diff options
author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-06-26 13:01:16 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-06-26 13:01:16 +0000 |
commit | c86115e9961c85736d2672a015e3113780551db1 (patch) | |
tree | 8b6279a5c8263347b7ba22c97fb68d9d6b6228c4 /ext | |
parent | cadee06b2a09c309b0fb944251a8105b449d7dd1 (diff) | |
download | ruby-c86115e9961c85736d2672a015e3113780551db1.tar.gz |
* ext/pty/pty.c (pty_getpty): check dup failure.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23861 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext')
-rw-r--r-- | ext/pty/pty.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/ext/pty/pty.c b/ext/pty/pty.c index 5db349872c..b4394c207c 100644 --- a/ext/pty/pty.c +++ b/ext/pty/pty.c @@ -511,7 +511,27 @@ pty_detach_process(struct pty_info *info) return Qnil; } -/* ruby function: getpty */ +/* + * call-seq: + * PTY.spawn(command...) {|r, w, pid| ... } => nil + * PTY.spawn(command...) => r, w, pid + * PTY.getpty(command...) {|r, w, pid| ... } => nil + * PTY.getpty(command...) => r, w, pid + * + * spawns the specified command on a newly allocated pty. + * + * The command's controlling tty is set to the slave device of the pty. + * Also its standard input/output/error is redirected to the slave device. + * + * PTY.spawn returns two IO objects and PID. + * PID is the process ID of the command. + * The two IO objects are connected to the master device of the pty. + * The first IO object is opened as read mode and + * The second is opened as write mode. + * + * If a block is given, two IO objects and PID is yielded. + * + */ static VALUE pty_getpty(int argc, VALUE *argv, VALUE self) { @@ -533,6 +553,8 @@ pty_getpty(int argc, VALUE *argv, VALUE self) wfptr->mode = rb_io_mode_flags("w") | FMODE_SYNC; wfptr->fd = dup(info.fd); + if (wfptr->fd == -1) + rb_sys_fail("dup()"); wfptr->pathv = rfptr->pathv; res = rb_ary_new2(3); |