src/process/fexecve.c

   1 #define _GNU_SOURCE
   2 #include <unistd.h>
   3 #include <errno.h>
   4 #include <fcntl.h>
   5 #include "syscall.h"
   6
   7 int fexecve(int fd, char *const argv[], char *const envp[])
   8 {
   9         int r = __syscall(SYS_execveat, fd, "", argv, envp, AT_EMPTY_PATH);
  10         if (r != -ENOSYS) return __syscall_ret(r);
  11         char buf[15 + 3*sizeof(int)];
  12         __procfdname(buf, fd);
  13         execve(buf, argv, envp);
  14         if (errno == ENOENT) errno = EBADF;
  15         return -1;
  16 }