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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* libpq-fs.h
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* definitions for using Inversion file system routines
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*
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: libpq-fs.h,v 1.9 2000/01/26 05:58:12 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef LIBPQ_FS_H
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#define LIBPQ_FS_H
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/* UNIX compatibility junk. This should be in all systems' include files,
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but this is not always the case. */
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#ifndef MAXNAMLEN
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#define MAXNAMLEN 255
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#endif /* MAXNAMLEN */
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struct pgdirent
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{
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unsigned long d_ino;
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unsigned short d_namlen;
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char d_name[MAXNAMLEN + 1];
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};
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/*
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* SysV struct dirent doesn't have d_namlen.
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* This counts on d_name being last, which is moderately safe (ha) since
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* it's the variable-length part of the structure.
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*/
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#ifdef SYSV_DIRENT
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#define D_NAMLEN(dp) \
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((dp)->d_reclen - offsetof(struct dirent, d_name[0]))
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#else /* SYSV_DIRENT */
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#define D_NAMLEN(dp) \
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((dp)->d_namlen)
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#endif /* SYSV_DIRENT */
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/* for stat(2) */
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#ifndef S_IRUSR
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/* file modes */
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#define S_IRWXU 00700 /* read, write, execute: owner */
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#define S_IRUSR 00400 /* read permission: owner */
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#define S_IWUSR 00200 /* write permission: owner */
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#define S_IXUSR 00100 /* execute permission: owner */
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#define S_IRWXG 00070 /* read, write, execute: group */
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#define S_IRGRP 00040 /* read permission: group */
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#define S_IWGRP 00020 /* write permission: group */
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#define S_IXGRP 00010 /* execute permission: group */
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#define S_IRWXO 00007 /* read, write, execute: other */
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#define S_IROTH 00004 /* read permission: other */
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#define S_IWOTH 00002 /* write permission: other */
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#define S_IXOTH 00001 /* execute permission: other */
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#define _S_IFMT 0170000 /* type of file; sync with S_IFMT */
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#define _S_IFBLK 0060000 /* block special; sync with S_IFBLK */
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#define _S_IFCHR 0020000 /* character special sync with S_IFCHR */
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#define _S_IFDIR 0040000 /* directory; sync with S_IFDIR */
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#define _S_IFIFO 0010000 /* FIFO - named pipe; sync with S_IFIFO */
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#define _S_IFREG 0100000 /* regular; sync with S_IFREG */
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#define S_IFDIR _S_IFDIR
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#define S_IFREG _S_IFREG
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#define S_ISDIR( mode ) (((mode) & _S_IFMT) == _S_IFDIR)
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#endif /* S_IRUSR */
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/*
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* Inversion doesn't have links.
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*/
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#ifndef S_ISLNK
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#define S_ISLNK(x) 0
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#endif
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/*
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* Flags for inversion file system large objects. Normally, creat()
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* takes mode arguments, but we don't use them in inversion, since
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* you get postgres protections. Instead, we use the low sixteen bits
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* of the integer mode argument to store the number of the storage
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* manager to be used, and the high sixteen bits for flags.
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*/
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#define INV_WRITE 0x00020000
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#define INV_READ 0x00040000
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/* Error values for p_errno */
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#define PEPERM 1 /* Not owner */
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#define PENOENT 2 /* No such file or directory */
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#define PEACCES 13 /* Permission denied */
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#define PEEXIST 17 /* File exists */
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#define PENOTDIR 20 /* Not a directory */
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#define PEISDIR 21 /* Is a directory */
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#define PEINVAL 22 /* Invalid argument */
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#define PENAMETOOLONG 63 /* File name too long */
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#define PENOTEMPTY 66 /* Directory not empty */
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#define PEPGIO 99 /* postgres backend had problems */
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#endif /* LIBPQ_FS_H */
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