[HDFS-15910] Replace bzero with explicit_bzero for better safety

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.2.2
• Fix Version/s: 3.3.1, 3.4.0
• Component/s: libhdfs++
• Labels: pull-request-available
• Hadoop Flags: Reviewed
• Assignee: Gautham Banasandra
• Reporter: Gautham Banasandra
• Due: 21/Mar/21
• Created: 21/Mar/21 07:03
• Updated: 24/Sep/21 20:58
• Resolved: 23/Mar/21 16:58

Description

It is better to always use explicit_bzero since it guarantees that the buffer will be cleared irrespective of the compiler optimizations - https://man7.org/linux/man-pages/man3/bzero.3.html.

Issue Links

• breaks: HDFS-15977 Call explicit_bzero only if it is available
• is a child of: HDFS-15917 Make HDFS native client more secure
• links to: GitHub Pull Request #2793