Cleanup: move all the compatibillity fluff to a dedicated "libcompat"

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 124 insertions, 0 deletions

diff --git a/include/compat.h b/include/compat.h
new file mode 100644
index 0000000..fae9d92
--- /dev/null
+++ b/include/compat.h
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/*
+ * util.h
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef COMPAT_H
+#define COMPAT_H
+
+#if defined(__APPLE__)
+#include <libkern/OSByteOrder.h>
+
+#define htole16(x) OSSwapHostToLittleInt16(x)
+#define htole32(x) OSSwapHostToLittleInt32(x)
+#define htole64(x) OSSwapHostToLittleInt64(x)
+
+#define le32toh(x) OSSwapLittleToHostInt32(x)
+#define le16toh(x) OSSwapLittleToHostInt16(x)
+#define le64toh(x) OSSwapLittleToHostInt64(x)
+#elif defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/endian.h>
+#elif defined(_WIN32) || defined(__WINDOWS__)
+#define htole16(x) (x)
+#define htole32(x) (x)
+#define htole64(x) (x)
+
+#define le16toh(x) (x)
+#define le32toh(x) (x)
+#define le64toh(x) (x)
+#else
+#include <endian.h>
+#endif
+
+#if defined(_WIN32) || defined(__WINDOWS__)
+#include "sqfs/inode.h"
+
+#define S_IFSOCK SQFS_INODE_MODE_SOCK
+#define S_IFLNK SQFS_INODE_MODE_LNK
+#define S_IFREG SQFS_INODE_MODE_REG
+#define S_IFBLK SQFS_INODE_MODE_BLK
+#define S_IFDIR SQFS_INODE_MODE_DIR
+#define S_IFCHR SQFS_INODE_MODE_CHR
+#define S_IFIFO SQFS_INODE_MODE_FIFO
+#define S_IFMT SQFS_INODE_MODE_MASK
+
+#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
+#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
+#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
+#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
+#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
+
+#define S_ISUID SQFS_INODE_SET_UID
+#define S_ISGID SQFS_INODE_SET_GID
+#define S_ISVTX SQFS_INODE_STICKY
+
+#define S_IRWXU SQFS_INODE_OWNER_MASK
+#define S_IRUSR SQFS_INODE_OWNER_R
+#define S_IWUSR SQFS_INODE_OWNER_W
+#define S_IXUSR SQFS_INODE_OWNER_X
+
+#define S_IRWXG SQFS_INODE_GROUP_MASK
+#define S_IRGRP SQFS_INODE_GROUP_R
+#define S_IWGRP SQFS_INODE_GROUP_W
+#define S_IXGRP SQFS_INODE_GROUP_X
+
+#define S_IRWXO SQFS_INODE_OTHERS_MASK
+#define S_IROTH SQFS_INODE_OTHERS_R
+#define S_IWOTH SQFS_INODE_OTHERS_W
+#define S_IXOTH SQFS_INODE_OTHERS_X
+
+struct stat {
+	sqfs_u32 st_dev;
+	sqfs_u32 st_ino;
+	sqfs_u16 st_mode;
+	sqfs_u16 st_nlink;
+	sqfs_u32 st_uid;
+	sqfs_u32 st_gid;
+	sqfs_u32 st_rdev;
+	sqfs_u64 st_size;
+	sqfs_u32 st_blksize;
+	sqfs_u32 st_blocks;
+	sqfs_u64 st_atime;
+	sqfs_u64 st_mtime;
+	sqfs_u64 st_ctime;
+};
+
+/* lifted from musl libc */
+#define major(x) \
+	((unsigned)( (((x)>>31>>1) & 0xfffff000) | (((x)>>8) & 0x00000fff) ))
+
+#define minor(x)							\
+	((unsigned)( (((x)>>12) & 0xffffff00) | ((x) & 0x000000ff) ))
+
+#define makedev(x,y) ( \
+        (((x)&0xfffff000ULL) << 32) | \
+	(((x)&0x00000fffULL) << 8) | \
+        (((y)&0xffffff00ULL) << 12) | \
+	(((y)&0x000000ffULL)) )
+#else
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef __linux__
+#include <sys/sysmacros.h>
+#endif
+#endif
+
+#ifndef HAVE_GETLINE
+#include <stdio.h>
+
+ssize_t getline(char **line, size_t *n, FILE *fp);
+#endif
+
+#ifndef HAVE_STRNDUP
+char *strndup(const char *str, size_t max_len);
+#endif
+
+#ifndef HAVE_GETSUBOPT
+int getsubopt(char **opt, char *const *keys, char **val);
+#endif
+
+#endif /* COMPAT_H */