Mon Nov 27 19:24:18 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> cvs/libc-951129 cvs/libc-951128

	* posix/Makefile (routines): Add getsid.
	* sysdeps/unix/sysv/linux/getsid.S: New file.
	* sysdeps/mach/hurd/getsid.c: New file.
	* sysdeps/stub/getsid.c: New file.
	* posix/unistd.h [__USE_GNU]: Declare getsid.

6 files changed, 104 insertions, 4 deletions

diff --git a/ChangeLog b/ChangeLog
index b8f235e3a8..9f9e250141 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Mon Nov 27 19:24:18 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* posix/Makefile (routines): Add getsid.
+	* sysdeps/unix/sysv/linux/getsid.S: New file.
+	* sysdeps/mach/hurd/getsid.c: New file.
+	* sysdeps/stub/getsid.c: New file.
+	* posix/unistd.h [__USE_GNU]: Declare getsid.
+
 Sun Nov 26 12:44:38 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
 	* libc-symbols.h (N_): New macro.
diff --git a/posix/Makefile b/posix/Makefile
index 937dc04880..4760512af6 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -37,7 +37,7 @@ routines :=								      \
 	execve fexecve execv execle execl execvp execlp			      \
 	getpid getppid							      \
 	getuid geteuid getgid getegid getgroups setuid setgid group_member    \
-	getpgid setpgid getpgrp setsid					      \
+	getpgid setpgid getpgrp getsid setsid				      \
 	getlogin setlogin						      \
 	pathconf sysconf fpathconf					      \
 	glob fnmatch regex						      \
@@ -59,7 +59,7 @@ lib: $(objpfx)libposix.a
 
 glob.tar: glob/ChangeLog glob/COPYING.LIB \
 	  glob/Makefile.in glob/configure glob/configure.in glob/configure.bat\
-	  glob/fnmatch.h glob/glob.h glob/fnmatch.c glob/glob.c	  
+	  glob/fnmatch.h glob/glob.h glob/fnmatch.c glob/glob.c
 	tar cho$(verbose)f $@ $^
 glob/%.c: %.c
 	rm -f $@
diff --git a/posix/unistd.h b/posix/unistd.h
index 62c25fc09b..02dcf750e0 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -344,6 +344,11 @@ extern int setpgrp __P ((__pid_t __pid, __pid_t __pgrp));
 extern __pid_t __setsid __P ((void));
 extern __pid_t setsid __P ((void));
 
+#ifdef __USE_GNU
+/* Return the session ID of the given process.  */
+extern __pid_t getsid __P ((__pid_t));
+#endif
+
 /* Get the real user ID of the calling process.  */
 extern __uid_t __getuid __P ((void));
 extern __uid_t getuid __P ((void));
@@ -660,7 +665,7 @@ extern int syscall __P ((int __sysno, ...));
    The CMD argument is one of the following.  */
 
 #define F_ULOCK 0       /* Unlock a previously locked region.  */
-#define F_LOCK  1       /* Lock a region for exclusive use.  */ 
+#define F_LOCK  1       /* Lock a region for exclusive use.  */
 #define F_TLOCK 2       /* Test and lock a region for exclusive use.  */
 #define F_TEST  3       /* Test a region for other processes locks.  */
 
@@ -678,7 +683,7 @@ extern int lockf __P ((int __fd, int __cmd, __off_t __len));
        do __result = (long int) (expression);				      \
        while (__result == -1L && errno == EINTR);			      \
        __result; })
-          
+
 #endif
 
 __END_DECLS
diff --git a/sysdeps/mach/hurd/getsid.c b/sysdeps/mach/hurd/getsid.c
new file mode 100644
index 0000000000..36b8504992
--- /dev/null
+++ b/sysdeps/mach/hurd/getsid.c
@@ -0,0 +1,35 @@
+/* getsid -- Return session ID of a process.  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 <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <hurd.h>
+
+pid_t
+getsid (pid_t pid)
+{
+  error_t err;
+  pid_t sid;
+
+  err = __USEPORT (PROC, __proc_getsid (port, pid, &sid));
+  if (err)
+    return (pid_t) __hurd_fail (err);
+  return sid;
+}
diff --git a/sysdeps/stub/getsid.c b/sysdeps/stub/getsid.c
new file mode 100644
index 0000000000..af474c5e4d
--- /dev/null
+++ b/sysdeps/stub/getsid.c
@@ -0,0 +1,29 @@
+/* getsid -- Return session ID of a process.  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 <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+
+pid_t
+getsid (pid_t pid)
+{
+  errno = ENOSYS;
+  return (pid_t) -1;
+}
diff --git a/sysdeps/unix/sysv/linux/getsid.S b/sysdeps/unix/sysv/linux/getsid.S
new file mode 100644
index 0000000000..b5c49fb582
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/getsid.S
@@ -0,0 +1,23 @@
+/* getsid -- Return session ID of a process.  System call 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 <sysdep.h>
+
+SYSCALL (getsid, 1)
+	ret