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894ac432b4
linux_dsm_epyc7002/fs/orangefs/protocol.h
Martin Brandenburg 894ac432b4 Orangefs: Clean up error decoding. 
Errors from the server need to be decoded. A bunch of code was imported from
the server to do this but much of it is convoluted and not even needed. The
result is better but still as convoluted as required by the protocol.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 12:04:46 -04:00

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#include <linux/types.h>
#include <linux/spinlock_types.h>
#include <linux/slab.h>
#include <linux/ioctl.h>
extern struct client_debug_mask *cdm_array;
extern char *debug_help_string;
extern int help_string_initialized;
extern struct dentry *debug_dir;
extern struct dentry *help_file_dentry;
extern struct dentry *client_debug_dentry;
extern const struct file_operations debug_help_fops;
extern int client_all_index;
extern int client_verbose_index;
extern int cdm_element_count;
#define DEBUG_HELP_STRING_SIZE 4096
#define HELP_STRING_UNINITIALIZED \
"Client Debug Keywords are unknown until the first time\n" \
"the client is started after boot.\n"
#define ORANGEFS_KMOD_DEBUG_HELP_FILE "debug-help"
#define ORANGEFS_KMOD_DEBUG_FILE "kernel-debug"
#define ORANGEFS_CLIENT_DEBUG_FILE "client-debug"
#define PVFS2_VERBOSE "verbose"
#define PVFS2_ALL "all"
/* pvfs2-config.h ***********************************************************/
#define PVFS2_VERSION_MAJOR 2
#define PVFS2_VERSION_MINOR 9
#define PVFS2_VERSION_SUB 0
/* khandle stuff ***********************************************************/
/*
* The 2.9 core will put 64 bit handles in here like this:
* 1234 0000 0000 5678
* The 3.0 and beyond cores will put 128 bit handles in here like this:
* 1234 5678 90AB CDEF
* The kernel module will always use the first four bytes and
* the last four bytes as an inum.
*/
struct pvfs2_khandle {
unsigned char u[16];
} __aligned(8);
/*
* kernel version of an object ref.
*/
struct pvfs2_object_kref {
struct pvfs2_khandle khandle;
__s32 fs_id;
__s32 __pad1;
};
/*
* compare 2 khandles assumes little endian thus from large address to
* small address
*/
static inline int PVFS_khandle_cmp(const struct pvfs2_khandle *kh1,
const struct pvfs2_khandle *kh2)
{
int i;
for (i = 15; i >= 0; i--) {
if (kh1->u[i] > kh2->u[i])
return 1;
if (kh1->u[i] < kh2->u[i])
return -1;
}
return 0;
}
static inline void PVFS_khandle_to(const struct pvfs2_khandle *kh,
void *p, int size)
{
memset(p, 0, size);
memcpy(p, kh->u, 16);
}
static inline void PVFS_khandle_from(struct pvfs2_khandle *kh,
void *p, int size)
{
memset(kh, 0, 16);
memcpy(kh->u, p, 16);
}
/* pvfs2-types.h ************************************************************/
typedef __u32 PVFS_uid;
typedef __u32 PVFS_gid;
typedef __s32 PVFS_fs_id;
typedef __u32 PVFS_permissions;
typedef __u64 PVFS_time;
typedef __s64 PVFS_size;
typedef __u64 PVFS_flags;
typedef __u64 PVFS_ds_position;
typedef __s32 PVFS_error;
typedef __s64 PVFS_offset;
#define PVFS2_SUPER_MAGIC 0x20030528
/* PVFS2 error codes are a signed 32-bit integer. Error codes are negative, but
* the sign is stripped before decoding. */
/* Bit 31 is not used since it is the sign. */
/* Bit 30 specifies that this is a PVFS2 error. A PVFS2 error is either an
* encoded errno value or a PVFS2 protocol error. */
#define PVFS_ERROR_BIT (1 << 30)
/* Bit 29 specifies that this is a PVFS2 protocol error and not an encoded
* errno value. */
#define PVFS_NON_ERRNO_ERROR_BIT (1 << 29)
/* Bits 9, 8, and 7 specify the error class, which encodes the section of
* server code the error originated in for logging purposes. It is not used
* in the kernel except to be masked out. */
#define PVFS_ERROR_CLASS_BITS 0x380
/* Bits 6 - 0 are reserved for the actual error code. */
#define PVFS_ERROR_NUMBER_BITS 0x7f
/* Encoded errno values are decoded by PINT_errno_mapping in pvfs2-utils.c. */
/* Our own PVFS2 protocol error codes. */
#define PVFS_ECANCEL (1|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_EDEVINIT (2|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_EDETAIL (3|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_EHOSTNTFD (4|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_EADDRNTFD (5|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_ENORECVR (6|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_ETRYAGAIN (7|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_ENOTPVFS (8|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
#define PVFS_ESECURITY (9|PVFS_NON_ERRNO_ERROR_BIT|PVFS_ERROR_BIT)
/* permission bits */
#define PVFS_O_EXECUTE (1 << 0)
#define PVFS_O_WRITE (1 << 1)
#define PVFS_O_READ (1 << 2)
#define PVFS_G_EXECUTE (1 << 3)
#define PVFS_G_WRITE (1 << 4)
#define PVFS_G_READ (1 << 5)
#define PVFS_U_EXECUTE (1 << 6)
#define PVFS_U_WRITE (1 << 7)
#define PVFS_U_READ (1 << 8)
/* no PVFS_U_VTX (sticky bit) */
#define PVFS_G_SGID (1 << 10)
#define PVFS_U_SUID (1 << 11)
/* definition taken from stdint.h */
#define INT32_MAX (2147483647)
#define PVFS_ITERATE_START (INT32_MAX - 1)
#define PVFS_ITERATE_END (INT32_MAX - 2)
#define PVFS_ITERATE_NEXT (INT32_MAX - 3)
#define PVFS_READDIR_START PVFS_ITERATE_START
#define PVFS_READDIR_END PVFS_ITERATE_END
#define PVFS_IMMUTABLE_FL FS_IMMUTABLE_FL
#define PVFS_APPEND_FL FS_APPEND_FL
#define PVFS_NOATIME_FL FS_NOATIME_FL
#define PVFS_MIRROR_FL 0x01000000ULL
#define PVFS_O_EXECUTE (1 << 0)
#define PVFS_FS_ID_NULL ((__s32)0)
#define PVFS_ATTR_SYS_UID (1 << 0)
#define PVFS_ATTR_SYS_GID (1 << 1)
#define PVFS_ATTR_SYS_PERM (1 << 2)
#define PVFS_ATTR_SYS_ATIME (1 << 3)
#define PVFS_ATTR_SYS_CTIME (1 << 4)
#define PVFS_ATTR_SYS_MTIME (1 << 5)
#define PVFS_ATTR_SYS_TYPE (1 << 6)
#define PVFS_ATTR_SYS_ATIME_SET (1 << 7)
#define PVFS_ATTR_SYS_MTIME_SET (1 << 8)
#define PVFS_ATTR_SYS_SIZE (1 << 20)
#define PVFS_ATTR_SYS_LNK_TARGET (1 << 24)
#define PVFS_ATTR_SYS_DFILE_COUNT (1 << 25)
#define PVFS_ATTR_SYS_DIRENT_COUNT (1 << 26)
#define PVFS_ATTR_SYS_BLKSIZE (1 << 28)
#define PVFS_ATTR_SYS_MIRROR_COPIES_COUNT (1 << 29)
#define PVFS_ATTR_SYS_COMMON_ALL \
(PVFS_ATTR_SYS_UID | \
PVFS_ATTR_SYS_GID | \
PVFS_ATTR_SYS_PERM | \
PVFS_ATTR_SYS_ATIME | \
PVFS_ATTR_SYS_CTIME | \
PVFS_ATTR_SYS_MTIME | \
PVFS_ATTR_SYS_TYPE)
#define PVFS_ATTR_SYS_ALL_SETABLE \
(PVFS_ATTR_SYS_COMMON_ALL-PVFS_ATTR_SYS_TYPE)
#define PVFS_ATTR_SYS_ALL_NOHINT \
(PVFS_ATTR_SYS_COMMON_ALL | \
PVFS_ATTR_SYS_SIZE | \
PVFS_ATTR_SYS_LNK_TARGET | \
PVFS_ATTR_SYS_DFILE_COUNT | \
PVFS_ATTR_SYS_MIRROR_COPIES_COUNT | \
PVFS_ATTR_SYS_DIRENT_COUNT | \
PVFS_ATTR_SYS_BLKSIZE)
#define PVFS_XATTR_REPLACE 0x2
#define PVFS_XATTR_CREATE 0x1
#define PVFS_MAX_SERVER_ADDR_LEN 256
#define PVFS_NAME_MAX 256
/*
* max extended attribute name len as imposed by the VFS and exploited for the
* upcall request types.
* NOTE: Please retain them as multiples of 8 even if you wish to change them
* This is *NECESSARY* for supporting 32 bit user-space binaries on a 64-bit
* kernel. Due to implementation within DBPF, this really needs to be
* PVFS_NAME_MAX, which it was the same value as, but no reason to let it
* break if that changes in the future.
*/
#define PVFS_MAX_XATTR_NAMELEN PVFS_NAME_MAX /* Not the same as
* XATTR_NAME_MAX defined
* by <linux/xattr.h>
*/
#define PVFS_MAX_XATTR_VALUELEN 8192 /* Not the same as XATTR_SIZE_MAX
* defined by <linux/xattr.h>
*/
#define PVFS_MAX_XATTR_LISTLEN 16 /* Not the same as XATTR_LIST_MAX
* defined by <linux/xattr.h>
*/
/*
* PVFS I/O operation types, used in both system and server interfaces.
*/
enum PVFS_io_type {
PVFS_IO_READ = 1,
PVFS_IO_WRITE = 2
};
/*
* If this enum is modified the server parameters related to the precreate pool
* batch and low threshold sizes may need to be modified to reflect this
* change.
*/
enum pvfs2_ds_type {
PVFS_TYPE_NONE = 0,
PVFS_TYPE_METAFILE = (1 << 0),
PVFS_TYPE_DATAFILE = (1 << 1),
PVFS_TYPE_DIRECTORY = (1 << 2),
PVFS_TYPE_SYMLINK = (1 << 3),
PVFS_TYPE_DIRDATA = (1 << 4),
PVFS_TYPE_INTERNAL = (1 << 5) /* for the server's private use */
};
/*
* PVFS_certificate simply stores a buffer with the buffer size.
* The buffer can be converted to an OpenSSL X509 struct for use.
*/
struct PVFS_certificate {
__u32 buf_size;
unsigned char *buf;
};
/*
* A credential identifies a user and is signed by the client/user
* private key.
*/
struct PVFS_credential {
__u32 userid; /* user id */
__u32 num_groups; /* length of group_array */
__u32 *group_array; /* groups for which the user is a member */
char *issuer; /* alias of the issuing server */
__u64 timeout; /* seconds after epoch to time out */
__u32 sig_size; /* length of the signature in bytes */
unsigned char *signature; /* digital signature */
struct PVFS_certificate certificate; /* user certificate buffer */
};
#define extra_size_PVFS_credential (PVFS_REQ_LIMIT_GROUPS * \
sizeof(__u32) + \
PVFS_REQ_LIMIT_ISSUER + \
PVFS_REQ_LIMIT_SIGNATURE + \
extra_size_PVFS_certificate)
/* This structure is used by the VFS-client interaction alone */
struct PVFS_keyval_pair {
char key[PVFS_MAX_XATTR_NAMELEN];
__s32 key_sz; /* __s32 for portable, fixed-size structures */
__s32 val_sz;
char val[PVFS_MAX_XATTR_VALUELEN];
};
/* pvfs2-sysint.h ***********************************************************/
/* Describes attributes for a file, directory, or symlink. */
struct PVFS_sys_attr_s {
__u32 owner;
__u32 group;
__u32 perms;
__u64 atime;
__u64 mtime;
__u64 ctime;
__s64 size;
/* NOTE: caller must free if valid */
char *link_target;
/* Changed to __s32 so that size of structure does not change */
__s32 dfile_count;
/* Changed to __s32 so that size of structure does not change */
__s32 distr_dir_servers_initial;
/* Changed to __s32 so that size of structure does not change */
__s32 distr_dir_servers_max;
/* Changed to __s32 so that size of structure does not change */
__s32 distr_dir_split_size;
__u32 mirror_copies_count;
/* NOTE: caller must free if valid */
char *dist_name;
/* NOTE: caller must free if valid */
char *dist_params;
__s64 dirent_count;
enum pvfs2_ds_type objtype;
__u64 flags;
__u32 mask;
__s64 blksize;
};
#define PVFS2_LOOKUP_LINK_NO_FOLLOW 0
#define PVFS2_LOOKUP_LINK_FOLLOW 1
/* pint-dev.h ***************************************************************/
/* parameter structure used in PVFS_DEV_DEBUG ioctl command */
struct dev_mask_info_s {
enum {
KERNEL_MASK,
CLIENT_MASK,
} mask_type;
__u64 mask_value;
};
struct dev_mask2_info_s {
__u64 mask1_value;
__u64 mask2_value;
};
/* pvfs2-util.h *************************************************************/
__s32 PVFS_util_translate_mode(int mode);
/* pvfs2-debug.h ************************************************************/
#include "pvfs2-debug.h"
/* pvfs2-internal.h *********************************************************/
#define llu(x) (unsigned long long)(x)
#define lld(x) (long long)(x)
/* pint-dev-shared.h ********************************************************/
#define PVFS_DEV_MAGIC 'k'
#define PVFS2_READDIR_DEFAULT_DESC_COUNT 5
#define DEV_GET_MAGIC 0x1
#define DEV_GET_MAX_UPSIZE 0x2
#define DEV_GET_MAX_DOWNSIZE 0x3
#define DEV_MAP 0x4
#define DEV_REMOUNT_ALL 0x5
#define DEV_DEBUG 0x6
#define DEV_UPSTREAM 0x7
#define DEV_CLIENT_MASK 0x8
#define DEV_CLIENT_STRING 0x9
#define DEV_MAX_NR 0xa
/* supported ioctls, codes are with respect to user-space */
enum {
PVFS_DEV_GET_MAGIC = _IOW(PVFS_DEV_MAGIC, DEV_GET_MAGIC, __s32),
PVFS_DEV_GET_MAX_UPSIZE =
_IOW(PVFS_DEV_MAGIC, DEV_GET_MAX_UPSIZE, __s32),
PVFS_DEV_GET_MAX_DOWNSIZE =
_IOW(PVFS_DEV_MAGIC, DEV_GET_MAX_DOWNSIZE, __s32),
PVFS_DEV_MAP = _IO(PVFS_DEV_MAGIC, DEV_MAP),
PVFS_DEV_REMOUNT_ALL = _IO(PVFS_DEV_MAGIC, DEV_REMOUNT_ALL),
PVFS_DEV_DEBUG = _IOR(PVFS_DEV_MAGIC, DEV_DEBUG, __s32),
PVFS_DEV_UPSTREAM = _IOW(PVFS_DEV_MAGIC, DEV_UPSTREAM, int),
PVFS_DEV_CLIENT_MASK = _IOW(PVFS_DEV_MAGIC,
DEV_CLIENT_MASK,
struct dev_mask2_info_s),
PVFS_DEV_CLIENT_STRING = _IOW(PVFS_DEV_MAGIC,
DEV_CLIENT_STRING,
char *),
PVFS_DEV_MAXNR = DEV_MAX_NR,
};
/*
* version number for use in communicating between kernel space and user
* space
*/
/*
#define PVFS_KERNEL_PROTO_VERSION \
((PVFS2_VERSION_MAJOR * 10000) + \
(PVFS2_VERSION_MINOR * 100) + \
PVFS2_VERSION_SUB)
*/
#define PVFS_KERNEL_PROTO_VERSION 0
/*
* describes memory regions to map in the PVFS_DEV_MAP ioctl.
* NOTE: See devpvfs2-req.c for 32 bit compat structure.
* Since this structure has a variable-sized layout that is different
* on 32 and 64 bit platforms, we need to normalize to a 64 bit layout
* on such systems before servicing ioctl calls from user-space binaries
* that may be 32 bit!
*/
struct PVFS_dev_map_desc {
void *ptr;
__s32 total_size;
__s32 size;
__s32 count;
};
/* gossip.h *****************************************************************/
#ifdef GOSSIP_DISABLE_DEBUG
#define gossip_debug(mask, format, f...) do {} while (0)
#else
extern __u64 gossip_debug_mask;
extern struct client_debug_mask client_debug_mask;
/* try to avoid function call overhead by checking masks in macro */
#define gossip_debug(mask, format, f...) \
do { \
if (gossip_debug_mask & mask) \
printk(format, ##f); \
} while (0)
#endif /* GOSSIP_DISABLE_DEBUG */
/* do file and line number printouts w/ the GNU preprocessor */
#define gossip_ldebug(mask, format, f...) \
gossip_debug(mask, "%s: " format, __func__, ##f)
#define gossip_err printk
#define gossip_lerr(format, f...) \
gossip_err("%s line %d: " format, \
__FILE__, \
__LINE__, \
##f)
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