91 lines
2.0 KiB
C
91 lines
2.0 KiB
C
#include "defs.h"
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#include <linux/kexec.h>
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#include "xlat/kexec_arch_values.h"
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#include "xlat/kexec_flags.h"
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static void
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print_kexec_segments(struct tcb *tcp, unsigned long addr, unsigned long len)
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{
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#if SUPPORTED_PERSONALITIES > 1
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union {
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struct { u_int32_t buf, bufsz, mem, memsz; } seg32;
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struct { u_int64_t buf, bufsz, mem, memsz; } seg64;
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} seg;
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# define sizeof_seg \
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(current_wordsize == 4 ? sizeof(seg.seg32) : sizeof(seg.seg64))
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# define seg_buf \
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(current_wordsize == 4 ? (uint64_t) seg.seg32.buf : seg.seg64.buf)
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# define seg_bufsz \
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(current_wordsize == 4 ? (uint64_t) seg.seg32.bufsz : seg.seg64.bufsz)
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# define seg_mem \
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(current_wordsize == 4 ? (uint64_t) seg.seg32.mem : seg.seg64.mem)
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# define seg_memsz \
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(current_wordsize == 4 ? (uint64_t) seg.seg32.memsz : seg.seg64.memsz)
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#else
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struct kexec_segment seg;
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# define sizeof_seg sizeof(seg)
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# define seg_buf seg.buf
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# define seg_bufsz seg.bufsz
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# define seg_mem seg.mem
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# define seg_memsz seg.memsz
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#endif
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unsigned int i, failed;
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if (!len) {
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tprints("[]");
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return;
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}
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if (len > KEXEC_SEGMENT_MAX) {
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tprintf("%#lx", addr);
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return;
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}
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failed = 0;
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tprints("[");
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for (i = 0; i < len; ++i) {
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if (i)
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tprints(", ");
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if (umoven(tcp, addr + i * sizeof_seg, sizeof_seg,
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(char *) &seg) < 0) {
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tprints("?");
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failed = 1;
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break;
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}
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tprintf("{%#lx, %lu, %#lx, %lu}",
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(long) seg_buf, (unsigned long) seg_bufsz,
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(long) seg_mem, (unsigned long) seg_memsz);
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}
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tprints("]");
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if (failed)
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tprintf(" %#lx", addr);
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}
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int
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sys_kexec_load(struct tcb *tcp)
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{
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unsigned long n;
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if (exiting(tcp))
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return 0;
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/* entry, nr_segments */
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tprintf("%#lx, %lu, ", tcp->u_arg[0], 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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n = tcp->u_arg[3];
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printxval(kexec_arch_values, n & KEXEC_ARCH_MASK, "KEXEC_ARCH_???");
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n &= ~KEXEC_ARCH_MASK;
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if (n) {
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tprints("|");
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printflags(kexec_flags, n, "KEXEC_???");
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}
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return 0;
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}
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