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/*
* Copyright (C) 2002 Manuel Novoa III
* Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
/*
* Sep 11, 2003
* Patch by Atsushi Nemoto <anemo@mba.ocn.ne.jp> to do arch-required
* mapping of signal strings (alpha, mips, hppa, sparc).
*/
/* TODO: make a threadsafe version? */
#include <features.h>
#include <string.h>
#include <bits/uClibc_uintmaxtostr.h>
#include <signal.h>
libc_hidden_proto(strsignal)
libc_hidden_proto(memcpy)
#define _SYS_NSIG 32
#ifdef __UCLIBC_HAS_SIGNUM_MESSAGES__
# define _SYS_SIGMSG_MAXLEN 25
#else /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
# define _SYS_SIGMSG_MAXLEN 0
#endif /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
#if _SYS_SIGMSG_MAXLEN < __UIM_BUFLEN_INT + 15
# define _STRSIGNAL_BUFSIZE (__UIM_BUFLEN_INT + 15)
#else
# define _STRSIGNAL_BUFSIZE _SYS_SIGMSG_MAXLEN
#endif
#ifdef __UCLIBC_HAS_SIGNUM_MESSAGES__
extern const char _string_syssigmsgs[] attribute_hidden;
#if defined(__alpha__) || defined(__mips__) || defined(__hppa__) || defined(__sparc__)
static const unsigned char sstridx[] = {
0,
SIGHUP,
SIGINT,
SIGQUIT,
SIGILL,
SIGTRAP,
SIGIOT,
SIGBUS,
SIGFPE,
SIGKILL,
SIGUSR1,
SIGSEGV,
SIGUSR2,
SIGPIPE,
SIGALRM,
SIGTERM,
#if defined SIGSTKFLT
SIGSTKFLT,
#else
0,
#endif
SIGCHLD,
SIGCONT,
SIGSTOP,
SIGTSTP,
SIGTTIN,
SIGTTOU,
SIGURG,
SIGXCPU,
SIGXFSZ,
SIGVTALRM,
SIGPROF,
SIGWINCH,
SIGIO,
SIGPWR,
SIGSYS,
#if defined SIGEMT
SIGEMT,
#endif
};
#endif
char *strsignal(int signum)
{
register char *s;
int i;
static char buf[_STRSIGNAL_BUFSIZE];
static const char unknown[] = {
'U', 'n', 'k', 'n', 'o', 'w', 'n', ' ', 's', 'i', 'g', 'n', 'a', 'l', ' '
};
#if defined(__alpha__) || defined(__mips__) || defined(__hppa__) || defined(__sparc__)
/* Need to translate signum to string index. */
for (i = 0 ; i < sizeof(sstridx)/sizeof(sstridx[0]) ; i++) {
if (sstridx[i] == signum) {
goto GOT_SSTRIDX;
}
}
i = INT_MAX; /* Failed. */
GOT_SSTRIDX:
#else
/* No signum to string index translation needed. */
i = signum;
#endif
if (((unsigned int) signum) < _SYS_NSIG) {
/* Trade time for space. This function should rarely be called
* so rather than keeping an array of pointers for the different
* messages, just run through the buffer until we find the
* correct string. */
for (s = (char *) _string_syssigmsgs ; i ; ++s) {
if (!*s) {
--i;
}
}
if (*s) { /* Make sure we have an actual message. */
goto DONE;
}
}
s = _int10tostr(buf+sizeof(buf)-1, signum) - sizeof(unknown);
memcpy(s, unknown, sizeof(unknown));
DONE:
return s;
}
#else /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
char *strsignal(int signum)
{
static char buf[_STRSIGNAL_BUFSIZE];
static const char unknown[] = {
'U', 'n', 'k', 'n', 'o', 'w', 'n', ' ', 's', 'i', 'g', 'n', 'a', 'l', ' '
};
return (char *) memcpy(_int10tostr(buf+sizeof(buf)-1, signum)
- sizeof(unknown),
unknown, sizeof(unknown));
}
#endif /* __UCLIBC_HAS_SIGNUM_MESSAGES__ */
libc_hidden_def(strsignal)
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