From e186c703dc073b8be95d0bf893bb8ebb127fe02b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 2 Dec 2005 21:55:54 +0000 Subject: * io/Makefile (routines): Add mknodat, xmknodat, mkdirat, mkfifoat. (static-only-routines): Add mknodat. * io/Versions [GLIBC_2.4]: Add mkdirat, mkfifoat, __xmknodat. * io/sys/stat.h: Declare mkditat, mknodat, mkfifoat, __xmknodat. Define mknodat inline function. * include/sys/stat.h: Add hidden proto for __xmknodat. * sysdeps/generic/mkdirat.c: New file. * sysdeps/generic/mkfifoat.c: New file. * sysdeps/generic/mknodat.c: New file. * sysdeps/generic/xmknodat.c: New file. * sysdeps/unix/mkfifoat.c: New file. * sysdeps/unix/sysv/linux/mkdirat.c: New file. * sysdeps/unix/sysv/linux/xmknodat.c: New file. * sysdeps/generic/xmknod.c: Add one more parameter check. --- sysdeps/unix/mkfifoat.c | 32 ++++++++++++++++ sysdeps/unix/sysv/linux/mkdirat.c | 66 +++++++++++++++++++++++++++++++++ sysdeps/unix/sysv/linux/xmknodat.c | 75 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 173 insertions(+) create mode 100644 sysdeps/unix/mkfifoat.c create mode 100644 sysdeps/unix/sysv/linux/mkdirat.c create mode 100644 sysdeps/unix/sysv/linux/xmknodat.c (limited to 'sysdeps/unix') diff --git a/sysdeps/unix/mkfifoat.c b/sysdeps/unix/mkfifoat.c new file mode 100644 index 0000000000..5c4da2a982 --- /dev/null +++ b/sysdeps/unix/mkfifoat.c @@ -0,0 +1,32 @@ +/* Copyright (C) 2005 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include + + +/* Create a new FIFO with permission bits MODE. But interpret + relative PATH names relative to the directory associated with FD. */ +int +mkfifoat (fd, file, mode) + int fd; + const char *file; + mode_t mode; +{ + dev_t dev = 0; + return __xmknodat (_MKNOD_VER, fd, file, mode | S_IFIFO, &dev); +} diff --git a/sysdeps/unix/sysv/linux/mkdirat.c b/sysdeps/unix/sysv/linux/mkdirat.c new file mode 100644 index 0000000000..367441b05b --- /dev/null +++ b/sysdeps/unix/sysv/linux/mkdirat.c @@ -0,0 +1,66 @@ +/* Copyright (C) 2005 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include +#include +#include +#include +#include + + +/* Create a new directory with permission bits MODE. But interpret + relative PATH names relative to the directory associated with FD. */ +int +mkdirat (fd, file, mode) + int fd; + const char *file; + mode_t mode; +{ + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + INTERNAL_SYSCALL_DECL (err); + int res = INTERNAL_SYSCALL (mkdir, err, 2, file, mode); + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (res, err), 0)) + { + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (res, err), fd, buf); + res = -1; + } + + return res; +} diff --git a/sysdeps/unix/sysv/linux/xmknodat.c b/sysdeps/unix/sysv/linux/xmknodat.c new file mode 100644 index 0000000000..9332ae683e --- /dev/null +++ b/sysdeps/unix/sysv/linux/xmknodat.c @@ -0,0 +1,75 @@ +/* Copyright (C) 2005 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +/* 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). */ +int +__xmknodat (int vers, int fd, const char *file, mode_t mode, dev_t *dev) +{ + if (vers != _MKNOD_VER) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + 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); +} + +libc_hidden_def (__xmknodat) -- cgit 1.4.1