Objective

Implement pipe_chain, a compact pipeline executor for already-tokenized commands.

Steps

• Create pipe_chain.c.
• Expose int pipe_chain(char **cmds[]);.
• cmds is a NULL-terminated array of commands.
• Each command is an argv-style NULL-terminated array ready to pass to execvp.
• Run every command in order and connect command N standard output to command N+1 standard input.
• Wait for every child process before returning.
• Return 0 when the pipeline was launched and waited successfully.
• Return 1 if a system call needed by the pipeline fails.
• Close all pipe file descriptors in parent and child processes as soon as they are no longer needed.

Objective

Implement pipe_chain, a compact pipeline executor for already-tokenized commands.

Steps

• Create pipe_chain.c.
• Expose int pipe_chain(char **cmds[]);.
• cmds is a NULL-terminated array of commands.
• Each command is an argv-style NULL-terminated array ready to pass to execvp.
• Run every command in order and connect command N standard output to command N+1 standard input.
• Wait for every child process before returning.
• Return 0 when the pipeline was launched and waited successfully.
• Return 1 if a system call needed by the pipeline fails.
• Close all pipe file descriptors in parent and child processes as soon as they are no longer needed.