add disk ioctl

diff --git a/btrfsctl.c b/btrfsctl.c
index 3e5d695..01fd95a 100644 (file)
--- a/btrfsctl.c
+++ b/btrfsctl.c
@@ -15,6 +15,7 @@
 #ifdef __CHECKER__
 #define BLKGETSIZE64 0
 #define BTRFS_IOC_SNAP_CREATE 0
+#define BTRFS_IOC_ADD_DISK 0
 #define BTRFS_VOL_NAME_MAX 255
 struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
 static inline int ioctl(int fd, int define, void *arg) { return 0; }
@@ -36,6 +37,7 @@ int main(int ac, char **av)
        int i;
        struct stat st;
        DIR *dirstream;
+       unsigned long command;
 
        for (i = 1; i < ac - 1; i++) {
                if (strcmp(av[i], "-s") == 0) {
@@ -48,6 +50,19 @@ int main(int ac, char **av)
                                fprintf(stderr, "snapshot name is too long\n");
                                exit(1);
                        }
+                       command = BTRFS_IOC_SNAP_CREATE;
+               }
+               if (strcmp(av[i], "-a") == 0) {
+                       if (i + 1 >= ac - 1) {
+                               fprintf(stderr, "-a requires an arg");
+                               print_usage();
+                       }
+                       name = av[i + 1];
+                       if (strlen(name) >= BTRFS_VOL_NAME_MAX) {
+                               fprintf(stderr, "device name is too long\n");
+                               exit(1);
+                       }
+                       command = BTRFS_IOC_ADD_DISK;
                }
        }
        fname = av[ac - 1];
@@ -71,7 +86,7 @@ printf("fname is %s\n", fname);
                exit(1);
        }
        strcpy(args.name, name);
-       ret = ioctl(fd, BTRFS_IOC_SNAP_CREATE, &args);
+       ret = ioctl(fd, command, &args);
        printf("ioctl returns %d\n", ret);
        return 0;
 }

diff --git a/ioctl.h b/ioctl.h
index 201fb32..497fadd 100644 (file)
--- a/ioctl.h
+++ b/ioctl.h
@@ -10,4 +10,6 @@ struct btrfs_ioctl_vol_args {
 
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
                                   struct btrfs_ioctl_vol_args)
+#define BTRFS_IOC_ADD_DISK _IOW(BTRFS_IOCTL_MAGIC, 2, \
+                                  struct btrfs_ioctl_vol_args)
 #endif