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linux-user: add support for rt_tgsigqueueinfo() system call 

Add a new system call: rt_tgsigqueueinfo().

This system call is similar to rt_sigqueueinfo(), but instead of
sending the signal and data to the whole thread group with the ID
equal to the argument tgid, it sends it to a single thread within
that thread group. The ID of the thread is specified by the tid
argument.

The implementation is based on the rt_sigqueueinfo() in linux-user
mode, where the tid is added as the second argument and the
previous second and third argument become arguments three and four,
respectively.

Signed-off-by: Miloš Stojanović <Milos.Stojanovic@rt-rk.com>

Conflicts:
	linux-user/syscall.c
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Miloš Stojanović 2017-05-15 16:59:46 +02:00 committed by Riku Voipio
parent c1a402a7ae
commit cf8b8bfc50
1 changed files with 16 additions and 0 deletions
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16
linux-user/syscall.c
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@ -238,6 +238,7 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
#define __NR_sys_getdents64 __NR_getdents64
#define __NR_sys_getpriority __NR_getpriority
#define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
#define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
#define __NR_sys_syslog __NR_syslog
#define __NR_sys_futex __NR_futex
#define __NR_sys_inotify_init __NR_inotify_init
@ -275,6 +276,8 @@ _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
#endif
_syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
_syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
siginfo_t *, uinfo)
_syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
#ifdef __NR_exit_group
_syscall1(int,exit_group,int,error_code)
@ -8872,6 +8875,19 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
}
break;
case TARGET_NR_rt_tgsigqueueinfo:
{
siginfo_t uinfo;
p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
if (!p) {
goto efault;
}
target_to_host_siginfo(&uinfo, p);
unlock_user(p, arg4, 0);
ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
}
break;
#ifdef TARGET_NR_sigreturn
case TARGET_NR_sigreturn:
if (block_signals()) {