include/uapi/linux/coda.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/coda.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/coda.h
Extension
.h
Size
18393 bytes
Lines
762
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct venus_dirent {
        u_int32_t d_fileno;		/* file number of entry */
        u_int16_t d_reclen;		/* length of this record */
        u_int8_t  d_type;			/* file type, see below */
        u_int8_t  d_namlen;		/* length of string in d_name */
        char	  d_name[CODA_MAXNAMLEN + 1];/* name must be no longer than this */
};
#undef DIRSIZ
#define DIRSIZ(dp)      ((sizeof (struct venus_dirent) - (CODA_MAXNAMLEN+1)) + \
                         (((dp)->d_namlen+1 + 3) &~ 3))

/*
 * File types
 */
#define	CDT_UNKNOWN	 0
#define	CDT_FIFO	 1
#define	CDT_CHR		 2
#define	CDT_DIR		 4
#define	CDT_BLK		 6
#define	CDT_REG		 8
#define	CDT_LNK		10
#define	CDT_SOCK	12
#define	CDT_WHT		14

/*
 * Convert between stat structure types and directory types.
 */
#define	IFTOCDT(mode)	(((mode) & 0170000) >> 12)
#define	CDTTOIF(dirtype)	((dirtype) << 12)

#endif

#ifndef _VUID_T_
#define _VUID_T_
typedef u_int32_t vuid_t;
typedef u_int32_t vgid_t;
#endif /*_VUID_T_ */

struct CodaFid {
	u_int32_t opaque[4];
};

#define coda_f2i(fid)\
	(fid ? (fid->opaque[3] ^ (fid->opaque[2]<<10) ^ (fid->opaque[1]<<20) ^ fid->opaque[0]) : 0)

#ifndef _VENUS_VATTR_T_
#define _VENUS_VATTR_T_
/*
 * Vnode types.  VNON means no type.
 */
enum coda_vtype	{ C_VNON, C_VREG, C_VDIR, C_VBLK, C_VCHR, C_VLNK, C_VSOCK, C_VFIFO, C_VBAD };

struct coda_timespec {
	int64_t		tv_sec;		/* seconds */
	long		tv_nsec;	/* nanoseconds */
};

struct coda_vattr {
	long     	va_type;	/* vnode type (for create) */
	u_short		va_mode;	/* files access mode and type */
	short		va_nlink;	/* number of references to file */
	vuid_t		va_uid;		/* owner user id */
	vgid_t		va_gid;		/* owner group id */
	long		va_fileid;	/* file id */
	u_quad_t	va_size;	/* file size in bytes */
	long		va_blocksize;	/* blocksize preferred for i/o */
	struct coda_timespec va_atime;	/* time of last access */
	struct coda_timespec va_mtime;	/* time of last modification */
	struct coda_timespec va_ctime;	/* time file changed */
	u_long		va_gen;		/* generation number of file */
	u_long		va_flags;	/* flags defined for file */
	cdev_t	        va_rdev;	/* device special file represents */
	u_quad_t	va_bytes;	/* bytes of disk space held by file */
	u_quad_t	va_filerev;	/* file modification number */
};

#endif 

/* structure used by CODA_STATFS for getting cache information from venus */
struct coda_statfs {
    int32_t f_blocks;
    int32_t f_bfree;
    int32_t f_bavail;
    int32_t f_files;
    int32_t f_ffree;
};

/*
 * Kernel <--> Venus communications.
 */

Annotation

Implementation Notes