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c8b81ffb34
* configure.ac: Detect if ‘openat’ is defined.
* libguile/filesys.c
(flags_to_mode): Extract from ...
(scm_mode): ... here.
(scm_open_fdes_at, scm_openat): Define the Scheme bindings.
* libguile/filesys.h (scm_open_fdes_at, scm_openat): Make them part
of the API.
* doc/ref/posix.texi (File System): Document them.
* test-suite/tests/filesys.test ("openat"): Test ‘openat’.
* libguile/syscalls.h (openat_or_openat64): Decide between ‘openat’
and ‘openat64’.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
#ifndef SCM_SYSCALLS_H
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#define SCM_SYSCALLS_H
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/* Copyright 1995-1996,2000-2002,2006,2008-2011,2013-2014,2018
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Free Software Foundation, Inc.
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This file is part of Guile.
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Guile is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by 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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Guile is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with Guile. If not, see
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<https://www.gnu.org/licenses/>. */
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/* ASYNC_TICK after finding EINTR in order to handle pending signals, if
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any. See comment in scm_syserror. */
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#define SCM_SYSCALL(line) \
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do \
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{ \
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errno = 0; \
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line; \
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if (errno == EINTR) \
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{ \
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scm_async_tick (); \
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errno = EINTR; \
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} \
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} \
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while (errno == EINTR)
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#if defined GUILE_USE_64_CALLS && GUILE_USE_64_CALLS && defined(HAVE_STAT64)
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#define CHOOSE_LARGEFILE(foo,foo64) foo64
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#else
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#define CHOOSE_LARGEFILE(foo,foo64) foo
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#endif
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/* These names are a bit long, but they make it clear what they represent. */
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#if SCM_HAVE_STRUCT_DIRENT64 == 1
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# define dirent_or_dirent64 CHOOSE_LARGEFILE(dirent,dirent64)
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#else
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# define dirent_or_dirent64 dirent
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#endif
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#define fstat_or_fstat64 CHOOSE_LARGEFILE(fstat,fstat64)
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#define ftruncate_or_ftruncate64 CHOOSE_LARGEFILE(ftruncate,ftruncate64)
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#define lseek_or_lseek64 CHOOSE_LARGEFILE(lseek,lseek64)
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#define lstat_or_lstat64 CHOOSE_LARGEFILE(lstat,lstat64)
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#define off_t_or_off64_t CHOOSE_LARGEFILE(off_t,off64_t)
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#define open_or_open64 CHOOSE_LARGEFILE(open,open64)
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#define openat_or_openat64 CHOOSE_LARGEFILE(openat,openat64)
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#define readdir_or_readdir64 CHOOSE_LARGEFILE(readdir,readdir64)
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#if SCM_HAVE_READDIR64_R == 1
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# define readdir_r_or_readdir64_r CHOOSE_LARGEFILE(readdir_r,readdir64_r)
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#else
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# define readdir_r_or_readdir64_r readdir_r
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#endif
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#define stat_or_stat64 CHOOSE_LARGEFILE(stat,stat64)
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#define fstatat_or_fstatat64 CHOOSE_LARGEFILE(fstatat,fstatat64)
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#define truncate_or_truncate64 CHOOSE_LARGEFILE(truncate,truncate64)
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#define scm_from_off_t_or_off64_t CHOOSE_LARGEFILE(scm_from_off_t,scm_from_int64)
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#define scm_from_ino_t_or_ino64_t CHOOSE_LARGEFILE(scm_from_ulong,scm_from_uint64)
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#define scm_from_blkcnt_t_or_blkcnt64_t CHOOSE_LARGEFILE(scm_from_ulong,scm_from_uint64)
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#define scm_to_off_t_or_off64_t CHOOSE_LARGEFILE(scm_to_off_t,scm_to_int64)
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#if SIZEOF_OFF_T == 4
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# define scm_to_off_t scm_to_int32
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# define scm_from_off_t scm_from_int32
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#elif SIZEOF_OFF_T == 8
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# define scm_to_off_t scm_to_int64
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# define scm_from_off_t scm_from_int64
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#else
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# error sizeof(off_t) is not 4 or 8.
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#endif
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#define scm_to_off64_t scm_to_int64
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#define scm_from_off64_t scm_from_int64
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#endif /* SCM_SYSCALLS_H */
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