diff options
Diffstat (limited to 'include/uapi/linux/btrfs.h')
| -rw-r--r-- | include/uapi/linux/btrfs.h | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index 5655e89b962b..b4f0f9531119 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -19,8 +19,14 @@ #ifndef _UAPI_LINUX_BTRFS_H #define _UAPI_LINUX_BTRFS_H + +#ifdef __cplusplus +extern "C" { +#endif + #include <linux/types.h> #include <linux/ioctl.h> +#include <linux/fs.h> #define BTRFS_IOCTL_MAGIC 0x94 #define BTRFS_VOL_NAME_MAX 255 @@ -333,6 +339,12 @@ struct btrfs_ioctl_feature_flags { */ struct btrfs_balance_args { __u64 profiles; + + /* + * usage filter + * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' + * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max + */ union { __u64 usage; struct { @@ -549,7 +561,7 @@ struct btrfs_ioctl_search_header { __u64 offset; __u32 type; __u32 len; -}; +} __attribute__ ((__may_alias__)); #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) /* @@ -562,6 +574,10 @@ struct btrfs_ioctl_search_args { char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; }; +/* + * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes. + * The allocated size of the buffer is set in buf_size. + */ struct btrfs_ioctl_search_args_v2 { struct btrfs_ioctl_search_key key; /* in/out - search parameters */ __u64 buf_size; /* in - size of buffer @@ -570,10 +586,11 @@ struct btrfs_ioctl_search_args_v2 { __u64 buf[]; /* out - found items */ }; +/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */ struct btrfs_ioctl_clone_range_args { - __s64 src_fd; - __u64 src_offset, src_length; - __u64 dest_offset; + __s64 src_fd; + __u64 src_offset, src_length; + __u64 dest_offset; }; /* @@ -677,8 +694,11 @@ struct btrfs_ioctl_logical_ino_args { /* struct btrfs_data_container *inodes; out */ __u64 inodes; }; -/* Return every ref to the extent, not just those containing logical block. - * Requires logical == extent bytenr. */ + +/* + * Return every ref to the extent, not just those containing logical block. + * Requires logical == extent bytenr. + */ #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) enum btrfs_dev_stat_values { @@ -1144,4 +1164,8 @@ enum btrfs_err_code { #define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ struct btrfs_ioctl_encoded_io_args) +#ifdef __cplusplus +} +#endif + #endif /* _UAPI_LINUX_BTRFS_H */ |