auto import from //depot/cupcake/@135843

1 files changed, 63 insertions, 0 deletions

diff --git a/toolbox/df.c b/toolbox/df.c
new file mode 100644
index 000000000..90476bdc8
--- /dev/null
+++ b/toolbox/df.c
@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/statfs.h>
+
+static int ok = EXIT_SUCCESS;
+
+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("%s: %lldK total, %lldK used, %lldK available (block size %d)\n",
+               s,
+               ((long long)st.f_blocks * (long long)st.f_bsize) / 1024,
+               ((long long)(st.f_blocks - (long long)st.f_bfree) * st.f_bsize) / 1024,
+               ((long long)st.f_bfree * (long long)st.f_bsize) / 1024,
+               (int) st.f_bsize);
+    }
+}
+
+int df_main(int argc, char *argv[]) {
+    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);
+}