initial implementationHEADmaster

1 files changed, 86 insertions, 0 deletions

diff --git a/mkfifo.c b/mkfifo.c
new file mode 100644
index 0000000..2e492fa
--- /dev/null
+++ b/mkfifo.c
@@ -0,0 +1,86 @@
+/*
+ * UNG's Not GNU
+ *
+ * Copyright (c) 2019, Jakob Kaivo <jkk@ung.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#define _POSIX_C_SOURCE 2
+#include <errno.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+static mode_t translate_mode(const char *s)
+{
+	char *end = NULL;
+	mode_t mode = (mode_t)strtol(s, &end, 8);
+
+	if (*end == '\0') {
+		return mode;
+	}
+
+	return 0;
+}
+
+static int mk_fifo(char *path, mode_t mode)
+{
+	if (mkfifo(path, mode) != 0) {
+		fprintf(stderr, "mkfifo: %s: %s\n", path, strerror(errno));
+		return 1;
+	}
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	setlocale(LC_ALL, "");
+
+	mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+
+	int c;
+	while ((c = getopt(argc, argv, "m:p")) != -1) {
+		switch (c) {
+		case 'm':
+			mode = translate_mode(optarg);
+			break;
+
+		default:
+			return 1;
+		}
+	}
+
+	if (optind >= argc) {
+		fprintf(stderr, "mkfifo: missing operand\n");
+		return 1;
+	}
+
+	int ret = 0;
+	do {
+		ret |= mk_fifo(argv[optind], mode);
+	} while (++optind < argc);
+
+	return ret;
+}