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authorHenryk Plötz <henryk@ploetzli.ch>2014-10-03 19:58:52 +0200
committerHenryk Plötz <henryk@ploetzli.ch>2014-10-03 19:58:52 +0200
commit0e5b2871ca6456b01d4bf037a6e68badf1ff1a41 (patch)
tree97b95b74c9618d85da9aa9451a55a819cd7b1c2e /timeoutread.c
downloadtinydnssec-0e5b2871ca6456b01d4bf037a6e68badf1ff1a41.tar.gz
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Initial commit of djbdns-1.05.tar.gz
Source was http://cr.yp.to/djbdns/djbdns-1.05.tar.gz, SHA1 2efdb3a039d0c548f40936aa9cb30829e0ce8c3d
Diffstat (limited to 'timeoutread.c')
-rw-r--r--timeoutread.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/timeoutread.c b/timeoutread.c
new file mode 100644
index 0000000..85a36e9
--- /dev/null
+++ b/timeoutread.c
@@ -0,0 +1,28 @@
+#include <unistd.h>
+#include "error.h"
+#include "iopause.h"
+#include "timeoutread.h"
+
+int timeoutread(int t,int fd,char *buf,int len)
+{
+ struct taia now;
+ struct taia deadline;
+ iopause_fd x;
+
+ taia_now(&now);
+ taia_uint(&deadline,t);
+ taia_add(&deadline,&now,&deadline);
+
+ x.fd = fd;
+ x.events = IOPAUSE_READ;
+ for (;;) {
+ taia_now(&now);
+ iopause(&x,1,&deadline,&now);
+ if (x.revents) break;
+ if (taia_less(&deadline,&now)) {
+ errno = error_timeout;
+ return -1;
+ }
+ }
+ return read(fd,buf,len);
+}