#### Pre-Submission Checklist
- [X] Commit message has the format required by CONTRIBUTING guide
- [X] Commits are split per component (core, individual modules, libs, utils, 
...)
- [X] Each component has a single commit (if not, squash them into one commit)
- [X] Code is formatted with `clang-format` using the config file 
`.clang-format`
  from source code folder
- [X] No commits to README files for modules (changes must be done to docbook 
files
  in `doc/` subfolder, the README file is autogenerated)

#### Type Of Change
- [X] Small bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds new functionality)
- [ ] Breaking change (fix or feature that would change existing functionality)

#### Checklist:
<!-- Go over all points below, and after creating the PR, tick the 
checkboxes that apply -->
- [X] PR should be backported to stable branches
- [X] Tested changes locally
- [ ] Related to issue #XXXX (replace XXXX with an open issue number)

#### Description
`sem_wait` and `sem_trywait `POSIX semaphore functions can be interrupted by 
EINTR signal.
We need to re-attempt the lock if EINTR occurs.
Similar implementation to SYSV_SEM.
You can view, comment on, or merge this pull request online at:

  https://github.com/kamailio/kamailio/pull/4732

-- Commit Summary --

  * core: re-attempt the lock if EINTR occurs (POSIX_SEM)

-- File Changes --

    M src/core/lock_ops.h (28)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/4732.patchhttps://github.com/kamailio/kamailio/pull/4732.diff
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Reply to this email directly or view it on GitHub:
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