Implement sched_getattr and sched_setattr syscalls decoding
* xlat/sched_flags.in: New file.
* sched.c: Include "xlat/sched_flags.h".
(print_sched_attr, sys_sched_setattr, sys_sched_getattr): New functions.
* linux/dummy.h (sys_sched_getattr, sys_sched_setattr): Remove.
* tests/sched_xetattr.c: New file.
* tests/sched_xetattr.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add sched_xetattr.
(TESTS): Add sched_xetattr.test.
* tests/.gitignore: Add sched_xetattr.
diff --git a/linux/dummy.h b/linux/dummy.h
index 1fc2d0b..9394904 100644
--- a/linux/dummy.h
+++ b/linux/dummy.h
@@ -39,8 +39,6 @@
#define sys_lookup_dcookie printargs
#define sys_name_to_handle_at printargs
#define sys_open_by_handle_at printargs
-#define sys_sched_getattr printargs
-#define sys_sched_setattr printargs
#define sys_sysfs printargs
#define sys_vm86 printargs
#define sys_vm86old printargs
diff --git a/sched.c b/sched.c
index eda241f..e473046 100644
--- a/sched.c
+++ b/sched.c
@@ -3,6 +3,7 @@
#include <sched.h>
#include "xlat/schedulers.h"
+#include "xlat/sched_flags.h"
SYS_FUNC(sched_getscheduler)
{
@@ -62,3 +63,56 @@
}
return 0;
}
+
+static void
+print_sched_attr(struct tcb *tcp, const long addr, unsigned int size)
+{
+ struct {
+ uint32_t size;
+ uint32_t sched_policy;
+ uint64_t sched_flags;
+ uint32_t sched_nice;
+ uint32_t sched_priority;
+ uint64_t sched_runtime;
+ uint64_t sched_deadline;
+ uint64_t sched_period;
+ } attr = {};
+
+ if (size > sizeof(attr))
+ size = sizeof(attr);
+ if (umoven_or_printaddr(tcp, addr, size, &attr))
+ return;
+
+ tprintf("{size=%u, sched_policy=", attr.size);
+ printxval(schedulers, attr.sched_policy, "SCHED_???");
+ tprints(", sched_flags=");
+ printflags(sched_flags, attr.sched_flags, "SCHED_FLAG_???");
+ tprintf(", sched_nice=%d", attr.sched_nice);
+ tprintf(", sched_priority=%u", attr.sched_priority);
+ tprintf(", sched_runtime=%" PRIu64, attr.sched_runtime);
+ tprintf(", sched_deadline=%" PRIu64, attr.sched_deadline);
+ tprintf(", sched_period=%" PRIu64 "}", attr.sched_period);
+}
+
+SYS_FUNC(sched_setattr)
+{
+ tprintf("%d, ", (int) tcp->u_arg[0]);
+ print_sched_attr(tcp, tcp->u_arg[1], 0x100);
+ tprintf(", %u", (unsigned int) tcp->u_arg[2]);
+
+ return RVAL_DECODED;
+}
+
+SYS_FUNC(sched_getattr)
+{
+ if (entering(tcp)) {
+ tprintf("%d, ", (int) tcp->u_arg[0]);
+ } else {
+ print_sched_attr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
+ tprintf(", %u, %u",
+ (unsigned int) tcp->u_arg[2],
+ (unsigned int) tcp->u_arg[3]);
+ }
+
+ return 0;
+}
diff --git a/tests/.gitignore b/tests/.gitignore
index 6354c7a..51d8dd2 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -20,6 +20,7 @@
netlink_unix_diag
pc
pipe
+sched_xetattr
scm_rights
seccomp
select
diff --git a/tests/Makefile.am b/tests/Makefile.am
index e56643c..2eb3133 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -31,6 +31,7 @@
netlink_unix_diag \
pc \
pipe \
+ sched_xetattr \
scm_rights \
seccomp \
select \
@@ -79,6 +80,7 @@
ipc_msg.test \
ipc_shm.test \
ipc_sem.test \
+ sched_xetattr.test \
scm_rights-fd.test \
seccomp.test \
select.test \
diff --git a/tests/sched_xetattr.c b/tests/sched_xetattr.c
new file mode 100644
index 0000000..9a30eff
--- /dev/null
+++ b/tests/sched_xetattr.c
@@ -0,0 +1,65 @@
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#if defined __NR_sched_getattr && defined __NR_sched_setattr
+
+int
+main(void)
+{
+ static union {
+ struct {
+ uint32_t size;
+ uint32_t sched_policy;
+ uint64_t sched_flags;
+ uint32_t sched_nice;
+ uint32_t sched_priority;
+ uint64_t sched_runtime;
+ uint64_t sched_deadline;
+ uint64_t sched_period;
+ } attr;
+ char buf[256];
+ } sched;
+
+ if (syscall(__NR_sched_getattr, 0, &sched, sizeof(sched), 0))
+ return 77;
+
+ printf("sched_getattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+, sched_flags=%s, sched_nice=%u, sched_priority=%u, sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64 ", sched_period=%" PRIu64 "\\}, 256, 0\\) += 0\n",
+ sched.attr.size,
+ sched.attr.sched_flags ? "SCHED_FLAG_RESET_ON_FORK" : "0",
+ sched.attr.sched_nice,
+ sched.attr.sched_priority,
+ sched.attr.sched_runtime,
+ sched.attr.sched_deadline,
+ sched.attr.sched_period);
+
+ sched.attr.sched_flags |= 1;
+ if (syscall(__NR_sched_setattr, 0, &sched, 0))
+ return 77;
+
+ printf("sched_setattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+, sched_flags=%s, sched_nice=%u, sched_priority=%u, sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64 ", sched_period=%" PRIu64 "\\}, 0\\) += 0\n",
+ sched.attr.size,
+ "SCHED_FLAG_RESET_ON_FORK",
+ sched.attr.sched_nice,
+ sched.attr.sched_priority,
+ sched.attr.sched_runtime,
+ sched.attr.sched_deadline,
+ sched.attr.sched_period);
+
+ return 0;
+}
+
+#else
+
+int
+main(void)
+{
+ return 77;
+}
+
+#endif
diff --git a/tests/sched_xetattr.test b/tests/sched_xetattr.test
new file mode 100755
index 0000000..fe7efec
--- /dev/null
+++ b/tests/sched_xetattr.test
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Check sched_getattr and sched_setattr syscalls decoding.
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+OUT="$LOG.out"
+run_strace -e sched_getattr,sched_setattr $args > "$OUT"
+match_grep "$LOG" "$OUT"
+rm -f "$OUT"
+
+exit 0
diff --git a/xlat/sched_flags.in b/xlat/sched_flags.in
new file mode 100644
index 0000000..824d91d
--- /dev/null
+++ b/xlat/sched_flags.in
@@ -0,0 +1 @@
+SCHED_FLAG_RESET_ON_FORK 1
