From 9463fdd30d392c98de7b5712d30dfbaeada40e99 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Wed, 25 Jan 2023 16:14:11 -0500
Subject: Replace license boilerplate with SPDX tags

And while I'm at it, remove years from copyright declarations.

Link: https://spdx.dev/about/
Link: https://daniel.haxx.se/blog/2023/01/08/copyright-without-years/
---
 src/stat.h | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

(limited to 'src/stat.h')

diff --git a/src/stat.h b/src/stat.h
index 44cbfad..7a70146 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
-- 
cgit v1.2.3


From 7e5357a1cf40ebaa7ffaeebfd3a88c3ba93eb1a7 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Wed, 3 May 2023 09:29:19 -0400
Subject: style: Don't use tabs to indent preprocessor directives

---
 src/bfstd.c  |  6 ++---
 src/bfstd.h  | 32 +++++++++++------------
 src/config.h | 84 ++++++++++++++++++++++++++++++------------------------------
 src/dir.c    | 20 +++++++--------
 src/eval.c   | 22 ++++++++--------
 src/fsade.c  |  8 +++---
 src/fsade.h  |  8 +++---
 src/mtab.c   | 20 +++++++--------
 src/printf.c |  8 +++---
 src/stat.c   | 10 ++++----
 src/stat.h   |  8 +++---
 src/trie.c   | 30 +++++++++++-----------
 src/xregex.c | 28 ++++++++++----------
 src/xspawn.c |  2 +-
 14 files changed, 143 insertions(+), 143 deletions(-)

(limited to 'src/stat.h')

diff --git a/src/bfstd.c b/src/bfstd.c
index bc31288..1dc322b 100644
--- a/src/bfstd.c
+++ b/src/bfstd.c
@@ -19,13 +19,13 @@
 #include <wchar.h>
 
 #if BFS_USE_SYS_SYSMACROS_H
-#	include <sys/sysmacros.h>
+#  include <sys/sysmacros.h>
 #elif BFS_USE_SYS_MKDEV_H
-#	include <sys/mkdev.h>
+#  include <sys/mkdev.h>
 #endif
 
 #if BFS_USE_UTIL_H
-#	include <util.h>
+#  include <util.h>
 #endif
 
 bool is_nonexistence_error(int error) {
diff --git a/src/bfstd.h b/src/bfstd.h
index f85b74f..028e4e6 100644
--- a/src/bfstd.h
+++ b/src/bfstd.h
@@ -21,29 +21,29 @@ bool is_nonexistence_error(int error);
 #include <fcntl.h>
 
 #ifndef O_EXEC
-#	ifdef O_PATH
-#		define O_EXEC O_PATH
-#	else
-#		define O_EXEC O_RDONLY
-#	endif
+#  ifdef O_PATH
+#    define O_EXEC O_PATH
+#  else
+#    define O_EXEC O_RDONLY
+#  endif
 #endif
 
 #ifndef O_SEARCH
-#	ifdef O_PATH
-#		define O_SEARCH O_PATH
-#	else
-#		define O_SEARCH O_RDONLY
-#	endif
+#  ifdef O_PATH
+#    define O_SEARCH O_PATH
+#  else
+#    define O_SEARCH O_RDONLY
+#  endif
 #endif
 
 #ifndef O_DIRECTORY
-#	define O_DIRECTORY 0
+#  define O_DIRECTORY 0
 #endif
 
 #include <fnmatch.h>
 
 #if !defined(FNM_CASEFOLD) && defined(FNM_IGNORECASE)
-#	define FNM_CASEFOLD FNM_IGNORECASE
+#  define FNM_CASEFOLD FNM_IGNORECASE
 #endif
 
 // #include <libgen.h>
@@ -144,10 +144,10 @@ int xminor(dev_t dev);
 // #include <sys/stat.h>
 
 #if __APPLE__
-#	define st_atim st_atimespec
-#	define st_ctim st_ctimespec
-#	define st_mtim st_mtimespec
-#	define st_birthtim st_birthtimespec
+#  define st_atim st_atimespec
+#  define st_ctim st_ctimespec
+#  define st_mtim st_mtimespec
+#  define st_birthtim st_birthtimespec
 #endif
 
 // #include <unistd.h>
diff --git a/src/config.h b/src/config.h
index 34ae11d..5f54250 100644
--- a/src/config.h
+++ b/src/config.h
@@ -14,13 +14,13 @@
 // bfs packaging configuration
 
 #ifndef BFS_COMMAND
-#	define BFS_COMMAND "bfs"
+#  define BFS_COMMAND "bfs"
 #endif
 #ifndef BFS_VERSION
-#	define BFS_VERSION "2.6.3"
+#  define BFS_VERSION "2.6.3"
 #endif
 #ifndef BFS_HOMEPAGE
-#	define BFS_HOMEPAGE "https://tavianator.com/projects/bfs.html"
+#  define BFS_HOMEPAGE "https://tavianator.com/projects/bfs.html"
 #endif
 
 // Check for system headers
@@ -28,34 +28,34 @@
 #ifdef __has_include
 
 #if __has_include(<mntent.h>)
-#	define BFS_HAS_MNTENT_H true
+#  define BFS_HAS_MNTENT_H true
 #endif
 #if __has_include(<paths.h>)
-#	define BFS_HAS_PATHS_H true
+#  define BFS_HAS_PATHS_H true
 #endif
 #if __has_include(<sys/acl.h>)
-#	define BFS_HAS_SYS_ACL_H true
+#  define BFS_HAS_SYS_ACL_H true
 #endif
 #if __has_include(<sys/capability.h>)
-#	define BFS_HAS_SYS_CAPABILITY_H true
+#  define BFS_HAS_SYS_CAPABILITY_H true
 #endif
 #if __has_include(<sys/extattr.h>)
-#	define BFS_HAS_SYS_EXTATTR_H true
+#  define BFS_HAS_SYS_EXTATTR_H true
 #endif
 #if __has_include(<sys/mkdev.h>)
-#	define BFS_HAS_SYS_MKDEV_H true
+#  define BFS_HAS_SYS_MKDEV_H true
 #endif
 #if __has_include(<sys/param.h>)
-#	define BFS_HAS_SYS_PARAM_H true
+#  define BFS_HAS_SYS_PARAM_H true
 #endif
 #if __has_include(<sys/sysmacros.h>)
-#	define BFS_HAS_SYS_SYSMACROS_H true
+#  define BFS_HAS_SYS_SYSMACROS_H true
 #endif
 #if __has_include(<sys/xattr.h>)
-#	define BFS_HAS_SYS_XATTR_H true
+#  define BFS_HAS_SYS_XATTR_H true
 #endif
 #if __has_include(<util.h>)
-#	define BFS_HAS_UTIL_H true
+#  define BFS_HAS_UTIL_H true
 #endif
 
 #else // !__has_include
@@ -74,59 +74,59 @@
 #endif // !__has_include
 
 #ifndef BFS_USE_MNTENT_H
-#	define BFS_USE_MNTENT_H BFS_HAS_MNTENT_H
+#  define BFS_USE_MNTENT_H BFS_HAS_MNTENT_H
 #endif
 #ifndef BFS_USE_PATHS_H
-#	define BFS_USE_PATHS_H BFS_HAS_PATHS_H
+#  define BFS_USE_PATHS_H BFS_HAS_PATHS_H
 #endif
 #ifndef BFS_USE_SYS_ACL_H
-#	define BFS_USE_SYS_ACL_H BFS_HAS_SYS_ACL_H
+#  define BFS_USE_SYS_ACL_H BFS_HAS_SYS_ACL_H
 #endif
 #ifndef BFS_USE_SYS_CAPABILITY_H
-#	define BFS_USE_SYS_CAPABILITY_H BFS_HAS_SYS_CAPABILITY_H
+#  define BFS_USE_SYS_CAPABILITY_H BFS_HAS_SYS_CAPABILITY_H
 #endif
 #ifndef BFS_USE_SYS_EXTATTR_H
-#	define BFS_USE_SYS_EXTATTR_H BFS_HAS_SYS_EXTATTR_H
+#  define BFS_USE_SYS_EXTATTR_H BFS_HAS_SYS_EXTATTR_H
 #endif
 #ifndef BFS_USE_SYS_MKDEV_H
-#	define BFS_USE_SYS_MKDEV_H BFS_HAS_SYS_MKDEV_H
+#  define BFS_USE_SYS_MKDEV_H BFS_HAS_SYS_MKDEV_H
 #endif
 #ifndef BFS_USE_SYS_PARAM_H
-#	define BFS_USE_SYS_PARAM_H BFS_HAS_SYS_PARAM_H
+#  define BFS_USE_SYS_PARAM_H BFS_HAS_SYS_PARAM_H
 #endif
 #ifndef BFS_USE_SYS_SYSMACROS_H
-#	define BFS_USE_SYS_SYSMACROS_H BFS_HAS_SYS_SYSMACROS_H
+#  define BFS_USE_SYS_SYSMACROS_H BFS_HAS_SYS_SYSMACROS_H
 #endif
 #ifndef BFS_USE_SYS_XATTR_H
-#	define BFS_USE_SYS_XATTR_H BFS_HAS_SYS_XATTR_H
+#  define BFS_USE_SYS_XATTR_H BFS_HAS_SYS_XATTR_H
 #endif
 #ifndef BFS_USE_UTIL_H
-#	define BFS_USE_UTIL_H BFS_HAS_UTIL_H
+#  define BFS_USE_UTIL_H BFS_HAS_UTIL_H
 #endif
 
 // Stub out feature detection on old/incompatible compilers
 
 #ifndef __has_feature
-#	define __has_feature(feat) false
+#  define __has_feature(feat) false
 #endif
 
 #ifndef __has_c_attribute
-#	define __has_c_attribute(attr) false
+#  define __has_c_attribute(attr) false
 #endif
 
 #ifndef __has_attribute
-#	define __has_attribute(attr) false
+#  define __has_attribute(attr) false
 #endif
 
 // Platform detection
 
 // Get the definition of BSD if available
 #if BFS_USE_SYS_PARAM_H
-#	include <sys/param.h>
+#  include <sys/param.h>
 #endif
 
 #ifndef __GLIBC_PREREQ
-#	define __GLIBC_PREREQ(maj, min) false
+#  define __GLIBC_PREREQ(maj, min) false
 #endif
 
 // Wrappers for fundamental language features/extensions
@@ -135,11 +135,11 @@
  * Silence compiler warnings about switch/case fall-throughs.
  */
 #if __has_c_attribute(fallthrough)
-#	define BFS_FALLTHROUGH [[fallthrough]]
+#  define BFS_FALLTHROUGH [[fallthrough]]
 #elif __has_attribute(fallthrough)
-#	define BFS_FALLTHROUGH __attribute__((fallthrough))
+#  define BFS_FALLTHROUGH __attribute__((fallthrough))
 #else
-#	define BFS_FALLTHROUGH ((void)0)
+#  define BFS_FALLTHROUGH ((void)0)
 #endif
 
 /**
@@ -173,40 +173,40 @@
  * Adds compiler warnings for bad printf()-style function calls, if supported.
  */
 #if __has_attribute(format)
-#	define BFS_FORMATTER(fmt, args) __attribute__((format(printf, fmt, args)))
+#  define BFS_FORMATTER(fmt, args) __attribute__((format(printf, fmt, args)))
 #else
-#	define BFS_FORMATTER(fmt, args)
+#  define BFS_FORMATTER(fmt, args)
 #endif
 
 /**
  * Check if function multiversioning via GNU indirect functions (ifunc) is supported.
  */
 #if !defined(BFS_TARGET_CLONES) && __has_attribute(target_clones) && (__GLIBC__ || __FreeBSD__ || __NetBSD__)
-#	define BFS_TARGET_CLONES true
+#  define BFS_TARGET_CLONES true
 #endif
 
 /**
  * Ignore a particular GCC warning for a region of code.
  */
 #if __GNUC__
-#	define BFS_PRAGMA_STRINGIFY(...) _Pragma(#__VA_ARGS__)
-#	define BFS_SUPPRESS(warning)				\
-	_Pragma("GCC diagnostic push");				\
+#  define BFS_PRAGMA_STRINGIFY(...) _Pragma(#__VA_ARGS__)
+#  define BFS_SUPPRESS(warning) \
+	_Pragma("GCC diagnostic push"); \
 	BFS_PRAGMA_STRINGIFY(GCC diagnostic ignored warning)
-#	define BFS_UNSUPPRESS()			\
+#  define BFS_UNSUPPRESS() \
 	_Pragma("GCC diagnostic pop")
 #else
-#	define BFS_SUPPRESS(warning)
-#	define BFS_UNSUPPRESS()
+#  define BFS_SUPPRESS(warning)
+#  define BFS_UNSUPPRESS()
 #endif
 
 /**
  * Initialize a variable, unless sanitizers would detect uninitialized uses.
  */
 #if __has_feature(memory_sanitizer)
-#	define BFS_UNINIT(var, value) var = var
+#  define BFS_UNINIT(var, value) var = var
 #else
-#	define BFS_UNINIT(var, value) var = value
+#  define BFS_UNINIT(var, value) var = value
 #endif
 
 #endif // BFS_CONFIG_H
diff --git a/src/dir.c b/src/dir.c
index 2719c15..eb6e3e0 100644
--- a/src/dir.c
+++ b/src/dir.c
@@ -16,16 +16,16 @@
 #include <unistd.h>
 
 #ifndef BFS_GETDENTS
-#	define BFS_GETDENTS (__linux__ || __FreeBSD__)
+#  define BFS_GETDENTS (__linux__ || __FreeBSD__)
 #endif
 
 #if BFS_GETDENTS
-#	if __has_feature(memory_sanitizer)
-#		include <sanitizer/msan_interface.h>
-#	endif
-#	if __linux__
-#		include <sys/syscall.h>
-#	endif
+#  if __has_feature(memory_sanitizer)
+#    include <sanitizer/msan_interface.h>
+#  endif
+#  if __linux__
+#    include <sys/syscall.h>
+#  endif
 
 /** getdents() syscall wrapper. */
 static ssize_t bfs_getdents(int fd, void *buf, size_t size) {
@@ -119,10 +119,10 @@ struct bfs_dir {
 };
 
 #if BFS_GETDENTS
-#	define DIR_SIZE (64 << 10)
-#	define BUF_SIZE (DIR_SIZE - sizeof(struct bfs_dir))
+#  define DIR_SIZE (64 << 10)
+#  define BUF_SIZE (DIR_SIZE - sizeof(struct bfs_dir))
 #else
-#	define DIR_SIZE sizeof(struct bfs_dir)
+#  define DIR_SIZE sizeof(struct bfs_dir)
 #endif
 
 struct bfs_dir *bfs_opendir(int at_fd, const char *at_path) {
diff --git a/src/eval.c b/src/eval.c
index 53ce605..687ba32 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -943,9 +943,9 @@ bool eval_xtype(const struct bfs_expr *expr, struct bfs_eval *state) {
 }
 
 #if _POSIX_MONOTONIC_CLOCK > 0
-#	define BFS_CLOCK CLOCK_MONOTONIC
+#  define BFS_CLOCK CLOCK_MONOTONIC
 #elif _POSIX_TIMERS > 0
-#	define BFS_CLOCK CLOCK_REALTIME
+#  define BFS_CLOCK CLOCK_REALTIME
 #endif
 
 /**
@@ -1194,15 +1194,15 @@ static bool eval_file_unique(struct bfs_eval *state, struct trie *seen) {
 	}
 }
 
-#define DEBUG_FLAG(flags, flag)				\
-	do {						\
-		if ((flags & flag) || flags == flag) {	\
-			fputs(#flag, stderr);		\
-			flags ^= flag;			\
-			if (flags) {			\
-				fputs(" | ", stderr);	\
-			}				\
-		}					\
+#define DEBUG_FLAG(flags, flag) \
+	do { \
+		if ((flags & flag) || flags == flag) { \
+			fputs(#flag, stderr); \
+			flags ^= flag; \
+			if (flags) { \
+				fputs(" | ", stderr); \
+			} \
+		} \
 	} while (0)
 
 /**
diff --git a/src/fsade.c b/src/fsade.c
index a61a6b8..aefbb75 100644
--- a/src/fsade.c
+++ b/src/fsade.c
@@ -13,17 +13,17 @@
 #include <unistd.h>
 
 #if BFS_CAN_CHECK_ACL
-#	include <sys/acl.h>
+#  include <sys/acl.h>
 #endif
 
 #if BFS_CAN_CHECK_CAPABILITIES
-#	include <sys/capability.h>
+#  include <sys/capability.h>
 #endif
 
 #if BFS_USE_SYS_EXTATTR_H
-#	include <sys/extattr.h>
+#  include <sys/extattr.h>
 #elif BFS_USE_SYS_XATTR_H
-#	include <sys/xattr.h>
+#  include <sys/xattr.h>
 #endif
 
 #if BFS_CAN_CHECK_ACL || BFS_CAN_CHECK_CAPABILITIES || BFS_CAN_CHECK_XATTRS
diff --git a/src/fsade.h b/src/fsade.h
index 9bef892..557da26 100644
--- a/src/fsade.h
+++ b/src/fsade.h
@@ -15,10 +15,10 @@
 #define BFS_CAN_CHECK_ACL BFS_USE_SYS_ACL_H
 
 #if !defined(BFS_CAN_CHECK_CAPABILITIES) && BFS_USE_SYS_CAPABILITY_H && !__FreeBSD__
-#	include <sys/capability.h>
-#	ifdef CAP_CHOWN
-#		define BFS_CAN_CHECK_CAPABILITIES true
-#	endif
+#  include <sys/capability.h>
+#  ifdef CAP_CHOWN
+#    define BFS_CAN_CHECK_CAPABILITIES true
+#  endif
 #endif
 
 #define BFS_CAN_CHECK_XATTRS (BFS_USE_SYS_EXTATTR_H || BFS_USE_SYS_XATTR_H)
diff --git a/src/mtab.c b/src/mtab.c
index 0e377a1..27f1743 100644
--- a/src/mtab.c
+++ b/src/mtab.c
@@ -15,23 +15,23 @@
 #include <sys/types.h>
 
 #if BFS_USE_MNTENT_H
-#	define BFS_MNTENT 1
+#  define BFS_MNTENT 1
 #elif BSD
-#	define BFS_MNTINFO 1
+#  define BFS_MNTINFO 1
 #elif __SVR4
-#	define BFS_MNTTAB 1
+#  define BFS_MNTTAB 1
 #endif
 
 #if BFS_MNTENT
-#	include <mntent.h>
-#	include <paths.h>
-#	include <stdio.h>
+#  include <mntent.h>
+#  include <paths.h>
+#  include <stdio.h>
 #elif BFS_MNTINFO
-#	include <sys/mount.h>
-#	include <sys/ucred.h>
+#  include <sys/mount.h>
+#  include <sys/ucred.h>
 #elif BFS_MNTTAB
-#	include <stdio.h>
-#	include <sys/mnttab.h>
+#  include <stdio.h>
+#  include <sys/mnttab.h>
 #endif
 
 /**
diff --git a/src/printf.c b/src/printf.c
index 1b4f2d4..726d54d 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -72,10 +72,10 @@ static bool should_color(CFILE *cfile, const struct bfs_printf *directive) {
 /**
  * Print a value to a temporary buffer before formatting it.
  */
-#define BFS_PRINTF_BUF(buf, format, ...)				\
-	char buf[256];							\
-	int ret = snprintf(buf, sizeof(buf), format, __VA_ARGS__);	\
-	assert(ret >= 0 && (size_t)ret < sizeof(buf));			\
+#define BFS_PRINTF_BUF(buf, format, ...) \
+	char buf[256]; \
+	int ret = snprintf(buf, sizeof(buf), format, __VA_ARGS__); \
+	assert(ret >= 0 && (size_t)ret < sizeof(buf)); \
 	(void)ret
 
 /**
diff --git a/src/stat.c b/src/stat.c
index aaa5eac..f3d9046 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -13,15 +13,15 @@
 #include <sys/stat.h>
 
 #if defined(STATX_BASIC_STATS) && (!__ANDROID__ || __ANDROID_API__ >= 30)
-#	define BFS_LIBC_STATX true
+#  define BFS_LIBC_STATX true
 #elif __linux__
-#	include <linux/stat.h>
-#	include <sys/syscall.h>
-#	include <unistd.h>
+#  include <linux/stat.h>
+#  include <sys/syscall.h>
+#  include <unistd.h>
 #endif
 
 #if BFS_LIBC_STATX || defined(__NR_statx)
-#	define BFS_STATX true
+#  define BFS_STATX true
 #endif
 
 const char *bfs_stat_field_name(enum bfs_stat_field field) {
diff --git a/src/stat.h b/src/stat.h
index 7a70146..e08dd4d 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -17,7 +17,7 @@
 #include <time.h>
 
 #if BFS_USE_SYS_PARAM_H
-#	include <sys/param.h>
+#  include <sys/param.h>
 #endif
 
 /**
@@ -61,11 +61,11 @@ enum bfs_stat_flags {
 };
 
 #ifdef DEV_BSIZE
-#	define BFS_STAT_BLKSIZE DEV_BSIZE
+#  define BFS_STAT_BLKSIZE DEV_BSIZE
 #elif defined(S_BLKSIZE)
-#	define BFS_STAT_BLKSIZE S_BLKSIZE
+#  define BFS_STAT_BLKSIZE S_BLKSIZE
 #else
-#	define BFS_STAT_BLKSIZE 512
+#  define BFS_STAT_BLKSIZE 512
 #endif
 
 /**
diff --git a/src/trie.c b/src/trie.c
index 43df9dc..9f2e45f 100644
--- a/src/trie.c
+++ b/src/trie.c
@@ -94,9 +94,9 @@
 static_assert(CHAR_BIT == 8, "This trie implementation assumes 8-bit bytes.");
 
 #if BFS_TARGET_CLONES && (__i386__ || __x86_64__)
-#	define TARGET_CLONES_POPCNT __attribute__((target_clones("popcnt", "default")))
+#  define TARGET_CLONES_POPCNT __attribute__((target_clones("popcnt", "default")))
 #else
-#	define TARGET_CLONES_POPCNT
+#  define TARGET_CLONES_POPCNT
 #endif
 
 /** Number of bits for the sparse array bitmap, aka the range of a nibble. */
@@ -367,23 +367,23 @@ static size_t trie_node_size(unsigned int size) {
 }
 
 #if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-#	define TRIE_BSWAP(n) (n)
+#  define TRIE_BSWAP(n) (n)
 #elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-#	if __SIZEOF_SIZE_T__ == 8
-#		define TRIE_BSWAP(n) __builtin_bswap64(n)
-#	elif __SIZEOF_SIZE_T__ == 4
-#		define TRIE_BSWAP(n) __builtin_bswap32(n)
-#	endif
+#  if __SIZEOF_SIZE_T__ == 8
+#    define TRIE_BSWAP(n) __builtin_bswap64(n)
+#  elif __SIZEOF_SIZE_T__ == 4
+#    define TRIE_BSWAP(n) __builtin_bswap32(n)
+#  endif
 #endif
 
 #ifdef TRIE_BSWAP
-#	if __SIZEOF_SIZE_T__ == __SIZEOF_LONG_LONG__
-#		define TRIE_CTZ(n) __builtin_ctzll(n)
-#	elif __SIZEOF_SIZE_T__ == __SIZEOF_LONG__
-#		define TRIE_CTZ(n) __builtin_ctzl(n)
-#	elif __SIZEOF_SIZE_T__ == __SIZEOF_INT__
-#		define TRIE_CTZ(n) __builtin_ctz(n)
-#	endif
+#  if __SIZEOF_SIZE_T__ == __SIZEOF_LONG_LONG__
+#    define TRIE_CTZ(n) __builtin_ctzll(n)
+#  elif __SIZEOF_SIZE_T__ == __SIZEOF_LONG__
+#    define TRIE_CTZ(n) __builtin_ctzl(n)
+#  elif __SIZEOF_SIZE_T__ == __SIZEOF_INT__
+#    define TRIE_CTZ(n) __builtin_ctz(n)
+#  endif
 #endif
 
 /** Find the offset of the first nibble that differs between two keys. */
diff --git a/src/xregex.c b/src/xregex.c
index 5f5480f..a7153b7 100644
--- a/src/xregex.c
+++ b/src/xregex.c
@@ -9,10 +9,10 @@
 #include <string.h>
 
 #if BFS_WITH_ONIGURUMA
-#	include <langinfo.h>
-#	include <oniguruma.h>
+#  include <langinfo.h>
+#  include <oniguruma.h>
 #else
-#	include <regex.h>
+#  include <regex.h>
 #endif
 
 struct bfs_regex {
@@ -43,20 +43,20 @@ static int bfs_onig_encoding(OnigEncoding *penc) {
 	// from the current locale.
 	const char *charmap = nl_langinfo(CODESET);
 	if (charmap) {
-#define BFS_MAP_ENCODING(name, value)				\
-		do {						\
-			if (strcmp(charmap, name) == 0) {	\
-				enc = value;			\
-			}					\
+#define BFS_MAP_ENCODING(name, value) \
+		do { \
+			if (strcmp(charmap, name) == 0) { \
+				enc = value; \
+			} \
 		} while (0)
-#define BFS_MAP_ENCODING2(name1, name2, value)		\
-		do {					\
-			BFS_MAP_ENCODING(name1, value);	\
-			BFS_MAP_ENCODING(name2, value);	\
+#define BFS_MAP_ENCODING2(name1, name2, value) \
+		do { \
+			BFS_MAP_ENCODING(name1, value); \
+			BFS_MAP_ENCODING(name2, value); \
 		} while (0)
 
 		// These names were found with locale -m on Linux and FreeBSD
-#define BFS_MAP_ISO_8859(n)						\
+#define BFS_MAP_ISO_8859(n) \
 		BFS_MAP_ENCODING2("ISO-8859-" #n, "ISO8859-" #n, ONIG_ENCODING_ISO_8859_ ## n)
 
 		BFS_MAP_ISO_8859(1);
@@ -78,7 +78,7 @@ static int bfs_onig_encoding(OnigEncoding *penc) {
 
 		BFS_MAP_ENCODING("UTF-8", ONIG_ENCODING_UTF8);
 
-#define BFS_MAP_EUC(name)						\
+#define BFS_MAP_EUC(name) \
 		BFS_MAP_ENCODING2("EUC-" #name, "euc" #name, ONIG_ENCODING_EUC_ ## name)
 
 		BFS_MAP_EUC(JP);
diff --git a/src/xspawn.c b/src/xspawn.c
index a185200..a6d18a3 100644
--- a/src/xspawn.c
+++ b/src/xspawn.c
@@ -16,7 +16,7 @@
 #include <unistd.h>
 
 #if BFS_USE_PATHS_H
-#	include <paths.h>
+#  include <paths.h>
 #endif
 
 /**
-- 
cgit v1.2.3


From 3fa8f1a22ad120322bbc68823ca9759d8939b131 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 16 Jan 2024 11:06:28 -0500
Subject: stat: Expose bfs_stat{,x}_convert()

---
 src/stat.c | 183 +++++++++++++++++++++++++++++--------------------------------
 src/stat.h |  41 +++++++++++---
 2 files changed, 121 insertions(+), 103 deletions(-)

(limited to 'src/stat.h')

diff --git a/src/stat.c b/src/stat.c
index 91aa092..8da1466 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -13,20 +13,12 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
-#if defined(STATX_BASIC_STATS) && (!__ANDROID__ || __ANDROID_API__ >= 30)
-#  define BFS_HAS_LIBC_STATX true
-#elif __linux__
+#if BFS_USE_STATX && !BFS_HAS_LIBC_STATX
 #  include <linux/stat.h>
 #  include <sys/syscall.h>
 #  include <unistd.h>
 #endif
 
-#ifndef BFS_USE_STATX
-#  if BFS_HAS_LIBC_STATX || defined(SYS_statx)
-#    define BFS_USE_STATX true
-#  endif
-#endif
-
 const char *bfs_stat_field_name(enum bfs_stat_field field) {
 	switch (field) {
 	case BFS_STAT_DEV:
@@ -65,56 +57,53 @@ const char *bfs_stat_field_name(enum bfs_stat_field field) {
 	return "???";
 }
 
-/**
- * Convert a struct stat to a struct bfs_stat.
- */
-static void bfs_stat_convert(const struct stat *statbuf, struct bfs_stat *buf) {
-	buf->mask = 0;
+void bfs_stat_convert(struct bfs_stat *dest, const struct stat *src) {
+	dest->mask = 0;
 
-	buf->dev = statbuf->st_dev;
-	buf->mask |= BFS_STAT_DEV;
+	dest->dev = src->st_dev;
+	dest->mask |= BFS_STAT_DEV;
 
-	buf->ino = statbuf->st_ino;
-	buf->mask |= BFS_STAT_INO;
+	dest->ino = src->st_ino;
+	dest->mask |= BFS_STAT_INO;
 
-	buf->mode = statbuf->st_mode;
-	buf->mask |= BFS_STAT_TYPE | BFS_STAT_MODE;
+	dest->mode = src->st_mode;
+	dest->mask |= BFS_STAT_TYPE | BFS_STAT_MODE;
 
-	buf->nlink = statbuf->st_nlink;
-	buf->mask |= BFS_STAT_NLINK;
+	dest->nlink = src->st_nlink;
+	dest->mask |= BFS_STAT_NLINK;
 
-	buf->gid = statbuf->st_gid;
-	buf->mask |= BFS_STAT_GID;
+	dest->gid = src->st_gid;
+	dest->mask |= BFS_STAT_GID;
 
-	buf->uid = statbuf->st_uid;
-	buf->mask |= BFS_STAT_UID;
+	dest->uid = src->st_uid;
+	dest->mask |= BFS_STAT_UID;
 
-	buf->size = statbuf->st_size;
-	buf->mask |= BFS_STAT_SIZE;
+	dest->size = src->st_size;
+	dest->mask |= BFS_STAT_SIZE;
 
-	buf->blocks = statbuf->st_blocks;
-	buf->mask |= BFS_STAT_BLOCKS;
+	dest->blocks = src->st_blocks;
+	dest->mask |= BFS_STAT_BLOCKS;
 
-	buf->rdev = statbuf->st_rdev;
-	buf->mask |= BFS_STAT_RDEV;
+	dest->rdev = src->st_rdev;
+	dest->mask |= BFS_STAT_RDEV;
 
 #if BSD
-	buf->attrs = statbuf->st_flags;
-	buf->mask |= BFS_STAT_ATTRS;
+	dest->attrs = src->st_flags;
+	dest->mask |= BFS_STAT_ATTRS;
 #endif
 
-	buf->atime = statbuf->st_atim;
-	buf->mask |= BFS_STAT_ATIME;
+	dest->atime = src->st_atim;
+	dest->mask |= BFS_STAT_ATIME;
 
-	buf->ctime = statbuf->st_ctim;
-	buf->mask |= BFS_STAT_CTIME;
+	dest->ctime = src->st_ctim;
+	dest->mask |= BFS_STAT_CTIME;
 
-	buf->mtime = statbuf->st_mtim;
-	buf->mask |= BFS_STAT_MTIME;
+	dest->mtime = src->st_mtim;
+	dest->mask |= BFS_STAT_MTIME;
 
 #if __APPLE__ || __FreeBSD__ || __NetBSD__
-	buf->btime = statbuf->st_birthtim;
-	buf->mask |= BFS_STAT_BTIME;
+	dest->btime = src->st_birthtim;
+	dest->mask |= BFS_STAT_BTIME;
 #endif
 }
 
@@ -125,7 +114,7 @@ static int bfs_stat_impl(int at_fd, const char *at_path, int at_flags, struct bf
 	struct stat statbuf;
 	int ret = fstatat(at_fd, at_path, &statbuf, at_flags);
 	if (ret == 0) {
-		bfs_stat_convert(&statbuf, buf);
+		bfs_stat_convert(buf, &statbuf);
 	}
 	return ret;
 }
@@ -150,82 +139,86 @@ static int bfs_statx(int at_fd, const char *at_path, int at_flags, unsigned int
 	return ret;
 }
 
-/**
- * bfs_stat() implementation backed by statx().
- */
-static int bfs_statx_impl(int at_fd, const char *at_path, int at_flags, struct bfs_stat *buf) {
-	unsigned int mask = STATX_BASIC_STATS | STATX_BTIME;
-	struct statx xbuf;
-	int ret = bfs_statx(at_fd, at_path, at_flags, mask, &xbuf);
-	if (ret != 0) {
-		return ret;
-	}
-
+int bfs_statx_convert(struct bfs_stat *dest, const struct statx *src) {
 	// Callers shouldn't have to check anything except the times
 	const unsigned int guaranteed = STATX_BASIC_STATS & ~(STATX_ATIME | STATX_CTIME | STATX_MTIME);
-	if ((xbuf.stx_mask & guaranteed) != guaranteed) {
+	if ((src->stx_mask & guaranteed) != guaranteed) {
 		errno = ENOTSUP;
 		return -1;
 	}
 
-	buf->mask = 0;
+	dest->mask = 0;
 
-	buf->dev = xmakedev(xbuf.stx_dev_major, xbuf.stx_dev_minor);
-	buf->mask |= BFS_STAT_DEV;
+	dest->dev = xmakedev(src->stx_dev_major, src->stx_dev_minor);
+	dest->mask |= BFS_STAT_DEV;
 
-	buf->ino = xbuf.stx_ino;
-	buf->mask |= BFS_STAT_INO;
+	dest->ino = src->stx_ino;
+	dest->mask |= BFS_STAT_INO;
 
-	buf->mode = xbuf.stx_mode;
-	buf->mask |= BFS_STAT_TYPE;
-	buf->mask |= BFS_STAT_MODE;
+	dest->mode = src->stx_mode;
+	dest->mask |= BFS_STAT_TYPE;
+	dest->mask |= BFS_STAT_MODE;
 
-	buf->nlink = xbuf.stx_nlink;
-	buf->mask |= BFS_STAT_NLINK;
+	dest->nlink = src->stx_nlink;
+	dest->mask |= BFS_STAT_NLINK;
 
-	buf->gid = xbuf.stx_gid;
-	buf->mask |= BFS_STAT_GID;
+	dest->gid = src->stx_gid;
+	dest->mask |= BFS_STAT_GID;
 
-	buf->uid = xbuf.stx_uid;
-	buf->mask |= BFS_STAT_UID;
+	dest->uid = src->stx_uid;
+	dest->mask |= BFS_STAT_UID;
 
-	buf->size = xbuf.stx_size;
-	buf->mask |= BFS_STAT_SIZE;
+	dest->size = src->stx_size;
+	dest->mask |= BFS_STAT_SIZE;
 
-	buf->blocks = xbuf.stx_blocks;
-	buf->mask |= BFS_STAT_BLOCKS;
+	dest->blocks = src->stx_blocks;
+	dest->mask |= BFS_STAT_BLOCKS;
 
-	buf->rdev = xmakedev(xbuf.stx_rdev_major, xbuf.stx_rdev_minor);
-	buf->mask |= BFS_STAT_RDEV;
+	dest->rdev = xmakedev(src->stx_rdev_major, src->stx_rdev_minor);
+	dest->mask |= BFS_STAT_RDEV;
 
-	buf->attrs = xbuf.stx_attributes;
-	buf->mask |= BFS_STAT_ATTRS;
+	dest->attrs = src->stx_attributes;
+	dest->mask |= BFS_STAT_ATTRS;
 
-	if (xbuf.stx_mask & STATX_ATIME) {
-		buf->atime.tv_sec = xbuf.stx_atime.tv_sec;
-		buf->atime.tv_nsec = xbuf.stx_atime.tv_nsec;
-		buf->mask |= BFS_STAT_ATIME;
+	if (src->stx_mask & STATX_ATIME) {
+		dest->atime.tv_sec = src->stx_atime.tv_sec;
+		dest->atime.tv_nsec = src->stx_atime.tv_nsec;
+		dest->mask |= BFS_STAT_ATIME;
 	}
 
-	if (xbuf.stx_mask & STATX_BTIME) {
-		buf->btime.tv_sec = xbuf.stx_btime.tv_sec;
-		buf->btime.tv_nsec = xbuf.stx_btime.tv_nsec;
-		buf->mask |= BFS_STAT_BTIME;
+	if (src->stx_mask & STATX_BTIME) {
+		dest->btime.tv_sec = src->stx_btime.tv_sec;
+		dest->btime.tv_nsec = src->stx_btime.tv_nsec;
+		dest->mask |= BFS_STAT_BTIME;
 	}
 
-	if (xbuf.stx_mask & STATX_CTIME) {
-		buf->ctime.tv_sec = xbuf.stx_ctime.tv_sec;
-		buf->ctime.tv_nsec = xbuf.stx_ctime.tv_nsec;
-		buf->mask |= BFS_STAT_CTIME;
+	if (src->stx_mask & STATX_CTIME) {
+		dest->ctime.tv_sec = src->stx_ctime.tv_sec;
+		dest->ctime.tv_nsec = src->stx_ctime.tv_nsec;
+		dest->mask |= BFS_STAT_CTIME;
 	}
 
-	if (xbuf.stx_mask & STATX_MTIME) {
-		buf->mtime.tv_sec = xbuf.stx_mtime.tv_sec;
-		buf->mtime.tv_nsec = xbuf.stx_mtime.tv_nsec;
-		buf->mask |= BFS_STAT_MTIME;
+	if (src->stx_mask & STATX_MTIME) {
+		dest->mtime.tv_sec = src->stx_mtime.tv_sec;
+		dest->mtime.tv_nsec = src->stx_mtime.tv_nsec;
+		dest->mask |= BFS_STAT_MTIME;
 	}
 
-	return ret;
+	return 0;
+}
+
+/**
+ * bfs_stat() implementation backed by statx().
+ */
+static int bfs_statx_impl(int at_fd, const char *at_path, int at_flags, struct bfs_stat *buf) {
+	unsigned int mask = STATX_BASIC_STATS | STATX_BTIME;
+	struct statx xbuf;
+	int ret = bfs_statx(at_fd, at_path, at_flags, mask, &xbuf);
+	if (ret != 0) {
+		return ret;
+	}
+
+	return bfs_statx_convert(buf, &xbuf);
 }
 
 #endif // BFS_USE_STATX
@@ -306,7 +299,7 @@ int bfs_stat(int at_fd, const char *at_path, enum bfs_stat_flags flags, struct b
 
 	struct stat statbuf;
 	if (fstat(at_fd, &statbuf) == 0) {
-		bfs_stat_convert(&statbuf, buf);
+		bfs_stat_convert(buf, &statbuf);
 		return 0;
 	} else {
 		return -1;
diff --git a/src/stat.h b/src/stat.h
index e08dd4d..68a5c13 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -13,13 +13,34 @@
 #define BFS_STAT_H
 
 #include "config.h"
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <time.h>
 
+#if defined(STATX_BASIC_STATS) && (!__ANDROID__ || __ANDROID_API__ >= 30)
+#  define BFS_HAS_LIBC_STATX true
+#elif __linux__
+#  include <linux/stat.h>
+#endif
+
+#ifndef BFS_USE_STATX
+#  ifdef STATX_BASIC_STATS
+#    define BFS_USE_STATX true
+#  endif
+#endif
+
 #if BFS_USE_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.
  */
@@ -60,14 +81,6 @@ 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.
  */
@@ -124,6 +137,18 @@ struct bfs_stat {
  */
 int bfs_stat(int at_fd, const char *at_path, enum bfs_stat_flags flags, struct bfs_stat *buf);
 
+/**
+ * Convert struct stat to struct bfs_stat.
+ */
+void bfs_stat_convert(struct bfs_stat *dest, const struct stat *src);
+
+#if BFS_USE_STATX
+/**
+ * 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.
  */
-- 
cgit v1.2.3


From cb45babbeff337df9e0d96a251db2b9b325f9d18 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 16 Jan 2024 12:32:38 -0500
Subject: stat: Expose bfs_{fstatat,statx}_flags()

---
 src/stat.c | 58 +++++++++++++++++++++++++++++++++++++---------------------
 src/stat.h | 10 ++++++++++
 2 files changed, 47 insertions(+), 21 deletions(-)

(limited to 'src/stat.h')

diff --git a/src/stat.c b/src/stat.c
index 8da1466..4e7e7e2 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -57,6 +57,20 @@ const char *bfs_stat_field_name(enum bfs_stat_field field) {
 	return "???";
 }
 
+int bfs_fstatat_flags(enum bfs_stat_flags flags) {
+	int ret = 0;
+
+	if (flags & BFS_STAT_NOFOLLOW) {
+		ret |= AT_SYMLINK_NOFOLLOW;
+	}
+
+#if defined(AT_NO_AUTOMOUNT) && (!__GNU__ || __GLIBC_PREREQ(2, 35))
+	ret |= AT_NO_AUTOMOUNT;
+#endif
+
+	return ret;
+}
+
 void bfs_stat_convert(struct bfs_stat *dest, const struct stat *src) {
 	dest->mask = 0;
 
@@ -139,6 +153,16 @@ static int bfs_statx(int at_fd, const char *at_path, int at_flags, unsigned int
 	return ret;
 }
 
+int bfs_statx_flags(enum bfs_stat_flags flags) {
+	int ret = bfs_fstatat_flags(flags);
+
+	if (flags & BFS_STAT_NOSYNC) {
+		ret |= AT_STATX_DONT_SYNC;
+	}
+
+	return ret;
+}
+
 int bfs_statx_convert(struct bfs_stat *dest, const struct statx *src) {
 	// Callers shouldn't have to check anything except the times
 	const unsigned int guaranteed = STATX_BASIC_STATS & ~(STATX_ATIME | STATX_CTIME | STATX_MTIME);
@@ -226,12 +250,12 @@ static int bfs_statx_impl(int at_fd, const char *at_path, int at_flags, struct b
 /**
  * Calls the stat() implementation with explicit flags.
  */
-static int bfs_stat_explicit(int at_fd, const char *at_path, int at_flags, int x_flags, struct bfs_stat *buf) {
+static int bfs_stat_explicit(int at_fd, const char *at_path, int at_flags, struct bfs_stat *buf) {
 #if BFS_USE_STATX
 	static atomic bool has_statx = true;
 
 	if (load(&has_statx, relaxed)) {
-		int ret = bfs_statx_impl(at_fd, at_path, at_flags | x_flags, buf);
+		int ret = bfs_statx_impl(at_fd, at_path, at_flags, buf);
 		// EPERM is commonly returned in a seccomp() sandbox that does
 		// not allow statx()
 		if (ret != 0 && (errno == ENOSYS || errno == EPERM)) {
@@ -240,6 +264,8 @@ static int bfs_stat_explicit(int at_fd, const char *at_path, int at_flags, int x
 			return ret;
 		}
 	}
+
+	at_flags &= ~AT_STATX_DONT_SYNC;
 #endif
 
 	return bfs_stat_impl(at_fd, at_path, at_flags, buf);
@@ -248,39 +274,29 @@ static int bfs_stat_explicit(int at_fd, const char *at_path, int at_flags, int x
 /**
  * Implements the BFS_STAT_TRYFOLLOW retry logic.
  */
-static int bfs_stat_tryfollow(int at_fd, const char *at_path, int at_flags, int x_flags, enum bfs_stat_flags bfs_flags, struct bfs_stat *buf) {
-	int ret = bfs_stat_explicit(at_fd, at_path, at_flags, x_flags, buf);
+static int bfs_stat_tryfollow(int at_fd, const char *at_path, int at_flags, enum bfs_stat_flags bfs_flags, struct bfs_stat *buf) {
+	int ret = bfs_stat_explicit(at_fd, at_path, at_flags, buf);
 
 	if (ret != 0
 	    && (bfs_flags & (BFS_STAT_NOFOLLOW | BFS_STAT_TRYFOLLOW)) == BFS_STAT_TRYFOLLOW
 	    && errno_is_like(ENOENT))
 	{
 		at_flags |= AT_SYMLINK_NOFOLLOW;
-		ret = bfs_stat_explicit(at_fd, at_path, at_flags, x_flags, buf);
+		ret = bfs_stat_explicit(at_fd, at_path, at_flags, buf);
 	}
 
 	return ret;
 }
 
 int bfs_stat(int at_fd, const char *at_path, enum bfs_stat_flags flags, struct bfs_stat *buf) {
-	int at_flags = 0;
-	if (flags & BFS_STAT_NOFOLLOW) {
-		at_flags |= AT_SYMLINK_NOFOLLOW;
-	}
-
-#if defined(AT_NO_AUTOMOUNT) && (!__GNU__ || __GLIBC_PREREQ(2, 35))
-	at_flags |= AT_NO_AUTOMOUNT;
-#endif
-
-	int x_flags = 0;
-#ifdef AT_STATX_DONT_SYNC
-	if (flags & BFS_STAT_NOSYNC) {
-		x_flags |= AT_STATX_DONT_SYNC;
-	}
+#if BFS_USE_STATX
+	int at_flags = bfs_statx_flags(flags);
+#else
+	int at_flags = bfs_fstatat_flags(flags);
 #endif
 
 	if (at_path) {
-		return bfs_stat_tryfollow(at_fd, at_path, at_flags, x_flags, flags, buf);
+		return bfs_stat_tryfollow(at_fd, at_path, at_flags, flags, buf);
 	}
 
 	// Check __GNU__ to work around https://lists.gnu.org/archive/html/bug-hurd/2021-12/msg00001.html
@@ -288,7 +304,7 @@ int bfs_stat(int at_fd, const char *at_path, enum bfs_stat_flags flags, struct b
 	static atomic bool has_at_ep = true;
 	if (load(&has_at_ep, relaxed)) {
 		at_flags |= AT_EMPTY_PATH;
-		int ret = bfs_stat_explicit(at_fd, "", at_flags, x_flags, buf);
+		int ret = bfs_stat_explicit(at_fd, "", at_flags, buf);
 		if (ret != 0 && errno == EINVAL) {
 			store(&has_at_ep, false, relaxed);
 		} else {
diff --git a/src/stat.h b/src/stat.h
index 68a5c13..17b7fe1 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -137,12 +137,22 @@ 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.
  */
-- 
cgit v1.2.3


From d59d9acbe3c458f240fc3fb406f5bd1dcd38a1c8 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Wed, 14 Feb 2024 10:58:04 -0500
Subject: stat: Pack struct bfs_stat a bit

---
 src/stat.c | 19 ++++++++-----------
 src/stat.h | 33 ++++++++++++++++-----------------
 2 files changed, 24 insertions(+), 28 deletions(-)

(limited to 'src/stat.h')

diff --git a/src/stat.c b/src/stat.c
index 4e7e7e2..36222cb 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -21,14 +21,12 @@
 
 const char *bfs_stat_field_name(enum bfs_stat_field field) {
 	switch (field) {
+	case BFS_STAT_MODE:
+		return "mode";
 	case BFS_STAT_DEV:
 		return "device number";
 	case BFS_STAT_INO:
 		return "inode nunmber";
-	case BFS_STAT_TYPE:
-		return "type";
-	case BFS_STAT_MODE:
-		return "mode";
 	case BFS_STAT_NLINK:
 		return "link count";
 	case BFS_STAT_GID:
@@ -74,15 +72,15 @@ int bfs_fstatat_flags(enum bfs_stat_flags flags) {
 void bfs_stat_convert(struct bfs_stat *dest, const struct stat *src) {
 	dest->mask = 0;
 
+	dest->mode = src->st_mode;
+	dest->mask |= BFS_STAT_MODE;
+
 	dest->dev = src->st_dev;
 	dest->mask |= BFS_STAT_DEV;
 
 	dest->ino = src->st_ino;
 	dest->mask |= BFS_STAT_INO;
 
-	dest->mode = src->st_mode;
-	dest->mask |= BFS_STAT_TYPE | BFS_STAT_MODE;
-
 	dest->nlink = src->st_nlink;
 	dest->mask |= BFS_STAT_NLINK;
 
@@ -173,16 +171,15 @@ int bfs_statx_convert(struct bfs_stat *dest, const struct statx *src) {
 
 	dest->mask = 0;
 
+	dest->mode = src->stx_mode;
+	dest->mask |= BFS_STAT_MODE;
+
 	dest->dev = xmakedev(src->stx_dev_major, src->stx_dev_minor);
 	dest->mask |= BFS_STAT_DEV;
 
 	dest->ino = src->stx_ino;
 	dest->mask |= BFS_STAT_INO;
 
-	dest->mode = src->stx_mode;
-	dest->mask |= BFS_STAT_TYPE;
-	dest->mask |= BFS_STAT_MODE;
-
 	dest->nlink = src->stx_nlink;
 	dest->mask |= BFS_STAT_NLINK;
 
diff --git a/src/stat.h b/src/stat.h
index 17b7fe1..856a2ca 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -45,21 +45,20 @@
  * 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,
 };
 
 /**
@@ -88,12 +87,12 @@ 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. */
-- 
cgit v1.2.3


From c66379749f423413913b406609dfe9311ba6e555 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Thu, 18 Apr 2024 14:53:56 -0400
Subject: Rename config.h to prelude.h

---
 src/alloc.c    |   2 +-
 src/alloc.h    |   2 +-
 src/bar.c      |   2 +-
 src/bfstd.c    |   2 +-
 src/bfstd.h    |   2 +-
 src/bftw.c     |   2 +-
 src/bit.h      |   2 +-
 src/color.c    |   2 +-
 src/color.h    |   2 +-
 src/config.h   | 377 ---------------------------------------------------------
 src/ctx.h      |   2 +-
 src/diag.c     |   2 +-
 src/diag.h     |   2 +-
 src/dir.c      |   2 +-
 src/dstring.c  |   2 +-
 src/dstring.h  |   2 +-
 src/eval.c     |   2 +-
 src/eval.h     |   2 +-
 src/exec.c     |   2 +-
 src/expr.h     |   2 +-
 src/fsade.c    |   2 +-
 src/fsade.h    |   2 +-
 src/ioq.c      |   2 +-
 src/ioq.h      |   2 +-
 src/main.c     |   4 +-
 src/mtab.c     |   2 +-
 src/mtab.h     |   2 +-
 src/opt.c      |   2 +-
 src/parse.c    |   2 +-
 src/prelude.h  | 377 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/printf.c   |   2 +-
 src/pwcache.c  |   2 +-
 src/sanity.h   |   2 +-
 src/stat.c     |   2 +-
 src/stat.h     |   2 +-
 src/thread.c   |   2 +-
 src/thread.h   |   2 +-
 src/trie.c     |   2 +-
 src/xregex.c   |   2 +-
 src/xspawn.c   |   2 +-
 src/xspawn.h   |   2 +-
 src/xtime.c    |   2 +-
 tests/alloc.c  |   2 +-
 tests/bfstd.c  |   2 +-
 tests/bit.c    |   2 +-
 tests/ioq.c    |   2 +-
 tests/main.c   |   2 +-
 tests/tests.h  |   2 +-
 tests/trie.c   |   2 +-
 tests/xspawn.c |   2 +-
 tests/xtime.c  |   2 +-
 tests/xtouch.c |   2 +-
 52 files changed, 428 insertions(+), 428 deletions(-)
 delete mode 100644 src/config.h
 create mode 100644 src/prelude.h

(limited to 'src/stat.h')

diff --git a/src/alloc.c b/src/alloc.c
index b65d0c5..ec8608f 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "alloc.h"
 #include "bit.h"
-#include "config.h"
 #include "diag.h"
 #include "sanity.h"
 #include <errno.h>
diff --git a/src/alloc.h b/src/alloc.h
index ae055bc..095134a 100644
--- a/src/alloc.h
+++ b/src/alloc.h
@@ -8,7 +8,7 @@
 #ifndef BFS_ALLOC_H
 #define BFS_ALLOC_H
 
-#include "config.h"
+#include "prelude.h"
 #include <errno.h>
 #include <stddef.h>
 #include <stdlib.h>
diff --git a/src/bar.c b/src/bar.c
index 8ab4112..184d9a0 100644
--- a/src/bar.c
+++ b/src/bar.c
@@ -1,11 +1,11 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "bar.h"
 #include "atomic.h"
 #include "bfstd.h"
 #include "bit.h"
-#include "config.h"
 #include "dstring.h"
 #include <errno.h>
 #include <fcntl.h>
diff --git a/src/bfstd.c b/src/bfstd.c
index 2499f00..e1b4804 100644
--- a/src/bfstd.c
+++ b/src/bfstd.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "bfstd.h"
 #include "bit.h"
-#include "config.h"
 #include "diag.h"
 #include "sanity.h"
 #include "thread.h"
diff --git a/src/bfstd.h b/src/bfstd.h
index fc22971..42f5d5b 100644
--- a/src/bfstd.h
+++ b/src/bfstd.h
@@ -8,7 +8,7 @@
 #ifndef BFS_BFSTD_H
 #define BFS_BFSTD_H
 
-#include "config.h"
+#include "prelude.h"
 #include "sanity.h"
 #include <stddef.h>
 
diff --git a/src/bftw.c b/src/bftw.c
index 6130c44..c4d3c17 100644
--- a/src/bftw.c
+++ b/src/bftw.c
@@ -18,10 +18,10 @@
  *   various helper functions to take fewer parameters.
  */
 
+#include "prelude.h"
 #include "bftw.h"
 #include "alloc.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include "dir.h"
 #include "dstring.h"
diff --git a/src/bit.h b/src/bit.h
index 69df21e..17cfbcf 100644
--- a/src/bit.h
+++ b/src/bit.h
@@ -8,7 +8,7 @@
 #ifndef BFS_BIT_H
 #define BFS_BIT_H
 
-#include "config.h"
+#include "prelude.h"
 #include <limits.h>
 #include <stdint.h>
 
diff --git a/src/color.c b/src/color.c
index 8c32a68..f004bf2 100644
--- a/src/color.c
+++ b/src/color.c
@@ -1,11 +1,11 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "color.h"
 #include "alloc.h"
 #include "bfstd.h"
 #include "bftw.h"
-#include "config.h"
 #include "diag.h"
 #include "dir.h"
 #include "dstring.h"
diff --git a/src/color.h b/src/color.h
index e3e7973..3278cd6 100644
--- a/src/color.h
+++ b/src/color.h
@@ -8,7 +8,7 @@
 #ifndef BFS_COLOR_H
 #define BFS_COLOR_H
 
-#include "config.h"
+#include "prelude.h"
 #include "dstring.h"
 #include <stdio.h>
 
diff --git a/src/config.h b/src/config.h
deleted file mode 100644
index 2eff1fc..0000000
--- a/src/config.h
+++ /dev/null
@@ -1,377 +0,0 @@
-// Copyright © Tavian Barnes <tavianator@tavianator.com>
-// SPDX-License-Identifier: 0BSD
-
-/**
- * Configuration and feature/platform detection.
- */
-
-#ifndef BFS_CONFIG_H
-#define BFS_CONFIG_H
-
-// Possible __STDC_VERSION__ values
-
-#define C95 199409L
-#define C99 199901L
-#define C11 201112L
-#define C17 201710L
-#define C23 202311L
-
-#include <stddef.h>
-
-#if __STDC_VERSION__ < C23
-#  include <stdalign.h>
-#  include <stdbool.h>
-#  include <stdnoreturn.h>
-#endif
-
-// bfs packaging configuration
-
-#ifndef BFS_COMMAND
-#  define BFS_COMMAND "bfs"
-#endif
-#ifndef BFS_HOMEPAGE
-#  define BFS_HOMEPAGE "https://tavianator.com/projects/bfs.html"
-#endif
-
-// This is a symbol instead of a literal so we don't have to rebuild everything
-// when the version number changes
-extern const char bfs_version[];
-
-// Check for system headers
-
-#ifdef __has_include
-
-#if __has_include(<mntent.h>)
-#  define BFS_HAS_MNTENT_H true
-#endif
-#if __has_include(<paths.h>)
-#  define BFS_HAS_PATHS_H true
-#endif
-#if __has_include(<sys/acl.h>)
-#  define BFS_HAS_SYS_ACL_H true
-#endif
-#if __has_include(<sys/capability.h>)
-#  define BFS_HAS_SYS_CAPABILITY_H true
-#endif
-#if __has_include(<sys/extattr.h>)
-#  define BFS_HAS_SYS_EXTATTR_H true
-#endif
-#if __has_include(<sys/mkdev.h>)
-#  define BFS_HAS_SYS_MKDEV_H true
-#endif
-#if __has_include(<sys/param.h>)
-#  define BFS_HAS_SYS_PARAM_H true
-#endif
-#if __has_include(<sys/sysmacros.h>)
-#  define BFS_HAS_SYS_SYSMACROS_H true
-#endif
-#if __has_include(<sys/xattr.h>)
-#  define BFS_HAS_SYS_XATTR_H true
-#endif
-#if __has_include(<threads.h>)
-#  define BFS_HAS_THREADS_H true
-#endif
-#if __has_include(<util.h>)
-#  define BFS_HAS_UTIL_H true
-#endif
-
-#else // !__has_include
-
-#define BFS_HAS_MNTENT_H __GLIBC__
-#define BFS_HAS_PATHS_H true
-#define BFS_HAS_SYS_ACL_H true
-#define BFS_HAS_SYS_CAPABILITY_H __linux__
-#define BFS_HAS_SYS_EXTATTR_H __FreeBSD__
-#define BFS_HAS_SYS_MKDEV_H false
-#define BFS_HAS_SYS_PARAM_H true
-#define BFS_HAS_SYS_SYSMACROS_H __GLIBC__
-#define BFS_HAS_SYS_XATTR_H __linux__
-#define BFS_HAS_THREADS_H (!__STDC_NO_THREADS__)
-#define BFS_HAS_UTIL_H __NetBSD__
-
-#endif // !__has_include
-
-#ifndef BFS_USE_MNTENT_H
-#  define BFS_USE_MNTENT_H BFS_HAS_MNTENT_H
-#endif
-#ifndef BFS_USE_PATHS_H
-#  define BFS_USE_PATHS_H BFS_HAS_PATHS_H
-#endif
-#ifndef BFS_USE_SYS_ACL_H
-#  define BFS_USE_SYS_ACL_H (BFS_HAS_SYS_ACL_H && !__illumos__ && (!__linux__ || BFS_USE_LIBACL))
-#endif
-#ifndef BFS_USE_SYS_CAPABILITY_H
-#  define BFS_USE_SYS_CAPABILITY_H (BFS_HAS_SYS_CAPABILITY_H && !__FreeBSD__ && (!__linux__ || BFS_USE_LIBCAP))
-#endif
-#ifndef BFS_USE_SYS_EXTATTR_H
-#  define BFS_USE_SYS_EXTATTR_H (BFS_HAS_SYS_EXTATTR_H && !__DragonFly__)
-#endif
-#ifndef BFS_USE_SYS_MKDEV_H
-#  define BFS_USE_SYS_MKDEV_H BFS_HAS_SYS_MKDEV_H
-#endif
-#ifndef BFS_USE_SYS_PARAM_H
-#  define BFS_USE_SYS_PARAM_H BFS_HAS_SYS_PARAM_H
-#endif
-#ifndef BFS_USE_SYS_SYSMACROS_H
-#  define BFS_USE_SYS_SYSMACROS_H BFS_HAS_SYS_SYSMACROS_H
-#endif
-#ifndef BFS_USE_SYS_XATTR_H
-#  define BFS_USE_SYS_XATTR_H BFS_HAS_SYS_XATTR_H
-#endif
-#ifndef BFS_USE_THREADS_H
-#  define BFS_USE_THREADS_H BFS_HAS_THREADS_H
-#endif
-#ifndef BFS_USE_UTIL_H
-#  define BFS_USE_UTIL_H BFS_HAS_UTIL_H
-#endif
-
-// Stub out feature detection on old/incompatible compilers
-
-#ifndef __has_feature
-#  define __has_feature(feat) false
-#endif
-
-#ifndef __has_c_attribute
-#  define __has_c_attribute(attr) false
-#endif
-
-#ifndef __has_attribute
-#  define __has_attribute(attr) false
-#endif
-
-// Platform detection
-
-// Get the definition of BSD if available
-#if BFS_USE_SYS_PARAM_H
-#  include <sys/param.h>
-#endif
-
-#ifndef __GLIBC_PREREQ
-#  define __GLIBC_PREREQ(maj, min) false
-#endif
-
-#ifndef __NetBSD_Prereq__
-#  define __NetBSD_Prereq__(maj, min, patch) false
-#endif
-
-// Fundamental utilities
-
-/**
- * Get the length of an array.
- */
-#define countof(array) (sizeof(array) / sizeof(0[array]))
-
-/**
- * False sharing/destructive interference/largest cache line size.
- */
-#ifdef __GCC_DESTRUCTIVE_SIZE
-#  define FALSE_SHARING_SIZE __GCC_DESTRUCTIVE_SIZE
-#else
-#  define FALSE_SHARING_SIZE 64
-#endif
-
-/**
- * True sharing/constructive interference/smallest cache line size.
- */
-#ifdef __GCC_CONSTRUCTIVE_SIZE
-#  define TRUE_SHARING_SIZE __GCC_CONSTRUCTIVE_SIZE
-#else
-#  define TRUE_SHARING_SIZE 64
-#endif
-
-/**
- * Alignment specifier that avoids false sharing.
- */
-#define cache_align alignas(FALSE_SHARING_SIZE)
-
-#if __COSMOPOLITAN__
-typedef long double max_align_t;
-#endif
-
-// Wrappers for attributes
-
-/**
- * Silence warnings about switch/case fall-throughs.
- */
-#if __has_attribute(fallthrough)
-#  define fallthru __attribute__((fallthrough))
-#else
-#  define fallthru ((void)0)
-#endif
-
-/**
- * Silence warnings about unused declarations.
- */
-#if __has_attribute(unused)
-#  define attr_maybe_unused __attribute__((unused))
-#else
-#  define attr_maybe_unused
-#endif
-
-/**
- * Warn if a value is unused.
- */
-#if __has_attribute(warn_unused_result)
-#  define attr_nodiscard __attribute__((warn_unused_result))
-#else
-#  define attr_nodiscard
-#endif
-
-/**
- * Hint to avoid inlining a function.
- */
-#if __has_attribute(noinline)
-#  define attr_noinline __attribute__((noinline))
-#else
-#  define attr_noinline
-#endif
-
-/**
- * Hint that a function is unlikely to be called.
- */
-#if __has_attribute(cold)
-#  define attr_cold attr_noinline __attribute__((cold))
-#else
-#  define attr_cold attr_noinline
-#endif
-
-/**
- * Adds compiler warnings for bad printf()-style function calls, if supported.
- */
-#if __has_attribute(format)
-#  define attr_printf(fmt, args) __attribute__((format(printf, fmt, args)))
-#else
-#  define attr_printf(fmt, args)
-#endif
-
-/**
- * Annotates allocator-like functions.
- */
-#if __has_attribute(malloc)
-#  if __GNUC__ >= 11 && !__OPTIMIZE__ // malloc(deallocator) disables inlining on GCC
-#    define attr_malloc(...) attr_nodiscard __attribute__((malloc(__VA_ARGS__)))
-#  else
-#    define attr_malloc(...) attr_nodiscard __attribute__((malloc))
-#  endif
-#else
-#  define attr_malloc(...) attr_nodiscard
-#endif
-
-/**
- * Specifies that a function returns allocations with a given alignment.
- */
-#if __has_attribute(alloc_align)
-#  define attr_alloc_align(param) __attribute__((alloc_align(param)))
-#else
-#  define attr_alloc_align(param)
-#endif
-
-/**
- * Specifies that a function returns allocations with a given size.
- */
-#if __has_attribute(alloc_size)
-#  define attr_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
-#else
-#  define attr_alloc_size(...)
-#endif
-
-/**
- * Shorthand for attr_alloc_align() and attr_alloc_size().
- */
-#define attr_aligned_alloc(align, ...) \
-	attr_alloc_align(align) \
-	attr_alloc_size(__VA_ARGS__)
-
-/**
- * Check if function multiversioning via GNU indirect functions (ifunc) is supported.
- */
-#ifndef BFS_USE_TARGET_CLONES
-#  if __has_attribute(target_clones) && (__GLIBC__ || __FreeBSD__)
-#    define BFS_USE_TARGET_CLONES true
-#  endif
-#endif
-
-/**
- * Apply the target_clones attribute, if available.
- */
-#if BFS_USE_TARGET_CLONES
-#  define attr_target_clones(...) __attribute__((target_clones(__VA_ARGS__)))
-#else
-#  define attr_target_clones(...)
-#endif
-
-/**
- * Shorthand for multiple attributes at once. attr(a, b(c), d) is equivalent to
- *
- *     attr_a
- *     attr_b(c)
- *     attr_d
- */
-#define attr(...) \
-	attr__(attr_##__VA_ARGS__, none, none, none, none, none, none, none, none, none, )
-
-/**
- * attr() helper.  For exposition, pretend we support only 2 args, instead of 9.
- * There are a few cases:
- *
- *     attr()
- *         => attr__(attr_, none, none)
- *         => attr_                =>
- *            attr_none            =>
- *            attr_too_many_none() =>
- *
- *     attr(a)
- *         => attr__(attr_a, none, none)
- *         => attr_a               => __attribute__((a))
- *            attr_none            =>
- *            attr_too_many_none() =>
- *
- *     attr(a, b(c))
- *         => attr__(attr_a, b(c), none, none)
- *         => attr_a                   => __attribute__((a))
- *            attr_b(c)                => __attribute__((b(c)))
- *            attr_too_many_none(none) =>
- *
- *     attr(a, b(c), d)
- *         => attr__(attr_a, b(c), d, none, none)
- *         => attr_a                      => __attribute__((a))
- *            attr_b(c)                   => __attribute__((b(c)))
- *            attr_too_many_d(none, none) => error
- *
- * Some attribute names are the same as standard library functions, e.g. printf.
- * Standard libraries are permitted to define these functions as macros, like
- *
- *     #define printf(...) __builtin_printf(__VA_ARGS__)
- *
- * The token paste in
- *
- *     #define attr(...) attr__(attr_##__VA_ARGS__, none, none)
- *
- * is necessary to prevent macro expansion before evaluating attr__().
- * Otherwise, we could get
- *
- *     attr(printf(1, 2))
- *         => attr__(__builtin_printf(1, 2), none, none)
- *         => attr____builtin_printf(1, 2)
- *         => error
- */
-#define attr__(a1, a2, a3, a4, a5, a6, a7, a8, a9, none, ...) \
-	a1 \
-	attr_##a2 \
-	attr_##a3 \
-	attr_##a4 \
-	attr_##a5 \
-	attr_##a6 \
-	attr_##a7 \
-	attr_##a8 \
-	attr_##a9 \
-	attr_too_many_##none(__VA_ARGS__)
-
-// Ignore `attr_none` from expanding 1-9 argument attr(a1, a2, ...)
-#define attr_none
-// Ignore `attr_` from expanding 0-argument attr()
-#define attr_
-// Only trigger an error on more than 9 arguments
-#define attr_too_many_none(...)
-
-#endif // BFS_CONFIG_H
diff --git a/src/ctx.h b/src/ctx.h
index e14db21..fc3020c 100644
--- a/src/ctx.h
+++ b/src/ctx.h
@@ -8,9 +8,9 @@
 #ifndef BFS_CTX_H
 #define BFS_CTX_H
 
+#include "prelude.h"
 #include "alloc.h"
 #include "bftw.h"
-#include "config.h"
 #include "diag.h"
 #include "expr.h"
 #include "trie.h"
diff --git a/src/diag.c b/src/diag.c
index cb27b92..deb6f26 100644
--- a/src/diag.c
+++ b/src/diag.c
@@ -1,11 +1,11 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "diag.h"
 #include "alloc.h"
 #include "bfstd.h"
 #include "color.h"
-#include "config.h"
 #include "ctx.h"
 #include "dstring.h"
 #include "expr.h"
diff --git a/src/diag.h b/src/diag.h
index 4054c48..2b13609 100644
--- a/src/diag.h
+++ b/src/diag.h
@@ -8,7 +8,7 @@
 #ifndef BFS_DIAG_H
 #define BFS_DIAG_H
 
-#include "config.h"
+#include "prelude.h"
 #include <stdarg.h>
 
 /**
diff --git a/src/dir.c b/src/dir.c
index 98518f2..53c9be3 100644
--- a/src/dir.c
+++ b/src/dir.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "dir.h"
 #include "alloc.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include "sanity.h"
 #include "trie.h"
diff --git a/src/dstring.c b/src/dstring.c
index 10b0fad..913dda8 100644
--- a/src/dstring.c
+++ b/src/dstring.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "dstring.h"
 #include "alloc.h"
 #include "bit.h"
-#include "config.h"
 #include "diag.h"
 #include <stdarg.h>
 #include <stddef.h>
diff --git a/src/dstring.h b/src/dstring.h
index 6006199..9ea7eb9 100644
--- a/src/dstring.h
+++ b/src/dstring.h
@@ -8,8 +8,8 @@
 #ifndef BFS_DSTRING_H
 #define BFS_DSTRING_H
 
+#include "prelude.h"
 #include "bfstd.h"
-#include "config.h"
 #include <stdarg.h>
 #include <stddef.h>
 
diff --git a/src/eval.c b/src/eval.c
index d0112c2..b103912 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -5,12 +5,12 @@
  * Implementation of all the primary expressions.
  */
 
+#include "prelude.h"
 #include "eval.h"
 #include "bar.h"
 #include "bfstd.h"
 #include "bftw.h"
 #include "color.h"
-#include "config.h"
 #include "ctx.h"
 #include "diag.h"
 #include "dir.h"
diff --git a/src/eval.h b/src/eval.h
index ae43628..4dd7996 100644
--- a/src/eval.h
+++ b/src/eval.h
@@ -9,7 +9,7 @@
 #ifndef BFS_EVAL_H
 #define BFS_EVAL_H
 
-#include "config.h"
+#include "prelude.h"
 
 struct bfs_ctx;
 struct bfs_expr;
diff --git a/src/exec.c b/src/exec.c
index 60bfd28..e782d49 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -1,12 +1,12 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "exec.h"
 #include "alloc.h"
 #include "bfstd.h"
 #include "bftw.h"
 #include "color.h"
-#include "config.h"
 #include "ctx.h"
 #include "diag.h"
 #include "dstring.h"
diff --git a/src/expr.h b/src/expr.h
index 75cb5fd..7bcace7 100644
--- a/src/expr.h
+++ b/src/expr.h
@@ -8,8 +8,8 @@
 #ifndef BFS_EXPR_H
 #define BFS_EXPR_H
 
+#include "prelude.h"
 #include "color.h"
-#include "config.h"
 #include "eval.h"
 #include "stat.h"
 #include <sys/types.h>
diff --git a/src/fsade.c b/src/fsade.c
index 0810c7f..34a4d57 100644
--- a/src/fsade.c
+++ b/src/fsade.c
@@ -1,11 +1,11 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "fsade.h"
 #include "atomic.h"
 #include "bfstd.h"
 #include "bftw.h"
-#include "config.h"
 #include "dir.h"
 #include "dstring.h"
 #include "sanity.h"
diff --git a/src/fsade.h b/src/fsade.h
index 1f1dbfc..6300852 100644
--- a/src/fsade.h
+++ b/src/fsade.h
@@ -9,7 +9,7 @@
 #ifndef BFS_FSADE_H
 #define BFS_FSADE_H
 
-#include "config.h"
+#include "prelude.h"
 
 #define BFS_CAN_CHECK_ACL BFS_USE_SYS_ACL_H
 
diff --git a/src/ioq.c b/src/ioq.c
index b936681..189bdac 100644
--- a/src/ioq.c
+++ b/src/ioq.c
@@ -118,12 +118,12 @@
  * [1]: https://arxiv.org/abs/2201.02179
  */
 
+#include "prelude.h"
 #include "ioq.h"
 #include "alloc.h"
 #include "atomic.h"
 #include "bfstd.h"
 #include "bit.h"
-#include "config.h"
 #include "diag.h"
 #include "dir.h"
 #include "stat.h"
diff --git a/src/ioq.h b/src/ioq.h
index 818eea6..d8e1573 100644
--- a/src/ioq.h
+++ b/src/ioq.h
@@ -8,7 +8,7 @@
 #ifndef BFS_IOQ_H
 #define BFS_IOQ_H
 
-#include "config.h"
+#include "prelude.h"
 #include "dir.h"
 #include "stat.h"
 #include <stddef.h>
diff --git a/src/main.c b/src/main.c
index e120f03..9d8b206 100644
--- a/src/main.c
+++ b/src/main.c
@@ -26,7 +26,7 @@
  *     - bit.h         (bit manipulation)
  *     - bfstd.[ch]    (standard library wrappers/polyfills)
  *     - color.[ch]    (for pretty terminal colors)
- *     - config.h      (configuration and feature/platform detection)
+ *     - prelude.h     (configuration and feature/platform detection)
  *     - diag.[ch]     (formats diagnostic messages)
  *     - dir.[ch]      (a directory API facade)
  *     - dstring.[ch]  (a dynamic string library)
@@ -45,8 +45,8 @@
  *     - xtime.[ch]    (date/time handling utilities)
  */
 
+#include "prelude.h"
 #include "bfstd.h"
-#include "config.h"
 #include "ctx.h"
 #include "diag.h"
 #include "eval.h"
diff --git a/src/mtab.c b/src/mtab.c
index 86ae151..7905d14 100644
--- a/src/mtab.c
+++ b/src/mtab.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "mtab.h"
 #include "alloc.h"
 #include "bfstd.h"
-#include "config.h"
 #include "stat.h"
 #include "trie.h"
 #include <errno.h>
diff --git a/src/mtab.h b/src/mtab.h
index d99d78f..67290c2 100644
--- a/src/mtab.h
+++ b/src/mtab.h
@@ -8,7 +8,7 @@
 #ifndef BFS_MTAB_H
 #define BFS_MTAB_H
 
-#include "config.h"
+#include "prelude.h"
 
 struct bfs_stat;
 
diff --git a/src/opt.c b/src/opt.c
index b74b4e1..ffc795b 100644
--- a/src/opt.c
+++ b/src/opt.c
@@ -25,11 +25,11 @@
  * effects are reachable at all, skipping the traversal if not.
  */
 
+#include "prelude.h"
 #include "opt.h"
 #include "bftw.h"
 #include "bit.h"
 #include "color.h"
-#include "config.h"
 #include "ctx.h"
 #include "diag.h"
 #include "dir.h"
diff --git a/src/parse.c b/src/parse.c
index a3e32fe..c2ae58f 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -8,12 +8,12 @@
  * flags like always-true options, and skipping over paths wherever they appear.
  */
 
+#include "prelude.h"
 #include "parse.h"
 #include "alloc.h"
 #include "bfstd.h"
 #include "bftw.h"
 #include "color.h"
-#include "config.h"
 #include "ctx.h"
 #include "diag.h"
 #include "dir.h"
diff --git a/src/prelude.h b/src/prelude.h
new file mode 100644
index 0000000..c3a0752
--- /dev/null
+++ b/src/prelude.h
@@ -0,0 +1,377 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+/**
+ * Configuration and feature/platform detection.
+ */
+
+#ifndef BFS_PRELUDE_H
+#define BFS_PRELUDE_H
+
+// Possible __STDC_VERSION__ values
+
+#define C95 199409L
+#define C99 199901L
+#define C11 201112L
+#define C17 201710L
+#define C23 202311L
+
+#include <stddef.h>
+
+#if __STDC_VERSION__ < C23
+#  include <stdalign.h>
+#  include <stdbool.h>
+#  include <stdnoreturn.h>
+#endif
+
+// bfs packaging configuration
+
+#ifndef BFS_COMMAND
+#  define BFS_COMMAND "bfs"
+#endif
+#ifndef BFS_HOMEPAGE
+#  define BFS_HOMEPAGE "https://tavianator.com/projects/bfs.html"
+#endif
+
+// This is a symbol instead of a literal so we don't have to rebuild everything
+// when the version number changes
+extern const char bfs_version[];
+
+// Check for system headers
+
+#ifdef __has_include
+
+#if __has_include(<mntent.h>)
+#  define BFS_HAS_MNTENT_H true
+#endif
+#if __has_include(<paths.h>)
+#  define BFS_HAS_PATHS_H true
+#endif
+#if __has_include(<sys/acl.h>)
+#  define BFS_HAS_SYS_ACL_H true
+#endif
+#if __has_include(<sys/capability.h>)
+#  define BFS_HAS_SYS_CAPABILITY_H true
+#endif
+#if __has_include(<sys/extattr.h>)
+#  define BFS_HAS_SYS_EXTATTR_H true
+#endif
+#if __has_include(<sys/mkdev.h>)
+#  define BFS_HAS_SYS_MKDEV_H true
+#endif
+#if __has_include(<sys/param.h>)
+#  define BFS_HAS_SYS_PARAM_H true
+#endif
+#if __has_include(<sys/sysmacros.h>)
+#  define BFS_HAS_SYS_SYSMACROS_H true
+#endif
+#if __has_include(<sys/xattr.h>)
+#  define BFS_HAS_SYS_XATTR_H true
+#endif
+#if __has_include(<threads.h>)
+#  define BFS_HAS_THREADS_H true
+#endif
+#if __has_include(<util.h>)
+#  define BFS_HAS_UTIL_H true
+#endif
+
+#else // !__has_include
+
+#define BFS_HAS_MNTENT_H __GLIBC__
+#define BFS_HAS_PATHS_H true
+#define BFS_HAS_SYS_ACL_H true
+#define BFS_HAS_SYS_CAPABILITY_H __linux__
+#define BFS_HAS_SYS_EXTATTR_H __FreeBSD__
+#define BFS_HAS_SYS_MKDEV_H false
+#define BFS_HAS_SYS_PARAM_H true
+#define BFS_HAS_SYS_SYSMACROS_H __GLIBC__
+#define BFS_HAS_SYS_XATTR_H __linux__
+#define BFS_HAS_THREADS_H (!__STDC_NO_THREADS__)
+#define BFS_HAS_UTIL_H __NetBSD__
+
+#endif // !__has_include
+
+#ifndef BFS_USE_MNTENT_H
+#  define BFS_USE_MNTENT_H BFS_HAS_MNTENT_H
+#endif
+#ifndef BFS_USE_PATHS_H
+#  define BFS_USE_PATHS_H BFS_HAS_PATHS_H
+#endif
+#ifndef BFS_USE_SYS_ACL_H
+#  define BFS_USE_SYS_ACL_H (BFS_HAS_SYS_ACL_H && !__illumos__ && (!__linux__ || BFS_USE_LIBACL))
+#endif
+#ifndef BFS_USE_SYS_CAPABILITY_H
+#  define BFS_USE_SYS_CAPABILITY_H (BFS_HAS_SYS_CAPABILITY_H && !__FreeBSD__ && (!__linux__ || BFS_USE_LIBCAP))
+#endif
+#ifndef BFS_USE_SYS_EXTATTR_H
+#  define BFS_USE_SYS_EXTATTR_H (BFS_HAS_SYS_EXTATTR_H && !__DragonFly__)
+#endif
+#ifndef BFS_USE_SYS_MKDEV_H
+#  define BFS_USE_SYS_MKDEV_H BFS_HAS_SYS_MKDEV_H
+#endif
+#ifndef BFS_USE_SYS_PARAM_H
+#  define BFS_USE_SYS_PARAM_H BFS_HAS_SYS_PARAM_H
+#endif
+#ifndef BFS_USE_SYS_SYSMACROS_H
+#  define BFS_USE_SYS_SYSMACROS_H BFS_HAS_SYS_SYSMACROS_H
+#endif
+#ifndef BFS_USE_SYS_XATTR_H
+#  define BFS_USE_SYS_XATTR_H BFS_HAS_SYS_XATTR_H
+#endif
+#ifndef BFS_USE_THREADS_H
+#  define BFS_USE_THREADS_H BFS_HAS_THREADS_H
+#endif
+#ifndef BFS_USE_UTIL_H
+#  define BFS_USE_UTIL_H BFS_HAS_UTIL_H
+#endif
+
+// Stub out feature detection on old/incompatible compilers
+
+#ifndef __has_feature
+#  define __has_feature(feat) false
+#endif
+
+#ifndef __has_c_attribute
+#  define __has_c_attribute(attr) false
+#endif
+
+#ifndef __has_attribute
+#  define __has_attribute(attr) false
+#endif
+
+// Platform detection
+
+// Get the definition of BSD if available
+#if BFS_USE_SYS_PARAM_H
+#  include <sys/param.h>
+#endif
+
+#ifndef __GLIBC_PREREQ
+#  define __GLIBC_PREREQ(maj, min) false
+#endif
+
+#ifndef __NetBSD_Prereq__
+#  define __NetBSD_Prereq__(maj, min, patch) false
+#endif
+
+// Fundamental utilities
+
+/**
+ * Get the length of an array.
+ */
+#define countof(array) (sizeof(array) / sizeof(0[array]))
+
+/**
+ * False sharing/destructive interference/largest cache line size.
+ */
+#ifdef __GCC_DESTRUCTIVE_SIZE
+#  define FALSE_SHARING_SIZE __GCC_DESTRUCTIVE_SIZE
+#else
+#  define FALSE_SHARING_SIZE 64
+#endif
+
+/**
+ * True sharing/constructive interference/smallest cache line size.
+ */
+#ifdef __GCC_CONSTRUCTIVE_SIZE
+#  define TRUE_SHARING_SIZE __GCC_CONSTRUCTIVE_SIZE
+#else
+#  define TRUE_SHARING_SIZE 64
+#endif
+
+/**
+ * Alignment specifier that avoids false sharing.
+ */
+#define cache_align alignas(FALSE_SHARING_SIZE)
+
+#if __COSMOPOLITAN__
+typedef long double max_align_t;
+#endif
+
+// Wrappers for attributes
+
+/**
+ * Silence warnings about switch/case fall-throughs.
+ */
+#if __has_attribute(fallthrough)
+#  define fallthru __attribute__((fallthrough))
+#else
+#  define fallthru ((void)0)
+#endif
+
+/**
+ * Silence warnings about unused declarations.
+ */
+#if __has_attribute(unused)
+#  define attr_maybe_unused __attribute__((unused))
+#else
+#  define attr_maybe_unused
+#endif
+
+/**
+ * Warn if a value is unused.
+ */
+#if __has_attribute(warn_unused_result)
+#  define attr_nodiscard __attribute__((warn_unused_result))
+#else
+#  define attr_nodiscard
+#endif
+
+/**
+ * Hint to avoid inlining a function.
+ */
+#if __has_attribute(noinline)
+#  define attr_noinline __attribute__((noinline))
+#else
+#  define attr_noinline
+#endif
+
+/**
+ * Hint that a function is unlikely to be called.
+ */
+#if __has_attribute(cold)
+#  define attr_cold attr_noinline __attribute__((cold))
+#else
+#  define attr_cold attr_noinline
+#endif
+
+/**
+ * Adds compiler warnings for bad printf()-style function calls, if supported.
+ */
+#if __has_attribute(format)
+#  define attr_printf(fmt, args) __attribute__((format(printf, fmt, args)))
+#else
+#  define attr_printf(fmt, args)
+#endif
+
+/**
+ * Annotates allocator-like functions.
+ */
+#if __has_attribute(malloc)
+#  if __GNUC__ >= 11 && !__OPTIMIZE__ // malloc(deallocator) disables inlining on GCC
+#    define attr_malloc(...) attr_nodiscard __attribute__((malloc(__VA_ARGS__)))
+#  else
+#    define attr_malloc(...) attr_nodiscard __attribute__((malloc))
+#  endif
+#else
+#  define attr_malloc(...) attr_nodiscard
+#endif
+
+/**
+ * Specifies that a function returns allocations with a given alignment.
+ */
+#if __has_attribute(alloc_align)
+#  define attr_alloc_align(param) __attribute__((alloc_align(param)))
+#else
+#  define attr_alloc_align(param)
+#endif
+
+/**
+ * Specifies that a function returns allocations with a given size.
+ */
+#if __has_attribute(alloc_size)
+#  define attr_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
+#else
+#  define attr_alloc_size(...)
+#endif
+
+/**
+ * Shorthand for attr_alloc_align() and attr_alloc_size().
+ */
+#define attr_aligned_alloc(align, ...) \
+	attr_alloc_align(align) \
+	attr_alloc_size(__VA_ARGS__)
+
+/**
+ * Check if function multiversioning via GNU indirect functions (ifunc) is supported.
+ */
+#ifndef BFS_USE_TARGET_CLONES
+#  if __has_attribute(target_clones) && (__GLIBC__ || __FreeBSD__)
+#    define BFS_USE_TARGET_CLONES true
+#  endif
+#endif
+
+/**
+ * Apply the target_clones attribute, if available.
+ */
+#if BFS_USE_TARGET_CLONES
+#  define attr_target_clones(...) __attribute__((target_clones(__VA_ARGS__)))
+#else
+#  define attr_target_clones(...)
+#endif
+
+/**
+ * Shorthand for multiple attributes at once. attr(a, b(c), d) is equivalent to
+ *
+ *     attr_a
+ *     attr_b(c)
+ *     attr_d
+ */
+#define attr(...) \
+	attr__(attr_##__VA_ARGS__, none, none, none, none, none, none, none, none, none, )
+
+/**
+ * attr() helper.  For exposition, pretend we support only 2 args, instead of 9.
+ * There are a few cases:
+ *
+ *     attr()
+ *         => attr__(attr_, none, none)
+ *         => attr_                =>
+ *            attr_none            =>
+ *            attr_too_many_none() =>
+ *
+ *     attr(a)
+ *         => attr__(attr_a, none, none)
+ *         => attr_a               => __attribute__((a))
+ *            attr_none            =>
+ *            attr_too_many_none() =>
+ *
+ *     attr(a, b(c))
+ *         => attr__(attr_a, b(c), none, none)
+ *         => attr_a                   => __attribute__((a))
+ *            attr_b(c)                => __attribute__((b(c)))
+ *            attr_too_many_none(none) =>
+ *
+ *     attr(a, b(c), d)
+ *         => attr__(attr_a, b(c), d, none, none)
+ *         => attr_a                      => __attribute__((a))
+ *            attr_b(c)                   => __attribute__((b(c)))
+ *            attr_too_many_d(none, none) => error
+ *
+ * Some attribute names are the same as standard library functions, e.g. printf.
+ * Standard libraries are permitted to define these functions as macros, like
+ *
+ *     #define printf(...) __builtin_printf(__VA_ARGS__)
+ *
+ * The token paste in
+ *
+ *     #define attr(...) attr__(attr_##__VA_ARGS__, none, none)
+ *
+ * is necessary to prevent macro expansion before evaluating attr__().
+ * Otherwise, we could get
+ *
+ *     attr(printf(1, 2))
+ *         => attr__(__builtin_printf(1, 2), none, none)
+ *         => attr____builtin_printf(1, 2)
+ *         => error
+ */
+#define attr__(a1, a2, a3, a4, a5, a6, a7, a8, a9, none, ...) \
+	a1 \
+	attr_##a2 \
+	attr_##a3 \
+	attr_##a4 \
+	attr_##a5 \
+	attr_##a6 \
+	attr_##a7 \
+	attr_##a8 \
+	attr_##a9 \
+	attr_too_many_##none(__VA_ARGS__)
+
+// Ignore `attr_none` from expanding 1-9 argument attr(a1, a2, ...)
+#define attr_none
+// Ignore `attr_` from expanding 0-argument attr()
+#define attr_
+// Only trigger an error on more than 9 arguments
+#define attr_too_many_none(...)
+
+#endif // BFS_PRELUDE_H
diff --git a/src/printf.c b/src/printf.c
index 3b8269e..4df399b 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -1,12 +1,12 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "printf.h"
 #include "alloc.h"
 #include "bfstd.h"
 #include "bftw.h"
 #include "color.h"
-#include "config.h"
 #include "ctx.h"
 #include "diag.h"
 #include "dir.h"
diff --git a/src/pwcache.c b/src/pwcache.c
index 79437d8..af8c237 100644
--- a/src/pwcache.c
+++ b/src/pwcache.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "pwcache.h"
 #include "alloc.h"
-#include "config.h"
 #include "trie.h"
 #include <errno.h>
 #include <grp.h>
diff --git a/src/sanity.h b/src/sanity.h
index 423e6ff..e168b8f 100644
--- a/src/sanity.h
+++ b/src/sanity.h
@@ -8,7 +8,7 @@
 #ifndef BFS_SANITY_H
 #define BFS_SANITY_H
 
-#include "config.h"
+#include "prelude.h"
 #include <stddef.h>
 
 #if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
diff --git a/src/stat.c b/src/stat.c
index 2f2743b..eca5bab 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "stat.h"
 #include "atomic.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include "sanity.h"
 #include <errno.h>
diff --git a/src/stat.h b/src/stat.h
index 856a2ca..1fdd263 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -12,7 +12,7 @@
 #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>
diff --git a/src/thread.c b/src/thread.c
index 200d8c3..3793896 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "thread.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include <errno.h>
 #include <pthread.h>
diff --git a/src/thread.h b/src/thread.h
index 8174fe4..db11bd8 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -8,7 +8,7 @@
 #ifndef BFS_THREAD_H
 #define BFS_THREAD_H
 
-#include "config.h"
+#include "prelude.h"
 #include <pthread.h>
 
 #if __STDC_VERSION__ < C23 && !defined(thread_local)
diff --git a/src/trie.c b/src/trie.c
index f275064..808953e 100644
--- a/src/trie.c
+++ b/src/trie.c
@@ -81,10 +81,10 @@
  * and insert intermediate singleton "jump" nodes when necessary.
  */
 
+#include "prelude.h"
 #include "trie.h"
 #include "alloc.h"
 #include "bit.h"
-#include "config.h"
 #include "diag.h"
 #include "list.h"
 #include <stdint.h>
diff --git a/src/xregex.c b/src/xregex.c
index 3df27f0..c2711bc 100644
--- a/src/xregex.c
+++ b/src/xregex.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "xregex.h"
 #include "alloc.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include "sanity.h"
 #include "thread.h"
diff --git a/src/xspawn.c b/src/xspawn.c
index 347625d..113d7ec 100644
--- a/src/xspawn.c
+++ b/src/xspawn.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "xspawn.h"
 #include "alloc.h"
 #include "bfstd.h"
-#include "config.h"
 #include "list.h"
 #include <errno.h>
 #include <fcntl.h>
diff --git a/src/xspawn.h b/src/xspawn.h
index a20cbd0..6a8f54a 100644
--- a/src/xspawn.h
+++ b/src/xspawn.h
@@ -8,7 +8,7 @@
 #ifndef BFS_XSPAWN_H
 #define BFS_XSPAWN_H
 
-#include "config.h"
+#include "prelude.h"
 #include <sys/resource.h>
 #include <sys/types.h>
 #include <unistd.h>
diff --git a/src/xtime.c b/src/xtime.c
index bcf6dd3..91ed915 100644
--- a/src/xtime.c
+++ b/src/xtime.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "xtime.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include <errno.h>
 #include <limits.h>
diff --git a/tests/alloc.c b/tests/alloc.c
index 54b84ba..6c0defd 100644
--- a/tests/alloc.c
+++ b/tests/alloc.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "alloc.h"
-#include "config.h"
 #include "diag.h"
 #include <errno.h>
 #include <stdlib.h>
diff --git a/tests/bfstd.c b/tests/bfstd.c
index 5e408ca..07b68b0 100644
--- a/tests/bfstd.c
+++ b/tests/bfstd.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include <errno.h>
 #include <langinfo.h>
diff --git a/tests/bit.c b/tests/bit.c
index b444e50..674d1b2 100644
--- a/tests/bit.c
+++ b/tests/bit.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "bit.h"
-#include "config.h"
 #include "diag.h"
 #include <limits.h>
 #include <stdint.h>
diff --git a/tests/ioq.c b/tests/ioq.c
index a69f2bf..ef5ee3b 100644
--- a/tests/ioq.c
+++ b/tests/ioq.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "ioq.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include "dir.h"
 #include <errno.h>
diff --git a/tests/main.c b/tests/main.c
index 281c417..429772b 100644
--- a/tests/main.c
+++ b/tests/main.c
@@ -5,10 +5,10 @@
  * Entry point for unit tests.
  */
 
+#include "prelude.h"
 #include "tests.h"
 #include "bfstd.h"
 #include "color.h"
-#include "config.h"
 #include <errno.h>
 #include <locale.h>
 #include <stdio.h>
diff --git a/tests/tests.h b/tests/tests.h
index d61ffd7..9078938 100644
--- a/tests/tests.h
+++ b/tests/tests.h
@@ -8,7 +8,7 @@
 #ifndef BFS_TESTS_H
 #define BFS_TESTS_H
 
-#include "config.h"
+#include "prelude.h"
 #include "diag.h"
 
 /** Unit test function type. */
diff --git a/tests/trie.c b/tests/trie.c
index 2a6eb48..4667322 100644
--- a/tests/trie.c
+++ b/tests/trie.c
@@ -1,9 +1,9 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "trie.h"
-#include "config.h"
 #include "diag.h"
 #include <stdlib.h>
 #include <string.h>
diff --git a/tests/xspawn.c b/tests/xspawn.c
index fd8362e..7362aa5 100644
--- a/tests/xspawn.c
+++ b/tests/xspawn.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "alloc.h"
 #include "bfstd.h"
-#include "config.h"
 #include "dstring.h"
 #include "xspawn.h"
 #include <stdlib.h>
diff --git a/tests/xtime.c b/tests/xtime.c
index fd7aa0f..a7c63d2 100644
--- a/tests/xtime.c
+++ b/tests/xtime.c
@@ -1,10 +1,10 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "tests.h"
 #include "xtime.h"
 #include "bfstd.h"
-#include "config.h"
 #include "diag.h"
 #include <errno.h>
 #include <limits.h>
diff --git a/tests/xtouch.c b/tests/xtouch.c
index b1daec7..82d749d 100644
--- a/tests/xtouch.c
+++ b/tests/xtouch.c
@@ -1,8 +1,8 @@
 // Copyright © Tavian Barnes <tavianator@tavianator.com>
 // SPDX-License-Identifier: 0BSD
 
+#include "prelude.h"
 #include "bfstd.h"
-#include "config.h"
 #include "sanity.h"
 #include "xtime.h"
 #include <errno.h>
-- 
cgit v1.2.3


From d7130b3eee3e59f2e5475bbac5695cee54310c20 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Thu, 18 Apr 2024 17:30:08 -0400
Subject: config: Check for statx()

---
 config/header.mk       |  4 +++-
 config/statx-syscall.c | 13 +++++++++++++
 config/statx.c         | 11 +++++++++++
 src/stat.c             |  4 ++--
 src/stat.h             |  8 ++------
 5 files changed, 31 insertions(+), 9 deletions(-)
 create mode 100644 config/statx-syscall.c
 create mode 100644 config/statx.c

(limited to 'src/stat.h')

diff --git a/config/header.mk b/config/header.mk
index 20cb7ae..ec53dfa 100644
--- a/config/header.mk
+++ b/config/header.mk
@@ -17,7 +17,9 @@ HEADERS := \
     ${GEN}/getprogname.h \
     ${GEN}/getprogname-gnu.h \
     ${GEN}/posix-spawn-addfchdir.h \
-    ${GEN}/posix-spawn-addfchdir-np.h
+    ${GEN}/posix-spawn-addfchdir-np.h \
+    ${GEN}/statx.h \
+    ${GEN}/statx-syscall.h
 
 ${GEN}/config.h: ${HEADERS}
 	${MSG} "[ GEN] ${TGT}"
diff --git a/config/statx-syscall.c b/config/statx-syscall.c
new file mode 100644
index 0000000..87ec869
--- /dev/null
+++ b/config/statx-syscall.c
@@ -0,0 +1,13 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+#include <fcntl.h>
+#include <linux/stat.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+int main(void) {
+	struct statx sb;
+	syscall(SYS_statx, AT_FDCWD, ".", 0, STATX_BASIC_STATS, &sb);
+	return 0;
+}
diff --git a/config/statx.c b/config/statx.c
new file mode 100644
index 0000000..65f1674
--- /dev/null
+++ b/config/statx.c
@@ -0,0 +1,11 @@
+// Copyright © Tavian Barnes <tavianator@tavianator.com>
+// SPDX-License-Identifier: 0BSD
+
+#include <fcntl.h>
+#include <sys/stat.h>
+
+int main(void) {
+	struct statx sb;
+	statx(AT_FDCWD, ".", 0, STATX_BASIC_STATS, &sb);
+	return 0;
+}
diff --git a/src/stat.c b/src/stat.c
index eca5bab..e525f24 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -13,7 +13,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
-#if BFS_USE_STATX && !BFS_HAS_LIBC_STATX
+#if BFS_USE_STATX && !BFS_HAS_STATX
 #  include <linux/stat.h>
 #  include <sys/syscall.h>
 #  include <unistd.h>
@@ -137,7 +137,7 @@ static int bfs_stat_impl(int at_fd, const char *at_path, int at_flags, struct bf
  * Wrapper for the statx() system call, which had no glibc wrapper prior to 2.28.
  */
 static int bfs_statx(int at_fd, const char *at_path, int at_flags, unsigned int mask, struct statx *buf) {
-#if BFS_HAS_LIBC_STATX
+#if BFS_HAS_STATX
 	int ret = statx(at_fd, at_path, at_flags, mask, buf);
 #else
 	int ret = syscall(SYS_statx, at_fd, at_path, at_flags, mask, buf);
diff --git a/src/stat.h b/src/stat.h
index 1fdd263..8d7144d 100644
--- a/src/stat.h
+++ b/src/stat.h
@@ -17,16 +17,12 @@
 #include <sys/types.h>
 #include <time.h>
 
-#if defined(STATX_BASIC_STATS) && (!__ANDROID__ || __ANDROID_API__ >= 30)
-#  define BFS_HAS_LIBC_STATX true
-#elif __linux__
+#if !BFS_HAS_STATX && BFS_HAS_STATX_SYSCALL
 #  include <linux/stat.h>
 #endif
 
 #ifndef BFS_USE_STATX
-#  ifdef STATX_BASIC_STATS
-#    define BFS_USE_STATX true
-#  endif
+#  define BFS_USE_STATX (BFS_HAS_STATX || BFS_HAS_STATX_SYSCALL)
 #endif
 
 #if BFS_USE_SYS_PARAM_H
-- 
cgit v1.2.3