diff options
Diffstat (limited to 'resolv/res_libc.c')
| -rw-r--r-- | resolv/res_libc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/resolv/res_libc.c b/resolv/res_libc.c index a4b376f15b..848f773958 100644 --- a/resolv/res_libc.c +++ b/resolv/res_libc.c @@ -25,6 +25,7 @@ #include <arpa/nameser.h> #include <resolv.h> #include <libc-lock.h> +#include <sys/stat.h> extern unsigned long long int __res_initstamp attribute_hidden; /* We have atomic increment operations on 64-bit platforms. */ @@ -93,6 +94,20 @@ int __res_maybe_init (res_state resp, int preinit) { if (resp->options & RES_INIT) { + static time_t last_mtime, last_check; + time_t now; + struct stat statbuf; + + time (&now); + if (now != last_check) { + last_check = now; + if (stat (_PATH_RESCONF, &statbuf) == 0 && last_mtime != statbuf.st_mtime) { + last_mtime = statbuf.st_mtime; + atomicinclock (lock); + atomicinc (__res_initstamp); + atomicincunlock (lock); + } + } if (__res_initstamp != resp->_u._ext.initstamp) { if (resp->nscount > 0) __res_iclose (resp, true); |