sys_rt_sigprocmask
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## Name

sys_rt_sigprocmask — change the list of currently blocked signals

## Synopsis

`long sys_rt_sigprocmask (` | int how,
| sigset_t __user * nset,
| sigset_t __user * oset,
| size_t sigsetsize`)`;

## Arguments

`how`

  whether to add, remove, or set signals

`nset`

  stores pending signals

`oset`

  previous value of signal mask if non-null

`sigsetsize`

  size of sigset_t type

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