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Cygwin: kill(1): align real-time signal naming to Linux kill(1) 

Allow RT<N>, RTMIN+<N> and RTMAX-<N> for RT signals.
Translate RT signal numbers to an "RT<N>" string.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2023-03-15 21:54:13 +01:00
parent 3569e3577c
commit 3dfb3217af
1 changed files with 43 additions and 2 deletions
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45
winsup/utils/kill.cc
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@ -71,13 +71,51 @@ print_version ()
static const char *
strsigno (int signo)
{
if (signo > 0 && signo < NSIG)
static char sigbuf[8];
if (signo > 0 && signo < SIGRTMIN)
return sys_sigabbrev[signo];
if (signo <= SIGRTMAX)
{
snprintf (sigbuf, sizeof sigbuf, "SIGRT%d", signo - SIGRTMIN);
return sigbuf;
}
static char buf[sizeof ("Unknown signal") + 32];
sprintf (buf, "Unknown signal %d", signo);
return buf;
}
static int
strtortsig (const char *sig)
{
bool neg = false;
char *endp = NULL;
int signo;
sig += 5;
if (!strcmp (sig, "MIN"))
return SIGRTMIN;
if (!strcmp (sig, "MAX"))
return SIGRTMAX;
if (!strncmp (sig, "MIN+", 4))
sig += 4;
else if (!strncmp (sig, "MAX-", 4))
{
sig += 4;
neg = true;
}
signo = strtoul (sig, &endp, 10);
if (!endp || *endp)
return 0;
if (neg)
signo = SIGRTMAX - signo;
else
signo = SIGRTMIN + signo;
if (signo < SIGRTMIN || signo > SIGRTMAX)
return 0;
return signo;
}
static int
getsig (const char *in_sig)
{
@ -92,7 +130,10 @@ getsig (const char *in_sig)
sprintf (buf, "SIG%-.20s", in_sig);
sig = buf;
}
intsig = strtosigno (sig) ?: atoi (in_sig);
if (!strncmp (sig, "SIGRT", 5))
intsig = strtortsig (sig);
else
intsig = strtosigno (sig) ?: atoi (in_sig);
char *p;
if (!intsig && (strcmp (sig, "SIG0") != 0 && (strtol (in_sig, &p, 10) != 0 || *p)))
intsig = -1;