diff options
Diffstat (limited to 'parsenfsfh.c')
| -rw-r--r-- | parsenfsfh.c | 53 |
1 files changed, 20 insertions, 33 deletions
diff --git a/parsenfsfh.c b/parsenfsfh.c index cd94369..15e9bcd 100644 --- a/parsenfsfh.c +++ b/parsenfsfh.c @@ -40,14 +40,13 @@ * Western Research Laboratory */ -#ifdef HAVE_CONFIG_H #include <config.h> -#endif #include "netdissect-stdinc.h" #include <stdio.h> #include <string.h> +#include <limits.h> #include "netdissect-ctype.h" @@ -138,8 +137,7 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, /* bytes[2,3] == (0,0); must be Auspex */ /* XXX or could be Ultrix+MASSBUS "hp" disk? */ fhtype = FHT_AUSPEX; - } - else { + } else { /* * bytes[2,3] != (0,0); rules out Auspex, could be * DECOSF, SUNOS4, or IRIX4 @@ -148,23 +146,20 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, (GET_U_1(fhp + 8) == 12) && (GET_U_1(fhp + 9) == 0)) { /* seems to be DECOSF, with minor == 0 */ fhtype = FHT_DECOSF; - } - else { + } else { /* could be SUNOS4 or IRIX4 */ /* XXX the test of fhp[5] == 8 could be wrong */ if ((GET_U_1(fhp + 4) == 0) && (GET_U_1(fhp + 5) == 8) && (GET_U_1(fhp + 6) == 0) && (GET_U_1(fhp + 7) == 0)) { /* looks like a length, not a file system typecode */ fhtype = FHT_IRIX4; - } - else { + } else { /* by elimination */ fhtype = FHT_SUNOS4; } } } - } - else { + } else { /* * bytes[0,1] != (0,0); rules out Auspex, IRIX4, SUNOS4 * could be IRIX5, DECOSF, UCX, Ultrix, SUNOS5 @@ -183,35 +178,30 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, /*XXX we probably only need to test of these two bytes */ else if ((len >= 24/4) && (GET_U_1(fhp + 21) == 0) && (GET_U_1(fhp + 23) == 0)) { fhtype = FHT_ULTRIX; - } - else { + } else { /* Could be SUNOS5/IRIX5, maybe AIX */ /* XXX no obvious difference between SUNOS5 and IRIX5 */ if (GET_U_1(fhp + 9) == 10) fhtype = FHT_SUNOS5; /* XXX what about AIX? */ } - } - else { + } else { /* * bytes[2,3] != (0,0); rules out Ultrix, could be * DECOSF, SUNOS5, IRIX5, AIX, HP-UX, or UCX */ if ((GET_U_1(fhp + 8) == 12) && (GET_U_1(fhp + 9) == 0)) { fhtype = FHT_DECOSF; - } - else if ((GET_U_1(fhp + 8) == 0) && (GET_U_1(fhp + 9) == 10)) { + } else if ((GET_U_1(fhp + 8) == 0) && (GET_U_1(fhp + 9) == 10)) { /* could be SUNOS5/IRIX5, AIX, HP-UX */ if ((GET_U_1(fhp + 7) == 0) && (GET_U_1(fhp + 6) == 0) && (GET_U_1(fhp + 5) == 0) && (GET_U_1(fhp + 4) == 0)) { /* XXX is this always true of HP-UX? */ fhtype = FHT_HPUX9; - } - else if (GET_U_1(fhp + 7) == 2) { + } else if (GET_U_1(fhp + 7) == 2) { /* This would be MNT_NFS on AIX, which is impossible */ fhtype = FHT_SUNOS5; /* or maybe IRIX5 */ - } - else { + } else { /* * XXX Could be SUNOS5/IRIX5 or AIX. I don't * XXX see any way to disambiguate these, so @@ -220,12 +210,10 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, */ fhtype = FHT_SUNOS5; /* or maybe IRIX5 */ } - } - else { + } else { if (is_UCX(ndo, fhp, len)) { fhtype = FHT_VMSUCX; - } - else { + } else { fhtype = FHT_UNKNOWN; } } @@ -346,8 +334,7 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, memset((char *)fsidp, 0, sizeof(*fsidp)); /* just use the whole thing */ memcpy((char *)fsidp, (const char *)fh, 14); - } - else { + } else { uint32_t tempa[4]; /* at least 16 bytes, maybe more */ memset((char *)tempa, 0, sizeof(tempa)); @@ -401,6 +388,7 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, (void)fprintf(stderr, "\n"); #endif /* Save the actual handle, so it can be display with -u */ + /* XXX really ? When -u is used this function is not called */ for (i = 0; i < len*4 && i*2 < sizeof(fsidp->Opaque_Handle) - 1; i++) (void)snprintf(&(fsidp->Opaque_Handle[i*2]), 3, "%.2X", GET_U_1(fhp + i)); @@ -408,11 +396,12 @@ Parse_fh(netdissect_options *ndo, const unsigned char *fh, u_int len, /* XXX for now, give "bogus" values to aid debugging */ fsidp->fsid_code = 0; - fsidp->Fsid_dev.Minor = 257; - fsidp->Fsid_dev.Major = 257; + fsidp->Fsid_dev.Minor = UINT_MAX; + fsidp->Fsid_dev.Major = UINT_MAX; *inop = 1; - /* display will show this string instead of (257,257) */ + /* display will show this string instead of (UINT_MAX,UINT_MAX) */ + /* XXX really ? */ if (fsnamep) *fsnamep = "Unknown"; @@ -449,12 +438,10 @@ is_UCX(netdissect_options *ndo, const unsigned char *fhp, u_int len) return(0); else continue; - } - else if (GET_U_1(fhp + i) == 0) { + } else if (GET_U_1(fhp + i) == 0) { seen_null = 1; continue; - } - else + } else return(0); } |