65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* VTreeFS - mount.c - by Alen Stojanov and David van Moolenbroek */
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#include "inc.h"
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/*===========================================================================*
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* fs_readsuper *
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*===========================================================================*/
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int fs_readsuper(void)
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{
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/* This function gets the root inode and sends back its details.
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*/
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struct inode *root;
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/* Get the device number, for stat requests. */
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fs_dev = fs_m_in.m_vfs_fs_readsuper.device;
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/* The VTreeFS must not be mounted as a root file system. */
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if (fs_m_in.m_vfs_fs_readsuper.flags & REQ_ISROOT)
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return EINVAL;
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/* Get the root inode and increase its reference count. */
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root = get_root_inode();
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ref_inode(root);
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/* The system is now mounted. Call the initialization hook. */
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if (vtreefs_hooks->init_hook != NULL)
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vtreefs_hooks->init_hook();
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/* Return the root inode's properties. */
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fs_m_out.m_fs_vfs_readsuper.inode = get_inode_number(root);
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fs_m_out.m_fs_vfs_readsuper.mode = root->i_stat.mode;
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fs_m_out.m_fs_vfs_readsuper.file_size = root->i_stat.size;
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fs_m_out.m_fs_vfs_readsuper.uid = root->i_stat.uid;
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fs_m_out.m_fs_vfs_readsuper.gid = root->i_stat.gid;
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fs_m_out.m_fs_vfs_readsuper.device = NO_DEV;
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fs_m_out.m_fs_vfs_readsuper.flags = RES_NOFLAGS;
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fs_mounted = TRUE;
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return OK;
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}
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/*===========================================================================*
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* fs_unmount *
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*===========================================================================*/
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int fs_unmount(void)
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{
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/* Unmount the file system.
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*/
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struct inode *root;
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/* Decrease the count of the root inode. */
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root = get_root_inode();
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put_inode(root);
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/* The system is unmounted. Call the cleanup hook. */
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if (vtreefs_hooks->cleanup_hook != NULL)
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vtreefs_hooks->cleanup_hook();
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/* We can now be shut down safely. */
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fs_mounted = FALSE;
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return OK;
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}
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