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linux(4): Refactor SIGPWR mapping

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Map Linux RT signals to the native RT signals starting from SIGRTMIN,
and Linux SIGPWR signal map to after the last RT signal.

MFC after:		2 weeks
This commit is contained in:
Dmitry Chagin 2022-05-30 19:55:49 +03:00
parent 669516a1a1
commit 7a7cee5585
1 changed files with 6 additions and 4 deletions
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10
sys/compat/linux/linux.c
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@ -92,6 +92,8 @@ static int bsd_to_linux_sigtbl[LINUX_SIGTBLSZ] = {
LINUX_SIGUSR2 /* SIGUSR2 */
};
#define LINUX_SIGPWREMU (SIGRTMIN + (LINUX_SIGRTMAX - LINUX_SIGRTMIN) + 1)
static int linux_to_bsd_sigtbl[LINUX_SIGTBLSZ] = {
SIGHUP, /* LINUX_SIGHUP */
SIGINT, /* LINUX_SIGINT */
@ -127,7 +129,7 @@ static int linux_to_bsd_sigtbl[LINUX_SIGTBLSZ] = {
* to the first unused FreeBSD signal number. Since Linux supports
* signals from 1 to 64 we are ok here as our SIGRTMIN = 65.
*/
SIGRTMIN, /* LINUX_SIGPWR */
LINUX_SIGPWREMU,/* LINUX_SIGPWR */
SIGSYS /* LINUX_SIGSYS */
};
@ -144,14 +146,14 @@ static inline int
linux_to_bsd_rt_signal(int sig)
{
return (SIGRTMIN + 1 + sig - LINUX_SIGRTMIN);
return (SIGRTMIN + sig - LINUX_SIGRTMIN);
}
static inline int
bsd_to_linux_rt_signal(int sig)
{
return (sig - SIGRTMIN - 1 + LINUX_SIGRTMIN);
return (sig - SIGRTMIN + LINUX_SIGRTMIN);
}
int
@ -172,7 +174,7 @@ bsd_to_linux_signal(int sig)
if (sig <= LINUX_SIGTBLSZ)
return (bsd_to_linux_sigtbl[_SIG_IDX(sig)]);
if (sig == SIGRTMIN)
if (sig == LINUX_SIGPWREMU)
return (LINUX_SIGPWR);
return (bsd_to_linux_rt_signal(sig));