OPENTEMP(3)                                           OPENTEMP(3)

     NAME
          opentemp - create and open a uniquely-named file

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

          int opentemp(char *template, int mode)

     DESCRIPTION
          Opentemp replaces template by a unique file name, and
          returns the address of the template.  The template should
          look like a file name with eleven trailing `X's.  The `X's
          are replaced by a letter followed by the current process id.
          Letters from `a' to `z' are tried until the name of a file
          that does not yet exist (see access(2)) is generated.
          Opentemp then opens the file for the given mode and returns
          the file descriptor.  Most calls should use a mode of
          ORDWR|ORCLOSE.

          If no such name can be generated, opentemp returns -1.

          Opentemp avoids races.  Two simultaneous calls to opentemp
          will never return the same name.

     SOURCE
          /usr/local/plan9/src/lib9/opentemp.c

     SEE ALSO
          create in open(3)

     Page 1                       Plan 9             (printed 11/6/25)