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#include <__signal.h> // for __sys_signame
#include <asm-generic/signal.h> // for SIGRTMAX, SIGRTMIN, SIGHUP, SIGSYS
#include <stdio.h> // for snprintf
#include <string.h> // for strlcpy
int sig2str(int signum, char *str)
{
if (signum >= SIGHUP && signum <= SIGSYS) {
strlcpy(str, __sys_signame[signum - SIGHUP],
sizeof(__sys_signame[signum - SIGHUP]));
return 0;
}
if (signum == SIGRTMIN) {
strlcpy(str, "SIGRTMIN", sizeof("SIGRTMIN"));
return 0;
}
if (signum == SIGRTMAX) {
strlcpy(str, "SIGRTMAX", sizeof("SIGRTMAX"));
return 0;
}
if (signum > SIGRTMIN && signum < SIGRTMAX) {
if (signum - SIGRTMIN <= SIGRTMAX - signum) {
snprintf(str, sizeof("RTMIN+") + 1, "RTMIN+%d",
signum - SIGRTMIN);
} else {
snprintf(str, sizeof("RTMAX-") + 1, "RTMAX-%d",
SIGRTMAX - signum);
}
return 0;
}
return -1;
}
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