include/minix/sffs.h

   1 /* Part of libsffs - (c) 2012, D.C. van Moolenbroek */
   2
   3 #ifndef _MINIX_SFFS_H
   4 #define _MINIX_SFFS_H
   5
   6 #include <sys/types.h>
   7 #include <sys/time.h>
   8 #include <minix/u64.h>
   9
  10 typedef void *sffs_file_t;              /* handle to open file */
  11 typedef void *sffs_dir_t;               /* handle to directory search */
  12
  13 struct sffs_attr {
  14   u32_t a_mask;                         /* which fields to retrieve/set */
  15   mode_t a_mode;                        /* file type and permissions */
  16   u64_t a_size;                         /* file size */
  17   struct timespec a_crtime;             /* file creation time */
  18   struct timespec a_atime;              /* file access time */
  19   struct timespec a_mtime;              /* file modification time */
  20   struct timespec a_ctime;              /* file change time */
  21 };
  22
  23 #define SFFS_ATTR_SIZE          0x01    /* get/set file size */
  24 #define SFFS_ATTR_CRTIME        0x02    /* get/set file creation time */
  25 #define SFFS_ATTR_ATIME         0x04    /* get/set file access time */
  26 #define SFFS_ATTR_MTIME         0x08    /* get/set file modification time */
  27 #define SFFS_ATTR_CTIME         0x10    /* get/set file change time */
  28 #define SFFS_ATTR_MODE          0x20    /* get/set file mode */
  29
  30 struct sffs_table {
  31   int (*t_open)(char *path, int flags, int mode, sffs_file_t *handle);
  32   ssize_t (*t_read)(sffs_file_t handle, char *buf, size_t size, u64_t pos);
  33   ssize_t (*t_write)(sffs_file_t handle, char *buf, size_t size, u64_t pos);
  34   int (*t_close)(sffs_file_t handle);
  35
  36   size_t (*t_readbuf)(char **ptr);
  37   size_t (*t_writebuf)(char **ptr);
  38
  39   int (*t_opendir)(char *path, sffs_dir_t *handle);
  40   int (*t_readdir)(sffs_dir_t handle, unsigned int index, char *buf,
  41         size_t size, struct sffs_attr *attr);
  42   int (*t_closedir)(sffs_dir_t handle);
  43
  44   int (*t_getattr)(char *path, struct sffs_attr *attr);
  45   int (*t_setattr)(char *path, struct sffs_attr *attr);
  46
  47   int (*t_mkdir)(char *path, int mode);
  48   int (*t_unlink)(char *path);
  49   int (*t_rmdir)(char *path);
  50   int (*t_rename)(char *opath, char *npath);
  51
  52   int (*t_queryvol)(char *path, u64_t *free, u64_t *total);
  53 };
  54
  55 struct sffs_params {
  56   char p_prefix[PATH_MAX];      /* prefix for all paths used */
  57   uid_t p_uid;                  /* UID that owns all files */
  58   gid_t p_gid;                  /* GID that owns all files */
  59   unsigned int p_file_mask;     /* AND-mask to apply to file permissions */
  60   unsigned int p_dir_mask;      /* AND-mask to apply to directory perms */
  61   int p_case_insens;            /* case insensitivity flag */
  62 };
  63
  64 int sffs_init(char *name, const struct sffs_table *table,
  65   struct sffs_params *params);
  66 void sffs_signal(int signo);
  67 void sffs_loop(void);
  68
  69 #endif /* _MINIX_SFFS_H */