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/* File-I/O functions for GDB, the GNU debugger.
Copyright (C) 2003-2023 Free Software Foundation, Inc.
This file is part of GDB.
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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
#ifndef COMMON_FILEIO_H
#define COMMON_FILEIO_H
#include <sys/stat.h>
/* The following flags are defined to be independent of the host
as well as the target side implementation of these constants.
All constants are defined with a leading FILEIO_ in the name
to allow the usage of these constants together with the
corresponding implementation dependent constants in one module. */
/* open(2) flags */
#define FILEIO_O_RDONLY 0x0
#define FILEIO_O_WRONLY 0x1
#define FILEIO_O_RDWR 0x2
#define FILEIO_O_APPEND 0x8
#define FILEIO_O_CREAT 0x200
#define FILEIO_O_TRUNC 0x400
#define FILEIO_O_EXCL 0x800
#define FILEIO_O_SUPPORTED (FILEIO_O_RDONLY | FILEIO_O_WRONLY| \
FILEIO_O_RDWR | FILEIO_O_APPEND| \
FILEIO_O_CREAT | FILEIO_O_TRUNC| \
FILEIO_O_EXCL)
/* mode_t bits */
#define FILEIO_S_IFREG 0100000
#define FILEIO_S_IFDIR 040000
#define FILEIO_S_IFCHR 020000
#define FILEIO_S_IRUSR 0400
#define FILEIO_S_IWUSR 0200
#define FILEIO_S_IXUSR 0100
#define FILEIO_S_IRWXU 0700
#define FILEIO_S_IRGRP 040
#define FILEIO_S_IWGRP 020
#define FILEIO_S_IXGRP 010
#define FILEIO_S_IRWXG 070
#define FILEIO_S_IROTH 04
#define FILEIO_S_IWOTH 02
#define FILEIO_S_IXOTH 01
#define FILEIO_S_IRWXO 07
#define FILEIO_S_SUPPORTED (FILEIO_S_IFREG|FILEIO_S_IFDIR| \
FILEIO_S_IRWXU|FILEIO_S_IRWXG| \
FILEIO_S_IRWXO)
/* lseek(2) flags */
#define FILEIO_SEEK_SET 0
#define FILEIO_SEEK_CUR 1
#define FILEIO_SEEK_END 2
/* errno values */
enum fileio_error
{
FILEIO_SUCCESS = 0,
FILEIO_EPERM = 1,
FILEIO_ENOENT = 2,
FILEIO_EINTR = 4,
FILEIO_EIO = 5,
FILEIO_EBADF = 9,
FILEIO_EACCES = 13,
FILEIO_EFAULT = 14,
FILEIO_EBUSY = 16,
FILEIO_EEXIST = 17,
FILEIO_ENODEV = 19,
FILEIO_ENOTDIR = 20,
FILEIO_EISDIR = 21,
FILEIO_EINVAL = 22,
FILEIO_ENFILE = 23,
FILEIO_EMFILE = 24,
FILEIO_EFBIG = 27,
FILEIO_ENOSPC = 28,
FILEIO_ESPIPE = 29,
FILEIO_EROFS = 30,
FILEIO_ENOSYS = 88,
FILEIO_ENAMETOOLONG = 91,
FILEIO_EUNKNOWN = 9999,
};
#define FIO_INT_LEN 4
#define FIO_UINT_LEN 4
#define FIO_MODE_LEN 4
#define FIO_TIME_LEN 4
#define FIO_LONG_LEN 8
#define FIO_ULONG_LEN 8
typedef char fio_int_t[FIO_INT_LEN];
typedef char fio_uint_t[FIO_UINT_LEN];
typedef char fio_mode_t[FIO_MODE_LEN];
typedef char fio_time_t[FIO_TIME_LEN];
typedef char fio_long_t[FIO_LONG_LEN];
typedef char fio_ulong_t[FIO_ULONG_LEN];
/* Struct stat as used in protocol. For complete independence
of host/target systems, it's defined as an array with offsets
to the members. */
struct fio_stat
{
fio_uint_t fst_dev;
fio_uint_t fst_ino;
fio_mode_t fst_mode;
fio_uint_t fst_nlink;
fio_uint_t fst_uid;
fio_uint_t fst_gid;
fio_uint_t fst_rdev;
fio_ulong_t fst_size;
fio_ulong_t fst_blksize;
fio_ulong_t fst_blocks;
fio_time_t fst_atime;
fio_time_t fst_mtime;
fio_time_t fst_ctime;
};
struct fio_timeval
{
fio_time_t ftv_sec;
fio_long_t ftv_usec;
};
/* Convert a host-format errno value to a File-I/O error number. */
extern fileio_error host_to_fileio_error (int error);
/* Convert a File-I/O error number to a host-format errno value. */
extern int fileio_error_to_host (fileio_error errnum);
/* Convert File-I/O open flags FFLAGS to host format, storing
the result in *FLAGS. Return 0 on success, -1 on error. */
extern int fileio_to_host_openflags (int fflags, int *flags);
/* Convert File-I/O mode FMODE to host format, storing
the result in *MODE. Return 0 on success, -1 on error. */
extern int fileio_to_host_mode (int fmode, mode_t *mode);
/* Pack a host-format integer into a byte buffer in big-endian
format. BYTES specifies the size of the integer to pack in
bytes. */
static inline void
host_to_bigendian (LONGEST num, char *buf, int bytes)
{
int i;
for (i = 0; i < bytes; ++i)
buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
}
/* Pack a host-format integer into an fio_uint_t. */
static inline void
host_to_fileio_uint (long num, fio_uint_t fnum)
{
host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
}
/* Pack a host-format time_t into an fio_time_t. */
static inline void
host_to_fileio_time (time_t num, fio_time_t fnum)
{
host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
}
/* Pack a host-format struct stat into a struct fio_stat. */
extern void host_to_fileio_stat (struct stat *st, struct fio_stat *fst);
#endif /* COMMON_FILEIO_H */
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