NetBSD/sys/miscfs/procfs/procfs_linux.c

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/* $NetBSD: procfs_linux.c,v 1.23 2005/05/29 21:55:34 christos Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Frank van der Linden for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
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#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: procfs_linux.c,v 1.23 2005/05/29 21:55:34 christos Exp $");
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#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/exec.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/tty.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <miscfs/procfs/procfs.h>
#include <compat/linux/common/linux_exec.h>
#include <uvm/uvm_extern.h>
#include <uvm/uvm.h>
#define PGTOB(p) ((unsigned long)(p) << PAGE_SHIFT)
#define PGTOKB(p) ((unsigned long)(p) << (PAGE_SHIFT - 10))
/*
* Linux compatible /proc/meminfo. Only active when the -o linux
* mountflag is used.
*/
int
procfs_domeminfo(struct proc *curp, struct proc *p, struct pfsnode *pfs,
struct uio *uio)
{
char bf[512];
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int len;
len = snprintf(bf, sizeof bf,
" total: used: free: shared: buffers: cached:\n"
"Mem: %8lu %8lu %8lu %8lu %8lu %8lu\n"
"Swap: %8lu %8lu %8lu\n"
"MemTotal: %8lu kB\n"
"MemFree: %8lu kB\n"
"MemShared: %8lu kB\n"
"Buffers: %8lu kB\n"
"Cached: %8lu kB\n"
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"SwapTotal: %8lu kB\n"
"SwapFree: %8lu kB\n",
PGTOB(uvmexp.npages),
PGTOB(uvmexp.npages - uvmexp.free),
PGTOB(uvmexp.free),
0L,
PGTOB(uvmexp.filepages),
PGTOB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages),
PGTOB(uvmexp.swpages),
PGTOB(uvmexp.swpginuse),
PGTOB(uvmexp.swpages - uvmexp.swpginuse),
PGTOKB(uvmexp.npages),
PGTOKB(uvmexp.free),
0L,
PGTOKB(uvmexp.filepages),
PGTOKB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages),
PGTOKB(uvmexp.swpages),
PGTOKB(uvmexp.swpages - uvmexp.swpginuse));
if (len == 0)
return 0;
return (uiomove_frombuf(bf, len, uio));
}
/*
* Linux compatible /proc/<pid>/stat. Only active when the -o linux
* mountflag is used.
*/
int
procfs_do_pid_stat(struct proc *curp, struct lwp *l, struct pfsnode *pfs,
struct uio *uio)
{
char bf[512];
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int len;
struct proc *p = l->l_proc;
struct tty *tty = p->p_session->s_ttyp;
struct rusage *ru = &p->p_stats->p_ru;
struct rusage *cru = &p->p_stats->p_cru;
struct vm_map *map = &p->p_vmspace->vm_map;
struct vm_map_entry *entry;
unsigned long stext = 0, etext = 0, sstack = 0;
if (map != &curproc->p_vmspace->vm_map)
vm_map_lock_read(map);
for (entry = map->header.next; entry != &map->header;
entry = entry->next) {
if (UVM_ET_ISSUBMAP(entry))
continue;
/* assume text is the first entry */
if (stext == etext) {
stext = entry->start;
etext = entry->end;
break;
}
}
#ifdef LINUX_USRSTACK
if (strcmp(p->p_emul->e_name, "linux") == 0 &&
LINUX_USRSTACK < USRSTACK)
sstack = (unsigned long) LINUX_USRSTACK;
else
#endif
sstack = (unsigned long) USRSTACK;
if (map != &curproc->p_vmspace->vm_map)
vm_map_unlock_read(map);
len = snprintf(bf, sizeof(bf),
"%d (%s) %c %d %d %d %d %d "
"%u "
"%lu %lu %lu %lu %lu %lu %lu %lu "
"%d %d %d "
"%lu %lu %lu %lu %" PRIu64 " "
"%lu %lu %lu "
"%u %u "
"%u %u %u %u "
"%lu %lu %lu %d %d\n",
p->p_pid,
p->p_comm,
"0IR3SZD"[(p->p_stat > 6) ? 0 : (int)p->p_stat],
p->p_pptr->p_pid,
p->p_pgid,
p->p_session->s_sid,
tty ? tty->t_dev : 0,
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(tty && tty->t_pgrp) ? tty->t_pgrp->pg_id : 0,
p->p_flag,
ru->ru_minflt,
cru->ru_minflt,
ru->ru_majflt,
cru->ru_majflt,
ru->ru_utime.tv_sec,
ru->ru_stime.tv_sec,
cru->ru_utime.tv_sec,
cru->ru_stime.tv_sec,
p->p_nice, /* XXX: priority */
p->p_nice,
0,
p->p_rtime.tv_sec,
p->p_stats->p_start.tv_sec,
ru->ru_ixrss + ru->ru_idrss + ru->ru_isrss,
ru->ru_maxrss,
p->p_rlimit[RLIMIT_RSS].rlim_cur,
stext, /* start code */
etext, /* end code */
sstack, /* mm start stack */
0, /* XXX: pc */
0, /* XXX: sp */
p->p_sigctx.ps_siglist.__bits[0], /* pending */
p->p_sigctx.ps_sigmask.__bits[0], /* blocked */
p->p_sigctx.ps_sigignore.__bits[0], /* ignored */
p->p_sigctx.ps_sigcatch.__bits[0], /* caught */
(unsigned long)(intptr_t)l->l_wchan,
ru->ru_nvcsw,
ru->ru_nivcsw,
p->p_exitsig,
0); /* XXX: processor */
if (len == 0)
return 0;
return (uiomove_frombuf(bf, len, uio));
}
int
procfs_docpuinfo(struct proc *curp, struct proc *p, struct pfsnode *pfs,
struct uio *uio)
{
int len = 4096;
char *bf = malloc(len, M_TEMP, M_WAITOK);
int error;
if (procfs_getcpuinfstr(bf, &len) < 0) {
error = ENOSPC;
goto done;
}
if (len == 0) {
error = 0;
goto done;
}
error = uiomove_frombuf(bf, len, uio);
done:
free(bf, M_TEMP);
return error;
}
int
procfs_douptime(struct proc *curp, struct proc *p, struct pfsnode *pfs,
struct uio *uio)
{
char bf[512];
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int len;
struct timeval runtime;
u_int64_t idle;
timersub(&curcpu()->ci_schedstate.spc_runtime, &boottime, &runtime);
idle = curcpu()->ci_schedstate.spc_cp_time[CP_IDLE];
len = snprintf(bf, sizeof(bf),
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"%lu.%02lu %" PRIu64 ".%02" PRIu64 "\n",
runtime.tv_sec, runtime.tv_usec / 10000,
idle / hz, (((idle % hz) * 100) / hz) % 100);
if (len == 0)
return 0;
return (uiomove_frombuf(bf, len, uio));
}
int
procfs_domounts(struct proc *curp, struct proc *p, struct pfsnode *pfs,
struct uio *uio)
{
char bf[512], *mtab = NULL;
const char *fsname;
size_t len, mtabsz = 0;
struct mount *mp, *nmp;
struct statvfs *sfs;
int error = 0;
simple_lock(&mountlist_slock);
for (mp = CIRCLEQ_FIRST(&mountlist); mp != (void *)&mountlist;
mp = nmp) {
if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) {
nmp = CIRCLEQ_NEXT(mp, mnt_list);
continue;
}
sfs = &mp->mnt_stat;
/* Linux uses different names for some filesystems */
fsname = sfs->f_fstypename;
if (strcmp(fsname, "procfs") == 0)
fsname = "proc";
else if (strcmp(fsname, "ext2fs") == 0)
fsname = "ext2";
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len = snprintf(bf, sizeof(bf), "%s %s %s %s%s%s%s%s%s 0 0\n",
sfs->f_mntfromname,
sfs->f_mntonname,
fsname,
(mp->mnt_flag & MNT_RDONLY) ? "ro" : "rw",
(mp->mnt_flag & MNT_NOSUID) ? ",nosuid" : "",
(mp->mnt_flag & MNT_NOEXEC) ? ",noexec" : "",
(mp->mnt_flag & MNT_NODEV) ? ",nodev" : "",
(mp->mnt_flag & MNT_SYNCHRONOUS) ? ",sync" : "",
(mp->mnt_flag & MNT_NOATIME) ? ",noatime" : ""
);
mtab = realloc(mtab, mtabsz + len, M_TEMP, M_WAITOK);
memcpy(mtab + mtabsz, bf, len);
mtabsz += len;
simple_lock(&mountlist_slock);
nmp = CIRCLEQ_NEXT(mp, mnt_list);
vfs_unbusy(mp);
}
simple_unlock(&mountlist_slock);
if (mtabsz > 0) {
error = uiomove_frombuf(mtab, mtabsz, uio);
free(mtab, M_TEMP);
}
return error;
}