about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/linux/recvmsg.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-07-04 10:39:13 +0000
committerUlrich Drepper <drepper@redhat.com>1998-07-04 10:39:13 +0000
commitba9234d947af45f15b1e4dece1a9cd447cecc038 (patch)
treefb6ec34cfaf4d1cef1a689164024fc99f2649206 /sysdeps/unix/sysv/linux/recvmsg.c
parent6ef9f70bdbe3fdb7b16d7c9726e624700d774136 (diff)
downloadglibc-ba9234d947af45f15b1e4dece1a9cd447cecc038.tar.gz
glibc-ba9234d947af45f15b1e4dece1a9cd447cecc038.tar.xz
glibc-ba9234d947af45f15b1e4dece1a9cd447cecc038.zip
Update.
1998-07-04 10:14  Ulrich Drepper  <drepper@cygnus.com>

	* libio/Makefile (routines): Add iofread_u and iofwrite_u.
	* libio/Versions: Add fread_unlocked and fwrite_unlocked.

	* Makerules (lib%.so): Adjust ignore pattern for last makefile change.

	* time/tzfile.c (decode): Optimize by using bswap_32.
	(__tzfile_read): Use _unlocked stream functions.  Correct setting of
	__tzname array values.
	(__tzfile_compute): Correct setting of __tzname array values.
	* time/tzset.c (__tzstring): Clean up a bit.

1998-06-29 19:01  Jim Wilson  <wilson@cygnus.com>

	* posix/regex.c (re_comp): Add cast to char * before gettext calls.

1998-06-30  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/bsd/poll.c (__poll): Allocate fd_set dynamically so
	that fd can be bigger than FD_SETSIZE.

1998-07-01  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* nscd/grpcache.c: Include <unistd.h>.
	* nscd/pwdcache.c: Likewise.

	* nis/nis_modify.c: Include <string.h>.
	* nis/nis_add.c: Likewise.
	* nis/nis_checkpoint.c: Likewise.
	* posix/runptests.c: Likewise.
	* sysdeps/generic/statvfs64.c: Likewise.
	* sysdeps/generic/fstatvfs64.c: Likewise.

1998-07-03 13:16  Ulrich Drepper  <drepper@cygnus.com>

	* localedata/charmaps/ISO-8859-9: Change mapping for 0xea, 0xec, 0xef
	to match data from Unicode.
	Reported by Michael Deutschmann <michael@talamasca.wkpowerlink.com>.

1998-07-03 11:45  Ulrich Drepper  <drepper@cygnus.com>

	* stdio-common/printf.h: Define printf_function and
	printf_arginfo_function types using __PMT not __P.
	Reported by Marc Lehmann.

1998-07-02 14:07 -0400  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* assert/test-assert.c: New test.
	* assert/test-assert-perr.c: New test.
	* assert/Makefile (tests): Add test-assert and test-assert-perr.

1998-07-02 13:45  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	BSD-style SCM_CREDS support.

	* sysdeps/unix/sysv/linux/socket.h: Define struct cmsgcred and
	SCM_CREDS.
	* sysdeps/unix/sysv/linux/sendmsg.c: New file.  Convert user
	visible SCM_CREDS packet to what the kernel wants.
	* sysdeps/unix/sysv/linux/recvmsg.c: New file.  Convert
	SCM_CREDS packet output by kernel to what users want.

	* sysdeps/unix/sysv/linux/sendmsg.S: Moved to...
	* sysdeps/unix/sysv/linux/__sendmsg.S: here.
	* sysdeps/unix/sysv/linux/recvmsg.S: Moved to...
	* sysdeps/unix/sysv/linux/__recvmsg.S: here.

	* sysdeps/unix/sysv/linux/Makefile [subdir=socket]: Add
	__sendmsg and __recvmsg to sysdep_routines.
	* sysdeps/unix/sysv/linux/Dist: Add __sendmsg.S and __recvmsg.S.

1998-07-02  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nscd/grpcache.c: Fix gid pointer handling and debug messages.
	* nscd/pwdcache.c: Fix uid pointer handling and debug messages.
	* nscd/nscd.c: Check, if pthread_create fails.

1998-07-02  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* stdio-common/test_rdwr.c (main): Use %Zu for size_t in printf
	format strings.
	* stdio-common/bug1.c (main): Likewise.
	* stdio-common/bug5.c (main): Likewise.
	* stdio-common/tstgetln.c (main): Likewise.
	* elf/sprof.c (generate_call_graph): Likewise.
	(load_shobj): Likewise.
	* posix/runptests.c (main): Likewise.
	* string/tst-strlen.c (main): Likewise.

	* sysdeps/libm-ieee754/e_acos.c (__ieee754_acos): Remove unused
	variable q3.
	* sysdeps/libm-ieee754/e_asin.c (__ieee754_asin): Likewise

1998-07-03  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* wctype/Versions: Add __towctrans.
	Noticed by Alex Buell <alex.buell@tahallah.demon.co.uk>.

1998-07-02  Mark Kettenis  <kettenis@phys.uva.nl>

	* grp/initgroups.c (compat_call): Only call dynamically loaded
	functions if they are really present.

1998-07-02  Mark Kettenis  <kettenis@phys.uva.nl>

	* sysdeps/unix/sysv/linux/bits/sched.h: Move __END_DECLS within
	#ifdef that contains __BEGIN_DECLS.

1998-07-02  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/iofwrite.c: Fix return value when size == 0.

1998-07-01  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* posix/Makefile (distribute): Add annexc.c.
	(generated): Add $(objpfx)annexc and $(objpfx)annexc.out.

1998-07-01  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
	bits/pthreadtypes.h here, and do not clobber headers.

	* sysdeps/unix/sysv/linux/Dist: Add bits/pthreadtypes.h.

1998-07-03  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* timezone/tst-timezone.c: Add tests for tzname variable.

1998-07-03 12:17  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* Makefile [versioning=yes]: Build the mapfiles with a pattern
	rule that lists all of them as targets.
	(sysd-versions): Depend only on Versions.def.  Write a Makefile
	fragment that defines $(vers-libs) based on contents of that file;
	then include it.
	(lib-noranlib): Depend on lib-mapfiles not sysd-versions.
	(lib-mapfiles): New target, depends on sysd-versions and $(vers-libs).
	Predicate all this on avoid-generated unset as well as versioning.

1998-07-03 14:35  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
Diffstat (limited to 'sysdeps/unix/sysv/linux/recvmsg.c')
-rw-r--r--sysdeps/unix/sysv/linux/recvmsg.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/recvmsg.c b/sysdeps/unix/sysv/linux/recvmsg.c
new file mode 100644
index 0000000000..04cf230828
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/recvmsg.c
@@ -0,0 +1,93 @@
+/* Copyright (C) 1998 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sys/socket.h>
+#include <errno.h>
+#include <string.h>
+
+#include <asm/posix_types.h>
+
+/* The kernel expects this structure in SCM_CREDS messages.
+ * Note: sizeof(struct __kernel_ucred) <= sizeof(struct cmsgcred) must hold.
+ */
+struct __kernel_ucred
+{
+  __kernel_pid_t pid;
+  __kernel_uid_t uid;
+  __kernel_gid_t gid;
+};
+
+extern int __recvmsg (int, struct msghdr *, int);
+
+int
+recvmsg (fd, message, flags)
+     int fd;
+     struct msghdr *message;
+     int flags;
+{
+  struct cmsghdr *cm;
+  int ret;
+  int found_creds = 0;
+
+  /* Must check for space first. */
+  cm = CMSG_FIRSTHDR (message);
+  while (cm)
+    {
+      if (cm->cmsg_type == SCM_CREDS)
+	{
+	  if (cm->cmsg_len < CMSG_SPACE (sizeof (struct cmsgcred)))
+	    {
+	      __set_errno (EINVAL);
+	      return -1;
+	    }
+	  found_creds = 1;
+	}
+      cm = CMSG_NXTHDR (message, cm);
+    }
+
+
+  ret = __recvmsg (fd, message, flags);
+
+  if (ret == -1)
+    return ret;
+
+  /* Postprocess the message control block for SCM_CREDS. */
+  cm = CMSG_FIRSTHDR (message);
+  if (found_creds)
+    while (cm)
+      {
+	if (cm->cmsg_type == SCM_CREDS)
+	  {
+	    struct cmsgcred *c = (struct cmsgcred *) CMSG_DATA (cm);
+	    struct __kernel_ucred u;
+	    int i;
+	    memcpy (&u, CMSG_DATA (cm), sizeof (struct __kernel_ucred));
+
+	    c->cmcred_pid = u.pid;
+	    c->cmcred_uid = u.uid;
+	    c->cmcred_gid = u.gid;
+
+	    c->cmcred_euid = -1;
+	    c->cmcred_ngroups = 0;
+	    for (i = 0; i < CMGROUP_MAX; i++)
+	      c->cmcred_groups[i] = -1;
+	  }
+	cm = CMSG_NXTHDR (message, cm);
+      }
+  return ret;
+}