Support for unidirectional pipes, by Ed Swierk.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2267 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vl.c b/vl.c
index 7e161c6..b3e07ac 100644
--- a/vl.c
+++ b/vl.c
@@ -1297,12 +1297,23 @@
CharDriverState *qemu_chr_open_pipe(const char *filename)
{
- int fd;
+ int fd_in, fd_out;
+ char filename_in[256], filename_out[256];
- fd = open(filename, O_RDWR | O_BINARY);
- if (fd < 0)
- return NULL;
- return qemu_chr_open_fd(fd, fd);
+ snprintf(filename_in, 256, "%s.in", filename);
+ snprintf(filename_out, 256, "%s.out", filename);
+ fd_in = open(filename_in, O_RDWR | O_BINARY);
+ fd_out = open(filename_out, O_RDWR | O_BINARY);
+ if (fd_in < 0 || fd_out < 0) {
+ if (fd_in >= 0)
+ close(fd_in);
+ if (fd_out >= 0)
+ close(fd_out);
+ fd_in = fd_out = open(filename, O_RDWR | O_BINARY);
+ if (fd_in < 0)
+ return NULL;
+ }
+ return qemu_chr_open_fd(fd_in, fd_out);
}
