1 /* 2 * lsvfs - list loaded VFSes 3 * Garrett A. Wollman, September 1994 4 * This file is in the public domain. 5 * 6 */ 7 8 #include <sys/cdefs.h> 9 __FBSDID("$FreeBSD$"); 10 11 #include <sys/param.h> 12 #include <sys/mount.h> 13 #include <sys/sysctl.h> 14 15 #include <err.h> 16 #include <stdio.h> 17 #include <stdlib.h> 18 #include <string.h> 19 20 #define FMT "%-32.32s 0x%08x %5d %s\n" 21 #define HDRFMT "%-32.32s %10s %5.5s %s\n" 22 #define DASHES "-------------------------------- " \ 23 "---------- ----- ---------------\n" 24 25 static struct flaglist { 26 int flag; 27 const char str[32]; /* must be longer than the longest one. */ 28 } fl[] = { 29 { .flag = VFCF_STATIC, .str = "static", }, 30 { .flag = VFCF_NETWORK, .str = "network", }, 31 { .flag = VFCF_READONLY, .str = "read-only", }, 32 { .flag = VFCF_SYNTHETIC, .str = "synthetic", }, 33 { .flag = VFCF_LOOPBACK, .str = "loopback", }, 34 { .flag = VFCF_UNICODE, .str = "unicode", }, 35 { .flag = VFCF_JAIL, .str = "jail", }, 36 { .flag = VFCF_DELEGADMIN, .str = "delegated-administration", }, 37 }; 38 39 static const char *fmt_flags(int); 40 41 int 42 main(int argc, char **argv) 43 { 44 int cnt, rv = 0, i; 45 struct xvfsconf vfc, *xvfsp; 46 size_t buflen; 47 argc--, argv++; 48 49 printf(HDRFMT, "Filesystem", "Num", "Refs", "Flags"); 50 fputs(DASHES, stdout); 51 52 if(argc) { 53 for(; argc; argc--, argv++) { 54 if (getvfsbyname(*argv, &vfc) == 0) { 55 printf(FMT, vfc.vfc_name, vfc.vfc_typenum, vfc.vfc_refcount, 56 fmt_flags(vfc.vfc_flags)); 57 } else { 58 warnx("VFS %s unknown or not loaded", *argv); 59 rv++; 60 } 61 } 62 } else { 63 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) 64 err(1, "sysctl(vfs.conflist)"); 65 xvfsp = malloc(buflen); 66 if (xvfsp == NULL) 67 errx(1, "malloc failed"); 68 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) 69 err(1, "sysctl(vfs.conflist)"); 70 cnt = buflen / sizeof(struct xvfsconf); 71 72 for (i = 0; i < cnt; i++) { 73 printf(FMT, xvfsp[i].vfc_name, xvfsp[i].vfc_typenum, 74 xvfsp[i].vfc_refcount, fmt_flags(xvfsp[i].vfc_flags)); 75 } 76 free(xvfsp); 77 } 78 79 return rv; 80 } 81 82 static const char * 83 fmt_flags(int flags) 84 { 85 static char buf[sizeof(struct flaglist) * sizeof(fl)]; 86 int i; 87 88 buf[0] = '\0'; 89 for (i = 0; i < (int)nitems(fl); i++) 90 if (flags & fl[i].flag) { 91 strlcat(buf, fl[i].str, sizeof(buf)); 92 strlcat(buf, ", ", sizeof(buf)); 93 } 94 if (buf[0] != '\0') 95 buf[strlen(buf) - 2] = '\0'; 96 return (buf); 97 } 98