X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fcommon%2Fxattr.c;fp=src%2Fceph%2Fsrc%2Fcommon%2Fxattr.c;h=080bebcaafd81497867ab6113f3aeeb09f11c656;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/common/xattr.c b/src/ceph/src/common/xattr.c
new file mode 100644
index 0000000..080bebc
--- /dev/null
+++ b/src/ceph/src/common/xattr.c
@@ -0,0 +1,277 @@
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 Stanislav Sedov <stas@FreeBSD.org>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ */
+
+#if defined(__FreeBSD__)
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <sys/types.h>
+#include <sys/extattr.h>
+#elif defined(__linux__)
+#include <sys/types.h>
+#include <sys/xattr.h>
+#elif defined(DARWIN)
+#include <sys/xattr.h>
+#else
+#error "Your system is not supported!"
+#endif
+
+#include "common/xattr.h"
+
+/*
+ * Sets extended attribute on a file.
+ * Returns 0 on success, -1 on failure.
+ */
+int
+ceph_os_setxattr(const char *path, const char *name,
+    const void *value, size_t size)
+{
+	int error = -1;
+
+#if defined(__FreeBSD__)
+	error = extattr_set_file(path, EXTATTR_NAMESPACE_USER, name, value,
+	    size);
+	if (error > 0)
+		error = 0;
+#elif defined(__linux__) 
+	error = setxattr(path, name, value, size, 0);
+#elif defined(DARWIN)
+	error = setxattr(path, name, value, size, 0 /* position */, 0);
+#endif
+
+	return (error);
+}
+
+int
+ceph_os_fsetxattr(int fd, const char *name, const void *value,
+    size_t size)
+{
+	int error = -1;
+
+#if defined(__FreeBSD__)
+	error = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER, name, value, size);
+	if (error > 0)
+		error = 0;
+#elif defined(__linux__)
+	error = fsetxattr(fd, name, value, size, 0);
+#elif defined(DARWIN)
+	error = fsetxattr(fd, name, value, size, 0, 0 /* no options should be indentical to Linux */ );
+#endif
+
+	return (error);
+}
+
+ssize_t
+ceph_os_getxattr(const char *path, const char *name,
+void *value, size_t size)
+{
+	ssize_t error = -1;
+
+#if defined(__FreeBSD__)
+	if (value == NULL || size == 0) {
+		error = extattr_get_file(path, EXTATTR_NAMESPACE_USER, name, value,
+		    size);
+	} else {
+		error = extattr_get_file(path, EXTATTR_NAMESPACE_USER, name, NULL,
+		    0);
+		if (error > 0) {
+			if (error > size) {
+				errno = ERANGE;
+				error = -1;
+			} else  {
+				error = extattr_get_file(path, EXTATTR_NAMESPACE_USER,
+				    name, value, size);
+			}
+		}
+	}
+#elif defined(__linux__)
+	error = getxattr(path, name, value, size);
+#elif defined(DARWIN)
+	error = getxattr(path, name, value, size, 0 /* position  */, 0);
+	/* ENOATTR and ENODATA have different values */
+	if (error < 0 && errno == ENOATTR)
+		errno = ENODATA;
+#endif
+
+	return (error);
+}
+
+ssize_t
+ceph_os_fgetxattr(int fd, const char *name, void *value,
+    size_t size)
+{
+	ssize_t error = -1;
+
+#if defined(__FreeBSD__)
+	if (value == NULL || size == 0) {
+		error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, value,
+		    size);
+	} else {
+		error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, NULL,
+		    0);
+		if (error > 0) {
+			if (error > size) {
+				errno = ERANGE;
+				error = -1;
+			} else  {
+				error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER,
+				    name, value, size);
+			}
+		}
+	}
+#elif defined(__linux__)
+	error = fgetxattr(fd, name, value, size);
+#elif defined(DARWIN)
+	error = fgetxattr(fd, name, value, size, 0, 0 /* no options */);
+	/* ENOATTR and ENODATA have different values */
+	if (error < 0 && errno == ENOATTR)
+		errno = ENODATA;
+#endif
+
+	return (error);
+}
+
+ssize_t
+ceph_os_listxattr(const char *path, char *list, size_t size)
+{
+	ssize_t error = -1;
+
+#if defined(__FreeBSD__)
+	/*
+	 * XXX. The format of the list FreeBSD returns differs
+	 * from the Linux ones.  We have to perform the conversion. :-(
+	 */
+	char *newlist, *p, *p1;
+
+	if (size != 0) {
+		newlist = malloc(size);
+		if (newlist != NULL) {
+			error = extattr_list_file(path, EXTATTR_NAMESPACE_USER,
+			    newlist, size);
+			if (error > 0) {
+				p = newlist;
+				p1 = list;
+				while ((p - newlist) < error) {
+					uint8_t len = *(uint8_t *)p;
+					p++;
+					if ((p + len - newlist) > error)
+						break;
+					if (len > 0) {
+						bcopy(p, p1, len);
+						p += len;
+						p1 += len;
+						*p1++ = '\0';
+					}
+				}
+				error = p1 - list;
+			}
+			free(newlist);
+		}
+	} else {
+		error = extattr_list_file(path, EXTATTR_NAMESPACE_USER,
+		    list, size);
+	}
+#elif defined(__linux__)
+	error = listxattr(path, list, size);
+#elif defined(DARWIN)
+	error = listxattr(path, list, size, 0);
+#endif
+
+	return (error);
+}
+
+ssize_t
+ceph_os_flistxattr(int fd, char *list, size_t size)
+{
+	ssize_t error = -1;
+
+#if defined(__FreeBSD__)
+	/*
+	 * XXX. The format of the list FreeBSD returns differs
+	 * from the Linux ones.  We have to perform the conversion. :-(
+	 */
+	char *newlist, *p, *p1;
+
+	if (size != 0) {
+		newlist = malloc(size);
+		if (newlist != NULL) {
+			error = extattr_list_fd(fd, EXTATTR_NAMESPACE_USER,
+			    newlist, size);
+			if (error > 0) {
+				p = newlist;
+				p1 = list;
+				while ((p - newlist) < error) {
+					uint8_t len = *(uint8_t *)p;
+					p++;
+					if ((p + len - newlist) > error)
+						break;
+					if (len > 0) {
+						bcopy(p, p1, len);
+						p += len;
+						p1 += len;
+						*p1++ = '\0';
+					}
+				}
+				error = p1 - list;
+			}
+			free(newlist);
+		}
+	} else {
+		error = extattr_list_fd(fd, EXTATTR_NAMESPACE_USER,
+		    list, size);
+	}
+#elif defined(__linux__)
+	error = flistxattr(fd, list, size);
+#elif defined(DARWIN)
+	error = flistxattr(fd, list, size, 0);
+#endif
+
+	return (error);
+}
+
+int
+ceph_os_removexattr(const char *path, const char *name)
+{
+	int error = -1;
+
+#if defined(__FreeBSD__)
+	error = extattr_delete_file(path, EXTATTR_NAMESPACE_USER, name);
+#elif defined(__linux__)
+	error = removexattr(path, name);
+#elif defined(DARWIN)
+	error = removexattr(path, name, 0);
+	/* ENOATTR and ENODATA have different values */
+	if (error < 0 && errno == ENOATTR)
+		errno = ENODATA;
+#endif
+
+	return (error);
+}
+
+int
+ceph_os_fremovexattr(int fd, const char *name)
+{
+	int error = -1;
+
+#if defined(__FreeBSD__)
+	error = extattr_delete_fd(fd, EXTATTR_NAMESPACE_USER, name);
+#elif defined(__linux__)
+	error = fremovexattr(fd, name);
+#elif defined(DARWIN)
+	error = fremovexattr(fd, name, 0);
+	/* ENOATTR and ENODATA have different values */
+	if (error < 0 && errno == ENOATTR)
+		errno = ENODATA;
+#endif
+
+	return (error);
+}