71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/* Test the access rights of a file.
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Copyright (C) 2019-2025 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#if defined _WIN32 && !defined __CYGWIN__
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# include <io.h>
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#endif
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int
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access (const char *file, int mode)
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#undef access
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{
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int ret;
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#if defined _WIN32 && !defined __CYGWIN__
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if ((mode & X_OK) != 0)
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mode = (mode & ~X_OK) | R_OK;
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ret = _access (file, mode);
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#else
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ret = access (file, mode);
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#endif
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#if (defined _WIN32 && !defined __CYGWIN__) || ACCESS_TRAILING_SLASH_BUG
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# if defined _WIN32 && !defined __CYGWIN__
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if (ret == 0 || errno == EINVAL)
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# else
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if (ret == 0)
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# endif
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{
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size_t file_len = strlen (file);
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if (file_len > 0 && file[file_len - 1] == '/')
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{
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struct stat st;
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if (stat (file, &st) == 0)
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{
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if (! S_ISDIR (st.st_mode))
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{
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errno = ENOTDIR;
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return -1;
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}
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}
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else
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return (mode == F_OK && errno == EOVERFLOW ? 0 : -1);
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}
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}
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#endif
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return ret;
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}
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