man.postnix Miscellaneous man pages of Plan 9 related material

     ACCESS(2)                                               ACCESS(2)

     NAME
          access - determine accessibility of file

     SYNOPSIS
          #include <u.h>
          #include <libc.h>

          int access(char *name, int mode)

     DESCRIPTION
          Access evaluates the given file name for accessibility.  If
          mode&4 is nonzero, read permission is expected; if mode&2,
          write permission; if mode&1, execute permission.  If
          mode==0, the file merely need exist.  In any case all direc-
          tories leading to the file must permit searches.  Zero is
          returned if the desired access is permitted, -1 if not.

          Only access bits are checked.  A directory may be announced
          as writable by access, but an attempt to open it for writing
          will fail (although files may be created there); a file may
          look executable, but exec(2) will fail unless it is in
          proper format.

     SOURCE
          /sys/src/libc/9sys/access.c

     SEE ALSO
          stat(2)

     DIAGNOSTICS
          Sets errstr.

     Page 1                       Plan 9             (printed 4/23/24)