[PATCH v2 0/4] samples/bpf: simple fixes

[Taeung Song]

v2:
- in error cases, do return; instead of break; in loop

Hello,
This patchset fixes trivial things that I found
when testing 'samples/bpf/' sample code.
I'd appreciate it, if you review this.

Thanks,
Taeung

Taeung Song (4):
  samples/bpf: add missing <linux/if_vlan.h>
  samples/bpf: Check the result of system()
  samples/bpf: Check the error of write() and read()
  samples/bpf: add .gitignore file

 samples/bpf/.gitignore           | 49 ++++++++++++++++++++++++++++++++
 samples/bpf/parse_varlen.c       |  6 +---
 samples/bpf/test_overhead_user.c | 19 ++++++++++---
 samples/bpf/trace_event_user.c   | 27 ++++++++++++++++--
 4 files changed, 89 insertions(+), 12 deletions(-)
 create mode 100644 samples/bpf/.gitignore

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2.17.1