Dmitry V. Levin
2f444dc871
* kexec.c (print_seg): New function. (print_kexec_segments): Use it. Use printaddr and umove_or_printaddr. (kexec_load): Use printaddr. Update for RVAL_DECODED.
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
#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 void
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print_seg(const long seg_buf, const unsigned long seg_bufsz,
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const long seg_mem, const unsigned long seg_memsz)
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{
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tprints("{");
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printaddr(seg_buf);
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tprintf(", %lu, ", seg_bufsz);
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printaddr(seg_mem);
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tprintf(", %lu}", seg_memsz);
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}
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static void
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print_kexec_segments(struct tcb *tcp, const unsigned long addr,
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const 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 {
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void *buf;
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size_t bufsz;
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void *mem;
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size_t memsz;
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} 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;
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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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printaddr(addr);
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return;
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}
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if (umoven_or_printaddr(tcp, addr, sizeof_seg, &seg))
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return;
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tprints("[");
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print_seg((unsigned long) seg_buf, seg_bufsz,
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(unsigned long) seg_mem, seg_memsz);
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for (i = 1; i < len; ++i) {
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tprints(", ");
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if (umoven_or_printaddr(tcp, addr + i * sizeof_seg,
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sizeof_seg, &seg))
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break;
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print_seg((unsigned long) seg_buf, seg_bufsz,
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(unsigned long) seg_mem, seg_memsz);
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}
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tprints("]");
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}
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SYS_FUNC(kexec_load)
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{
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unsigned long n;
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/* entry, nr_segments */
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printaddr(tcp->u_arg[0]);
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tprintf(", %lu, ", 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_load_flags, n, "KEXEC_???");
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}
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return RVAL_DECODED;
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}
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