diff options
author | Chris Johns <chrisj@rtems.org> | 2009-10-08 07:07:36 +0000 |
---|---|---|
committer | Chris Johns <chrisj@rtems.org> | 2009-10-08 07:07:36 +0000 |
commit | eb649786c8528f349a39b35ae2965e3f874e2088 (patch) | |
tree | 194f40f18f42b9f12ee58df2bee39b0e7d7a4cc3 /cpukit/libcsupport/src/statvfs.c | |
parent | Regenerate (diff) | |
download | rtems-eb649786c8528f349a39b35ae2965e3f874e2088.tar.bz2 |
2009-10-08 Chris Johns <chrisj@rtems.org>
* Makefile.am, preinstall.am: Added statvfs.h.
* libcsupport/Makefile.am: Add statvfs.c.
* libcsupport/include/sys/statvfs.h, libcsupport/src/statvfs.c:
New.
* libcsupport/include/rtems/libio.h: Add a file system handler for
the statvfs call.
* libfs/src/devfs/devfs_init.c, libfs/src/dosfs/msdos_init.c,
libfs/src/imfs/imfs_init.c, libfs/src/nfsclient/src/nfs.c: Set the
statvfs handler to NULL.
* include/rtems/fs.h: Add a second node access field for the RFS
file system to hold a directory offset while the existing field
holds the inode number. This save a rescan of the directory when
working with directories.
* libblock/include/rtems/bdbuf.h: Added references and user fields
to the buffer descriptor.
* libblock/src/bdbuf.c: Added dynamic buffer support for different
block sizes. Fixed a number of bugs.
* libblock/src/blkdev.c: Release the disk device on an error.
* libblock/src/diskdevs.c: Set the block size to the media block
size during initialisation of the disk device.
* libblock/src/flashdisk.c, libblock/src/nvdisk.c,
libblock/src/ramdisk.c: Updated the drivers to handle variable
block sizes.
* libfs/src/dosfs/fat.c, libfs/src/dosfs/fat.h: Release any
buffers when an error occurs. The FAT buffer layer hangs onto a
single buffer while mounted. This should be fixed.
* sapi/inline/rtems/chain.inl: Added rtems_chain_set_off_chain,
rtems_chain_is_node_off_chain, and rtems_chain_previous.
* score/inline/rtems/score/chain.inl: Added _Chain_Set_off_chain,
and _Chain_Is_node_off_chain.
* libmisc/shell/main_ln.c, libmisc/shell/main_mknod.c,
libmisc/shell/mknod-pack_dev.c, libmisc/shell/mknod-pack_dev.h:
New shell commands.
* libmisc/Makefile.am, libmisc/shell/shellconfig.h: Added ln and
mknod commands.
* libmisc/shell/hexdump-display.c: Fixed the reopen bug which
showed up as a free with a bad pointer.
* libmisc/shell/main_mount.c: List the user adding file system
when listing the available file systems to mount.
* libmisc/shell/utils-cp.c: Remove the fixed static copy buffer
and use a large dynamic buffer.
* score/inline/rtems/score/address.inl, score/src/coremsgsubmit.c,
score/src/objectallocate.c, score/src/objectfree.c: Remove
warnings.
Diffstat (limited to '')
-rw-r--r-- | cpukit/libcsupport/src/statvfs.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/statvfs.c b/cpukit/libcsupport/src/statvfs.c new file mode 100644 index 0000000000..bd6827fe76 --- /dev/null +++ b/cpukit/libcsupport/src/statvfs.c @@ -0,0 +1,60 @@ +/* + * COPYRIGHT (c) 2009 Chris Johns <chrisj@rtems.org> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ +/* + * The statvfs as defined by the SUS: + * http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/statvfs.h.html + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/libio_.h> +#include <rtems/seterr.h> + +#include <sys/statvfs.h> + +/* + * Data structures and routines private to mount/unmount pair. + */ +extern rtems_chain_control rtems_filesystem_mount_table_control; + +int +statvfs (const char *path, struct statvfs *sb) +{ + rtems_filesystem_location_info_t loc; + rtems_filesystem_location_info_t *fs_mount_root; + rtems_filesystem_mount_table_entry_t *mt_entry; + int result; + + /* + * Get + * The root node of the mounted filesytem. + * The node for the directory that the fileystem is mounted on. + * The mount entry that is being refered to. + */ + + if ( rtems_filesystem_evaluate_path( path, strlen( path ), 0x0, &loc, true ) ) + return -1; + + mt_entry = loc.mt_entry; + fs_mount_root = &mt_entry->mt_fs_root; + + if ( !fs_mount_root->ops->statvfs_h ) + rtems_set_errno_and_return_minus_one( ENOTSUP ); + + memset (sb, 0, sizeof (struct statvfs)); + + result = ( fs_mount_root->ops->statvfs_h )( fs_mount_root, sb ); + + rtems_filesystem_freenode( &loc ); + + return result; +} |