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/* File-I/O functions for GDB, the GNU debugger.
Copyright (C) 2003-2017 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/>. */
#include "common-defs.h"
#include "fileio.h"
#include <sys/stat.h>
#include <fcntl.h>
/* See fileio.h. */
int
host_to_fileio_error (int error)
{
switch (error)
{
case EPERM:
return FILEIO_EPERM;
case ENOENT:
return FILEIO_ENOENT;
case EINTR:
return FILEIO_EINTR;
case EIO:
return FILEIO_EIO;
case EBADF:
return FILEIO_EBADF;
case EACCES:
return FILEIO_EACCES;
case EFAULT:
return FILEIO_EFAULT;
case EBUSY:
return FILEIO_EBUSY;
case EEXIST:
return FILEIO_EEXIST;
case ENODEV:
return FILEIO_ENODEV;
case ENOTDIR:
return FILEIO_ENOTDIR;
case EISDIR:
return FILEIO_EISDIR;
case EINVAL:
return FILEIO_EINVAL;
case ENFILE:
return FILEIO_ENFILE;
case EMFILE:
return FILEIO_EMFILE;
case EFBIG:
return FILEIO_EFBIG;
case ENOSPC:
return FILEIO_ENOSPC;
case ESPIPE:
return FILEIO_ESPIPE;
case EROFS:
return FILEIO_EROFS;
case ENOSYS:
return FILEIO_ENOSYS;
case ENAMETOOLONG:
return FILEIO_ENAMETOOLONG;
}
return FILEIO_EUNKNOWN;
}
/* See fileio.h. */
int
fileio_to_host_openflags (int fileio_open_flags, int *open_flags_p)
{
int open_flags = 0;
if (fileio_open_flags & ~FILEIO_O_SUPPORTED)
return -1;
if (fileio_open_flags & FILEIO_O_CREAT)
open_flags |= O_CREAT;
if (fileio_open_flags & FILEIO_O_EXCL)
open_flags |= O_EXCL;
if (fileio_open_flags & FILEIO_O_TRUNC)
open_flags |= O_TRUNC;
if (fileio_open_flags & FILEIO_O_APPEND)
open_flags |= O_APPEND;
if (fileio_open_flags & FILEIO_O_RDONLY)
open_flags |= O_RDONLY;
if (fileio_open_flags & FILEIO_O_WRONLY)
open_flags |= O_WRONLY;
if (fileio_open_flags & FILEIO_O_RDWR)
open_flags |= O_RDWR;
/* On systems supporting binary and text mode, always open files
in binary mode. */
#ifdef O_BINARY
open_flags |= O_BINARY;
#endif
*open_flags_p = open_flags;
return 0;
}
/* See fileio.h. */
int
fileio_to_host_mode (int fileio_mode, mode_t *mode_p)
{
mode_t mode = 0;
if (fileio_mode & ~FILEIO_S_SUPPORTED)
return -1;
if (fileio_mode & FILEIO_S_IFREG)
mode |= S_IFREG;
if (fileio_mode & FILEIO_S_IFDIR)
mode |= S_IFDIR;
if (fileio_mode & FILEIO_S_IFCHR)
mode |= S_IFCHR;
if (fileio_mode & FILEIO_S_IRUSR)
mode |= S_IRUSR;
if (fileio_mode & FILEIO_S_IWUSR)
mode |= S_IWUSR;
if (fileio_mode & FILEIO_S_IXUSR)
mode |= S_IXUSR;
#ifdef S_IRGRP
if (fileio_mode & FILEIO_S_IRGRP)
mode |= S_IRGRP;
#endif
#ifdef S_IWGRP
if (fileio_mode & FILEIO_S_IWGRP)
mode |= S_IWGRP;
#endif
#ifdef S_IXGRP
if (fileio_mode & FILEIO_S_IXGRP)
mode |= S_IXGRP;
#endif
if (fileio_mode & FILEIO_S_IROTH)
mode |= S_IROTH;
#ifdef S_IWOTH
if (fileio_mode & FILEIO_S_IWOTH)
mode |= S_IWOTH;
#endif
#ifdef S_IXOTH
if (fileio_mode & FILEIO_S_IXOTH)
mode |= S_IXOTH;
#endif
*mode_p = mode;
return 0;
}
/* Convert a host-format mode_t into a bitmask of File-I/O flags. */
static LONGEST
fileio_mode_pack (mode_t mode)
{
mode_t tmode = 0;
if (S_ISREG (mode))
tmode |= FILEIO_S_IFREG;
if (S_ISDIR (mode))
tmode |= FILEIO_S_IFDIR;
if (S_ISCHR (mode))
tmode |= FILEIO_S_IFCHR;
if (mode & S_IRUSR)
tmode |= FILEIO_S_IRUSR;
if (mode & S_IWUSR)
tmode |= FILEIO_S_IWUSR;
if (mode & S_IXUSR)
tmode |= FILEIO_S_IXUSR;
#ifdef S_IRGRP
if (mode & S_IRGRP)
tmode |= FILEIO_S_IRGRP;
#endif
#ifdef S_IWGRP
if (mode & S_IWGRP)
tmode |= FILEIO_S_IWGRP;
#endif
#ifdef S_IXGRP
if (mode & S_IXGRP)
tmode |= FILEIO_S_IXGRP;
#endif
if (mode & S_IROTH)
tmode |= FILEIO_S_IROTH;
#ifdef S_IWOTH
if (mode & S_IWOTH)
tmode |= FILEIO_S_IWOTH;
#endif
#ifdef S_IXOTH
if (mode & S_IXOTH)
tmode |= FILEIO_S_IXOTH;
#endif
return tmode;
}
/* Pack a host-format mode_t into an fio_mode_t. */
static void
host_to_fileio_mode (mode_t num, fio_mode_t fnum)
{
host_to_bigendian (fileio_mode_pack (num), (char *) fnum, 4);
}
/* Pack a host-format integer into an fio_ulong_t. */
static void
host_to_fileio_ulong (LONGEST num, fio_ulong_t fnum)
{
host_to_bigendian (num, (char *) fnum, 8);
}
/* See fileio.h. */
void
host_to_fileio_stat (struct stat *st, struct fio_stat *fst)
{
LONGEST blksize;
host_to_fileio_uint ((long) st->st_dev, fst->fst_dev);
host_to_fileio_uint ((long) st->st_ino, fst->fst_ino);
host_to_fileio_mode (st->st_mode, fst->fst_mode);
host_to_fileio_uint ((long) st->st_nlink, fst->fst_nlink);
host_to_fileio_uint ((long) st->st_uid, fst->fst_uid);
host_to_fileio_uint ((long) st->st_gid, fst->fst_gid);
host_to_fileio_uint ((long) st->st_rdev, fst->fst_rdev);
host_to_fileio_ulong ((LONGEST) st->st_size, fst->fst_size);
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
blksize = st->st_blksize;
#else
blksize = 512;
#endif
host_to_fileio_ulong (blksize, fst->fst_blksize);
#if HAVE_STRUCT_STAT_ST_BLOCKS
host_to_fileio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks);
#else
/* FIXME: This is correct for DJGPP, but other systems that don't
have st_blocks, if any, might prefer 512 instead of st_blksize.
(eliz, 30-12-2003) */
host_to_fileio_ulong (((LONGEST) st->st_size + blksize - 1)
/ blksize,
fst->fst_blocks);
#endif
host_to_fileio_time (st->st_atime, fst->fst_atime);
host_to_fileio_time (st->st_mtime, fst->fst_mtime);
host_to_fileio_time (st->st_ctime, fst->fst_ctime);
}
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