diff options
Diffstat (limited to 'packet-snmp.c')
| -rw-r--r-- | packet-snmp.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/packet-snmp.c b/packet-snmp.c index 8cf23aebe8..d908fe6f7b 100644 --- a/packet-snmp.c +++ b/packet-snmp.c @@ -2,7 +2,7 @@ * Routines for SNMP (simple network management protocol) * D.Jorand (c) 1998 * - * $Id: packet-snmp.c,v 1.47 2000/08/13 14:09:00 deniel Exp $ + * $Id: packet-snmp.c,v 1.48 2000/09/08 07:14:01 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs <gerald@zing.org> @@ -1971,10 +1971,15 @@ proto_register_snmp(void) when run on older versions, routines not present on those older versions. - I.e., we load "libsnmp.so" with "dlopen()", and call + I.e., we load "libsnmp.so.0" with "dlopen()", and call "dlsym()" to try to find "snmp_set_suffix_only()"; if we don't find it, we make the appropriate call to - "ds_set_int()" instead. + "ds_set_int()" instead. (We load "libsnmp.so.0" rather + than "libsnmp.so" because, at least on RH 6.2, "libsnmp.so" + exists only if you've loaded the libsnmp development package, + which makes "libsnmp.so" a symlink to "libsnmp.so.0"; we + don't want to force users to install it or to make said + symlink by hand.) We do this only on Linux, for now, as we've only seen the problem on Red Hat; it may show up on other OSes that bundle @@ -1989,12 +1994,26 @@ proto_register_snmp(void) *if* they're thin enough; however, as this code is currently used only on Linux, we don't worry about that for now.) */ - libsnmp_handle = dlopen("libsnmp.so", RTLD_LAZY|RTLD_GLOBAL); + libsnmp_handle = dlopen("libsnmp.so.0", RTLD_LAZY|RTLD_GLOBAL); if (libsnmp_handle == NULL) { - /* We didn't find "libsnmp.so"; we may be linked - statically, in which case whatever call the following - line of code makes will presumably work, as - we have the routine it calls wired into our binary. */ + /* We didn't find "libsnmp.so.0". + + This could mean that there is no SNMP shared library + on this system, in which case we were linked statically, + in which case whatever call the following line of code + makes will presumably work, as we have the routine it + calls wired into our binary. (If we were linked + dynamically with "-lsnmp", we would have failed to + start.) + + It could also mean that there is an SNMP shared library + on this system, but it's called something other than + "libsnmp.so.0"; so far, we've seen the problem we're + working around only on systems where the SNMP shared + library is called "libsnmp.so.0", so we assume for now + that systems with shared SNMP libraries named something + other than "libsnmp.so.0" have an SNMP library that's + not 4.1.1. */ snmp_set_suffix_only(2); } else { /* OK, we have it loaded. Do we have |