1/*
2 * Copyright (c) 2002-2005 Roland McGrath <roland@redhat.com>
3 * Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
4 * Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "defs.h"
31
32#ifdef HAVE_SYS_XATTR_H
33# include <sys/xattr.h>
34#endif
35
36#include "xlat/xattrflags.h"
37
38static void
39print_xattr_val(struct tcb *tcp,
40		unsigned long addr,
41		unsigned long insize,
42		unsigned long size)
43{
44	char *buf = NULL;
45	unsigned int len;
46
47	tprints(", ");
48
49	if (insize == 0)
50		goto done;
51
52	len = size;
53	if (size != (unsigned long) len)
54		goto done;
55
56	if (!len) {
57		tprintf("\"\", %ld", insize);
58		return;
59	}
60
61	if (!verbose(tcp) || (exiting(tcp) && syserror(tcp)))
62		goto done;
63
64	buf = malloc(len);
65	if (!buf)
66		goto done;
67
68	if (umoven(tcp, addr, len, buf) < 0) {
69		free(buf);
70		buf = NULL;
71		goto done;
72	}
73
74	/* Don't print terminating NUL if there is one. */
75	if (buf[len - 1] == '\0')
76		--len;
77
78done:
79	if (buf) {
80		print_quoted_string(buf, len, 0);
81		free(buf);
82	} else {
83		printaddr(addr);
84	}
85	tprintf(", %ld", insize);
86}
87
88SYS_FUNC(setxattr)
89{
90	printpath(tcp, tcp->u_arg[0]);
91	tprints(", ");
92	printstr(tcp, tcp->u_arg[1], -1);
93	print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
94	tprints(", ");
95	printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
96	return RVAL_DECODED;
97}
98
99SYS_FUNC(fsetxattr)
100{
101	printfd(tcp, tcp->u_arg[0]);
102	tprints(", ");
103	printstr(tcp, tcp->u_arg[1], -1);
104	print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
105	tprints(", ");
106	printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
107	return RVAL_DECODED;
108}
109
110SYS_FUNC(getxattr)
111{
112	if (entering(tcp)) {
113		printpath(tcp, tcp->u_arg[0]);
114		tprints(", ");
115		printstr(tcp, tcp->u_arg[1], -1);
116	} else {
117		print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
118	}
119	return 0;
120}
121
122SYS_FUNC(fgetxattr)
123{
124	if (entering(tcp)) {
125		printfd(tcp, tcp->u_arg[0]);
126		tprints(", ");
127		printstr(tcp, tcp->u_arg[1], -1);
128	} else {
129		print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
130	}
131	return 0;
132}
133
134static void
135print_xattr_list(struct tcb *tcp, unsigned long addr, unsigned long size)
136{
137	if (syserror(tcp)) {
138		printaddr(addr);
139	} else {
140		unsigned long len =
141			(size < (unsigned long) tcp->u_rval) ?
142				size : (unsigned long) tcp->u_rval;
143		printstr(tcp, addr, len);
144	}
145	tprintf(", %lu", size);
146}
147
148SYS_FUNC(listxattr)
149{
150	if (entering(tcp)) {
151		printpath(tcp, tcp->u_arg[0]);
152		tprints(", ");
153	} else {
154		print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
155	}
156	return 0;
157}
158
159SYS_FUNC(flistxattr)
160{
161	if (entering(tcp)) {
162		printfd(tcp, tcp->u_arg[0]);
163		tprints(", ");
164	} else {
165		print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
166	}
167	return 0;
168}
169
170SYS_FUNC(removexattr)
171{
172	printpath(tcp, tcp->u_arg[0]);
173	tprints(", ");
174	printstr(tcp, tcp->u_arg[1], -1);
175	return RVAL_DECODED;
176}
177
178SYS_FUNC(fremovexattr)
179{
180	printfd(tcp, tcp->u_arg[0]);
181	tprints(", ");
182	printstr(tcp, tcp->u_arg[1], -1);
183	return RVAL_DECODED;
184}
185