commit a53adb79711ccfc76a4ee32b20253045cdab55c7
Author: Mark Wielaard <mark@klomp.org>
Date: Mon Jul 27 16:36:17 2020 +0200
Handle linux syscalls sched_getattr and sched_setattr
The only "special" thing about these syscalls is that the given
struct sched_attr determines its own size for future expansion.
Original fix by "ISHIKAWA,chiaki" <ishikawa@yk.rim.or.jp>
https://bugs.kde.org/show_bug.cgi?id=369029
diff --git a/coregrind/m_syswrap/priv_syswrap-linux.h b/coregrind/m_syswrap/priv_syswrap-linux.h
index cdc73c1e6..eb0b320ca 100644
--- a/coregrind/m_syswrap/priv_syswrap-linux.h
+++ b/coregrind/m_syswrap/priv_syswrap-linux.h
@@ -227,6 +227,8 @@ DECL_TEMPLATE(linux, sys_fremovexattr);
// syscalls.
DECL_TEMPLATE(linux, sys_sched_setparam);
DECL_TEMPLATE(linux, sys_sched_getparam);
+DECL_TEMPLATE(linux, sys_sched_setattr);
+DECL_TEMPLATE(linux, sys_sched_getattr);
DECL_TEMPLATE(linux, sys_sched_setscheduler);
DECL_TEMPLATE(linux, sys_sched_getscheduler);
DECL_TEMPLATE(linux, sys_sched_yield);
diff --git a/coregrind/m_syswrap/syswrap-amd64-linux.c b/coregrind/m_syswrap/syswrap-amd64-linux.c
index 28d90135a..d6f3eb910 100644
--- a/coregrind/m_syswrap/syswrap-amd64-linux.c
+++ b/coregrind/m_syswrap/syswrap-amd64-linux.c
@@ -846,9 +846,8 @@ static SyscallTableEntry syscall_table[] = {
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 311
LINX_(__NR_kcmp, sys_kcmp), // 312
LINX_(__NR_finit_module, sys_finit_module), // 313
-// LIN__(__NR_sched_setattr, sys_ni_syscall), // 314
-
-// LIN__(__NR_sched_getattr, sys_ni_syscall), // 315
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 314
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 315
LINX_(__NR_renameat2, sys_renameat2), // 316
// LIN__(__NR_seccomp, sys_ni_syscall), // 317
LINXY(__NR_getrandom, sys_getrandom), // 318
diff --git a/coregrind/m_syswrap/syswrap-arm-linux.c b/coregrind/m_syswrap/syswrap-arm-linux.c
index 579542785..70700e53f 100644
--- a/coregrind/m_syswrap/syswrap-arm-linux.c
+++ b/coregrind/m_syswrap/syswrap-arm-linux.c
@@ -1009,6 +1009,8 @@ static SyscallTableEntry syscall_main_table[] = {
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 376
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 377
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 380
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 381
LINX_(__NR_renameat2, sys_renameat2), // 382
LINXY(__NR_getrandom, sys_getrandom), // 384
diff --git a/coregrind/m_syswrap/syswrap-arm64-linux.c b/coregrind/m_syswrap/syswrap-arm64-linux.c
index 81e01456f..acca02442 100644
--- a/coregrind/m_syswrap/syswrap-arm64-linux.c
+++ b/coregrind/m_syswrap/syswrap-arm64-linux.c
@@ -806,8 +806,8 @@ static SyscallTableEntry syscall_main_table[] = {
LINX_(__NR_process_vm_writev, sys_process_vm_writev), // 271
LINX_(__NR_kcmp, sys_kcmp), // 272
LINX_(__NR_finit_module, sys_finit_module), // 273
- // (__NR_sched_setattr, sys_ni_syscall), // 274
- // (__NR_sched_getattr, sys_ni_syscall), // 275
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 274
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 275
LINX_(__NR_renameat2, sys_renameat2), // 276
// (__NR_seccomp, sys_ni_syscall), // 277
LINXY(__NR_getrandom, sys_getrandom), // 278
diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index 5b5b7eee6..56be3032d 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -3677,6 +3677,41 @@ POST(sys_sched_getparam)
POST_MEM_WRITE( ARG2, sizeof(struct vki_sched_param) );
}
+PRE(sys_sched_setattr)
+{
+ struct vki_sched_attr *attr;
+ PRINT("sched_setattr ( %ld, %#" FMT_REGWORD "x, %#"
+ FMT_REGWORD "x )", SARG1, ARG2, ARG3 );
+ PRE_REG_READ3(long, "sched_setattr",
+ vki_pid_t, pid, struct sched_attr *, p, unsigned int, flags);
+ /* We need to be able to read at least the size field. */
+ PRE_MEM_READ( "sched_setattr(attr->size)", ARG2, sizeof(vki_uint32_t) );
+ attr = (struct vki_sched_attr *)(Addr)ARG2;
+ if (ML_(safe_to_deref)(attr,sizeof(vki_uint32_t)))
+ PRE_MEM_READ( "sched_setattr(attr)", (Addr)attr, attr->size);
+}
+
+PRE(sys_sched_getattr)
+{
+ struct vki_sched_attr *attr;
+ PRINT("sched_getattr ( %ld, %#" FMT_REGWORD "x, %ld, %#"
+ FMT_REGWORD "x )", SARG1, ARG2, ARG3, ARG4 );
+ PRE_REG_READ4(long, "sched_getattr",
+ vki_pid_t, pid, struct sched_attr *, p,
+ unsigned int, size, unsigned int, flags);
+ /* We need to be able to read at least the size field. */
+ PRE_MEM_READ( "sched_setattr(attr->size)", ARG2, sizeof(vki_uint32_t) );
+ /* And the kernel needs to be able to write to the whole struct size. */
+ attr = (struct vki_sched_attr *)(Addr)ARG2;
+ if (ML_(safe_to_deref)(attr,sizeof(vki_uint32_t)))
+ PRE_MEM_WRITE( "sched_setattr(attr)", (Addr)attr, attr->size);
+}
+POST(sys_sched_getattr)
+{
+ struct vki_sched_attr *attr = (struct vki_sched_attr *)(Addr)ARG2;
+ POST_MEM_WRITE( (Addr)attr, attr->size );
+}
+
PRE(sys_sched_getscheduler)
{
PRINT("sys_sched_getscheduler ( %ld )", SARG1);
diff --git a/coregrind/m_syswrap/syswrap-ppc32-linux.c b/coregrind/m_syswrap/syswrap-ppc32-linux.c
index eed12a1bc..c19cb9e0e 100644
--- a/coregrind/m_syswrap/syswrap-ppc32-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc32-linux.c
@@ -1016,6 +1016,9 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 351
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 352
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 355
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 356
+
LINXY(__NR_getrandom, sys_getrandom), // 359
LINXY(__NR_memfd_create, sys_memfd_create), // 360
diff --git a/coregrind/m_syswrap/syswrap-ppc64-linux.c b/coregrind/m_syswrap/syswrap-ppc64-linux.c
index d58200b49..b6422a765 100644
--- a/coregrind/m_syswrap/syswrap-ppc64-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc64-linux.c
@@ -998,6 +998,8 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 351
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 352
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 355
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 356
LINX_(__NR_renameat2, sys_renameat2), // 357
LINXY(__NR_getrandom, sys_getrandom), // 359
diff --git a/coregrind/m_syswrap/syswrap-s390x-linux.c b/coregrind/m_syswrap/syswrap-s390x-linux.c
index a0a330aa2..3427fee16 100644
--- a/coregrind/m_syswrap/syswrap-s390x-linux.c
+++ b/coregrind/m_syswrap/syswrap-s390x-linux.c
@@ -825,8 +825,8 @@ static SyscallTableEntry syscall_table[] = {
LINX_(__NR_kcmp, sys_kcmp), // 343
// ?????(__NR_finit_module, ), // 344
-// ?????(__NR_sched_setattr, ), // 345
-// ?????(__NR_sched_getattr, ), // 346
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 345
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 346
LINX_(__NR_renameat2, sys_renameat2), // 347
// ?????(__NR_seccomp, ), // 348
LINXY(__NR_getrandom, sys_getrandom), // 349
diff --git a/coregrind/m_syswrap/syswrap-x86-linux.c b/coregrind/m_syswrap/syswrap-x86-linux.c
index 332ed0bf2..b59d96f37 100644
--- a/coregrind/m_syswrap/syswrap-x86-linux.c
+++ b/coregrind/m_syswrap/syswrap-x86-linux.c
@@ -1580,8 +1580,8 @@ static SyscallTableEntry syscall_table[] = {
LINX_(__NR_kcmp, sys_kcmp), // 349
// LIN__(__NR_finit_module, sys_ni_syscall), // 350
-// LIN__(__NR_sched_setattr, sys_ni_syscall), // 351
-// LIN__(__NR_sched_getattr, sys_ni_syscall), // 352
+ LINX_(__NR_sched_setattr, sys_sched_setattr), // 351
+ LINXY(__NR_sched_getattr, sys_sched_getattr), // 352
LINX_(__NR_renameat2, sys_renameat2), // 353
// LIN__(__NR_seccomp, sys_ni_syscall), // 354
diff --git a/include/vki/vki-linux.h b/include/vki/vki-linux.h
index 75b583165..ef93b9258 100644
--- a/include/vki/vki-linux.h
+++ b/include/vki/vki-linux.h
@@ -410,6 +410,23 @@ struct vki_sched_param {
int sched_priority;
};
+struct vki_sched_attr {
+ vki_uint32_t size;
+ vki_uint32_t sched_policy;
+ vki_uint64_t sched_flags;
+
+ /* SCHED_NORMAL, SCHED_BATCH */
+ vki_int32_t sched_nice;
+
+ /* SCHED_FIFO, SCHED_RR */
+ vki_uint32_t sched_priority;
+
+ /* SCHED_DEADLINE */
+ vki_uint64_t sched_runtime;
+ vki_uint64_t sched_deadline;
+ vki_uint64_t sched_period;
+};
+
#define VKI_TASK_COMM_LEN 16
//----------------------------------------------------------------------