/*-
* Copyright (c) 1994-1995 S�ren Schmidt
* 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
* in this position and unchanged.
* 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 withough 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.
*
* $Id: linux_misc.c,v 1.19 1996/05/02 10:43:13 phk Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/kernel.h>
#include <sys/exec.h>
#include <sys/mman.h>
#include <sys/proc.h>
#include <sys/dirent.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/imgact_aout.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/times.h>
#include <sys/utsname.h>
#include <sys/vnode.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <vm/lock.h>
#include <vm/vm_kern.h>
#include <vm/vm_prot.h>
#include <vm/vm_map.h>
#include <vm/vm_extern.h>
#include <i386/linux/linux.h>
#include <i386/linux/linux_proto.h>
#include <i386/linux/linux_util.h>
int
linux_alarm(struct proc *p, struct linux_alarm_args *args, int *retval)
{
struct itimerval it, old_it;
struct timeval tv;
int s;
#ifdef DEBUG
printf("Linux-emul(%d): alarm(%d)\n", p->p_pid, args->secs);
#endif
it.it_value.tv_sec = (long)args->secs;
it.it_value.tv_usec = 0;
it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 0;
s = splclock();
old_it = p->p_realtimer;
tv = time;
if (timerisset(&old_it.it_value))
if (timercmp(&old_it.it_value, &tv, <))
timerclear(&old_it.it_value);
else
timevalsub(&old_it.it_value, &tv);
splx(s);
if (itimerfix(&it.it_value) || itimerfix(&it.it_interval))
return EINVAL;
s = splclock();
untimeout(realitexpire, (caddr_t)p);
tv = time;
if (timerisset(&it.it_value)) {
timevaladd(&it.it_value, &tv);
timeout(realitexpire, (caddr_t)p, hzto(&it.it_value));
}
p->p_realtimer = it;
splx(s);
if (old_it.it_value.tv_usec)
old_it.it_value.tv_sec++;
*retval = old_it.it_value.tv_sec;
return 0;
}
int
linux_brk(struct proc *p, struct linux_brk_args *args, int *retval)
{
#if 0
struct vmspace *vm = p->p_vmspace;
vm_offset_t new, old;
int error;
if ((vm_offset_t)args->dsend < (vm_offset_t)vm->vm_daddr)
return EINVAL;
if (((caddr_t)args->dsend - (caddr_t)vm->vm_daddr)
> p->p_rlimit[RLIMIT_DATA].rlim_cur)
return ENOMEM;
old = round_page((vm_offset_t)vm->vm_daddr) + ctob(vm->vm_dsize);
new = round_page((vm_offset_t)args->dsend);
*retval = old;
if ((new-old) > 0) {
if (swap_pager_full)
return ENOMEM;
error = vm_map_find(&vm->vm_map, NULL, 0, &old, (new-old), FALSE,
VM_PROT_ALL, VM_PROT_ALL, 0);
if (error)
return error;
vm->vm_dsize += btoc((new-old));
*retval = (int)(vm->vm_daddr + ctob(vm->vm_dsize));
}
return 0;
#else
struct vmspace *vm = p->p_vmspace;
vm_offset_t new, old;
struct obreak_args /* {
char * nsize;
} */ tmp;
#ifdef DEBUG
printf("Linux-emul(%d): brk(%08x)\n", p->p_pid, args->dsend);
#endif
old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
new = (vm_offset_t)args->dsend;
tmp.nsize = (char *) new;
if (((caddr_t)new > vm->vm_daddr) && !obreak(p, &tmp, retval))
retval[0] = (int)new;
else
retval[0] = (int)old;
return 0;
#endif
}
int
linux_uselib(struct proc *p, struct linux_uselib_args *args, int *retval)
{
struct nameidata ni;
struct vnode *vp;
struct exec *a_out;
struct vattr attr;
vm_offset_t vmaddr;
unsigned long file_offset;
vm_offset_t buffer;
unsigned long bss_size;
int error;
caddr_t sg;
int locked;
sg = stackgap_init();
CHECKALTEXIST(p, &sg, args->library);
#ifdef DEBUG
printf("Linux-emul(%d): uselib(%s)\n", p->p_pid, args->library);
#endif
a_out = NULL;
locked = 0;
vp = NULL;
NDINIT(&ni, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, args->library, p);
if (error = namei(&ni))
goto cleanup;
vp = ni.ni_vp;
if (vp == NULL) {
error = ENOEXEC; /* ?? */
goto cleanup;
}
/*
* From here on down, we have a locked vnode that must be unlocked.
*/
locked++;
/*
* Writable?
*/
if (vp->v_writecount) {
error = ETXTBSY;
goto cleanup;
}
/*
* Executable?
*/
if (error = VOP_GETATTR(vp, &attr, p->p_ucred, p))
goto cleanup;
if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
((attr.va_mode & 0111) == 0) ||
(attr.va_type != VREG)) {
error = ENOEXEC;
goto cleanup;
}
/*
* Sensible size?
*/
if (attr.va_size == 0) {
error = ENOEXEC;
goto cleanup;
}
/*
* Can we access it?
*/
if (error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p))
goto cleanup;
if (error = VOP_OPEN(vp, FREAD, p->p_ucred, p))
goto cleanup;
/*
* Lock no longer needed
*/
VOP_UNLOCK(vp);
locked = 0;
/*
* Pull in executable header into kernel_map
*/
error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE,
VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp, 0);
if (error)
goto cleanup;
/*
* Is it a Linux binary ?
*/
if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
error = ENOEXEC;
goto cleanup;
}
/* While we are here, we should REALLY do some more checks */
/*
* Set file/virtual offset based on a.out variant.
*/
switch ((int)(a_out->a_magic & 0xffff)) {
case 0413: /* ZMAGIC */
file_offset = 1024;
break;
case 0314: /* QMAGIC */
file_offset = 0;
break;
default:
error = ENOEXEC;
goto cleanup;
}
bss_size = round_page(a_out->a_bss);
/*
* Check various fields in header for validity/bounds.
*/
if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
error = ENOEXEC;
goto cleanup;
}
/* text + data can't exceed file size */
if (a_out->a_data + a_out->a_text > attr.va_size) {
error = EFAULT;
goto cleanup;
}
/*
* text/data/bss must not exceed limits
* XXX: this is not complete. it should check current usage PLUS
* the resources needed by this library.
*/
if (a_out->a_text > MAXTSIZ || a_out->a_data + bss_size > MAXDSIZ ||
a_out->a_data+bss_size > p->p_rlimit[RLIMIT_DATA].rlim_cur) {
error = ENOMEM;
goto cleanup;
}
/*
* prevent more writers
*/
vp->v_flag |= VTEXT;
/*
* Check if file_offset page aligned,.
* Currently we cannot handle misalinged file offsets,
* and so we read in the entire image (what a waste).
*/
if (file_offset & PAGE_MASK) {
#ifdef DEBUG
printf("uselib: Non page aligned binary %d\n", file_offset);
#endif
/*
* Map text+data read/write/execute
*/
/* a_entry is the load address and is page aligned */
vmaddr = trunc_page(a_out->a_entry);
/* get anon user mapping, read+write+execute */
error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &vmaddr,
a_out->a_text + a_out->a_data, FALSE,
VM_PROT_ALL, VM_PROT_ALL, 0);
if (error)
goto cleanup;
/* map file into kernel_map */
error = vm_mmap(kernel_map, &buffer,
round_page(a_out->a_text + a_out->a_data + file_offset),
VM_PROT_READ, VM_PROT_READ, 0,
(caddr_t)vp, trunc_page(file_offset));
if (error)
goto cleanup;
/* copy from kernel VM space to user space */
error = copyout((caddr_t)(buffer + file_offset), (caddr_t)vmaddr,
a_out->a_text + a_out->a_data);
/* release temporary kernel space */
vm_map_remove(kernel_map, buffer,
buffer + round_page(a_out->a_text + a_out->a_data + file_offset));
if (error)
goto cleanup;
}
else {
#ifdef DEBUG
printf("uselib: Page aligned binary %d\n", file_offset);
#endif
/*
* for QMAGIC, a_entry is 20 bytes beyond the load address
* to skip the executable header
*/
vmaddr = trunc_page(a_out->a_entry);
/*
* Map it all into the process's space as a single copy-on-write
* "data" segment.
*/
error = vm_mmap(&p->p_vmspace->vm_map, &vmaddr,
a_out->a_text + a_out->a_data,
VM_PROT_ALL, VM_PROT_ALL, MAP_PRIVATE | MAP_FIXED,
(caddr_t)vp, file_offset);
if (error)
goto cleanup;
}
#ifdef DEBUG
printf("mem=%08x = %08x %08x\n", vmaddr, ((int*)vmaddr)[0], ((int*)vmaddr)[1]);
#endif
if (bss_size != 0) {
/*
* Calculate BSS start address
*/
vmaddr = trunc_page(a_out->a_entry) + a_out->a_text + a_out->a_data;
/*
* allocate some 'anon' space
*/
error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &vmaddr,
bss_size, FALSE,
VM_PROT_ALL, VM_PROT_ALL, 0);
if (error)
goto cleanup;
}
cleanup:
/*
* Unlock vnode if needed
*/
if (locked)
VOP_UNLOCK(vp);
/*
* Release the kernel mapping.
*/
if (a_out)
vm_map_remove(kernel_map, (vm_offset_t)a_out, (vm_offset_t)a_out + PAGE_SIZE);
return error;
}
/* XXX move */
struct linux_select_argv {
int nfds;
fd_set *readfds;
fd_set *writefds;
fd_set *exceptfds;
struct timeval *timeout;
};
int
linux_select(struct proc *p, struct linux_select_args *args, int *retval)
{
struct linux_select_argv linux_args;
struct linux_newselect_args newsel;
int error;
#ifdef SELECT_DEBUG
printf("Linux-emul(%d): select(%x)\n",
p->p_pid, args->ptr);
#endif
if ((error = copyin((caddr_t)args->ptr, (caddr_t)&linux_args,
sizeof(linux_args))))
return error;
newsel.nfds = linux_args.nfds;
newsel.readfds = linux_args.readfds;
newsel.writefds = linux_args.writefds;
newsel.exceptfds = linux_args.exceptfds;
newsel.timeout = linux_args.timeout;
return linux_newselect(p, &newsel, retval);
}
int
linux_newselect(struct proc *p, struct linux_newselect_args *args, int *retval)
{
struct select_args bsa;
struct timeval tv0, tv1, utv, *tvp;
caddr_t sg;
int error;
#ifdef DEBUG
printf("Linux-emul(%d): newselect(%d, %x, %x, %x, %x)\n",
p->p_pid, args->nfds, args->readfds, args->writefds,
args->exceptfds, args->timeout);
#endif
error = 0;
bsa.nd = args->nfds;
bsa.in = args->readfds;
bsa.ou = args->writefds;
bsa.ex = args->exceptfds;
bsa.tv = args->timeout;
/*
* Store current time for computation of the amount of
* time left.
*/
if (args->timeout) {
if ((error = copyin(args->timeout, &utv, sizeof(utv))))
goto select_out;
#ifdef DEBUG
printf("Linux-emul(%d): incoming timeout (%d/%d)\n",
p->p_pid, utv.tv_sec, utv.tv_usec);
#endif
if (itimerfix(&utv)) {
/*
* The timeval was invalid. Convert it to something
* valid that will act as it does under Linux.
*/
sg = stackgap_init();
tvp = stackgap_alloc(&sg, sizeof(utv));
utv.tv_sec += utv.tv_usec / 1000000;
utv.tv_usec %= 1000000;
if (utv.tv_usec < 0) {
utv.tv_sec -= 1;
utv.tv_usec += 1000000;
}
if (utv.tv_sec < 0)
timerclear(&utv);
if ((error = copyout(&utv, tvp, sizeof(utv))))
goto select_out;
bsa.tv = tvp;
}
microtime(&tv0);
}
error = select(p, &bsa, retval);
#ifdef DEBUG
printf("Linux-emul(%d): real select returns %d\n",
p->p_pid, error);
#endif
if (error) {
/*
* See fs/select.c in the Linux kernel. Without this,
* Maelstrom doesn't work.
*/
if (error == ERESTART)
error = EINTR;
goto select_out;
}
if (args->timeout) {
if (*retval) {
/*
* Compute how much time was left of the timeout,
* by subtracting the current time and the time
* before we started the call, and subtracting
* that result from the user-supplied value.
*/
microtime(&tv1);
timevalsub(&tv1, &tv0);
timevalsub(&utv, &tv1);
if (utv.tv_sec < 0)
timerclear(&utv);
} else
timerclear(&utv);
#ifdef DEBUG
printf("Linux-emul(%d): outgoing timeout (%d/%d)\n",
p->p_pid, utv.tv_sec, utv.tv_usec);
#endif
if ((error = copyout(&utv, args->timeout, sizeof(utv))))
goto select_out;
}
select_out:
#ifdef DEBUG
printf("Linux-emul(%d): newselect_out -> %d\n",
p->p_pid, error);
#endif
return error;
}
int
linux_getpgid(struct proc *p, struct linux_getpgid_args *args, int *retval)
{
struct proc *curproc;
#ifdef DEBUG
printf("Linux-emul(%d): getpgid(%d)\n", p->p_pid, args->pid);
#endif
if (args->pid != p->p_pid) {
if (!(curproc = pfind(args->pid)))
return ESRCH;
}
else
curproc = p;
*retval = curproc->p_pgid;
return 0;
}
int
linux_fork(struct proc *p, struct linux_fork_args *args, int *retval)
{
int error;
#ifdef DEBUG
printf("Linux-emul(%d): fork()\n", p->p_pid);
#endif
if (error = fork(p, (struct fork_args *)args, retval))
return error;
if (retval[1] == 1)
retval[0] = 0;
return 0;
}
/* XXX move */
struct linux_mmap_argv {
linux_caddr_t addr;
int len;
int prot;
int flags;
int fd;
int pos;
};
int
linux_mmap(struct proc *p, struct linux_mmap_args *args, int *retval)
{
struct mmap_args /* {
caddr_t addr;
size_t len;
int prot;
int flags;
int fd;
long pad;
off_t pos;
} */ bsd_args;
int error;
struct linux_mmap_argv linux_args;
if ((error = copyin((caddr_t)args->ptr, (caddr_t)&linux_args,
sizeof(linux_args))))
return error;
#ifdef DEBUG
printf("Linux-emul(%d): mmap(%08x, %d, %d, %08x, %d, %d)\n",
p->p_pid, linux_args.addr, linux_args.len, linux_args.prot,
linux_args.flags, linux_args.fd, linux_args.pos);
#endif
bsd_args.flags = 0;
if (linux_args.flags & LINUX_MAP_SHARED)
bsd_args.flags |= MAP_SHARED;
if (linux_args.flags & LINUX_MAP_PRIVATE)
bsd_args.flags |= MAP_PRIVATE;
if (linux_args.flags & LINUX_MAP_FIXED)
bsd_args.flags |= MAP_FIXED;
if (linux_args.flags & LINUX_MAP_ANON)
bsd_args.flags |= MAP_ANON;
bsd_args.addr = linux_args.addr;
bsd_args.len = linux_args.len;
bsd_args.prot = linux_args.prot;
bsd_args.fd = linux_args.fd;
bsd_args.pos = linux_args.pos;
bsd_args.pad = 0;
return mmap(p, &bsd_args, retval);
}
int
linux_msync(struct proc *p, struct linux_msync_args *args, int *retval)
{
struct msync_args bsd_args;
bsd_args.addr = args->addr;
bsd_args.len = args->len;
bsd_args.flags = 0; /* XXX ignore */
return msync(p, &bsd_args, retval);
}
int
linux_pipe(struct proc *p, struct linux_pipe_args *args, int *retval)
{
int error;
#ifdef DEBUG
printf("Linux-emul(%d): pipe(*)\n", p->p_pid);
#endif
if (error = pipe(p, 0, retval))
return error;
if (error = copyout(retval, args->pipefds, 2*sizeof(int)))
return error;
*retval = 0;
return 0;
}
int
linux_time(struct proc *p, struct linux_time_args *args, int *retval)
{
struct timeval tv;
linux_time_t tm;
int error;
#ifdef DEBUG
printf("Linux-emul(%d): time(*)\n", p->p_pid);
#endif
microtime(&tv);
tm = tv.tv_sec;
if (args->tm && (error = copyout(&tm, args->tm, sizeof(linux_time_t))))
return error;
*retval = tm;
return 0;
}
struct linux_times_argv {
long tms_utime;
long tms_stime;
long tms_cutime;
long tms_cstime;
};
#define CLK_TCK 100 /* Linux uses 100 */
#define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
int
linux_times(struct proc *p, struct linux_times_args *args, int *retval)
{
struct timeval tv;
struct linux_times_argv tms;
struct rusage ru;
int error;
#ifdef DEBUG
printf("Linux-emul(%d): times(*)\n", p->p_pid);
#endif
calcru(p, &ru.ru_utime, &ru.ru_stime, NULL);
tms.tms_utime = CONVTCK(ru.ru_utime);
tms.tms_stime = CONVTCK(ru.ru_stime);
tms.tms_cutime = CONVTCK(p->p_stats->p_cru.ru_utime);
tms.tms_cstime = CONVTCK(p->p_stats->p_cru.ru_stime);
if ((error = copyout((caddr_t)&tms, (caddr_t)args->buf,
sizeof(struct linux_times_argv))))
return error;
microtime(&tv);
timevalsub(&tv, &boottime);
*retval = (int)CONVTCK(tv);
return 0;
}
/* XXX move */
struct linux_newuname_t {
char sysname[65];
char nodename[65];
char release[65];
char version[65];
char machine[65];
char domainname[65];
};
int
linux_newuname(struct proc *p, struct linux_newuname_args *args, int *retval)
{
struct linux_newuname_t linux_newuname;
#ifdef DEBUG
printf("Linux-emul(%d): newuname(*)\n", p->p_pid);
#endif
bzero(&linux_newuname, sizeof(struct linux_newuname_args));
strncpy(linux_newuname.sysname, ostype, 64);
strncpy(linux_newuname.nodename, hostname, 64);
strncpy(linux_newuname.release, osrelease, 64);
strncpy(linux_newuname.version, version, 64);
strncpy(linux_newuname.machine, machine, 64);
strncpy(linux_newuname.domainname, domainname, 64);
return (copyout((caddr_t)&linux_newuname, (caddr_t)args->buf,
sizeof(struct linux_newuname_t)));
}
struct linux_utimbuf {
linux_time_t l_actime;
linux_time_t l_modtime;
};
int
linux_utime(struct proc *p, struct linux_utime_args *args, int *retval)
{
struct utimes_args /* {
char *path;
struct timeval *tptr;
} */ bsdutimes;
struct timeval tv[2], *tvp;
struct linux_utimbuf lut;
int error;
caddr_t sg;
sg = stackgap_init();
CHECKALTEXIST(p, &sg, args->fname);
#ifdef DEBUG
printf("Linux-emul(%d): utime(%s, *)\n", p->p_pid, args->fname);
#endif
if (args->times) {
if ((error = copyin(args->times, &lut, sizeof lut)))
return error;
tv[0].tv_sec = lut.l_actime;
tv[0].tv_usec = 0;
tv[1].tv_sec = lut.l_modtime;
tv[1].tv_usec = 0;
/* so that utimes can copyin */
tvp = (struct timeval *)stackgap_alloc(&sg, sizeof(tv));
if ((error = copyout(tv, tvp, sizeof(tv))))
return error;
bsdutimes.tptr = tvp;
} else
bsdutimes.tptr = NULL;
bsdutimes.path = args->fname;
return utimes(p, &bsdutimes, retval);
}
int
linux_waitpid(struct proc *p, struct linux_waitpid_args *args, int *retval)
{
struct wait_args /* {
int pid;
int *status;
int options;
struct rusage *rusage;
} */ tmp;
int error, tmpstat;
#ifdef DEBUG
printf("Linux-emul(%d): waitpid(%d, 0x%x, %d)\n",
p->p_pid, args->pid, args->status, args->options);
#endif
tmp.pid = args->pid;
tmp.status = args->status;
tmp.options = args->options;
tmp.rusage = NULL;
if (error = wait4(p, &tmp, retval))
return error;
if (args->status) {
if (error = copyin(args->status, &tmpstat, sizeof(int)))
return error;
if (WIFSIGNALED(tmpstat))
tmpstat = (tmpstat & 0xffffff80) |
bsd_to_linux_signal[WTERMSIG(tmpstat)];
else if (WIFSTOPPED(tmpstat))
tmpstat = (tmpstat & 0xffff00ff) |
(bsd_to_linux_signal[WSTOPSIG(tmpstat)]<<8);
return copyout(&tmpstat, args->status, sizeof(int));
} else
return 0;
}
int
linux_wait4(struct proc *p, struct linux_wait4_args *args, int *retval)
{
struct wait_args /* {
int pid;
int *status;
int options;
struct rusage *rusage;
} */ tmp;
int error, tmpstat;
#ifdef DEBUG
printf("Linux-emul(%d): wait4(%d, 0x%x, %d, 0x%x)\n",
p->p_pid, args->pid, args->status, args->options, args->rusage);
#endif
tmp.pid = args->pid;
tmp.status = args->status;
tmp.options = args->options;
tmp.rusage = args->rusage;
if (error = wait4(p, &tmp, retval))
return error;
p->p_siglist &= ~sigmask(SIGCHLD);
if (args->status) {
if (error = copyin(args->status, &tmpstat, sizeof(int)))
return error;
if (WIFSIGNALED(tmpstat))
tmpstat = (tmpstat & 0xffffff80) |
bsd_to_linux_signal[WTERMSIG(tmpstat)];
else if (WIFSTOPPED(tmpstat))
tmpstat = (tmpstat & 0xffff00ff) |
(bsd_to_linux_signal[WSTOPSIG(tmpstat)]<<8);
return copyout(&tmpstat, args->status, sizeof(int));
} else
return 0;
}
int
linux_mknod(struct proc *p, struct linux_mknod_args *args, int *retval)
{
caddr_t sg;
struct mknod_args bsd_mknod;
struct mkfifo_args bsd_mkfifo;
sg = stackgap_init();
CHECKALTCREAT(p, &sg, args->path);
#ifdef DEBUG
printf("Linux-emul(%d): mknod(%s, %d, %d)\n",
p->p_pid, args->path, args->mode, args->dev);
#endif
if (args->mode & S_IFIFO) {
bsd_mkfifo.path = args->path;
bsd_mkfifo.mode = args->mode;
return mkfifo(p, &bsd_mkfifo, retval);
} else {
bsd_mknod.path = args->path;
bsd_mknod.mode = args->mode;
bsd_mknod.dev = args->dev;
return mknod(p, &bsd_mknod, retval);
}
}
/*
* UGH! This is just about the dumbest idea I've ever heard!!
*/
int
linux_personality(struct proc *p, struct linux_personality_args *args,
int *retval)
{
#ifdef DEBUG
printf("Linux-emul(%d): personality(%d)\n",
p->p_pid, args->per);
#endif
if (args->per != 0)
return EINVAL;
/* Yes Jim, it's still a Linux... */
retval[0] = 0;
return 0;
}
/*
* Wrappers for get/setitimer for debugging..
*/
int
linux_setitimer(struct proc *p, struct linux_setitimer_args *args, int *retval)
{
struct setitimer_args bsa;
struct itimerval foo;
int error;
#ifdef DEBUG
printf("Linux-emul(%d): setitimer(%08x, %08x)\n",
p->p_pid, args->itv, args->oitv);
#endif
bsa.which = args->which;
bsa.itv = args->itv;
bsa.oitv = args->oitv;
if (args->itv) {
if ((error = copyin((caddr_t)args->itv, (caddr_t)&foo,
sizeof(foo))))
return error;
#ifdef DEBUG
printf("setitimer: value: sec: %d, usec: %d\n", foo.it_value.tv_sec, foo.it_value.tv_usec);
printf("setitimer: interval: sec: %d, usec: %d\n", foo.it_interval.tv_sec, foo.it_interval.tv_usec);
#endif
}
return setitimer(p, &bsa, retval);
}
int
linux_getitimer(struct proc *p, struct linux_getitimer_args *args, int *retval)
{
struct getitimer_args bsa;
#ifdef DEBUG
printf("Linux-emul(%d): getitimer(%08x)\n",
p->p_pid, args->itv);
#endif
bsa.which = args->which;
bsa.itv = args->itv;
return getitimer(p, &bsa, retval);
}