2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 # define MAX_HANDLE_SZ 128
35 unsigned int handle_bytes;
39 SYS_FUNC(name_to_handle_at)
42 const long addr = tcp->u_arg[2];
46 print_dirfd(tcp, tcp->u_arg[0]);
49 printpath(tcp, tcp->u_arg[1]);
53 if (umove_or_printaddr(tcp, addr, &h)) {
57 printaddr(tcp->u_arg[3]);
61 printflags(at_flags, tcp->u_arg[4], "AT_???");
65 tprintf("{handle_bytes=%u", h.handle_bytes);
68 * Abusing tcp->auxstr as a temporary storage.
69 * Will be used and cleared on syscall exit.
71 tcp->auxstr = (void *) (unsigned long) h.handle_bytes;
75 unsigned int i = (unsigned long) tcp->auxstr;
77 if ((!syserror(tcp) || EOVERFLOW == tcp->u_error)
78 && !umove(tcp, addr, &h)) {
79 unsigned char f_handle[MAX_HANDLE_SZ];
81 if (i != h.handle_bytes)
82 tprintf(" => %u", h.handle_bytes);
84 tprintf(", handle_type=%d", h.handle_type);
85 if (h.handle_bytes > MAX_HANDLE_SZ)
86 h.handle_bytes = MAX_HANDLE_SZ;
87 if (!umoven(tcp, addr + sizeof(h), h.handle_bytes,
89 tprints(", f_handle=0x");
90 for (i = 0; i < h.handle_bytes; ++i)
91 tprintf("%02x", f_handle[i]);
99 printnum_int(tcp, tcp->u_arg[3], "%d");
103 printflags(at_flags, tcp->u_arg[4], "AT_???");
108 SYS_FUNC(open_by_handle_at)
110 file_handle_header h;
111 const long addr = tcp->u_arg[1];
114 printfd(tcp, tcp->u_arg[0]);
118 if (!umove_or_printaddr(tcp, addr, &h)) {
119 unsigned char f_handle[MAX_HANDLE_SZ];
121 tprintf("{handle_bytes=%u, handle_type=%d",
122 h.handle_bytes, h.handle_type);
123 if (h.handle_bytes > MAX_HANDLE_SZ)
124 h.handle_bytes = MAX_HANDLE_SZ;
125 if (!umoven(tcp, addr + sizeof(h), h.handle_bytes, &f_handle)) {
128 tprints(", f_handle=0x");
129 for (i = 0; i < h.handle_bytes; ++i)
130 tprintf("%02x", f_handle[i]);
137 tprint_open_modes(tcp->u_arg[2]);