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[/] [test_project/] [trunk/] [linux_sd_driver/] [fs/] [hostfs/] [hostfs.h] - Blame information for rev 62

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1 62 marcus.erl
#ifndef __UM_FS_HOSTFS
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#define __UM_FS_HOSTFS
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#include "os.h"
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/*
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 * These are exactly the same definitions as in fs.h, but the names are
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 * changed so that this file can be included in both kernel and user files.
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 */
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#define HOSTFS_ATTR_MODE        1
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#define HOSTFS_ATTR_UID         2
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#define HOSTFS_ATTR_GID         4
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#define HOSTFS_ATTR_SIZE        8
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#define HOSTFS_ATTR_ATIME       16
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#define HOSTFS_ATTR_MTIME       32
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#define HOSTFS_ATTR_CTIME       64
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#define HOSTFS_ATTR_ATIME_SET   128
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#define HOSTFS_ATTR_MTIME_SET   256
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/* These two are unused by hostfs. */
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#define HOSTFS_ATTR_FORCE       512     /* Not a change, but a change it */
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#define HOSTFS_ATTR_ATTR_FLAG   1024
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/*
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 * If you are very careful, you'll notice that these two are missing:
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 *
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 * #define ATTR_KILL_SUID       2048
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 * #define ATTR_KILL_SGID       4096
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 *
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 * and this is because they were added in 2.5 development in this patch:
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 *
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 * http://linux.bkbits.net:8080/linux-2.5/
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 * cset@3caf4a12k4XgDzK7wyK-TGpSZ9u2Ww?nav=index.html
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 * |src/.|src/include|src/include/linux|related/include/linux/fs.h
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 *
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 * Actually, they are not needed by most ->setattr() methods - they are set by
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 * callers of notify_change() to notify that the setuid/setgid bits must be
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 * dropped.
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 * notify_change() will delete those flags, make sure attr->ia_valid & ATTR_MODE
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 * is on, and remove the appropriate bits from attr->ia_mode (attr is a
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 * "struct iattr *"). -BlaisorBlade
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 */
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struct hostfs_iattr {
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        unsigned int    ia_valid;
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        mode_t          ia_mode;
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        uid_t           ia_uid;
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        gid_t           ia_gid;
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        loff_t          ia_size;
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        struct timespec ia_atime;
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        struct timespec ia_mtime;
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        struct timespec ia_ctime;
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};
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extern int stat_file(const char *path, unsigned long long *inode_out,
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                     int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
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                     unsigned long long *size_out, struct timespec *atime_out,
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                     struct timespec *mtime_out, struct timespec *ctime_out,
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                     int *blksize_out, unsigned long long *blocks_out, int fd);
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extern int access_file(char *path, int r, int w, int x);
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extern int open_file(char *path, int r, int w, int append);
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extern int file_type(const char *path, int *maj, int *min);
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extern void *open_dir(char *path, int *err_out);
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extern char *read_dir(void *stream, unsigned long long *pos,
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                      unsigned long long *ino_out, int *len_out);
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extern void close_file(void *stream);
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extern void close_dir(void *stream);
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extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
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extern int write_file(int fd, unsigned long long *offset, const char *buf,
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                      int len);
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extern int lseek_file(int fd, long long offset, int whence);
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extern int fsync_file(int fd, int datasync);
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extern int file_create(char *name, int ur, int uw, int ux, int gr,
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                       int gw, int gx, int or, int ow, int ox);
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extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd);
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extern int make_symlink(const char *from, const char *to);
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extern int unlink_file(const char *file);
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extern int do_mkdir(const char *file, int mode);
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extern int do_rmdir(const char *file);
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extern int do_mknod(const char *file, int mode, unsigned int major,
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                    unsigned int minor);
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extern int link_file(const char *from, const char *to);
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extern int do_readlink(char *file, char *buf, int size);
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extern int rename_file(char *from, char *to);
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extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
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                     long long *bfree_out, long long *bavail_out,
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                     long long *files_out, long long *ffree_out,
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                     void *fsid_out, int fsid_size, long *namelen_out,
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                     long *spare_out);
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#endif

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