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 <[email protected]> --- proc.c | 29 +++++++++++++++++++++++++++++ proc.h | 1 + 2 files changed, 30 insertions(+) diff --git a/proc.c b/proc.c index 672f00d..0937159 100644 --- a/proc.c +++ b/proc.c @@ -1,5 +1,6 @@ #define _GNU_SOURCE #include <sched.h> +#include <sys/wait.h> #include <sys/types.h> #include <sys/resource.h> #include <unistd.h> @@ -79,3 +80,31 @@ ssize_t proc_get_cmdline(unsigned int pid, char *cmdline, size_t len) return ret; } + +int proc_exec(char *proc, char **argv) +{ + int status; + pid_t pid; + + pid = fork(); + if (pid < 0) { + perror("fork"); + return -1; + } + if (!pid) { + if (execvp(proc, argv) < 0) + fprintf(stderr, "Failed to exec: %s\n", proc); + + _exit(1); + } + + if (waitpid(pid, &status, 0) < 0) { + perror("waitpid"); + return -2; + } + + if (!WIFEXITED(status)) + return -WEXITSTATUS(status); + + return 0; +} diff --git a/proc.h b/proc.h index 996ce06..a4b5443 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(char *proc, char **argv); #endif /* PROC_H */ -- 2.6.3 -- You received this message because you are subscribed to the Google Groups "netsniff-ng" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
