summaryrefslogtreecommitdiffstats
path: root/fs/squashfs/xattr.h
blob: c83f5d9ec125c75a79d8578f261fe07988ad2254 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/*
 * Squashfs - a compressed read only filesystem for Linux
 *
 * Copyright (c) 2010
 * Phillip Lougher <phillip@squashfs.org.uk>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * xattr.h
 */

#ifdef CONFIG_SQUASHFS_XATTR
extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64,
		u64 *, int *);
extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
		unsigned int *, unsigned long long *);
#else
static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb,
		u64 start, u64 *xattr_table_start, int *xattr_ids)
{
	ERROR("Xattrs in filesystem, these will be ignored\n");
	*xattr_table_start = start;
	return ERR_PTR(-ENOTSUPP);
}

static inline int squashfs_xattr_lookup(struct super_block *sb,
		unsigned int index, int *count, unsigned int *size,
		unsigned long long *xattr)
{
	return 0;
}
#define squashfs_listxattr NULL
#define generic_getxattr NULL
#define squashfs_xattr_handlers NULL
#endif
pan class="o">*, unsigned long); struct se_device *(*alloc_device)(struct se_hba *, const char *); int (*configure_device)(struct se_device *); void (*destroy_device)(struct se_device *); void (*free_device)(struct se_device *device); ssize_t (*set_configfs_dev_params)(struct se_device *, const char *, ssize_t); ssize_t (*show_configfs_dev_params)(struct se_device *, char *); sense_reason_t (*parse_cdb)(struct se_cmd *cmd); u32 (*get_device_type)(struct se_device *); sector_t (*get_blocks)(struct se_device *); sector_t (*get_alignment_offset_lbas)(struct se_device *); /* lbppbe = logical blocks per physical block exponent. see SBC-3 */ unsigned int (*get_lbppbe)(struct se_device *); unsigned int (*get_io_min)(struct se_device *); unsigned int (*get_io_opt)(struct se_device *); unsigned char *(*get_sense_buffer)(struct se_cmd *); bool (*get_write_cache)(struct se_device *); int (*init_prot)(struct se_device *); int (*format_prot)(struct se_device *); void (*free_prot)(struct se_device *); struct configfs_attribute **tb_dev_attrib_attrs; struct configfs_attribute **tb_dev_action_attrs; }; struct sbc_ops { sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *, u32, enum dma_data_direction); sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd); sense_reason_t (*execute_write_same)(struct se_cmd *cmd); sense_reason_t (*execute_unmap)(struct se_cmd *cmd, sector_t lba, sector_t nolb); }; int transport_backend_register(const struct target_backend_ops *); void target_backend_unregister(const struct target_backend_ops *); void target_complete_cmd(struct se_cmd *, u8); void target_complete_cmd_with_length(struct se_cmd *, u8, int); void transport_copy_sense_to_cmd(struct se_cmd *, unsigned char *); sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size); sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd); sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *); sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *); sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops); u32 sbc_get_device_rev(struct se_device *dev); u32 sbc_get_device_type(struct se_device *dev); sector_t sbc_get_write_same_sectors(struct se_cmd *cmd); void sbc_dif_generate(struct se_cmd *); sense_reason_t sbc_dif_verify(struct se_cmd *, sector_t, unsigned int, unsigned int, struct scatterlist *, int); void sbc_dif_copy_prot(struct se_cmd *, unsigned int, bool, struct scatterlist *, int); void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); int transport_set_vpd_ident(struct t10_vpd *, unsigned char *); extern struct configfs_attribute *sbc_attrib_attrs[]; extern struct configfs_attribute *passthrough_attrib_attrs[]; /* core helpers also used by command snooping in pscsi */ void *transport_kmap_data_sg(struct se_cmd *); void transport_kunmap_data_sg(struct se_cmd *); /* core helpers also used by xcopy during internal command setup */ sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *, struct scatterlist *, u32, struct scatterlist *, u32); bool target_lun_is_rdonly(struct se_cmd *); sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd, sense_reason_t (*exec_cmd)(struct se_cmd *cmd)); bool target_sense_desc_format(struct se_device *dev); sector_t target_to_linux_sector(struct se_device *dev, sector_t lb); bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib, struct request_queue *q); static inline bool target_dev_configured(struct se_device *se_dev) { return !!(se_dev->dev_flags & DF_CONFIGURED); } /* Only use get_unaligned_be24() if reading p - 1 is allowed. */ static inline uint32_t get_unaligned_be24(const uint8_t *const p) { return get_unaligned_be32(p - 1) & 0xffffffU; } #endif /* TARGET_CORE_BACKEND_H */