Base library for tools and sed utility

1 files changed, 108 insertions, 0 deletions

diff --git a/tools/common.h b/tools/common.h
new file mode 100644
index 0000000..43e2dda
--- /dev/null
+++ b/tools/common.h
@@ -0,0 +1,108 @@
+#ifndef COMMON_H
+#define COMMON_H
+
+#include <bits/errno.h>
+
+#include <stdarg.h>
+
+#define NULL ((void *)0)
+#define _S(s) s, (sizeof(s) - 1)
+#define CSTR(s) ((struct str) { s, s + sizeof(s) - 1 })
+#define STR(s) ((struct str) { s, s + strzlen(s) })
+
+struct str {
+	char *start;
+	char *end;
+};
+
+extern int errno;
+extern char *progname;
+
+void exit(int code);
+int read(int fd, char *buf, int len);
+int write(int fd, char *buf, int len);
+
+#define O_RDONLY        0
+
+int open(char *fname, int flags, int mode);
+
+/*
+ * Taken from linux/arch/x86/include/uapi/asm/stat.h
+ * Matches arch/x86_64/bits/stat.h
+ */
+
+struct time {
+	unsigned long sec;
+	unsigned long usec;
+};
+
+struct stat {
+	unsigned long dev;
+	unsigned long ino;
+	unsigned long nlink;
+
+	unsigned int mode;
+	unsigned int uid;
+	unsigned int gid;
+	unsigned int __pad0;
+
+	unsigned long rdev;
+	unsigned long size;
+	unsigned long blksize;
+	unsigned long blocks;
+
+	struct time atime;
+	struct time mtime;
+	struct time ctime;
+	long __unused[3];
+};
+
+int stat(char *fname, struct stat *st);
+int fstat(int fd, struct stat *st);
+
+int close(int fd);
+
+#define MAP_PRIVATE    0x02
+#define MAP_ANON       0x20
+
+#define PROT_NONE      0
+#define PROT_READ      1
+#define PROT_WRITE     2
+#define PROT_EXEC      4
+
+void *mmap(char *addr, unsigned long length, int prot, int flags, int fd,
+		unsigned long offset);
+int munmap(char *addr, int length);
+
+#define MREMAP_MAYMOVE 1
+
+int mremap(void *old_addr, unsigned long old_size, unsigned long new_size,
+		int flags, void *new_addr);
+
+void hexit(int code);
+
+extern struct iobuf stdout;
+extern struct iobuf stderr;
+
+void print_strz(struct iobuf *buf, char *s);
+void print_str(struct iobuf *buf, struct str *s);
+
+void printf(char *fmt, ...);
+void eprintf(char *fmt, ...);
+void evprintf(char *fmt, va_list vl);
+
+void save_heap_offset();
+void restore_heap_offset();
+void *malloc(int size);
+
+int strzlen(char *s);
+int strzeq(char *s1, char *s2);
+
+int streq(struct str *s1, struct str *s2);
+void perror(char *s);
+void syscall_error(char *fname);
+
+void memmove(char *dest, char *src, int len);
+void memcpy(void *dest, void *src, int len);
+void memset(void *dest, char c, int len);
+#endif