+/*
+ * Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include "defs.h"
#include "xlat/kexec_load_flags.h"
# define KEXEC_SEGMENT_MAX 16
#endif
-static void
-print_kexec_segments(struct tcb *tcp, unsigned long addr, unsigned long len)
+static bool
+print_seg(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
{
-#if SUPPORTED_PERSONALITIES > 1
- union {
- struct { u_int32_t buf, bufsz, mem, memsz; } seg32;
- struct { u_int64_t buf, bufsz, mem, memsz; } seg64;
- } seg;
-# define sizeof_seg \
- (current_wordsize == 4 ? sizeof(seg.seg32) : sizeof(seg.seg64))
-# define seg_buf \
- (current_wordsize == 4 ? (uint64_t) seg.seg32.buf : seg.seg64.buf)
-# define seg_bufsz \
- (current_wordsize == 4 ? (uint64_t) seg.seg32.bufsz : seg.seg64.bufsz)
-# define seg_mem \
- (current_wordsize == 4 ? (uint64_t) seg.seg32.mem : seg.seg64.mem)
-# define seg_memsz \
- (current_wordsize == 4 ? (uint64_t) seg.seg32.memsz : seg.seg64.memsz)
-#else
- struct {
- void *buf;
- size_t bufsz;
- void *mem;
- size_t memsz;
- } seg;
-# define sizeof_seg sizeof(seg)
-# define seg_buf seg.buf
-# define seg_bufsz seg.bufsz
-# define seg_mem seg.mem
-# define seg_memsz seg.memsz
-#endif
- unsigned int i, failed;
+ const unsigned long *seg;
+ unsigned long seg_buf[4];
- if (!len) {
- tprints("[]");
- return;
+ if (elem_size < sizeof(seg_buf)) {
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(seg_buf); ++i)
+ seg_buf[i] = ((unsigned int *) elem_buf)[i];
+ seg = seg_buf;
+ } else {
+ seg = elem_buf;
}
+ tprints("{buf=");
+ printaddr(seg[0]);
+ tprintf(", bufsz=%lu, mem=", seg[1]);
+ printaddr(seg[2]);
+ tprintf(", memsz=%lu}", seg[3]);
+
+ return true;
+}
+
+static void
+print_kexec_segments(struct tcb *tcp, const unsigned long addr,
+ const unsigned long len)
+{
if (len > KEXEC_SEGMENT_MAX) {
- tprintf("%#lx", addr);
+ printaddr(addr);
return;
}
- failed = 0;
- tprints("[");
- for (i = 0; i < len; ++i) {
- if (i)
- tprints(", ");
- if (umoven(tcp, addr + i * sizeof_seg, sizeof_seg, &seg) < 0) {
- tprints("?");
- failed = 1;
- break;
- }
- tprintf("{%#lx, %lu, %#lx, %lu}",
- (long) seg_buf, (unsigned long) seg_bufsz,
- (long) seg_mem, (unsigned long) seg_memsz);
- }
- tprints("]");
- if (failed)
- tprintf(" %#lx", addr);
+ unsigned long seg[4];
+ const size_t sizeof_seg = ARRAY_SIZE(seg) * current_wordsize;
+
+ print_array(tcp, addr, len, seg, sizeof_seg,
+ umoven_or_printaddr, print_seg, 0);
}
SYS_FUNC(kexec_load)
{
- unsigned long n;
-
- if (exiting(tcp))
- return 0;
-
/* entry, nr_segments */
- tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
+ printaddr(widen_to_ulong(tcp->u_arg[0]));
+ tprintf(", %lu, ", widen_to_ulong(tcp->u_arg[1]));
/* segments */
- print_kexec_segments(tcp, tcp->u_arg[2], tcp->u_arg[1]);
+ print_kexec_segments(tcp, widen_to_ulong(tcp->u_arg[2]),
+ widen_to_ulong(tcp->u_arg[1]));
tprints(", ");
/* flags */
- n = tcp->u_arg[3];
- printxval(kexec_arch_values, n & KEXEC_ARCH_MASK, "KEXEC_ARCH_???");
- n &= ~KEXEC_ARCH_MASK;
+ unsigned long n = widen_to_ulong(tcp->u_arg[3]);
+ printxval_long(kexec_arch_values, n & KEXEC_ARCH_MASK, "KEXEC_ARCH_???");
+ n &= ~(unsigned long) KEXEC_ARCH_MASK;
if (n) {
tprints("|");
- printflags(kexec_load_flags, n, "KEXEC_???");
+ printflags_long(kexec_load_flags, n, "KEXEC_???");
}
- return 0;
+ return RVAL_DECODED;
+}
+
+#include "xlat/kexec_file_load_flags.h"
+
+SYS_FUNC(kexec_file_load)
+{
+ /* kernel_fd */
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ /* initrd_fd */
+ printfd(tcp, tcp->u_arg[1]);
+ tprints(", ");
+ /* cmdline_len */
+ tprintf("%lu, ", tcp->u_arg[2]);
+ /* cmdline */
+ printstr(tcp, tcp->u_arg[3], tcp->u_arg[2]);
+ tprints(", ");
+ /* flags */
+ printflags_long(kexec_file_load_flags, tcp->u_arg[4], "KEXEC_FILE_???");
+
+ return RVAL_DECODED;
}
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