+/*
+ * Copyright (c) 2002-2005 Roland McGrath <roland@redhat.com>
+ * Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
+ * Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include "defs.h"
-#ifdef HAVE_LINUX_XATTR_H
-# include <linux/xattr.h>
-#else
-# define XATTR_CREATE 1
-# define XATTR_REPLACE 2
+#ifdef HAVE_SYS_XATTR_H
+# include <sys/xattr.h>
#endif
#include "xlat/xattrflags.h"
+#ifndef XATTR_SIZE_MAX
+# define XATTR_SIZE_MAX 65536
+#endif
+
static void
-print_xattr_val(struct tcb *tcp, int failed,
- unsigned long arg,
- unsigned long insize,
- unsigned long size)
+print_xattr_val(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const kernel_ulong_t insize,
+ const kernel_ulong_t size)
{
- if (insize == 0)
- failed = 1;
- if (!failed) {
- unsigned long capacity = 4 * size + 1;
- unsigned char *buf = (capacity < size) ? NULL : malloc(capacity);
- if (buf == NULL || /* probably a bogus size argument */
- umoven(tcp, arg, size, (char *) &buf[3 * size]) < 0) {
- failed = 1;
- }
- else {
- unsigned char *out = buf;
- unsigned char *in = &buf[3 * size];
- size_t i;
- for (i = 0; i < size; ++i) {
- if (in[i] >= ' ' && in[i] <= 0x7e)
- *out++ = in[i];
- else {
-#define tohex(n) "0123456789abcdef"[n]
- *out++ = '\\';
- *out++ = 'x';
- *out++ = tohex(in[i] / 16);
- *out++ = tohex(in[i] % 16);
- }
- }
- /* Don't print terminating NUL if there is one. */
- if (i > 0 && in[i - 1] == '\0')
- out -= 4;
- *out = '\0';
- tprintf(", \"%s\", %ld", buf, insize);
- }
- free(buf);
- }
- if (failed)
- tprintf(", 0x%lx, %ld", arg, insize);
+ tprints(", ");
+
+ if (size > XATTR_SIZE_MAX)
+ printaddr(addr);
+ else
+ printstr_ex(tcp, addr, size, QUOTE_OMIT_TRAILING_0);
+ tprintf(", %" PRI_klu, insize);
}
-int
-sys_setxattr(struct tcb *tcp)
+SYS_FUNC(setxattr)
{
- if (entering(tcp)) {
- printpath(tcp, tcp->u_arg[0]);
- tprints(", ");
- printstr(tcp, tcp->u_arg[1], -1);
- print_xattr_val(tcp, 0, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
- tprints(", ");
- printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
- }
- return 0;
+ printpath(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printstr(tcp, tcp->u_arg[1]);
+ print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
+ tprints(", ");
+ printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
+ return RVAL_DECODED;
}
-int
-sys_fsetxattr(struct tcb *tcp)
+SYS_FUNC(fsetxattr)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printstr(tcp, tcp->u_arg[1], -1);
- print_xattr_val(tcp, 0, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
- tprints(", ");
- printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
- }
- return 0;
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printstr(tcp, tcp->u_arg[1]);
+ print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
+ tprints(", ");
+ printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
+ return RVAL_DECODED;
}
-int
-sys_getxattr(struct tcb *tcp)
+SYS_FUNC(getxattr)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
- printstr(tcp, tcp->u_arg[1], -1);
+ printstr(tcp, tcp->u_arg[1]);
} else {
- print_xattr_val(tcp, syserror(tcp), tcp->u_arg[2], tcp->u_arg[3],
- tcp->u_rval);
+ print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
}
return 0;
}
-int
-sys_fgetxattr(struct tcb *tcp)
+SYS_FUNC(fgetxattr)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
- printstr(tcp, tcp->u_arg[1], -1);
+ printstr(tcp, tcp->u_arg[1]);
} else {
- print_xattr_val(tcp, syserror(tcp), tcp->u_arg[2], tcp->u_arg[3],
- tcp->u_rval);
+ print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
}
return 0;
}
static void
-print_xattr_list(struct tcb *tcp, unsigned long addr, unsigned long size)
+print_xattr_list(struct tcb *const tcp, const kernel_ulong_t addr,
+ const kernel_ulong_t size)
{
- if (syserror(tcp)) {
- tprintf("%#lx", addr);
+ if (!size || syserror(tcp)) {
+ printaddr(addr);
} else {
- if (!addr) {
- tprints("NULL");
- } else {
- unsigned long len =
- (size < (unsigned long) tcp->u_rval) ?
- size : (unsigned long) tcp->u_rval;
- printstr(tcp, addr, len);
- }
+ printstrn(tcp, addr, tcp->u_rval);
}
- tprintf(", %lu", size);
+ tprintf(", %" PRI_klu, size);
}
-int
-sys_listxattr(struct tcb *tcp)
+SYS_FUNC(listxattr)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
return 0;
}
-int
-sys_flistxattr(struct tcb *tcp)
+SYS_FUNC(flistxattr)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
return 0;
}
-int
-sys_removexattr(struct tcb *tcp)
+SYS_FUNC(removexattr)
{
- if (entering(tcp)) {
- printpath(tcp, tcp->u_arg[0]);
- tprints(", ");
- printstr(tcp, tcp->u_arg[1], -1);
- }
- return 0;
+ printpath(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printstr(tcp, tcp->u_arg[1]);
+ return RVAL_DECODED;
}
-int
-sys_fremovexattr(struct tcb *tcp)
+SYS_FUNC(fremovexattr)
{
- if (entering(tcp)) {
- printfd(tcp, tcp->u_arg[0]);
- tprints(", ");
- printstr(tcp, tcp->u_arg[1], -1);
- }
- return 0;
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printstr(tcp, tcp->u_arg[1]);
+ return RVAL_DECODED;
}
projects / strace / blobdiff