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* ext/pty/pty.c (get_device_once): use O_CLOEXEC for posix_openpt if

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available.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33580 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2011-10-31 03:39:01 +00:00
parent da5ae5544d
commit 92a8bfacd9
2 changed files with 15 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon Oct 31 12:37:50 2011 Tanaka Akira <akr@fsij.org>
* ext/pty/pty.c (get_device_once): use O_CLOEXEC for posix_openpt if
available.
Mon Oct 31 12:05:24 2011 Tanaka Akira <akr@fsij.org>
* io.c (rb_cloexec_dup2): check oldfd == newfd at first.

11
ext/pty/pty.c
View file

@ -285,6 +285,7 @@ get_device_once(int *master, int *slave, char SlaveName[DEVICELEN], int nomesg,
int masterfd = -1, slavefd = -1;
char *slavedevice;
struct sigaction dfl, old;
int flags;
dfl.sa_handler = SIG_DFL;
dfl.sa_flags = 0;
@ -297,7 +298,14 @@ get_device_once(int *master, int *slave, char SlaveName[DEVICELEN], int nomesg,
if (grantpt(masterfd) == -1) goto grantpt_error;
rb_fd_set_cloexec(masterfd);
#else
if ((masterfd = posix_openpt(O_RDWR|O_NOCTTY)) == -1) goto error;
flags = O_RDWR|O_NOCTTY;
# ifdef O_CLOEXEC
/* glibc posix_openpt() in GNU/Linux calls open("/dev/ptmx", flags) internally.
* So version dependency on GNU/Linux is same as O_CLOEXEC with open().
* O_CLOEXEC is available since Linux 2.6.23. Linux 2.6.18 silently ignore it. */
flags |= O_CLOEXEC;
# endif
if ((masterfd = posix_openpt(flags)) == -1) goto error;
rb_fd_set_cloexec(masterfd);
if (sigaction(SIGCHLD, &dfl, &old) == -1) goto error;
if (grantpt(masterfd) == -1) goto grantpt_error;
@ -349,6 +357,7 @@ get_device_once(int *master, int *slave, char SlaveName[DEVICELEN], int nomesg,
return 0;
#elif defined HAVE__GETPTY
/* SGI IRIX */
char *name;
mode_t mode = nomesg ? 0600 : 0622;