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/*
Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS 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 3 of the License,
or (at your option) any later version.
GlusterFS 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, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _IATT_H
#define _IATT_H
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <sys/stat.h> /* for iatt <--> stat conversions */
#include <unistd.h>
typedef enum {
IA_INVAL = 0,
IA_IFREG,
IA_IFDIR,
IA_IFLNK,
IA_IFBLK,
IA_IFCHR,
IA_IFIFO,
IA_IFSOCK
} ia_type_t;
typedef struct {
uint8_t suid:1;
uint8_t sgid:1;
uint8_t sticky:1;
struct {
uint8_t read:1;
uint8_t write:1;
uint8_t exec:1;
} owner, group, other;
} ia_prot_t;
struct iatt {
uint64_t ia_ino; /* inode number */
uint64_t ia_gen; /* generation number */
uint64_t ia_dev; /* backing device ID */
ia_type_t ia_type; /* type of file */
ia_prot_t ia_prot; /* protection */
uint32_t ia_nlink; /* Link count */
uint32_t ia_uid; /* user ID of owner */
uint32_t ia_gid; /* group ID of owner */
uint64_t ia_rdev; /* device ID (if special file) */
uint64_t ia_size; /* file size in bytes */
uint32_t ia_blksize; /* blocksize for filesystem I/O */
uint64_t ia_blocks; /* number of 512B blocks allocated */
uint32_t ia_atime; /* last access time */
uint32_t ia_atime_nsec;
uint32_t ia_mtime; /* last modification time */
uint32_t ia_mtime_nsec;
uint32_t ia_ctime; /* last status change time */
uint32_t ia_ctime_nsec;
};
#define IA_ISREG(t) (t == IA_IFREG)
#define IA_ISDIR(t) (t == IA_IFDIR)
#define IA_ISLNK(t) (t == IA_IFLNK)
#define IA_ISBLK(t) (t == IA_IFBLK)
#define IA_ISCHR(t) (t == IA_IFCHR)
#define IA_ISFIFO(t) (t == IA_IFIFO)
#define IA_ISSOCK(t) (t == IA_IFSOCK)
static inline uint32_t
ia_major (uint64_t ia_dev)
{
return (uint32_t) (ia_dev >> 32);
}
static inline uint32_t
ia_minor (uint64_t ia_dev)
{
return (uint32_t) (ia_dev & 0xffffffff);
}
static inline uint64_t
ia_makedev (uint32_t ia_maj, uint32_t ia_min)
{
return ((((uint64_t) ia_maj) << 32) & ia_min);
}
static inline ia_prot_t
ia_prot_from_st_mode (mode_t mode)
{
ia_prot_t ia_prot = {0, };
if (mode & S_ISUID)
ia_prot.suid = 1;
if (mode & S_ISGID)
ia_prot.sgid = 1;
if (mode & S_ISVTX)
ia_prot.sticky = 1;
if (mode & S_IRUSR)
ia_prot.owner.read = 1;
if (mode & S_IWUSR)
ia_prot.owner.write = 1;
if (mode & S_IXUSR)
ia_prot.owner.exec = 1;
if (mode & S_IRGRP)
ia_prot.group.read = 1;
if (mode & S_IWGRP)
ia_prot.group.write = 1;
if (mode & S_IXGRP)
ia_prot.group.exec = 1;
if (mode & S_IROTH)
ia_prot.other.read = 1;
if (mode & S_IWOTH)
ia_prot.other.write = 1;
if (mode & S_IXOTH)
ia_prot.other.exec = 1;
return ia_prot;
}
static inline ia_type_t
ia_type_from_st_mode (mode_t mode)
{
ia_type_t type = IA_INVAL;
if (S_ISREG (mode))
type = IA_IFREG;
if (S_ISDIR (mode))
type = IA_IFDIR;
if (S_ISLNK (mode))
type = IA_IFLNK;
if (S_ISBLK (mode))
type = IA_IFBLK;
if (S_ISCHR (mode))
type = IA_IFCHR;
if (S_ISFIFO (mode))
type = IA_IFIFO;
if (S_ISSOCK (mode))
type = IA_IFSOCK;
return type;
}
static inline mode_t
st_mode_from_ia (ia_prot_t prot, ia_type_t type)
{
mode_t st_mode = 0;
uint32_t type_bit = 0;
uint32_t prot_bit = 0;
switch (type) {
case IA_IFREG:
type_bit = S_IFREG;
break;
case IA_IFDIR:
type_bit = S_IFDIR;
break;
case IA_IFLNK:
type_bit = S_IFLNK;
break;
case IA_IFBLK:
type_bit = S_IFBLK;
break;
case IA_IFCHR:
type_bit = S_IFCHR;
break;
case IA_IFIFO:
type_bit = S_IFIFO;
break;
case IA_IFSOCK:
type_bit = S_IFSOCK;
break;
case IA_INVAL:
break;
}
if (prot.suid)
prot_bit |= S_ISUID;
if (prot.sgid)
prot_bit |= S_ISGID;
if (prot.sticky)
prot_bit |= S_ISVTX;
if (prot.owner.read)
prot_bit |= S_IRUSR;
if (prot.owner.write)
prot_bit |= S_IWUSR;
if (prot.owner.exec)
prot_bit |= S_IXUSR;
if (prot.group.read)
prot_bit |= S_IRGRP;
if (prot.group.write)
prot_bit |= S_IWGRP;
if (prot.group.exec)
prot_bit |= S_IXGRP;
if (prot.other.read)
prot_bit |= S_IROTH;
if (prot.other.write)
prot_bit |= S_IWOTH;
if (prot.other.exec)
prot_bit |= S_IXOTH;
st_mode = (type_bit | prot_bit);
return st_mode;
}
static inline int
iatt_from_stat (struct iatt *iatt, struct stat *stat)
{
iatt->ia_dev = stat->st_dev;
iatt->ia_ino = stat->st_ino;
(void) iatt->ia_gen;
iatt->ia_type = ia_type_from_st_mode (stat->st_mode);
iatt->ia_prot = ia_prot_from_st_mode (stat->st_mode);
iatt->ia_nlink = stat->st_nlink;
iatt->ia_uid = stat->st_uid;
iatt->ia_gid = stat->st_gid;
iatt->ia_rdev = ia_makedev (major (stat->st_rdev),
minor (stat->st_rdev));
iatt->ia_size = stat->st_size;
iatt->ia_blksize = stat->st_blksize;
iatt->ia_blocks = stat->st_blocks;
iatt->ia_atime = stat->st_atime;
iatt->ia_atime_nsec = ST_ATIM_NSEC (stat);
iatt->ia_mtime = stat->st_mtime;
iatt->ia_mtime_nsec = ST_MTIM_NSEC (stat);
iatt->ia_ctime = stat->st_ctime;
iatt->ia_ctime_nsec = ST_CTIM_NSEC (stat);
return 0;
}
static inline int
iatt_to_stat (struct iatt *iatt, struct stat *stat)
{
stat->st_dev = iatt->ia_dev;
stat->st_ino = iatt->ia_ino;
(void) iatt->ia_gen;
stat->st_mode = st_mode_from_ia (iatt->ia_prot, iatt->ia_type);
stat->st_nlink = iatt->ia_nlink;
stat->st_uid = iatt->ia_uid;
stat->st_gid = iatt->ia_gid;
stat->st_rdev = makedev (ia_major (iatt->ia_rdev),
ia_minor (iatt->ia_rdev));
stat->st_size = iatt->ia_size;
stat->st_blksize = iatt->ia_blksize;
stat->st_blocks = iatt->ia_blocks;
stat->st_atime = iatt->ia_atime;
ST_ATIM_NSEC_SET (stat, iatt->ia_atime_nsec);
stat->st_mtime = iatt->ia_mtime;
ST_MTIM_NSEC_SET (stat, iatt->ia_mtime_nsec);
stat->st_ctime = iatt->ia_ctime;
ST_CTIM_NSEC_SET (stat, iatt->ia_ctime_nsec);
return 0;
}
#endif /* _IATT_H */
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