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include/linux/coda_linux.h
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/* * Coda File System, Linux Kernel module * * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University * Linux modifications (C) 1996, Peter J. Braam * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University * * Carnegie Mellon University encourages users of this software to * contribute improvements to the Coda project. */ #ifndef _LINUX_CODA_FS #define _LINUX_CODA_FS #include <linux/kernel.h> #include <linux/param.h> #include <linux/mm.h> #include <linux/vmalloc.h> #include <linux/slab.h> #include <linux/wait.h> #include <linux/types.h> #include <linux/fs.h> #include <linux/coda_fs_i.h> /* operations */ |
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extern const struct inode_operations coda_dir_inode_operations; extern const struct inode_operations coda_file_inode_operations; extern const struct inode_operations coda_ioctl_inode_operations; |
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extern const struct address_space_operations coda_file_aops; extern const struct address_space_operations coda_symlink_aops; |
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extern const struct file_operations coda_dir_operations; extern const struct file_operations coda_file_operations; extern const struct file_operations coda_ioctl_operations; |
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/* operations shared over more than one file */ int coda_open(struct inode *i, struct file *f); |
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int coda_release(struct inode *i, struct file *f); |
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int coda_permission(struct inode *inode, int mask); |
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int coda_revalidate_inode(struct dentry *); int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *); int coda_setattr(struct dentry *, struct iattr *); |
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/* this file: heloers */ |
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char *coda_f2s(struct CodaFid *f); int coda_isroot(struct inode *i); int coda_iscontrol(const char *name, size_t length); void coda_vattr_to_iattr(struct inode *, struct coda_vattr *); void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *); unsigned short coda_flags_to_cflags(unsigned short); /* sysctl.h */ void coda_sysctl_init(void); void coda_sysctl_clean(void); #define CODA_ALLOC(ptr, cast, size) do { \ if (size < PAGE_SIZE) \ |
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ptr = kmalloc((unsigned long) size, GFP_KERNEL); \ |
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else \ ptr = (cast)vmalloc((unsigned long) size); \ if (!ptr) \ printk("kernel malloc returns 0 at %s:%d ", __FILE__, __LINE__); \ else memset( ptr, 0, size ); \ } while (0) #define CODA_FREE(ptr,size) \ do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0) /* inode to cnode access functions */ static inline struct coda_inode_info *ITOC(struct inode *inode) { return list_entry(inode, struct coda_inode_info, vfs_inode); } static __inline__ struct CodaFid *coda_i2f(struct inode *inode) { return &(ITOC(inode)->c_fid); } static __inline__ char *coda_i2s(struct inode *inode) { return coda_f2s(&(ITOC(inode)->c_fid)); } /* this will not zap the inode away */ static __inline__ void coda_flag_inode(struct inode *inode, int flag) { ITOC(inode)->c_flags |= flag; } #endif |