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freebsd-skq/sys/compat/linprocfs/linprocfs.c
ed 3c620db1c4 Make /proc/self/fd `work'. 
On Linux, /proc/<pid>/fd is comparable to fdescfs, where it allows you
to inspect the file descriptors used by each process. Glibc's ttyname()
works by performing a readlink() on these nodes, since all nodes in this
directory are symlinks.

It is a bit hard to implement this in linprocfs right now, so I am not
going to bother. Add a way to make ttyname(3) work, by adding a
/proc/<pid>/fd symlink, which points to /dev/fd only if the calling
process matches. When fdescfs is mounted, this will cause the
readlink() in ttyname() to fail, causing it to fall back on manually
finding a matching node in /dev.

Discussed on:	emulation@
2010-03-07 10:43:45 +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 "opt_compat.h"
#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/fcntl.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/msg.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sbuf.h>
#include <sys/sem.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 <sys/bus.h>
#include <net/if.h>
#include <net/vnet.h>
#include <vm/vm.h>
#include <vm/vm_extern.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>
#include <geom/geom.h>
#include <geom/geom_int.h>
#if defined(__i386__) || defined(__amd64__)
#include <machine/cputypes.h>
#include <machine/md_var.h>
#endif /* __i386__ || __amd64__ */
#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
* uninterruptible 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);
}
#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", "sse2", "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:");
#ifdef __i386__
switch (cpu_vendor_id) {
case CPU_VENDOR_AMD:
if (class < 6)
flags[16] = "fcmov";
break;
case CPU_VENDOR_CYRIX:
flags[24] = "cxmmx";
break;
}
#endif
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 | MPSAFE, UIO_SYSSPACE, linux_emul_path, td);
flep = NULL;
error = namei(&nd);
lep = linux_emul_path;
if (error == 0) {
if (vn_fullpath(td, nd.ni_vp, &dlep, &flep) == 0)
lep = dlep;
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
}
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 {
/* For Linux msdosfs is called vfat */
if (strcmp(fstype, "msdosfs") == 0)
fstype = "vfat";
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/partitions
*
*/
static int
linprocfs_dopartitions(PFS_FILL_ARGS)
{
struct g_class *cp;
struct g_geom *gp;
struct g_provider *pp;
struct nameidata nd;
const char *lep;
char *dlep, *flep;
size_t lep_len;
int error;
int major, minor;
/* resolve symlinks etc. in the emulation tree prefix */
NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_SYSSPACE, linux_emul_path, td);
flep = NULL;
error = namei(&nd);
lep = linux_emul_path;
if (error == 0) {
if (vn_fullpath(td, nd.ni_vp, &dlep, &flep) == 0)
lep = dlep;
vrele(nd.ni_vp);
VFS_UNLOCK_GIANT(NDHASGIANT(&nd));
}
lep_len = strlen(lep);
g_topology_lock();
error = 0;
sbuf_printf(sb, "major minor #blocks name rio rmerge rsect "
"ruse wio wmerge wsect wuse running use aveq\n");
LIST_FOREACH(cp, &g_classes, class) {
if (strcmp(cp->name, "DISK") == 0 ||
strcmp(cp->name, "PART") == 0)
LIST_FOREACH(gp, &cp->geom, geom) {
LIST_FOREACH(pp, &gp->provider, provider) {
if (linux_driver_get_major_minor(
pp->name, &major, &minor) != 0) {
major = 0;
minor = 0;
}
sbuf_printf(sb, "%d %d %lld %s "
"%d %d %d %d %d "
"%d %d %d %d %d %d\n",
major, minor,
(long long)pp->mediasize, pp->name,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0);
}
}
}
g_topology_unlock();
if (flep != NULL)
free(flep, M_TEMP);
return (error);
}
/*
* Filler function for proc/stat
*/
static int
linprocfs_dostat(PFS_FILL_ARGS)
{
struct pcpu *pcpu;
long cp_time[CPUSTATES];
long *cp;
int i;
read_cpu_time(cp_time);
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_maxid; ++i) {
if (CPU_ABSENT(i))
continue;
pcpu = pcpu_find(i);
cp = pcpu->pc_cp_time;
sbuf_printf(sb, "cpu%d %ld %ld %ld %ld\n", i,
T2J(cp[CP_USER]),
T2J(cp[CP_NICE]),
T2J(cp[CP_SYS] /*+ cp[CP_INTR]*/),
T2J(cp[CP_IDLE]));
}
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)
{
long cp_time[CPUSTATES];
struct timeval tv;
getmicrouptime(&tv);
read_cpu_time(cp_time);
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);
}
/*
* Get OS build date
*/
static void
linprocfs_osbuild(struct thread *td, struct sbuf *sb)
{
#if 0
char osbuild[256];
char *cp1, *cp2;
strncpy(osbuild, version, 256);
osbuild[255] = '\0';
cp1 = strstr(osbuild, "\n");
cp2 = strstr(osbuild, ":");
if (cp1 && cp2) {
*cp1 = *cp2 = '\0';
cp1 = strstr(osbuild, "#");
} else
cp1 = NULL;
if (cp1)
sbuf_printf(sb, "%s%s", cp1, cp2 + 1);
else
#endif
sbuf_cat(sb, "#4 Sun Dec 18 04:30:00 CET 1977");
}
/*
* Get OS builder
*/
static void
linprocfs_osbuilder(struct thread *td, struct sbuf *sb)
{
#if 0
char builder[256];
char *cp;
cp = strstr(version, "\n ");
if (cp) {
strncpy(builder, cp + 5, 256);
builder[255] = '\0';
cp = strstr(builder, ":");
if (cp)
*cp = '\0';
}
if (cp)
sbuf_cat(sb, builder);
else
#endif
sbuf_cat(sb, "des@freebsd.org");
}
/*
* 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 (", osname, osrelease);
linprocfs_osbuilder(td, sb);
sbuf_cat(sb, ") (gcc version " __VERSION__ ") ");
linprocfs_osbuild(td, sb);
sbuf_cat(sb, "\n");
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;
char state;
static int ratelimit = 0;
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);
if (kp.ki_stat > sizeof(linux_state)) {
state = 'R';
if (ratelimit == 0) {
printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%zd, mapping to R\n",
kp.ki_stat, sizeof(linux_state));
++ratelimit;
}
} else
state = linux_state[kp.ki_stat - 1];
PS_ADD("state", "%c", state);
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 {
PROC_SLOCK(p);
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;
}
PROC_SUNLOCK(p);
}
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)
{
struct vmspace *vm;
vm_map_t map;
vm_map_entry_t entry, tmp_entry;
vm_object_t obj, tobj, lobj;
vm_offset_t e_start, e_end;
vm_ooffset_t off = 0;
vm_prot_t e_prot;
unsigned int last_timestamp;
char *name = "", *freename = NULL;
ino_t ino;
int ref_count, shadow_count, flags;
int error;
struct vnode *vp;
struct vattr vat;
int locked;
PROC_LOCK(p);
error = p_candebug(td, p);
PROC_UNLOCK(p);
if (error)
return (error);
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
error = 0;
vm = vmspace_acquire_ref(p);
if (vm == NULL)
return (ESRCH);
map = &vm->vm_map;
vm_map_lock_read(map);
for (entry = map->header.next; entry != &map->header;
entry = entry->next) {
name = "";
freename = NULL;
if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
continue;
e_prot = entry->protection;
e_start = entry->start;
e_end = entry->end;
obj = entry->object.vm_object;
for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
VM_OBJECT_LOCK(tobj);
if (lobj != obj)
VM_OBJECT_UNLOCK(lobj);
lobj = tobj;
}
last_timestamp = map->timestamp;
vm_map_unlock_read(map);
ino = 0;
if (lobj) {
off = IDX_TO_OFF(lobj->size);
if (lobj->type == OBJT_VNODE) {
vp = lobj->handle;
if (vp)
vref(vp);
}
else
vp = NULL;
if (lobj != obj)
VM_OBJECT_UNLOCK(lobj);
flags = obj->flags;
ref_count = obj->ref_count;
shadow_count = obj->shadow_count;
VM_OBJECT_UNLOCK(obj);
if (vp) {
vn_fullpath(td, vp, &name, &freename);
locked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_SHARED | LK_RETRY);
VOP_GETATTR(vp, &vat, td->td_ucred);
ino = vat.va_fileid;
vput(vp);
VFS_UNLOCK_GIANT(locked);
}
} else {
flags = 0;
ref_count = 0;
shadow_count = 0;
}
/*
* format:
* start, end, access, offset, major, minor, inode, name.
*/
error = sbuf_printf(sb,
"%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n",
(u_long)e_start, (u_long)e_end,
(e_prot & VM_PROT_READ)?"r":"-",
(e_prot & VM_PROT_WRITE)?"w":"-",
(e_prot & VM_PROT_EXECUTE)?"x":"-",
"p",
(u_long)off,
0,
0,
(u_long)ino,
*name ? " " : "",
name
);
if (freename)
free(freename, M_TEMP);
vm_map_lock_read(map);
if (error == -1) {
error = 0;
break;
}
if (last_timestamp != map->timestamp) {
/*
* Look again for the entry because the map was
* modified while it was unlocked. Specifically,
* the entry may have been clipped, merged, or deleted.
*/
vm_map_lookup_entry(map, e_end - 1, &tmp_entry);
entry = tmp_entry;
}
}
vm_map_unlock_read(map);
vmspace_free(vm);
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");
CURVNET_SET(TD_TO_VNET(curthread));
IFNET_RLOCK();
TAILQ_FOREACH(ifp, &V_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();
CURVNET_RESTORE();
return (0);
}
/*
* Filler function for proc/sys/kernel/osrelease
*/
static int
linprocfs_doosrelease(PFS_FILL_ARGS)
{
char osrelease[LINUX_MAX_UTSNAME];
linux_get_osrelease(td, osrelease);
sbuf_printf(sb, "%s\n", osrelease);
return (0);
}
/*
* Filler function for proc/sys/kernel/ostype
*/
static int
linprocfs_doostype(PFS_FILL_ARGS)
{
char osname[LINUX_MAX_UTSNAME];
linux_get_osname(td, osname);
sbuf_printf(sb, "%s\n", osname);
return (0);
}
/*
* Filler function for proc/sys/kernel/version
*/
static int
linprocfs_doosbuild(PFS_FILL_ARGS)
{
linprocfs_osbuild(td, sb);
sbuf_cat(sb, "\n");
return (0);
}
/*
* Filler function for proc/sys/kernel/msgmni
*/
static int
linprocfs_domsgmni(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%d\n", msginfo.msgmni);
return (0);
}
/*
* Filler function for proc/sys/kernel/pid_max
*/
static int
linprocfs_dopid_max(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%i\n", PID_MAX);
return (0);
}
/*
* Filler function for proc/sys/kernel/sem
*/
static int
linprocfs_dosem(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns,
seminfo.semopm, seminfo.semmni);
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
/*
* Filler function for proc/pid/fd
*/
static int
linprocfs_dofdescfs(PFS_FILL_ARGS)
{
if (p == curproc)
sbuf_printf(sb, "/dev/fd");
else
sbuf_printf(sb, "unknown");
return (0);
}
/*
* 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, NULL, PFS_RD);
pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "devices", &linprocfs_dodevices,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "loadavg", &linprocfs_doloadavg,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "meminfo", &linprocfs_domeminfo,
NULL, NULL, NULL, PFS_RD);
#if 0
pfs_create_file(root, "modules", &linprocfs_domodules,
NULL, NULL, NULL, PFS_RD);
#endif
pfs_create_file(root, "mounts", &linprocfs_domtab,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "mtab", &linprocfs_domtab,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "partitions", &linprocfs_dopartitions,
NULL, NULL, NULL, PFS_RD);
pfs_create_link(root, "self", &procfs_docurproc,
NULL, NULL, NULL, 0);
pfs_create_file(root, "stat", &linprocfs_dostat,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "uptime", &linprocfs_douptime,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(root, "version", &linprocfs_doversion,
NULL, NULL, NULL, PFS_RD);
/* /proc/net/... */
dir = pfs_create_dir(root, "net", NULL, NULL, NULL, 0);
pfs_create_file(dir, "dev", &linprocfs_donetdev,
NULL, NULL, NULL, PFS_RD);
/* /proc/<pid>/... */
dir = pfs_create_dir(root, "pid", NULL, NULL, NULL, PFS_PROCDEP);
pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline,
NULL, NULL, NULL, PFS_RD);
pfs_create_link(dir, "cwd", &linprocfs_doproccwd,
NULL, NULL, NULL, 0);
pfs_create_file(dir, "environ", &linprocfs_doprocenviron,
NULL, NULL, NULL, PFS_RD);
pfs_create_link(dir, "exe", &procfs_doprocfile,
NULL, &procfs_notsystem, NULL, 0);
pfs_create_file(dir, "maps", &linprocfs_doprocmaps,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "mem", &procfs_doprocmem,
&procfs_attr, &procfs_candebug, NULL, PFS_RDWR|PFS_RAW);
pfs_create_link(dir, "root", &linprocfs_doprocroot,
NULL, NULL, NULL, 0);
pfs_create_file(dir, "stat", &linprocfs_doprocstat,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "statm", &linprocfs_doprocstatm,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "status", &linprocfs_doprocstatus,
NULL, NULL, NULL, PFS_RD);
pfs_create_link(dir, "fd", &linprocfs_dofdescfs,
NULL, NULL, NULL, 0);
/* /proc/scsi/... */
dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0);
pfs_create_file(dir, "device_info", &linprocfs_doscsidevinfo,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "scsi", &linprocfs_doscsiscsi,
NULL, NULL, NULL, PFS_RD);
/* /proc/sys/... */
dir = pfs_create_dir(root, "sys", NULL, NULL, NULL, 0);
/* /proc/sys/kernel/... */
dir = pfs_create_dir(dir, "kernel", NULL, NULL, NULL, 0);
pfs_create_file(dir, "osrelease", &linprocfs_doosrelease,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "ostype", &linprocfs_doostype,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "version", &linprocfs_doosbuild,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "msgmni", &linprocfs_domsgmni,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "pid_max", &linprocfs_dopid_max,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "sem", &linprocfs_dosem,
NULL, 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);
MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1);
MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1);
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