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