diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/xmknodat.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/xmknodat.c | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/sysdeps/unix/sysv/linux/xmknodat.c b/sysdeps/unix/sysv/linux/xmknodat.c index 9332ae683e..d6cb4ed1be 100644 --- a/sysdeps/unix/sysv/linux/xmknodat.c +++ b/sysdeps/unix/sysv/linux/xmknodat.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 @@ -25,9 +25,11 @@ #include <sys/sysmacros.h> #include <sysdep.h> +#include <kernel-features.h> #include <sys/syscall.h> #include <bp-checks.h> + /* Create a device file named PATH relative to FD, with permission and special bits MODE and device number DEV (which can be constructed from major and minor device numbers with the `makedev' macro above). */ @@ -40,6 +42,30 @@ __xmknodat (int vers, int fd, const char *file, mode_t mode, dev_t *dev) return -1; } + /* We must convert the value to dev_t type used by the kernel. */ + unsigned long long int k_dev = (*dev) & ((1ULL << 32) - 1); + if (k_dev != *dev) + { + __set_errno (EINVAL); + return -1; + } + +#ifdef __NR_mknodat +# ifndef __ASSUME_ATFCTS + if (__have_atfcts >= 0) +# endif + { + int res = INLINE_SYSCALL (mknodat, 4, fd, file, mode, k_dev); +# ifndef __ASSUME_ATFCTS + if (res == -1 && errno == ENOSYS) + __have_atfcts = -1; + else +# endif + return res; + } +#endif + +#ifndef __ASSUME_ATFCTS char *buf = NULL; if (fd != AT_FDCWD && file[0] != '/') @@ -60,16 +86,9 @@ __xmknodat (int vers, int fd, const char *file, mode_t mode, dev_t *dev) file = buf; } - /* We must convert the value to dev_t type used by the kernel. */ - unsigned long long int k_dev = (*dev) & ((1ULL << 32) - 1); - if (k_dev != *dev) - { - __set_errno (EINVAL); - return -1; - } - return INLINE_SYSCALL (mknod, 3, CHECK_STRING (file), mode, (unsigned int) k_dev); +#endif } libc_hidden_def (__xmknodat) |