Movatterモバイル変換

ibv_is_fork_initialized(3) — Linux manual page

IBV_IS_...TIALIZED(3) Libibverbs Programmer’s ManualIBV_IS_...TIALIZED(3)

NAME        top

       ibv_is_fork_initialized - check if fork support (ibv_fork_init) is       enabled

SYNOPSIS        top

              #include <infiniband/verbs.h>              enum ibv_fork_status {                  IBV_FORK_DISABLED,                  IBV_FORK_ENABLED,                  IBV_FORK_UNNEEDED,              };              enum ibv_fork_status ibv_is_fork_initialized(void);

DESCRIPTION        top

ibv_is_fork_initialized()checks whether libibverbsfork()support       was enabled through theibv_fork_init()verb.

RETURN VALUE        top

ibv_is_fork_initialized()returns IBV_FORK_DISABLED if fork       support is disabled, or IBV_FORK_ENABLED if enabled.       IBV_FORK_UNNEEDED return value indicates that the kernel copies       DMA pages on fork, hence a call toibv_fork_init()is unneeded.

NOTES        top

       The IBV_FORK_UNNEEDED return value takes precedence over       IBV_FORK_DISABLED and IBV_FORK_ENABLED.  If the kernel supports       copy-on-fork for DMA pages then IBV_FORK_UNNEEDED will be returned       regardless of whetheribv_fork_init()was called or not.

SEE ALSO        top

fork(2),ibv_fork_init(3)

AUTHOR        top

       Gal Pressman ⟨galpress@amazon.com⟩

COLOPHON        top

       This page is part of therdma-core (RDMA Core Userspace Libraries       and Daemons) project.  Information about the project can be found       at ⟨https://github.com/linux-rdma/rdma-core⟩.  If you have a bug       report for this manual page, send it to       linux-rdma@vger.kernel.org.  This page was obtained from the       project's upstream Git repository       ⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11.  (At       that time, the date of the most recent commit that was found in       the repository was 2025-08-04.)  If you discover any rendering       problems in this HTML version of the page, or you believe there is       a better or more up-to-date source for the page, or you have       corrections or improvements to the information in this COLOPHON       (which isnot part of the original manual page), send a mail to       man-pages@man7.orglibibverbs                      2020-10-09IBV_IS_...TIALIZED(3)

HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH.