diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/fexecve.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/fexecve.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/fexecve.c b/sysdeps/unix/sysv/linux/fexecve.c index 1800d6402b..3560b711ca 100644 --- a/sysdeps/unix/sysv/linux/fexecve.c +++ b/sysdeps/unix/sysv/linux/fexecve.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1994-2016 Free Software Foundation, Inc. +/* Copyright (C) 1994-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -19,8 +19,13 @@ #include <stddef.h> #include <stdio.h> #include <unistd.h> +#include <fcntl.h> #include <sys/stat.h> +#include <sysdep.h> +#include <sys/syscall.h> +#include <kernel-features.h> + /* Execute the file FD refers to, overlaying the running program image. ARGV and ENVP are passed to the new program, as for `execve'. */ @@ -33,6 +38,16 @@ fexecve (int fd, char *const argv[], char *const envp[]) return -1; } +#ifdef __NR_execveat + /* Avoid implicit array coercion in syscall macros. */ + INLINE_SYSCALL (execveat, 5, fd, "", &argv[0], &envp[0], AT_EMPTY_PATH); +# ifndef __ASSUME_EXECVEAT + if (errno != ENOSYS) + return -1; +# endif +#endif + +#ifndef __ASSUME_EXECVEAT /* We use the /proc filesystem to get the information. If it is not mounted we fail. */ char buf[sizeof "/proc/self/fd/" + sizeof (int) * 3]; @@ -50,6 +65,7 @@ fexecve (int fd, char *const argv[], char *const envp[]) save = ENOSYS; __set_errno (save); +#endif return -1; } |