greenplumn file_perm 源码
greenplumn file_perm 代码
文件路径：/src/include/common/file_perm.h
/*-------------------------------------------------------------------------
*
* File and directory permission definitions
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/common/file_perm.h
*
*-------------------------------------------------------------------------
*/
#ifndef FILE_PERM_H
#define FILE_PERM_H
#include <sys/stat.h>
/*
* Mode mask for data directory permissions that only allows the owner to
* read/write directories and files.
*
* This is the default.
*/
#define PG_MODE_MASK_OWNER (S_IRWXG | S_IRWXO)
/*
* Mode mask for data directory permissions that also allows group read/execute.
*/
#define PG_MODE_MASK_GROUP (S_IWGRP | S_IRWXO)
/* Default mode for creating directories */
#define PG_DIR_MODE_OWNER S_IRWXU
/* Mode for creating directories that allows group read/execute */
#define PG_DIR_MODE_GROUP (S_IRWXU | S_IRGRP | S_IXGRP)
/* Default mode for creating files */
#define PG_FILE_MODE_OWNER (S_IRUSR | S_IWUSR)
/* Mode for creating files that allows group read */
#define PG_FILE_MODE_GROUP (S_IRUSR | S_IWUSR | S_IRGRP)
/* Modes for creating directories and files in the data directory */
extern int pg_dir_create_mode;
extern int pg_file_create_mode;
/* Mode mask to pass to umask() */
extern int pg_mode_mask;
/* Set permissions and mask based on the provided mode */
extern void SetDataDirectoryCreatePerm(int dataDirMode);
/* Set permissions and mask based on the mode of the data directory */
extern bool GetDataDirectoryCreatePerm(const char *dataDir);
#endif /* FILE_PERM_H */
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