feat(userspace/libc): implement functions for porting apps

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Userspace/libc/abis/fennix/generic/bits/socket.h

@@ -31,4 +31,8 @@ struct sockaddr
 	char sa_data[14];
 };
 
+#ifdef _GNU_SOURCE
+#define SO_PEERCRED 0x1029
+#endif
+
 #endif // _BITS_SOCKET_H

Userspace/libc/abis/fennix/generic/bits/syscalls.h

@@ -1807,7 +1807,7 @@ typedef enum
 /* Time */
 
 /** @copydoc SYS_TIME */
-#define call_time(t) syscall1(SYS_TIME, t)
+#define call_time(t) syscall1(SYS_TIME, (scarg)t)
 
 /** @copydoc SYS_CLOCK_GETTIME */
 #define call_clock_gettime(clockid, tp) syscall2(SYS_CLOCK_GETTIME, (scarg)clockid, (scarg)tp)

Userspace/libc/include/bits/libc.h

@@ -70,5 +70,10 @@ int sysdep(ChangeDirectory)(const char *Pathname);
 char *sysdep(GetWorkingDirectory)(char *Buffer, size_t Size);
 int sysdep(Brk)(void *Address);
 int sysdep(FileControl)(int Descriptor, int Command, void *Arg);
+int sysdep(ClockGetTime)(clockid_t ClockID, struct timespec *TP);
+time_t sysdep(Time)(void);
+clock_t sysdep(Clock)(void);
+int sysdep(RemoveDirectory)(const char *Pathname);
+int sysdep(Unlink)(const char *Pathname);
 
 #endif // FENNIX_BITS_LIBC_H

Userspace/libc/include/iconv.h

@@ -0,0 +1,29 @@
+/*
+	This file is part of Fennix C Library.
+
+	Fennix C Library is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix C Library is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef _ICONV_H
+#define _ICONV_H
+
+#include <stddef.h>
+
+typedef void *iconv_t;
+
+iconv_t iconv_open(const char *tocode, const char *fromcode);
+size_t iconv(iconv_t cd, char **restrict inbuf, size_t *restrict inbytesleft, char **restrict outbuf, size_t *restrict outbytesleft);
+int iconv_close(iconv_t cd);
+
+#endif // _ICONV_H

Userspace/libc/include/stddef.h

@@ -27,6 +27,8 @@ extern "C"
 #define NULL ((void *)0)
 #endif
 
+#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER)
+
 	typedef struct
 	{
 		long long __a;

Userspace/libc/include/stdio.h

@@ -106,7 +106,7 @@ extern "C"
 	int fputs(const char *restrict s, FILE *restrict stream);
 	size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream);
 	FILE *freopen(const char *restrict, const char *restrict, FILE *restrict);
-	int fscanf(FILE *restrict, const char *restrict, ...);
+	int fscanf(FILE *restrict stream, const char *restrict format, ...);
 	int fseek(FILE *stream, long offset, int whence);
 	int fseeko(FILE *, off_t, int);
 	int fsetpos(FILE *, const fpos_t *);
@@ -131,16 +131,16 @@ extern "C"
 	int putc_unlocked(int c, FILE *stream);
 	int putchar_unlocked(int c);
 	int puts(const char *s);
-	int remove(const char *);
+	int remove(const char *path);
 	int rename(const char *, const char *);
 	int renameat(int, const char *, int, const char *);
 	void rewind(FILE *);
-	int scanf(const char *restrict, ...);
+	int scanf(const char *restrict format, ...);
 	void setbuf(FILE *restrict, char *restrict);
 	int setvbuf(FILE *restrict, char *restrict, int, size_t);
 	int snprintf(char *restrict s, size_t n, const char *restrict format, ...);
 	int sprintf(char *restrict s, const char *restrict format, ...);
-	int sscanf(const char *restrict, const char *restrict, ...);
+	int sscanf(const char *restrict s, const char *restrict format, ...);
 	FILE *tmpfile(void);
 	char *tmpnam(char *);
 	int ungetc(int, FILE *);
@@ -149,7 +149,7 @@ extern "C"
 	int vfscanf(FILE *restrict, const char *restrict, va_list);
 	int vprintf(const char *restrict, va_list);
 	int vscanf(const char *restrict, va_list);
-	int vsnprintf(char *restrict, size_t, const char *restrict, va_list);
+	int vsnprintf(char *restrict s, size_t n, const char *restrict format, va_list ap);
 	int vsprintf(char *restrict, const char *restrict, va_list);
 	int vsscanf(const char *restrict, const char *restrict, va_list);
 

Userspace/libc/include/stdlib.h

@@ -102,7 +102,8 @@ extern "C"
 	double strtod(const char *, char **);
 	long strtol(const char *restrict nptr, char **restrict endptr, int base);
 	long long strtoll(const char *restrict nptr, char **restrict endptr, int base);
-	unsigned long int strtoul(const char *, char **, int);
+	unsigned long int strtoul(const char *restrict str, char **restrict endptr, int base);
+	unsigned long long strtoull(const char *restrict str, char **restrict endptr, int base);
 	int system(const char *command);
 	int ttyslot(void);
 	int unlockpt(int);

Userspace/libc/include/sys/select.h

@@ -0,0 +1,41 @@
+/*
+	This file is part of Fennix C Library.
+
+	Fennix C Library is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix C Library is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SYS_SELECT_H
+#define _SYS_SELECT_H
+
+#include <sys/types.h>
+#include <signal.h>
+#include <time.h>
+#include <sys/time.h>
+
+#define FD_SETSIZE 1024
+
+typedef struct
+{
+	unsigned long fds_bits[(FD_SETSIZE + (8 * sizeof(unsigned long) - 1)) / (8 * sizeof(unsigned long))];
+} fd_set;
+
+#define FD_CLR(fd, fdset) ((fdset)->fds_bits[(fd) / (8 * sizeof(unsigned long))] &= ~(1UL << ((fd) % (8 * sizeof(unsigned long)))))
+#define FD_ISSET(fd, fdset) (((fdset)->fds_bits[(fd) / (8 * sizeof(unsigned long))] & (1UL << ((fd) % (8 * sizeof(unsigned long))))) != 0)
+#define FD_SET(fd, fdset) ((fdset)->fds_bits[(fd) / (8 * sizeof(unsigned long))] |= (1UL << ((fd) % (8 * sizeof(unsigned long)))))
+#define FD_ZERO(fdset) (memset((fdset), 0, sizeof(fd_set)))
+
+int select(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict exceptfds, struct timeval *restrict timeout);
+int pselect(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict exceptfds, const struct timespec *restrict timeout, const sigset_t *restrict sigmask);
+
+#endif // _SYS_SELECT_H

Userspace/libc/include/sys/time.h

@@ -0,0 +1,51 @@
+/*
+	This file is part of Fennix C Library.
+
+	Fennix C Library is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix C Library is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SYS_TIME_H
+#define _SYS_TIME_H
+
+#include <bits/libc.h>
+#include <sys/types.h>
+#include <sys/select.h>
+
+typedef long time_t;
+typedef long suseconds_t;
+
+struct timeval
+{
+	time_t tv_sec;		 /* Seconds */
+	suseconds_t tv_usec; /* Microseconds */
+};
+
+struct itimerval
+{
+	struct timeval it_interval; /* Timer interval */
+	struct timeval it_value;	/* Current value */
+};
+
+/* Values for the which argument of getitimer() and setitimer() */
+#define ITIMER_REAL 0
+#define ITIMER_VIRTUAL 1
+#define ITIMER_PROF 2
+
+int getitimer(int which, struct itimerval *value);
+int gettimeofday(struct timeval *restrict tp, void *restrict tzp);
+// int select(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict exceptfds, struct timeval *restrict timeout);
+int setitimer(int which, const struct itimerval *restrict new_value, struct itimerval *restrict old_value);
+int utimes(const char *filename, const struct timeval times[2]);
+
+#endif // _SYS_TIME_H

Userspace/libc/include/sys/un.h

@@ -0,0 +1,31 @@
+/*
+	This file is part of Fennix C Library.
+
+	Fennix C Library is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix C Library is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SYS_UN_H
+#define _SYS_UN_H
+
+#include <sys/socket.h>
+
+#define SUN_PATH_SIZE 108
+
+struct sockaddr_un
+{
+	sa_family_t sun_family;		  /* Address family */
+	char sun_path[SUN_PATH_SIZE]; /* Socket pathname storage */
+};
+
+#endif // _SYS_UN_H

Userspace/libc/include/time.h

@@ -49,7 +49,7 @@ extern "C"
 		struct timespec it_value;	 /* Timer expiration. */
 	} itimerspec;
 
-#define CLOCKS_PER_SEC
+#define CLOCKS_PER_SEC 1000000
 #define TIME_UTC
 #define CLOCK_MONOTONIC __SYS_CLOCK_MONOTONIC
 #define CLOCK_PROCESS_CPUTIME_ID __SYS_CLOCK_PROCESS_CPUTIME_ID
@@ -64,10 +64,10 @@ extern "C"
 	char *asctime(const struct tm *);
 	clock_t clock(void);
 	int clock_getcpuclockid(pid_t, clockid_t *);
-	int clock_getres(clockid_t, struct timespec *);
+	int clock_getres(clockid_t clock_id, struct timespec *res);
-	int clock_gettime(clockid_t, struct timespec *);
+	int clock_gettime(clockid_t clock_id, struct timespec *tp);
 	int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *);
-	int clock_settime(clockid_t, const struct timespec *);
+	int clock_settime(clockid_t clock_id, const struct timespec *tp);
 	char *ctime(const time_t *);
 	double difftime(time_t, time_t);
 	struct tm *getdate(const char *);
@@ -81,7 +81,7 @@ extern "C"
 	size_t strftime(char *restrict, size_t, const char *restrict, const struct tm *restrict);
 	size_t strftime_l(char *restrict, size_t, const char *restrict, const struct tm *restrict, locale_t);
 	char *strptime(const char *restrict, const char *restrict, struct tm *restrict);
-	time_t time(time_t *);
+	time_t time(time_t *tloc);
 	int timer_create(clockid_t, struct sigevent *restrict, timer_t *restrict);
 	int timer_delete(timer_t);
 	int timer_getoverrun(timer_t);

Userspace/libc/include/unistd.h

@@ -121,7 +121,7 @@ extern "C"
 	ssize_t pwrite(int fildes, const void *buf, size_t nbyte, off_t offset);
 	ssize_t read(int fildes, void *buf, size_t nbyte);
 	int readlink(const char *, char *, size_t);
-	int rmdir(const char *);
+	int rmdir(const char *path);
 	void *sbrk(intptr_t incr);
 	int setgid(gid_t);
 	int setpgid(pid_t, pid_t);
@@ -141,7 +141,7 @@ extern "C"
 	char *ttyname(int);
 	int ttyname_r(int, char *, size_t);
 	useconds_t ualarm(useconds_t, useconds_t);
-	int unlink(const char *);
+	int unlink(const char *path);
 	int usleep(useconds_t);
 	pid_t vfork(void);
 	ssize_t write(int fildes, const void *buf, size_t nbyte);

Userspace/libc/libs/CMakeLists.txt

@@ -2,4 +2,6 @@ cmake_minimum_required(VERSION 3.10)
 project(FennixStandardLibraries)
 
 add_subdirectory(libm)
+add_subdirectory(librt)
+add_subdirectory(libpthread)
 add_subdirectory(libstdc++)

Userspace/libc/libs/libpthread/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+project(FennixRealTimeLibrary)
+
+set(SOURCES libpthread.c)
+
+add_library(pthread STATIC ${SOURCES})
+add_library(pthread_shared SHARED ${SOURCES})
+
+target_link_options(pthread_shared PRIVATE -nostdlib)
+set_target_properties(pthread_shared PROPERTIES OUTPUT_NAME "pthread")
+
+install(TARGETS pthread pthread_shared
+  ARCHIVE DESTINATION lib
+  LIBRARY DESTINATION lib
+  PUBLIC_HEADER DESTINATION include)

Userspace/libc/libs/libpthread/libpthread.c

@@ -0,0 +1,18 @@
+/*
+	This file is part of Fennix Userspace.
+
+	Fennix Userspace is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Userspace is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+/* dummy file */

Userspace/libc/libs/librt/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+project(FennixRealTimeLibrary)
+
+set(SOURCES librt.c)
+
+add_library(rt STATIC ${SOURCES})
+add_library(rt_shared SHARED ${SOURCES})
+
+target_link_options(rt_shared PRIVATE -nostdlib)
+set_target_properties(rt_shared PROPERTIES OUTPUT_NAME "rt")
+
+install(TARGETS rt rt_shared
+  ARCHIVE DESTINATION lib
+  LIBRARY DESTINATION lib
+  PUBLIC_HEADER DESTINATION include)

Userspace/libc/libs/librt/librt.c

@@ -0,0 +1,18 @@
+/*
+	This file is part of Fennix Userspace.
+
+	Fennix Userspace is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Userspace is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+/* dummy file */

Userspace/libc/src/std/stdio.c

@@ -19,6 +19,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <ctype.h>
 #include <bits/libc.h>
 #include <fcntl.h>
 #include "../print/printf.h"
@@ -466,7 +467,24 @@ export int puts(const char *s)
 	return 0;
 }
 
-export int remove(const char *);
+export int remove(const char *path)
+{
+	if (!path)
+	{
+		errno = EINVAL;
+		return -1;
+	}
+
+	struct stat path_stat;
+	if (sysdep(Stat)(path, &path_stat) < 0)
+		return -1;
+
+	if (S_ISDIR(path_stat.st_mode))
+		return sysdep(RemoveDirectory)(path);
+	else
+		return sysdep(Unlink)(path);
+}
+
 export int rename(const char *, const char *);
 export int renameat(int, const char *, int, const char *);
 export void rewind(FILE *);
@@ -492,7 +510,117 @@ export int sprintf(char *restrict s, const char *restrict format, ...)
 	return ret;
 }
 
-export int sscanf(const char *restrict, const char *restrict, ...);
+export int sscanf(const char *restrict s, const char *restrict format, ...)
+{
+	va_list args;
+	va_start(args, format);
+
+	const char *p = format;
+	int matchedItems = 0;
+
+	while (*p)
+	{
+		if (isspace(*p))
+		{
+			while (isspace(*p))
+				p++;
+			while (isspace(*s))
+				s++;
+		}
+		else if (*p == '%')
+		{
+			p++;
+			if (*p == '\0')
+				break;
+
+			int suppress_assignment = 0;
+			if (*p == '*')
+			{
+				suppress_assignment = 1;
+				p++;
+			}
+
+			int width = 0;
+			while (isdigit(*p))
+			{
+				width = width * 10 + (*p - '0');
+				p++;
+			}
+
+			char specifier = *p++;
+			if (specifier == '\0')
+				break;
+
+			if (specifier == 'd' || specifier == 'i')
+			{
+				int value = 0;
+				while (isdigit(*s) || (*s == '-' && value == 0))
+				{
+					if (*s == '-')
+					{
+						s++;
+						continue;
+					}
+					value = value * 10 + (*s - '0');
+					s++;
+				}
+				if (!suppress_assignment)
+				{
+					int *arg = va_arg(args, int *);
+					*arg = value;
+					matchedItems++;
+				}
+			}
+			else if (specifier == 's')
+			{
+				char *str = va_arg(args, char *);
+				while (*s && !isspace(*s) && (width == 0 || width-- > 0))
+				{
+					if (!suppress_assignment)
+						*str++ = *s;
+					s++;
+				}
+				if (!suppress_assignment)
+					*str = '\0';
+				matchedItems++;
+			}
+			else if (specifier == 'c')
+			{
+				char *ch = va_arg(args, char *);
+				if (*s && (width == 0 || width-- > 0))
+				{
+					if (!suppress_assignment)
+						*ch = *s;
+					s++;
+					matchedItems++;
+				}
+			}
+			else if (specifier == '%')
+			{
+				if (*s == '%')
+					s++;
+				else
+					break;
+			}
+			else
+				break;
+		}
+		else
+		{
+			if (*s == *p)
+			{
+				s++;
+				p++;
+			}
+			else
+				break;
+		}
+	}
+
+	va_end(args);
+	return matchedItems;
+}
+
 export FILE *tmpfile(void);
 export char *tmpnam(char *);
 export int ungetc(int, FILE *);
@@ -526,6 +654,14 @@ export int vfprintf(FILE *restrict stream, const char *restrict format, va_list
 export int vfscanf(FILE *restrict, const char *restrict, va_list);
 export int vprintf(const char *restrict, va_list);
 export int vscanf(const char *restrict, va_list);
-export int vsnprintf(char *restrict, size_t, const char *restrict, va_list);
+
+export int vsnprintf(char *restrict s, size_t n, const char *restrict format, va_list ap)
+{
+	int ret = vsnprintf_(s, n, format, ap);
+	if (ret < 0)
+		return ret;
+	return ret;
+}
+
 export int vsprintf(char *restrict, const char *restrict, va_list);
 export int vsscanf(const char *restrict, const char *restrict, va_list);

Userspace/libc/src/std/stdlib.c

@@ -334,7 +334,161 @@ export long long strtoll(const char *restrict nptr, char **restrict endptr, int
 	return acc;
 }
 
-export unsigned long int strtoul(const char *, char **, int);
+export unsigned long int strtoul(const char *restrict str, char **restrict endptr, int base)
+{
+	const char *s = str;
+	unsigned long acc = 0;
+	int c;
+	unsigned long cutoff;
+	int any, cutlim;
+
+	if (base < 0 || base == 1 || base > 36)
+	{
+		errno = EINVAL;
+		if (endptr)
+			*endptr = (char *)str;
+		return 0;
+	}
+
+	while (isspace((unsigned char)*s))
+		s++;
+
+	if (*s == '+')
+		s++;
+	else if (*s == '-')
+	{
+		errno = EINVAL;
+		if (endptr)
+			*endptr = (char *)str;
+		return 0;
+	}
+
+	if ((base == 0 || base == 16) && *s == '0' && (s[1] == 'x' || s[1] == 'X'))
+	{
+		s += 2;
+		base = 16;
+	}
+	else if (base == 0)
+		base = *s == '0' ? 8 : 10;
+
+	cutoff = ULONG_MAX / base;
+	cutlim = ULONG_MAX % base;
+
+	for (acc = 0, any = 0;; c = *s++)
+	{
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+
+		if (c >= base)
+			break;
+
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
+			any = -1;
+		else
+		{
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+
+	if (any < 0)
+	{
+		acc = ULONG_MAX;
+		errno = ERANGE;
+	}
+	else if (any == 0)
+	{
+		errno = EINVAL;
+	}
+
+	if (endptr)
+		*endptr = (char *)(any ? s - 1 : str);
+
+	return acc;
+}
+
+export unsigned long long strtoull(const char *restrict str, char **restrict endptr, int base)
+{
+	const char *s = str;
+	unsigned long long acc = 0;
+	int c;
+	unsigned long long cutoff;
+	int any, cutlim;
+
+	if (base < 0 || base == 1 || base > 36)
+	{
+		errno = EINVAL;
+		if (endptr)
+			*endptr = (char *)str;
+		return 0;
+	}
+
+	while (isspace((unsigned char)*s))
+		s++;
+
+	if (*s == '+')
+		s++;
+	else if (*s == '-')
+	{
+		errno = EINVAL;
+		if (endptr)
+			*endptr = (char *)str;
+		return 0;
+	}
+
+	if ((base == 0 || base == 16) && *s == '0' && (s[1] == 'x' || s[1] == 'X'))
+	{
+		s += 2;
+		base = 16;
+	}
+	else if (base == 0)
+		base = *s == '0' ? 8 : 10;
+
+	cutoff = ULLONG_MAX / base;
+	cutlim = ULLONG_MAX % base;
+
+	for (acc = 0, any = 0;; c = *s++)
+	{
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+
+		if (c >= base)
+			break;
+
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
+			any = -1;
+		else
+		{
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+
+	if (any < 0)
+	{
+		acc = ULLONG_MAX;
+		errno = ERANGE;
+	}
+	else if (any == 0)
+	{
+		errno = EINVAL;
+	}
+
+	if (endptr)
+		*endptr = (char *)(any ? s - 1 : str);
+
+	return acc;
+}
 
 export int system(const char *command)
 {

Userspace/libc/src/std/time.c

@@ -30,12 +30,29 @@ export long timezone;
 export char *tzname[2];
 
 export char *asctime(const struct tm *);
-export clock_t clock(void);
+
+export clock_t clock(void)
+{
+	clock_t processor_time = sysdep(Clock)();
+	if (processor_time == (clock_t)-1)
+	{
+		errno = EOVERFLOW;
+		return (clock_t)-1;
+	}
+	return processor_time;
+}
+
 export int clock_getcpuclockid(pid_t, clockid_t *);
-export int clock_getres(clockid_t, struct timespec *);
+export int clock_getres(clockid_t clock_id, struct timespec *res);
-export int clock_gettime(clockid_t, struct timespec *);
+
+export int clock_gettime(clockid_t clock_id, struct timespec *tp)
+{
+	return sysdep(ClockGetTime)(clock_id, tp);
+}
+
 export int clock_nanosleep(clockid_t, int, const struct timespec *, struct timespec *);
-export int clock_settime(clockid_t, const struct timespec *);
+export int clock_settime(clockid_t clock_id, const struct timespec *tp);
+;
 export char *ctime(const time_t *);
 export double difftime(time_t, time_t);
 export struct tm *getdate(const char *);
@@ -193,7 +210,20 @@ export int nanosleep(const struct timespec *, struct timespec *);
 export size_t strftime(char *restrict, size_t, const char *restrict, const struct tm *restrict);
 export size_t strftime_l(char *restrict, size_t, const char *restrict, const struct tm *restrict, locale_t);
 export char *strptime(const char *restrict, const char *restrict, struct tm *restrict);
-export time_t time(time_t *);
+
+export time_t time(time_t *tloc)
+{
+	time_t current_time = sysdep(Time)();
+	if (current_time == (time_t)-1)
+	{
+		errno = EOVERFLOW;
+		return (time_t)-1;
+	}
+	if (tloc)
+		*tloc = current_time;
+	return current_time;
+}
+
 export int timer_create(clockid_t, struct sigevent *restrict, timer_t *restrict);
 export int timer_delete(timer_t);
 export int timer_getoverrun(timer_t);

Userspace/libc/src/std/unistd.c

@@ -293,7 +293,12 @@ export ssize_t read(int fildes, void *buf, size_t nbyte)
 }
 
 export int readlink(const char *, char *, size_t);
-export int rmdir(const char *);
+
+export int rmdir(const char *path)
+{
+	return __check_errno(sysdep(RemoveDirectory)(path), -1);
+}
+
 export void *sbrk(intptr_t incr);
 export int setgid(gid_t);
 export int setpgid(pid_t, pid_t);
@@ -334,7 +339,12 @@ export int truncate(const char *, off_t);
 export char *ttyname(int);
 export int ttyname_r(int, char *, size_t);
 export useconds_t ualarm(useconds_t, useconds_t);
-export int unlink(const char *);
+
+export int unlink(const char *path)
+{
+	return __check_errno(sysdep(Unlink)(path), -1);
+}
+
 export int usleep(useconds_t);
 export pid_t vfork(void);
 

Userspace/libc/sysdeps/fennix/generic/syscalls.c

@@ -19,6 +19,8 @@
 #include <bits/libc.h>
 #include <string.h>
 
+extern int printf(const char *restrict format, ...);
+
 void sysdep(Exit)(int Status)
 {
 	call_exit(Status);
@@ -209,3 +211,29 @@ int sysdep(FileControl)(int Descriptor, int Command, void *Arg)
 {
 	return call_fcntl(Descriptor, Command, Arg);
 }
+
+int sysdep(ClockGetTime)(clockid_t ClockID, struct timespec *TP)
+{
+	return call_clock_gettime(ClockID, TP);
+}
+
+time_t sysdep(Time)(void)
+{
+	return call_time(NULL);
+}
+
+clock_t sysdep(Clock)()
+{
+	printf("sysdep(Clock): unimplemented\n");
+	return 0;
+}
+
+int sysdep(RemoveDirectory)(const char *Pathname)
+{
+	return call_rmdir(Pathname);
+}
+
+int sysdep(Unlink)(const char *Pathname)
+{
+	return call_unlink(Pathname);
+}