diff options
Diffstat (limited to 'newlib/libc/sys/linux/pathconf.c')
| -rw-r--r-- | newlib/libc/sys/linux/pathconf.c | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/newlib/libc/sys/linux/pathconf.c b/newlib/libc/sys/linux/pathconf.c deleted file mode 100644 index 796945971..000000000 --- a/newlib/libc/sys/linux/pathconf.c +++ /dev/null @@ -1,300 +0,0 @@ -/* Linux specific extensions to pathconf. - Copyright (C) 1991,95,96,98,99,2000,2001 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. */ - -/* Modified for newlib July 19, 2002 - Jeff Johnston */ - -#include <errno.h> -#include <stddef.h> -#include <unistd.h> -#include <limits.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/statfs.h> -#include <sys/statvfs.h> -#include <machine/weakalias.h> -#include "linux_fsinfo.h" - -/* The Linux kernel header mentioned this as a kind of generic value. */ -#define LINUX_LINK_MAX 127 - -static long int posix_pathconf (const char *path, int name); - - -/* Get file-specific information about descriptor FD. */ -long int -__pathconf (path, name) - const char *path; - int name; -{ - if (name == _PC_LINK_MAX) - { - struct statfs fsbuf; - - /* Determine the filesystem type. */ - if (__statfs (path, &fsbuf) < 0) - { - if (errno == ENOSYS) - /* not possible, return the default value. */ - return LINUX_LINK_MAX; - - /* Some error occured. */ - return -1; - } - - switch (fsbuf.f_type) - { - case EXT2_SUPER_MAGIC: - return EXT2_LINK_MAX; - - case MINIX_SUPER_MAGIC: - case MINIX_SUPER_MAGIC2: - return MINIX_LINK_MAX; - - case MINIX2_SUPER_MAGIC: - case MINIX2_SUPER_MAGIC2: - return MINIX2_LINK_MAX; - - case XENIX_SUPER_MAGIC: - return XENIX_LINK_MAX; - - case SYSV4_SUPER_MAGIC: - case SYSV2_SUPER_MAGIC: - return SYSV_LINK_MAX; - - case COH_SUPER_MAGIC: - return COH_LINK_MAX; - - case UFS_MAGIC: - case UFS_CIGAM: - return UFS_LINK_MAX; - - case REISERFS_SUPER_MAGIC: - return REISERFS_LINK_MAX; - - default: - return LINUX_LINK_MAX; - } - } - - return posix_pathconf (path, name); -} - -/* Get file-specific information about PATH. */ -static long int -posix_pathconf (const char *path, int name) -{ - if (path[0] == '\0') - { - __set_errno (ENOENT); - return -1; - } - - switch (name) - { - default: - __set_errno (EINVAL); - return -1; - - case _PC_LINK_MAX: -#ifdef LINK_MAX - return LINK_MAX; -#else - return -1; -#endif - - case _PC_MAX_CANON: -#ifdef MAX_CANON - return MAX_CANON; -#else - return -1; -#endif - - case _PC_MAX_INPUT: -#ifdef MAX_INPUT - return MAX_INPUT; -#else - return -1; -#endif - - case _PC_NAME_MAX: -#ifdef NAME_MAX - { - struct statfs buf; - int save_errno = errno; - - if (__statfs (path, &buf) < 0) - { - if (errno == ENOSYS) - { - errno = save_errno; - return NAME_MAX; - } - return -1; - } - else - { -#ifdef _STATFS_F_NAMELEN - return buf.f_namelen; -#else -# ifdef _STATFS_F_NAME_MAX - return buf.f_name_max; -# else - return NAME_MAX; -# endif -#endif - } - } -#else - return -1; -#endif - - case _PC_PATH_MAX: -#ifdef PATH_MAX - return PATH_MAX; -#else - return -1; -#endif - - case _PC_PIPE_BUF: -#ifdef PIPE_BUF - return PIPE_BUF; -#else - return -1; -#endif - - case _PC_CHOWN_RESTRICTED: -#ifdef _POSIX_CHOWN_RESTRICTED - return _POSIX_CHOWN_RESTRICTED; -#else - return -1; -#endif - - case _PC_NO_TRUNC: -#ifdef _POSIX_NO_TRUNC - return _POSIX_NO_TRUNC; -#else - return -1; -#endif - - case _PC_VDISABLE: -#ifdef _POSIX_VDISABLE - return _POSIX_VDISABLE; -#else - return -1; -#endif - - case _PC_SYNC_IO: -#ifdef _POSIX_SYNC_IO - return _POSIX_SYNC_IO; -#else - return -1; -#endif - - case _PC_ASYNC_IO: -#ifdef _POSIX_ASYNC_IO - { - /* AIO is only allowed on regular files and block devices. */ - struct stat64 st; - - if (stat64 (path, &st) < 0 - || (! S_ISREG (st.st_mode) && ! S_ISBLK (st.st_mode))) - return -1; - else - return 1; - } -#else - return -1; -#endif - - case _PC_PRIO_IO: -#ifdef _POSIX_PRIO_IO - return _POSIX_PRIO_IO; -#else - return -1; -#endif - - case _PC_SOCK_MAXBUF: -#ifdef SOCK_MAXBUF - return SOCK_MAXBUF; -#else - return -1; -#endif - - case _PC_FILESIZEBITS: -#ifdef FILESIZEBITS - return FILESIZEBITS; -#else - /* We let platforms with larger file sizes overwrite this value. */ - return 32; -#endif - - case _PC_REC_INCR_XFER_SIZE: - /* XXX It is not entirely clear what the limit is supposed to do. - What is incremented? */ - return -1; - - case _PC_REC_MAX_XFER_SIZE: - /* XXX It is not entirely clear what the limit is supposed to do. - In general there is no top limit of the number of bytes which - case be transported at once. */ - return -1; - - case _PC_REC_MIN_XFER_SIZE: - { - /* XXX It is not entirely clear what the limit is supposed to do. - I assume this is the block size of the filesystem. */ - struct statvfs64 sv; - - if (__statvfs64 (path, &sv) < 0) - return -1; - return sv.f_bsize; - } - - case _PC_REC_XFER_ALIGN: - { - /* XXX It is not entirely clear what the limit is supposed to do. - I assume that the number should reflect the minimal block - alignment. */ - struct statvfs64 sv; - - if (__statvfs64 (path, &sv) < 0) - return -1; - return sv.f_frsize; - } - - case _PC_ALLOC_SIZE_MIN: - { - /* XXX It is not entirely clear what the limit is supposed to do. - I assume that the number should reflect the minimal block - alignment. */ - struct statvfs64 sv; - - if (__statvfs64 (path, &sv) < 0) - return -1; - return sv.f_frsize; - } - - case _PC_SYMLINK_MAX: - /* In general there are no limits. If a system has one it should - overwrite this case. */ - return -1; - } -} - -weak_alias (__pathconf, pathconf) |