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-rw-r--r--src/stat.h101
1 files changed, 59 insertions, 42 deletions
diff --git a/src/stat.h b/src/stat.h
index 44cbfad..8d7144d 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -1,18 +1,5 @@
-/****************************************************************************
- * bfs *
- * Copyright (C) 2018-2019 Tavian Barnes <tavianator@tavianator.com> *
- * *
- * Permission to use, copy, modify, and/or distribute this software for any *
- * purpose with or without fee is hereby granted. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES *
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF *
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR *
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES *
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN *
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF *
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. *
- ****************************************************************************/
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
/**
* A facade over the stat() API that unifies some details that diverge between
@@ -25,33 +12,49 @@
#ifndef BFS_STAT_H
#define BFS_STAT_H
-#include "config.h"
+#include "prelude.h"
+#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
+#if !BFS_HAS_STATX && BFS_HAS_STATX_SYSCALL
+# include <linux/stat.h>
+#endif
+
+#ifndef BFS_USE_STATX
+# define BFS_USE_STATX (BFS_HAS_STATX || BFS_HAS_STATX_SYSCALL)
+#endif
+
#if BFS_USE_SYS_PARAM_H
-# include <sys/param.h>
+# include <sys/param.h>
+#endif
+
+#ifdef DEV_BSIZE
+# define BFS_STAT_BLKSIZE DEV_BSIZE
+#elif defined(S_BLKSIZE)
+# define BFS_STAT_BLKSIZE S_BLKSIZE
+#else
+# define BFS_STAT_BLKSIZE 512
#endif
/**
* bfs_stat field bitmask.
*/
enum bfs_stat_field {
- BFS_STAT_DEV = 1 << 0,
- BFS_STAT_INO = 1 << 1,
- BFS_STAT_TYPE = 1 << 2,
- BFS_STAT_MODE = 1 << 3,
- BFS_STAT_NLINK = 1 << 4,
- BFS_STAT_GID = 1 << 5,
- BFS_STAT_UID = 1 << 6,
- BFS_STAT_SIZE = 1 << 7,
- BFS_STAT_BLOCKS = 1 << 8,
- BFS_STAT_RDEV = 1 << 9,
- BFS_STAT_ATTRS = 1 << 10,
- BFS_STAT_ATIME = 1 << 11,
- BFS_STAT_BTIME = 1 << 12,
- BFS_STAT_CTIME = 1 << 13,
- BFS_STAT_MTIME = 1 << 14,
+ BFS_STAT_MODE = 1 << 0,
+ BFS_STAT_DEV = 1 << 1,
+ BFS_STAT_INO = 1 << 2,
+ BFS_STAT_NLINK = 1 << 3,
+ BFS_STAT_GID = 1 << 4,
+ BFS_STAT_UID = 1 << 5,
+ BFS_STAT_SIZE = 1 << 6,
+ BFS_STAT_BLOCKS = 1 << 7,
+ BFS_STAT_RDEV = 1 << 8,
+ BFS_STAT_ATTRS = 1 << 9,
+ BFS_STAT_ATIME = 1 << 10,
+ BFS_STAT_BTIME = 1 << 11,
+ BFS_STAT_CTIME = 1 << 12,
+ BFS_STAT_MTIME = 1 << 13,
};
/**
@@ -73,14 +76,6 @@ enum bfs_stat_flags {
BFS_STAT_NOSYNC = 1 << 2,
};
-#ifdef DEV_BSIZE
-# define BFS_STAT_BLKSIZE DEV_BSIZE
-#elif defined(S_BLKSIZE)
-# define BFS_STAT_BLKSIZE S_BLKSIZE
-#else
-# define BFS_STAT_BLKSIZE 512
-#endif
-
/**
* Facade over struct stat.
*/
@@ -88,12 +83,12 @@ struct bfs_stat {
/** Bitmask indicating filled fields. */
enum bfs_stat_field mask;
+ /** File type and access mode. */
+ mode_t mode;
/** Device ID containing the file. */
dev_t dev;
/** Inode number. */
ino_t ino;
- /** File type and access mode. */
- mode_t mode;
/** Number of hard links. */
nlink_t nlink;
/** Owner group ID. */
@@ -138,6 +133,28 @@ struct bfs_stat {
int bfs_stat(int at_fd, const char *at_path, enum bfs_stat_flags flags, struct bfs_stat *buf);
/**
+ * Convert bfs_stat_flags to fstatat() flags.
+ */
+int bfs_fstatat_flags(enum bfs_stat_flags flags);
+
+/**
+ * Convert struct stat to struct bfs_stat.
+ */
+void bfs_stat_convert(struct bfs_stat *dest, const struct stat *src);
+
+#if BFS_USE_STATX
+/**
+ * Convert bfs_stat_flags to statx() flags.
+ */
+int bfs_statx_flags(enum bfs_stat_flags flags);
+
+/**
+ * Convert struct statx to struct bfs_stat.
+ */
+int bfs_statx_convert(struct bfs_stat *dest, const struct statx *src);
+#endif
+
+/**
* Get a particular time field from a bfs_stat() buffer.
*/
const struct timespec *bfs_stat_time(const struct bfs_stat *buf, enum bfs_stat_field field);