diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_attr.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_attr.h | 114 |
1 files changed, 23 insertions, 91 deletions
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h index 4243b2272642..0d2d05908537 100644 --- a/fs/xfs/libxfs/xfs_attr.h +++ b/fs/xfs/libxfs/xfs_attr.h @@ -21,39 +21,6 @@ struct xfs_attr_list_context; * as possible so as to fit into the literal area of the inode. */ -/*======================================================================== - * External interfaces - *========================================================================*/ - - -#define ATTR_DONTFOLLOW 0x0001 /* -- ignored, from IRIX -- */ -#define ATTR_ROOT 0x0002 /* use attrs in root (trusted) namespace */ -#define ATTR_TRUST 0x0004 /* -- unused, from IRIX -- */ -#define ATTR_SECURE 0x0008 /* use attrs in security namespace */ -#define ATTR_CREATE 0x0010 /* pure create: fail if attr already exists */ -#define ATTR_REPLACE 0x0020 /* pure set: fail if attr does not exist */ - -#define ATTR_KERNOTIME 0x1000 /* [kernel] don't update inode timestamps */ -#define ATTR_KERNOVAL 0x2000 /* [kernel] get attr size only, not value */ - -#define ATTR_INCOMPLETE 0x4000 /* [kernel] return INCOMPLETE attr keys */ -#define ATTR_ALLOC 0x8000 /* [kernel] allocate xattr buffer on demand */ - -#define ATTR_KERNEL_FLAGS \ - (ATTR_KERNOTIME | ATTR_KERNOVAL | ATTR_INCOMPLETE | ATTR_ALLOC) - -#define XFS_ATTR_FLAGS \ - { ATTR_DONTFOLLOW, "DONTFOLLOW" }, \ - { ATTR_ROOT, "ROOT" }, \ - { ATTR_TRUST, "TRUST" }, \ - { ATTR_SECURE, "SECURE" }, \ - { ATTR_CREATE, "CREATE" }, \ - { ATTR_REPLACE, "REPLACE" }, \ - { ATTR_KERNOTIME, "KERNOTIME" }, \ - { ATTR_KERNOVAL, "KERNOVAL" }, \ - { ATTR_INCOMPLETE, "INCOMPLETE" }, \ - { ATTR_ALLOC, "ALLOC" } - /* * The maximum size (into the kernel or returned from the kernel) of an * attribute value or the buffer used for an attr_list() call. Larger @@ -62,45 +29,16 @@ struct xfs_attr_list_context; #define ATTR_MAX_VALUELEN (64*1024) /* max length of a value */ /* - * Define how lists of attribute names are returned to the user from - * the attr_list() call. A large, 32bit aligned, buffer is passed in - * along with its size. We put an array of offsets at the top that each - * reference an attrlist_ent_t and pack the attrlist_ent_t's at the bottom. - */ -typedef struct attrlist { - __s32 al_count; /* number of entries in attrlist */ - __s32 al_more; /* T/F: more attrs (do call again) */ - __s32 al_offset[1]; /* byte offsets of attrs [var-sized] */ -} attrlist_t; - -/* - * Show the interesting info about one attribute. This is what the - * al_offset[i] entry points to. - */ -typedef struct attrlist_ent { /* data from attr_list() */ - __u32 a_valuelen; /* number bytes in value of attr */ - char a_name[1]; /* attr name (NULL terminated) */ -} attrlist_ent_t; - -/* - * Given a pointer to the (char*) buffer containing the attr_list() result, - * and an index, return a pointer to the indicated attribute in the buffer. - */ -#define ATTR_ENTRY(buffer, index) \ - ((attrlist_ent_t *) \ - &((char *)buffer)[ ((attrlist_t *)(buffer))->al_offset[index] ]) - -/* * Kernel-internal version of the attrlist cursor. */ -typedef struct attrlist_cursor_kern { +struct xfs_attrlist_cursor_kern { __u32 hashval; /* hash value of next entry to add */ __u32 blkno; /* block containing entry (suggestion) */ __u32 offset; /* offset in list of equal-hashvals */ __u16 pad1; /* padding to match user-level */ __u8 pad2; /* padding to match user-level */ __u8 initted; /* T/F: cursor has been initialized */ -} attrlist_cursor_kern_t; +}; /*======================================================================== @@ -112,27 +50,28 @@ typedef struct attrlist_cursor_kern { typedef void (*put_listent_func_t)(struct xfs_attr_list_context *, int, unsigned char *, int, int); -typedef struct xfs_attr_list_context { - struct xfs_trans *tp; - struct xfs_inode *dp; /* inode */ - struct attrlist_cursor_kern *cursor; /* position in list */ - char *alist; /* output buffer */ +struct xfs_attr_list_context { + struct xfs_trans *tp; + struct xfs_inode *dp; /* inode */ + struct xfs_attrlist_cursor_kern cursor; /* position in list */ + void *buffer; /* output buffer */ /* * Abort attribute list iteration if non-zero. Can be used to pass * error values to the xfs_attr_list caller. */ - int seen_enough; + int seen_enough; + bool allow_incomplete; - ssize_t count; /* num used entries */ - int dupcnt; /* count dup hashvals seen */ - int bufsize; /* total buffer size */ - int firstu; /* first used byte in buffer */ - int flags; /* from VOP call */ - int resynch; /* T/F: resynch with cursor */ - put_listent_func_t put_listent; /* list output fmt function */ - int index; /* index into output buffer */ -} xfs_attr_list_context_t; + ssize_t count; /* num used entries */ + int dupcnt; /* count dup hashvals seen */ + int bufsize; /* total buffer size */ + int firstu; /* first used byte in buffer */ + unsigned int attr_filter; /* XFS_ATTR_{ROOT,SECURE} */ + int resynch; /* T/F: resynch with cursor */ + put_listent_func_t put_listent; /* list output fmt function */ + int index; /* index into output buffer */ +}; /*======================================================================== @@ -143,21 +82,14 @@ typedef struct xfs_attr_list_context { * Overall external interface routines. */ int xfs_attr_inactive(struct xfs_inode *dp); -int xfs_attr_list_int_ilocked(struct xfs_attr_list_context *); -int xfs_attr_list_int(struct xfs_attr_list_context *); +int xfs_attr_list_ilocked(struct xfs_attr_list_context *); +int xfs_attr_list(struct xfs_attr_list_context *); int xfs_inode_hasattr(struct xfs_inode *ip); -int xfs_attr_get_ilocked(struct xfs_inode *ip, struct xfs_da_args *args); -int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name, - size_t namelen, unsigned char **value, int *valuelenp, - int flags); -int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, - size_t namelen, unsigned char *value, int valuelen, int flags); +int xfs_attr_get_ilocked(struct xfs_da_args *args); +int xfs_attr_get(struct xfs_da_args *args); +int xfs_attr_set(struct xfs_da_args *args); int xfs_attr_set_args(struct xfs_da_args *args); -int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, - size_t namelen, int flags); int xfs_attr_remove_args(struct xfs_da_args *args); -int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, - int flags, struct attrlist_cursor_kern *cursor); bool xfs_attr_namecheck(const void *name, size_t length); #endif /* __XFS_ATTR_H__ */ |