1 #define _GNU_SOURCE
2 #include <unistd.h>
3 #include <errno.h>
4 #include <fcntl.h>
5 #include "syscall.h"
6 
fexecve(int fd,char * const argv[],char * const envp[])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 }
17