Stub out a bunch more functions to get closer to that sweet bash build.

Kernel/Process.cpp

@@ -1042,6 +1042,16 @@ int Process::sys$access(const char* pathname, int mode)
     ASSERT_NOT_REACHED();
 }
 
+int Process::sys$fcntl(int fd, int cmd, dword extra_arg)
+{
+    (void) cmd;
+    (void) extra_arg;
+    auto* descriptor = file_descriptor(fd);
+    if (!descriptor)
+        return -EBADF;
+    ASSERT_NOT_REACHED();
+}
+
 int Process::sys$fstat(int fd, Unix::stat* statbuf)
 {
     VALIDATE_USER_WRITE(statbuf, sizeof(Unix::stat));
@@ -1453,6 +1463,29 @@ int Process::sys$setpgid(pid_t specified_pid, pid_t specified_pgid)
     return 0;
 }
 
+int Process::sys$tcgetattr(int fd, Unix::termios* tp)
+{
+    VALIDATE_USER_WRITE(tp, sizeof(Unix::termios));
+    auto* descriptor = file_descriptor(fd);
+    if (!descriptor)
+        return -EBADF;
+    if (!descriptor->isTTY())
+        return -ENOTTY;
+    ASSERT_NOT_REACHED();
+}
+
+int Process::sys$tcsetattr(int fd, int optional_actions, const Unix::termios* tp)
+{
+    (void) optional_actions;
+    VALIDATE_USER_READ(tp, sizeof(Unix::termios));
+    auto* descriptor = file_descriptor(fd);
+    if (!descriptor)
+        return -EBADF;
+    if (!descriptor->isTTY())
+        return -ENOTTY;
+    ASSERT_NOT_REACHED();
+}
+
 pid_t Process::sys$tcgetpgrp(int fd)
 {
     auto* descriptor = file_descriptor(fd);

Kernel/Process.h

@@ -170,6 +170,9 @@ public:
     int sys$setuid(uid_t);
     unsigned sys$alarm(unsigned seconds);
     int sys$access(const char* pathname, int mode);
+    int sys$fcntl(int fd, int cmd, dword extra_arg);
+    int sys$tcgetattr(int fd, Unix::termios*);
+    int sys$tcsetattr(int fd, int optional_actions, const Unix::termios*);
 
     static void initialize();
 

Kernel/Syscall.cpp

@@ -173,6 +173,12 @@ static DWORD handle(RegisterDump& regs, DWORD function, DWORD arg1, DWORD arg2,
         return current->sys$alarm((unsigned)arg1);
     case Syscall::SC_access:
         return current->sys$access((const char*)arg1, (int)arg2);
+    case Syscall::SC_fcntl:
+        return current->sys$fcntl((int)arg1, (int)arg2, (dword)arg3);
+    case Syscall::SC_tcgetattr:
+        return current->sys$tcgetattr((int)arg1, (Unix::termios*)arg2);
+    case Syscall::SC_tcsetattr:
+        return current->sys$tcsetattr((int)arg1, (int)arg2, (const Unix::termios*)arg3);
     default:
         kprintf("<%u> int0x80: Unknown function %x requested {%x, %x, %x}\n", current->pid(), function, arg1, arg2, arg3);
         break;

Kernel/Syscall.h

@@ -63,6 +63,9 @@
     __ENUMERATE_SYSCALL(alarm) \
     __ENUMERATE_SYSCALL(fstat) \
     __ENUMERATE_SYSCALL(access) \
+    __ENUMERATE_SYSCALL(fcntl) \
+    __ENUMERATE_SYSCALL(tcsetattr) \
+    __ENUMERATE_SYSCALL(tcgetattr) \
 
 
 #define DO_SYSCALL_A0(function) Syscall::invoke((dword)(function))

LibC/Makefile

@@ -26,6 +26,8 @@ LIBC_OBJS = \
        stat.o \
        mntent.o \
        ctype.o \
+       fcntl.o \
+       termios.o \
        entry.o
 
 OBJS = $(AK_OBJS) $(LIBC_OBJS)

LibC/ctype.cpp

@@ -6,3 +6,8 @@ int ispunct(int c)
     const char* punctuation_characters = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~";
     return !!strchr(punctuation_characters, c);
 }
+
+int isprint(int c)
+{
+    return isdigit(c) || isupper(c) || islower(c) || ispunct(c) || isspace(c);
+}

LibC/ctype.h

@@ -44,5 +44,6 @@ ALWAYS_INLINE int isdigit(int c)
 }
 
 int ispunct(int c);
+int isprint(int c);
 
 __END_DECLS

LibC/fcntl.cpp

@@ -0,0 +1,17 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <Kernel/Syscall.h>
+
+extern "C" {
+
+int fcntl(int fd, int cmd, ...)
+{
+    va_list ap;
+    va_start(ap, cmd);
+    dword extra_arg = va_arg(ap, dword);
+    int rc = Syscall::invoke(Syscall::SC_fcntl, (dword)fd, (dword)cmd, extra_arg);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
+}
+
+}

LibC/fcntl.h

@@ -10,4 +10,6 @@ __BEGIN_DECLS
 #define F_GETFL 3
 #define F_SETFL 4
 
+int fcntl(int fd, int cmd, ...);
+
 __END_DECLS

LibC/termios.cpp

@@ -0,0 +1,20 @@
+#include <errno.h>
+#include <termios.h>
+#include <Kernel/Syscall.h>
+
+extern "C" {
+
+int tcgetattr(int fd, struct termios* t)
+{
+    int rc = Syscall::invoke(Syscall::SC_tcgetattr, (dword)fd, (dword)t);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
+}
+
+int tcsetattr(int fd, int optional_actions, const struct termios* t)
+{
+    int rc = Syscall::invoke(Syscall::SC_tcsetattr, (dword)fd, (dword)optional_actions, (dword)t);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
+}
+
+}
+

LibC/termios.h

@@ -5,7 +5,6 @@
 
 __BEGIN_DECLS
 
-
 #define NCCS 32
 
 typedef uint32_t tcflag_t;
@@ -19,6 +18,9 @@ struct termios {
     cc_t     c_cc[NCCS];
 };
 
+int tcgetattr(int fd, struct termios*);
+int tcsetattr(int fd, int optional_actions, const struct termios*);
+
 /* c_cc characters */
 #define VINTR 0
 #define VQUIT 1

LibC/time.cpp

@@ -21,4 +21,9 @@ int gettimeofday(struct timeval* tv, struct timezone*)
     __RETURN_WITH_ERRNO(rc, rc, -1);
 }
 
+char* ctime(const time_t*)
+{
+    return const_cast<char*>("ctime() not implemented");
+}
+
 }

LibC/time.h

@@ -12,6 +12,7 @@ struct timezone {
 
 int gettimeofday(struct timeval*, struct timezone* tz);
 time_t time(time_t*);
+char* ctime(const time_t*);
 
 __END_DECLS
 

VirtualFileSystem/UnixTypes.h

@@ -67,6 +67,19 @@ typedef dword blkcnt_t;
 typedef dword size_t;
 typedef signed_dword ssize_t;
 
+#define NCCS 32
+
+typedef uint32_t tcflag_t;
+typedef uint8_t cc_t;
+
+struct termios {
+    tcflag_t c_iflag;
+    tcflag_t c_oflag;
+    tcflag_t c_cflag;
+    tcflag_t c_lflag;
+    cc_t     c_cc[NCCS];
+};
+
 struct stat {
     dev_t     st_dev;     /* ID of device containing file */
     ino_t     st_ino;     /* inode number */