+/*
+ * Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
+ * Copyright (c) 2005 Roland McGrath <roland@redhat.com>
+ * Copyright (c) 2012-2015 Dmitry V. Levin <ldv@altlinux.org>
+ * Copyright (c) 2014-2017 The strace developers.
+ * 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 <sched.h>
+#include "sched_attr.h"
#include "xlat/schedulers.h"
+#include "xlat/sched_flags.h"
SYS_FUNC(sched_getscheduler)
{
if (entering(tcp)) {
tprintf("%d", (int) tcp->u_arg[0]);
} else if (!syserror(tcp)) {
- tcp->auxstr = xlookup(schedulers, tcp->u_rval);
+ tcp->auxstr = xlookup(schedulers, (kernel_ulong_t) tcp->u_rval);
if (tcp->auxstr != NULL)
return RVAL_STR;
}
SYS_FUNC(sched_setscheduler)
{
- if (entering(tcp)) {
- struct sched_param p;
+ tprintf("%d, ", (int) tcp->u_arg[0]);
+ printxval(schedulers, tcp->u_arg[1], "SCHED_???");
+ tprints(", ");
+ printnum_int(tcp, tcp->u_arg[2], "%d");
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(sched_getparam)
+{
+ if (entering(tcp))
tprintf("%d, ", (int) tcp->u_arg[0]);
- printxval(schedulers, tcp->u_arg[1], "SCHED_???");
- if (umove(tcp, tcp->u_arg[2], &p) < 0)
- tprintf(", %#lx", tcp->u_arg[2]);
- else
- tprintf(", { %d }", p.sched_priority);
- }
+ else
+ printnum_int(tcp, tcp->u_arg[1], "%d");
return 0;
}
-SYS_FUNC(sched_getparam)
+SYS_FUNC(sched_setparam)
+{
+ tprintf("%d, ", (int) tcp->u_arg[0]);
+ printnum_int(tcp, tcp->u_arg[1], "%d");
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(sched_get_priority_min)
+{
+ printxval(schedulers, tcp->u_arg[0], "SCHED_???");
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(sched_rr_get_interval)
{
if (entering(tcp)) {
tprintf("%d, ", (int) tcp->u_arg[0]);
} else {
- struct sched_param p;
- if (umove(tcp, tcp->u_arg[1], &p) < 0)
- tprintf("%#lx", tcp->u_arg[1]);
+ if (syserror(tcp))
+ printaddr(tcp->u_arg[1]);
else
- tprintf("{ %d }", p.sched_priority);
+ print_timespec(tcp, tcp->u_arg[1]);
}
return 0;
}
-SYS_FUNC(sched_setparam)
+static void
+print_sched_attr(struct tcb *const tcp, const kernel_ulong_t addr,
+ unsigned int usize)
{
- if (entering(tcp)) {
- struct sched_param p;
- if (umove(tcp, tcp->u_arg[1], &p) < 0)
- tprintf("%d, %#lx", (int) tcp->u_arg[0], tcp->u_arg[1]);
- else
- tprintf("%d, { %d }", (int) tcp->u_arg[0], p.sched_priority);
+ struct sched_attr attr = {};
+ unsigned int size;
+
+ if (usize) {
+ /* called from sched_getattr */
+ size = usize <= sizeof(attr) ? usize : (unsigned) sizeof(attr);
+ if (umoven_or_printaddr(tcp, addr, size, &attr))
+ return;
+ /* the number of bytes written by the kernel */
+ size = attr.size;
+ } else {
+ /* called from sched_setattr */
+ if (umove_or_printaddr(tcp, addr, &attr.size))
+ return;
+ usize = attr.size;
+ if (!usize)
+ usize = SCHED_ATTR_MIN_SIZE;
+ size = usize <= sizeof(attr) ? usize : (unsigned) sizeof(attr);
+ if (size >= SCHED_ATTR_MIN_SIZE) {
+ if (umoven_or_printaddr(tcp, addr, size, &attr))
+ return;
+ }
}
- return 0;
+
+ tprintf("{size=%u", attr.size);
+
+ if (size >= SCHED_ATTR_MIN_SIZE) {
+ tprints(", sched_policy=");
+ printxval(schedulers, attr.sched_policy, "SCHED_???");
+ tprints(", sched_flags=");
+ printflags64(sched_flags, attr.sched_flags, "SCHED_FLAG_???");
+
+#define PRINT_SCHED_FIELD(field, fmt) \
+ tprintf(", " #field "=%" fmt, attr.field)
+
+ PRINT_SCHED_FIELD(sched_nice, "d");
+ PRINT_SCHED_FIELD(sched_priority, "u");
+ PRINT_SCHED_FIELD(sched_runtime, PRIu64);
+ PRINT_SCHED_FIELD(sched_deadline, PRIu64);
+ PRINT_SCHED_FIELD(sched_period, PRIu64);
+
+ if (usize > size)
+ tprints(", ...");
+ }
+
+ tprints("}");
}
-SYS_FUNC(sched_get_priority_min)
+SYS_FUNC(sched_setattr)
{
if (entering(tcp)) {
- printxval(schedulers, tcp->u_arg[0], "SCHED_???");
+ tprintf("%d, ", (int) tcp->u_arg[0]);
+ print_sched_attr(tcp, tcp->u_arg[1], 0);
+ } else {
+ struct sched_attr attr;
+
+ if (verbose(tcp) && tcp->u_error == E2BIG
+ && umove(tcp, tcp->u_arg[1], &attr.size) == 0) {
+ tprintf(" => {size=%u}", attr.size);
+ }
+
+ tprintf(", %u", (unsigned int) tcp->u_arg[2]);
}
+
return 0;
}
-SYS_FUNC(sched_rr_get_interval)
+SYS_FUNC(sched_getattr)
{
if (entering(tcp)) {
- tprintf("%ld, ", (long) (pid_t) tcp->u_arg[0]);
+ tprintf("%d, ", (int) tcp->u_arg[0]);
} else {
- if (syserror(tcp))
- tprintf("%#lx", tcp->u_arg[1]);
+ const unsigned int size = tcp->u_arg[2];
+
+ if (size)
+ print_sched_attr(tcp, tcp->u_arg[1], size);
else
- print_timespec(tcp, tcp->u_arg[1]);
+ printaddr(tcp->u_arg[1]);
+ tprints(", ");
+#ifdef AARCH64
+ /*
+ * Due to a subtle gcc bug that leads to miscompiled aarch64
+ * kernels, the 3rd argument of sched_getattr is not quite 32-bit
+ * as on other architectures. For more details see
+ * https://sourceforge.net/p/strace/mailman/message/35721703/
+ */
+ if (syserror(tcp))
+ print_abnormal_hi(tcp->u_arg[2]);
+#endif
+ tprintf("%u", size);
+ tprintf(", %u", (unsigned int) tcp->u_arg[3]);
}
+
return 0;
}
projects / strace / blobdiff