0b8e20c89e
- The primary reason is that mkfs and installboot need to run natively during the cross compilation (host and target versions are compiled). There is a collision of include files though. E.g. a.out.h is very minix-specific. Therefore some files we moved and replaced by stubs that include the original file if compiling on or for Minix : include/a.out.h -> include/minix/a.out.h include/sys/dir.h -> include/minix/dir.h include/dirent.h -> include/minix/dirent.h include/sys/types.h -> include/minix/types.h - This does not break any native compilation on Minix. Other headers that were including the original files are changed according to include directly the new, minix specific location not to pick up the host system includes while cross-compiling. - role of this patch is to make rebasing of the build branch simpler until the new build system is merged
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/* dirent.h - Declarations for directory reading routines.
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* Author: Kees J. Bot
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* 24 Apr 1989
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*
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* Note: The V7 format directory entries used under Minix must be transformed
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* into a struct dirent with a d_name of at least 15 characters. Given that
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* we have to transform V7 entries anyhow it is little trouble to let the
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* routines understand the so-called "flex" directory format too.
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*/
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#ifndef _DIRENT_H
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#define _DIRENT_H
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#ifndef _TYPES_H
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#include <minix/types.h>
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#endif
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#include <minix/dir.h>
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/* _fl_direct is a flexible directory entry. Actually it's a union of 8
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* characters and the 3 fields defined below.
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*/
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/* Flexible directory entry: */
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struct _fl_direct { /* First slot in an entry */
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ino_t d_ino;
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unsigned char d_extent;
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char d_name[3]; /* two characters for the shortest name */
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};
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/* Name of length len needs _EXTENT(len) extra slots. */
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#define _EXTENT(len) (((len) + 5) >> 3)
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/* Version 7 directory entry: */
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struct _v7_direct {
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ino_t d_ino;
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char d_name[DIRSIZ];
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};
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/* The block size must be at least 1024 bytes, because otherwise
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* the superblock (at 1024 bytes) overlaps with other filesystem data.
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*/
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#define _MIN_BLOCK_SIZE 1024
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/* The below is allocated in some parts of the system as the largest
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* a filesystem block can be. For instance, the boot monitor allocates
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* 3 of these blocks and has to fit within 64kB, so this can't be
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* increased without taking that into account.
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*/
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#define _MAX_BLOCK_SIZE 4096
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/* This is the block size for the fixed versions of the filesystem (V1/V2) */
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#define _STATIC_BLOCK_SIZE 1024
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#define _STATIC_FLEX_PER_BLOCK (_STATIC_BLOCK_SIZE/sizeof(struct _fl_direct))
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#define _FLEX_PER_V7 (_EXTENT(DIRSIZ) + 1)
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#define _FLEX_PER_BLOCK (_STATIC_BLOCK_SIZE/sizeof(struct _fl_direct))
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/* Definitions for the directory(3) routines: */
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typedef struct {
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char _fd; /* Filedescriptor of open directory */
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unsigned _count; /* This many bytes in _buf */
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unsigned _pos; /* Position in _buf */
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char _buf[_MAX_BLOCK_SIZE]; /* The size does not really
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* matter as long as the
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* buffer is big enough
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* to contain at least one
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* entry.
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*/
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} DIR;
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#define _DIRENT_NAME_LEN 61
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struct dirent { /* Largest entry (8 slots) */
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ino_t d_ino; /* I-node number */
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off_t d_off; /* Offset in directory */
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unsigned short d_reclen; /* Length of this record */
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char d_name[1]; /* Null terminated name */
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};
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/* Function Prototypes. */
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_PROTOTYPE( int closedir, (DIR *_dirp) );
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_PROTOTYPE( DIR *opendir, (const char *_dirname) );
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_PROTOTYPE( struct dirent *readdir, (DIR *_dirp) );
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_PROTOTYPE( void rewinddir, (DIR *_dirp) );
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#ifdef _MINIX
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_PROTOTYPE( int seekdir, (DIR *_dirp, off_t _loc) );
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_PROTOTYPE( off_t telldir, (DIR *_dirp) );
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#define dirfd(dirp) ((dirp)->_fd)
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_PROTOTYPE( int getdents, (int _fildes, struct dirent *_buf,
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size_t _nbyte) );
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#endif
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#endif /* _DIRENT_H */
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