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-.TH ACCESS 3
-.SH NAME
-access \- determine accessibility of file
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.B
-int access(char *name, int mode)
-.SH DESCRIPTION
-.I Access
-evaluates the given
-file
-.I name
-for accessibility.
-If \fImode\fL&4\fR
-is nonzero,
-read permission is expected;
-if \fImode\fL&2\fR,
-write permission;
-if \fImode\fL&1\fR,
-execute permission.
-If \fImode\fL==0\fR,
-the file merely need exist.
-In any case
-all directories leading to the file
-must permit searches.
-Zero is returned if the desired access is permitted,
-\-1 if not.
-.PP
-Only access for open is checked.
-A file may look executable, but
-.IR exec (3)
-will fail unless it is in proper format.
-.PP
-The include file
-.F <libc.h>
-defines
-.BR AEXIST =0,
-.BR AEXEC =1,
-.BR AWRITE =2,
-and
-.BR AREAD =4.
-.PP
-.SH SOURCE
-.B /usr/local/plan9/src/libc/9sys/access.c
-.SH SEE ALSO
-.IR stat (3)
-.SH DIAGNOSTICS
-Sets
-.IR errstr .
-.SH BUGS
-Since file permissions are checked by the server and group information
-is not known to the client,
-.I access
-must open the file to check permissions.
-(It calls
-.IR stat (3)
-to check simple existence.)