What is the difference between using system() to execute a binary and using the combination of fork/execvp.
Is there any security/portablility/performance difference.
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What is the difference between using system() to execute a binary and using the combination of fork/execvp.
Is there any security/portablility/performance difference.
System also uses a
fork/exec… combination. If you dofork/execyourself you can execute parallel to your running process, whilesystemis blocking (includes thewait). Alsosystemexecutes the command not direct, but via a shell (which makes problems with setuid bit) andsystemblocks/ignores certain signals (SIGINT, SIGCHILD, SIGQUIT).