proc: Add function to execute process with argv list

Add proc_exec function which executes given process with
argv list via fork + execvp.

It allows to replace 'system' call approach which is used
for invoking cpp and securely extend it with additional options
like -D.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/proc.h b/proc.h
index 996ce06..9220b2a 100644
--- a/proc.h
+++ b/proc.h
@@ -7,5 +7,6 @@ extern void cpu_affinity(int cpu);
 extern int set_proc_prio(int prio);
 extern int set_sched_status(int policy, int priority);
 extern ssize_t proc_get_cmdline(unsigned int pid, char *cmdline, size_t len);
+extern int proc_exec(const char *proc, char *const argv[]);
 
 #endif /* PROC_H */