shell: mufs: add utilities to append, cat, rm, mv and stat files

source/shell/mufs.c

@@ -18,6 +18,11 @@ static void do_mufs_mount(const char *s);
 static void do_mufs_format(const char *s);
 static void do_mufs_mkdir(const char *s);
 static void do_mufs_rmdir(const char *s);
+static void do_mufs_stat(const char *stat);
+static void do_mufs_cat(const char *s);
+static void do_mufs_append(const char *s);
+static void do_mufs_mv(const char *s);
+static void do_mufs_rm(const char *s);
 static void do_mufs_ls(const char *s);
 
 static struct cmd mufs_cmds[] = {
@@ -26,6 +31,11 @@ static struct cmd mufs_cmds[] = {
 	{ "mkdir", do_mufs_mkdir },
 	{ "rmdir", do_mufs_rmdir },
 	{ "ls", do_mufs_ls },
+	{ "stat", do_mufs_stat },
+	{ "cat", do_mufs_cat },
+	{ "append", do_mufs_append },
+	{ "mv", do_mufs_mv, },
+	{ "rm", do_mufs_rm, },
 	{ NULL, NULL },
 };
 
@@ -81,6 +91,102 @@ static void do_mufs_rmdir(const char *s)
 	}
 }
 
+static void do_mufs_stat(const char *s)
+{
+	struct mufs_stat stat;
+
+	if (mufs_stat(&mufs, s, &stat) < 0) {
+		fprintf(stderr, "error: unable to stat the file\n");
+		return;
+	}
+
+	switch (stat.type) {
+	case MUFS_DIR: printf("  type: directory\n"); break;
+	case MUFS_FILE: printf("  type: file\n"); break;
+	default: return;
+	}
+
+	printf("  file size: %u bytes\n", stat.file_size);
+}
+
+static void do_mufs_cat(const char *s)
+{
+	char data[256];
+	struct mufs_file *file;
+
+	if (!(file = mufs_open(&mufs, s, MUFS_READ))) {
+		fprintf(stderr, "error: unable to open the file\n");
+		return;
+	}
+
+	while (mufs_read(file, data, sizeof data) != 0) {
+		fwrite(data, sizeof *data, sizeof data, stdout);
+	}
+
+	mufs_close(file);
+}
+
+static void do_mufs_append(const char *s)
+{
+	struct mufs_file *file;
+	char *path, *line;
+
+	if (!(path = malloc(strlen(s) + 2)))
+		return;
+
+	strcpy(path, s);
+
+	if (!(line = strchr(path, ' '))) {
+		fprintf(stderr, "usage: append <path> <line>\n");
+		goto err_free_path;
+	}
+
+	*line++ = '\0';
+
+	if (!(file = mufs_open(&mufs, path, MUFS_WRITE | MUFS_APPEND))) {
+		fprintf(stderr, "error: unable to open the file\n");
+		goto err_free_path;
+	}
+
+	strcpy(line + strlen(line), "\n");
+	mufs_write(file, line, strlen(line));
+	mufs_close(file);
+
+err_free_path:
+	free(path);
+}
+
+static void do_mufs_mv(const char *s)
+{
+	char *old, *new;
+
+	if (!(old = strdup(s)))
+		return;
+
+	if (!(new = strchr(old, ' '))) {
+		fprintf(stderr, "usage: mv <old> <new>\n");
+		goto err_free_old;
+	}
+
+	*new++ = '\0';
+
+	if (mufs_rename(&mufs, old, new) < 0) {
+		fprintf(stderr, "error: unable to move the file\n");
+		goto err_free_old;
+	}
+
+err_free_old:
+	free(old);
+}
+
+static void do_mufs_rm(const char *s)
+{
+	if (mufs_unlink(&mufs, s) < 0) {
+		fprintf(stderr, "error: unable to remove the file\n");
+		return;
+	}
+}
+
 static void do_mufs_ls(const char *s)
 {
 	struct mufs_dirent ent;