2 files changed, 22 insertions, 0 deletions
diff --git a/lib/libc/include/ctype.h b/lib/libc/include/ctype.h
index 0ff9a43..2a827e3 100644
--- a/lib/libc/include/ctype.h
+++ b/lib/libc/include/ctype.h
@@ -36,6 +36,12 @@
 __BEGIN_DECLS
 
 __always_inline static inline int
+__isascii(int c)
+{
+    return c >= 0 && c <= 127;
+}
+
+__always_inline static inline int
 __tolower(int c)
 {
     return c | 0x20;
@@ -92,4 +98,7 @@ __END_DECLS
 /* Is a space? */
 #define isspace(C) __isspace((C))
 
+/* Is ascii? */
+#define isascii(C) __isascii((C))
+
 #endif  /* _CTYPE_H */
diff --git a/lib/libc/include/unistd.h b/lib/libc/include/unistd.h
index 21206ad..40ebee2 100644
--- a/lib/libc/include/unistd.h
+++ b/lib/libc/include/unistd.h
@@ -53,15 +53,28 @@ int sethostname(const char *name, size_t size);
 uid_t getuid(void);
 char *getlogin(void);
 
+char *getcwd(char *buf, size_t size);
+char *getwd(char *pathname);
+
+int symlink(const char *target, const char *linkpath);
+int synlinkat(const char *target, int newdirfd, const char *linkpath);
+
 ssize_t read(int fd, void *buf, size_t count);
 ssize_t write(int fd, const void *buf, size_t count);
 
 int close(int fd);
 int access(const char *path, int mode);
+
 off_t lseek(int fildes, off_t offset, int whence);
+int unlinkat(int dirfd, const char *pathname, int flags);
+int unlink(const char *path);
+
+int dup(int fd);
+int dup2(int fd, int fd1);
 
 pid_t getpid(void);
 pid_t getppid(void);
+pid_t fork(void);
 
 extern char *optarg;
 extern int optind, opterr, optopt;