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139 lines
3.8 KiB
139 lines
3.8 KiB
/* |
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2015-2017 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "defs.h" |
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#include "xlat/name_to_handle_at_flags.h" |
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#ifndef MAX_HANDLE_SZ |
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# define MAX_HANDLE_SZ 128 |
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#endif |
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typedef struct { |
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unsigned int handle_bytes; |
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int handle_type; |
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} file_handle_header; |
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SYS_FUNC(name_to_handle_at) |
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{ |
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file_handle_header h; |
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const kernel_ulong_t addr = tcp->u_arg[2]; |
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if (entering(tcp)) { |
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/* dirfd */ |
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print_dirfd(tcp, tcp->u_arg[0]); |
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/* pathname */ |
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printpath(tcp, tcp->u_arg[1]); |
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tprints(", "); |
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/* handle */ |
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if (umove_or_printaddr(tcp, addr, &h)) { |
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tprints(", "); |
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/* mount_id */ |
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printaddr(tcp->u_arg[3]); |
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tprints(", "); |
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/* flags */ |
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printflags(name_to_handle_at_flags, tcp->u_arg[4], |
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"AT_???"); |
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return RVAL_DECODED; |
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} |
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tprintf("{handle_bytes=%u", h.handle_bytes); |
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set_tcb_priv_ulong(tcp, h.handle_bytes); |
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return 0; |
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} else { |
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unsigned int i = get_tcb_priv_ulong(tcp); |
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if ((!syserror(tcp) || EOVERFLOW == tcp->u_error) |
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&& !umove(tcp, addr, &h)) { |
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unsigned char f_handle[MAX_HANDLE_SZ]; |
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if (i != h.handle_bytes) |
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tprintf(" => %u", h.handle_bytes); |
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if (!syserror(tcp)) { |
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tprintf(", handle_type=%d", h.handle_type); |
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if (h.handle_bytes > MAX_HANDLE_SZ) |
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h.handle_bytes = MAX_HANDLE_SZ; |
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if (!umoven(tcp, addr + sizeof(h), h.handle_bytes, |
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f_handle)) { |
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tprints(", f_handle=0x"); |
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for (i = 0; i < h.handle_bytes; ++i) |
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tprintf("%02x", f_handle[i]); |
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} |
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} |
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} |
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tprints("}, "); |
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/* mount_id */ |
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printnum_int(tcp, tcp->u_arg[3], "%d"); |
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tprints(", "); |
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/* flags */ |
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printflags(name_to_handle_at_flags, tcp->u_arg[4], "AT_???"); |
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} |
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return 0; |
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} |
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SYS_FUNC(open_by_handle_at) |
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{ |
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file_handle_header h; |
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const kernel_ulong_t addr = tcp->u_arg[1]; |
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/* mount_fd */ |
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printfd(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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/* handle */ |
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if (!umove_or_printaddr(tcp, addr, &h)) { |
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unsigned char f_handle[MAX_HANDLE_SZ]; |
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tprintf("{handle_bytes=%u, handle_type=%d", |
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h.handle_bytes, h.handle_type); |
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if (h.handle_bytes > MAX_HANDLE_SZ) |
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h.handle_bytes = MAX_HANDLE_SZ; |
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if (!umoven(tcp, addr + sizeof(h), h.handle_bytes, &f_handle)) { |
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unsigned int i; |
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tprints(", f_handle=0x"); |
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for (i = 0; i < h.handle_bytes; ++i) |
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tprintf("%02x", f_handle[i]); |
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} |
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tprints("}"); |
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} |
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tprints(", "); |
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/* flags */ |
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tprint_open_modes(tcp->u_arg[2]); |
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return RVAL_DECODED; |
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}
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