Initial Spring 2016 commit.

userland/testbin/frack/do.c

@@ -0,0 +1,251 @@
+/*
+ * Copyright (c) 2013
+ *	The President and Fellows of Harvard College.
+ *      Written by David A. Holland.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <err.h>
+
+#include "data.h"
+#include "name.h"
+#include "do.h"
+
+int
+do_opendir(unsigned name)
+{
+	const char *namestr;
+	int fd;
+
+	namestr = name_get(name);
+	fd = open(namestr, O_RDONLY);
+	if (fd < 0) {
+		err(1, "%s: opendir", namestr);
+	}
+	return fd;
+}
+
+void
+do_closedir(int fd, unsigned name)
+{
+	if (close(fd)) {
+		warn("%s: closedir", name_get(name));
+	}
+}
+
+int
+do_createfile(unsigned name)
+{
+	const char *namestr;
+	int fd;
+
+	namestr = name_get(name);
+	fd = open(namestr, O_WRONLY|O_CREAT|O_EXCL, 0664);
+	if (fd < 0) {
+		err(1, "%s: create", namestr);
+	}
+	printf("create %s\n", namestr);
+	return fd;
+}
+
+int
+do_openfile(unsigned name, int dotrunc)
+{
+	const char *namestr;
+	int fd;
+
+	namestr = name_get(name);
+	fd = open(namestr, O_WRONLY | (dotrunc ? O_TRUNC : 0), 0664);
+	if (fd < 0) {
+		err(1, "%s: open", namestr);
+	}
+	return fd;
+}
+
+void
+do_closefile(int fd, unsigned name)
+{
+	if (close(fd)) {
+		warn("%s: close", name_get(name));
+	}
+}
+
+void
+do_write(int fd, unsigned name, unsigned code, unsigned seq,
+	 off_t pos, off_t len)
+{
+	off_t done = 0;
+	ssize_t ret;
+	char *buf;
+	const char *namestr;
+
+	namestr = name_get(name);
+	buf = data_map(code, seq, len);
+	if (lseek(fd, pos, SEEK_SET) == -1) {
+		err(1, "%s: lseek to %lld", name_get(name), pos);
+	}
+
+	while (done < len) {
+		ret = write(fd, buf + done, len - done);
+		if (ret == -1) {
+			err(1, "%s: write %lld at %lld", name_get(name),
+			    len, pos);
+		}
+		done += ret;
+	}
+
+	printf("write %s: %lld at %lld\n", namestr, len, pos);
+}
+
+void
+do_truncate(int fd, unsigned name, off_t len)
+{
+	const char *namestr;
+
+	namestr = name_get(name);
+	if (ftruncate(fd, len) == -1) {
+		err(1, "%s: truncate to %lld", namestr, len);
+	}
+	printf("truncate %s: to %lld\n", namestr, len);
+}
+
+void
+do_mkdir(unsigned name)
+{
+	const char *namestr;
+
+	namestr = name_get(name);
+	if (mkdir(namestr, 0775) == -1) {
+		err(1, "%s: mkdir", namestr);
+	}
+	printf("mkdir %s\n", namestr);
+}
+
+void
+do_rmdir(unsigned name)
+{
+	const char *namestr;
+
+	namestr = name_get(name);
+	if (rmdir(namestr) == -1) {
+		err(1, "%s: rmdir", namestr);
+	}
+	printf("rmdir %s\n", namestr);
+}
+
+void
+do_unlink(unsigned name)
+{
+	const char *namestr;
+
+	namestr = name_get(name);
+	if (remove(namestr) == -1) {
+		err(1, "%s: remove", namestr);
+	}
+	printf("remove %s\n", namestr);
+}
+
+void
+do_link(unsigned from, unsigned to)
+{
+	const char *fromstr, *tostr;
+
+	fromstr = name_get(from);
+	tostr = name_get(to);
+	if (link(fromstr, tostr) == -1) {
+		err(1, "link %s to %s", fromstr, tostr);
+	}
+	printf("link %s %s\n", fromstr, tostr);
+}
+
+void
+do_rename(unsigned from, unsigned to)
+{
+	const char *fromstr, *tostr;
+
+	fromstr = name_get(from);
+	tostr = name_get(to);
+	if (rename(fromstr, tostr) == -1) {
+		err(1, "rename %s to %s", fromstr, tostr);
+	}
+	printf("rename %s %s\n", fromstr, tostr);
+}
+
+void
+do_renamexd(unsigned fromdir, unsigned from, unsigned todir, unsigned to)
+{
+	char frombuf[64];
+	char tobuf[64];
+
+	strcpy(frombuf, name_get(fromdir));
+	strcat(frombuf, "/");
+	strcat(frombuf, name_get(from));
+
+	strcpy(tobuf, name_get(todir));
+	strcat(tobuf, "/");
+	strcat(tobuf, name_get(to));
+
+	if (rename(frombuf, tobuf) == -1) {
+		err(1, "rename %s to %s", frombuf, tobuf);
+	}
+	printf("rename %s %s\n", frombuf, tobuf);
+}
+
+void
+do_chdir(unsigned name)
+{
+	const char *namestr;
+
+	namestr = name_get(name);
+	if (chdir(namestr) == -1) {
+		err(1, "chdir: %s", namestr);
+	}
+	printf("chdir %s\n", namestr);
+}
+
+void
+do_chdirup(void)
+{
+	if (chdir("..") == -1) {
+		err(1, "chdir: ..");
+	}
+	printf("chdir ..\n");
+}
+
+void
+do_sync(void)
+{
+	if (sync()) {
+		warn("sync");
+	}
+	printf("sync\n");
+	printf("----------------------------------------\n");
+}