Jeremy Soller
50 lines
957 B
C
50 lines
957 B
C
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
|
|
int execv(const char *path, char *const *argv);
|
|
|
|
int execl(const char *path, const char* argv0, ...)
|
|
{
|
|
int argc;
|
|
va_list ap;
|
|
va_start(ap, argv0);
|
|
for (argc = 1; va_arg(ap, const char*); argc++);
|
|
va_end(ap);
|
|
{
|
|
int i;
|
|
char *argv[argc+1];
|
|
va_start(ap, argv0);
|
|
argv[0] = (char *)argv0;
|
|
for (i = 1; i < argc; i++) {
|
|
argv[i] = va_arg(ap, char *);
|
|
}
|
|
argv[i] = NULL;
|
|
va_end(ap);
|
|
return execv(path, argv);
|
|
}
|
|
}
|
|
|
|
int execve(const char *path, char *const *argv, char *const *envp);
|
|
|
|
int execle(const char *path, const char* argv0, ...)
|
|
{
|
|
int argc;
|
|
va_list ap;
|
|
va_start(ap, argv0);
|
|
for (argc = 1; va_arg(ap, const char *); argc++);
|
|
va_end(ap);
|
|
{
|
|
int i;
|
|
char *argv[argc+1];
|
|
char **envp;
|
|
va_start(ap, argv0);
|
|
argv[0] = (char *)argv0;
|
|
for (i = 1; i <= argc; i++) {
|
|
argv[i] = va_arg(ap, char *);
|
|
}
|
|
envp = va_arg(ap, char **);
|
|
va_end(ap);
|
|
return execve(path, argv, envp);
|
|
}
|
|
}
|