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author | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2006-12-22 19:25:31 +0000 |
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committer | ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162> | 2006-12-22 19:25:31 +0000 |
commit | c26c1c4b3d5d4b7bd9f986ab67608419e7abefe1 (patch) | |
tree | abb5ed90dd57fb2bed2c7bf077f302f8c6c2bbba /vl.c | |
parent | c032e2a98c1c23bdd281ebf0aa4593e87813e1e0 (diff) | |
download | qemu-c26c1c4b3d5d4b7bd9f986ab67608419e7abefe1.zip qemu-c26c1c4b3d5d4b7bd9f986ab67608419e7abefe1.tar.gz qemu-c26c1c4b3d5d4b7bd9f986ab67608419e7abefe1.tar.bz2 |
Support for unidirectional pipes, by Ed Swierk.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2267 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'vl.c')
-rw-r--r-- | vl.c | 23 |
1 files changed, 17 insertions, 6 deletions
@@ -1297,12 +1297,23 @@ CharDriverState *qemu_chr_open_file_out(const char *file_out) CharDriverState *qemu_chr_open_pipe(const char *filename) { - int fd; - - fd = open(filename, O_RDWR | O_BINARY); - if (fd < 0) - return NULL; - return qemu_chr_open_fd(fd, fd); + int fd_in, fd_out; + char filename_in[256], filename_out[256]; + + 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); } |