diff options
Diffstat (limited to 'gdbsupport/fileio.c')
| -rw-r--r-- | gdbsupport/fileio.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/gdbsupport/fileio.c b/gdbsupport/fileio.c new file mode 100644 index 00000000000..69ed426c87e --- /dev/null +++ b/gdbsupport/fileio.c @@ -0,0 +1,255 @@ +/* File-I/O functions for GDB, the GNU debugger. + + Copyright (C) 2003-2020 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); +} |