mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
5e01fdff04
There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
124 lines
2.3 KiB
C
124 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* These structs are used by the system-use-sharing protocol, in which the
|
|
* Rock Ridge extensions are embedded. It is quite possible that other
|
|
* extensions are present on the disk, and this is fine as long as they
|
|
* all use SUSP
|
|
*/
|
|
|
|
struct SU_SP_s {
|
|
__u8 magic[2];
|
|
__u8 skip;
|
|
} __attribute__ ((packed));
|
|
|
|
struct SU_CE_s {
|
|
__u8 extent[8];
|
|
__u8 offset[8];
|
|
__u8 size[8];
|
|
};
|
|
|
|
struct SU_ER_s {
|
|
__u8 len_id;
|
|
__u8 len_des;
|
|
__u8 len_src;
|
|
__u8 ext_ver;
|
|
__u8 data[];
|
|
} __attribute__ ((packed));
|
|
|
|
struct RR_RR_s {
|
|
__u8 flags[1];
|
|
} __attribute__ ((packed));
|
|
|
|
struct RR_PX_s {
|
|
__u8 mode[8];
|
|
__u8 n_links[8];
|
|
__u8 uid[8];
|
|
__u8 gid[8];
|
|
};
|
|
|
|
struct RR_PN_s {
|
|
__u8 dev_high[8];
|
|
__u8 dev_low[8];
|
|
};
|
|
|
|
struct SL_component {
|
|
__u8 flags;
|
|
__u8 len;
|
|
__u8 text[];
|
|
} __attribute__ ((packed));
|
|
|
|
struct RR_SL_s {
|
|
__u8 flags;
|
|
struct SL_component link;
|
|
} __attribute__ ((packed));
|
|
|
|
struct RR_NM_s {
|
|
__u8 flags;
|
|
char name[];
|
|
} __attribute__ ((packed));
|
|
|
|
struct RR_CL_s {
|
|
__u8 location[8];
|
|
};
|
|
|
|
struct RR_PL_s {
|
|
__u8 location[8];
|
|
};
|
|
|
|
struct stamp {
|
|
__u8 time[7]; /* actually 6 unsigned, 1 signed */
|
|
} __attribute__ ((packed));
|
|
|
|
struct RR_TF_s {
|
|
__u8 flags;
|
|
struct stamp times[]; /* Variable number of these beasts */
|
|
} __attribute__ ((packed));
|
|
|
|
/* Linux-specific extension for transparent decompression */
|
|
struct RR_ZF_s {
|
|
__u8 algorithm[2];
|
|
__u8 parms[2];
|
|
__u8 real_size[8];
|
|
};
|
|
|
|
/*
|
|
* These are the bits and their meanings for flags in the TF structure.
|
|
*/
|
|
#define TF_CREATE 1
|
|
#define TF_MODIFY 2
|
|
#define TF_ACCESS 4
|
|
#define TF_ATTRIBUTES 8
|
|
#define TF_BACKUP 16
|
|
#define TF_EXPIRATION 32
|
|
#define TF_EFFECTIVE 64
|
|
#define TF_LONG_FORM 128
|
|
|
|
struct rock_ridge {
|
|
__u8 signature[2];
|
|
__u8 len;
|
|
__u8 version;
|
|
union {
|
|
struct SU_SP_s SP;
|
|
struct SU_CE_s CE;
|
|
struct SU_ER_s ER;
|
|
struct RR_RR_s RR;
|
|
struct RR_PX_s PX;
|
|
struct RR_PN_s PN;
|
|
struct RR_SL_s SL;
|
|
struct RR_NM_s NM;
|
|
struct RR_CL_s CL;
|
|
struct RR_PL_s PL;
|
|
struct RR_TF_s TF;
|
|
struct RR_ZF_s ZF;
|
|
} u;
|
|
};
|
|
|
|
#define RR_PX 1 /* POSIX attributes */
|
|
#define RR_PN 2 /* POSIX devices */
|
|
#define RR_SL 4 /* Symbolic link */
|
|
#define RR_NM 8 /* Alternate Name */
|
|
#define RR_CL 16 /* Child link */
|
|
#define RR_PL 32 /* Parent link */
|
|
#define RR_RE 64 /* Relocation directory */
|
|
#define RR_TF 128 /* Timestamps */
|