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517a63c2c4
gdb_bfd.c and remote.c contain identical implementations of a
fileio_error -> errno function. Factor that out to
gdbsupport/fileio.{h,cc}.
Rename it fileio_error_to_host, for symmetry with host_to_fileio_error.
Change-Id: Ib9b8807683de2f809c94a5303e708acc2251a0df
190 lines
5.5 KiB
C
190 lines
5.5 KiB
C
/* File-I/O functions for GDB, the GNU debugger.
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Copyright (C) 2003-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef COMMON_FILEIO_H
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#define COMMON_FILEIO_H
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#include <sys/stat.h>
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/* The following flags are defined to be independent of the host
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as well as the target side implementation of these constants.
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All constants are defined with a leading FILEIO_ in the name
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to allow the usage of these constants together with the
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corresponding implementation dependent constants in one module. */
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/* open(2) flags */
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#define FILEIO_O_RDONLY 0x0
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#define FILEIO_O_WRONLY 0x1
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#define FILEIO_O_RDWR 0x2
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#define FILEIO_O_APPEND 0x8
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#define FILEIO_O_CREAT 0x200
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#define FILEIO_O_TRUNC 0x400
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#define FILEIO_O_EXCL 0x800
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#define FILEIO_O_SUPPORTED (FILEIO_O_RDONLY | FILEIO_O_WRONLY| \
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FILEIO_O_RDWR | FILEIO_O_APPEND| \
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FILEIO_O_CREAT | FILEIO_O_TRUNC| \
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FILEIO_O_EXCL)
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/* mode_t bits */
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#define FILEIO_S_IFREG 0100000
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#define FILEIO_S_IFDIR 040000
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#define FILEIO_S_IFCHR 020000
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#define FILEIO_S_IRUSR 0400
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#define FILEIO_S_IWUSR 0200
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#define FILEIO_S_IXUSR 0100
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#define FILEIO_S_IRWXU 0700
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#define FILEIO_S_IRGRP 040
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#define FILEIO_S_IWGRP 020
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#define FILEIO_S_IXGRP 010
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#define FILEIO_S_IRWXG 070
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#define FILEIO_S_IROTH 04
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#define FILEIO_S_IWOTH 02
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#define FILEIO_S_IXOTH 01
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#define FILEIO_S_IRWXO 07
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#define FILEIO_S_SUPPORTED (FILEIO_S_IFREG|FILEIO_S_IFDIR| \
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FILEIO_S_IRWXU|FILEIO_S_IRWXG| \
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FILEIO_S_IRWXO)
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/* lseek(2) flags */
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#define FILEIO_SEEK_SET 0
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#define FILEIO_SEEK_CUR 1
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#define FILEIO_SEEK_END 2
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/* errno values */
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enum fileio_error
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{
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FILEIO_SUCCESS = 0,
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FILEIO_EPERM = 1,
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FILEIO_ENOENT = 2,
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FILEIO_EINTR = 4,
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FILEIO_EIO = 5,
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FILEIO_EBADF = 9,
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FILEIO_EACCES = 13,
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FILEIO_EFAULT = 14,
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FILEIO_EBUSY = 16,
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FILEIO_EEXIST = 17,
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FILEIO_ENODEV = 19,
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FILEIO_ENOTDIR = 20,
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FILEIO_EISDIR = 21,
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FILEIO_EINVAL = 22,
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FILEIO_ENFILE = 23,
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FILEIO_EMFILE = 24,
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FILEIO_EFBIG = 27,
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FILEIO_ENOSPC = 28,
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FILEIO_ESPIPE = 29,
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FILEIO_EROFS = 30,
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FILEIO_ENOSYS = 88,
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FILEIO_ENAMETOOLONG = 91,
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FILEIO_EUNKNOWN = 9999,
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};
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#define FIO_INT_LEN 4
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#define FIO_UINT_LEN 4
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#define FIO_MODE_LEN 4
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#define FIO_TIME_LEN 4
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#define FIO_LONG_LEN 8
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#define FIO_ULONG_LEN 8
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typedef char fio_int_t[FIO_INT_LEN];
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typedef char fio_uint_t[FIO_UINT_LEN];
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typedef char fio_mode_t[FIO_MODE_LEN];
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typedef char fio_time_t[FIO_TIME_LEN];
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typedef char fio_long_t[FIO_LONG_LEN];
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typedef char fio_ulong_t[FIO_ULONG_LEN];
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/* Struct stat as used in protocol. For complete independence
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of host/target systems, it's defined as an array with offsets
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to the members. */
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struct fio_stat
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{
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fio_uint_t fst_dev;
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fio_uint_t fst_ino;
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fio_mode_t fst_mode;
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fio_uint_t fst_nlink;
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fio_uint_t fst_uid;
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fio_uint_t fst_gid;
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fio_uint_t fst_rdev;
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fio_ulong_t fst_size;
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fio_ulong_t fst_blksize;
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fio_ulong_t fst_blocks;
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fio_time_t fst_atime;
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fio_time_t fst_mtime;
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fio_time_t fst_ctime;
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};
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struct fio_timeval
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{
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fio_time_t ftv_sec;
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fio_long_t ftv_usec;
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};
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/* Convert a host-format errno value to a File-I/O error number. */
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extern fileio_error host_to_fileio_error (int error);
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/* Convert a File-I/O error number to a host-format errno value. */
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extern int fileio_error_to_host (fileio_error errnum);
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/* Convert File-I/O open flags FFLAGS to host format, storing
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the result in *FLAGS. Return 0 on success, -1 on error. */
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extern int fileio_to_host_openflags (int fflags, int *flags);
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/* Convert File-I/O mode FMODE to host format, storing
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the result in *MODE. Return 0 on success, -1 on error. */
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extern int fileio_to_host_mode (int fmode, mode_t *mode);
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/* Pack a host-format integer into a byte buffer in big-endian
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format. BYTES specifies the size of the integer to pack in
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bytes. */
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static inline void
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host_to_bigendian (LONGEST num, char *buf, int bytes)
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{
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int i;
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for (i = 0; i < bytes; ++i)
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buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
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}
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/* Pack a host-format integer into an fio_uint_t. */
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static inline void
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host_to_fileio_uint (long num, fio_uint_t fnum)
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{
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host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
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}
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/* Pack a host-format time_t into an fio_time_t. */
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static inline void
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host_to_fileio_time (time_t num, fio_time_t fnum)
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{
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host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
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}
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/* Pack a host-format struct stat into a struct fio_stat. */
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extern void host_to_fileio_stat (struct stat *st, struct fio_stat *fst);
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#endif /* COMMON_FILEIO_H */
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