734 lines
18 KiB
C
734 lines
18 KiB
C
/* $NetBSD: procfs_linux.c,v 1.71 2015/07/24 13:02:52 maxv Exp $ */
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/*
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* Copyright (c) 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Frank van der Linden for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: procfs_linux.c,v 1.71 2015/07/24 13:02:52 maxv Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/cpu.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/exec.h>
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#include <sys/resource.h>
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#include <sys/resourcevar.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/tty.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/conf.h>
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#include <sys/sysctl.h>
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#include <sys/kauth.h>
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#include <sys/filedesc.h>
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#include <miscfs/procfs/procfs.h>
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#include <compat/linux/common/linux_exec.h>
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#include <compat/linux32/common/linux32_sysctl.h>
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#include <uvm/uvm_extern.h>
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#include <uvm/uvm.h>
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extern struct devsw_conv *devsw_conv;
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extern int max_devsw_convs;
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#define PGTOB(p) ((unsigned long)(p) << PAGE_SHIFT)
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#define PGTOKB(p) ((unsigned long)(p) << (PAGE_SHIFT - 10))
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#define LBFSZ (8 * 1024)
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static void
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get_proc_size_info(struct lwp *l, unsigned long *stext, unsigned long *etext, unsigned long *sstack)
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{
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struct proc *p = l->l_proc;
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struct vmspace *vm;
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struct vm_map *map;
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struct vm_map_entry *entry;
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*stext = 0;
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*etext = 0;
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*sstack = 0;
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proc_vmspace_getref(p, &vm);
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map = &vm->vm_map;
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vm_map_lock_read(map);
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for (entry = map->header.next; entry != &map->header;
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entry = entry->next) {
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if (UVM_ET_ISSUBMAP(entry))
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continue;
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/* assume text is the first entry */
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if (*stext == *etext) {
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*stext = entry->start;
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*etext = entry->end;
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break;
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}
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}
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#if defined(LINUX_USRSTACK32) && defined(USRSTACK32)
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if (strcmp(p->p_emul->e_name, "linux32") == 0 &&
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LINUX_USRSTACK32 < USRSTACK32)
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*sstack = (unsigned long)LINUX_USRSTACK32;
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else
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#endif
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#ifdef LINUX_USRSTACK
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if (strcmp(p->p_emul->e_name, "linux") == 0 &&
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LINUX_USRSTACK < USRSTACK)
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*sstack = (unsigned long)LINUX_USRSTACK;
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else
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#endif
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#ifdef USRSTACK32
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if (strstr(p->p_emul->e_name, "32") != NULL)
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*sstack = (unsigned long)USRSTACK32;
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else
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#endif
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*sstack = (unsigned long)USRSTACK;
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/*
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* jdk 1.6 compares low <= addr && addr < high
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* if we put addr == high, then the test fails
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* so eat one page.
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*/
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*sstack -= PAGE_SIZE;
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vm_map_unlock_read(map);
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uvmspace_free(vm);
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}
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/*
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* Linux compatible /proc/meminfo. Only active when the -o linux
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* mountflag is used.
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*/
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int
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procfs_domeminfo(struct lwp *curl, struct proc *p,
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struct pfsnode *pfs, struct uio *uio)
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{
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char *bf;
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int len;
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int error = 0;
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bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
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len = snprintf(bf, LBFSZ,
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" total: used: free: shared: buffers: cached:\n"
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"Mem: %8lu %8lu %8lu %8lu %8lu %8lu\n"
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"Swap: %8lu %8lu %8lu\n"
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"MemTotal: %8lu kB\n"
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"MemFree: %8lu kB\n"
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"MemShared: %8lu kB\n"
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"Buffers: %8lu kB\n"
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"Cached: %8lu kB\n"
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"SwapTotal: %8lu kB\n"
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"SwapFree: %8lu kB\n",
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PGTOB(uvmexp.npages),
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PGTOB(uvmexp.npages - uvmexp.free),
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PGTOB(uvmexp.free),
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0L,
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PGTOB(uvmexp.filepages),
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PGTOB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages),
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PGTOB(uvmexp.swpages),
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PGTOB(uvmexp.swpginuse),
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PGTOB(uvmexp.swpages - uvmexp.swpginuse),
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PGTOKB(uvmexp.npages),
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PGTOKB(uvmexp.free),
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0L,
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PGTOKB(uvmexp.filepages),
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PGTOKB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages),
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PGTOKB(uvmexp.swpages),
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PGTOKB(uvmexp.swpages - uvmexp.swpginuse));
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if (len == 0)
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goto out;
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error = uiomove_frombuf(bf, len, uio);
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out:
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free(bf, M_TEMP);
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return error;
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}
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/*
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* Linux compatible /proc/devices. Only active when the -o linux
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* mountflag is used.
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*/
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int
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procfs_dodevices(struct lwp *curl, struct proc *p,
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struct pfsnode *pfs, struct uio *uio)
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{
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char *bf;
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int offset = 0;
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int i, error = ENAMETOOLONG;
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/* XXX elad - may need filtering. */
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bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
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offset += snprintf(&bf[offset], LBFSZ - offset, "Character devices:\n");
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if (offset >= LBFSZ)
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goto out;
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mutex_enter(&device_lock);
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for (i = 0; i < max_devsw_convs; i++) {
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if ((devsw_conv[i].d_name == NULL) ||
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(devsw_conv[i].d_cmajor == -1))
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continue;
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offset += snprintf(&bf[offset], LBFSZ - offset,
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"%3d %s\n", devsw_conv[i].d_cmajor, devsw_conv[i].d_name);
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if (offset >= LBFSZ) {
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mutex_exit(&device_lock);
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goto out;
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}
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}
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offset += snprintf(&bf[offset], LBFSZ - offset, "\nBlock devices:\n");
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if (offset >= LBFSZ) {
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mutex_exit(&device_lock);
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goto out;
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}
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for (i = 0; i < max_devsw_convs; i++) {
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if ((devsw_conv[i].d_name == NULL) ||
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(devsw_conv[i].d_bmajor == -1))
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continue;
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offset += snprintf(&bf[offset], LBFSZ - offset,
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"%3d %s\n", devsw_conv[i].d_bmajor, devsw_conv[i].d_name);
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if (offset >= LBFSZ) {
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mutex_exit(&device_lock);
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goto out;
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}
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}
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mutex_exit(&device_lock);
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error = uiomove_frombuf(bf, offset, uio);
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out:
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free(bf, M_TEMP);
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return error;
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}
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/*
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* Linux compatible /proc/stat. Only active when the -o linux
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* mountflag is used.
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*/
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int
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procfs_docpustat(struct lwp *curl, struct proc *p,
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struct pfsnode *pfs, struct uio *uio)
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{
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char *bf;
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int error;
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int len;
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#if defined(MULTIPROCESSOR)
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struct cpu_info *ci;
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CPU_INFO_ITERATOR cii;
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#endif
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int i;
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uint64_t nintr;
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uint64_t nswtch;
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error = ENAMETOOLONG;
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bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
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len = snprintf(bf, LBFSZ,
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"cpu %" PRIu64 " %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
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curcpu()->ci_schedstate.spc_cp_time[CP_USER],
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curcpu()->ci_schedstate.spc_cp_time[CP_NICE],
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curcpu()->ci_schedstate.spc_cp_time[CP_SYS] /*+ [CP_INTR]*/,
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curcpu()->ci_schedstate.spc_cp_time[CP_IDLE]);
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if (len == 0)
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goto out;
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#if defined(MULTIPROCESSOR)
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#define ALLCPUS CPU_INFO_FOREACH(cii, ci)
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#define CPUNAME ci
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#else
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#define ALLCPUS ; i < 1 ;
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#define CPUNAME curcpu()
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#endif
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i = 0;
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nintr = 0;
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nswtch = 0;
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for (ALLCPUS) {
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len += snprintf(&bf[len], LBFSZ - len,
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"cpu%d %" PRIu64 " %" PRIu64 " %" PRIu64 " %" PRIu64
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"\n", i,
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CPUNAME->ci_schedstate.spc_cp_time[CP_USER],
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CPUNAME->ci_schedstate.spc_cp_time[CP_NICE],
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CPUNAME->ci_schedstate.spc_cp_time[CP_SYS],
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CPUNAME->ci_schedstate.spc_cp_time[CP_IDLE]);
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if (len >= LBFSZ)
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goto out;
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i += 1;
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nintr += CPUNAME->ci_data.cpu_nintr;
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nswtch += CPUNAME->ci_data.cpu_nswtch;
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}
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len += snprintf(&bf[len], LBFSZ - len,
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"disk 0 0 0 0\n"
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"page %u %u\n"
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"swap %u %u\n"
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"intr %"PRIu64"\n"
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"ctxt %"PRIu64"\n"
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"btime %"PRId64"\n",
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uvmexp.pageins, uvmexp.pdpageouts,
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uvmexp.pgswapin, uvmexp.pgswapout,
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nintr,
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nswtch,
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boottime.tv_sec);
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if (len >= LBFSZ)
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goto out;
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error = uiomove_frombuf(bf, len, uio);
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out:
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free(bf, M_TEMP);
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return error;
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}
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/*
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* Linux compatible /proc/loadavg. Only active when the -o linux
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* mountflag is used.
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*/
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int
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procfs_doloadavg(struct lwp *curl, struct proc *p,
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struct pfsnode *pfs, struct uio *uio)
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{
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char *bf;
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int error;
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int len;
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error = ENAMETOOLONG;
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bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
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averunnable.fscale = FSCALE;
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len = snprintf(bf, LBFSZ,
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"%d.%02d %d.%02d %d.%02d %d/%d %d\n",
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(int)(averunnable.ldavg[0] / averunnable.fscale),
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(int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100),
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(int)(averunnable.ldavg[1] / averunnable.fscale),
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(int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100),
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(int)(averunnable.ldavg[2] / averunnable.fscale),
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(int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100),
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1, /* number of ONPROC processes */
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nprocs,
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30000); /* last pid */
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if (len == 0)
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goto out;
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error = uiomove_frombuf(bf, len, uio);
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out:
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free(bf, M_TEMP);
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return error;
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}
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/*
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* Linux compatible /proc/<pid>/statm. Only active when the -o linux
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* mountflag is used.
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*/
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int
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procfs_do_pid_statm(struct lwp *curl, struct lwp *l,
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struct pfsnode *pfs, struct uio *uio)
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{
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struct vmspace *vm;
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struct proc *p = l->l_proc;
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struct rusage *ru = &p->p_stats->p_ru;
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char *bf;
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int error;
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int len;
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bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
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/* XXX - we use values from vmspace, since dsl says that ru figures
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are always 0 except for zombies. See kvm_proc.c::kvm_getproc2() */
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if ((error = proc_vmspace_getref(p, &vm)) != 0) {
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goto out;
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}
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len = snprintf(bf, LBFSZ,
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"%lu %lu %lu %lu %lu %lu %lu\n",
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(unsigned long)(vm->vm_tsize + vm->vm_dsize + vm->vm_ssize), /* size */
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(unsigned long)(vm->vm_rssize), /* resident */
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(unsigned long)(ru->ru_ixrss), /* shared */
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(unsigned long)(vm->vm_tsize), /* text size in pages */
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(unsigned long)(vm->vm_dsize), /* data size in pages */
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(unsigned long)(vm->vm_ssize), /* stack size in pages */
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(unsigned long) 0);
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uvmspace_free(vm);
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if (len == 0)
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goto out;
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error = uiomove_frombuf(bf, len, uio);
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out:
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free(bf, M_TEMP);
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return error;
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}
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#define UTIME2TICKS(s,u) (((uint64_t)(s) * 1000000 + (u)) / 10000)
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/*
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* Linux compatible /proc/<pid>/stat. Only active when the -o linux
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* mountflag is used.
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*/
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int
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procfs_do_pid_stat(struct lwp *curl, struct lwp *l,
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struct pfsnode *pfs, struct uio *uio)
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{
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char *bf;
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struct proc *p = l->l_proc;
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int len;
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struct rusage *cru = &p->p_stats->p_cru;
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unsigned long stext = 0, etext = 0, sstack = 0;
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struct timeval rt;
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struct vmspace *vm;
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struct kinfo_proc2 ki;
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int error;
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bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
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|
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if ((error = proc_vmspace_getref(p, &vm)) != 0) {
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goto out;
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}
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get_proc_size_info(l, &stext, &etext, &sstack);
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|
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mutex_enter(proc_lock);
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mutex_enter(p->p_lock);
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|
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fill_kproc2(p, &ki, false);
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calcru(p, NULL, NULL, NULL, &rt);
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|
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len = snprintf(bf, LBFSZ,
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"%d (%s) %c %d %d %d %u %d "
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"%u "
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"%"PRIu64" %lu %"PRIu64" %lu %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64" "
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|
"%d %d %"PRIu64" "
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"%lld %"PRIu64" %"PRId64" %lu %"PRIu64" "
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"%lu %lu %lu "
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"%u %u "
|
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"%u %u %u %u "
|
|
"%"PRIu64" %"PRIu64" %"PRIu64" %d %"PRIu64"\n",
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|
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ki.p_pid, /* 1 pid */
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ki.p_comm, /* 2 tcomm */
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"0RRSTZXR8"[(ki.p_stat > 8) ? 0 : (int)ki.p_stat], /* 3 state */
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ki.p_ppid, /* 4 ppid */
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ki.p__pgid, /* 5 pgrp */
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ki.p_sid, /* 6 sid */
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(ki.p_tdev != (uint32_t)NODEV) ? ki.p_tdev : 0, /* 7 tty_nr */
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ki.p_tpgid, /* 8 tty_pgrp */
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ki.p_flag, /* 9 flags */
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|
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ki.p_uru_minflt, /* 10 min_flt */
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cru->ru_minflt,
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ki.p_uru_majflt, /* 12 maj_flt */
|
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cru->ru_majflt,
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UTIME2TICKS(ki.p_uutime_sec, ki.p_uutime_usec), /* 14 utime */
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UTIME2TICKS(ki.p_ustime_sec, ki.p_ustime_usec), /* 15 stime */
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UTIME2TICKS(cru->ru_utime.tv_sec, cru->ru_utime.tv_usec), /* 16 cutime */
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UTIME2TICKS(cru->ru_stime.tv_sec, cru->ru_stime.tv_usec), /* 17 cstime */
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|
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ki.p_priority, /* XXX: 18 priority */
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|
ki.p_nice - NZERO, /* 19 nice */
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|
ki.p_nlwps, /* 20 num_threads */
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|
|
|
(long long)rt.tv_sec,
|
|
UTIME2TICKS(ki.p_ustart_sec, ki.p_ustart_usec), /* 22 start_time */
|
|
ki.p_vm_msize, /* 23 vsize */
|
|
PGTOKB(ki.p_vm_rssize), /* 24 rss */
|
|
p->p_rlimit[RLIMIT_RSS].rlim_cur, /* 25 rsslim */
|
|
|
|
stext, /* 26 start_code */
|
|
etext, /* 27 end_code */
|
|
sstack, /* 28 start_stack */
|
|
|
|
0, /* XXX: 29 esp */
|
|
0, /* XXX: 30 eip */
|
|
|
|
ki.p_siglist.__bits[0], /* XXX: 31 pending */
|
|
0, /* XXX: 32 blocked */
|
|
ki.p_sigignore.__bits[0], /* 33 sigign */
|
|
ki.p_sigcatch.__bits[0], /* 34 sigcatch */
|
|
|
|
ki.p_wchan, /* 35 wchan */
|
|
ki.p_uru_nvcsw,
|
|
ki.p_uru_nivcsw,
|
|
ki.p_exitsig, /* 38 exit_signal */
|
|
ki.p_cpuid); /* 39 task_cpu */
|
|
|
|
mutex_exit(p->p_lock);
|
|
mutex_exit(proc_lock);
|
|
|
|
uvmspace_free(vm);
|
|
|
|
if (len == 0)
|
|
goto out;
|
|
|
|
error = uiomove_frombuf(bf, len, uio);
|
|
out:
|
|
free(bf, M_TEMP);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
procfs_docpuinfo(struct lwp *curl, struct proc *p,
|
|
struct pfsnode *pfs, struct uio *uio)
|
|
{
|
|
size_t len = LBFSZ;
|
|
char *bf = NULL;
|
|
int error;
|
|
|
|
do {
|
|
if (bf)
|
|
free(bf, M_TEMP);
|
|
bf = malloc(len, M_TEMP, M_WAITOK);
|
|
} while (procfs_getcpuinfstr(bf, &len) < 0);
|
|
|
|
if (len == 0) {
|
|
error = 0;
|
|
goto done;
|
|
}
|
|
|
|
error = uiomove_frombuf(bf, len, uio);
|
|
done:
|
|
free(bf, M_TEMP);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
procfs_douptime(struct lwp *curl, struct proc *p,
|
|
struct pfsnode *pfs, struct uio *uio)
|
|
{
|
|
char *bf;
|
|
int len;
|
|
struct timeval runtime;
|
|
u_int64_t idle;
|
|
int error = 0;
|
|
|
|
bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
|
|
|
|
microuptime(&runtime);
|
|
idle = curcpu()->ci_schedstate.spc_cp_time[CP_IDLE];
|
|
len = snprintf(bf, LBFSZ,
|
|
"%lld.%02lu %" PRIu64 ".%02" PRIu64 "\n",
|
|
(long long)runtime.tv_sec, (long)runtime.tv_usec / 10000,
|
|
idle / hz, (((idle % hz) * 100) / hz) % 100);
|
|
|
|
if (len == 0)
|
|
goto out;
|
|
|
|
error = uiomove_frombuf(bf, len, uio);
|
|
out:
|
|
free(bf, M_TEMP);
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
procfs_format_sfs(char **mtab, size_t *mlen, char *buf, size_t blen,
|
|
const struct statvfs *sfs, struct lwp *curl, int suser)
|
|
{
|
|
const char *fsname;
|
|
|
|
/* 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";
|
|
|
|
blen = snprintf(buf, blen, "%s %s %s %s%s%s%s%s%s 0 0\n",
|
|
sfs->f_mntfromname, sfs->f_mntonname, fsname,
|
|
(sfs->f_flag & ST_RDONLY) ? "ro" : "rw",
|
|
(sfs->f_flag & ST_NOSUID) ? ",nosuid" : "",
|
|
(sfs->f_flag & ST_NOEXEC) ? ",noexec" : "",
|
|
(sfs->f_flag & ST_NODEV) ? ",nodev" : "",
|
|
(sfs->f_flag & ST_SYNCHRONOUS) ? ",sync" : "",
|
|
(sfs->f_flag & ST_NOATIME) ? ",noatime" : "");
|
|
|
|
*mtab = realloc(*mtab, *mlen + blen, M_TEMP, M_WAITOK);
|
|
memcpy(*mtab + *mlen, buf, blen);
|
|
*mlen += blen;
|
|
return sfs->f_mntonname[0] == '/' && sfs->f_mntonname[1] == '\0';
|
|
}
|
|
|
|
int
|
|
procfs_domounts(struct lwp *curl, struct proc *p,
|
|
struct pfsnode *pfs, struct uio *uio)
|
|
{
|
|
char *bf, *mtab = NULL;
|
|
size_t mtabsz = 0;
|
|
struct mount *mp, *nmp;
|
|
int error = 0, root = 0;
|
|
struct cwdinfo *cwdi = curl->l_proc->p_cwdi;
|
|
|
|
bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
|
|
|
|
mutex_enter(&mountlist_lock);
|
|
for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
|
|
struct statvfs sfs;
|
|
|
|
if (vfs_busy(mp, &nmp))
|
|
continue;
|
|
|
|
if ((error = dostatvfs(mp, &sfs, curl, MNT_WAIT, 0)) == 0)
|
|
root |= procfs_format_sfs(&mtab, &mtabsz, bf, LBFSZ,
|
|
&sfs, curl, 0);
|
|
|
|
vfs_unbusy(mp, false, &nmp);
|
|
}
|
|
mutex_exit(&mountlist_lock);
|
|
|
|
/*
|
|
* If we are inside a chroot that is not itself a mount point,
|
|
* fake a root entry.
|
|
*/
|
|
if (!root && cwdi->cwdi_rdir)
|
|
(void)procfs_format_sfs(&mtab, &mtabsz, bf, LBFSZ,
|
|
&cwdi->cwdi_rdir->v_mount->mnt_stat, curl, 1);
|
|
|
|
free(bf, M_TEMP);
|
|
|
|
if (mtabsz > 0) {
|
|
error = uiomove_frombuf(mtab, mtabsz, uio);
|
|
free(mtab, M_TEMP);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Linux compatible /proc/version. Only active when the -o linux
|
|
* mountflag is used.
|
|
*/
|
|
int
|
|
procfs_doversion(struct lwp *curl, struct proc *p,
|
|
struct pfsnode *pfs, struct uio *uio)
|
|
{
|
|
char *bf;
|
|
char lostype[20], losrelease[20], lversion[80];
|
|
const char *postype, *posrelease, *pversion;
|
|
const char *emulname = curlwp->l_proc->p_emul->e_name;
|
|
int len;
|
|
int error = 0;
|
|
int nm[4];
|
|
size_t buflen;
|
|
|
|
CTASSERT(EMUL_LINUX_KERN_OSTYPE == EMUL_LINUX32_KERN_OSTYPE);
|
|
CTASSERT(EMUL_LINUX_KERN_OSRELEASE == EMUL_LINUX32_KERN_OSRELEASE);
|
|
CTASSERT(EMUL_LINUX_KERN_VERSION == EMUL_LINUX32_KERN_VERSION);
|
|
|
|
bf = malloc(LBFSZ, M_TEMP, M_WAITOK);
|
|
|
|
sysctl_lock(false);
|
|
|
|
if (strncmp(emulname, "linux", 5) == 0) {
|
|
/*
|
|
* Lookup the emulation ostype, osrelease, and version.
|
|
* Since compat_linux and compat_linux32 can be built as
|
|
* modules, we use sysctl to obtain the values instead of
|
|
* using the symbols directly.
|
|
*/
|
|
|
|
if (strcmp(emulname, "linux32") == 0) {
|
|
nm[0] = CTL_EMUL;
|
|
nm[1] = EMUL_LINUX32;
|
|
nm[2] = EMUL_LINUX32_KERN;
|
|
} else {
|
|
nm[0] = CTL_EMUL;
|
|
nm[1] = EMUL_LINUX;
|
|
nm[2] = EMUL_LINUX_KERN;
|
|
}
|
|
|
|
nm[3] = EMUL_LINUX_KERN_OSTYPE;
|
|
buflen = sizeof(lostype);
|
|
error = sysctl_dispatch(nm, __arraycount(nm),
|
|
lostype, &buflen,
|
|
NULL, 0, NULL, NULL, NULL);
|
|
if (error)
|
|
goto out;
|
|
|
|
nm[3] = EMUL_LINUX_KERN_OSRELEASE;
|
|
buflen = sizeof(losrelease);
|
|
error = sysctl_dispatch(nm, __arraycount(nm),
|
|
losrelease, &buflen,
|
|
NULL, 0, NULL, NULL, NULL);
|
|
if (error)
|
|
goto out;
|
|
|
|
nm[3] = EMUL_LINUX_KERN_VERSION;
|
|
buflen = sizeof(lversion);
|
|
error = sysctl_dispatch(nm, __arraycount(nm),
|
|
lversion, &buflen,
|
|
NULL, 0, NULL, NULL, NULL);
|
|
if (error)
|
|
goto out;
|
|
|
|
postype = lostype;
|
|
posrelease = losrelease;
|
|
pversion = lversion;
|
|
} else {
|
|
postype = ostype;
|
|
posrelease = osrelease;
|
|
strlcpy(lversion, version, sizeof(lversion));
|
|
if (strchr(lversion, '\n'))
|
|
*strchr(lversion, '\n') = '\0';
|
|
pversion = lversion;
|
|
}
|
|
|
|
len = snprintf(bf, LBFSZ,
|
|
"%s version %s (%s@localhost) (gcc version %s) %s\n",
|
|
postype, posrelease, emulname,
|
|
#ifdef __VERSION__
|
|
__VERSION__,
|
|
#else
|
|
"unknown",
|
|
#endif
|
|
pversion);
|
|
|
|
if (len == 0)
|
|
goto out;
|
|
|
|
error = uiomove_frombuf(bf, len, uio);
|
|
out:
|
|
free(bf, M_TEMP);
|
|
sysctl_unlock();
|
|
return error;
|
|
}
|