SEGBRK(2)                                               SEGBRK(2)

     NAME
          segbrk - change memory allocation

     SYNOPSIS
          int   segbrk(void *saddr, void *addr)

     DESCRIPTION
          Segbrk sets the system's idea of the lowest unused location
          of a segment to addr rounded up to the next multiple of 4
          bytes.  The segment is identified by saddr which may be any
          valid address within the segment.

          A call to segbrk with a zero addr argument returns the
          address of the top of bss.

          The system will prevent segments from overlapping and will
          not allow the text and data segment lengths to be altered.

     SEE ALSO
          segattach(2), segflush(2)
          /proc/*/segment

     DIAGNOSTICS
          Sets errstr.

     Page 1                       Plan 9            (printed 10/24/25)