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Annotation of researchv10dc/man/man2/access.2, revision 1.1

1.1     ! root        1: .TH ACCESS 2
        !             2: .CT 2 dirs file_inq_creat secur
        !             3: .SH NAME
        !             4: access \(mi determine accessibility of file
        !             5: .SH SYNOPSIS
        !             6: .nf
        !             7: .B int access(name, mode)
        !             8: .B char *name;
        !             9: .fi
        !            10: .SH DESCRIPTION
        !            11: .I Access
        !            12: checks the given
        !            13: file
        !            14: .I name
        !            15: for accessibility.
        !            16: If \fImode\fL&4\fR
        !            17: is nonzero, read access is checked.
        !            18: If \fImode\fL&2\fR
        !            19: is nonzero, write access is checked.
        !            20: If \fImode\fL&1\fR
        !            21: is nonzero, execute access is checked.
        !            22: If \fImode\fL==\fR0,
        !            23: the file merely need exist.
        !            24: In any case
        !            25: all directories leading to the file
        !            26: must permit searches.
        !            27: 0 is returned if the access is permitted,,
        !            28: \-1 if not.
        !            29: .PP
        !            30: Permission is checked
        !            31: against the real userid and groupid of the process;
        !            32: this call is most useful in set-userid and set-groupid programs.
        !            33: .PP
        !            34: Only access bits are checked.
        !            35: A directory may be announced as writable by
        !            36: .IR access ,
        !            37: but an attempt to open it for writing will fail
        !            38: (although files may be created there);
        !            39: a file may look executable, but
        !            40: .IR exec (2)
        !            41: will fail unless it is in proper format.
        !            42: .PP
        !            43: If the userid of the process is the owner of the file
        !            44: access is determined by the three owner bits (0700).
        !            45: Otherwise, if the groupid of the process is the group
        !            46: of the file access is determined by the three group bits (0070).
        !            47: Otherwise access is determined by the three other bits (0007).
        !            48: .SH SEE ALSO
        !            49: .IR stat (2)
        !            50: .SH DIAGNOSTICS
        !            51: .BR EACCES ,
        !            52: .BR EFAULT ,
        !            53: .BR EIO ,
        !            54: .BR ELOOP ,
        !            55: .BR ENOENT ,
        !            56: .BR ENOTDIR ,
        !            57: .BR EROFS ,
        !            58: .BR ETXTBSY
        !            59: .SH BUGS
        !            60: On symbolic links permissions are irrelevant and
        !            61: .IR access
        !            62: returns nonsense.

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