rsize = sna.rsize;
na.timeo = sna.timeo;
na.retrans = sna.retrans;
na.hostname = sna.hostname;
if (error = copyout(&sa, na.addr, sizeof sa))
return (error);
2002-12-14 01:56:26 +00:00
if (error = copyout(&na, uap->data, sizeof na))
return (error);
}
return (mount(td, uap));
#else
return EINVAL;
#endif
}
/*
* Read iBCS2-style directory entries. We suck them into kernel space so
* that they can be massaged before being copied out to user code. Like
* SunOS, we squish out `empty' entries.
*
* This is quite ugly, but what do you expect from compatibility code?
*/
int
ibcs2_getdents(td, uap)
struct thread *td;
register struct ibcs2_getdents_args *uap;
{
register struct vnode *vp;
register caddr_t inp, buf; /* BSD-format */
register int len, reclen; /* BSD-format */
register caddr_t outp; /* iBCS2-format */
register int resid; /* iBCS2-format */
struct file *fp;
struct uio auio;
struct iovec aiov;
struct ibcs2_dirent idb;
off_t off; /* true file offset */
int buflen, error, eofflag, vfslocked;
u_long *cookies = NULL, *cookiep;
int ncookies;
#define BSD_DIRENT(cp) ((struct dirent *)(cp))
#define IBCS2_RECLEN(reclen) (reclen + sizeof(u_short))
2002-12-14 01:56:26 +00:00
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
return (error);
if ((fp->f_flag & FREAD) == 0) {
fdrop(fp, td);
return (EBADF);
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) { /* XXX vnode readdir op should do this */
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
return (EINVAL);
}
off = fp->f_offset;
#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */
2002-12-14 01:56:26 +00:00
buflen = max(DIRBLKSIZ, uap->nbytes);
buflen = min(buflen, MAXBSIZE);
buf = malloc(buflen, M_TEMP, M_WAITOK);
vn_lock(vp, LK_SHARED | LK_RETRY);
again:
aiov.iov_base = buf;
aiov.iov_len = buflen;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_td = td;
auio.uio_resid = buflen;
auio.uio_offset = off;
if (cookies) {
free(cookies, M_TEMP);
cookies = NULL;
}
#ifdef MAC
error = mac_vnode_check_readdir(td->td_ucred, vp);
if (error)
goto out;
#endif
/*
* First we read into the malloc'ed buffer, then
* we massage it into user space, one record at a time.
*/
if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies)) != 0)
goto out;
inp = buf;
2002-12-14 01:56:26 +00:00
outp = uap->buf;
resid = uap->nbytes;
if ((len = buflen - auio.uio_resid) <= 0)
goto eof;
cookiep = cookies;
if (cookies) {
/*
* When using cookies, the vfs has the option of reading from
* a different offset than that supplied (UFS truncates the
* offset to a block boundary to make sure that it never reads
* partway through a directory entry, even if the directory
* has been compacted).
*/
while (len > 0 && ncookies > 0 && *cookiep <= off) {
len -= BSD_DIRENT(inp)->d_reclen;
inp += BSD_DIRENT(inp)->d_reclen;
cookiep++;
ncookies--;
}
}
for (; len > 0; len -= reclen) {
if (cookiep && ncookies == 0)
break;
reclen = BSD_DIRENT(inp)->d_reclen;
if (reclen & 3) {
printf("ibcs2_getdents: reclen=%d\n", reclen);
error = EFAULT;
goto out;
}
if (BSD_DIRENT(inp)->d_fileno == 0) {
inp += reclen; /* it is a hole; squish it out */
if (cookiep) {
off = *cookiep++;
ncookies--;
} else
off += reclen;
continue;
}
if (reclen > len || resid < IBCS2_RECLEN(reclen)) {
/* entry too big for buffer, so just stop */
outp++;
break;
}
/*
* Massage in place to make an iBCS2-shaped dirent (otherwise
* we have to worry about touching user memory outside of
* the copyout() call).
*/
idb.d_ino = (ibcs2_ino_t)BSD_DIRENT(inp)->d_fileno;
idb.d_off = (ibcs2_off_t)off;
idb.d_reclen = (u_short)IBCS2_RECLEN(reclen);
if ((error = copyout((caddr_t)&idb, outp, 10)) != 0 ||
(error = copyout(BSD_DIRENT(inp)->d_name, outp + 10,
BSD_DIRENT(inp)->d_namlen + 1)) != 0)
goto out;
/* advance past this real entry */
if (cookiep) {
off = *cookiep++;
ncookies--;
} else
off += reclen;
inp += reclen;
/* advance output past iBCS2-shaped entry */
outp += IBCS2_RECLEN(reclen);
resid -= IBCS2_RECLEN(reclen);
}
/* if we squished out the whole block, try again */
2002-12-14 01:56:26 +00:00
if (outp == uap->buf)
goto again;
fp->f_offset = off; /* update the vnode offset */
eof:
2002-12-14 01:56:26 +00:00
td->td_retval[0] = uap->nbytes - resid;
out:
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
if (cookies)
free(cookies, M_TEMP);
free(buf, M_TEMP);
return (error);
}
int
ibcs2_read(td, uap)
struct thread *td;
struct ibcs2_read_args *uap;
{
register struct vnode *vp;
register caddr_t inp, buf; /* BSD-format */
register int len, reclen; /* BSD-format */
register caddr_t outp; /* iBCS2-format */
register int resid; /* iBCS2-format */
struct file *fp;
struct uio auio;
struct iovec aiov;
struct ibcs2_direct {
ibcs2_ino_t ino;
char name[14];
} idb;
off_t off; /* true file offset */
int buflen, error, eofflag, size, vfslocked;
u_long *cookies = NULL, *cookiep;
int ncookies;
2002-12-14 01:56:26 +00:00
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0) {
if (error == EINVAL)
return read(td, (struct read_args *)uap);
else
return error;
}
if ((fp->f_flag & FREAD) == 0) {
fdrop(fp, td);
return (EBADF);
}
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
if (vp->v_type != VDIR) {
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
return read(td, (struct read_args *)uap);
}
off = fp->f_offset;
DPRINTF(("ibcs2_read: read directory\n"));
2002-12-14 01:56:26 +00:00
buflen = max(DIRBLKSIZ, uap->nbytes);
buflen = min(buflen, MAXBSIZE);
buf = malloc(buflen, M_TEMP, M_WAITOK);
vn_lock(vp, LK_SHARED | LK_RETRY);
again:
aiov.iov_base = buf;
aiov.iov_len = buflen;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_td = td;
auio.uio_resid = buflen;
auio.uio_offset = off;
if (cookies) {
free(cookies, M_TEMP);
cookies = NULL;
}
#ifdef MAC
error = mac_vnode_check_readdir(td->td_ucred, vp);
if (error)
goto out;
#endif
/*
* First we read into the malloc'ed buffer, then
* we massage it into user space, one record at a time.
*/
if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies)) != 0) {
DPRINTF(("VOP_READDIR failed: %d\n", error));
goto out;
}
inp = buf;
2002-12-14 01:56:26 +00:00
outp = uap->buf;
resid = uap->nbytes;
if ((len = buflen - auio.uio_resid) <= 0)
goto eof;
cookiep = cookies;
if (cookies) {
/*
* When using cookies, the vfs has the option of reading from
* a different offset than that supplied (UFS truncates the
* offset to a block boundary to make sure that it never reads
* partway through a directory entry, even if the directory
* has been compacted).
*/
while (len > 0 && ncookies > 0 && *cookiep <= off) {
len -= BSD_DIRENT(inp)->d_reclen;
inp += BSD_DIRENT(inp)->d_reclen;
cookiep++;
ncookies--;
}
}
for (; len > 0 && resid > 0; len -= reclen) {
if (cookiep && ncookies == 0)
break;
reclen = BSD_DIRENT(inp)->d_reclen;
if (reclen & 3) {
printf("ibcs2_read: reclen=%d\n", reclen);
error = EFAULT;
goto out;
}
if (BSD_DIRENT(inp)->d_fileno == 0) {
inp += reclen; /* it is a hole; squish it out */
if (cookiep) {
off = *cookiep++;
ncookies--;
} else
off += reclen;
continue;
}
if (reclen > len || resid < sizeof(struct ibcs2_direct)) {
/* entry too big for buffer, so just stop */
outp++;
break;
}
/*
* Massage in place to make an iBCS2-shaped dirent (otherwise
* we have to worry about touching user memory outside of
* the copyout() call).
*
* TODO: if length(filename) > 14, then break filename into
* multiple entries and set inode = 0xffff except last
*/
idb.ino = (BSD_DIRENT(inp)->d_fileno > 0xfffe) ? 0xfffe :
BSD_DIRENT(inp)->d_fileno;
(void)copystr(BSD_DIRENT(inp)->d_name, idb.name, 14, &size);
bzero(idb.name + size, 14 - size);
if ((error = copyout(&idb, outp, sizeof(struct ibcs2_direct))) != 0)
goto out;
/* advance past this real entry */
if (cookiep) {
off = *cookiep++;
ncookies--;
} else
off += reclen;
inp += reclen;
/* advance output past iBCS2-shaped entry */
outp += sizeof(struct ibcs2_direct);
resid -= sizeof(struct ibcs2_direct);
}
/* if we squished out the whole block, try again */
2002-12-14 01:56:26 +00:00
if (outp == uap->buf)
goto again;
fp->f_offset = off; /* update the vnode offset */
eof:
2002-12-14 01:56:26 +00:00
td->td_retval[0] = uap->nbytes - resid;
out:
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
fdrop(fp, td);
if (cookies)
free(cookies, M_TEMP);
free(buf, M_TEMP);
return (error);
}
int
ibcs2_mknod(td, uap)
struct thread *td;
struct ibcs2_mknod_args *uap;
{
char *path;
int error;
CHECKALTCREAT(td, uap->path, &path);
if (S_ISFIFO(uap->mode))
error = kern_mkfifo(td, path, UIO_SYSSPACE, uap->mode);
else
error = kern_mknod(td, path, UIO_SYSSPACE, uap->mode, uap->dev);
free(path, M_TEMP);
return (error);
}
int
ibcs2_getgroups(td, uap)
struct thread *td;
struct ibcs2_getgroups_args *uap;
{
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
ibcs2_gid_t *iset;
gid_t *gp;
u_int i, ngrp;
int error;
if (uap->gidsetsize < 0)
return (EINVAL);
ngrp = MIN(uap->gidsetsize, NGROUPS);
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
gp = malloc(ngrp * sizeof(*gp), M_TEMP, M_WAITOK);
error = kern_getgroups(td, &ngrp, gp);
if (error)
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
goto out;
if (uap->gidsetsize > 0) {
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
iset = malloc(ngrp * sizeof(*iset), M_TEMP, M_WAITOK);
for (i = 0; i < ngrp; i++)
iset[i] = (ibcs2_gid_t)gp[i];
error = copyout(iset, uap->gidset, ngrp * sizeof(ibcs2_gid_t));
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
free(iset, M_TEMP);
}
if (error == 0)
td->td_retval[0] = ngrp;
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
out:
free(gp, M_TEMP);
return (error);
}
int
ibcs2_setgroups(td, uap)
struct thread *td;
struct ibcs2_setgroups_args *uap;
{
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
ibcs2_gid_t *iset;
gid_t *gp;
int error, i;
if (uap->gidsetsize < 0 || uap->gidsetsize > NGROUPS)
return (EINVAL);
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
if (uap->gidsetsize && uap->gidset == NULL)
return (EINVAL);
gp = malloc(uap->gidsetsize * sizeof(*gp), M_TEMP, M_WAITOK);
if (uap->gidsetsize) {
iset = malloc(uap->gidsetsize * sizeof(*iset), M_TEMP, M_WAITOK);
error = copyin(uap->gidset, iset, sizeof(ibcs2_gid_t) *
uap->gidsetsize);
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
if (error) {
free(iset, M_TEMP);
goto out;
}
for (i = 0; i < uap->gidsetsize; i++)
gp[i] = (gid_t)iset[i];
}
Rework the credential code to support larger values of NGROUPS and NGROUPS_MAX, eliminate ABI dependencies on them, and raise the to 1024 and 1023 respectively. (Previously they were equal, but under a close reading of POSIX, NGROUPS_MAX was defined to be too large by 1 since it is the number of supplemental groups, not total number of groups.) The bulk of the change consists of converting the struct ucred member cr_groups from a static array to a pointer. Do the equivalent in kinfo_proc. Introduce new interfaces crcopysafe() and crsetgroups() for duplicating a process credential before modifying it and for setting group lists respectively. Both interfaces take care for the details of allocating groups array. crsetgroups() takes care of truncating the group list to the current maximum (NGROUPS) if necessary. In the future, crsetgroups() may be responsible for insuring invariants such as sorting the supplemental groups to allow groupmember() to be implemented as a binary search. Because we can not change struct xucred without breaking application ABIs, we leave it alone and introduce a new XU_NGROUPS value which is always 16 and is to be used or NGRPS as appropriate for things such as NFS which need to use no more than 16 groups. When feasible, truncate the group list rather than generating an error. Minor changes: - Reduce the number of hand rolled versions of groupmember(). - Do not assign to both cr_gid and cr_groups[0]. - Modify ipfw to cache ucreds instead of part of their contents since they are immutable once referenced by more than one entity. Submitted by: Isilon Systems (initial implementation) X-MFC after: never PR: bin/113398 kern/133867
2009-06-19 17:10:35 +00:00
error = kern_setgroups(td, uap->gidsetsize, gp);
out:
free(gp, M_TEMP);
return (error);
}
int
ibcs2_setuid(td, uap)
struct thread *td;
struct ibcs2_setuid_args *uap;
{
struct setuid_args sa;
2002-12-14 01:56:26 +00:00
sa.uid = (uid_t)uap->uid;
return setuid(td, &sa);
}
int
ibcs2_setgid(td, uap)
struct thread *td;
struct ibcs2_setgid_args *uap;
{
struct setgid_args sa;
2002-12-14 01:56:26 +00:00
sa.gid = (gid_t)uap->gid;
return setgid(td, &sa);
}
int
ibcs2_time(td, uap)
struct thread *td;
struct ibcs2_time_args *uap;
{
struct timeval tv;
microtime(&tv);
td->td_retval[0] = tv.tv_sec;
2002-12-14 01:56:26 +00:00
if (uap->tp)
return copyout((caddr_t)&tv.tv_sec, (caddr_t)uap->tp,
sizeof(ibcs2_time_t));
else
return 0;
}
int
ibcs2_pathconf(td, uap)
struct thread *td;
struct ibcs2_pathconf_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
2002-12-14 01:56:26 +00:00
uap->name++; /* iBCS2 _PC_* defines are offset by one */
error = kern_pathconf(td, path, UIO_SYSSPACE, uap->name, FOLLOW);
free(path, M_TEMP);
return (error);
}
int
ibcs2_fpathconf(td, uap)
struct thread *td;
struct ibcs2_fpathconf_args *uap;
{
2002-12-14 01:56:26 +00:00
uap->name++; /* iBCS2 _PC_* defines are offset by one */
return fpathconf(td, (struct fpathconf_args *)uap);
}
int
ibcs2_sysconf(td, uap)
struct thread *td;
struct ibcs2_sysconf_args *uap;
{
int mib[2], value, len, error;
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
2004-02-04 21:52:57 +00:00
struct proc *p;
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
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p = td->td_proc;
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switch(uap->name) {
case IBCS2_SC_ARG_MAX:
mib[1] = KERN_ARGMAX;
break;
case IBCS2_SC_CHILD_MAX:
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
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PROC_LOCK(p);
td->td_retval[0] = lim_cur(td->td_proc, RLIMIT_NPROC);
PROC_UNLOCK(p);
return 0;
case IBCS2_SC_CLK_TCK:
td->td_retval[0] = hz;
return 0;
case IBCS2_SC_NGROUPS_MAX:
mib[1] = KERN_NGROUPS;
break;
case IBCS2_SC_OPEN_MAX:
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
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PROC_LOCK(p);
td->td_retval[0] = lim_cur(td->td_proc, RLIMIT_NOFILE);
PROC_UNLOCK(p);
return 0;
case IBCS2_SC_JOB_CONTROL:
mib[1] = KERN_JOB_CONTROL;
break;
case IBCS2_SC_SAVED_IDS:
mib[1] = KERN_SAVED_IDS;
break;
case IBCS2_SC_VERSION:
mib[1] = KERN_POSIX1;
break;
case IBCS2_SC_PASS_MAX:
td->td_retval[0] = 128; /* XXX - should we create PASS_MAX ? */
return 0;
case IBCS2_SC_XOPEN_VERSION:
td->td_retval[0] = 2; /* XXX: What should that be? */
return 0;
default:
return EINVAL;
}
mib[0] = CTL_KERN;
len = sizeof(value);
error = kernel_sysctl(td, mib, 2, &value, &len, NULL, 0, NULL, 0);
Locking for the per-process resource limits structure. - struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64
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if (error)
return error;
td->td_retval[0] = value;
return 0;
}
int
ibcs2_alarm(td, uap)
struct thread *td;
struct ibcs2_alarm_args *uap;
{
struct itimerval itv, oitv;
int error;
timevalclear(&itv.it_interval);
itv.it_value.tv_sec = uap->sec;
itv.it_value.tv_usec = 0;
error = kern_setitimer(td, ITIMER_REAL, &itv, &oitv);
if (error)
return (error);
if (oitv.it_value.tv_usec != 0)
oitv.it_value.tv_sec++;
td->td_retval[0] = oitv.it_value.tv_sec;
return (0);
}
int
ibcs2_times(td, uap)
struct thread *td;
struct ibcs2_times_args *uap;
{
struct rusage ru;
struct timeval t;
struct tms tms;
int error;
#define CONVTCK(r) (r.tv_sec * hz + r.tv_usec / (1000000 / hz))
error = kern_getrusage(td, RUSAGE_SELF, &ru);
if (error)
return (error);
tms.tms_utime = CONVTCK(ru.ru_utime);
tms.tms_stime = CONVTCK(ru.ru_stime);
error = kern_getrusage(td, RUSAGE_CHILDREN, &ru);
if (error)
return (error);
tms.tms_cutime = CONVTCK(ru.ru_utime);
tms.tms_cstime = CONVTCK(ru.ru_stime);
microtime(&t);
td->td_retval[0] = CONVTCK(t);
return (copyout(&tms, uap->tp, sizeof(struct tms)));
}
int
ibcs2_stime(td, uap)
struct thread *td;
struct ibcs2_stime_args *uap;
{
struct timeval tv;
long secs;
int error;
error = copyin(uap->timep, &secs, sizeof(long));
if (error)
return (error);
tv.tv_sec = secs;
tv.tv_usec = 0;
error = kern_settimeofday(td, &tv, NULL);
if (error)
error = EPERM;
return (error);
}
int
ibcs2_utime(td, uap)
struct thread *td;
struct ibcs2_utime_args *uap;
{
struct ibcs2_utimbuf ubuf;
struct timeval tbuf[2], *tp;
char *path;
int error;
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if (uap->buf) {
error = copyin(uap->buf, &ubuf, sizeof(ubuf));
if (error)
return (error);
tbuf[0].tv_sec = ubuf.actime;
tbuf[0].tv_usec = 0;
tbuf[1].tv_sec = ubuf.modtime;
tbuf[1].tv_usec = 0;
tp = tbuf;
} else
tp = NULL;
CHECKALTEXIST(td, uap->path, &path);
error = kern_utimes(td, path, UIO_SYSSPACE, tp, UIO_SYSSPACE);
free(path, M_TEMP);
return (error);
}
int
ibcs2_nice(td, uap)
struct thread *td;
struct ibcs2_nice_args *uap;
{
int error;
struct setpriority_args sa;
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sa.which = PRIO_PROCESS;
sa.who = 0;
sa.prio = td->td_proc->p_nice + uap->incr;
if ((error = setpriority(td, &sa)) != 0)
return EPERM;
td->td_retval[0] = td->td_proc->p_nice;
return 0;
}
/*
* iBCS2 getpgrp, setpgrp, setsid, and setpgid
*/
int
ibcs2_pgrpsys(td, uap)
struct thread *td;
struct ibcs2_pgrpsys_args *uap;
{
struct proc *p = td->td_proc;
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switch (uap->type) {
case 0: /* getpgrp */
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PROC_LOCK(p);
td->td_retval[0] = p->p_pgrp->pg_id;
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PROC_UNLOCK(p);
return 0;
case 1: /* setpgrp */
{
struct setpgid_args sa;
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sa.pid = 0;
sa.pgid = 0;
setpgid(td, &sa);
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PROC_LOCK(p);
td->td_retval[0] = p->p_pgrp->pg_id;
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PROC_UNLOCK(p);
return 0;
}
case 2: /* setpgid */
{
struct setpgid_args sa;
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sa.pid = uap->pid;
sa.pgid = uap->pgid;
return setpgid(td, &sa);
}
case 3: /* setsid */
return setsid(td, NULL);
default:
return EINVAL;
}
}
/*
* XXX - need to check for nested calls
*/
int
ibcs2_plock(td, uap)
struct thread *td;
struct ibcs2_plock_args *uap;
{
int error;
#define IBCS2_UNLOCK 0
#define IBCS2_PROCLOCK 1
#define IBCS2_TEXTLOCK 2
#define IBCS2_DATALOCK 4
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switch(uap->cmd) {
case IBCS2_UNLOCK:
error = priv_check(td, PRIV_VM_MUNLOCK);
if (error)
return (error);
/* XXX - TODO */
return (0);
case IBCS2_PROCLOCK:
case IBCS2_TEXTLOCK:
case IBCS2_DATALOCK:
error = priv_check(td, PRIV_VM_MLOCK);
if (error)
return (error);
/* XXX - TODO */
return 0;
}
return EINVAL;
}
int
ibcs2_uadmin(td, uap)
struct thread *td;
struct ibcs2_uadmin_args *uap;
{
#define SCO_A_REBOOT 1
#define SCO_A_SHUTDOWN 2
#define SCO_A_REMOUNT 4
#define SCO_A_CLOCK 8
#define SCO_A_SETCONFIG 128
#define SCO_A_GETDEV 130
#define SCO_AD_HALT 0
#define SCO_AD_BOOT 1
#define SCO_AD_IBOOT 2
#define SCO_AD_PWRDOWN 3
#define SCO_AD_PWRNAP 4
#define SCO_AD_PANICBOOT 1
#define SCO_AD_GETBMAJ 0
#define SCO_AD_GETCMAJ 1
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switch(uap->cmd) {
case SCO_A_REBOOT:
case SCO_A_SHUTDOWN:
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switch(uap->func) {
struct reboot_args r;
case SCO_AD_HALT:
case SCO_AD_PWRDOWN:
case SCO_AD_PWRNAP:
r.opt = RB_HALT;
return (reboot(td, &r));
case SCO_AD_BOOT:
case SCO_AD_IBOOT:
r.opt = RB_AUTOBOOT;
return (reboot(td, &r));
}
return EINVAL;
case SCO_A_REMOUNT:
case SCO_A_CLOCK:
case SCO_A_SETCONFIG:
return 0;
case SCO_A_GETDEV:
return EINVAL; /* XXX - TODO */
}
return EINVAL;
}
int
ibcs2_sysfs(td, uap)
struct thread *td;
struct ibcs2_sysfs_args *uap;
{
#define IBCS2_GETFSIND 1
#define IBCS2_GETFSTYP 2
#define IBCS2_GETNFSTYP 3
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switch(uap->cmd) {
case IBCS2_GETFSIND:
case IBCS2_GETFSTYP:
case IBCS2_GETNFSTYP:
break;
}
return EINVAL; /* XXX - TODO */
}
int
ibcs2_unlink(td, uap)
struct thread *td;
struct ibcs2_unlink_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = kern_unlink(td, path, UIO_SYSSPACE);
free(path, M_TEMP);
return (error);
}
int
ibcs2_chdir(td, uap)
struct thread *td;
struct ibcs2_chdir_args *uap;
{
char *path;
int error;
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CHECKALTEXIST(td, uap->path, &path);
error = kern_chdir(td, path, UIO_SYSSPACE);
free(path, M_TEMP);
return (error);
}
int
ibcs2_chmod(td, uap)
struct thread *td;
struct ibcs2_chmod_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = kern_chmod(td, path, UIO_SYSSPACE, uap->mode);
free(path, M_TEMP);
return (error);
}
int
ibcs2_chown(td, uap)
struct thread *td;
struct ibcs2_chown_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = kern_chown(td, path, UIO_SYSSPACE, uap->uid, uap->gid);
free(path, M_TEMP);
return (error);
}
int
ibcs2_rmdir(td, uap)
struct thread *td;
struct ibcs2_rmdir_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = kern_rmdir(td, path, UIO_SYSSPACE);
free(path, M_TEMP);
return (error);
}
int
ibcs2_mkdir(td, uap)
struct thread *td;
struct ibcs2_mkdir_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = kern_mkdir(td, path, UIO_SYSSPACE, uap->mode);
free(path, M_TEMP);
return (error);
}
int
ibcs2_symlink(td, uap)
struct thread *td;
struct ibcs2_symlink_args *uap;
{
char *path, *link;
int error;
CHECKALTEXIST(td, uap->path, &path);
/*
* Have to expand CHECKALTCREAT() so that 'path' can be freed on
* errors.
*/
error = ibcs2_emul_find(td, uap->link, UIO_USERSPACE, &link, 1);
if (link == NULL) {
free(path, M_TEMP);
return (error);
}
error = kern_symlink(td, path, link, UIO_SYSSPACE);
free(path, M_TEMP);
free(link, M_TEMP);
return (error);
}
int
ibcs2_rename(td, uap)
struct thread *td;
struct ibcs2_rename_args *uap;
{
char *from, *to;
int error;
CHECKALTEXIST(td, uap->from, &from);
/*
* Have to expand CHECKALTCREAT() so that 'from' can be freed on
* errors.
*/
error = ibcs2_emul_find(td, uap->to, UIO_USERSPACE, &to, 1);
if (to == NULL) {
free(from, M_TEMP);
return (error);
}
error = kern_rename(td, from, to, UIO_SYSSPACE);
free(from, M_TEMP);
free(to, M_TEMP);
return (error);
}
int
ibcs2_readlink(td, uap)
struct thread *td;
struct ibcs2_readlink_args *uap;
{
char *path;
int error;
CHECKALTEXIST(td, uap->path, &path);
error = kern_readlink(td, path, UIO_SYSSPACE, uap->buf, UIO_USERSPACE,
uap->count);
free(path, M_TEMP);
return (error);
}