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Add syscalls to Blinkenlights and fix bugs

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Justine Tunney 2022-05-13 13:31:21 -07:00
parent f6df29cc3d
commit 578cb21591
25 changed files with 187 additions and 108 deletions
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57
libc/str/strsignal.c
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@ -1,57 +0,0 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/bits.h"
#include "libc/fmt/magnumstrs.internal.h"
#include "libc/macros.internal.h"
#include "libc/str/str.h"
static char g_strsignal[12];
/**
* Returns string describing signal code.
*
* This returns SIGUNKNOWN for 0 which is the empty value. Textual names
* should be available for signals 1 through 32. Signals in the range 33
* and 128 are returned as a `SIG%03d` string. Everything else is SIGWUT
*
* @param sig is signal number which should be in range 1 through 128
* @return pointer to static memory that mutates on subsequent calls
* @see sigaction()
*/
char *strsignal(int sig) {
const char *s;
strcpy(g_strsignal, "SIG");
if (sig) {
if ((s = GetMagnumStr(kSignalNames, sig))) {
strcpy(g_strsignal + 3, s);
return g_strsignal;
}
}
if (!sig) {
strcpy(g_strsignal + 3, "UNKNOWN");
} else if (1 <= sig && sig <= 128) {
g_strsignal[3] = '0' + sig / 100;
g_strsignal[4] = '0' + sig / 10 % 10;
g_strsignal[5] = '0' + sig % 10;
g_strsignal[6] = 0;
} else {
strcpy(g_strsignal + 3, "WUT");
}
return g_strsignal;
}