1 files changed, 85 insertions, 0 deletions
diff --git a/package/toolbox/src/src/df.c b/package/toolbox/src/src/df.c
new file mode 100644
index 000000000..8cff0c8c2
--- /dev/null
+++ b/package/toolbox/src/src/df.c
@@ -0,0 +1,85 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/statfs.h>
+
+static int ok = EXIT_SUCCESS;
+
+static void printsize(long long n)
+{
+    char unit = 'K';
+    long long t;
+
+    n *= 10;
+
+    if (n > 1024*1024*10) {
+        n /= 1024;
+        unit = 'M';
+    }
+
+    if (n > 1024*1024*10) {
+        n /= 1024;
+        unit = 'G';
+    }
+
+    t = (n + 512) / 1024;
+    printf("%4lld.%1lld%c", t/10, t%10, unit);
+}
+
+static void df(char *s, int always) {
+    struct statfs st;
+
+    if (statfs(s, &st) < 0) {
+        fprintf(stderr, "%s: %s\n", s, strerror(errno));
+        ok = EXIT_FAILURE;
+    } else {
+        if (st.f_blocks == 0 && !always)
+            return;        
+        printf("%-20s  ", s);
+        printsize((long long)st.f_blocks * (long long)st.f_bsize);
+        printf("  ");
+        printsize((long long)(st.f_blocks - (long long)st.f_bfree) * st.f_bsize);
+        printf("  ");
+        printsize((long long)st.f_bfree * (long long)st.f_bsize);
+        printf("   %d\n", (int) st.f_bsize);
+    }
+}
+
+int main(int argc, char *argv[]) {
+    printf("Filesystem               Size     Used     Free   Blksize\n");
+    if (argc == 1) {
+        char s[2000];
+        FILE *f = fopen("/proc/mounts", "r");
+
+        while (fgets(s, 2000, f)) {
+            char *c, *e = s;
+
+            for (c = s; *c; c++) {
+                if (*c == ' ') {
+                    e = c + 1;
+                    break;
+                }
+            }
+
+            for (c = e; *c; c++) {
+                if (*c == ' ') {
+                    *c = '\0';
+                    break;
+                }
+            }
+
+            df(e, 0);
+        }
+
+        fclose(f);
+    } else {
+        int i;
+
+        for (i = 1; i < argc; i++) {
+            df(argv[i], 1);
+        }
+    }
+
+    exit(ok);
+}