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88309aae3d
linux/fs/orangefs/protocol.h
Mike Marshall 88309aae3d Orangefs: fix dir_emit code in pvfs2_readdir. 
Al Viro glanced at readdir and surmised that getdents
would misbehave the way it was written... and sure enough.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:32 -04:00

674 lines
24 KiB
C
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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;
}
/* copy a khandle to a field of arbitrary size */
static inline void PVFS_khandle_to(const struct pvfs2_khandle *kh,
void *p, int size)
{
int i;
unsigned char *c = p;
memset(p, 0, size);
for (i = 0; i < 16 && i < size; i++)
c[i] = kh->u[i];
}
/* copy a khandle from a field of arbitrary size */
static inline void PVFS_khandle_from(struct pvfs2_khandle *kh,
void *p, int size)
{
int i;
unsigned char *c = p;
memset(kh, 0, 16);
for (i = 0; i < 16 && i < size; i++)
kh->u[i] = c[i];
}
/* 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
#define PVFS_ERROR_BIT (1 << 30)
#define PVFS_NON_ERRNO_ERROR_BIT (1 << 29)
#define IS_PVFS_ERROR(__error) ((__error)&(PVFS_ERROR_BIT))
#define IS_PVFS_NON_ERRNO_ERROR(__error) \
(((__error)&(PVFS_NON_ERRNO_ERROR_BIT)) && IS_PVFS_ERROR(__error))
#define PVFS_ERROR_TO_ERRNO(__error) PVFS_get_errno_mapping(__error)
/* 7 bits are used for the errno mapped error codes */
#define PVFS_ERROR_CODE(__error) \
((__error) & (__s32)(0x7f|PVFS_ERROR_BIT))
#define PVFS_ERROR_CLASS(__error) \
((__error) & ~((__s32)(0x7f|PVFS_ERROR_BIT|PVFS_NON_ERRNO_ERROR_BIT)))
#define PVFS_NON_ERRNO_ERROR_CODE(__error) \
((__error) & (__s32)(127|PVFS_ERROR_BIT|PVFS_NON_ERRNO_ERROR_BIT))
/* PVFS2 error codes, compliments of asm/errno.h */
#define PVFS_EPERM E(1) /* Operation not permitted */
#define PVFS_ENOENT E(2) /* No such file or directory */
#define PVFS_EINTR E(3) /* Interrupted system call */
#define PVFS_EIO E(4) /* I/O error */
#define PVFS_ENXIO E(5) /* No such device or address */
#define PVFS_EBADF E(6) /* Bad file number */
#define PVFS_EAGAIN E(7) /* Try again */
#define PVFS_ENOMEM E(8) /* Out of memory */
#define PVFS_EFAULT E(9) /* Bad address */
#define PVFS_EBUSY E(10) /* Device or resource busy */
#define PVFS_EEXIST E(11) /* File exists */
#define PVFS_ENODEV E(12) /* No such device */
#define PVFS_ENOTDIR E(13) /* Not a directory */
#define PVFS_EISDIR E(14) /* Is a directory */
#define PVFS_EINVAL E(15) /* Invalid argument */
#define PVFS_EMFILE E(16) /* Too many open files */
#define PVFS_EFBIG E(17) /* File too large */
#define PVFS_ENOSPC E(18) /* No space left on device */
#define PVFS_EROFS E(19) /* Read-only file system */
#define PVFS_EMLINK E(20) /* Too many links */
#define PVFS_EPIPE E(21) /* Broken pipe */
#define PVFS_EDEADLK E(22) /* Resource deadlock would occur */
#define PVFS_ENAMETOOLONG E(23) /* File name too long */
#define PVFS_ENOLCK E(24) /* No record locks available */
#define PVFS_ENOSYS E(25) /* Function not implemented */
#define PVFS_ENOTEMPTY E(26) /* Directory not empty */
/*
#define PVFS_ELOOP E(27) * Too many symbolic links encountered
*/
#define PVFS_EWOULDBLOCK E(28) /* Operation would block */
#define PVFS_ENOMSG E(29) /* No message of desired type */
#define PVFS_EUNATCH E(30) /* Protocol driver not attached */
#define PVFS_EBADR E(31) /* Invalid request descriptor */
#define PVFS_EDEADLOCK E(32)
#define PVFS_ENODATA E(33) /* No data available */
#define PVFS_ETIME E(34) /* Timer expired */
#define PVFS_ENONET E(35) /* Machine is not on the network */
#define PVFS_EREMOTE E(36) /* Object is remote */
#define PVFS_ECOMM E(37) /* Communication error on send */
#define PVFS_EPROTO E(38) /* Protocol error */
#define PVFS_EBADMSG E(39) /* Not a data message */
/*
#define PVFS_EOVERFLOW E(40) * Value too large for defined data
* type
*/
/*
#define PVFS_ERESTART E(41) * Interrupted system call should be
* restarted
*/
#define PVFS_EMSGSIZE E(42) /* Message too long */
#define PVFS_EPROTOTYPE E(43) /* Protocol wrong type for socket */
#define PVFS_ENOPROTOOPT E(44) /* Protocol not available */
#define PVFS_EPROTONOSUPPORT E(45) /* Protocol not supported */
/*
#define PVFS_EOPNOTSUPP E(46) * Operation not supported on transport
* endpoint
*/
#define PVFS_EADDRINUSE E(47) /* Address already in use */
#define PVFS_EADDRNOTAVAIL E(48) /* Cannot assign requested address */
#define PVFS_ENETDOWN E(49) /* Network is down */
#define PVFS_ENETUNREACH E(50) /* Network is unreachable */
/*
#define PVFS_ENETRESET E(51) * Network dropped connection because
* of reset
*/
#define PVFS_ENOBUFS E(52) /* No buffer space available */
#define PVFS_ETIMEDOUT E(53) /* Connection timed out */
#define PVFS_ECONNREFUSED E(54) /* Connection refused */
#define PVFS_EHOSTDOWN E(55) /* Host is down */
#define PVFS_EHOSTUNREACH E(56) /* No route to host */
#define PVFS_EALREADY E(57) /* Operation already in progress */
#define PVFS_EACCES E(58) /* Access not allowed */
#define PVFS_ECONNRESET E(59) /* Connection reset by peer */
#define PVFS_ERANGE E(60) /* Math out of range or buf too small */
/***************** non-errno/pvfs2 specific 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))
/*
* NOTE: PLEASE DO NOT ARBITRARILY ADD NEW ERRNO ERROR CODES!
*
* IF YOU CHOOSE TO ADD A NEW ERROR CODE (DESPITE OUR PLEA), YOU ALSO
* NEED TO INCREMENT PVFS_ERRNO MAX (BELOW) AND ADD A MAPPING TO A
* UNIX ERRNO VALUE IN THE MACROS BELOW (USED IN
* src/common/misc/errno-mapping.c and the kernel module)
*/
#define PVFS_ERRNO_MAX 61
#define PVFS_ERROR_BMI (1 << 7) /* BMI-specific error */
#define PVFS_ERROR_TROVE (2 << 7) /* Trove-specific error */
#define PVFS_ERROR_FLOW (3 << 7)
#define PVFS_ERROR_SM (4 << 7) /* state machine specific error */
#define PVFS_ERROR_SCHED (5 << 7)
#define PVFS_ERROR_CLIENT (6 << 7)
#define PVFS_ERROR_DEV (7 << 7) /* device file interaction */
#define PVFS_ERROR_CLASS_BITS \
(PVFS_ERROR_BMI | \
PVFS_ERROR_TROVE | \
PVFS_ERROR_FLOW | \
PVFS_ERROR_SM | \
PVFS_ERROR_SCHED | \
PVFS_ERROR_CLIENT | \
PVFS_ERROR_DEV)
#define DECLARE_ERRNO_MAPPING() \
__s32 PINT_errno_mapping[PVFS_ERRNO_MAX + 1] = { \
0, /* leave this one empty */ \
EPERM, /* 1 */ \
ENOENT, \
EINTR, \
EIO, \
ENXIO, \
EBADF, \
EAGAIN, \
ENOMEM, \
EFAULT, \
EBUSY, /* 10 */ \
EEXIST, \
ENODEV, \
ENOTDIR, \
EISDIR, \
EINVAL, \
EMFILE, \
EFBIG, \
ENOSPC, \
EROFS, \
EMLINK, /* 20 */ \
EPIPE, \
EDEADLK, \
ENAMETOOLONG, \
ENOLCK, \
ENOSYS, \
ENOTEMPTY, \
ELOOP, \
EWOULDBLOCK, \
ENOMSG, \
EUNATCH, /* 30 */ \
EBADR, \
EDEADLOCK, \
ENODATA, \
ETIME, \
ENONET, \
EREMOTE, \
ECOMM, \
EPROTO, \
EBADMSG, \
EOVERFLOW, /* 40 */ \
ERESTART, \
EMSGSIZE, \
EPROTOTYPE, \
ENOPROTOOPT, \
EPROTONOSUPPORT, \
EOPNOTSUPP, \
EADDRINUSE, \
EADDRNOTAVAIL, \
ENETDOWN, \
ENETUNREACH, /* 50 */ \
ENETRESET, \
ENOBUFS, \
ETIMEDOUT, \
ECONNREFUSED, \
EHOSTDOWN, \
EHOSTUNREACH, \
EALREADY, \
EACCES, \
ECONNRESET, /* 59 */ \
ERANGE, \
0 /* PVFS_ERRNO_MAX */ \
}; \
const char *PINT_non_errno_strerror_mapping[] = { \
"Success", /* 0 */ \
"Operation cancelled (possibly due to timeout)", \
"Device initialization failed", \
"Detailed per-server errors are available", \
"Unknown host", \
"No address associated with name", \
"Unknown server error", \
"Host name lookup failure", \
"Path contains non-PVFS elements", \
"Security error", \
}; \
__s32 PINT_non_errno_mapping[] = { \
0, /* leave this one empty */ \
PVFS_ECANCEL, /* 1 */ \
PVFS_EDEVINIT, /* 2 */ \
PVFS_EDETAIL, /* 3 */ \
PVFS_EHOSTNTFD, /* 4 */ \
PVFS_EADDRNTFD, /* 5 */ \
PVFS_ENORECVR, /* 6 */ \
PVFS_ETRYAGAIN, /* 7 */ \
PVFS_ENOTPVFS, /* 8 */ \
PVFS_ESECURITY, /* 9 */ \
}
/*
* NOTE: PVFS_get_errno_mapping will convert a PVFS_ERROR_CODE to an
* errno value. If the error code is a pvfs2 specific error code
* (i.e. a PVFS_NON_ERRNO_ERROR_CODE), PVFS_get_errno_mapping will
* return an index into the PINT_non_errno_strerror_mapping array which
* can be used for getting the pvfs2 specific strerror message given
* the error code. if the value is not a recognized error code, the
* passed in value will be returned unchanged.
*/
#define DECLARE_ERRNO_MAPPING_AND_FN() \
extern __s32 PINT_errno_mapping[]; \
extern __s32 PINT_non_errno_mapping[]; \
extern const char *PINT_non_errno_strerror_mapping[]; \
static __s32 PVFS_get_errno_mapping(__s32 error) \
{ \
__s32 ret = error, mask = 0; \
__s32 positive = ((error > -1) ? 1 : 0); \
if (IS_PVFS_NON_ERRNO_ERROR((positive ? error : -error))) { \
mask = (PVFS_NON_ERRNO_ERROR_BIT | \
PVFS_ERROR_BIT | \
PVFS_ERROR_CLASS_BITS); \
ret = PVFS_NON_ERRNO_ERROR_CODE(((positive ? \
error : \
abs(error))) & \
~mask); \
} \
else if (IS_PVFS_ERROR((positive ? error : -error))) { \
mask = (PVFS_ERROR_BIT | \
PVFS_ERROR_CLASS_BITS); \
ret = PINT_errno_mapping[PVFS_ERROR_CODE(((positive ? \
error : \
abs(error))) & \
~mask)]; \
} \
return ret; \
} \
DECLARE_ERRNO_MAPPING()
/* 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 *************************************************************/
#define PVFS_util_min(x1, x2) (((x1) > (x2)) ? (x2) : (x1))
__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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