lsvfs.c revision 185029
1696Ssundar/* 2696Ssundar * lsvfs - list loaded VFSes 3696Ssundar * Garrett A. Wollman, September 1994 4877Sattila * This file is in the public domain. 5696Ssundar * 6696Ssundar */ 7696Ssundar 8877Sattila#include <sys/cdefs.h> 9696Ssundar__FBSDID("$FreeBSD: head/usr.bin/lsvfs/lsvfs.c 185029 2008-11-17 20:49:29Z pjd $"); 10696Ssundar 11696Ssundar#include <sys/param.h> 12696Ssundar#include <sys/mount.h> 13696Ssundar#include <sys/sysctl.h> 14877Sattila 15696Ssundar#include <err.h> 16696Ssundar#include <stdio.h> 17696Ssundar#include <stdlib.h> 18877Sattila#include <string.h> 19696Ssundar 20696Ssundar#define FMT "%-32.32s %5d %s\n" 21696Ssundar#define HDRFMT "%-32.32s %5.5s %s\n" 22696Ssundar#define DASHES "-------------------------------- ----- ---------------\n" 23696Ssundar 24696Ssundarstatic const char *fmt_flags(int); 25696Ssundar 26696Ssundarint 27696Ssundarmain(int argc, char **argv) 28696Ssundar{ 29696Ssundar int cnt, rv = 0, i; 30696Ssundar struct xvfsconf vfc, *xvfsp; 31696Ssundar size_t buflen; 32696Ssundar argc--, argv++; 33696Ssundar 34 printf(HDRFMT, "Filesystem", "Refs", "Flags"); 35 fputs(DASHES, stdout); 36 37 if(argc) { 38 for(; argc; argc--, argv++) { 39 if (getvfsbyname(*argv, &vfc) == 0) { 40 printf(FMT, vfc.vfc_name, vfc.vfc_refcount, fmt_flags(vfc.vfc_flags)); 41 } else { 42 warnx("VFS %s unknown or not loaded", *argv); 43 rv++; 44 } 45 } 46 } else { 47 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) 48 err(1, "sysctl(vfs.conflist)"); 49 xvfsp = malloc(buflen); 50 if (xvfsp == NULL) 51 errx(1, "malloc failed"); 52 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) 53 err(1, "sysctl(vfs.conflist)"); 54 cnt = buflen / sizeof(struct xvfsconf); 55 56 for (i = 0; i < cnt; i++) { 57 printf(FMT, xvfsp[i].vfc_name, xvfsp[i].vfc_refcount, 58 fmt_flags(xvfsp[i].vfc_flags)); 59 } 60 free(xvfsp); 61 } 62 63 return rv; 64} 65 66static const char * 67fmt_flags(int flags) 68{ 69 /* 70 * NB: if you add new flags, don't forget to add them here vvvvvv too. 71 */ 72 static char buf[sizeof 73 "static, network, read-only, synthetic, loopback, unicode, jail"]; 74 size_t len; 75 76 buf[0] = '\0'; 77 78 if(flags & VFCF_STATIC) 79 strlcat(buf, "static, ", sizeof(buf)); 80 if(flags & VFCF_NETWORK) 81 strlcat(buf, "network, ", sizeof(buf)); 82 if(flags & VFCF_READONLY) 83 strlcat(buf, "read-only, ", sizeof(buf)); 84 if(flags & VFCF_SYNTHETIC) 85 strlcat(buf, "synthetic, ", sizeof(buf)); 86 if(flags & VFCF_LOOPBACK) 87 strlcat(buf, "loopback, ", sizeof(buf)); 88 if(flags & VFCF_UNICODE) 89 strlcat(buf, "unicode, ", sizeof(buf)); 90 if(flags & VFCF_JAIL) 91 strlcat(buf, "jail, ", sizeof(buf)); 92 if(flags & VFCF_DELEGADMIN) 93 strlcat(buf, "delegated-administration, ", sizeof(buf)); 94 len = strlen(buf); 95 if (len > 2 && buf[len - 2] == ',') 96 buf[len - 2] = '\0'; 97 98 return buf; 99} 100