diff options
Diffstat (limited to 'pasta.c')
| -rw-r--r-- | pasta.c | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -40,6 +40,7 @@ #include <arpa/inet.h> #include <netinet/in.h> #include <net/ethernet.h> +#include <sys/prctl.h> #include <sys/syscall.h> #include <linux/magic.h> @@ -189,6 +190,10 @@ static int pasta_spawn_cmd(void *arg) size_t conf_hostname_len; sigset_t set; + /* If the parent dies with an error, so should we */ + if (prctl(PR_SET_PDEATHSIG, SIGKILL)) + die_perror("Couldn't set PR_SET_PDEATHSIG"); + /* We run in a detached PID and mount namespace: mount /proc over */ if (mount("", "/proc", "proc", 0, NULL)) warn_perror("Couldn't mount /proc"); @@ -215,6 +220,12 @@ static int pasta_spawn_cmd(void *arg) sigaddset(&set, SIGUSR1); sigwaitinfo(&set, NULL); + /* Once exec()ed this process is more valuable, and easier to see and + * clean up. Let us outlive our parent now. + */ + if (prctl(PR_SET_PDEATHSIG, 0)) + die_perror("Couldn't clear PR_SET_PDEATHSIG"); + execvp(a->exe, a->argv); die_perror("Failed to start command or shell"); |