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freebsd-dev/sys/compat/linprocfs/linprocfs.c
Edward Tomasz Napierala 978ffef22f Add missing SysV IPC stats to linprocfs(4). Fixes 'ipcs -l', 
and also helps Oracle.

MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25669
2020-07-18 10:56:04 +00:00

1958 lines
49 KiB
C
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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* 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/fcntl.h>
#include <sys/filedesc.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/linker.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/msg.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/ptrace.h>
#include <sys/resourcevar.h>
#include <sys/resource.h>
#include <sys/sbuf.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/smp.h>
#include <sys/socket.h>
#include <sys/syscallsubr.h>
#include <sys/sysctl.h>
#include <sys/sysent.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/tty.h>
#include <sys/user.h>
#include <sys/uuid.h>
#include <sys/vmmeter.h>
#include <sys/vnode.h>
#include <sys/bus.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_types.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__ */
#include <compat/linux/linux.h>
#include <compat/linux/linux_mib.h>
#include <compat/linux/linux_misc.h>
#include <compat/linux/linux_util.h>
#include <fs/pseudofs/pseudofs.h>
#include <fs/procfs/procfs.h>
/*
* Various conversion macros
*/
#define T2J(x) ((long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to jiffies */
#define T2CS(x) ((unsigned long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to centiseconds */
#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 */
#define TV2J(x) ((x)->tv_sec * 100UL + (x)->tv_usec / 10000)
/**
* @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 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 */
int i, j;
memtotal = physmem * PAGE_SIZE;
/*
* The correct thing here would be:
*
memfree = vm_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 = vm_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;
/*
* 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 = vm_inactive_count() * PAGE_SIZE;
sbuf_printf(sb,
"MemTotal: %9lu kB\n"
"MemFree: %9lu kB\n"
"Buffers: %9lu kB\n"
"Cached: %9lu kB\n"
"SwapTotal:%9llu kB\n"
"SwapFree: %9llu kB\n",
B2K(memtotal), B2K(memfree), 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];
uint64_t freq;
size_t size;
u_int cache_size[4];
int fqmhz, fqkhz;
int i, j;
/*
* We default the flags to include all non-conflicting flags,
* and the Intel versions of conflicting flags.
*/
static char *cpu_feature_names[] = {
/* 0 */ "fpu", "vme", "de", "pse",
/* 4 */ "tsc", "msr", "pae", "mce",
/* 8 */ "cx8", "apic", "", "sep",
/* 12 */ "mtrr", "pge", "mca", "cmov",
/* 16 */ "pat", "pse36", "pn", "clflush",
/* 20 */ "", "dts", "acpi", "mmx",
/* 24 */ "fxsr", "sse", "sse2", "ss",
/* 28 */ "ht", "tm", "ia64", "pbe"
};
static char *amd_feature_names[] = {
/* 0 */ "", "", "", "",
/* 4 */ "", "", "", "",
/* 8 */ "", "", "", "syscall",
/* 12 */ "", "", "", "",
/* 16 */ "", "", "", "mp",
/* 20 */ "nx", "", "mmxext", "",
/* 24 */ "", "fxsr_opt", "pdpe1gb", "rdtscp",
/* 28 */ "", "lm", "3dnowext", "3dnow"
};
static char *cpu_feature2_names[] = {
/* 0 */ "pni", "pclmulqdq", "dtes64", "monitor",
/* 4 */ "ds_cpl", "vmx", "smx", "est",
/* 8 */ "tm2", "ssse3", "cid", "sdbg",
/* 12 */ "fma", "cx16", "xtpr", "pdcm",
/* 16 */ "", "pcid", "dca", "sse4_1",
/* 20 */ "sse4_2", "x2apic", "movbe", "popcnt",
/* 24 */ "tsc_deadline_timer", "aes", "xsave", "",
/* 28 */ "avx", "f16c", "rdrand", "hypervisor"
};
static char *amd_feature2_names[] = {
/* 0 */ "lahf_lm", "cmp_legacy", "svm", "extapic",
/* 4 */ "cr8_legacy", "abm", "sse4a", "misalignsse",
/* 8 */ "3dnowprefetch", "osvw", "ibs", "xop",
/* 12 */ "skinit", "wdt", "", "lwp",
/* 16 */ "fma4", "tce", "", "nodeid_msr",
/* 20 */ "", "tbm", "topoext", "perfctr_core",
/* 24 */ "perfctr_nb", "", "bpext", "ptsc",
/* 28 */ "perfctr_llc", "mwaitx", "", ""
};
static char *cpu_stdext_feature_names[] = {
/* 0 */ "fsgsbase", "tsc_adjust", "", "bmi1",
/* 4 */ "hle", "avx2", "", "smep",
/* 8 */ "bmi2", "erms", "invpcid", "rtm",
/* 12 */ "cqm", "", "mpx", "rdt_a",
/* 16 */ "avx512f", "avx512dq", "rdseed", "adx",
/* 20 */ "smap", "avx512ifma", "", "clflushopt",
/* 24 */ "clwb", "intel_pt", "avx512pf", "avx512er",
/* 28 */ "avx512cd", "sha_ni", "avx512bw", "avx512vl"
};
static char *power_flags[] = {
"ts", "fid", "vid",
"ttp", "tm", "stc",
"100mhzsteps", "hwpstate", "",
"cpb", "eff_freq_ro", "proc_feedback",
"acc_power",
};
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");
#ifdef __i386__
switch (cpu_vendor_id) {
case CPU_VENDOR_AMD:
if (cpu_class < CPUCLASS_686)
cpu_feature_names[16] = "fcmov";
break;
case CPU_VENDOR_CYRIX:
cpu_feature_names[24] = "cxmmx";
break;
}
#endif
if (cpu_exthigh >= 0x80000006)
do_cpuid(0x80000006, cache_size);
else
memset(cache_size, 0, sizeof(cache_size));
for (i = 0; i < mp_ncpus; ++i) {
fqmhz = 0;
fqkhz = 0;
freq = atomic_load_acq_64(&tsc_freq);
if (freq != 0) {
fqmhz = (freq + 4999) / 1000000;
fqkhz = ((freq + 4999) / 10000) % 100;
}
sbuf_printf(sb,
"processor\t: %d\n"
"vendor_id\t: %.20s\n"
"cpu family\t: %u\n"
"model\t\t: %u\n"
"model name\t: %s\n"
"stepping\t: %u\n"
"cpu MHz\t\t: %d.%02d\n"
"cache size\t: %d KB\n"
"physical id\t: %d\n"
"siblings\t: %d\n"
"core id\t\t: %d\n"
"cpu cores\t: %d\n"
"apicid\t\t: %d\n"
"initial apicid\t: %d\n"
"fpu\t\t: %s\n"
"fpu_exception\t: %s\n"
"cpuid level\t: %d\n"
"wp\t\t: %s\n",
i, cpu_vendor, CPUID_TO_FAMILY(cpu_id),
CPUID_TO_MODEL(cpu_id), model, cpu_id & CPUID_STEPPING,
fqmhz, fqkhz,
(cache_size[2] >> 16), 0, mp_ncpus, i, mp_ncpus,
i, i, /*cpu_id & CPUID_LOCAL_APIC_ID ??*/
(cpu_feature & CPUID_FPU) ? "yes" : "no", "yes",
CPUID_TO_FAMILY(cpu_id), "yes");
sbuf_cat(sb, "flags\t\t:");
for (j = 0; j < nitems(cpu_feature_names); j++)
if (cpu_feature & (1 << j) &&
cpu_feature_names[j][0] != '\0')
sbuf_printf(sb, " %s", cpu_feature_names[j]);
for (j = 0; j < nitems(amd_feature_names); j++)
if (amd_feature & (1 << j) &&
amd_feature_names[j][0] != '\0')
sbuf_printf(sb, " %s", amd_feature_names[j]);
for (j = 0; j < nitems(cpu_feature2_names); j++)
if (cpu_feature2 & (1 << j) &&
cpu_feature2_names[j][0] != '\0')
sbuf_printf(sb, " %s", cpu_feature2_names[j]);
for (j = 0; j < nitems(amd_feature2_names); j++)
if (amd_feature2 & (1 << j) &&
amd_feature2_names[j][0] != '\0')
sbuf_printf(sb, " %s", amd_feature2_names[j]);
for (j = 0; j < nitems(cpu_stdext_feature_names); j++)
if (cpu_stdext_feature & (1 << j) &&
cpu_stdext_feature_names[j][0] != '\0')
sbuf_printf(sb, " %s",
cpu_stdext_feature_names[j]);
sbuf_cat(sb, "\n");
sbuf_printf(sb,
"bugs\t\t: %s\n"
"bogomips\t: %d.%02d\n"
"clflush size\t: %d\n"
"cache_alignment\t: %d\n"
"address sizes\t: %d bits physical, %d bits virtual\n",
#if defined(I586_CPU) && !defined(NO_F00F_HACK)
(has_f00f_bug) ? "Intel F00F" : "",
#else
"",
#endif
fqmhz * 2, fqkhz,
cpu_clflush_line_size, cpu_clflush_line_size,
cpu_maxphyaddr,
(cpu_maxphyaddr > 32) ? 48 : 0);
sbuf_cat(sb, "power management: ");
for (j = 0; j < nitems(power_flags); j++)
if (amd_pminfo & (1 << j))
sbuf_printf(sb, " %s", power_flags[j]);
sbuf_cat(sb, "\n\n");
/* XXX per-cpu vendor / class / model / id? */
}
sbuf_cat(sb, "\n");
return (0);
}
#else
/* ARM64TODO: implement non-stubbed linprocfs_docpuinfo */
static int
linprocfs_docpuinfo(PFS_FILL_ARGS)
{
int i;
for (i = 0; i < mp_ncpus; ++i) {
sbuf_printf(sb,
"processor\t: %d\n"
"BogoMIPS\t: %d.%02d\n",
i, 0, 0);
sbuf_cat(sb, "Features\t: ");
sbuf_cat(sb, "\n");
sbuf_printf(sb,
"CPU implementer\t: \n"
"CPU architecture: \n"
"CPU variant\t: 0x%x\n"
"CPU part\t: 0x%x\n"
"CPU revision\t: %d\n",
0, 0, 0);
sbuf_cat(sb, "\n");
}
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;
const char *lep;
char *dlep, *flep, *mntto, *mntfrom, *fstype;
size_t lep_len;
int error;
struct statfs *buf, *sp;
size_t count;
/* resolve symlinks etc. in the emulation tree prefix */
NDINIT(&nd, LOOKUP, FOLLOW, 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);
}
lep_len = strlen(lep);
buf = NULL;
error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count,
UIO_SYSSPACE, MNT_WAIT);
if (error != 0) {
free(buf, M_TEMP);
free(flep, M_TEMP);
return (error);
}
for (sp = buf; count > 0; sp++, count--) {
/* determine device name */
mntfrom = sp->f_mntfromname;
/* determine mount point */
mntto = sp->f_mntonname;
if (strncmp(mntto, lep, lep_len) == 0 && mntto[lep_len] == '/')
mntto += lep_len;
/* determine fs type */
fstype = sp->f_fstypename;
if (strcmp(fstype, pn->pn_info->pi_name) == 0)
mntfrom = fstype = "proc";
else if (strcmp(fstype, "procfs") == 0)
continue;
if (strcmp(fstype, "autofs") == 0) {
/*
* FreeBSD uses eg "map -hosts", whereas Linux
* expects just "-hosts".
*/
if (strncmp(mntfrom, "map ", 4) == 0)
mntfrom += 4;
}
if (strcmp(fstype, "linsysfs") == 0) {
sbuf_printf(sb, "/sys %s sysfs %s", mntto,
sp->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,
sp->f_flags & MNT_RDONLY ? "ro" : "rw");
}
#define ADD_OPTION(opt, name) \
if (sp->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");
}
free(buf, M_TEMP);
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;
int major, minor;
g_topology_lock();
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();
return (0);
}
/*
* Filler function for proc/stat
*
* Output depends on kernel version:
*
* v2.5.40 <=
* user nice system idle
* v2.5.41
* user nice system idle iowait
* v2.6.11
* user nice system idle iowait irq softirq steal
* v2.6.24
* user nice system idle iowait irq softirq steal guest
* v2.6.33 >=
* user nice system idle iowait irq softirq steal guest guest_nice
*/
static int
linprocfs_dostat(PFS_FILL_ARGS)
{
struct pcpu *pcpu;
long cp_time[CPUSTATES];
long *cp;
struct timeval boottime;
int i;
char *zero_pad;
bool has_intr = true;
if (linux_kernver(td) >= LINUX_KERNVER(2,6,33)) {
zero_pad = " 0 0 0 0\n";
} else if (linux_kernver(td) >= LINUX_KERNVER(2,6,24)) {
zero_pad = " 0 0 0\n";
} else if (linux_kernver(td) >= LINUX_KERNVER(2,6,11)) {
zero_pad = " 0 0\n";
} else if (linux_kernver(td) >= LINUX_KERNVER(2,5,41)) {
has_intr = false;
zero_pad = " 0\n";
} else {
has_intr = false;
zero_pad = "\n";
}
read_cpu_time(cp_time);
getboottime(&boottime);
/* Parameters common to all versions */
sbuf_printf(sb, "cpu %lu %lu %lu %lu",
T2J(cp_time[CP_USER]),
T2J(cp_time[CP_NICE]),
T2J(cp_time[CP_SYS]),
T2J(cp_time[CP_IDLE]));
/* Print interrupt stats if available */
if (has_intr) {
sbuf_printf(sb, " 0 %lu", T2J(cp_time[CP_INTR]));
}
/* Pad out remaining fields depending on version */
sbuf_printf(sb, "%s", zero_pad);
CPU_FOREACH(i) {
pcpu = pcpu_find(i);
cp = pcpu->pc_cp_time;
sbuf_printf(sb, "cpu%d %lu %lu %lu %lu", i,
T2J(cp[CP_USER]),
T2J(cp[CP_NICE]),
T2J(cp[CP_SYS]),
T2J(cp[CP_IDLE]));
if (has_intr) {
sbuf_printf(sb, " 0 %lu", T2J(cp[CP_INTR]));
}
sbuf_printf(sb, "%s", zero_pad);
}
sbuf_printf(sb,
"disk 0 0 0 0\n"
"page %ju %ju\n"
"swap %ju %ju\n"
"intr %ju\n"
"ctxt %ju\n"
"btime %lld\n",
(uintmax_t)VM_CNT_FETCH(v_vnodepgsin),
(uintmax_t)VM_CNT_FETCH(v_vnodepgsout),
(uintmax_t)VM_CNT_FETCH(v_swappgsin),
(uintmax_t)VM_CNT_FETCH(v_swappgsout),
(uintmax_t)VM_CNT_FETCH(v_intr),
(uintmax_t)VM_CNT_FETCH(v_swtch),
(long long)boottime.tv_sec);
return (0);
}
static int
linprocfs_doswaps(PFS_FILL_ARGS)
{
struct xswdev xsw;
uintmax_t total, used;
int n;
char devname[SPECNAMELEN + 1];
sbuf_printf(sb, "Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n");
for (n = 0; ; n++) {
if (swap_dev_info(n, &xsw, devname, sizeof(devname)) != 0)
break;
total = (uintmax_t)xsw.xsw_nblks * PAGE_SIZE / 1024;
used = (uintmax_t)xsw.xsw_used * PAGE_SIZE / 1024;
/*
* The space and not tab after the device name is on
* purpose. Linux does so.
*/
sbuf_printf(sb, "/dev/%-34s unknown\t\t%jd\t%jd\t-1\n",
devname, total, used);
}
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.%02lu\n",
(long long)tv.tv_sec, tv.tv_usec / 10000,
T2S(cp_time[CP_IDLE] / mp_ncpus),
T2CS(cp_time[CP_IDLE] / mp_ncpus) % 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);
}
static int
linprocfs_get_tty_nr(struct proc *p)
{
struct session *sp;
const char *ttyname;
int error, major, minor, nr;
PROC_LOCK_ASSERT(p, MA_OWNED);
sx_assert(&proctree_lock, SX_LOCKED);
if ((p->p_flag & P_CONTROLT) == 0)
return (-1);
sp = p->p_pgrp->pg_session;
if (sp == NULL)
return (-1);
ttyname = devtoname(sp->s_ttyp->t_dev);
error = linux_driver_get_major_minor(ttyname, &major, &minor);
if (error != 0)
return (-1);
nr = makedev(major, minor);
return (nr);
}
/*
* Filler function for proc/pid/stat
*/
static int
linprocfs_doprocstat(PFS_FILL_ARGS)
{
struct kinfo_proc kp;
struct timeval boottime;
char state;
static int ratelimit = 0;
int tty_nr;
vm_offset_t startcode, startdata;
getboottime(&boottime);
sx_slock(&proctree_lock);
PROC_LOCK(p);
fill_kinfo_proc(p, &kp);
tty_nr = linprocfs_get_tty_nr(p);
sx_sunlock(&proctree_lock);
if (p->p_vmspace) {
startcode = (vm_offset_t)p->p_vmspace->vm_taddr;
startdata = (vm_offset_t)p->p_vmspace->vm_daddr;
} else {
startcode = 0;
startdata = 0;
}
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", tty_nr);
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", TV2J(&kp.ki_rusage.ru_utime));
PS_ADD("stime", "%ld", TV2J(&kp.ki_rusage.ru_stime));
PS_ADD("cutime", "%ld", TV2J(&kp.ki_rusage_ch.ru_utime));
PS_ADD("cstime", "%ld", TV2J(&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 */
PS_ADD("starttime", "%lu", TV2J(&kp.ki_start) - TV2J(&boottime));
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", "%ju", (uintmax_t)startcode);
PS_ADD("endcode", "%ju", (uintmax_t)startdata);
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;
sx_slock(&proctree_lock);
PROC_LOCK(p);
fill_kinfo_proc(p, &kp);
PROC_UNLOCK(p);
sx_sunlock(&proctree_lock);
/*
* 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;
l_sigset_t siglist, sigignore, sigcatch;
int i;
sx_slock(&proctree_lock);
PROC_LOCK(p);
td2 = FIRST_THREAD_IN_PROC(p); /* XXXKSE pretend only one thread */
if (P_SHOULDSTOP(p)) {
state = "T (stopped)";
} else {
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;
}
}
fill_kinfo_proc(p, &kp);
sx_sunlock(&proctree_lock);
sbuf_printf(sb, "Name:\t%s\n", p->p_comm); /* XXX escape */
sbuf_printf(sb, "State:\t%s\n", state);
/*
* Credentials
*/
sbuf_printf(sb, "Tgid:\t%d\n", p->p_pid);
sbuf_printf(sb, "Pid:\t%d\n", p->p_pid);
sbuf_printf(sb, "PPid:\t%d\n", kp.ki_ppid );
sbuf_printf(sb, "TracerPid:\t%d\n", kp.ki_tracer );
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
*/
PROC_LOCK(p);
bsd_to_linux_sigset(&p->p_siglist, &siglist);
ps = p->p_sigacts;
mtx_lock(&ps->ps_mtx);
bsd_to_linux_sigset(&ps->ps_sigignore, &sigignore);
bsd_to_linux_sigset(&ps->ps_sigcatch, &sigcatch);
mtx_unlock(&ps->ps_mtx);
PROC_UNLOCK(p);
sbuf_printf(sb, "SigPnd:\t%016jx\n", siglist.__mask);
/*
* XXX. SigBlk - target thread's signal mask, td_sigmask.
* To implement SigBlk pseudofs should support proc/tid dir entries.
*/
sbuf_printf(sb, "SigBlk:\t%016x\n", 0);
sbuf_printf(sb, "SigIgn:\t%016jx\n", sigignore.__mask);
sbuf_printf(sb, "SigCgt:\t%016jx\n", sigcatch.__mask);
/*
* 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)
{
struct pwd *pwd;
char *fullpath = "unknown";
char *freepath = NULL;
pwd = pwd_hold(td);
vn_fullpath(td, pwd->pwd_cdir, &fullpath, &freepath);
sbuf_printf(sb, "%s", fullpath);
if (freepath)
free(freepath, M_TEMP);
pwd_drop(pwd);
return (0);
}
/*
* Filler function for proc/pid/root
*/
static int
linprocfs_doprocroot(PFS_FILL_ARGS)
{
struct pwd *pwd;
struct vnode *vp;
char *fullpath = "unknown";
char *freepath = NULL;
pwd = pwd_hold(td);
vp = jailed(p->p_ucred) ? pwd->pwd_jdir : pwd->pwd_rdir;
vn_fullpath(td, vp, &fullpath, &freepath);
sbuf_printf(sb, "%s", fullpath);
if (freepath)
free(freepath, M_TEMP);
pwd_drop(pwd);
return (0);
}
/*
* Filler function for proc/pid/cmdline
*/
static int
linprocfs_doproccmdline(PFS_FILL_ARGS)
{
int ret;
PROC_LOCK(p);
if ((ret = p_cansee(td, p)) != 0) {
PROC_UNLOCK(p);
return (ret);
}
/*
* Mimic linux behavior and pass only processes with usermode
* address space as valid. Return zero silently otherwize.
*/
if (p->p_vmspace == &vmspace0) {
PROC_UNLOCK(p);
return (0);
}
if (p->p_args != NULL) {
sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length);
PROC_UNLOCK(p);
return (0);
}
if ((p->p_flag & P_SYSTEM) != 0) {
PROC_UNLOCK(p);
return (0);
}
PROC_UNLOCK(p);
ret = proc_getargv(td, p, sb);
return (ret);
}
/*
* Filler function for proc/pid/environ
*/
static int
linprocfs_doprocenviron(PFS_FILL_ARGS)
{
/*
* Mimic linux behavior and pass only processes with usermode
* address space as valid. Return zero silently otherwize.
*/
if (p->p_vmspace == &vmspace0)
return (0);
return (proc_getenvv(td, p, sb));
}
static char l32_map_str[] = "%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n";
static char l64_map_str[] = "%016lx-%016lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n";
static char vdso_str[] = " [vdso]";
static char stack_str[] = " [stack]";
/*
* 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;
vm_prot_t e_prot;
unsigned int last_timestamp;
char *name = "", *freename = NULL;
const char *l_map_str;
ino_t ino;
int ref_count, shadow_count, flags;
int error;
struct vnode *vp;
struct vattr vat;
bool private;
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);
if (SV_CURPROC_FLAG(SV_LP64))
l_map_str = l64_map_str;
else
l_map_str = l32_map_str;
map = &vm->vm_map;
vm_map_lock_read(map);
VM_MAP_ENTRY_FOREACH(entry, map) {
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;
off = entry->offset;
for (lobj = tobj = obj; tobj != NULL;
lobj = tobj, tobj = tobj->backing_object) {
VM_OBJECT_RLOCK(tobj);
off += lobj->backing_object_offset;
if (lobj != obj)
VM_OBJECT_RUNLOCK(lobj);
}
private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL ||
(obj->flags & OBJ_ANON) != 0;
last_timestamp = map->timestamp;
vm_map_unlock_read(map);
ino = 0;
if (lobj) {
vp = vm_object_vnode(lobj);
if (vp != NULL)
vref(vp);
if (lobj != obj)
VM_OBJECT_RUNLOCK(lobj);
flags = obj->flags;
ref_count = obj->ref_count;
shadow_count = obj->shadow_count;
VM_OBJECT_RUNLOCK(obj);
if (vp != NULL) {
vn_fullpath(td, vp, &name, &freename);
vn_lock(vp, LK_SHARED | LK_RETRY);
VOP_GETATTR(vp, &vat, td->td_ucred);
ino = vat.va_fileid;
vput(vp);
} else if (SV_PROC_ABI(p) == SV_ABI_LINUX) {
if (e_start == p->p_sysent->sv_shared_page_base)
name = vdso_str;
if (e_end == p->p_sysent->sv_usrstack)
name = stack_str;
}
} else {
flags = 0;
ref_count = 0;
shadow_count = 0;
}
/*
* format:
* start, end, access, offset, major, minor, inode, name.
*/
error = sbuf_printf(sb, l_map_str,
(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":"-",
private ? "p" : "s",
(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);
}
/*
* Criteria for interface name translation
*/
#define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
static int
linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen)
{
struct ifnet *ifscan;
int ethno;
IFNET_RLOCK_ASSERT();
/* Short-circuit non ethernet interfaces */
if (!IFP_IS_ETH(ifp))
return (strlcpy(buffer, ifp->if_xname, buflen));
/* Determine the (relative) unit number for ethernet interfaces */
ethno = 0;
CK_STAILQ_FOREACH(ifscan, &V_ifnet, if_link) {
if (ifscan == ifp)
return (snprintf(buffer, buflen, "eth%d", ethno));
if (IFP_IS_ETH(ifscan))
ethno++;
}
return (0);
}
/*
* 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 multicast",
"bytes packets errs drop fifo colls carrier compressed");
CURVNET_SET(TD_TO_VNET(curthread));
IFNET_RLOCK();
CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
linux_ifname(ifp, ifname, sizeof ifname);
sbuf_printf(sb, "%6.6s: ", ifname);
sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ",
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IBYTES),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IPACKETS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IERRORS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IQDROPS),
/* rx_missed_errors */
0UL, /* rx_fifo_errors */
0UL, /* rx_length_errors +
* rx_over_errors +
* rx_crc_errors +
* rx_frame_errors */
0UL, /* rx_compressed */
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IMCASTS));
/* XXX-BZ rx only? */
sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n",
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OBYTES),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OPACKETS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OERRORS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OQDROPS),
0UL, /* tx_fifo_errors */
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_COLLISIONS),
0UL, /* tx_carrier_errors +
* tx_aborted_errors +
* tx_window_errors +
* tx_heartbeat_errors*/
0UL); /* tx_compressed */
}
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/msgmax
*/
static int
linprocfs_domsgmax(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%d\n", msginfo.msgmax);
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/msgmnb
*/
static int
linprocfs_domsgmnb(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%d\n", msginfo.msgmnb);
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/sys/kernel/shmall
*/
static int
linprocfs_doshmall(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%lu\n", shminfo.shmall);
return (0);
}
/*
* Filler function for proc/sys/kernel/shmmax
*/
static int
linprocfs_doshmmax(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%lu\n", shminfo.shmmax);
return (0);
}
/*
* Filler function for proc/sys/kernel/shmmni
*/
static int
linprocfs_doshmmni(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%lu\n", shminfo.shmmni);
return (0);
}
/*
* Filler function for proc/sys/kernel/tainted
*/
static int
linprocfs_dotainted(PFS_FILL_ARGS)
{
sbuf_printf(sb, "0\n");
return (0);
}
/*
* Filler function for proc/sys/vm/min_free_kbytes
*
* This mirrors the approach in illumos to return zero for reads. Effectively,
* it says, no memory is kept in reserve for "atomic allocations". This class
* of allocation can be used at times when a thread cannot be suspended.
*/
static int
linprocfs_dominfree(PFS_FILL_ARGS)
{
sbuf_printf(sb, "%d\n", 0);
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);
}
/*
* 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);
}
/*
* Filler function for proc/filesystems
*/
static int
linprocfs_dofilesystems(PFS_FILL_ARGS)
{
struct vfsconf *vfsp;
vfsconf_slock();
TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) {
if (vfsp->vfc_flags & VFCF_SYNTHETIC)
sbuf_printf(sb, "nodev");
sbuf_printf(sb, "\t%s\n", vfsp->vfc_name);
}
vfsconf_sunlock();
return(0);
}
/*
* Filler function for proc/modules
*/
static int
linprocfs_domodules(PFS_FILL_ARGS)
{
#if 0
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);
}
#endif
return (0);
}
/*
* 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);
}
/*
* Filler function for proc/pid/limits
*/
static const struct linux_rlimit_ident {
const char *desc;
const char *unit;
unsigned int rlim_id;
} linux_rlimits_ident[] = {
{ "Max cpu time", "seconds", RLIMIT_CPU },
{ "Max file size", "bytes", RLIMIT_FSIZE },
{ "Max data size", "bytes", RLIMIT_DATA },
{ "Max stack size", "bytes", RLIMIT_STACK },
{ "Max core file size", "bytes", RLIMIT_CORE },
{ "Max resident set", "bytes", RLIMIT_RSS },
{ "Max processes", "processes", RLIMIT_NPROC },
{ "Max open files", "files", RLIMIT_NOFILE },
{ "Max locked memory", "bytes", RLIMIT_MEMLOCK },
{ "Max address space", "bytes", RLIMIT_AS },
{ "Max file locks", "locks", LINUX_RLIMIT_LOCKS },
{ "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING },
{ "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE },
{ "Max nice priority", "", LINUX_RLIMIT_NICE },
{ "Max realtime priority", "", LINUX_RLIMIT_RTPRIO },
{ "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME },
{ 0, 0, 0 }
};
static int
linprocfs_doproclimits(PFS_FILL_ARGS)
{
const struct linux_rlimit_ident *li;
struct plimit *limp;
struct rlimit rl;
ssize_t size;
int res, error;
error = 0;
PROC_LOCK(p);
limp = lim_hold(p->p_limit);
PROC_UNLOCK(p);
size = sizeof(res);
sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit",
"Hard Limit", "Units");
for (li = linux_rlimits_ident; li->desc != NULL; ++li) {
switch (li->rlim_id)
{
case LINUX_RLIMIT_LOCKS:
/* FALLTHROUGH */
case LINUX_RLIMIT_RTTIME:
rl.rlim_cur = RLIM_INFINITY;
break;
case LINUX_RLIMIT_SIGPENDING:
error = kernel_sysctlbyname(td,
"kern.sigqueue.max_pending_per_proc",
&res, &size, 0, 0, 0, 0);
if (error != 0)
goto out;
rl.rlim_cur = res;
rl.rlim_max = res;
break;
case LINUX_RLIMIT_MSGQUEUE:
error = kernel_sysctlbyname(td,
"kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0);
if (error != 0)
goto out;
rl.rlim_cur = res;
rl.rlim_max = res;
break;
case LINUX_RLIMIT_NICE:
/* FALLTHROUGH */
case LINUX_RLIMIT_RTPRIO:
rl.rlim_cur = 0;
rl.rlim_max = 0;
break;
default:
rl = limp->pl_rlimit[li->rlim_id];
break;
}
if (rl.rlim_cur == RLIM_INFINITY)
sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n",
li->desc, "unlimited", "unlimited", li->unit);
else
sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n",
li->desc, (unsigned long long)rl.rlim_cur,
(unsigned long long)rl.rlim_max, li->unit);
}
out:
lim_free(limp);
return (error);
}
/*
* The point of the following two functions is to work around
* an assertion in Chromium; see kern/240991 for details.
*/
static int
linprocfs_dotaskattr(PFS_ATTR_ARGS)
{
vap->va_nlink = 3;
return (0);
}
/*
* Filler function for proc/<pid>/task/.dummy
*/
static int
linprocfs_dotaskdummy(PFS_FILL_ARGS)
{
return (0);
}
/*
* Filler function for proc/sys/kernel/random/uuid
*/
static int
linprocfs_douuid(PFS_FILL_ARGS)
{
struct uuid uuid;
kern_uuidgen(&uuid, 1);
sbuf_printf_uuid(sb, &uuid);
sbuf_printf(sb, "\n");
return(0);
}
/*
* Filler function for proc/pid/auxv
*/
static int
linprocfs_doauxv(PFS_FILL_ARGS)
{
struct sbuf *asb;
off_t buflen, resid;
int error;
/*
* Mimic linux behavior and pass only processes with usermode
* address space as valid. Return zero silently otherwise.
*/
if (p->p_vmspace == &vmspace0)
return (0);
if (uio->uio_resid == 0)
return (0);
if (uio->uio_offset < 0 || uio->uio_resid < 0)
return (EINVAL);
asb = sbuf_new_auto();
if (asb == NULL)
return (ENOMEM);
error = proc_getauxv(td, p, asb);
if (error == 0)
error = sbuf_finish(asb);
resid = sbuf_len(asb) - uio->uio_offset;
if (resid > uio->uio_resid)
buflen = uio->uio_resid;
else
buflen = resid;
if (buflen > IOSIZE_MAX)
return (EINVAL);
if (buflen > MAXPHYS)
buflen = MAXPHYS;
if (resid <= 0)
return (0);
if (error == 0)
error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio);
sbuf_delete(asb);
return (error);
}
/*
* Constructor
*/
static int
linprocfs_init(PFS_INIT_ARGS)
{
struct pfs_node *root;
struct pfs_node *dir;
struct pfs_node *sys;
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, "filesystems", &linprocfs_dofilesystems,
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);
pfs_create_file(root, "modules", &linprocfs_domodules,
NULL, NULL, NULL, PFS_RD);
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, "swaps", &linprocfs_doswaps,
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/bus/... */
dir = pfs_create_dir(root, "bus", NULL, NULL, NULL, 0);
dir = pfs_create_dir(dir, "pci", NULL, NULL, NULL, 0);
dir = pfs_create_dir(dir, "devices", NULL, NULL, NULL, 0);
/* /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, &procfs_candebug, 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_rw, &procfs_candebug, NULL, PFS_RDWR | PFS_RAW);
pfs_create_file(dir, "mounts", &linprocfs_domtab,
NULL, NULL, NULL, PFS_RD);
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);
pfs_create_file(dir, "auxv", &linprocfs_doauxv,
NULL, &procfs_candebug, NULL, PFS_RD|PFS_RAWRD);
pfs_create_file(dir, "limits", &linprocfs_doproclimits,
NULL, NULL, NULL, PFS_RD);
/* /proc/<pid>/task/... */
dir = pfs_create_dir(dir, "task", linprocfs_dotaskattr, NULL, NULL, 0);
pfs_create_file(dir, ".dummy", &linprocfs_dotaskdummy,
NULL, NULL, NULL, PFS_RD);
/* /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/... */
sys = pfs_create_dir(root, "sys", NULL, NULL, NULL, 0);
/* /proc/sys/kernel/... */
dir = pfs_create_dir(sys, "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, "msgmax", &linprocfs_domsgmax,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "msgmni", &linprocfs_domsgmni,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "msgmnb", &linprocfs_domsgmnb,
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);
pfs_create_file(dir, "shmall", &linprocfs_doshmall,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "shmmax", &linprocfs_doshmmax,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "shmmni", &linprocfs_doshmmni,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "tainted", &linprocfs_dotainted,
NULL, NULL, NULL, PFS_RD);
/* /proc/sys/kernel/random/... */
dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0);
pfs_create_file(dir, "uuid", &linprocfs_douuid,
NULL, NULL, NULL, PFS_RD);
/* /proc/sys/vm/.... */
dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0);
pfs_create_file(dir, "min_free_kbytes", &linprocfs_dominfree,
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, VFCF_JAIL);
#if defined(__aarch64__) || defined(__amd64__)
MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1);
#else
MODULE_DEPEND(linprocfs, linux, 1, 1, 1);
#endif
MODULE_DEPEND(linprocfs, procfs, 1, 1, 1);
MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1);
MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1);
MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1);
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