Adding upstream version 2.4.2.upstream/2.4.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 852 insertions, 0 deletions

diff --git a/lib/replace/xattr.c b/lib/replace/xattr.c
new file mode 100644
index 0000000..c9b7126
--- /dev/null
+++ b/lib/replace/xattr.c
@@ -0,0 +1,852 @@
+/*
+   Unix SMB/CIFS implementation.
+   replacement routines for xattr implementations
+   Copyright (C) Jeremy Allison  1998-2005
+   Copyright (C) Timur Bakeyev        2005
+   Copyright (C) Bjoern Jacke    2006-2007
+   Copyright (C) Herb Lewis           2003
+   Copyright (C) Andrew Bartlett      2012
+
+     ** NOTE! The following LGPL license applies to the replace
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   This 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define UID_WRAPPER_NOT_REPLACE
+#include "replace.h"
+#include "system/filesys.h"
+#include "system/dir.h"
+
+/******** Solaris EA helper function prototypes ********/
+#ifdef HAVE_ATTROPEN
+#define SOLARIS_ATTRMODE S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP
+static int solaris_write_xattr(int attrfd, const char *value, size_t size);
+static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size);
+static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size);
+static int solaris_unlinkat(int attrdirfd, const char *name);
+static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode);
+static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode);
+#endif
+
+/**************************************************************************
+ Wrappers for extended attribute calls. Based on the Linux package with
+ support for IRIX and (Net|Free)BSD also. Expand as other systems have them.
+****************************************************************************/
+
+ssize_t rep_getxattr (const char *path, const char *name, void *value, size_t size)
+{
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	return getxattr(path, name, value, size);
+#else
+
+/* So that we do not recursively call this function */
+#undef getxattr
+	int options = 0;
+	return getxattr(path, name, value, size, 0, options);
+#endif
+#elif defined(HAVE_XATTR_EA)
+	return getea(path, name, value, size);
+#elif defined(HAVE_XATTR_EXTATTR)
+	ssize_t retval;
+	int attrnamespace;
+	const char *attrname;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
+		attrname = name + 7;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_USER;
+		attrname = name + 5;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	/*
+	 * The BSD implementation has a nasty habit of silently truncating
+	 * the returned value to the size of the buffer, so we have to check
+	 * that the buffer is large enough to fit the returned value.
+	 */
+	if((retval=extattr_get_file(path, attrnamespace, attrname, NULL, 0)) >= 0) {
+		if (size == 0) {
+			return retval;
+		} else if (retval > size) {
+			errno = ERANGE;
+			return -1;
+		}
+		if((retval=extattr_get_file(path, attrnamespace, attrname, value, size)) >= 0)
+			return retval;
+	}
+
+	return -1;
+#elif defined(HAVE_XATTR_ATTR)
+	int retval, flags = 0;
+	int valuelength = (int)size;
+	char *attrname = strchr(name,'.') + 1;
+
+	if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+	retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
+	if (size == 0 && retval == -1 && errno == E2BIG) {
+		return valuelength;
+	}
+
+	return retval ? retval : valuelength;
+#elif defined(HAVE_ATTROPEN)
+	ssize_t ret = -1;
+	int attrfd = solaris_attropen(path, name, O_RDONLY, 0);
+	if (attrfd >= 0) {
+		ret = solaris_read_xattr(attrfd, value, size);
+		close(attrfd);
+	}
+	return ret;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+ssize_t rep_fgetxattr (int filedes, const char *name, void *value, size_t size)
+{
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	return fgetxattr(filedes, name, value, size);
+#else
+
+/* So that we do not recursively call this function */
+#undef fgetxattr
+	int options = 0;
+	return fgetxattr(filedes, name, value, size, 0, options);
+#endif
+#elif defined(HAVE_XATTR_EA)
+	return fgetea(filedes, name, value, size);
+#elif defined(HAVE_XATTR_EXTATTR)
+	ssize_t retval;
+	int attrnamespace;
+	const char *attrname;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
+		attrname = name + 7;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_USER;
+		attrname = name + 5;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
+		if (size == 0) {
+			return retval;
+		} else if (retval > size) {
+			errno = ERANGE;
+			return -1;
+		}
+		if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
+			return retval;
+	}
+
+	return -1;
+#elif defined(HAVE_XATTR_ATTR)
+	int retval, flags = 0;
+	int valuelength = (int)size;
+	char *attrname = strchr(name,'.') + 1;
+
+	if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+	retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
+	if (size == 0 && retval == -1 && errno == E2BIG) {
+		return valuelength;
+	}
+	return retval ? retval : valuelength;
+#elif defined(HAVE_ATTROPEN)
+	ssize_t ret = -1;
+	int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
+	if (attrfd >= 0) {
+		ret = solaris_read_xattr(attrfd, value, size);
+		close(attrfd);
+	}
+	return ret;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+#if defined(HAVE_XATTR_EXTATTR)
+
+#define EXTATTR_PREFIX(s)	(s), (sizeof((s))-1)
+
+static struct {
+        int space;
+	const char *name;
+	size_t len;
+}
+extattr[] = {
+	{ EXTATTR_NAMESPACE_SYSTEM, EXTATTR_PREFIX("system.") },
+        { EXTATTR_NAMESPACE_USER, EXTATTR_PREFIX("user.") },
+};
+
+typedef union {
+	const char *path;
+	int filedes;
+} extattr_arg;
+
+static ssize_t bsd_attr_list (int type, extattr_arg arg, char *list, size_t size)
+{
+	ssize_t list_size, total_size = 0;
+	int i, len;
+	size_t t;
+	char *buf;
+	/* Iterate through extattr(2) namespaces */
+	for(t = 0; t < ARRAY_SIZE(extattr); t++) {
+		if (t != EXTATTR_NAMESPACE_USER && geteuid() != 0) {
+			/* ignore all but user namespace when we are not root, see bug 10247 */
+			continue;
+		}
+		switch(type) {
+			case 0:
+				list_size = extattr_list_file(arg.path, extattr[t].space, list, size);
+				break;
+			case 1:
+				list_size = extattr_list_link(arg.path, extattr[t].space, list, size);
+				break;
+			case 2:
+				list_size = extattr_list_fd(arg.filedes, extattr[t].space, list, size);
+				break;
+			default:
+				errno = ENOSYS;
+				return -1;
+		}
+		/* Some error happened. Errno should be set by the previous call */
+		if(list_size < 0)
+			return -1;
+		/* No attributes */
+		if(list_size == 0)
+			continue;
+		/* XXX: Call with an empty buffer may be used to calculate
+		   necessary buffer size. Unfortunately, we can't say, how
+		   many attributes were returned, so here is the potential
+		   problem with the emulation.
+		*/
+		if(list == NULL) {
+			/* Take the worse case of one char attribute names -
+			   two bytes per name plus one more for sanity.
+			*/
+			total_size += list_size + (list_size/2 + 1)*extattr[t].len;
+			continue;
+		}
+		/* Count necessary offset to fit namespace prefixes */
+		len = 0;
+		for(i = 0; i < list_size; i += list[i] + 1)
+			len += extattr[t].len;
+
+		total_size += list_size + len;
+		/* Buffer is too small to fit the results */
+		if(total_size > size) {
+			errno = ERANGE;
+			return -1;
+		}
+		/* Shift results back, so we can prepend prefixes */
+		buf = (char *)memmove(list + len, list, list_size);
+
+		for(i = 0; i < list_size; i += len + 1) {
+			len = buf[i];
+
+			/*
+			 * If for some reason we receive a truncated
+			 * return from call to list xattrs the pascal
+			 * string lengths will not be changed and
+			 * therefore we must check that we're not
+			 * reading garbage data or off end of array
+			 */
+			if (len + i >= list_size) {
+				errno = ERANGE;
+				return -1;
+			}
+			strncpy(list, extattr[t].name, extattr[t].len + 1);
+			list += extattr[t].len;
+			strncpy(list, buf + i + 1, len);
+			list[len] = '\0';
+			list += len + 1;
+		}
+		size -= total_size;
+	}
+	return total_size;
+}
+
+#endif
+
+#if defined(HAVE_XATTR_ATTR) && (defined(HAVE_SYS_ATTRIBUTES_H) || defined(HAVE_ATTR_ATTRIBUTES_H))
+static char attr_buffer[ATTR_MAX_VALUELEN];
+
+static ssize_t irix_attr_list(const char *path, int filedes, char *list, size_t size, int flags)
+{
+	int retval = 0, index;
+	attrlist_cursor_t *cursor = 0;
+	int total_size = 0;
+	attrlist_t * al = (attrlist_t *)attr_buffer;
+	attrlist_ent_t *ae;
+	size_t ent_size, left = size;
+	char *bp = list;
+
+	while (true) {
+	    if (filedes)
+		retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+	    else
+		retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+	    if (retval) break;
+	    for (index = 0; index < al->al_count; index++) {
+		ae = ATTR_ENTRY(attr_buffer, index);
+		ent_size = strlen(ae->a_name) + sizeof("user.");
+		if (left >= ent_size) {
+		    strncpy(bp, "user.", sizeof("user."));
+		    strncat(bp, ae->a_name, ent_size - sizeof("user."));
+		    bp += ent_size;
+		    left -= ent_size;
+		} else if (size) {
+		    errno = ERANGE;
+		    retval = -1;
+		    break;
+		}
+		total_size += ent_size;
+	    }
+	    if (al->al_more == 0) break;
+	}
+	if (retval == 0) {
+	    flags |= ATTR_ROOT;
+	    cursor = 0;
+	    while (true) {
+		if (filedes)
+		    retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+		else
+		    retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
+		if (retval) break;
+		for (index = 0; index < al->al_count; index++) {
+		    ae = ATTR_ENTRY(attr_buffer, index);
+		    ent_size = strlen(ae->a_name) + sizeof("system.");
+		    if (left >= ent_size) {
+			strncpy(bp, "system.", sizeof("system."));
+			strncat(bp, ae->a_name, ent_size - sizeof("system."));
+			bp += ent_size;
+			left -= ent_size;
+		    } else if (size) {
+			errno = ERANGE;
+			retval = -1;
+			break;
+		    }
+		    total_size += ent_size;
+		}
+		if (al->al_more == 0) break;
+	    }
+	}
+	return (ssize_t)(retval ? retval : total_size);
+}
+
+#endif
+
+ssize_t rep_listxattr (const char *path, char *list, size_t size)
+{
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	return listxattr(path, list, size);
+#else
+/* So that we do not recursively call this function */
+#undef listxattr
+	int options = 0;
+	return listxattr(path, list, size, options);
+#endif
+#elif defined(HAVE_XATTR_EA)
+	return listea(path, list, size);
+#elif defined(HAVE_XATTR_EXTATTR)
+	extattr_arg arg;
+	arg.path = path;
+	return bsd_attr_list(0, arg, list, size);
+#elif defined(HAVE_XATTR_ATTR) && defined(HAVE_SYS_ATTRIBUTES_H)
+	return irix_attr_list(path, 0, list, size, 0);
+#elif defined(HAVE_ATTROPEN)
+	ssize_t ret = -1;
+	int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
+	if (attrdirfd >= 0) {
+		ret = solaris_list_xattr(attrdirfd, list, size);
+		close(attrdirfd);
+	}
+	return ret;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+ssize_t rep_flistxattr (int filedes, char *list, size_t size)
+{
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	return flistxattr(filedes, list, size);
+#else
+/* So that we do not recursively call this function */
+#undef flistxattr
+	int options = 0;
+	return flistxattr(filedes, list, size, options);
+#endif
+#elif defined(HAVE_XATTR_EA)
+	return flistea(filedes, list, size);
+#elif defined(HAVE_XATTR_EXTATTR)
+	extattr_arg arg;
+	arg.filedes = filedes;
+	return bsd_attr_list(2, arg, list, size);
+#elif defined(HAVE_XATTR_ATTR)
+	return irix_attr_list(NULL, filedes, list, size, 0);
+#elif defined(HAVE_ATTROPEN)
+	ssize_t ret = -1;
+	int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
+	if (attrdirfd >= 0) {
+		ret = solaris_list_xattr(attrdirfd, list, size);
+		close(attrdirfd);
+	}
+	return ret;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int rep_removexattr (const char *path, const char *name)
+{
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	return removexattr(path, name);
+#else
+/* So that we do not recursively call this function */
+#undef removexattr
+	int options = 0;
+	return removexattr(path, name, options);
+#endif
+#elif defined(HAVE_XATTR_EA)
+	return removeea(path, name);
+#elif defined(HAVE_XATTR_EXTATTR)
+	int attrnamespace;
+	const char *attrname;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
+		attrname = name + 7;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_USER;
+		attrname = name + 5;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	return extattr_delete_file(path, attrnamespace, attrname);
+#elif defined(HAVE_XATTR_ATTR)
+	int flags = 0;
+	char *attrname = strchr(name,'.') + 1;
+
+	if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+	return attr_remove(path, attrname, flags);
+#elif defined(HAVE_ATTROPEN)
+	int ret = -1;
+	int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
+	if (attrdirfd >= 0) {
+		ret = solaris_unlinkat(attrdirfd, name);
+		close(attrdirfd);
+	}
+	return ret;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int rep_fremovexattr (int filedes, const char *name)
+{
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	return fremovexattr(filedes, name);
+#else
+/* So that we do not recursively call this function */
+#undef fremovexattr
+	int options = 0;
+	return fremovexattr(filedes, name, options);
+#endif
+#elif defined(HAVE_XATTR_EA)
+	return fremoveea(filedes, name);
+#elif defined(HAVE_XATTR_EXTATTR)
+	int attrnamespace;
+	const char *attrname;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
+		attrname = name + 7;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_USER;
+		attrname = name + 5;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	return extattr_delete_fd(filedes, attrnamespace, attrname);
+#elif defined(HAVE_XATTR_ATTR)
+	int flags = 0;
+	char *attrname = strchr(name,'.') + 1;
+
+	if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
+
+	return attr_removef(filedes, attrname, flags);
+#elif defined(HAVE_ATTROPEN)
+	int ret = -1;
+	int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
+	if (attrdirfd >= 0) {
+		ret = solaris_unlinkat(attrdirfd, name);
+		close(attrdirfd);
+	}
+	return ret;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int rep_setxattr (const char *path, const char *name, const void *value, size_t size, int flags)
+{
+	int retval = -1;
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	retval = setxattr(path, name, value, size, flags);
+	if (retval < 0) {
+		if (errno == ENOSPC || errno == E2BIG) {
+			errno = ENAMETOOLONG;
+		}
+	}
+	return retval;
+#else
+/* So that we do not recursively call this function */
+#undef setxattr
+	retval = setxattr(path, name, value, size, 0, flags);
+	if (retval < 0) {
+		if (errno == E2BIG) {
+			errno = ENAMETOOLONG;
+		}
+	}
+	return retval;
+#endif
+#elif defined(HAVE_XATTR_EA)
+	if (flags) {
+		retval = getea(path, name, NULL, 0);
+		if (retval < 0) {
+			if (flags & XATTR_REPLACE && errno == ENOATTR) {
+				return -1;
+			}
+		} else {
+			if (flags & XATTR_CREATE) {
+				errno = EEXIST;
+				return -1;
+			}
+		}
+	}
+	retval = setea(path, name, value, size, 0);
+	return retval;
+#elif defined(HAVE_XATTR_EXTATTR)
+	int attrnamespace;
+	const char *attrname;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
+		attrname = name + 7;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_USER;
+		attrname = name + 5;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (flags) {
+		/* Check attribute existence */
+		retval = extattr_get_file(path, attrnamespace, attrname, NULL, 0);
+		if (retval < 0) {
+			/* REPLACE attribute, that doesn't exist */
+			if (flags & XATTR_REPLACE && errno == ENOATTR) {
+				errno = ENOATTR;
+				return -1;
+			}
+			/* Ignore other errors */
+		}
+		else {
+			/* CREATE attribute, that already exists */
+			if (flags & XATTR_CREATE) {
+				errno = EEXIST;
+				return -1;
+			}
+		}
+	}
+	retval = extattr_set_file(path, attrnamespace, attrname, value, size);
+	return (retval < 0) ? -1 : 0;
+#elif defined(HAVE_XATTR_ATTR)
+	int myflags = 0;
+	char *attrname = strchr(name,'.') + 1;
+
+	if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
+	if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
+	if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
+
+	retval = attr_set(path, attrname, (const char *)value, size, myflags);
+	if (retval < 0) {
+		if (errno == E2BIG) {
+			errno = ENAMETOOLONG;
+		}
+	}
+	return retval;
+#elif defined(HAVE_ATTROPEN)
+	int myflags = O_RDWR;
+	int attrfd;
+	if (flags & XATTR_CREATE) myflags |= O_EXCL;
+	if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
+	attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
+	if (attrfd >= 0) {
+		retval = solaris_write_xattr(attrfd, value, size);
+		close(attrfd);
+	}
+	return retval;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int rep_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags)
+{
+	int retval = -1;
+#if defined(HAVE_XATTR_XATTR)
+#ifndef XATTR_ADDITIONAL_OPTIONS
+	retval = fsetxattr(filedes, name, value, size, flags);
+	if (retval < 0) {
+		if (errno == ENOSPC) {
+			errno = ENAMETOOLONG;
+		}
+	}
+	return retval;
+#else
+/* So that we do not recursively call this function */
+#undef fsetxattr
+	retval = fsetxattr(filedes, name, value, size, 0, flags);
+	if (retval < 0) {
+		if (errno == E2BIG) {
+			errno = ENAMETOOLONG;
+		}
+	}
+	return retval;
+#endif
+#elif defined(HAVE_XATTR_EA)
+	if (flags) {
+		retval = fgetea(filedes, name, NULL, 0);
+		if (retval < 0) {
+			if (flags & XATTR_REPLACE && errno == ENOATTR) {
+				return -1;
+			}
+		} else {
+			if (flags & XATTR_CREATE) {
+				errno = EEXIST;
+				return -1;
+			}
+		}
+	}
+	retval = fsetea(filedes, name, value, size, 0);
+	return retval;
+#elif defined(HAVE_XATTR_EXTATTR)
+	int attrnamespace;
+	const char *attrname;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_SYSTEM;
+		attrname = name + 7;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		attrnamespace = EXTATTR_NAMESPACE_USER;
+		attrname = name + 5;
+	} else {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (flags) {
+		/* Check attribute existence */
+		retval = extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0);
+		if (retval < 0) {
+			/* REPLACE attribute, that doesn't exist */
+			if (flags & XATTR_REPLACE && errno == ENOATTR) {
+				errno = ENOATTR;
+				return -1;
+			}
+			/* Ignore other errors */
+		}
+		else {
+			/* CREATE attribute, that already exists */
+			if (flags & XATTR_CREATE) {
+				errno = EEXIST;
+				return -1;
+			}
+		}
+	}
+	retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size);
+	return (retval < 0) ? -1 : 0;
+#elif defined(HAVE_XATTR_ATTR)
+	int myflags = 0;
+	char *attrname = strchr(name,'.') + 1;
+
+	if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
+	if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
+	if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
+
+	return attr_setf(filedes, attrname, (const char *)value, size, myflags);
+#elif defined(HAVE_ATTROPEN)
+	int myflags = O_RDWR | O_XATTR;
+	int attrfd;
+	if (flags & XATTR_CREATE) myflags |= O_EXCL;
+	if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
+	attrfd = solaris_openat(filedes, name, myflags, (mode_t) SOLARIS_ATTRMODE);
+	if (attrfd >= 0) {
+		retval = solaris_write_xattr(attrfd, value, size);
+		close(attrfd);
+	}
+	return retval;
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+/**************************************************************************
+ helper functions for Solaris' EA support
+****************************************************************************/
+#ifdef HAVE_ATTROPEN
+static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size)
+{
+	struct stat sbuf;
+
+	if (fstat(attrfd, &sbuf) == -1) {
+		errno = ENOATTR;
+		return -1;
+	}
+
+	/* This is to return the current size of the named extended attribute */
+	if (size == 0) {
+		return sbuf.st_size;
+	}
+
+	/* check size and read xattr */
+	if (sbuf.st_size > size) {
+		errno = ERANGE;
+		return -1;
+	}
+
+	return read(attrfd, value, sbuf.st_size);
+}
+
+static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size)
+{
+	ssize_t len = 0;
+	DIR *dirp;
+	struct dirent *de;
+	int newfd = dup(attrdirfd);
+	/* CAUTION: The originating file descriptor should not be
+	            used again following the call to fdopendir().
+	            For that reason we dup() the file descriptor
+		    here to make things more clear. */
+	dirp = fdopendir(newfd);
+
+	while ((de = readdir(dirp))) {
+		size_t listlen = strlen(de->d_name) + 1;
+		if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+			/* we don't want "." and ".." here: */
+			continue;
+		}
+
+		if (size == 0) {
+			/* return the current size of the list of extended attribute names*/
+			len += listlen;
+		} else {
+			/* check size and copy entrieѕ + nul into list. */
+			if ((len + listlen) > size) {
+				errno = ERANGE;
+				len = -1;
+				break;
+			} else {
+				strlcpy(list + len, de->d_name, listlen);
+				len += listlen;
+			}
+		}
+	}
+
+	if (closedir(dirp) == -1) {
+		return -1;
+	}
+	return len;
+}
+
+static int solaris_unlinkat(int attrdirfd, const char *name)
+{
+	if (unlinkat(attrdirfd, name, 0) == -1) {
+		if (errno == ENOENT) {
+			errno = ENOATTR;
+		}
+		return -1;
+	}
+	return 0;
+}
+
+static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode)
+{
+	int filedes = attropen(path, attrpath, oflag, mode);
+	if (filedes == -1) {
+		if (errno == EINVAL) {
+			errno = ENOTSUP;
+		} else {
+			errno = ENOATTR;
+		}
+	}
+	return filedes;
+}
+
+static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode)
+{
+	int filedes = openat(fildes, path, oflag, mode);
+	if (filedes == -1) {
+		if (errno == EINVAL) {
+			errno = ENOTSUP;
+		} else {
+			errno = ENOATTR;
+		}
+	}
+	return filedes;
+}
+
+static int solaris_write_xattr(int attrfd, const char *value, size_t size)
+{
+	if ((ftruncate(attrfd, 0) == 0) && (write(attrfd, value, size) == size)) {
+		return 0;
+	} else {
+		return -1;
+	}
+}
+#endif /*HAVE_ATTROPEN*/
+
+