diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/readlinkat.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/readlinkat.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/readlinkat.c b/sysdeps/unix/sysv/linux/readlinkat.c index 42c3877bd7..c2f21ee4ca 100644 --- a/sysdeps/unix/sysv/linux/readlinkat.c +++ b/sysdeps/unix/sysv/linux/readlinkat.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2006 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 @@ -24,6 +24,7 @@ #include <string.h> #include <sysdep.h> #include <unistd.h> +#include <kernel-features.h> /* Read the contents of the symbolic link PATH relative to FD into no @@ -35,6 +36,24 @@ readlinkat (fd, path, buf, len) char *buf; size_t len; { + int result; + +#ifdef __NR_readlinkat +# ifndef __ASSUME_ATFCTS + if (__have_atfcts >= 0) +# endif + { + result = INLINE_SYSCALL (readlinkat, 4, fd, path, buf, len); +# ifndef __ASSUME_ATFCTS + if (result == -1 && errno == ENOSYS) + __have_atfcts = -1; + else +# endif + return result; + } +#endif + +#ifndef __ASSUME_ATFCTS char *pathbuf = NULL; if (fd != AT_FDCWD && path[0] != '/') @@ -57,7 +76,7 @@ readlinkat (fd, path, buf, len) INTERNAL_SYSCALL_DECL (err); - int result = INTERNAL_SYSCALL (readlink, err, 3, path, buf, len); + result = INTERNAL_SYSCALL (readlink, err, 3, path, buf, len); if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) { @@ -66,4 +85,5 @@ readlinkat (fd, path, buf, len) } return result; +#endif } |