Dmitry V. Levin
ea1970500e
* xlat/kexec_file_load_flags.in: New file. * kexec.c: Include "xlat/kexec_file_load_flags.h". (SYS_FUNC(kexec_file_load)): New function. * linux/dummy.h (sys_kexec_file_load): Remove stub alias. * pathtrace.c (pathtrace_match): Add SEN_kexec_file_load.
103 lines
1.9 KiB
C
103 lines
1.9 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 unsigned long *seg)
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{
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tprints("{");
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printaddr(seg[0]);
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tprintf(", %lu, ", seg[1]);
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printaddr(seg[2]);
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tprintf(", %lu}", seg[3]);
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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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unsigned long seg[4];
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const size_t sizeof_seg = ARRAY_SIZE(seg) * current_wordsize;
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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 (umove_ulong_array_or_printaddr(tcp, addr, seg, ARRAY_SIZE(seg)))
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return;
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tprints("[");
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print_seg(seg);
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for (i = 1; i < len; ++i) {
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tprints(", ");
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if (umove_ulong_array_or_printaddr(tcp,
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addr + i * sizeof_seg,
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seg, ARRAY_SIZE(seg)))
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break;
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print_seg(seg);
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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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#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("%lu, ", tcp->u_arg[2]);
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/* cmdline */
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printstr(tcp, tcp->u_arg[3], tcp->u_arg[2]);
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tprints(", ");
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/* flags */
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printflags(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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