runit-scripts/functions/runit-logger.c

/*
 * this program writes to stdout what it reads from stdin
 *
 * cc runit-logger.c -o runit-logger
 *
 * clang -std=c99 $(portageq envvar COMMON_FLAGS) $(portageq envvar LDFLAGS) \
 *   runit-logger.c -o runit-logger
 */


#define _POSIX_C_SOURCE 200809L

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>

int
main(void)
{
	ssize_t readed;
	size_t	len  = 0;
	char   *line = NULL;

	for (;;) {
		if ((readed = getline(&line, &len, stdin)) == -1) {
			if (!errno) return 0;

			warn("getline");
			continue;
		}

		if (write(STDOUT_FILENO, line, readed) != readed) warn("write");
	}

	return !0;
}