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mirror of https://git.FreeBSD.org/src.git synced 2024-12-11 09:50:12 +00:00
freebsd/usr.bin/lsvfs/lsvfs.c
Pawel Jakub Dawidek 1ba4a712dd Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.
This bring huge amount of changes, I'll enumerate only user-visible changes:

- Delegated Administration

	Allows regular users to perform ZFS operations, like file system
	creation, snapshot creation, etc.

- L2ARC

	Level 2 cache for ZFS - allows to use additional disks for cache.
	Huge performance improvements mostly for random read of mostly
	static content.

- slog

	Allow to use additional disks for ZFS Intent Log to speed up
	operations like fsync(2).

- vfs.zfs.super_owner

	Allows regular users to perform privileged operations on files stored
	on ZFS file systems owned by him. Very careful with this one.

- chflags(2)

	Not all the flags are supported. This still needs work.

- ZFSBoot

	Support to boot off of ZFS pool. Not finished, AFAIK.

	Submitted by:	dfr

- Snapshot properties

- New failure modes

	Before if write requested failed, system paniced. Now one
	can select from one of three failure modes:
	- panic - panic on write error
	- wait - wait for disk to reappear
	- continue - serve read requests if possible, block write requests

- Refquota, refreservation properties

	Just quota and reservation properties, but don't count space consumed
	by children file systems, clones and snapshots.

- Sparse volumes

	ZVOLs that don't reserve space in the pool.

- External attributes

	Compatible with extattr(2).

- NFSv4-ACLs

	Not sure about the status, might not be complete yet.

	Submitted by:	trasz

- Creation-time properties

- Regression tests for zpool(8) command.

Obtained from:	OpenSolaris
2008-11-17 20:49:29 +00:00

100 lines
2.4 KiB
C

/*
* lsvfs - list loaded VFSes
* Garrett A. Wollman, September 1994
* This file is in the public domain.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/sysctl.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define FMT "%-32.32s %5d %s\n"
#define HDRFMT "%-32.32s %5.5s %s\n"
#define DASHES "-------------------------------- ----- ---------------\n"
static const char *fmt_flags(int);
int
main(int argc, char **argv)
{
int cnt, rv = 0, i;
struct xvfsconf vfc, *xvfsp;
size_t buflen;
argc--, argv++;
printf(HDRFMT, "Filesystem", "Refs", "Flags");
fputs(DASHES, stdout);
if(argc) {
for(; argc; argc--, argv++) {
if (getvfsbyname(*argv, &vfc) == 0) {
printf(FMT, vfc.vfc_name, vfc.vfc_refcount, fmt_flags(vfc.vfc_flags));
} else {
warnx("VFS %s unknown or not loaded", *argv);
rv++;
}
}
} else {
if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0)
err(1, "sysctl(vfs.conflist)");
xvfsp = malloc(buflen);
if (xvfsp == NULL)
errx(1, "malloc failed");
if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0)
err(1, "sysctl(vfs.conflist)");
cnt = buflen / sizeof(struct xvfsconf);
for (i = 0; i < cnt; i++) {
printf(FMT, xvfsp[i].vfc_name, xvfsp[i].vfc_refcount,
fmt_flags(xvfsp[i].vfc_flags));
}
free(xvfsp);
}
return rv;
}
static const char *
fmt_flags(int flags)
{
/*
* NB: if you add new flags, don't forget to add them here vvvvvv too.
*/
static char buf[sizeof
"static, network, read-only, synthetic, loopback, unicode, jail"];
size_t len;
buf[0] = '\0';
if(flags & VFCF_STATIC)
strlcat(buf, "static, ", sizeof(buf));
if(flags & VFCF_NETWORK)
strlcat(buf, "network, ", sizeof(buf));
if(flags & VFCF_READONLY)
strlcat(buf, "read-only, ", sizeof(buf));
if(flags & VFCF_SYNTHETIC)
strlcat(buf, "synthetic, ", sizeof(buf));
if(flags & VFCF_LOOPBACK)
strlcat(buf, "loopback, ", sizeof(buf));
if(flags & VFCF_UNICODE)
strlcat(buf, "unicode, ", sizeof(buf));
if(flags & VFCF_JAIL)
strlcat(buf, "jail, ", sizeof(buf));
if(flags & VFCF_DELEGADMIN)
strlcat(buf, "delegated-administration, ", sizeof(buf));
len = strlen(buf);
if (len > 2 && buf[len - 2] == ',')
buf[len - 2] = '\0';
return buf;
}