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Support for unidirectional pipes, by Ed Swierk.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2267 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2006-12-22 19:25:31 +00:00
parent c032e2a98c
commit c26c1c4b3d
1 changed files with 16 additions and 5 deletions
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21
vl.c
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@ -1297,12 +1297,23 @@ CharDriverState *qemu_chr_open_file_out(const char *file_out)
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);
}