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/*
* lsvfs - list loaded VFSes
* Garrett A. Wollman, September 1994
* This file is in the public domain.
*
*/
#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 0x%08x %5d %s\n"
#define HDRFMT "%-32.32s %10s %5.5s %s\n"
#define DASHES "-------------------------------- " \
"---------- ----- ---------------\n"
static struct flaglist {
int flag;
const char str[32]; /* must be longer than the longest one. */
} fl[] = {
{ .flag = VFCF_STATIC, .str = "static", },
{ .flag = VFCF_NETWORK, .str = "network", },
{ .flag = VFCF_READONLY, .str = "read-only", },
{ .flag = VFCF_SYNTHETIC, .str = "synthetic", },
{ .flag = VFCF_LOOPBACK, .str = "loopback", },
{ .flag = VFCF_UNICODE, .str = "unicode", },
{ .flag = VFCF_JAIL, .str = "jail", },
{ .flag = VFCF_DELEGADMIN, .str = "delegated-administration", },
};
static const char *fmt_flags(int);
int
main(int argc, char **argv)
{
struct xvfsconf vfc, *xvfsp;
size_t buflen;
int cnt, i, rv = 0;
argc--, argv++;
printf(HDRFMT, "Filesystem", "Num", "Refs", "Flags");
fputs(DASHES, stdout);
if (argc > 0) {
for (; argc > 0; argc--, argv++) {
if (getvfsbyname(*argv, &vfc) == 0) {
printf(FMT, vfc.vfc_name, vfc.vfc_typenum,
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_typenum,
xvfsp[i].vfc_refcount,
fmt_flags(xvfsp[i].vfc_flags));
}
free(xvfsp);
}
return (rv);
}
static const char *
fmt_flags(int flags)
{
static char buf[sizeof(struct flaglist) * sizeof(fl)];
int i;
buf[0] = '\0';
for (i = 0; i < (int)nitems(fl); i++) {
if ((flags & fl[i].flag) != 0) {
strlcat(buf, fl[i].str, sizeof(buf));
strlcat(buf, ", ", sizeof(buf));
}
}
/* Zap the trailing comma + space. */
if (buf[0] != '\0')
buf[strlen(buf) - 2] = '\0';
return (buf);
}
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