69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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<dirent.h> -- definitions for SVR3 directory access routines
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last edit: 25-Apr-1987 D A Gwyn
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Prerequisite: <sys/types.h>
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*/
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#ifndef _PAX_DIRENT_H
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#define _PAX_DIRENT_H
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#include "config.h"
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#ifdef USG
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#define UFS
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#else
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#ifdef BSD
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#define BFS
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#endif
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#endif
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struct dirent { /* data from getdents()/readdir() */
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long d_ino; /* inode number of entry */
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off_t d_off; /* offset of disk directory entry */
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unsigned short d_reclen; /* length of this record */
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char d_name[1]; /* name of file (non-POSIX) */
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};
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typedef struct {
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int dd_fd; /* file descriptor */
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int dd_loc; /* offset in block */
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int dd_size; /* amount of valid data */
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char *dd_buf; /* -> directory block */
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} DIR; /* stream data from opendir() */
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/*
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* The following nonportable ugliness could have been avoided by defining
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* DIRENTSIZ and DIRENTBASESIZ to also have (struct dirent *) arguments.
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*/
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#define DIRENTBASESIZ (((struct dirent *)0)->d_name \
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- (char *)&((struct dirent *)0)->d_ino)
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#define DIRENTSIZ( namlen ) ((DIRENTBASESIZ + sizeof(long) + (namlen)) \
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/ sizeof(long) * sizeof(long))
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#define MAXNAMLEN 512 /* maximum filename length */
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#ifndef NAME_MAX
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#define NAME_MAX (MAXNAMLEN - 1) /* DAG -- added for POSIX */
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#endif
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#define DIRBUF 8192 /* buffer size for fs-indep. dirs */
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/* must in general be larger than the filesystem buffer size */
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#ifdef __STDC__ /* Xn */
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extern DIR *opendir(char *);
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extern struct dirent *readdir(DIR *);
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extern OFFSET telldir(DIR *);
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extern void seekdir(DIR *, OFFSET);
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extern int closedir(DIR *);
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#else /* Xn */
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extern DIR *opendir();
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extern struct dirent *readdir();
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extern OFFSET telldir();
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extern void seekdir();
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extern int closedir();
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#endif /* Xn */
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#endif /* _PAX_DIRENT_H */
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