X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/71c4617611ca07d7c249faa2dfd2cfc5cb32b836..fc4e8d51ff374d442de010c2a7d3b55b57248d86:/io.c

diff --git a/io.c b/io.c
index aae64b75..a557a9b8 100644
--- a/io.c
+++ b/io.c
@@ -29,6 +29,7 @@ static int64 total_read;
 
 extern int verbose;
 extern int sparse_files;
+extern int io_timeout;
 
 int64 write_total(void)
 {
@@ -95,39 +96,71 @@ static void read_check(int f)
   }
 }
 
+static time_t last_io;
+
+
+static void check_timeout(void)
+{
+	time_t t;
+	
+	if (!io_timeout) return;
+
+	if (!last_io) {
+		last_io = time(NULL);
+		return;
+	}
+
+	t = time(NULL);
+
+	if (last_io && io_timeout && (t-last_io)>io_timeout) {
+		fprintf(FERROR,"read timeout after %d second - exiting\n", 
+			(int)(t-last_io));
+		exit_cleanup(1);
+	}
+}
 
 static int readfd(int fd,char *buffer,int N)
 {
-  int  ret;
-  int total=0;  
-
-  if (read_buffer_len < N)
-	  read_check(buffer_f_in);
- 
-  while (total < N)
-    {
-      if (read_buffer_len > 0 && buffer_f_in == fd) {
-	ret = MIN(read_buffer_len,N-total);
-	memcpy(buffer+total,read_buffer_p,ret);
-	read_buffer_p += ret;
-	read_buffer_len -= ret;
-      } else {
-	while ((ret = read(fd,buffer + total,N - total)) == -1) {
-	  fd_set fds;
-
-	  if (errno != EAGAIN && errno != EWOULDBLOCK)
-	    return -1;
-	  FD_ZERO(&fds);
-	  FD_SET(fd, &fds);
-	  select(fd+1, &fds, NULL, NULL, NULL);
+	int  ret;
+	int total=0;  
+	struct timeval tv;
+	
+	if (read_buffer_len < N)
+		read_check(buffer_f_in);
+	
+	while (total < N) {
+		if (read_buffer_len > 0 && buffer_f_in == fd) {
+			ret = MIN(read_buffer_len,N-total);
+			memcpy(buffer+total,read_buffer_p,ret);
+			read_buffer_p += ret;
+			read_buffer_len -= ret;
+			total += ret;
+			continue;
+		} 
+
+		while ((ret = read(fd,buffer + total,N-total)) == -1) {
+			fd_set fds;
+
+			if (errno != EAGAIN && errno != EWOULDBLOCK)
+				return -1;
+			FD_ZERO(&fds);
+			FD_SET(fd, &fds);
+			tv.tv_sec = io_timeout;
+			tv.tv_usec = 0;
+
+			if (select(fd+1, &fds, NULL, NULL, &tv) != 1) {
+				check_timeout();
+			}
+		}
+
+		if (ret <= 0)
+			return total;
+		total += ret;
 	}
-      }
 
-      if (ret <= 0)
+	if (io_timeout)
+		last_io = time(NULL);
 	return total;
-      total += ret;
-    }
-  return total;
 }
 
 
@@ -295,7 +328,10 @@ static int writefd(int fd,char *buf,int len)
 	      exit_cleanup(1);
       }
 
-      if (count == 0) continue;
+      if (count == 0) {
+	      check_timeout();
+	      continue;
+      }
       
       if (FD_ISSET(fd, &w_fds)) {
 	      got_select = 1;
@@ -305,6 +341,9 @@ static int writefd(int fd,char *buf,int len)
     }
   }
 
+  if (io_timeout)
+	  last_io = time(NULL);
+
   return total;
 }