1 /* 2 * lsvfs - list loaded VFSes 3 * Garrett A. Wollman, September 1994 4 * This file is in the public domain. 5 * 6 * $FreeBSD: src/usr.bin/lsvfs/lsvfs.c,v 1.13.2.1 2001/07/30 09:59:16 dd Exp $ 7 */ 8 9 #define _NEW_VFSCONF 10 11 #include <sys/param.h> 12 #include <sys/mount.h> 13 14 #include <err.h> 15 #include <stdio.h> 16 #include <string.h> 17 18 #define FMT "%-32.32s 0x%08x %5d %s\n" 19 #define HDRFMT "%-32.32s %10s %5.5s %s\n" 20 #define DASHES "-------------------------------- " \ 21 "---------- ----- ---------------\n" 22 23 static struct flaglist { 24 int flag; 25 const char str[32]; /* must be longer than the longest one. */ 26 } fl[] = { 27 { .flag = VFCF_STATIC, .str = "static", }, 28 { .flag = VFCF_NETWORK, .str = "network", }, 29 { .flag = VFCF_READONLY, .str = "read-only", }, 30 { .flag = VFCF_SYNTHETIC, .str = "synthetic", }, 31 { .flag = VFCF_LOOPBACK, .str = "loopback", }, 32 { .flag = VFCF_UNICODE, .str = "unicode", }, 33 }; 34 35 static const char *fmt_flags(int); 36 37 int 38 main(int argc, char **argv) 39 { 40 int rv = 0; 41 struct vfsconf vfc; 42 struct ovfsconf *ovfcp; 43 argc--, argv++; 44 45 setvfsent(1); 46 47 printf(HDRFMT, "Filesystem", "Num", "Refs", "Flags"); 48 fputs(DASHES, stdout); 49 50 if(argc) { 51 for(; argc; argc--, argv++) { 52 if (getvfsbyname(*argv, &vfc) == 0) { 53 printf(FMT, vfc.vfc_name, vfc.vfc_typenum, 54 vfc.vfc_refcount, 55 fmt_flags(vfc.vfc_flags)); 56 } else { 57 warnx("VFS %s unknown or not loaded", *argv); 58 rv = 1; 59 } 60 } 61 } else { 62 while ((ovfcp = getvfsent()) != NULL) { 63 if (getvfsbyname(ovfcp->vfc_name, &vfc) == 0) { 64 printf(FMT, vfc.vfc_name, vfc.vfc_typenum, 65 vfc.vfc_refcount, 66 fmt_flags(vfc.vfc_flags)); 67 } else { 68 warnx("VFS %s unknown or not loaded", *argv); 69 rv = 1; 70 } 71 } 72 } 73 74 endvfsent(); 75 return rv; 76 } 77 78 static const char * 79 fmt_flags(int flags) 80 { 81 static char buf[sizeof(struct flaglist) * sizeof(fl)]; 82 int i; 83 84 buf[0] = '\0'; 85 for (i = 0; i < (int)nitems(fl); i++) 86 if (flags & fl[i].flag) { 87 strlcat(buf, fl[i].str, sizeof(buf)); 88 strlcat(buf, ", ", sizeof(buf)); 89 } 90 if (buf[0] != '\0') 91 buf[strlen(buf) - 2] = '\0'; 92 return (buf); 93 } 94