diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/generic/openat.c | 69 | ||||
| -rw-r--r-- | sysdeps/generic/openat64.c | 69 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/device-nrs.h | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/openat.c | 110 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/openat64.c | 4 |
5 files changed, 257 insertions, 1 deletions
diff --git a/sysdeps/generic/openat.c b/sysdeps/generic/openat.c new file mode 100644 index 0000000..b058bcb --- /dev/null +++ b/sysdeps/generic/openat.c @@ -0,0 +1,69 @@ +/* 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 <errno.h> +#include <fcntl.h> +#include <stdarg.h> +#include <stddef.h> +#include <sys/stat.h> + +/* Open FILE with access OFLAG. Interpret relative paths relative to + the directory associated with FD. If OFLAG includes O_CREAT, a + third argument is the file protection. */ +int +openat (fd, file, oflag) + int fd; + const char *file; + int oflag; +{ + int mode; + + if (file == NULL) + { + __set_errno (EINVAL); + return -1; + } + + if (file[0] != '/') + { + /* Check FD is associated with a directory. */ + struct stat64 st; + if (__fxstat64 (_STAT_VER, fd, &st) != 0) + return -1; + + if (!S_ISDIR (st.st_mode)) + { + __set_errno (ENOTDIR); + return -1; + } + } + + if (oflag & O_CREAT) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, int); + va_end (arg); + } + + __set_errno (ENOSYS); + return -1; +} +stub_warning (openat) + +#include <stub-tag.h> diff --git a/sysdeps/generic/openat64.c b/sysdeps/generic/openat64.c new file mode 100644 index 0000000..82575df --- /dev/null +++ b/sysdeps/generic/openat64.c @@ -0,0 +1,69 @@ +/* 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 <errno.h> +#include <fcntl.h> +#include <stdarg.h> +#include <stddef.h> +#include <sys/stat.h> + +/* Open FILE with access OFLAG. Interpret relative paths relative to + the directory associated with FD. If OFLAG includes O_CREAT, a + third argument is the file protection. */ +int +openat64 (fd, file, oflag) + int fd; + const char *file; + int oflag; +{ + int mode; + + if (file == NULL) + { + __set_errno (EINVAL); + return -1; + } + + if (file[0] != '/') + { + /* Check FD is associated with a directory. */ + struct stat64 st; + if (__fxstat64 (_STAT_VER, fd, &st) != 0) + return -1; + + if (!S_ISDIR (st.st_mode)) + { + __set_errno (ENOTDIR); + return -1; + } + } + + if (oflag & O_CREAT) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, int); + va_end (arg); + } + + __set_errno (ENOSYS); + return -1; +} +stub_warning (openat64) + +#include <stub-tag.h> diff --git a/sysdeps/unix/sysv/linux/device-nrs.h b/sysdeps/unix/sysv/linux/device-nrs.h index 6b6578e..b30c1db 100644 --- a/sysdeps/unix/sysv/linux/device-nrs.h +++ b/sysdeps/unix/sysv/linux/device-nrs.h @@ -1,5 +1,5 @@ /* Device numbers of devices used in the implementation. Linux version. - Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Copyright (C) 2000, 2001, 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 @@ -26,6 +26,10 @@ #define DEV_NULL_MAJOR 1 #define DEV_NULL_MINOR 3 +/* /dev/full is (1,7). */ +#define DEV_FULL_MAJOR 1 +#define DEV_FULL_MINOR 7 + /* Pseudo tty slaves. For Linux we use the Unix98 ttys. We could also include the old BSD-style tty buts they should not be used and the extra test would only slow down correctly set up systems. If a diff --git a/sysdeps/unix/sysv/linux/openat.c b/sysdeps/unix/sysv/linux/openat.c new file mode 100644 index 0000000..a89f172 --- /dev/null +++ b/sysdeps/unix/sysv/linux/openat.c @@ -0,0 +1,110 @@ +/* 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 <errno.h> +#include <fcntl.h> +#include <stdarg.h> +#include <stddef.h> +#include <stdio.h> +#include <string.h> +#include <sys/stat.h> +#include <sysdep-cancel.h> + + +#ifndef OPENAT +# define OPENAT openat +# define MORE_OFLAGS 0 +#endif + +/* Open FILE with access OFLAG. Interpret relative paths relative to + the directory associated with FD. If OFLAG includes O_CREAT, a + third argument is the file protection. */ +int +OPENAT (fd, file, oflag) + int fd; + const char *file; + int oflag; +{ + char *buf = NULL; + + if (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; + } + + mode_t mode = 0; + if (oflag & O_CREAT) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, mode_t); + va_end (arg); + } + + INTERNAL_SYSCALL_DECL (err); + int res; + + if (SINGLE_THREAD_P) + res = INTERNAL_SYSCALL (open, err, 3, file, oflag | MORE_OFLAGS, mode); + else + { + int oldtype = LIBC_CANCEL_ASYNC (); + + res = INTERNAL_SYSCALL (open, err, 3, file, oflag | MORE_OFLAGS, mode); + + LIBC_CANCEL_RESET (oldtype); + } + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (res, err), 0)) + { + int errval = INTERNAL_SYSCALL_ERRNO (res, err); + if (buf != NULL && errval == ENOTDIR) + { + /* This can mean either the file desriptor is invalid or + /proc is not mounted. */ + struct stat64 st; + if (__fxstat64 (_STAT_VER, fd, &st) != 0) + /* errno is already set correctly. */ + goto out; + + /* If /proc is not mounted there is nothing we can do. */ + if (S_ISDIR (st.st_mode) + && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 + || !S_ISDIR (st.st_mode))) + errval = ENOSYS; + } + + __set_errno (errval); + } + + out: + return res; +} diff --git a/sysdeps/unix/sysv/linux/openat64.c b/sysdeps/unix/sysv/linux/openat64.c new file mode 100644 index 0000000..9e7a2b3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/openat64.c @@ -0,0 +1,4 @@ +#define OPENAT openat64 +#define MORE_OFLAGS O_LARGEFILE + +#include "openat.c" |