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signal: add sig_tgkill() kenrnel version support

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Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit is contained in:
ligd 2023-11-24 18:32:06 +08:00 • committed by Xiang Xiao
parent 94cc99d01b
commit 80079f35e4
2 changed files with 75 additions and 13 deletions
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30
include/nuttx/signal.h
View file

@ -413,6 +413,36 @@ int nxsig_queue(int pid, int signo, union sigval value);
int nxsig_kill(pid_t pid, int signo);
/****************************************************************************
* Name: nxsig_tgkill
*
* Description:
* The tgkill() system call can be used to send any signal to a thread.
* See kill() for further information as this is just a simple wrapper
* around the kill() function.
*
* Input Parameters:
* gid - The id of the task to receive the signal.
* tid - The id of the thread to receive the signal. Only positive,
* non-zero values of 'tid' are supported.
* signo - The signal number to send. If 'signo' is zero, no signal is
* sent, but all error checking is performed.
*
* Returned Value:
* On success the signal was send and zero is returned. On error -1 is
* returned, and errno is set one of the following error numbers:
*
* EINVAL An invalid signal was specified.
* EPERM The thread does not have permission to send the
* signal to the target thread.
* ESRCH No thread could be found corresponding to that
* specified by the given thread ID
* ENOSYS Do not support sending signals to process groups.
*
****************************************************************************/
int nxsig_tgkill(pid_t pid, pid_t tid, int signo);
/****************************************************************************
* Name: nxsig_waitinfo
*

58
sched/signal/sig_tgkill.c
View file

@ -40,7 +40,7 @@
****************************************************************************/
/****************************************************************************
* Name: tgkill
* Name: nxsig_tgkill
*
* Description:
* The tgkill() system call can be used to send any signal to a thread.
@ -67,9 +67,8 @@
*
****************************************************************************/
int tgkill(pid_t pid, pid_t tid, int signo)
int nxsig_tgkill(pid_t pid, pid_t tid, int signo)
{
#ifdef HAVE_GROUP_MEMBERS
/* If group members are supported then tgkill() differs from kill().
* kill(), in this case, must follow the POSIX rules for delivery of
* signals in the group environment. Otherwise, kill(), like tgkill()
@ -125,14 +124,47 @@ int tgkill(pid_t pid, pid_t tid, int signo)
return OK;
errout:
set_errno(-ret);
return ERROR;
#else
/* If group members are not supported then tgkill is basically the
* same as kill() other than the sign of the returned value.
*/
return kill(tid, signo);
#endif
return ret;
}
/****************************************************************************
* Name: tgkill
*
* Description:
* The tgkill() system call can be used to send any signal to a thread.
* See kill() for further information as this is just a simple wrapper
* around the kill() function.
*
* Input Parameters:
* gid - The id of the task to receive the signal.
* tid - The id of the thread to receive the signal. Only positive,
* non-zero values of 'tid' are supported.
* signo - The signal number to send. If 'signo' is zero, no signal is
* sent, but all error checking is performed.
*
* Returned Value:
* On success the signal was send and zero is returned. On error -1 is
* returned, and errno is set one of the following error numbers:
*
* EINVAL An invalid signal was specified.
* EPERM The thread does not have permission to send the
* signal to the target thread.
* ESRCH No thread could be found corresponding to that
* specified by the given thread ID
* ENOSYS Do not support sending signals to process groups.
*
****************************************************************************/
int tgkill(pid_t pid, pid_t tid, int signo)
{
int ret;
ret = nxsig_tgkill(pid, tid, signo);
if (ret < 0)
{
set_errno(-ret);
ret = ERROR;
}
return ret;
}