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| author | Thorsten Kukuk <kukuk@suse.de> | 2013-08-16 14:54:23 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2013-08-16 14:54:23 -0400 |
| commit | e02c03979ed18465da97e11b270884d98e0c529d (patch) | |
| tree | 0ccd60ef11a2ee045c17253d6ff7c823bc8b0466 | |
| parent | dc04b5c29884c0a820bcc562373cb4499ce996d2 (diff) | |
| download | glibc-e02c03979ed18465da97e11b270884d98e0c529d.tar.gz glibc-e02c03979ed18465da97e11b270884d98e0c529d.tar.xz glibc-e02c03979ed18465da97e11b270884d98e0c529d.zip | |
reload /etc/resolv.conf when it has changed
if /etc/resolv.conf is updated, then make sure applications already running get the updated information. ripped from SuSE http://bugs.gentoo.org/177416
| -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 ee3fa2114b..f30b3a9104 100644 --- a/resolv/res_libc.c +++ b/resolv/res_libc.c @@ -22,6 +22,7 @@ #include <arpa/nameser.h> #include <resolv.h> #include <bits/libc-lock.h> +#include <sys/stat.h> /* The following bit is copied from res_data.c (where it is #ifdef'ed @@ -95,6 +96,20 @@ 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); |