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1698036a43
This incorporates: 2016-01-24 openat_proc_name: fix last '/' overwritten on OS/2 kLIBC 2016-01-24 closedir, dirfd, opendir: port to OpenSolaris 5.10 2016-01-15 detect utimes() correctly on OS/2 kLIBC 2016-01-15 openat_proc_name: port to OS/2 kLIBC 2016-01-14 stdint: check _INTPTR_T_DECLARED for intptr_t etc. 2016-01-14 opendir, closedir, dirfd, fdopendir: port to OS/2 kLIBC 2016-01-14 dup, dup2, fcntl: support a directory fd on OS/2 kLIBC 2016-01-14 binary-io: don't put fd in binary mode if a console on EMX 2016-01-14 sig2str: list all signals on FreeBSD >= 7 2016-01-13 acl-permissions: port to USE_ACL==0 platforms 2016-01-12 mktime: rename macro to avoid glibc clash 2016-01-12 Port "$@" to OpenIndiana ksh93 2016-01-12 Port Universal Time settings to strict POSIX * build-aux/gitlog-to-changelog, build-aux/update-copyright: * doc/misc/texinfo.tex, lib/acl-internal.c, lib/acl-internal.h: * lib/binary-io.h, lib/dirent.in.h, lib/dirfd.c, lib/dup2.c: * lib/fcntl.c, lib/fdopendir.c, lib/mktime.c, lib/openat-proc.c: * lib/sig2str.h, lib/stdint.in.h, m4/dirfd.m4, m4/dup2.m4: * m4/fcntl.m4, m4/utimes.m4: Copy from gnulib. * m4/gnulib-comp.m4: Regenerate.
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/* dirfd.c -- return the file descriptor associated with an open DIR*
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Copyright (C) 2001, 2006, 2008-2016 Free Software Foundation, Inc.
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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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/* Written by Jim Meyering. */
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#include <config.h>
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#include <dirent.h>
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#include <errno.h>
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#ifdef __KLIBC__
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# include <stdlib.h>
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# include <io.h>
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static struct dirp_fd_list
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{
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DIR *dirp;
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int fd;
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struct dirp_fd_list *next;
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} *dirp_fd_start = NULL;
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/* Register fd associated with dirp to dirp_fd_list. */
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int
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_gl_register_dirp_fd (int fd, DIR *dirp)
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{
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struct dirp_fd_list *new_dirp_fd = malloc (sizeof *new_dirp_fd);
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if (!new_dirp_fd)
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return -1;
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new_dirp_fd->dirp = dirp;
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new_dirp_fd->fd = fd;
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new_dirp_fd->next = dirp_fd_start;
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dirp_fd_start = new_dirp_fd;
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return 0;
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}
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/* Unregister fd from dirp_fd_list with closing it */
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void
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_gl_unregister_dirp_fd (int fd)
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{
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struct dirp_fd_list *dirp_fd;
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struct dirp_fd_list *dirp_fd_prev;
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for (dirp_fd_prev = NULL, dirp_fd = dirp_fd_start; dirp_fd;
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dirp_fd_prev = dirp_fd, dirp_fd = dirp_fd->next)
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{
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if (dirp_fd->fd == fd)
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{
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if (dirp_fd_prev)
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dirp_fd_prev->next = dirp_fd->next;
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else /* dirp_fd == dirp_fd_start */
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dirp_fd_start = dirp_fd_start->next;
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close (fd);
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free (dirp_fd);
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break;
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}
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}
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}
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#endif
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int
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dirfd (DIR *dir_p)
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{
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int fd = DIR_TO_FD (dir_p);
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if (fd == -1)
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#ifndef __KLIBC__
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errno = ENOTSUP;
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#else
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{
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struct dirp_fd_list *dirp_fd;
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for (dirp_fd = dirp_fd_start; dirp_fd; dirp_fd = dirp_fd->next)
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if (dirp_fd->dirp == dir_p)
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return dirp_fd->fd;
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errno = EINVAL;
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}
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#endif
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return fd;
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}
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