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123 lines
3.5 KiB
123 lines
3.5 KiB
/* |
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* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2014-2018 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/kexec_load_flags.h" |
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#include "xlat/kexec_arch_values.h" |
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#ifndef KEXEC_ARCH_MASK |
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# define KEXEC_ARCH_MASK 0xffff0000 |
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#endif |
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#ifndef KEXEC_SEGMENT_MAX |
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# define KEXEC_SEGMENT_MAX 16 |
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#endif |
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static bool |
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print_seg(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data) |
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{ |
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const kernel_ulong_t *seg; |
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kernel_ulong_t seg_buf[4]; |
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if (elem_size < sizeof(seg_buf)) { |
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unsigned int i; |
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for (i = 0; i < ARRAY_SIZE(seg_buf); ++i) |
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seg_buf[i] = ((unsigned int *) elem_buf)[i]; |
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seg = seg_buf; |
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} else { |
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seg = elem_buf; |
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} |
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tprints("{buf="); |
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printaddr(seg[0]); |
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tprintf(", bufsz=%" PRI_klu ", mem=", seg[1]); |
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printaddr(seg[2]); |
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tprintf(", memsz=%" PRI_klu "}", seg[3]); |
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return true; |
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} |
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static void |
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print_kexec_segments(struct tcb *const tcp, const kernel_ulong_t addr, |
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const kernel_ulong_t len) |
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{ |
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if (len > KEXEC_SEGMENT_MAX) { |
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printaddr(addr); |
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return; |
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} |
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kernel_ulong_t seg[4]; |
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const size_t sizeof_seg = ARRAY_SIZE(seg) * current_wordsize; |
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print_array(tcp, addr, len, seg, sizeof_seg, |
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tfetch_mem, print_seg, 0); |
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} |
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SYS_FUNC(kexec_load) |
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{ |
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/* entry, nr_segments */ |
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printaddr(tcp->u_arg[0]); |
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tprintf(", %" PRI_klu ", ", tcp->u_arg[1]); |
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/* segments */ |
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print_kexec_segments(tcp, tcp->u_arg[2], tcp->u_arg[1]); |
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tprints(", "); |
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/* flags */ |
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kernel_ulong_t n = tcp->u_arg[3]; |
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printxval64(kexec_arch_values, n & KEXEC_ARCH_MASK, "KEXEC_ARCH_???"); |
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n &= ~(kernel_ulong_t) KEXEC_ARCH_MASK; |
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if (n) { |
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tprints("|"); |
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printflags64(kexec_load_flags, n, "KEXEC_???"); |
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} |
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return RVAL_DECODED; |
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} |
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#include "xlat/kexec_file_load_flags.h" |
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SYS_FUNC(kexec_file_load) |
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{ |
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/* kernel_fd */ |
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printfd(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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/* initrd_fd */ |
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printfd(tcp, tcp->u_arg[1]); |
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tprints(", "); |
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/* cmdline_len */ |
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tprintf("%" PRI_klu ", ", tcp->u_arg[2]); |
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/* cmdline */ |
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printstrn(tcp, tcp->u_arg[3], tcp->u_arg[2]); |
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tprints(", "); |
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/* flags */ |
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printflags64(kexec_file_load_flags, tcp->u_arg[4], "KEXEC_FILE_???"); |
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return RVAL_DECODED; |
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}
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