* 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.
+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.
+
Fri Mar 24 02:35:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* misc/Makefile (headers): Add utmp.h.
fopenport \
vpprintf \
ports-get ports-set hurdports hurdmsg \
- $(sig) $(dtable) hurdinline
+ $(sig) $(dtable) hurdinline port-cleanup
sig = hurdsig hurdfault faultexc siginfo hurd-raise preempt-sig \
trampoline longjmp-ts catch-exc exc2signal hurdkill
dtable = dtable port2fd new-fd alloc-fd intern-fd \
/* Lightweight user references for ports.
-Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
}
+/* Cleanup function for non-local exits. */
+extern void _hurd_port_cleanup (void *, jmp_buf, int);
+
/* Get a reference to *PORT, which is locked.
Pass return value and LINK to _hurd_port_free when done. */
mach_port_t result;
result = port->port;
if (result != MACH_PORT_NULL)
- _hurd_userlink_link (&port->users, link);
+ {
+ link->cleanup = &_hurd_port_cleanup;
+ link->cleanup_data = (void *) result;
+ _hurd_userlink_link (&port->users, link);
+ }
__spin_unlock (&port->lock);
return result;
}
will be passed to sigreturn after running the handler for a pending
signal, instead of examining the thread state. */
struct sigcontext *context;
+
+ /* This is the head of the thread's list of active resources; see
+ <hurd/userlink.h> for details. This member is only used by the
+ thread itself, and always inside a critical section. */
+ struct hurd_userlink *active_resources;
};
/* Linked list of states of all threads whose state has been asked for. */
/* Support for chains recording users of a resource; `struct hurd_userlink'.
-Copyright (C) 1994 Free Software Foundation, Inc.
+Copyright (C) 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#define __need_NULL
#include <stddef.h>
-
-/* This structure is simply a doubly-linked list. Users of a given
- resource are recorded by their presence in a list associated with that
- resource. A user attaches his own link (in local storage) to a shared
- chain at the time he begins using some resource. When finished with
- that resource, the user removes his link from the chain. If his link is
- the last (there are no other users of the resource), and his chain has
- been detached from the shared cell (the resource in the cell has been
- replaced), then the user deallocates the resource that he used. */
+#include <hurd/signal.h>
+#include <setjmp.h>
+
+
+/* This structure records a link in two doubly-linked lists.
+ We call these the per-resource user list and the per-thread
+ active-resource list.
+
+ Users of a given resource are recorded by their presence in a list
+ associated with that resource. A user attaches his own link (in local
+ storage on his stack) to a shared chain at the time he begins using some
+ resource. When finished with that resource, the user removes his link
+ from the chain. If his link is the last (there are no other users of
+ the resource), and his chain has been detached from the shared cell (the
+ resource in the cell has been replaced), then the user deallocates the
+ resource that he used.
+
+ All uses of shared resources by a single thread are linked together by
+ its `active-resource' list; the head of this list is stored in the
+ per-thread sigstate structure. When the thread makes a non-local exit
+ (i.e. longjmp), it will examine its active-resource list, and each link
+ residing in a stack frame being jumped out of will be unlinked from both
+ the resource's user list and the thread's active-resource list, and
+ deallocate the resource if that was the last user link for that resource.
+
+ NOTE: Access to a thread's active-resource list must always be done
+ inside a signal-proof critical section; the functions in this file
+ assume they are called inside a critical section, and do no locking of
+ their own. Also important: the longjmp cleanup relies on all userlink
+ structures residing on the stack of the using thread. */
struct hurd_userlink
{
- struct hurd_userlink *next, **prevp;
+ struct
+ {
+ struct hurd_userlink *next, **prevp;
+ } resource, thread;
+
+ /* This function is called when a non-local exit
+ unwinds the frame containing this link. */
+ void (*cleanup) (void *cleanup_data, jmp_buf env, int val);
+ void *cleanup_data;
};
_hurd_userlink_link (struct hurd_userlink **chainp,
struct hurd_userlink *link)
{
- link->next = *chainp;
- if (link->next)
- link->next->prevp = &link->next;
- link->prevp = chainp;
+ struct hurd_userlink **thread_chainp;
+
+ link->resource.next = *chainp;
+ if (link->resource.next)
+ link->resource.next->thread.prevp = &link->resource.next;
+ link->resource.prevp = chainp;
*chainp = link;
+
+ /* Also chain it on the current thread's list of active resources. */
+ thread_chainp = &_hurd_self_sigstate ()->active_resources;
+ link->thread.next = *thread_chainp;
+ if (link->thread.next)
+ link->thread.next->thread.prevp = &link->thread.next;
+ link->thread.prevp = thread_chainp;
+ *thread_chainp = link;
}
-/* Detach LINK from its chain. If the return value is nonzero, the caller
- should deallocate the resource he started using after attaching LINK to
- the chain it's on. If the return value is zero, then someone else is
- still using the resource. */
+/* Detach LINK from its chain. Returns nonzero iff this was the
+ last user of the resource and it should be deallocated. */
_EXTERN_INLINE int
_hurd_userlink_unlink (struct hurd_userlink *link)
{
- /* The caller should deallocate the resource he used if his chain has
- been detached from the cell (and thus has a nil `prevp'), and there is
- no next link representing another user reference to the same resource. */
- int dealloc = ! link->next && ! link->prevp;
+ /* We should deallocate the resource used if this chain has been detached
+ from the cell (and thus has a nil `prevp'), and there is no next link
+ representing another user reference to the same resource. */
+ int dealloc = ! link->resource.next && ! link->resource.prevp;
/* Remove our link from the chain of current users. */
- if (link->prevp)
- *link->prevp = link->next;
- if (link->next)
- link->next->prevp = link->prevp;
+ if (link->resource.prevp)
+ *link->resource.prevp = link->resource.next;
+ if (link->resource.next)
+ link->resource.next->resource.prevp = link->resource.prevp;
+
+ /* Remove our link from the chain of currently active resources
+ for this thread. */
+ *link->thread.prevp = link->thread.next;
+ if (link->thread.next)
+ link->thread.next->thread.prevp = link->thread.prevp;
return dealloc;
}
/* Detach the chain of current users from the cell. The last user to
remove his link from that chain will deallocate the old resource. */
- (*chainp)->prevp = NULL;
+ (*chainp)->resource.prevp = NULL;
*chainp = NULL;
return 0;
}
--- /dev/null
+/* Cleanup function for `struct hurd_port' users who longjmp.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <mach.h>
+#include <hurd/port.h>
+
+/* The last user of the send right CLEANUP_DATA is now doing
+ `longjmp (ENV, VAL)', and this will unwind the frame of
+ that last user. Deallocate the right he will never get back to using. */
+
+void
+_hurd_port_cleanup (void *cleanup_data, jmp_buf env, int val)
+{
+ __mach_port_deallocate (__mach_task_self (), (mach_port_t) cleanup_data);
+}
goto puntfd;
if (S_ISDIR (st.st_mode))
{
- /* LOCALE/LC_* is a directory; open LOCALE/LC_*/SYS_LC_* instead. */
+ /* LOCALE/LC_foo is a directory; open LOCALE/LC_foo/SYS_LC_foo
+ instead. */
__close (fd);
memcpy (stpcpy (strchr (file, '\0'), "SYS_"), catname, catlen);
fd = __open (file, O_RDONLY);
install-lib := libbsd-compat.a libg.a
non-lib.a := libbsd-compat.a
+# Build the -lutil library with these extra functions.
+extra-libs := libutil
+libutil-routines:= login login_tty logout logwtmp pty
+
+
include ../Rules
+
$(objpfx)libbsd-compat.a: $(objpfx)bsd-compat.o
rm -f $@
ln $< $@
-lib: $(objpfx)libbsd-compat.a
-
$(objpfx)libg.a: $(dep-dummy-lib); $(make-dummy-lib)
-lib: $(objpfx)libg.a
--- /dev/null
+/*
+ * Copyright (c) 1988, 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[] = "@(#)login.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <utmp.h>
+#include <stdio.h>
+
+void
+login(ut)
+ struct utmp *ut;
+{
+ register int fd;
+ int tty;
+
+ tty = ttyslot();
+ if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY|O_CREAT, 0644)) >= 0) {
+ (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), L_SET);
+ (void)write(fd, ut, sizeof(struct utmp));
+ (void)close(fd);
+ }
+ if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
+ (void)write(fd, ut, sizeof(struct utmp));
+ (void)close(fd);
+ }
+}
--- /dev/null
+/*-
+ * 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[] = "@(#)login_tty.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+int
+login_tty(fd)
+ int fd;
+{
+ (void) setsid();
+ if (ioctl(fd, TIOCSCTTY, (char *)NULL) == -1)
+ return (-1);
+ (void) dup2(fd, 0);
+ (void) dup2(fd, 1);
+ (void) dup2(fd, 2);
+ if (fd > 2)
+ (void) close(fd);
+ return (0);
+}
--- /dev/null
+/*
+ * Copyright (c) 1988, 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[] = "@(#)logout.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <fcntl.h>
+#include <utmp.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct utmp UTMP;
+
+int
+logout(line)
+ register char *line;
+{
+ register int fd;
+ UTMP ut;
+ int rval;
+
+ if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0)
+ return(0);
+ rval = 0;
+ while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) {
+ if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE))
+ continue;
+ bzero(ut.ut_name, UT_NAMESIZE);
+ bzero(ut.ut_host, UT_HOSTSIZE);
+ (void)time(&ut.ut_time);
+ (void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR);
+ (void)write(fd, &ut, sizeof(UTMP));
+ rval = 1;
+ }
+ (void)close(fd);
+ return(rval);
+}
--- /dev/null
+/*
+ * Copyright (c) 1988, 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[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+
+#include <unistd.h>
+#include <utmp.h>
+
+logwtmp(line, name, host)
+ char *line, *name, *host;
+{
+ struct utmp ut;
+ struct stat buf;
+ int fd;
+ time_t time();
+ char *strncpy();
+
+ if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
+ return;
+ if (fstat(fd, &buf) == 0) {
+ (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
+ (void) strncpy(ut.ut_name, name, sizeof(ut.ut_name));
+ (void) strncpy(ut.ut_host, host, sizeof(ut.ut_host));
+ (void) time(&ut.ut_time);
+ if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
+ sizeof(struct utmp))
+ (void) ftruncate(fd, buf.st_size);
+ }
+ (void) close(fd);
+}
/* Alternate names for values for the WHENCE argument to `lseek'.
These are the same as SEEK_SET, SEEK_CUR, and SEEK_END, respectively. */
+#ifndef L_SET
#define L_SET 0 /* Seek from beginning of file. */
#define L_INCR 1 /* Seek from current position. */
#define L_XTND 2 /* Seek from end of file. */
+#endif
/* Operations for the `flock' call. */
"Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
before changing it!
- Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94
+ Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95
Free Software Foundation, Inc.
This file is part of the GNU C Library. Its master source is NOT part of
optarg = NULL;
if (optind == 0)
- optstring = _getopt_initialize (optstring);
+ {
+ optstring = _getopt_initialize (optstring);
+ optind = 1; /* Don't scan ARGV[0], the program name. */
+ }
if (nextchar == NULL || *nextchar == '\0')
{
#define SEEK_END 2 /* Seek from end of file. */
#endif
+#if defined (__USE_BSD) && !defined (L_SET)
+/* Old BSD names for the same constants; just for compatibility. */
+#define L_SET SEEK_SET
+#define L_INCR SEEK_CUR
+#define L_XTND SEEK_END
+#endif
+
+
/* Move FD's file position to OFFSET bytes from the
beginning of the file (if WHENCE is SEEK_SET),
the current position (if WHENCE is SEEK_CUR),
extern int __isatty __P ((int __fd));
extern int isatty __P ((int __fd));
+#ifdef __USE_BSD
+/* Return the index into the active-logins file (utmp) for
+ the terminal FD is open on. */
+extern int ttyslot ((int __fd));
+#endif
+
/* Make a link to FROM named TO. */
extern int __link __P ((__const char *__from, __const char *__to));
headers := setjmp.h jmp_buf.h
routines := setjmp sigjmp bsd-setjmp bsd-_setjmp \
- longjmp __longjmp
+ longjmp __longjmp jmp-unwind
tests := tst-setjmp
#include <signal.h>
+extern void _longjmp_unwind (jmp_buf env, int val);
+
/* Set the signal mask to the one specified in ENV, and jump
to the position specified in ENV, causing the setjmp
call there to return VAL, or 1 if VAL is 0. */
void
longjmp (sigjmp_buf env, int val)
{
+ /* Perform any cleanups needed by the frames being unwound. */
+ _longjmp_unwind (env, val);
+
if (env[0].__mask_was_saved)
/* Restore the saved signal mask. */
(void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
--- /dev/null
+/*-
+ * 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);
+}
__ptr_t __sp;
__ptr_t __pc;
} __jmp_buf[1];
+
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+ ((__ptr_t) (address) < (jmpbuf)[0].__sp)
--- /dev/null
+/* _longjmp_unwind -- Clean up stack frames unwound by longjmp. Hurd version.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <setjmp.h>
+#include <hurd/signal.h>
+#include <hurd/userlink.h>
+#include <assert.h>
+
+/* This function is called by `longjmp' (with its arguments) to restore
+ active resources to a sane state before the frames code using them are
+ jumped out of. */
+
+void
+_longjmp_unwind (jmp_buf env, int val)
+{
+ struct hurd_sigstate *ss = _hurd_self_sigstate ();
+ struct hurd_userlink *link;
+
+ /* All access to SS->active_resources must take place inside a critical
+ section where signal handlers cannot run. */
+ __spin_lock (&ss->lock);
+ assert (! ss->critical_section);
+ ss->critical_section = 1;
+ __spin_unlock (&ss->lock);
+
+#ifndef _JMPBUF_UNWINDS
+ #error "sysdeps/MACHINE/jmp_buf.h fails to define _JMPBUF_UNWINDS"
+#endif
+
+ /* Iterate over the current thread's list of active resources.
+ Process the head portion of the list whose links reside
+ in stack frames being unwound by this jump. */
+
+ for (link = ss->active_resources;
+ link && _JMPBUF_UNWINDS (env[0].__jmpbuf, link);
+ link = link->thread.next)
+ /* Remove this link from the resource's users list,
+ since the frame using the resource is being unwound.
+ This call returns nonzero if that was the last user. */
+ if (_hurd_userlink_unlink (link))
+ /* One of the frames being unwound by the longjmp was the last user
+ of its resource. Call the cleanup function to deallocate it. */
+ (*link->cleanup) (link->cleanup_data, env, val);
+
+ _hurd_critical_section_unlock (ss);
+}
-/* Define the machine-dependent type `jmp_buf'. Mips version.
- Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+/* Define the machine-dependent type `jmp_buf'. MIPS version.
+ Copyright (C) 1992, 1993, 1995 Free Software Foundation, Inc.
Contributed by Brendan Kehoe (brendan@zen.org).
The GNU C Library is free software; you can redistribute it and/or
/* Offset to the program counter in `jmp_buf'. */
#define JB_PC 0
#endif
+
+
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+ ((__ptr_t) (address) < (jmpbuf)[0].__sp)
--- /dev/null
+/* _longjmp_unwind -- Clean up stack frames unwound by longjmp. Stub version.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <setjmp.h>
+
+void
+_longjmp_unwind (jmp_buf env, int val)
+{
+
+ /* This function can perform any cleanups necessary to safely unwind the
+ stack frames around the current context which ENV unwinds past. */
+
+}
projects / thirdparty / glibc.git / commitdiff
