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