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serenity/Base/usr/share/man/man2/shbuf_allow_pid.md
Andreas Kling f72e5bbb17 Kernel+LibC: Rename shared buffer syscalls to use a prefix 
This feels a lot more consistent and Unixy:

    create_shared_buffer()   => shbuf_create()
    share_buffer_with()      => shbuf_allow_pid()
    share_buffer_globally()  => shbuf_allow_all()
    get_shared_buffer()      => shbuf_get()
    release_shared_buffer()  => shbuf_release()
    seal_shared_buffer()     => shbuf_seal()
    get_shared_buffer_size() => shbuf_get_size()

Also, "shared_buffer_id" is shortened to "shbuf_id" all around.
2020-02-28 12:55:58 +01:00

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Name

shbuf_allow_pid - allow another process to map a shareable buffer

Synopsis

#include <SharedBuffer.h>

int shbuf_allow_pid(int shbuf_id, pid_t peer_pid);

Description

Gives the process with PID peer_pid permission to map the shareable buffer with ID shbuf_id.

Return value

On success, returns 0. Otherwise, returns -1 and errno is set.

Errors

  • EINVAL: peer_pid is invalid, or shbuf_id is not a valid ID.
  • EPERM: The calling process does not have access to the buffer with shbuf_id.
  • ESRCH: No process with PID peer_pid is found.

See also