Messages in this thread Patch in this message | | | From | Richard Genoud <> | Subject | [PATCH 1/4] sync include/mtd/ubi-user.h with kernel v3.6-rc1 | Date | Fri, 17 Aug 2012 16:57:19 +0200 |
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Signed-off-by: Richard Genoud <richard.genoud@gmail.com> --- include/mtd/ubi-user.h | 138 +++++++++++++++++++++++------------------------- 1 files changed, 67 insertions(+), 71 deletions(-)
diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index 296efae..123951f 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -1,5 +1,5 @@ /* - * Copyright (c) International Business Machines Corp., 2006 + * Copyright © International Business Machines Corp., 2006 * * 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 @@ -21,6 +21,8 @@ #ifndef __UBI_USER_H__ #define __UBI_USER_H__ +#include <linux/types.h> + /* * UBI device creation (the same as MTD device attachment) * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -129,7 +131,7 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~ * * To set an UBI volume property the %UBI_IOCSETPROP ioctl command should be - * used. A pointer to a &struct ubi_set_prop_req object is expected to be + * used. A pointer to a &struct ubi_set_vol_prop_req object is expected to be * passed. The object describes which property should be set, and to which value * it should be set. */ @@ -152,7 +154,7 @@ /* Create an UBI volume */ #define UBI_IOCMKVOL _IOW(UBI_IOC_MAGIC, 0, struct ubi_mkvol_req) /* Remove an UBI volume */ -#define UBI_IOCRMVOL _IOW(UBI_IOC_MAGIC, 1, int32_t) +#define UBI_IOCRMVOL _IOW(UBI_IOC_MAGIC, 1, __s32) /* Re-size an UBI volume */ #define UBI_IOCRSVOL _IOW(UBI_IOC_MAGIC, 2, struct ubi_rsvol_req) /* Re-name volumes */ @@ -165,26 +167,27 @@ /* Attach an MTD device */ #define UBI_IOCATT _IOW(UBI_CTRL_IOC_MAGIC, 64, struct ubi_attach_req) /* Detach an MTD device */ -#define UBI_IOCDET _IOW(UBI_CTRL_IOC_MAGIC, 65, int32_t) +#define UBI_IOCDET _IOW(UBI_CTRL_IOC_MAGIC, 65, __s32) /* ioctl commands of UBI volume character devices */ #define UBI_VOL_IOC_MAGIC 'O' /* Start UBI volume update */ -#define UBI_IOCVOLUP _IOW(UBI_VOL_IOC_MAGIC, 0, int64_t) +#define UBI_IOCVOLUP _IOW(UBI_VOL_IOC_MAGIC, 0, __s64) /* LEB erasure command, used for debugging, disabled by default */ -#define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, int32_t) +#define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, __s32) /* Atomic LEB change command */ -#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t) +#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, __s32) /* Map LEB command */ #define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) /* Unmap LEB command */ -#define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t) +#define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, __s32) /* Check if LEB is mapped command */ -#define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t) +#define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, __s32) /* Set an UBI volume property */ -#define UBI_IOCSETPROP _IOW(UBI_VOL_IOC_MAGIC, 6, struct ubi_set_prop_req) +#define UBI_IOCSETVOLPROP _IOW(UBI_VOL_IOC_MAGIC, 6, \ + struct ubi_set_vol_prop_req) /* Maximum MTD device name length supported by UBI */ #define MAX_UBI_MTD_NAME_LEN 127 @@ -193,23 +196,6 @@ #define UBI_MAX_RNVOL 32 /* - * UBI data type hint constants. - * - * UBI_LONGTERM: long-term data - * UBI_SHORTTERM: short-term data - * UBI_UNKNOWN: data persistence is unknown - * - * These constants are used when data is written to UBI volumes in order to - * help the UBI wear-leveling unit to find more appropriate physical - * eraseblocks. - */ -enum { - UBI_LONGTERM = 1, - UBI_SHORTTERM = 2, - UBI_UNKNOWN = 3, -}; - -/* * UBI volume type constants. * * @UBI_DYNAMIC_VOLUME: dynamic volume @@ -221,13 +207,14 @@ enum { }; /* - * UBI set property ioctl constants + * UBI set volume property ioctl constants. * - * @UBI_PROP_DIRECT_WRITE: allow / disallow user to directly write and - * erase individual eraseblocks on dynamic volumes + * @UBI_VOL_PROP_DIRECT_WRITE: allow (any non-zero value) or disallow (value 0) + * user to directly write and erase individual + * eraseblocks on dynamic volumes */ enum { - UBI_PROP_DIRECT_WRITE = 1, + UBI_VOL_PROP_DIRECT_WRITE = 1, }; /** @@ -260,10 +247,10 @@ enum { * sub-page of the first page and add needed padding. */ struct ubi_attach_req { - int32_t ubi_num; - int32_t mtd_num; - int32_t vid_hdr_offset; - int8_t padding[12]; + __s32 ubi_num; + __s32 mtd_num; + __s32 vid_hdr_offset; + __s8 padding[12]; }; /** @@ -298,15 +285,15 @@ struct ubi_attach_req { * BLOBs, without caring about how to properly align them. */ struct ubi_mkvol_req { - int32_t vol_id; - int32_t alignment; - int64_t bytes; - int8_t vol_type; - int8_t padding1; - int16_t name_len; - int8_t padding2[4]; + __s32 vol_id; + __s32 alignment; + __s64 bytes; + __s8 vol_type; + __s8 padding1; + __s16 name_len; + __s8 padding2[4]; char name[UBI_MAX_VOLUME_NAME + 1]; -} __attribute__ ((packed)); +} __attribute__((packed)); /** * struct ubi_rsvol_req - a data structure used in volume re-size requests. @@ -320,9 +307,9 @@ struct ubi_mkvol_req { * zero number of bytes). */ struct ubi_rsvol_req { - int64_t bytes; - int32_t vol_id; -} __attribute__ ((packed)); + __s64 bytes; + __s32 vol_id; +} __attribute__((packed)); /** * struct ubi_rnvol_req - volumes re-name request. @@ -356,55 +343,64 @@ struct ubi_rsvol_req { * re-name request. */ struct ubi_rnvol_req { - int32_t count; - int8_t padding1[12]; + __s32 count; + __s8 padding1[12]; struct { - int32_t vol_id; - int16_t name_len; - int8_t padding2[2]; + __s32 vol_id; + __s16 name_len; + __s8 padding2[2]; char name[UBI_MAX_VOLUME_NAME + 1]; } ents[UBI_MAX_RNVOL]; -} __attribute__ ((packed)); +} __attribute__((packed)); /** * struct ubi_leb_change_req - a data structure used in atomic LEB change * requests. * @lnum: logical eraseblock number to change * @bytes: how many bytes will be written to the logical eraseblock - * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN) + * @dtype: pass "3" for better compatibility with old kernels * @padding: reserved for future, not used, has to be zeroed + * + * The @dtype field used to inform UBI about what kind of data will be written + * to the LEB: long term (value 1), short term (value 2), unknown (value 3). + * UBI tried to pick a PEB with lower erase counter for short term data and a + * PEB with higher erase counter for long term data. But this was not really + * used because users usually do not know this and could easily mislead UBI. We + * removed this feature in May 2012. UBI currently just ignores the @dtype + * field. But for better compatibility with older kernels it is recommended to + * set @dtype to 3 (unknown). */ struct ubi_leb_change_req { - int32_t lnum; - int32_t bytes; - int8_t dtype; - int8_t padding[7]; -} __attribute__ ((packed)); + __s32 lnum; + __s32 bytes; + __s8 dtype; /* obsolete, do not use! */ + __s8 padding[7]; +} __attribute__((packed)); /** * struct ubi_map_req - a data structure used in map LEB requests. + * @dtype: pass "3" for better compatibility with old kernels * @lnum: logical eraseblock number to unmap - * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN) * @padding: reserved for future, not used, has to be zeroed */ struct ubi_map_req { - int32_t lnum; - int8_t dtype; - int8_t padding[3]; -} __attribute__ ((packed)); + __s32 lnum; + __s8 dtype; /* obsolete, do not use! */ + __s8 padding[3]; +} __attribute__((packed)); /** - * struct ubi_set_prop_req - a data structure used to set an ubi volume - * property. - * @property: property to set (%UBI_PROP_DIRECT_WRITE) + * struct ubi_set_vol_prop_req - a data structure used to set an UBI volume + * property. + * @property: property to set (%UBI_VOL_PROP_DIRECT_WRITE) * @padding: reserved for future, not used, has to be zeroed * @value: value to set */ -struct ubi_set_prop_req { - uint8_t property; - uint8_t padding[7]; - uint64_t value; -} __attribute__ ((packed)); +struct ubi_set_vol_prop_req { + __u8 property; + __u8 padding[7]; + __u64 value; +} __attribute__((packed)); #endif /* __UBI_USER_H__ */ -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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