83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/*
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* $QNXLicenseC:
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* Copyright 2007, QNX Software Systems. All Rights Reserved.
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*
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* You must obtain a written license from and pay applicable license fees to QNX
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* Software Systems before you may reproduce, modify or distribute this software,
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* or any work that includes all or part of this software. Free development
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* licenses are available for evaluation and non-commercial purposes. For more
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* information visit http://licensing.qnx.com or email licensing@qnx.com.
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*
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* This file may contain contributions from others. Please review this entire
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* file for other proprietary rights or license notices, as well as the QNX
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* Development Suite License Guide at http://licensing.qnx.com/license-guide/
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* for other information.
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* $
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*/
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#ifdef __MINGW32__
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#include <lib/compat.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#ifdef __STDC__
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int (saccess)( struct stat *statbuf, int amode )
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#else
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int saccess(statbuf,amode)
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struct stat *statbuf;
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int amode;
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#endif
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{
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int lookat;
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if (amode & ~(R_OK|W_OK|X_OK)) {
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errno=EINVAL;
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return(-1);
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}
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if (amode & R_OK) {
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lookat = S_IROTH;
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if (statbuf->st_uid == getuid()) lookat = S_IRUSR;
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else if (statbuf->st_gid == getgid()) lookat = S_IRGRP;
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if ((statbuf->st_mode & lookat) == 0) {
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errno=EACCES;
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return(-1);
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}
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}
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if (amode & X_OK) {
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lookat = S_IXOTH;
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if (statbuf->st_uid == getuid()) lookat = S_IXUSR;
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else if (statbuf->st_gid == getgid()) lookat = S_IXGRP;
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if ((statbuf->st_mode & lookat) == 0) {
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errno=EACCES;
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return(-1);
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}
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}
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if (amode & W_OK) {
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lookat = S_IWOTH;
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if (statbuf->st_uid == getuid()) lookat = S_IWUSR;
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else if (statbuf->st_gid == getgid()) lookat = S_IWGRP;
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if ((statbuf->st_mode & lookat) == 0) {
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errno=EACCES;
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return(-1);
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}
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/* if looks like we are ok for write, but wait, this
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might be a read-only file system. Unfortunately,
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there is no call available to determine if this is
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a read-only file system. This situation requires a
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new call to the file system to fix. */
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}
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return(0);
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}
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