# All lines beginning with `# DP:' are a description of the patch. # DP: Description: allow dynamic long-running processes to # DP: re-read a dynamically updated resolv.conf on the fly # DP: Dpatch author: Adam Conrad # DP: Patch author: Thorsten Kukuk # DP: Upstream status: Ubuntu-Specific # DP: Date: 2006-01-13 08:14:21 UTC Index: resolv/res_libc.c =================================================================== --- resolv/res_libc.c.orig +++ resolv/res_libc.c @@ -22,7 +22,7 @@ #include #include #include - +#include /* The following bit is copied from res_data.c (where it is #ifdef'ed out) since res_init() should go into libc.so but the rest of that @@ -94,8 +94,17 @@ int __res_maybe_init (res_state resp, int preinit) { - if (resp->options & RES_INIT) { - if (__res_initstamp != resp->_u._ext.initstamp) { + static time_t last_mtime; + struct stat statbuf; + int ret; + + + if (resp->options & RES_INIT) { + ret = stat (_PATH_RESCONF, &statbuf); + if (__res_initstamp != resp->_u._ext.initstamp + || (ret == 0) && (last_mtime != statbuf.st_mtime)) + { + last_mtime = statbuf.st_mtime; if (resp->nscount > 0) { __res_iclose (resp, true); return __res_vinit (resp, 1);