diff options
Diffstat (limited to 'drivers/block/rbd.c')
| -rw-r--r-- | drivers/block/rbd.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 557cf52f674b..a4725ac1d409 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -51,15 +51,6 @@ #define RBD_DEBUG /* Activate rbd_assert() calls */ /* - * The basic unit of block I/O is a sector. It is interpreted in a - * number of contexts in Linux (blk, bio, genhd), but the default is - * universally 512 bytes. These symbols are just slightly more - * meaningful than the bare numbers they represent. - */ -#define SECTOR_SHIFT 9 -#define SECTOR_SIZE (1ULL << SECTOR_SHIFT) - -/* * Increment the given counter and return its updated value. * If the counter is already 0 it will not be incremented. * If the counter is already at its maximum value returns @@ -4543,6 +4534,9 @@ static ssize_t rbd_config_info_show(struct device *dev, { struct rbd_device *rbd_dev = dev_to_rbd_dev(dev); + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + return sprintf(buf, "%s\n", rbd_dev->config_info); } @@ -4644,6 +4638,9 @@ static ssize_t rbd_image_refresh(struct device *dev, struct rbd_device *rbd_dev = dev_to_rbd_dev(dev); int ret; + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + ret = rbd_dev_refresh(rbd_dev); if (ret) return ret; @@ -6168,6 +6165,9 @@ static ssize_t do_rbd_add(struct bus_type *bus, bool read_only; int rc; + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (!try_module_get(THIS_MODULE)) return -ENODEV; @@ -6320,6 +6320,9 @@ static ssize_t do_rbd_remove(struct bus_type *bus, bool force = false; int ret; + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + dev_id = -1; opt_buf[0] = '\0'; sscanf(buf, "%d %5s", &dev_id, opt_buf); |