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Diffstat (limited to 'src/backend/libpq/libpq-fs.h')
| -rw-r--r-- | src/backend/libpq/libpq-fs.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/backend/libpq/libpq-fs.h b/src/backend/libpq/libpq-fs.h new file mode 100644 index 00000000000..76f1f84c30b --- /dev/null +++ b/src/backend/libpq/libpq-fs.h @@ -0,0 +1,119 @@ +/*------------------------------------------------------------------------- + * + * libpq-fs.h-- + * definitions for using Inversion file system routines + * + * + * Copyright (c) 1994, Regents of the University of California + * + * $Id: libpq-fs.h,v 1.1.1.1 1996/07/09 06:21:30 scrappy Exp $ + * + *------------------------------------------------------------------------- + */ +#ifndef LIBPQ_FS_H +#define LIBPQ_FS_H + +#include "lib/dllist.h" +#include <sys/file.h> +#include <sys/stat.h> + +#include <fcntl.h> /* for O_ on some */ +#ifndef WIN32 +#include <unistd.h> /* for SEEK_ on most */ +#endif /* WIN32 */ +#ifndef SEEK_SET +#include <stdio.h> /* for SEEK_ on others */ +#endif /* SEEK_SET */ + +/* UNIX compatibility junk. This should be in all systems' include files, + but this is not always the case. */ + +#ifndef MAXNAMLEN +#define MAXNAMLEN 255 +#endif /* MAXNAMLEN */ + +struct pgdirent { + unsigned long d_ino; + unsigned short d_namlen; + char d_name[MAXNAMLEN+1]; +}; + +/* + * SysV struct dirent doesn't have d_namlen. + * This counts on d_name being last, which is moderately safe (ha) since + * it's the variable-length part of the structure. + */ +#ifdef SYSV_DIRENT +#define D_NAMLEN(dp) \ + ((dp)->d_reclen - offsetof(struct dirent, d_name[0])) +#else /* SYSV_DIRENT */ +#define D_NAMLEN(dp) \ + ((dp)->d_namlen) +#endif /* SYSV_DIRENT */ + +/* for stat(2) */ +#ifndef S_IRUSR +/* file modes */ + +#define S_IRWXU 00700 /* read, write, execute: owner */ +#define S_IRUSR 00400 /* read permission: owner */ +#define S_IWUSR 00200 /* write permission: owner */ +#define S_IXUSR 00100 /* execute permission: owner */ + +#define S_IRWXG 00070 /* read, write, execute: group */ +#define S_IRGRP 00040 /* read permission: group */ +#define S_IWGRP 00020 /* write permission: group */ +#define S_IXGRP 00010 /* execute permission: group */ + +#define S_IRWXO 00007 /* read, write, execute: other */ +#define S_IROTH 00004 /* read permission: other */ +#define S_IWOTH 00002 /* write permission: other */ +#define S_IXOTH 00001 /* execute permission: other */ + +#define _S_IFMT 0170000 /* type of file; sync with S_IFMT */ +#define _S_IFBLK 0060000 /* block special; sync with S_IFBLK */ +#define _S_IFCHR 0020000 /* character special sync with S_IFCHR */ +#define _S_IFDIR 0040000 /* directory; sync with S_IFDIR */ +#define _S_IFIFO 0010000 /* FIFO - named pipe; sync with S_IFIFO */ +#define _S_IFREG 0100000 /* regular; sync with S_IFREG */ + +#define S_IFDIR _S_IFDIR +#define S_IFREG _S_IFREG + +#define S_ISDIR( mode ) (((mode) & _S_IFMT) == _S_IFDIR) + +#endif /* S_IRUSR */ + +/* + * Inversion doesn't have links. + */ +#ifndef S_ISLNK +#define S_ISLNK(x) 0 +#endif + +/* + * Flags for inversion file system large objects. Normally, creat() + * takes mode arguments, but we don't use them in inversion, since + * you get postgres protections. Instead, we use the low sixteen bits + * of the integer mode argument to store the number of the storage + * manager to be used, and the high sixteen bits for flags. + */ + +#define INV_SMGRMASK 0x0000ffff +#define INV_ARCHIVE 0x00010000 +#define INV_WRITE 0x00020000 +#define INV_READ 0x00040000 + +/* Error values for p_errno */ +#define PEPERM 1 /* Not owner */ +#define PENOENT 2 /* No such file or directory */ +#define PEACCES 13 /* Permission denied */ +#define PEEXIST 17 /* File exists */ +#define PENOTDIR 20 /* Not a directory*/ +#define PEISDIR 21 /* Is a directory */ +#define PEINVAL 22 /* Invalid argument */ +#define PENAMETOOLONG 63 /* File name too long */ +#define PENOTEMPTY 66 /* Directory not empty */ +#define PEPGIO 99 /* postgres backend had problems */ + +#endif /* LIBPQ_FS_H */ |