disk_info: implement %avail

2 files changed, 7 insertions, 2 deletions

diff --git a/man/i3status.man b/man/i3status.man
index b7f362e..42d2e33 100644
--- a/man/i3status.man
+++ b/man/i3status.man
@@ -125,11 +125,11 @@ best available public IPv6 address on your computer).
 
 === Disk
 
-Gets used, free and total amount of bytes on the given mounted filesystem.
+Gets used, free, available and total amount of bytes on the given mounted filesystem.
 
 *Example order*: +disk /mnt/usbstick+
 
-*Example format*: +%free / %total+
+*Example format*: +%free (%avail)/ %total+
 
 === Run-watch
 
diff --git a/src/print_disk_info.c b/src/print_disk_info.c
index 3bd2bf8..b9ec84b 100644
--- a/src/print_disk_info.c
+++ b/src/print_disk_info.c
@@ -64,5 +64,10 @@ void print_disk_info(const char *path, const char *format) {
                         print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_blocks);
                         walk += strlen("total");
                 }
+
+                if (BEGINS_WITH(walk+1, "avail")) {
+                        print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_bavail);
+                        walk += strlen("avail");
+                }
         }
 }