PSARC/2007/218 caller_context_t in all VOPs

PSARC/2007/227 VFS Feature Registration and ACL on Create
PSARC/2007/244 ZFS Case-insensitive support
PSARC/2007/315 Extensible Attribute Interfaces
PSARC/2007/394 ls(1) new command line options '-/' and '-%': CIFS system attributes support
PSARC/2007/403 Modified Access Checks for CIFS
PSARC/2007/410 Add system attribute support to chmod(1)
PSARC/2007/432 CIFS system attributes support for cp(1), pack(1), unpack(1), compress(1) and uncompress(1)
PSARC/2007/444 Rescind SETTABLE Attribute
PSARC/2007/459 CIFS system attributes support for cpio(1), pax(1), tar(1)
PSARC/2007/546 Update utilities to match CIFS system attributes changes.
PSARC/2007/560 ZFS sharesmb property
4890717 want append-only files
6417428 Case-insensitive file system name lookup to support CIFS
6417435 DOS attributes and additional timestamps to support for CIFS
6417442 File system quarantined and modified attributes to support an integrated Anti-Virus service
6417453 FS boolean property for rejecting/allowing invalid UTF-8 sequences in file names
6473733 RFE: Need support for open-deny modes
6473755 RFE:  Need ability to reconcile oplock and delegation conflicts
6494624 sharemgr needs to support CIFS shares better
6546705 All vnode operations need to pass caller_context_t
6546706 Need VOP_SETATTR/VOP_GETATTR to support new, optional attributes
6546893 Solaris system attribute support
6550962 ZFS ACL inheritance needs to be enhanced to support Automatic Inheritance
6553589 RFE: VFS Feature Registration facility
6553770 RFE: ZFS support for ACL-on-CREATE (PSARC 2007/227)
6565581 ls(1) should support file system attributes proposed in PSARC/2007/315
6566784 NTFS streams are not copied along with the files.
6576205 cp(1), pack(1) and compress(1) should support file system attributes proposed in PSARC/2007/315
6578875 RFE: kernel interfaces for nbmand need improvement
6578883 RFE: VOP_SHRLOCK needs additional access types
6578885 chmod(1) should support file system attributes proposed in PSARC/2007/315
6578886 RFE: disallow nbmand state to change on remount
6583349 ACL parser needs to support audit/alarm ACE types
6590347 tar(1) should support filesystem attributes proposed in PSARC/2007/315
6597357 *tar* xv@ doesn't show the hidden directory even though it is restored
6597360 *tar* should re-init xattr info if openat() fails during extraction of and extended attribute
6597368 *tar* cannot restore hard linked extended attributes
6597374 *tar* doesn't display "x " when hard linked attributes are restored
6597375 *tar* extended attribute header off by one
6614861 *cpio* incorrectly archives extended system attributes with -@
6614896 *pax* incorrectly archives extended system attributes with -@
6615225 *tar* incorrectly archives extended system attributes with -@
6617183 CIFS Service - PSARC 2006/715

1 files changed, 273 insertions, 0 deletions

diff --git a/usr/src/lib/libc/port/gen/attrat.c b/usr/src/lib/libc/port/gen/attrat.c
new file mode 100644
index 0000000000..f2a26d17cd
--- /dev/null
+++ b/usr/src/lib/libc/port/gen/attrat.c
@@ -0,0 +1,273 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include "synonyms.h"
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <mtlib.h>
+#include <attr.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include <sys/filio.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <stdio.h>
+
+static int (*nvpacker)(nvlist_t *, char **, size_t *, int, int);
+static int (*nvsize)(nvlist_t *, size_t *, int);
+static int (*nvunpacker)(char *, size_t, nvlist_t **);
+static mutex_t attrlock = DEFAULTMUTEX;
+static int initialized;
+extern int __openattrdirat(int basefd, const char *name);
+
+static char *xattr_view_name[XATTR_VIEW_LAST] = {
+	VIEW_READONLY,
+	VIEW_READWRITE
+};
+
+static int
+attrat_init()
+{
+	if (initialized == 0) {
+		lmutex_lock(&attrlock);
+		if (initialized == 1) {
+			lmutex_unlock(&attrlock);
+			return (0);
+		}
+
+		void *libnvhandle = dlopen("libnvpair.so.1", RTLD_LAZY);
+		if (libnvhandle == NULL || (nvpacker = (int (*)(nvlist_t *,
+		    char **, size_t *, int, int)) dlsym(libnvhandle,
+		    "nvlist_pack")) == NULL ||
+		    (nvsize = (int (*)(nvlist_t *,
+		    size_t *, int)) dlsym(libnvhandle,
+		    "nvlist_size")) == NULL ||
+		    (nvunpacker = (int (*)(char *, size_t,
+		    nvlist_t **)) dlsym(libnvhandle,
+		    "nvlist_unpack")) == NULL) {
+			if (libnvhandle)
+				dlclose(libnvhandle);
+			lmutex_unlock(&attrlock);
+			return (EINVAL);
+		}
+
+		initialized = 1;
+		lmutex_unlock(&attrlock);
+	}
+	return (0);
+}
+
+static int
+attr_nv_pack(nvlist_t *request, void **nv_request, size_t *nv_requestlen)
+{
+	size_t bufsize;
+	char *packbuf = NULL;
+
+	if (nvsize(request, &bufsize, NV_ENCODE_XDR) != 0) {
+		return (EINVAL);
+	}
+
+	packbuf = malloc(bufsize);
+	if (packbuf == NULL)
+		return (EINVAL);
+	if (nvpacker(request, &packbuf, &bufsize, NV_ENCODE_XDR, 0) != 0) {
+		free(packbuf);
+	} else {
+		*nv_request = (void *)packbuf;
+		*nv_requestlen = bufsize;
+	}
+	return (0);
+}
+
+static const char *
+view_to_name(xattr_view_t view)
+{
+	if (view >= XATTR_VIEW_LAST || view < 0)
+		return (NULL);
+	return (xattr_view_name[view]);
+}
+
+static int
+xattr_openat(int basefd, xattr_view_t view, int mode)
+{
+	const char *xattrname;
+	int xattrfd;
+	int oflag;
+
+	switch (view) {
+	case XATTR_VIEW_READONLY:
+		oflag = O_RDONLY;
+		break;
+	case XATTR_VIEW_READWRITE:
+		oflag = mode & O_RDWR;
+		break;
+	default:
+		(void) __set_errno(EINVAL);
+		return (-1);
+	}
+	if (mode & O_XATTR)
+		oflag |= O_XATTR;
+
+	xattrname = view_to_name(view);
+	xattrfd = openat(basefd, xattrname, oflag);
+	if (xattrfd < 0)
+		return (xattrfd);
+	/* Don't cache sysattr info (advisory) */
+	(void) directio(xattrfd, DIRECTIO_ON);
+	return (xattrfd);
+}
+
+static int
+cgetattr(int fd, nvlist_t **response)
+{
+	int error;
+	int bytesread;
+	void *nv_response;
+	size_t nv_responselen;
+	struct stat buf;
+
+	if (error = attrat_init())
+		return (__set_errno(error));
+	if ((error = fstat(fd, &buf)) != 0)
+		return (__set_errno(error));
+	nv_responselen = buf.st_size;
+
+	if ((nv_response = malloc(nv_responselen)) == NULL)
+		return (__set_errno(ENOMEM));
+	bytesread = read(fd, nv_response, nv_responselen);
+	if (bytesread != nv_responselen)
+		return (__set_errno(EFAULT));
+
+	error = nvunpacker(nv_response, nv_responselen, response);
+	free(nv_response);
+	return (error);
+}
+
+static int
+csetattr(int fd, nvlist_t *request)
+{
+	int error, saveerrno;
+	int byteswritten;
+	void *nv_request;
+	size_t nv_requestlen;
+
+	if (error = attrat_init())
+		return (__set_errno(error));
+
+	if ((error = attr_nv_pack(request, &nv_request, &nv_requestlen)) != 0)
+		return (__set_errno(error));
+
+	(void) __set_errno(0);
+	byteswritten = write(fd, nv_request, nv_requestlen);
+	if (byteswritten != nv_requestlen) {
+		saveerrno = errno;
+		free(nv_request);
+		errno = saveerrno;
+		return (__set_errno(errno));
+	}
+
+	free(nv_request);
+	return (0);
+}
+
+int
+fgetattr(int basefd, xattr_view_t view, nvlist_t **response)
+{
+	int error, saveerrno, xattrfd;
+
+	if ((xattrfd = xattr_openat(basefd, view, O_XATTR)) < 0)
+		return (xattrfd);
+
+	error = cgetattr(xattrfd, response);
+	saveerrno = errno;
+	(void) close(xattrfd);
+	errno = saveerrno;
+	return (error);
+}
+
+int
+fsetattr(int basefd, xattr_view_t view, nvlist_t *request)
+{
+	int error, saveerrno, xattrfd;
+
+	if ((xattrfd = xattr_openat(basefd, view, O_RDWR | O_XATTR)) < 0)
+		return (xattrfd);
+	error = csetattr(xattrfd, request);
+	saveerrno = errno;
+	(void) close(xattrfd);
+	errno = saveerrno;
+	return (error);
+}
+
+int
+getattrat(int basefd, xattr_view_t view, const char *name, nvlist_t **response)
+{
+	int error, saveerrno, namefd, xattrfd;
+
+	if ((namefd = __openattrdirat(basefd, name)) < 0)
+		return (namefd);
+
+	if ((xattrfd = xattr_openat(namefd, view, 0)) < 0) {
+		saveerrno = errno;
+		(void) close(namefd);
+		errno = saveerrno;
+		return (xattrfd);
+	}
+
+	error = cgetattr(xattrfd, response);
+	saveerrno = errno;
+	(void) close(namefd);
+	(void) close(xattrfd);
+	errno = saveerrno;
+	return (error);
+}
+
+int
+setattrat(int basefd, xattr_view_t view, const char *name, nvlist_t *request)
+{
+	int error, saveerrno, namefd, xattrfd;
+
+	if ((namefd = __openattrdirat(basefd, name)) < 0)
+		return (namefd);
+
+	if ((xattrfd = xattr_openat(namefd, view, O_RDWR)) < 0) {
+		saveerrno = errno;
+		(void) close(namefd);
+		errno = saveerrno;
+		return (xattrfd);
+	}
+
+	error = csetattr(xattrfd, request);
+	saveerrno = errno;
+	(void) close(namefd);
+	(void) close(xattrfd);
+	errno = saveerrno;
+	return (error);
+}