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freebsd-skq/sys/compat/linprocfs/linprocfs.c
netchild 59692ae939 MFC: 
- linux_misc.c 1.179
  Don't copyout/do unneccesary work if the buffer is a NULL pointer.

  Noticed by:     Dmitry Ganenko <dima@apk-inform.com>
  Reviewed by:    rdivacky (the original version as in emulation@)

- linprocfs.c 1.96:
  Improve linprovfs to provide/fix the
   - process state (idle, sleeping, running, ...) [1]
   - the process group ID of the process which owns the connected tty
   - some page fault stats
   - time spend in kernel/userland
   - priority/nice value
   - starttime [1]
   - memory/swap stats
   - scheduling policy

  Additionally add some new fields and correct some not filled out ones.

  This brings us down to 15 dummy fields.

  The fields marked with [1] are needed to get Oracle 10 running. The starttime
  field is not completely right, since it displays the _same_ starttime for
  _every_ process, but at least it is not 0 and Oracle accepts this.

  Noticed by:     Dmitry Ganenko <dima@apk-inform.com> [1]
  Reviewed by:    des, rdivacky

- pseudofs_vnops.c 1.60:
  Correctly calculate a buffer length. It was off by one so a read() returned
  one byte less than needed.

  Noticed by:     Dmitry Ganenko <dima@apk-inform.com>
  Testcase by:    Dmitry Ganenko <dima@apk-inform.com>
  Reviewed by:    des
  Submitted by:   rdivacky
  Sponsored by:   Google SoC 2006

All of those are needed for Oracle 10. Since previous Oracle versions work
just fine without those fixes, these patches can be seen as regression fixes
too. Because of this I think they are a RELENG_6_x candidate (MFC reminder
set).

MFC after:	1 month
2006-07-08 14:06:56 +00:00

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/*-
* Copyright (c) 2000 Dag-Erling Coïdan Smørgrav
* Copyright (c) 1999 Pierre Beyssac
* Copyright (c) 1993 Jan-Simon Pendry
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry.
*
* 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.
*
* @(#)procfs_status.c 8.4 (Berkeley) 6/15/94
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/blist.h>
#include <sys/conf.h>
#include <sys/exec.h>
#include <sys/filedesc.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/linker.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sbuf.h>
#include <sys/smp.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/tty.h>
#include <sys/user.h>
#include <sys/vmmeter.h>
#include <sys/vnode.h>
#include <net/if.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/swap_pager.h>
#include <machine/clock.h>
#ifdef __alpha__
#include <machine/alpha_cpu.h>
#include <machine/cpuconf.h>
#include <machine/rpb.h>
extern int ncpus;
#endif /* __alpha__ */
#if defined(__i386__) || defined(__amd64__)
#include <machine/cputypes.h>
#include <machine/md_var.h>
#endif /* __i386__ || __amd64__ */
#include "opt_compat.h"
#ifdef COMPAT_LINUX32 /* XXX */
#include <machine/../linux32/linux.h>
#else
#include <machine/../linux/linux.h>
#endif
#include <compat/linux/linux_ioctl.h>
#include <compat/linux/linux_mib.h>
#include <compat/linux/linux_util.h>
#include <fs/pseudofs/pseudofs.h>
#include <fs/procfs/procfs.h>
/*
* Various conversion macros
*/
#define T2J(x) (((x) * 100UL) / (stathz ? stathz : hz)) /* ticks to jiffies */
#define T2S(x) ((x) / (stathz ? stathz : hz)) /* ticks to seconds */
#define B2K(x) ((x) >> 10) /* bytes to kbytes */
#define B2P(x) ((x) >> PAGE_SHIFT) /* bytes to pages */
#define P2B(x) ((x) << PAGE_SHIFT) /* pages to bytes */
#define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* pages to kbytes */
/**
* @brief Mapping of ki_stat in struct kinfo_proc to the linux state
*
* The linux procfs state field displays one of the characters RSDZTW to
* denote running, sleeping in an interruptible wait, waiting in an
* uninteruptible disk sleep, a zombie process, process is being traced
* or stopped, or process is paging respectively.
*
* Our struct kinfo_proc contains the variable ki_stat which contains a
* value out of SIDL, SRUN, SSLEEP, SSTOP, SZOMB, SWAIT and SLOCK.
*
* This character array is used with ki_stati-1 as an index and tries to
* map our states to suitable linux states.
*/
static char *linux_state = "RRSTZDD";
/*
* Filler function for proc/meminfo
*/
static int
linprocfs_domeminfo(PFS_FILL_ARGS)
{
unsigned long memtotal; /* total memory in bytes */
unsigned long memused; /* used memory in bytes */
unsigned long memfree; /* free memory in bytes */
unsigned long memshared; /* shared memory ??? */
unsigned long buffers, cached; /* buffer / cache memory ??? */
unsigned long long swaptotal; /* total swap space in bytes */
unsigned long long swapused; /* used swap space in bytes */
unsigned long long swapfree; /* free swap space in bytes */
vm_object_t object;
int i, j;
memtotal = physmem * PAGE_SIZE;
/*
* The correct thing here would be:
*
memfree = cnt.v_free_count * PAGE_SIZE;
memused = memtotal - memfree;
*
* but it might mislead linux binaries into thinking there
* is very little memory left, so we cheat and tell them that
* all memory that isn't wired down is free.
*/
memused = cnt.v_wire_count * PAGE_SIZE;
memfree = memtotal - memused;
swap_pager_status(&i, &j);
swaptotal = (unsigned long long)i * PAGE_SIZE;
swapused = (unsigned long long)j * PAGE_SIZE;
swapfree = swaptotal - swapused;
memshared = 0;
mtx_lock(&vm_object_list_mtx);
TAILQ_FOREACH(object, &vm_object_list, object_list)
if (object->shadow_count > 1)
memshared += object->resident_page_count;
mtx_unlock(&vm_object_list_mtx);
memshared *= PAGE_SIZE;
/*
* We'd love to be able to write:
*
buffers = bufspace;
*
* but bufspace is internal to vfs_bio.c and we don't feel
* like unstaticizing it just for linprocfs's sake.
*/
buffers = 0;
cached = cnt.v_cache_count * PAGE_SIZE;
sbuf_printf(sb,
" total: used: free: shared: buffers: cached:\n"
"Mem: %lu %lu %lu %lu %lu %lu\n"
"Swap: %llu %llu %llu\n"
"MemTotal: %9lu kB\n"
"MemFree: %9lu kB\n"
"MemShared:%9lu kB\n"
"Buffers: %9lu kB\n"
"Cached: %9lu kB\n"
"SwapTotal:%9llu kB\n"
"SwapFree: %9llu kB\n",
memtotal, memused, memfree, memshared, buffers, cached,
swaptotal, swapused, swapfree,
B2K(memtotal), B2K(memfree),
B2K(memshared), B2K(buffers), B2K(cached),
B2K(swaptotal), B2K(swapfree));
return (0);
}
#ifdef __alpha__
extern struct rpb *hwrpb;
/*
* Filler function for proc/cpuinfo (Alpha version)
*/
static int
linprocfs_docpuinfo(PFS_FILL_ARGS)
{
u_int64_t type, major;
struct pcs *pcsp;
const char *model, *sysname;
static const char *cpuname[] = {
"EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
"EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL"
};
pcsp = LOCATE_PCS(hwrpb, hwrpb->rpb_primary_cpu_id);
type = pcsp->pcs_proc_type;
major = (type & PCS_PROC_MAJOR) >> PCS_PROC_MAJORSHIFT;
if (major < sizeof(cpuname)/sizeof(char *)) {
model = cpuname[major - 1];
} else {
model = "unknown";
}
sysname = alpha_dsr_sysname();
sbuf_printf(sb,
"cpu\t\t\t: Alpha\n"
"cpu model\t\t: %s\n"
"cpu variation\t\t: %ld\n"
"cpu revision\t\t: %d\n"
"cpu serial number\t: %s\n"
"system type\t\t: %s\n"
"system variation\t: %s\n"
"system revision\t\t: %d\n"
"system serial number\t: %s\n"
"cycle frequency [Hz]\t: %lu\n"
"timer frequency [Hz]\t: %u\n"
"page size [bytes]\t: %ld\n"
"phys. address bits\t: %ld\n"
"max. addr. space #\t: %ld\n"
"BogoMIPS\t\t: %u.%02u\n"
"kernel unaligned acc\t: %d (pc=%x,va=%x)\n"
"user unaligned acc\t: %d (pc=%x,va=%x)\n"
"platform string\t\t: %s\n"
"cpus detected\t\t: %d\n"
,
model,
pcsp->pcs_proc_var,
*(int *)hwrpb->rpb_revision,
" ",
" ",
"0",
0,
" ",
hwrpb->rpb_cc_freq,
hz,
hwrpb->rpb_page_size,
hwrpb->rpb_phys_addr_size,
hwrpb->rpb_max_asn,
0, 0,
0, 0, 0,
0, 0, 0,
sysname,
ncpus);
return (0);
}
#endif /* __alpha__ */
#if defined(__i386__) || defined(__amd64__)
/*
* Filler function for proc/cpuinfo (i386 & amd64 version)
*/
static int
linprocfs_docpuinfo(PFS_FILL_ARGS)
{
int hw_model[2];
char model[128];
size_t size;
int class, fqmhz, fqkhz;
int i;
/*
* We default the flags to include all non-conflicting flags,
* and the Intel versions of conflicting flags.
*/
static char *flags[] = {
"fpu", "vme", "de", "pse", "tsc",
"msr", "pae", "mce", "cx8", "apic",
"sep", "sep", "mtrr", "pge", "mca",
"cmov", "pat", "pse36", "pn", "b19",
"b20", "b21", "mmxext", "mmx", "fxsr",
"xmm", "b26", "b27", "b28", "b29",
"3dnowext", "3dnow"
};
switch (cpu_class) {
#ifdef __i386__
case CPUCLASS_286:
class = 2;
break;
case CPUCLASS_386:
class = 3;
break;
case CPUCLASS_486:
class = 4;
break;
case CPUCLASS_586:
class = 5;
break;
case CPUCLASS_686:
class = 6;
break;
default:
class = 0;
break;
#else /* __amd64__ */
default:
class = 15;
break;
#endif
}
hw_model[0] = CTL_HW;
hw_model[1] = HW_MODEL;
model[0] = '\0';
size = sizeof(model);
if (kernel_sysctl(td, hw_model, 2, &model, &size, 0, 0, 0, 0) != 0)
strcpy(model, "unknown");
for (i = 0; i < mp_ncpus; ++i) {
sbuf_printf(sb,
"processor\t: %d\n"
"vendor_id\t: %.20s\n"
"cpu family\t: %d\n"
"model\t\t: %d\n"
"model name\t: %s\n"
"stepping\t: %d\n",
i, cpu_vendor, class, cpu, model, cpu_id & 0xf);
/* XXX per-cpu vendor / class / model / id? */
}
sbuf_cat(sb,
"flags\t\t:");
if (!strcmp(cpu_vendor, "AuthenticAMD") && (class < 6)) {
flags[16] = "fcmov";
} else if (!strcmp(cpu_vendor, "CyrixInstead")) {
flags[24] = "cxmmx";
}
for (i = 0; i < 32; i++)
if (cpu_feature & (1 << i))
sbuf_printf(sb, " %s", flags[i]);
sbuf_cat(sb, "\n");
if (class >= 5) {
fqmhz = (tsc_freq + 4999) / 1000000;
fqkhz = ((tsc_freq + 4999) / 10000) % 100;
sbuf_printf(sb,
"cpu MHz\t\t: %d.%02d\n"
"bogomips\t: %d.%02d\n",
fqmhz, fqkhz, fqmhz, fqkhz);
}
return (0);
}
#endif /* __i386__ || __amd64__ */
/*
* Filler function for proc/mtab
*
* This file doesn't exist in Linux' procfs, but is included here so
* users can symlink /compat/linux/etc/mtab to /proc/mtab
*/
static int
linprocfs_domtab(PFS_FILL_ARGS)
{
struct nameidata nd;
struct mount *mp;
const char *lep;
char *dlep, *flep, *mntto, *mntfrom, *fstype;
size_t lep_len;
int error;
/* resolve symlinks etc. in the emulation tree prefix */
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path, td);
flep = NULL;
if (namei(&nd) != 0 || vn_fullpath(td, nd.ni_vp, &dlep, &flep) != 0)
lep = linux_emul_path;
else
lep = dlep;
lep_len = strlen(lep);
mtx_lock(&mountlist_mtx);
error = 0;
TAILQ_FOREACH(mp, &mountlist, mnt_list) {
/* determine device name */
mntfrom = mp->mnt_stat.f_mntfromname;
/* determine mount point */
mntto = mp->mnt_stat.f_mntonname;
if (strncmp(mntto, lep, lep_len) == 0 &&
mntto[lep_len] == '/')
mntto += lep_len;
/* determine fs type */
fstype = mp->mnt_stat.f_fstypename;
if (strcmp(fstype, pn->pn_info->pi_name) == 0)
mntfrom = fstype = "proc";
else if (strcmp(fstype, "procfs") == 0)
continue;
if (strcmp(fstype, "linsysfs") == 0) {
sbuf_printf(sb, "/sys %s sysfs %s", mntto,
mp->mnt_stat.f_flags & MNT_RDONLY ? "ro" : "rw");
} else {
sbuf_printf(sb, "%s %s %s %s", mntfrom, mntto, fstype,
mp->mnt_stat.f_flags & MNT_RDONLY ? "ro" : "rw");
}
#define ADD_OPTION(opt, name) \
if (mp->mnt_stat.f_flags & (opt)) sbuf_printf(sb, "," name);
ADD_OPTION(MNT_SYNCHRONOUS, "sync");
ADD_OPTION(MNT_NOEXEC, "noexec");
ADD_OPTION(MNT_NOSUID, "nosuid");
ADD_OPTION(MNT_UNION, "union");
ADD_OPTION(MNT_ASYNC, "async");
ADD_OPTION(MNT_SUIDDIR, "suiddir");
ADD_OPTION(MNT_NOSYMFOLLOW, "nosymfollow");
ADD_OPTION(MNT_NOATIME, "noatime");
#undef ADD_OPTION
/* a real Linux mtab will also show NFS options */
sbuf_printf(sb, " 0 0\n");
}
mtx_unlock(&mountlist_mtx);
if (flep != NULL)
free(flep, M_TEMP);
return (error);
}
/*
* Filler function for proc/stat
*/
static int
linprocfs_dostat(PFS_FILL_ARGS)
{
int i;
sbuf_printf(sb, "cpu %ld %ld %ld %ld\n",
T2J(cp_time[CP_USER]),
T2J(cp_time[CP_NICE]),
T2J(cp_time[CP_SYS] /*+ cp_time[CP_INTR]*/),
T2J(cp_time[CP_IDLE]));
for (i = 0; i < mp_ncpus; ++i)
sbuf_printf(sb, "cpu%d %ld %ld %ld %ld\n", i,
T2J(cp_time[CP_USER]) / mp_ncpus,
T2J(cp_time[CP_NICE]) / mp_ncpus,
T2J(cp_time[CP_SYS]) / mp_ncpus,
T2J(cp_time[CP_IDLE]) / mp_ncpus);
sbuf_printf(sb,
"disk 0 0 0 0\n"
"page %u %u\n"
"swap %u %u\n"
"intr %u\n"
"ctxt %u\n"
"btime %lld\n",
cnt.v_vnodepgsin,
cnt.v_vnodepgsout,
cnt.v_swappgsin,
cnt.v_swappgsout,
cnt.v_intr,
cnt.v_swtch,
(long long)boottime.tv_sec);
return (0);
}
/*
* Filler function for proc/uptime
*/
static int
linprocfs_douptime(PFS_FILL_ARGS)
{
struct timeval tv;
getmicrouptime(&tv);
sbuf_printf(sb, "%lld.%02ld %ld.%02ld\n",
(long long)tv.tv_sec, tv.tv_usec / 10000,
T2S(cp_time[CP_IDLE]), T2J(cp_time[CP_IDLE]) % 100);
return (0);
}
/*
* Filler function for proc/version
*/
static int
linprocfs_doversion(PFS_FILL_ARGS)
{
char osname[LINUX_MAX_UTSNAME];
char osrelease[LINUX_MAX_UTSNAME];
linux_get_osname(td, osname);
linux_get_osrelease(td, osrelease);
sbuf_printf(sb,
"%s version %s (des@freebsd.org) (gcc version " __VERSION__ ")"
" #4 Sun Dec 18 04:30:00 CET 1977\n", osname, osrelease);
return (0);
}
/*
* Filler function for proc/loadavg
*/
static int
linprocfs_doloadavg(PFS_FILL_ARGS)
{
sbuf_printf(sb,
"%d.%02d %d.%02d %d.%02d %d/%d %d\n",
(int)(averunnable.ldavg[0] / averunnable.fscale),
(int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100),
(int)(averunnable.ldavg[1] / averunnable.fscale),
(int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100),
(int)(averunnable.ldavg[2] / averunnable.fscale),
(int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100),
1, /* number of running tasks */
nprocs, /* number of tasks */
lastpid /* the last pid */
);
return (0);
}
/*
* Filler function for proc/pid/stat
*/
static int
linprocfs_doprocstat(PFS_FILL_ARGS)
{
struct kinfo_proc kp;
PROC_LOCK(p);
fill_kinfo_proc(p, &kp);
sbuf_printf(sb, "%d", p->p_pid);
#define PS_ADD(name, fmt, arg) sbuf_printf(sb, " " fmt, arg)
PS_ADD("comm", "(%s)", p->p_comm);
KASSERT(kp.ki_stat <= sizeof(linux_state),
("linprocfs: don't know how to handle unknown FreeBSD state"));
PS_ADD("state", "%c", linux_state[kp.ki_stat - 1]);
PS_ADD("ppid", "%d", p->p_pptr ? p->p_pptr->p_pid : 0);
PS_ADD("pgrp", "%d", p->p_pgid);
PS_ADD("session", "%d", p->p_session->s_sid);
PROC_UNLOCK(p);
PS_ADD("tty", "%d", 0); /* XXX */
PS_ADD("tpgid", "%d", kp.ki_tpgid);
PS_ADD("flags", "%u", 0); /* XXX */
PS_ADD("minflt", "%lu", kp.ki_rusage.ru_minflt);
PS_ADD("cminflt", "%lu", kp.ki_rusage_ch.ru_minflt);
PS_ADD("majflt", "%lu", kp.ki_rusage.ru_majflt);
PS_ADD("cmajflt", "%lu", kp.ki_rusage_ch.ru_majflt);
PS_ADD("utime", "%ld", T2J(tvtohz(&kp.ki_rusage.ru_utime)));
PS_ADD("stime", "%ld", T2J(tvtohz(&kp.ki_rusage.ru_stime)));
PS_ADD("cutime", "%ld", T2J(tvtohz(&kp.ki_rusage_ch.ru_utime)));
PS_ADD("cstime", "%ld", T2J(tvtohz(&kp.ki_rusage_ch.ru_stime)));
PS_ADD("priority", "%d", kp.ki_pri.pri_user);
PS_ADD("nice", "%d", kp.ki_nice); /* 19 (nicest) to -19 */
PS_ADD("0", "%d", 0); /* removed field */
PS_ADD("itrealvalue", "%d", 0); /* XXX */
/* XXX: starttime is not right, it is the _same_ for _every_ process.
It should be the number of jiffies between system boot and process
start. */
PS_ADD("starttime", "%lu", T2J(tvtohz(&kp.ki_start)));
PS_ADD("vsize", "%ju", P2K((uintmax_t)kp.ki_size));
PS_ADD("rss", "%ju", (uintmax_t)kp.ki_rssize);
PS_ADD("rlim", "%lu", kp.ki_rusage.ru_maxrss);
PS_ADD("startcode", "%u", (unsigned)0);
PS_ADD("endcode", "%u", 0); /* XXX */
PS_ADD("startstack", "%u", 0); /* XXX */
PS_ADD("kstkesp", "%u", 0); /* XXX */
PS_ADD("kstkeip", "%u", 0); /* XXX */
PS_ADD("signal", "%u", 0); /* XXX */
PS_ADD("blocked", "%u", 0); /* XXX */
PS_ADD("sigignore", "%u", 0); /* XXX */
PS_ADD("sigcatch", "%u", 0); /* XXX */
PS_ADD("wchan", "%u", 0); /* XXX */
PS_ADD("nswap", "%lu", kp.ki_rusage.ru_nswap);
PS_ADD("cnswap", "%lu", kp.ki_rusage_ch.ru_nswap);
PS_ADD("exitsignal", "%d", 0); /* XXX */
PS_ADD("processor", "%u", kp.ki_lastcpu);
PS_ADD("rt_priority", "%u", 0); /* XXX */ /* >= 2.5.19 */
PS_ADD("policy", "%u", kp.ki_pri.pri_class); /* >= 2.5.19 */
#undef PS_ADD
sbuf_putc(sb, '\n');
return (0);
}
/*
* Filler function for proc/pid/statm
*/
static int
linprocfs_doprocstatm(PFS_FILL_ARGS)
{
struct kinfo_proc kp;
segsz_t lsize;
PROC_LOCK(p);
fill_kinfo_proc(p, &kp);
PROC_UNLOCK(p);
/*
* See comments in linprocfs_doprocstatus() regarding the
* computation of lsize.
*/
/* size resident share trs drs lrs dt */
sbuf_printf(sb, "%ju ", B2P((uintmax_t)kp.ki_size));
sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_rssize);
sbuf_printf(sb, "%ju ", (uintmax_t)0); /* XXX */
sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_tsize);
sbuf_printf(sb, "%ju ", (uintmax_t)(kp.ki_dsize + kp.ki_ssize));
lsize = B2P(kp.ki_size) - kp.ki_dsize -
kp.ki_ssize - kp.ki_tsize - 1;
sbuf_printf(sb, "%ju ", (uintmax_t)lsize);
sbuf_printf(sb, "%ju\n", (uintmax_t)0); /* XXX */
return (0);
}
/*
* Filler function for proc/pid/status
*/
static int
linprocfs_doprocstatus(PFS_FILL_ARGS)
{
struct kinfo_proc kp;
char *state;
segsz_t lsize;
struct thread *td2;
struct sigacts *ps;
int i;
PROC_LOCK(p);
td2 = FIRST_THREAD_IN_PROC(p); /* XXXKSE pretend only one thread */
if (P_SHOULDSTOP(p)) {
state = "T (stopped)";
} else {
mtx_lock_spin(&sched_lock);
switch(p->p_state) {
case PRS_NEW:
state = "I (idle)";
break;
case PRS_NORMAL:
if (p->p_flag & P_WEXIT) {
state = "X (exiting)";
break;
}
switch(td2->td_state) {
case TDS_INHIBITED:
state = "S (sleeping)";
break;
case TDS_RUNQ:
case TDS_RUNNING:
state = "R (running)";
break;
default:
state = "? (unknown)";
break;
}
break;
case PRS_ZOMBIE:
state = "Z (zombie)";
break;
default:
state = "? (unknown)";
break;
}
mtx_unlock_spin(&sched_lock);
}
fill_kinfo_proc(p, &kp);
sbuf_printf(sb, "Name:\t%s\n", p->p_comm); /* XXX escape */
sbuf_printf(sb, "State:\t%s\n", state);
/*
* Credentials
*/
sbuf_printf(sb, "Pid:\t%d\n", p->p_pid);
sbuf_printf(sb, "PPid:\t%d\n", p->p_pptr ?
p->p_pptr->p_pid : 0);
sbuf_printf(sb, "Uid:\t%d %d %d %d\n", p->p_ucred->cr_ruid,
p->p_ucred->cr_uid,
p->p_ucred->cr_svuid,
/* FreeBSD doesn't have fsuid */
p->p_ucred->cr_uid);
sbuf_printf(sb, "Gid:\t%d %d %d %d\n", p->p_ucred->cr_rgid,
p->p_ucred->cr_gid,
p->p_ucred->cr_svgid,
/* FreeBSD doesn't have fsgid */
p->p_ucred->cr_gid);
sbuf_cat(sb, "Groups:\t");
for (i = 0; i < p->p_ucred->cr_ngroups; i++)
sbuf_printf(sb, "%d ", p->p_ucred->cr_groups[i]);
PROC_UNLOCK(p);
sbuf_putc(sb, '\n');
/*
* Memory
*
* While our approximation of VmLib may not be accurate (I
* don't know of a simple way to verify it, and I'm not sure
* it has much meaning anyway), I believe it's good enough.
*
* The same code that could (I think) accurately compute VmLib
* could also compute VmLck, but I don't really care enough to
* implement it. Submissions are welcome.
*/
sbuf_printf(sb, "VmSize:\t%8ju kB\n", B2K((uintmax_t)kp.ki_size));
sbuf_printf(sb, "VmLck:\t%8u kB\n", P2K(0)); /* XXX */
sbuf_printf(sb, "VmRss:\t%8ju kB\n", P2K((uintmax_t)kp.ki_rssize));
sbuf_printf(sb, "VmData:\t%8ju kB\n", P2K((uintmax_t)kp.ki_dsize));
sbuf_printf(sb, "VmStk:\t%8ju kB\n", P2K((uintmax_t)kp.ki_ssize));
sbuf_printf(sb, "VmExe:\t%8ju kB\n", P2K((uintmax_t)kp.ki_tsize));
lsize = B2P(kp.ki_size) - kp.ki_dsize -
kp.ki_ssize - kp.ki_tsize - 1;
sbuf_printf(sb, "VmLib:\t%8ju kB\n", P2K((uintmax_t)lsize));
/*
* Signal masks
*
* We support up to 128 signals, while Linux supports 32,
* but we only define 32 (the same 32 as Linux, to boot), so
* just show the lower 32 bits of each mask. XXX hack.
*
* NB: on certain platforms (Sparc at least) Linux actually
* supports 64 signals, but this code is a long way from
* running on anything but i386, so ignore that for now.
*/
PROC_LOCK(p);
sbuf_printf(sb, "SigPnd:\t%08x\n", p->p_siglist.__bits[0]);
/*
* I can't seem to find out where the signal mask is in
* relation to struct proc, so SigBlk is left unimplemented.
*/
sbuf_printf(sb, "SigBlk:\t%08x\n", 0); /* XXX */
ps = p->p_sigacts;
mtx_lock(&ps->ps_mtx);
sbuf_printf(sb, "SigIgn:\t%08x\n", ps->ps_sigignore.__bits[0]);
sbuf_printf(sb, "SigCgt:\t%08x\n", ps->ps_sigcatch.__bits[0]);
mtx_unlock(&ps->ps_mtx);
PROC_UNLOCK(p);
/*
* Linux also prints the capability masks, but we don't have
* capabilities yet, and when we do get them they're likely to
* be meaningless to Linux programs, so we lie. XXX
*/
sbuf_printf(sb, "CapInh:\t%016x\n", 0);
sbuf_printf(sb, "CapPrm:\t%016x\n", 0);
sbuf_printf(sb, "CapEff:\t%016x\n", 0);
return (0);
}
/*
* Filler function for proc/pid/cwd
*/
static int
linprocfs_doproccwd(PFS_FILL_ARGS)
{
char *fullpath = "unknown";
char *freepath = NULL;
vn_fullpath(td, p->p_fd->fd_cdir, &fullpath, &freepath);
sbuf_printf(sb, "%s", fullpath);
if (freepath)
free(freepath, M_TEMP);
return (0);
}
/*
* Filler function for proc/pid/root
*/
static int
linprocfs_doprocroot(PFS_FILL_ARGS)
{
struct vnode *rvp;
char *fullpath = "unknown";
char *freepath = NULL;
rvp = jailed(p->p_ucred) ? p->p_fd->fd_jdir : p->p_fd->fd_rdir;
vn_fullpath(td, rvp, &fullpath, &freepath);
sbuf_printf(sb, "%s", fullpath);
if (freepath)
free(freepath, M_TEMP);
return (0);
}
/*
* Filler function for proc/pid/cmdline
*/
static int
linprocfs_doproccmdline(PFS_FILL_ARGS)
{
struct ps_strings pstr;
char **ps_argvstr;
int error, i;
/*
* If we are using the ps/cmdline caching, use that. Otherwise
* revert back to the old way which only implements full cmdline
* for the currept process and just p->p_comm for all other
* processes.
* Note that if the argv is no longer available, we deliberately
* don't fall back on p->p_comm or return an error: the authentic
* Linux behaviour is to return zero-length in this case.
*/
PROC_LOCK(p);
if (p->p_args && p_cansee(td, p) == 0) {
sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length);
PROC_UNLOCK(p);
} else if (p != td->td_proc) {
PROC_UNLOCK(p);
sbuf_printf(sb, "%.*s", MAXCOMLEN, p->p_comm);
} else {
PROC_UNLOCK(p);
error = copyin((void *)p->p_sysent->sv_psstrings, &pstr,
sizeof(pstr));
if (error)
return (error);
if (pstr.ps_nargvstr > ARG_MAX)
return (E2BIG);
ps_argvstr = malloc(pstr.ps_nargvstr * sizeof(char *),
M_TEMP, M_WAITOK);
error = copyin((void *)pstr.ps_argvstr, ps_argvstr,
pstr.ps_nargvstr * sizeof(char *));
if (error) {
free(ps_argvstr, M_TEMP);
return (error);
}
for (i = 0; i < pstr.ps_nargvstr; i++) {
sbuf_copyin(sb, ps_argvstr[i], 0);
sbuf_printf(sb, "%c", '\0');
}
free(ps_argvstr, M_TEMP);
}
return (0);
}
/*
* Filler function for proc/pid/environ
*/
static int
linprocfs_doprocenviron(PFS_FILL_ARGS)
{
sbuf_printf(sb, "doprocenviron\n%c", '\0');
return (0);
}
/*
* Filler function for proc/pid/maps
*/
static int
linprocfs_doprocmaps(PFS_FILL_ARGS)
{
char mebuffer[512];
vm_map_t map = &p->p_vmspace->vm_map;
vm_map_entry_t entry;
vm_object_t obj, tobj, lobj;
vm_ooffset_t off = 0;
char *name = "", *freename = NULL;
size_t len;
ino_t ino;
int ref_count, shadow_count, flags;
int error;
struct vnode *vp;
struct vattr vat;
PROC_LOCK(p);
error = p_candebug(td, p);
PROC_UNLOCK(p);
if (error)
return (error);
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
if (uio->uio_offset != 0)
return (0);
error = 0;
if (map != &curthread->td_proc->p_vmspace->vm_map)
vm_map_lock_read(map);
for (entry = map->header.next;
((uio->uio_resid > 0) && (entry != &map->header));
entry = entry->next) {
name = "";
freename = NULL;
if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
continue;
obj = entry->object.vm_object;
for (lobj = tobj = obj; tobj; tobj = tobj->backing_object)
lobj = tobj;
ino = 0;
if (lobj) {
vp = lobj->handle;
VM_OBJECT_LOCK(lobj);
off = IDX_TO_OFF(lobj->size);
if (lobj->type == OBJT_VNODE && lobj->handle) {
vn_fullpath(td, vp, &name, &freename);
VOP_GETATTR(vp, &vat, td->td_ucred, td);
ino = vat.va_fileid;
}
flags = obj->flags;
ref_count = obj->ref_count;
shadow_count = obj->shadow_count;
VM_OBJECT_UNLOCK(lobj);
} else {
flags = 0;
ref_count = 0;
shadow_count = 0;
}
/*
* format:
* start, end, access, offset, major, minor, inode, name.
*/
snprintf(mebuffer, sizeof mebuffer,
"%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n",
(u_long)entry->start, (u_long)entry->end,
(entry->protection & VM_PROT_READ)?"r":"-",
(entry->protection & VM_PROT_WRITE)?"w":"-",
(entry->protection & VM_PROT_EXECUTE)?"x":"-",
"p",
(u_long)off,
0,
0,
(u_long)ino,
*name ? " " : "",
name
);
if (freename)
free(freename, M_TEMP);
len = strlen(mebuffer);
if (len > uio->uio_resid)
len = uio->uio_resid; /*
* XXX We should probably return
* EFBIG here, as in procfs.
*/
error = uiomove(mebuffer, len, uio);
if (error)
break;
}
if (map != &curthread->td_proc->p_vmspace->vm_map)
vm_map_unlock_read(map);
return (error);
}
/*
* Filler function for proc/net/dev
*/
static int
linprocfs_donetdev(PFS_FILL_ARGS)
{
char ifname[16]; /* XXX LINUX_IFNAMSIZ */
struct ifnet *ifp;
sbuf_printf(sb, "%6s|%58s|%s\n%6s|%58s|%58s\n",
"Inter-", " Receive", " Transmit", " face",
"bytes packets errs drop fifo frame compressed",
"bytes packets errs drop fifo frame compressed");
IFNET_RLOCK();
TAILQ_FOREACH(ifp, &ifnet, if_link) {
linux_ifname(ifp, ifname, sizeof ifname);
sbuf_printf(sb, "%6.6s:", ifname);
sbuf_printf(sb, "%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu ",
0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL);
sbuf_printf(sb, "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL);
}
IFNET_RUNLOCK();
return (0);
}
/*
* Filler function for proc/scsi/device_info
*/
static int
linprocfs_doscsidevinfo(PFS_FILL_ARGS)
{
return (0);
}
/*
* Filler function for proc/scsi/scsi
*/
static int
linprocfs_doscsiscsi(PFS_FILL_ARGS)
{
return (0);
}
extern struct cdevsw *cdevsw[];
/*
* Filler function for proc/devices
*/
static int
linprocfs_dodevices(PFS_FILL_ARGS)
{
char *char_devices;
sbuf_printf(sb, "Character devices:\n");
char_devices = linux_get_char_devices();
sbuf_printf(sb, "%s", char_devices);
linux_free_get_char_devices(char_devices);
sbuf_printf(sb, "\nBlock devices:\n");
return (0);
}
/*
* Filler function for proc/cmdline
*/
static int
linprocfs_docmdline(PFS_FILL_ARGS)
{
sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname);
sbuf_printf(sb, " ro root=302\n");
return (0);
}
#if 0
/*
* Filler function for proc/modules
*/
static int
linprocfs_domodules(PFS_FILL_ARGS)
{
struct linker_file *lf;
TAILQ_FOREACH(lf, &linker_files, link) {
sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename,
(unsigned long)lf->size, lf->refs);
}
return (0);
}
#endif
/*
* Constructor
*/
static int
linprocfs_init(PFS_INIT_ARGS)
{
struct pfs_node *root;
struct pfs_node *dir;
root = pi->pi_root;
/* /proc/... */
pfs_create_file(root, "cmdline", &linprocfs_docmdline,
NULL, NULL, PFS_RD);
pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo,
NULL, NULL, PFS_RD);
pfs_create_file(root, "devices", &linprocfs_dodevices,
NULL, NULL, PFS_RD);
pfs_create_file(root, "loadavg", &linprocfs_doloadavg,
NULL, NULL, PFS_RD);
pfs_create_file(root, "meminfo", &linprocfs_domeminfo,
NULL, NULL, PFS_RD);
#if 0
pfs_create_file(root, "modules", &linprocfs_domodules,
NULL, NULL, PFS_RD);
#endif
pfs_create_file(root, "mounts", &linprocfs_domtab,
NULL, NULL, PFS_RD);
pfs_create_file(root, "mtab", &linprocfs_domtab,
NULL, NULL, PFS_RD);
pfs_create_link(root, "self", &procfs_docurproc,
NULL, NULL, 0);
pfs_create_file(root, "stat", &linprocfs_dostat,
NULL, NULL, PFS_RD);
pfs_create_file(root, "uptime", &linprocfs_douptime,
NULL, NULL, PFS_RD);
pfs_create_file(root, "version", &linprocfs_doversion,
NULL, NULL, PFS_RD);
/* /proc/net/... */
dir = pfs_create_dir(root, "net", NULL, NULL, 0);
pfs_create_file(dir, "dev", &linprocfs_donetdev,
NULL, NULL, PFS_RD);
/* /proc/<pid>/... */
dir = pfs_create_dir(root, "pid", NULL, NULL, PFS_PROCDEP);
pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline,
NULL, NULL, PFS_RD);
pfs_create_link(dir, "cwd", &linprocfs_doproccwd,
NULL, NULL, 0);
pfs_create_file(dir, "environ", &linprocfs_doprocenviron,
NULL, NULL, PFS_RD);
pfs_create_link(dir, "exe", &procfs_doprocfile,
NULL, &procfs_notsystem, 0);
pfs_create_file(dir, "maps", &linprocfs_doprocmaps,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "mem", &procfs_doprocmem,
&procfs_attr, &procfs_candebug, PFS_RDWR|PFS_RAW);
pfs_create_link(dir, "root", &linprocfs_doprocroot,
NULL, NULL, 0);
pfs_create_file(dir, "stat", &linprocfs_doprocstat,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "statm", &linprocfs_doprocstatm,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "status", &linprocfs_doprocstatus,
NULL, NULL, PFS_RD);
/* /proc/scsi/... */
dir = pfs_create_dir(root, "scsi", NULL, NULL, 0);
pfs_create_file(dir, "device_info", &linprocfs_doscsidevinfo,
NULL, NULL, PFS_RD);
pfs_create_file(dir, "scsi", &linprocfs_doscsiscsi,
NULL, NULL, PFS_RD);
return (0);
}
/*
* Destructor
*/
static int
linprocfs_uninit(PFS_INIT_ARGS)
{
/* nothing to do, pseudofs will GC */
return (0);
}
PSEUDOFS(linprocfs, 1);
MODULE_DEPEND(linprocfs, linux, 1, 1, 1);
MODULE_DEPEND(linprocfs, procfs, 1, 1, 1);
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