13 files changed, 100 insertions, 0 deletions
diff --git a/src/user/lib/include/ctype.h b/src/user/lib/include/ctype.h
index 4b15b1d..cbba529 100644
--- a/src/user/lib/include/ctype.h
+++ b/src/user/lib/include/ctype.h
@@ -6,3 +6,6 @@ int isdigit(int c);
 int islower(int c);
 int isspace(int c);
 int isupper(int c);
+
+int tolower(int c);
+int toupper(int c);
diff --git a/src/user/lib/include/err.h b/src/user/lib/include/err.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/user/lib/include/err.h
diff --git a/src/user/lib/include/limits.h b/src/user/lib/include/limits.h
new file mode 100644
index 0000000..065f8e0
--- /dev/null
+++ b/src/user/lib/include/limits.h
@@ -0,0 +1,5 @@
+#pragma once
+#include_next <limits.h>
+#include <camellia/path.h> // just for PATH_MAX
+
+#define _POSIX2_RE_DUP_MAX 255
diff --git a/src/user/lib/include/pwd.h b/src/user/lib/include/pwd.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/user/lib/include/pwd.h
diff --git a/src/user/lib/include/setjmp.h b/src/user/lib/include/setjmp.h
new file mode 100644
index 0000000..f90bae9
--- /dev/null
+++ b/src/user/lib/include/setjmp.h
@@ -0,0 +1,13 @@
+#pragma once
+#include <user/lib/panic.h>
+
+typedef char sigjmp_buf;
+static inline int sigsetjmp(sigjmp_buf env, int savemask) {
+	(void)env; (void)savemask;
+	return 0;
+}
+
+static inline void siglongjmp(sigjmp_buf env, int val) {
+	(void)env; (void)val;
+	__libc_panic("unimplemented");
+}
diff --git a/src/user/lib/include/signal.h b/src/user/lib/include/signal.h
new file mode 100644
index 0000000..c279beb
--- /dev/null
+++ b/src/user/lib/include/signal.h
@@ -0,0 +1,17 @@
+#pragma once
+#include <errno.h> // only for ENOSYS
+
+#define SIGHUP 0
+#define SIGINT 0
+#define SIGWINCH 0
+#define SIGQUIT 0
+#define SIG_IGN 0
+#define SIG_ERR 0
+
+typedef int sig_atomic_t;
+
+static inline int signal(int sig, void (*func)(int)) {
+	(void)sig; (void)func;
+	errno = ENOSYS;
+	return SIG_ERR;
+}
diff --git a/src/user/lib/include/stdio.h b/src/user/lib/include/stdio.h
index b0d34a7..5ad07e0 100644
--- a/src/user/lib/include/stdio.h
+++ b/src/user/lib/include/stdio.h
@@ -2,13 +2,20 @@
 #include <bits/file.h>
 #include <stdarg.h>
 #include <stddef.h>
+#include <sys/types.h>
 
 #define EOF (-1)
+#define STDIN_FILENO 0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
 
 #define SEEK_SET 1
 #define SEEK_CUR 2
 #define SEEK_END 3
 
+#define _IONBF 0
+#define _IOLBF 1
+
 /* stop fread() from trying to fill the entire buffer before returning
  * i.e. it will call _syscall_read() exactly once */
 #define FEXT_NOFILL 1
@@ -28,15 +35,35 @@ FILE *fopen(const char *path, const char *mode);
 FILE *freopen(const char *path, const char *mode, FILE *);
 FILE *fdopen(int fd, const char *mode);
 FILE *file_clone(const FILE *, const char *mode);
+FILE *popen(const char *cmd, const char *mode);
+int pclose(FILE *f);
+
 int fextflags(FILE *, int extflags);
+int setvbuf(FILE *restrict f, char *restrict buf, int type, size_t size);
 int fclose(FILE *);
 int fflush(FILE *f);
 
 size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict);
 size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict);
+int fputs(const char *s, FILE *f);
 char *fgets(char *buf, int size, FILE *f);
+int fgetc(FILE *f);
+int getc(FILE *f);
+int fputc(int c, FILE *f);
+int putc(int c, FILE *f);
+
 int fseek(FILE *f, long offset, int whence);
+int fseeko(FILE *f, off_t offset, int whence);
 long ftell(FILE *f);
+off_t ftello(FILE *f);
 
 int feof(FILE *);
 int ferror(FILE *);
+void clearerr(FILE *f);
+
+void perror(const char *s);
+int puts(const char *s);
+int getchar(void);
+int putchar(int c);
+
+off_t lseek(int fd, off_t off, int whence);
diff --git a/src/user/lib/include/stdlib.h b/src/user/lib/include/stdlib.h
index 7f6630d..e2e3996 100644
--- a/src/user/lib/include/stdlib.h
+++ b/src/user/lib/include/stdlib.h
@@ -1,8 +1,13 @@
 #pragma once
 #include <stddef.h>
+#include <stdlib.h>
 
 #ifndef NO_MALLOC_H
 #include <user/lib/vendor/dlmalloc/malloc.h>
 #endif
 
 _Noreturn void abort(void);
+
+int mkstemp(char *template);
+char *getenv(const char *name);
+int system(const char *cmd);
diff --git a/src/user/lib/include/string.h b/src/user/lib/include/string.h
index 5cddb61..7235da9 100644
--- a/src/user/lib/include/string.h
+++ b/src/user/lib/include/string.h
@@ -9,3 +9,5 @@ size_t strcspn(const char *s, const char *reject);
 
 char *strtok(char *restrict s, const char *restrict sep);
 char *strtok_r(char *restrict s, const char *restrict sep, char **restrict state);
+
+int strncmp(const char *s1, const char *s2, size_t n);
diff --git a/src/user/lib/include/sys/ioctl.h b/src/user/lib/include/sys/ioctl.h
new file mode 100644
index 0000000..708bc3f
--- /dev/null
+++ b/src/user/lib/include/sys/ioctl.h
@@ -0,0 +1,13 @@
+#pragma once
+#include <errno.h> // only for ENOSYS
+
+#define TIOCGWINSZ 0
+struct winsize {
+	int ws_row, ws_col;
+};
+
+static inline int ioctl(int fd, int req, ...) {
+	(void)fd; (void)req;
+	errno = ENOSYS;
+	return -1;
+}
diff --git a/src/user/lib/include/sys/stat.h b/src/user/lib/include/sys/stat.h
new file mode 100644
index 0000000..a954c9b
--- /dev/null
+++ b/src/user/lib/include/sys/stat.h
@@ -0,0 +1,11 @@
+#pragma once
+#include <errno.h> // only for ENOSYS
+
+#define S_ISFIFO(x) 0
+
+struct stat {};
+static inline int fstat(int fd, struct stat *sb) {
+	(void)fd; (void)sb;
+	errno = ENOSYS;
+	return -1;
+}
diff --git a/src/user/lib/include/sys/wait.h b/src/user/lib/include/sys/wait.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/user/lib/include/sys/wait.h
diff --git a/src/user/lib/include/unistd.h b/src/user/lib/include/unistd.h
index 9b368dc..1f0c002 100644
--- a/src/user/lib/include/unistd.h
+++ b/src/user/lib/include/unistd.h
@@ -5,6 +5,10 @@
 int fork(void);
 int close(handle_t h);
 _Noreturn void exit(int);
+_Noreturn void _exit(int);
+
+int unlink(const char *path);
+int isatty(int fd);
 
 int execv(const char *path, char *const argv[]);