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author | Roland McGrath <roland@gnu.org> | 1995-03-27 10:00:09 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-03-27 10:00:09 +0000 |
commit | 1474b80f017c2fcc18b1de5bbc51884650d30582 (patch) | |
tree | 1baa3c89ef3802cda051fa7f8f9c9bb8c0bf6abd /sysdeps/generic | |
parent | d365fd2cfa4248fcce18fc60d3d90598aa1f534b (diff) | |
download | glibc-1474b80f017c2fcc18b1de5bbc51884650d30582.zip glibc-1474b80f017c2fcc18b1de5bbc51884650d30582.tar.gz glibc-1474b80f017c2fcc18b1de5bbc51884650d30582.tar.bz2 |
Mon Mar 27 02:23:15 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* posix/unistd.h [__USE_BSD] (ttyslot): Declare it.
* posix/unistd.h [__USE_BSD] (L_SET, L_INCR, L_XTND): Define
unless L_SET already defined.
* misc/sys/file.h (L_SET, L_INCR, L_XTND): Don't define if L_SET
already defined.
Incorporated -lutil library from 4.4-Lite.
* misc/Makefile (extra-libs, libutil-routines): New variables.
* misc/login.c, misc/login_tty.c, misc/logout.c, misc/logwtmp.c,
sysdeps/generic/pty.c: New files for -lutil incorporated from 4.4-Lite.
Support simple, light-weight unwind-protect mechanism for longjmp.
* setjmp/longjmp.c: Call _longjmp_unwind first thing.
* sysdeps/mach/hurd/jmp-unwind.c: New file.
* sysdeps/stub/jmp-unwind.c: New file.
* sysdeps/i386/jmp_buf.h (_JMPBUF_UNWINDS): New macro.
* sysdeps/mips/jmp_buf.h (_JMPBUF_UNWINDS): New macro.
* setjmp/Makefile (routines): Add jmp-unwind.
* hurd/hurd/userlink.h (struct hurd_userlink): Move `next' and
`prevp' members into new substructure `resource'; add another such
substructure `thread' and members `cleanup' (function ptr) and
`cleanup_data' (generic ptr).
(_hurd_userlink_link, _hurd_userlink_unlink): Insert/remove LINK
into the `_hurd_self_sigstate ()->active_resources' list via the
`thread' substructure.
* hurd/hurd/port.h (_hurd_port_cleanup): Declare it.
(_hurd_port_locked_get): Set LINK->cleanup to _hurd_port_cleanup and
LINK->cleanup_data' to the port extracted.
* hurd/hurd/signal.h (struct hurd_sigstate): New member
`active_resources'.
* hurd/port-cleanup.c: New file.
* hurd/Makefile (routines): Add port-cleanup.
* malloc/malloc.c: Include errno.h.
Sat Mar 25 18:24:21 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* locale/loadlocale.c (_nl_load_locale): Avoid */ inside comment.
Diffstat (limited to 'sysdeps/generic')
-rw-r--r-- | sysdeps/generic/pty.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/sysdeps/generic/pty.c b/sysdeps/generic/pty.c new file mode 100644 index 0000000..1644aee --- /dev/null +++ b/sysdeps/generic/pty.c @@ -0,0 +1,127 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)pty.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/cdefs.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <fcntl.h> +#include <termios.h> +#include <errno.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <grp.h> + +openpty(amaster, aslave, name, termp, winp) + int *amaster, *aslave; + char *name; + struct termios *termp; + struct winsize *winp; +{ + static char line[] = "/dev/ptyXX"; + register const char *cp1, *cp2; + register int master, slave, ttygid; + struct group *gr; + + if ((gr = getgrnam("tty")) != NULL) + ttygid = gr->gr_gid; + else + ttygid = -1; + + for (cp1 = "pqrs"; *cp1; cp1++) { + line[8] = *cp1; + for (cp2 = "0123456789abcdef"; *cp2; cp2++) { + line[9] = *cp2; + if ((master = open(line, O_RDWR, 0)) == -1) { + if (errno == ENOENT) + return (-1); /* out of ptys */ + } else { + line[5] = 't'; + (void) chown(line, getuid(), ttygid); + (void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP); + (void) revoke(line); + if ((slave = open(line, O_RDWR, 0)) != -1) { + *amaster = master; + *aslave = slave; + if (name) + strcpy(name, line); + if (termp) + (void) tcsetattr(slave, + TCSAFLUSH, termp); + if (winp) + (void) ioctl(slave, TIOCSWINSZ, + (char *)winp); + return (0); + } + (void) close(master); + line[5] = 'p'; + } + } + } + errno = ENOENT; /* out of ptys */ + return (-1); +} + +forkpty(amaster, name, termp, winp) + int *amaster; + char *name; + struct termios *termp; + struct winsize *winp; +{ + int master, slave, pid; + + if (openpty(&master, &slave, name, termp, winp) == -1) + return (-1); + switch (pid = fork()) { + case -1: + return (-1); + case 0: + /* + * child + */ + (void) close(master); + login_tty(slave); + return (0); + } + /* + * parent + */ + *amaster = master; + (void) close(slave); + return (pid); +} |