6 files changed, 236 insertions, 16 deletions

diff --git a/system/lib/libc/musl/src/legacy/err.c b/system/lib/libc/musl/src/legacy/err.c
new file mode 100644
index 00000000..0d6ab524
--- /dev/null
+++ b/system/lib/libc/musl/src/legacy/err.c
@@ -0,0 +1,67 @@
+#include <err.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+extern char *__progname;
+
+void vwarn(const char *fmt, va_list ap)
+{
+	fprintf (stderr, "%s: ", __progname);
+	if (fmt) {
+		vfprintf(stderr, fmt, ap);
+		fputs (": ", stderr);
+	}
+	perror(0);
+}
+
+void vwarnx(const char *fmt, va_list ap)
+{
+	fprintf (stderr, "%s: ", __progname);
+	if (fmt) vfprintf(stderr, fmt, ap);
+	putc('\n', stderr);
+}
+
+_Noreturn void verr(int status, const char *fmt, va_list ap)
+{
+	vwarn(fmt, ap);
+	exit(status);
+}
+
+_Noreturn void verrx(int status, const char *fmt, va_list ap)
+{
+	vwarnx(fmt, ap);
+	exit(status);
+}
+
+void warn(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vwarn(fmt, ap);
+	va_end(ap);
+}
+
+void warnx(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vwarnx(fmt, ap);
+	va_end(ap);
+}
+
+_Noreturn void err(int status, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	verr(status, fmt, ap);
+	va_end(ap);
+}
+
+_Noreturn void errx(int status, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	verrx(status, fmt, ap);
+	va_end(ap);
+}
diff --git a/system/lib/libc/musl/src/misc/getopt.c b/system/lib/libc/musl/src/misc/getopt.c
new file mode 100644
index 00000000..f1a1639c
--- /dev/null
+++ b/system/lib/libc/musl/src/misc/getopt.c
@@ -0,0 +1,74 @@
+#include <unistd.h>
+#include <wchar.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include "libc.h"
+
+char *optarg;
+int optind=1, opterr=1, optopt, __optpos, __optreset=0;
+
+#define optpos __optpos
+weak_alias(__optreset, optreset);
+
+int getopt(int argc, char * const argv[], const char *optstring)
+{
+	int i;
+	wchar_t c, d;
+	int k, l;
+	char *optchar;
+
+	if (!optind || __optreset) {
+		__optreset = 0;
+		__optpos = 0;
+		optind = 1;
+	}
+
+	if (optind >= argc || !argv[optind] || argv[optind][0] != '-' || !argv[optind][1])
+		return -1;
+	if (argv[optind][1] == '-' && !argv[optind][2])
+		return optind++, -1;
+
+	if (!optpos) optpos++;
+	if ((k = mbtowc(&c, argv[optind]+optpos, MB_LEN_MAX)) < 0) {
+		k = 1;
+		c = 0xfffd; /* replacement char */
+	}
+	optchar = argv[optind]+optpos;
+	optopt = c;
+	optpos += k;
+
+	if (!argv[optind][optpos]) {
+		optind++;
+		optpos = 0;
+	}
+
+	for (i=0; (l = mbtowc(&d, optstring+i, MB_LEN_MAX)) && d!=c; i+=l>0?l:1);
+
+	if (d != c) {
+		if (optstring[0] != ':' && opterr) {
+			write(2, argv[0], strlen(argv[0]));
+			write(2, ": illegal option: ", 18);
+			write(2, optchar, k);
+			write(2, "\n", 1);
+		}
+		return '?';
+	}
+	if (optstring[i+1] == ':') {
+		if (optind >= argc) {
+			if (optstring[0] == ':') return ':';
+			if (opterr) {
+				write(2, argv[0], strlen(argv[0]));
+				write(2, ": option requires an argument: ", 31);
+				write(2, optchar, k);
+				write(2, "\n", 1);
+			}
+			return '?';
+		}
+		optarg = argv[optind++] + optpos;
+		optpos = 0;
+	}
+	return c;
+}
+
+weak_alias(getopt, __posix_getopt);
diff --git a/system/lib/libc/musl/src/misc/getopt_long.c b/system/lib/libc/musl/src/misc/getopt_long.c
new file mode 100644
index 00000000..4ef5a5c7
--- /dev/null
+++ b/system/lib/libc/musl/src/misc/getopt_long.c
@@ -0,0 +1,59 @@
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <getopt.h>
+#include <stdio.h>
+
+extern int __optpos, __optreset;
+
+static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
+{
+	if (!optind || __optreset) {
+		__optreset = 0;
+		__optpos = 0;
+		optind = 1;
+	}
+	if (optind >= argc || !argv[optind] || argv[optind][0] != '-') return -1;
+	if ((longonly && argv[optind][1]) ||
+		(argv[optind][1] == '-' && argv[optind][2]))
+	{
+		int i;
+		for (i=0; longopts[i].name; i++) {
+			const char *name = longopts[i].name;
+			char *opt = argv[optind]+1;
+			if (*opt == '-') opt++;
+			for (; *name && *name == *opt; name++, opt++);
+			if (*name || (*opt && *opt != '=')) continue;
+			if (*opt == '=') {
+				if (!longopts[i].has_arg) continue;
+				optarg = opt+1;
+			} else {
+				if (longopts[i].has_arg == required_argument) {
+					if (!(optarg = argv[++optind]))
+						return ':';
+				} else optarg = NULL;
+			}
+			optind++;
+			if (idx) *idx = i;
+			if (longopts[i].flag) {
+				*longopts[i].flag = longopts[i].val;
+				return 0;
+			}
+			return longopts[i].val;
+		}
+		if (argv[optind][1] == '-') {
+			optind++;
+			return '?';
+		}
+	}
+	return getopt(argc, argv, optstring);
+}
+
+int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
+{
+	return __getopt_long(argc, argv, optstring, longopts, idx, 0);
+}
+
+int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
+{
+	return __getopt_long(argc, argv, optstring, longopts, idx, 1);
+}
diff --git a/system/lib/libc/musl/src/stdio/__toread.c b/system/lib/libc/musl/src/stdio/__toread.c
index 2e804f64..f00cc467 100644
--- a/system/lib/libc/musl/src/stdio/__toread.c
+++ b/system/lib/libc/musl/src/stdio/__toread.c
@@ -12,13 +12,3 @@ int __toread(FILE *f)
 	f->rpos = f->rend = f->buf;
 	return 0;
 }
-
-static const int dummy = 0;
-weak_alias(dummy, __towrite_used);
-
-void __stdio_exit(void);
-
-void __seek_on_exit()
-{
-	if (!__towrite_used) __stdio_exit();
-}
diff --git a/system/lib/libc/musl/src/stdio/__towrite.c b/system/lib/libc/musl/src/stdio/__towrite.c
new file mode 100644
index 00000000..3698d8b7
--- /dev/null
+++ b/system/lib/libc/musl/src/stdio/__towrite.c
@@ -0,0 +1,18 @@
+#include "stdio_impl.h"
+
+int __towrite(FILE *f)
+{
+	f->mode |= f->mode-1;
+	if (f->flags & (F_NOWR)) {
+		f->flags |= F_ERR;
+		return EOF;
+	}
+	/* Clear read buffer (easier than summoning nasal demons) */
+	f->rpos = f->rend = 0;
+
+	/* Activate write through the buffer. */
+	f->wpos = f->wbase = f->buf;
+	f->wend = f->buf + f->buf_size;
+
+	return 0;
+}
diff --git a/system/lib/libc/musl/src/stdlib/strtod.c b/system/lib/libc/musl/src/stdlib/strtod.c
index 461dcf85..35f640da 100644
--- a/system/lib/libc/musl/src/stdlib/strtod.c
+++ b/system/lib/libc/musl/src/stdlib/strtod.c
@@ -32,9 +32,21 @@ long double strtold(const char *restrict s, char **restrict p)
 	return strtox(s, p, 2);
 }
 
-weak_alias(strtof, strtof_l);
-weak_alias(strtod, strtod_l);
-weak_alias(strtold, strtold_l);
-weak_alias(strtof, __strtof_l);
-weak_alias(strtod, __strtod_l);
-weak_alias(strtold, __strtold_l);
+float strtof_l(const char *restrict s, char **restrict p, struct __locale_struct *loc)
+{
+  return strtof(s, p);
+}
+
+double strtod_l(const char *restrict s, char **restrict p, struct __locale_struct *loc)
+{
+  return strtod(s, p);
+}
+
+long double strtold_l(const char *restrict s, char **restrict p, struct __locale_struct *loc)
+{
+  return strtold(s, p);
+}
+
+weak_alias(strtof_l, __strtof_l);
+weak_alias(strtod_l, __strtod_l);
+weak_alias(strtold_l, __strtold_l);