Initial release

src/df.c

@@ -0,0 +1,72 @@
+/* df.c */
+
+
+
+#include <sys/statvfs.h>
+#include <unistd.h>
+#include <stdio.h>
+
+
+/* df */
+static int _df_error(char const * message, int ret);
+static int _df_do(char const * file);
+static int _df(int filec, char * filev[])
+{
+	int ret = 0;
+	int i;
+
+	/* FIXME */
+	printf("%s", "Filesystem 512-blocks       Used  Available Capacity Mounted on\n");
+	for(i = 0; i < filec; i++)
+		ret |= _df_do(filev[i]);
+	return ret;
+}
+
+static int _df_error(char const * message, int ret)
+{
+	fprintf(stderr, "%s", "df: ");
+	perror(message);
+	return ret;
+}
+
+static int _df_do(char const * file)
+{
+	struct statvfs f;
+
+	if(statvfs(file, &f) != 0)
+		return _df_error(file, 1);
+	printf("%10s %10d %10d %10d %7d%% %s\n", "", f.f_blocks,
+			f.f_blocks-f.f_bfree, f.f_bavail,
+			((f.f_blocks-f.f_bfree)*100)/((f.f_blocks-f.f_bfree)
+						      +f.f_bavail), "");
+	return 0;
+}
+
+
+/* usage */
+static int _usage(void)
+{
+	fprintf(stderr, "%s", "Usage: df [-k][-P|-T][file...]\n");
+	return 1;
+}
+
+
+/* main */
+int main(int argc, char * argv[])
+{
+	int o;
+
+	while((o = getopt(argc, argv, "kPT")) != -1)
+		switch(o)
+		{
+			case 'k':
+				break;
+			case 'P':
+				break;
+			case 'T':
+				break;
+			default:
+				return _usage();
+		}
+	return _df(argc - optind, &argv[optind]) == 0 ? 0 : 2;
+}