critical impact:

BSD signal functions - not supported; temporarily available (CrUn173)

Problem description

The sigvec function exists on Tru64 UNIX, but not on HP-UX. The sigblock and sigsetmask functions exist on both platforms, but will not be available in future HP-UX releases. These functions are available on a temporary basis in the Tru64 UNIX Migration Environment for HP-UX.

The Migration Environment contains Tru64 UNIX APIs, development tools, and commands and utilities to assist customers in migrating their applications from Tru64 UNIX to HP-UX.

The functions are BSD signal functions.

On HP-UX, sigvector is similar to sigvec. The sigvector function, however, uses a different approach for specifying whether or not interrupted system calls are restarted.

The sigvector, sigblock, and sigsetmask functions will not be available in future HP-UX releases because they use a 32-bit mask (1 bit per signal), and HP-UX has more than 32 signals. Therefore, the functions cannot control the behavior of all signals.

Identifiers

sigblock

sigsetmask

sigvec

See also

• Background information on Tru64 UNIX migration environment impacts
• Background information on signal specific issues impacts
• sigaction(2)
• sigblock(2)
• sigprocmask(2)
• sigsetmask(2)
• sigsuspend(2)
• sigvec(2)
• sigpause(3)

Solution description

The sigvec, sigblock, and sigsetmask functions are in the Tru64 UNIX Migration Environment for HP-UX.

Please note that the Migration Environment is temporary. For a long-term solution, use the POSIX signal functions instead. The following shows the mapping between the BSD and POSIX functions:

    BSD           POSIX
    ---           -----
    sigvec        sigaction
    sigblock      sigprocmask
    sigsetmask    sigprocmask
    sigpause      sigsuspend

See also

• sigaction(2)
• sigblock(2)
• sigprocmask(2)
• sigsetmask(2)
• sigsuspend(2)
• sigvector(2)
• sigpause(3C)
• Tru64 UNIX Migration Environment User's Guide

Problem summary