From 407a119bfd350101a8ef947a9edd58b01644ec89 Mon Sep 17 00:00:00 2001 From: Tonis Tiigi Date: Tue, 4 Jan 2022 20:18:19 -0800 Subject: [PATCH] linux-user: call set/getscheduler set/getparam directly There seems to be difference in syscall and libc definition of these methods and therefore musl does not implement them (1e21e78bf7). Call syscall directly to ensure the behavior of the libc of user application, not the libc that was used to build QEMU. Signed-off-by: Tonis Tiigi Message-Id: <20220105041819.24160-3-tonistiigi@gmail.com> Reviewed-by: Laurent Vivier Signed-off-by: Laurent Vivier --- linux-user/syscall.c | 34 ++++++++++++++++++++++++---------- linux-user/syscall_defs.h | 4 ++++ 2 files changed, 28 insertions(+), 10 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6de116eb90..01cd59cdce 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -359,6 +359,17 @@ _syscall4(int, sys_sched_getattr, pid_t, pid, struct sched_attr *, attr, #define __NR_sys_sched_setattr __NR_sched_setattr _syscall3(int, sys_sched_setattr, pid_t, pid, struct sched_attr *, attr, unsigned int, flags); +#define __NR_sys_sched_getscheduler __NR_sched_getscheduler +_syscall1(int, sys_sched_getscheduler, pid_t, pid); +#define __NR_sys_sched_setscheduler __NR_sched_setscheduler +_syscall3(int, sys_sched_setscheduler, pid_t, pid, int, policy, + const struct sched_param *, param); +#define __NR_sys_sched_getparam __NR_sched_getparam +_syscall2(int, sys_sched_getparam, pid_t, pid, + struct sched_param *, param); +#define __NR_sys_sched_setparam __NR_sched_setparam +_syscall2(int, sys_sched_setparam, pid_t, pid, + const struct sched_param *, param); #define __NR_sys_getcpu __NR_getcpu _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache); _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, @@ -10794,30 +10805,32 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return ret; case TARGET_NR_sched_setparam: { - struct sched_param *target_schp; + struct target_sched_param *target_schp; struct sched_param schp; if (arg2 == 0) { return -TARGET_EINVAL; } - if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) + if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) { return -TARGET_EFAULT; + } schp.sched_priority = tswap32(target_schp->sched_priority); unlock_user_struct(target_schp, arg2, 0); - return get_errno(sched_setparam(arg1, &schp)); + return get_errno(sys_sched_setparam(arg1, &schp)); } case TARGET_NR_sched_getparam: { - struct sched_param *target_schp; + struct target_sched_param *target_schp; struct sched_param schp; if (arg2 == 0) { return -TARGET_EINVAL; } - ret = get_errno(sched_getparam(arg1, &schp)); + ret = get_errno(sys_sched_getparam(arg1, &schp)); if (!is_error(ret)) { - if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) + if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) { return -TARGET_EFAULT; + } target_schp->sched_priority = tswap32(schp.sched_priority); unlock_user_struct(target_schp, arg2, 1); } @@ -10825,19 +10838,20 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return ret; case TARGET_NR_sched_setscheduler: { - struct sched_param *target_schp; + struct target_sched_param *target_schp; struct sched_param schp; if (arg3 == 0) { return -TARGET_EINVAL; } - if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) + if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) { return -TARGET_EFAULT; + } schp.sched_priority = tswap32(target_schp->sched_priority); unlock_user_struct(target_schp, arg3, 0); - return get_errno(sched_setscheduler(arg1, arg2, &schp)); + return get_errno(sys_sched_setscheduler(arg1, arg2, &schp)); } case TARGET_NR_sched_getscheduler: - return get_errno(sched_getscheduler(arg1)); + return get_errno(sys_sched_getscheduler(arg1)); case TARGET_NR_sched_getattr: { struct target_sched_attr *target_scha; diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 66244589aa..cca561f622 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -2904,4 +2904,8 @@ struct target_sched_attr { abi_uint sched_util_max; }; +struct target_sched_param { + abi_int sched_priority; +}; + #endif