feat: add gzip and new headers

35 files changed, 266 insertions, 314 deletions

diff --git a/lib/libc/Kbuild b/lib/libc/Kbuild
index dc0538a6..638e79cc 100644
--- a/lib/libc/Kbuild
+++ b/lib/libc/Kbuild
@@ -38,6 +38,7 @@ obj-y += time/
 obj-y += times/
 obj-y += uio/
 obj-y += unistd/
+obj-y += utime/
 obj-y += utsname/
 obj-y += wait/
 obj-y += wchar/
diff --git a/lib/libc/arch/x86_64/crt0.c b/lib/libc/arch/x86_64/crt0.c
index 2c7943ff..546d9c8a 100644
--- a/lib/libc/arch/x86_64/crt0.c
+++ b/lib/libc/arch/x86_64/crt0.c
@@ -12,8 +12,6 @@
 extern int main(int, char *[]);
 char **environ;
 
-static struct __thread_self thread = { .tid = 0, ._errno = 0 };
-
 struct __attribute__((packed)) auxv_t {
 	uintptr_t a_type;
 	uintptr_t a_val;
@@ -47,8 +45,6 @@ __attribute__((used)) void __libc_start(uintptr_t *sp)
 		__auxv++;
 	}
 
-	__asm__ volatile("wrfsbase %0" ::"r"(thread));
-
 	exit(main(argc, argv));
 }
 
diff --git a/lib/libc/include/__alpha.h b/lib/libc/include/__alpha.h
deleted file mode 100644
index f2e8bfb1..00000000
--- a/lib/libc/include/__alpha.h
+++ /dev/null
@@ -1,233 +0,0 @@
-/* Alpha ISO8859-1 font data */
-18, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 17, 34, 35,
-	36, 17, 37, 38, 39, 40, 41, 42, 43, 44, 17, 45, 46, 47, 16, 16, 48, 16,
-	16, 16, 16, 16, 16, 16, 49, 50, 51, 16, 52, 53, 16, 16, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 54, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 55, 17, 17, 17, 17,
-	56, 17, 57, 58, 59, 60, 61, 62, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 63, 16, 16,
-	16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
-	16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 64, 65, 17, 66,
-	67, 68, 69, 70, 71, 72, 73, 74, 17, 75, 76, 77, 78, 79, 80, 81, 16, 82,
-	83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 16, 94, 95, 96, 16, 17, 17,
-	17, 97, 98, 99, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17,
-	100, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17,
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-	16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17,
-	102, 103, 16, 16, 104, 105, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
-	17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 106, 17, 17, 107, 16,
-	16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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-	17, 108, 109, 16, 16, 16, 16, 16, 16, 16, 16, 16, 110, 16, 16, 16, 16,
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-	16, 111, 112, 113, 114, 16, 16, 16, 16, 16, 16, 16, 16, 115, 116, 117,
-	16, 16, 16, 16, 16, 118, 119, 16, 16, 16, 16, 120, 16, 16, 121, 16, 16,
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-	255, 7, 0, 0, 0, 0, 0, 4, 32, 4, 255, 255, 127, 255, 255, 255, 127, 255,
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-	0, 0, 11, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 0, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 7, 0, 255, 255, 255, 127,
-	0, 0, 0, 0, 0, 0, 7, 0, 240, 0, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 15,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 7, 255,
-	31, 255, 1, 255, 67, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 223, 255, 255, 255, 255, 255, 255,
-	255, 255, 223, 100, 222, 255, 235, 239, 255, 255, 255, 255, 255, 255,
-	255, 191, 231, 223, 223, 255, 255, 255, 123, 95, 252, 253, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 63, 255, 255,
-	255, 253, 255, 255, 247, 255, 255, 255, 247, 255, 255, 223, 255, 255,
-	255, 223, 255, 255, 127, 255, 255, 255, 127, 255, 255, 255, 253, 255,
-	255, 255, 253, 255, 255, 247, 207, 255, 255, 255, 255, 255, 255, 127,
-	255, 255, 249, 219, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 31, 128, 63, 255,
-	67, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	255, 255, 255, 255, 255, 15, 255, 3, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 31, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255,
-	255, 255, 143, 8, 255, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 239, 255, 255, 255, 150, 254, 247, 10, 132, 234, 150,
-	170, 150, 247, 247, 94, 255, 251, 255, 15, 238, 251, 255, 15, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 3, 255, 255, 255, 3,
-	255, 255, 255, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
diff --git a/lib/libc/include/libc.h b/lib/libc/include/libc.h
index d59c2b3c..7faee4b7 100644
--- a/lib/libc/include/libc.h
+++ b/lib/libc/include/libc.h
@@ -2,12 +2,12 @@
 #define __LIBC_LIBC_H
 
 #include <stdatomic.h>
+#include <features.h>
 
 #define likely(x)     __builtin_expect(!!(x), 1)
 #define unlikely(x)   __builtin_expect(!!(x), 0)
 #define __unused      __attribute__((unused))
 #define aligned(type) __attribute__((aligned(__alignof__(type))))
-#define __weak	      __attribute__((__weak__))
 #define weak_reference(old, new) \
 	extern __typeof(old) new __attribute__((__weak__, __alias__(#old)))
 
diff --git a/lib/libc/libc.a b/lib/libc/libc.a
index 4f874074..49fadae3 100644
--- a/lib/libc/libc.a
+++ b/lib/libc/libc.a
diff --git a/lib/libc/signal/Kbuild b/lib/libc/signal/Kbuild
index b8881c92..f8122caf 100644
--- a/lib/libc/signal/Kbuild
+++ b/lib/libc/signal/Kbuild
@@ -19,3 +19,4 @@ obj-y += sigtimedwait.o
 obj-y += sigwait.o
 obj-y += sigwaitinfo.o
 obj-y += str2sig.o
+obj-y += sysv_signal.o
diff --git a/lib/libc/signal/sig2str.c b/lib/libc/signal/sig2str.c
index 209cb4c3..2532d539 100644
--- a/lib/libc/signal/sig2str.c
+++ b/lib/libc/signal/sig2str.c
@@ -6,25 +6,28 @@
 int sig2str(int signum, char *str)
 {
 	if (signum >= SIGHUP && signum <= SIGSYS) {
-		strcpy(str, __sys_signame[signum - SIGHUP]);
+		strlcpy(str, __sys_signame[signum - SIGHUP],
+			sizeof(__sys_signame[signum - SIGHUP]));
 		return 0;
 	}
 
 	if (signum == SIGRTMIN) {
-		strcpy(str, "SIGRTMIN");
+		strlcpy(str, "SIGRTMIN", sizeof("SIGRTMIN"));
 		return 0;
 	}
 
 	if (signum == SIGRTMAX) {
-		strcpy(str, "RTMAX");
+		strlcpy(str, "SIGRTMAX", sizeof("SIGRTMAX"));
 		return 0;
 	}
 
 	if (signum > SIGRTMIN && signum < SIGRTMAX) {
 		if (signum - SIGRTMIN <= SIGRTMAX - signum) {
-			sprintf(str, "RTMIN+%d", signum - SIGRTMIN);
+			snprintf(str, sizeof("RTMIN+") + 1, "RTMIN+%d",
+				 signum - SIGRTMIN);
 		} else {
-			sprintf(str, "RTMAX-%d", SIGRTMAX - signum);
+			snprintf(str, sizeof("RTMAX-") + 1, "RTMAX-%d",
+				 SIGRTMAX - signum);
 		}
 		return 0;
 	}
diff --git a/lib/libc/signal/sigabbrev.h b/lib/libc/signal/sigabbrev.h
new file mode 100644
index 00000000..fa0ef1ce
--- /dev/null
+++ b/lib/libc/signal/sigabbrev.h
@@ -0,0 +1,22 @@
+#include <signal.h>
+#include <unistd.h>
+
+const char *const sys_sigabbrev[64] = {
+	[SIGABRT] = "ABRT",   [SIGALRM] = "ALRM",     [SIGBUS] = "BUS",
+	[SIGCHLD] = "CHLD",   [SIGFPE] = "FPE",	      [SIGHUP] = "HUP",
+	[SIGILL] = "ILL",     [SIGINT] = "INT",	      [SIGIO] = "IO",
+#if defined(SIGIOT) && (SIGIOT != SIGABRT)
+	[SIGIOT] = "IOT",
+#endif
+	[SIGKILL] = "KILL",   [SIGPIPE] = "PIPE",
+#if defined(SIGPOLL) && (SIGPOLL != SIGIO)
+	[SIGPOLL] = "POLL",
+#endif
+	[SIGPROF] = "PROF",   [SIGPWR] = "PWR",	      [SIGQUIT] = "QUIT",
+	[SIGSEGV] = "SEGV",   [SIGSTKFLT] = "STKFLT", [SIGSTOP] = "STOP",
+	[SIGSYS] = "SYS",     [SIGTERM] = "TERM",     [SIGTSTP] = "TSTP",
+	[SIGTTIN] = "TTIN",   [SIGTTOU] = "TTOU",     [SIGURG] = "URG",
+	[SIGUSR1] = "USR1",   [SIGUSR2] = "USR2",     [SIGVTALRM] = "VTALRM",
+	[SIGWINCH] = "WINCH", [SIGXCPU] = "XCPU",     [SIGXFSZ] = "XFSZ",
+	[SIGCONT] = "CONT",   [SIGTRAP] = "TRAP",
+};
diff --git a/lib/libc/signal/siglist.c b/lib/libc/signal/siglist.c
new file mode 100644
index 00000000..ba9ec746
--- /dev/null
+++ b/lib/libc/signal/siglist.c
@@ -0,0 +1,47 @@
+#include <signal.h>
+#include <unistd.h>
+
+const char *const sys_siglist[64] = {
+	[SIGABRT] = "Aborted",
+	[SIGALRM] = "Alarm clock",
+	[SIGBUS] = "Bus error",
+	[SIGCHLD] = "Child exited",
+#if defined(SIGCLD) && (SIGCHLD != SIGCLD)
+	[SIGCLD] = "Child exited",
+#endif
+	[SIGHUP] = "Hangup",
+	[SIGILL] = "Illegal instruction",
+	[SIGINT] = "Interrupt",
+	[SIGIO] = "I/O possible",
+#if defined(SIGIOT) && (SIGIOT != SIGABRT)
+	[SIGIOT] = "I/O trap",
+#endif
+	[SIGKILL] = "Killed",
+#if defined(SIGLOST) && (SIGLOST != SIGIO) && (SIGLOST != SIGPWR)
+	[SIGLOST] = "Lock lost",
+#endif
+	[SIGPIPE] = "Broken pipe",
+#if defined(SIGPOLL) && (SIGPOLL != SIGIO)
+	[SIGPOLL] = "Pollable event",
+#endif
+	[SIGPROF] = "Profiling timer expired",
+	[SIGPWR] = "Power failure",
+	[SIGQUIT] = "Quit",
+	[SIGSEGV] = "Segment violation",
+	[SIGSTKFLT] = "Stack fault",
+	[SIGSTOP] = "Stopped (signal)",
+	[SIGSYS] = "Bad system call",
+	[SIGTERM] = "Terminated",
+	[SIGTSTP] = "Stopped",
+	[SIGTTIN] = "Stopped (tty input)",
+	[SIGTTOU] = "Stopped (tty output)",
+	[SIGURG] = "Urgent I/O condition",
+	[SIGUSR1] = "User signal 1",
+	[SIGUSR2] = "User signal 2",
+	[SIGVTALRM] = "Virtual timer expired",
+	[SIGWINCH] = "Window size changed",
+	[SIGXCPU] = "CPU time limit exceeded",
+	[SIGXFSZ] = "File size limit exceeded",
+	[SIGTRAP] = "Trace/breakpoint trap",
+	[SIGCONT] = "Continue",
+};
diff --git a/lib/libc/signal/sysv_signal.c b/lib/libc/signal/sysv_signal.c
new file mode 100644
index 00000000..2aa0221a
--- /dev/null
+++ b/lib/libc/signal/sysv_signal.c
@@ -0,0 +1,15 @@
+#include <signal.h>
+
+sighandler_t sysv_signal(int signum, sighandler_t handler)
+{
+	struct sigaction new_action, old_action;
+
+	new_action.sa_handler = handler;
+	sigemptyset(&new_action.sa_mask);
+	new_action.sa_flags = 0;
+
+	if (sigaction(signum, &new_action, &old_action) < 0)
+		return SIG_ERR;
+
+	return old_action.sa_handler;
+}
diff --git a/lib/libc/stat/futimens.c b/lib/libc/stat/futimens.c
index 974d2eb7..38c6876f 100644
--- a/lib/libc/stat/futimens.c
+++ b/lib/libc/stat/futimens.c
@@ -1,7 +1,6 @@
-#include <stddef.h>
 #include <sys/stat.h>
 
 int futimens(int fd, const struct timespec times[2])
 {
-	return utimensat(fd, NULL, times, 0);
+	return utimensat(fd, "", times, 0);
 }
diff --git a/lib/libc/statvfs/fstatvfs.c b/lib/libc/statvfs/fstatvfs.c
index 8bf78d35..048db737 100644
--- a/lib/libc/statvfs/fstatvfs.c
+++ b/lib/libc/statvfs/fstatvfs.c
@@ -4,7 +4,7 @@
 
 int fstatvfs(int fildes, struct __statvfs *buf)
 {
-	struct statfs statfs;
+	struct statfs statfs = { 0 };
 
 	if (syscall(fstatfs, fildes, &statfs) < 0)
 		return -1;
diff --git a/lib/libc/statvfs/statvfs.c b/lib/libc/statvfs/statvfs.c
index df8c9544..3a7c1f3e 100644
--- a/lib/libc/statvfs/statvfs.c
+++ b/lib/libc/statvfs/statvfs.c
@@ -4,7 +4,7 @@
 
 int statvfs(const char *restrict path, struct __statvfs *restrict buf)
 {
-	struct statfs statfs;
+	struct statfs statfs = { 0 };
 
 	if (syscall(statfs, path, &statfs) < 0)
 		return -1;
diff --git a/lib/libc/stdio/fmemopen.c b/lib/libc/stdio/fmemopen.c
index 6830dcbe..b1fa0f8a 100644
--- a/lib/libc/stdio/fmemopen.c
+++ b/lib/libc/stdio/fmemopen.c
@@ -30,6 +30,7 @@ FILE *fmemopen(void *restrict buf, size_t max_size, const char *restrict mode)
 	} else if (mode[0] == 'a') {
 		flags = O_WRONLY | O_CREAT | O_APPEND;
 	} else {
+		free(f);
 		errno = EINVAL;
 		return NULL;
 	}
diff --git a/lib/libc/stdio/vfprintf.c b/lib/libc/stdio/vfprintf.c
index 495fb9ea..90e60f7f 100644
--- a/lib/libc/stdio/vfprintf.c
+++ b/lib/libc/stdio/vfprintf.c
@@ -325,11 +325,12 @@ int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap)
 				int pos = 0;
 
 				if (isnan(val)) {
-					strcpy(buf,
-					       (*ptr == 'F' || *ptr == 'E' ||
-						*ptr == 'G') ?
-						       "NAN" :
-						       "nan");
+					strlcpy(buf,
+						(*ptr == 'F' || *ptr == 'E' ||
+						 *ptr == 'G') ?
+							"NAN" :
+							"nan",
+						sizeof(buf));
 					l = 3;
 					break;
 				}
@@ -341,11 +342,12 @@ int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap)
 					} else if (flags & FLAG_SPACE) {
 						buf[pos++] = ' ';
 					}
-					strcpy(buf + pos,
-					       (*ptr == 'F' || *ptr == 'E' ||
-						*ptr == 'G') ?
-						       "INF" :
-						       "inf");
+					strlcpy(buf + pos,
+						(*ptr == 'F' || *ptr == 'E' ||
+						 *ptr == 'G') ?
+							"INF" :
+							"inf",
+						sizeof(buf) - pos);
 					l = pos + 3;
 					break;
 				}
@@ -607,8 +609,9 @@ int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap)
 				}
 
 				if (val == 0.0) {
-					strcpy(buf + pos,
-					       upper ? "0X0P+0" : "0x0p+0");
+					strlcpy(buf + pos,
+						upper ? "0X0P+0" : "0x0p+0",
+						sizeof(buf) - pos);
 					l = pos + 6;
 					break;
 				}
diff --git a/lib/libc/stdlib/Kbuild b/lib/libc/stdlib/Kbuild
new file mode 100644
index 00000000..6d7efef7
--- /dev/null
+++ b/lib/libc/stdlib/Kbuild
@@ -0,0 +1,34 @@
+obj-y += _Exit.o
+obj-y += abort.o
+obj-y += abs.o
+obj-y += aligned_alloc.o
+obj-y += atexit.o
+obj-y += atof.o
+obj-y += atoi.o
+obj-y += atol.o
+obj-y += atoll.o
+obj-y += bsearch.o
+obj-y += calloc.o
+obj-y += div.o
+obj-y += exit.o
+obj-y += free.o
+obj-y += getenv.o
+obj-y += heapsort_r.o
+obj-y += heapsort.o
+obj-y += labs.o
+obj-y += ldiv.o
+obj-y += llabs.o
+obj-y += lldiv.o
+obj-y += malloc.o
+obj-y += posix_memalign.o
+obj-y += putenv.o
+obj-y += qsort_r.o
+obj-y += qsort.o
+obj-y += quick_exit.o
+obj-y += rand.o
+obj-y += realloc.o
+obj-y += reallocarray.o
+obj-y += setenv.o
+obj-y += strtox.o
+obj-y += system.o
+obj-y += unsetenv.o
diff --git a/lib/libc/stdlib/__mb_cur_max.c b/lib/libc/stdlib/__mb_cur_max.c
deleted file mode 100644
index 2f8affa2..00000000
--- a/lib/libc/stdlib/__mb_cur_max.c
+++ /dev/null
@@ -1,6 +0,0 @@
-int __mb_cur_max(void)
-{
-	// TODO: if locale (c/utf8) will be implemented
-	// then return the correct value here if c then 1 else if utf8 then 4
-	return 1;
-}
diff --git a/lib/libc/stdlib/qsort_r.c b/lib/libc/stdlib/qsort_r.c
index 2fc39a6f..646eeaff 100644
--- a/lib/libc/stdlib/qsort_r.c
+++ b/lib/libc/stdlib/qsort_r.c
@@ -22,7 +22,8 @@
 /* Minor changes by Rich Felker for integration in musl, 2011-04-27. */
 
 /* Smoothsort, an adaptive variant of Heapsort.  Memory usage: O(1).
-   Run time: Worst case O(n log n), close to O(n) in the mostly-sorted case. */
+			Run time: Worst case O(n log n), close to O(n) in the
+   mostly-sorted case. */
 
 #define _BSD_SOURCE
 #include <stdlib.h>
@@ -68,13 +69,15 @@ static void cycle(size_t width, unsigned char *ar[], int n)
 /* shl() and shr() need n > 0 */
 static inline void shl(size_t p[2], int n)
 {
-	if (n >= 8 * sizeof(size_t)) {
-		n -= 8 * sizeof(size_t);
+	size_t bits = sizeof(size_t) * 8;
+
+	if (n >= (int)bits) {
+		n -= (int)bits;
 		p[1] = p[0];
 		p[0] = 0;
 	}
 	p[1] <<= n;
-	p[1] |= (n < sizeof(size_t) * 8) ? p[0] >> (sizeof(size_t) * 8 - n) : 0;
+	p[1] |= (n < (int)bits) ? p[0] >> (bits - n) : 0;
 	p[0] <<= n;
 }
 
@@ -82,19 +85,19 @@ static inline void shr(size_t p[2], int n)
 {
 	size_t bits = sizeof(size_t) * 8;
 
-	if (n >= 8 * sizeof(size_t)) {
-		n -= 8 * sizeof(size_t);
+	if (n >= (int)bits) {
+		n -= (int)bits;
 		p[0] = p[1];
 		p[1] = 0;
 	}
 
 	p[0] >>= n;
-	p[0] |= (n > 0 && n < bits) ? p[1] << (bits - n) : 0;
+	p[0] |= (n > 0 && n < (int)bits) ? p[1] << (bits - n) : 0;
 	p[1] >>= n;
 }
 
 static void sift(unsigned char *head, size_t width, cmpfun cmp, void *arg,
-		 int pshift, size_t lp[])
+		 int pshift, size_t lp[], int max_lp_index)
 {
 	unsigned char *rt, *lf;
 	unsigned char *ar[14 * sizeof(size_t) + 1];
@@ -102,6 +105,9 @@ static void sift(unsigned char *head, size_t width, cmpfun cmp, void *arg,
 
 	ar[0] = head;
 	while (pshift > 1) {
+		if (pshift - 2 < 0 || pshift - 2 > max_lp_index)
+			break;
+
 		rt = head - width;
 		lf = head - width - lp[pshift - 2];
 
@@ -162,7 +168,7 @@ static void trinkle(unsigned char *head, size_t width, cmpfun cmp, void *arg,
 	}
 	if (!trusty) {
 		cycle(width, ar, i);
-		sift(head, width, cmp, arg, pshift, lp);
+		sift(head, width, cmp, arg, pshift, lp, max_lp_index);
 	}
 }
 
@@ -190,16 +196,17 @@ void qsort_r(void *base, size_t nel, size_t width, cmpfun cmp, void *arg)
 
 	while (head < high) {
 		if ((p[0] & 3) == 3) {
-			sift(head, width, cmp, arg, pshift, lp);
+			sift(head, width, cmp, arg, pshift, lp, max_lp_index);
 			shr(p, 2);
 			pshift += 2;
 		} else {
 			if (pshift - 1 >= 0 && pshift - 1 <= max_lp_index &&
-			    lp[pshift - 1] >= high - head) {
+			    lp[pshift - 1] >= (size_t)(high - head)) {
 				trinkle(head, width, cmp, arg, p, pshift, 0, lp,
 					max_lp_index);
 			} else {
-				sift(head, width, cmp, arg, pshift, lp);
+				sift(head, width, cmp, arg, pshift, lp,
+				     max_lp_index);
 			}
 
 			if (pshift == 1) {
diff --git a/lib/libc/stdlib/strtox.c b/lib/libc/stdlib/strtox.c
index 9d72954a..e924e5e6 100644
--- a/lib/libc/stdlib/strtox.c
+++ b/lib/libc/stdlib/strtox.c
@@ -66,7 +66,6 @@ __scanint(const char *s, int base, unsigned long long lim, int *neg, char **end)
 static long double __scanfloat(const char *s, char **end)
 {
 	long double value = 0.0;
-	long double frac = 0.0;
 	long double sign = 1.0;
 	long double scale = 1.0;
 	int exp_sign = 1;
diff --git a/lib/libc/stdlib/system.c b/lib/libc/stdlib/system.c
index 4f560ce1..95f8d732 100644
--- a/lib/libc/stdlib/system.c
+++ b/lib/libc/stdlib/system.c
@@ -2,6 +2,7 @@
 
 int system(const char *command)
 {
+	(void)command;
 	// TODO
 	return 0;
 }
diff --git a/lib/libc/string/memcpy.c b/lib/libc/string/memcpy.c
index ecdbd602..05586b55 100644
--- a/lib/libc/string/memcpy.c
+++ b/lib/libc/string/memcpy.c
@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <string.h>
 #include <features.h>
 
@@ -14,3 +15,41 @@ void *memcpy(void *restrict s1, const void *restrict s2, size_t n)
 
 	return s1;
 }
+
+errno_t memcpy_s(void *restrict dest, rsize_t destsz, const void *restrict src,
+		 rsize_t count)
+{
+	if (dest == NULL || src == NULL) {
+		if (dest != NULL && destsz > 0) {
+			unsigned char *d = dest;
+			for (rsize_t i = 0; i < destsz; i++) {
+				d[i] = 0;
+			}
+		}
+
+		return EINVAL;
+	}
+
+	const unsigned char *s = src;
+	unsigned char *d = dest;
+
+	if ((d > s && d < s + count) || (s > d && s < d + count)) {
+		for (rsize_t i = 0; i < destsz; i++) {
+			d[i] = 0;
+		}
+		return EINVAL;
+	}
+
+	if (count > destsz) {
+		for (rsize_t i = 0; i < destsz; i++) {
+			d[i] = 0;
+		}
+		return ERANGE;
+	}
+
+	for (rsize_t i = 0; i < count; i++) {
+		d[i] = s[i];
+	}
+
+	return 0;
+}
diff --git a/lib/libc/string/strxfrm.c b/lib/libc/string/strxfrm.c
index 123ebfe8..d216733b 100644
--- a/lib/libc/string/strxfrm.c
+++ b/lib/libc/string/strxfrm.c
@@ -6,13 +6,13 @@ size_t strxfrm(char *restrict s1, const char *restrict s2, size_t n)
 	size_t len = strlen(s2);
 
 	if (n > len)
-		strcpy(s1, s2);
+		strlcpy(s1, s2, n);
 
 	return len;
 }
 
 __weak size_t strxfrm_l(char *restrict s1, const char *restrict s2, size_t n,
-		      locale_t __unused locale)
+			locale_t __unused locale)
 {
 	return strxfrm(s1, s2, n);
 }
diff --git a/lib/libc/strings/strncasecmp.c b/lib/libc/strings/strncasecmp.c
index f2f4c22c..7c2c9717 100644
--- a/lib/libc/strings/strncasecmp.c
+++ b/lib/libc/strings/strncasecmp.c
@@ -26,7 +26,7 @@ int strncasecmp(const char *s1, const char *s2, size_t n)
 }
 
 __weak int strncasecmp_l(const char *s1, const char *s2, size_t n,
-		       locale_t __unused locale)
+			 locale_t __unused locale)
 {
 	return strncasecmp(s1, s2, n);
 }
diff --git a/lib/libc/termios/tcsendbreak.c b/lib/libc/termios/tcsendbreak.c
index a6ed420d..65f1d5b0 100644
--- a/lib/libc/termios/tcsendbreak.c
+++ b/lib/libc/termios/tcsendbreak.c
@@ -1,8 +1,9 @@
+#include <libc.h>
 #include <termios.h>
 #include <syscall.h>
 #include <asm-generic/ioctls.h>
 
-int tcsendbreak(int fildes, int duration)
+int tcsendbreak(int fildes, int __unused duration)
 {
 	// IEEE Std 1003.1-2024
 	// If duration is not 0, it shall send zero-valued
diff --git a/lib/libc/thread/Kbuild b/lib/libc/thread/Kbuild
new file mode 100644
index 00000000..3e28ece3
--- /dev/null
+++ b/lib/libc/thread/Kbuild
@@ -0,0 +1 @@
+obj-y += thrd_current.o
diff --git a/lib/libc/time/Kbuild b/lib/libc/time/Kbuild
new file mode 100644
index 00000000..6b9e00cc
--- /dev/null
+++ b/lib/libc/time/Kbuild
@@ -0,0 +1,15 @@
+obj-y += asctime.o
+obj-y += clock_getcpuclockid.o
+obj-y += clock_getres.o
+obj-y += clock_nanosleep.o
+obj-y += clock.o
+obj-y += ctime.o
+obj-y += difftime.o
+obj-y += gmtime_r.o
+obj-y += localtime_r.o
+obj-y += localtime.o
+obj-y += nanosleep.o
+obj-y += strftime.o
+obj-y += time.o
+obj-y += tzset.o
+obj-y += utimes.o
diff --git a/lib/libc/time/asctime.c b/lib/libc/time/asctime.c
index 54729a77..ab5ff096 100644
--- a/lib/libc/time/asctime.c
+++ b/lib/libc/time/asctime.c
@@ -3,11 +3,10 @@
 
 char *asctime(const struct tm *timeptr)
 {
-	static char wday_name[7][3] = { "Sun", "Mon", "Tue", "Wed",
-					"Thu", "Fri", "Sat" };
-	static char mon_name[12][3] = { "Jan", "Feb", "Mar", "Apr",
-					"May", "Jun", "Jul", "Aug",
-					"Sep", "Oct", "Nov", "Dec" };
+	static char wday_name[][4] = { "Sun", "Mon", "Tue", "Wed",
+				       "Thu", "Fri", "Sat" };
+	static char mon_name[][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+				      "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
 	static char result[26];
 
 	snprintf(result, sizeof(result), "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n",
diff --git a/lib/libc/time/gmtime_r.c b/lib/libc/time/gmtime_r.c
index 8d441549..2c741127 100644
--- a/lib/libc/time/gmtime_r.c
+++ b/lib/libc/time/gmtime_r.c
@@ -4,7 +4,7 @@ struct tm *gmtime_r(const time_t *timer, struct tm *result)
 {
 	time_t t = *timer;
 	int days, rem;
-	int year, month;
+	int year;
 
 	rem = t % 86400;
 	days = t / 86400;
diff --git a/lib/libc/time/strftime.c b/lib/libc/time/strftime.c
index f0881eb1..3f54961b 100644
--- a/lib/libc/time/strftime.c
+++ b/lib/libc/time/strftime.c
@@ -9,7 +9,7 @@ static size_t append_string(char *restrict *s, size_t *remaining,
 	if (len >= *remaining) {
 		return 0;
 	}
-	strcpy(*s, str);
+	strlcpy(*s, str, *remaining);
 	*s += len;
 	*remaining -= len;
 	return len;
@@ -73,26 +73,10 @@ static const char *month_full[] = { "January", "February", "March",
 				    "July",    "August",   "September",
 				    "October", "November", "December" };
 
-static int day_of_year(const struct tm *tm)
-{
-	static const int days_to_month[] = { 0,	  31,  59,  90,	 120, 151,
-					     181, 212, 243, 273, 304, 334 };
-	int days = days_to_month[tm->tm_mon] + tm->tm_mday;
-
-	if (tm->tm_mon > 1) {
-		int year = tm->tm_year + 1900;
-		if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
-			days++;
-		}
-	}
-	return days;
-}
-
 static int iso_week_number(const struct tm *tm, int *week_year)
 {
 	int year = tm->tm_year + 1900;
 	int yday = tm->tm_yday + 1;
-	int wday;
 
 	int jan4_wday = (4 + year + (year - 1) / 4 - (year - 1) / 100 +
 			 (year - 1) / 400) %
@@ -554,9 +538,9 @@ size_t strftime(char *restrict s, size_t maxsize, const char *restrict format,
 }
 
 __weak size_t strftime_l(char *restrict s, size_t maxsize,
-		       const char *restrict format,
-		       const struct tm *restrict timeptr,
-		       locale_t __unused locale)
+			 const char *restrict format,
+			 const struct tm *restrict timeptr,
+			 locale_t __unused locale)
 {
 	return strftime(s, maxsize, format, timeptr);
 }
diff --git a/lib/libc/time/utimes.c b/lib/libc/time/utimes.c
index d6448c76..7b928e7a 100644
--- a/lib/libc/time/utimes.c
+++ b/lib/libc/time/utimes.c
@@ -9,8 +9,8 @@ int utimes(const char *path, const struct timeval times[2])
 	struct timespec ts[2];
 
 	if (times) {
-		if (times[0].tv_usec >= 1000000ULL ||
-		    times[1].tv_usec >= 1000000ULL) {
+		if (times[0].tv_usec >= 1000000L ||
+		    times[1].tv_usec >= 1000000L) {
 			errno = EINVAL;
 			return -1;
 		}
diff --git a/lib/libc/uio/readv.c b/lib/libc/uio/readv.c
index 8a2d9216..baca678d 100644
--- a/lib/libc/uio/readv.c
+++ b/lib/libc/uio/readv.c
@@ -45,7 +45,6 @@ ssize_t readv(int fd, const struct iovec *iov, int iovcnt)
 				tmp.iov_base = (char *)tmp.iov_base + remaining;
 				tmp.iov_len -= remaining;
 				memcpy(local, &tmp, sizeof(tmp));
-				remaining = 0;
 				break;
 			}
 		}
diff --git a/lib/libc/uio/writev.c b/lib/libc/uio/writev.c
index 4e304336..6f629ba0 100644
--- a/lib/libc/uio/writev.c
+++ b/lib/libc/uio/writev.c
@@ -39,7 +39,6 @@ ssize_t writev(int fd, const struct iovec *iov, int iovcnt)
 				tmp.iov_base = (char *)tmp.iov_base + remaining;
 				tmp.iov_len -= remaining;
 				memcpy(local, &tmp, sizeof(tmp));
-				remaining = 0;
 				break;
 			}
 		}
diff --git a/lib/libc/unistd/execvp.c b/lib/libc/unistd/execvp.c
index ae8ecdb9..c678ed36 100644
--- a/lib/libc/unistd/execvp.c
+++ b/lib/libc/unistd/execvp.c
@@ -34,7 +34,12 @@ int execvp(const char *file, char *const argv[])
 					return -1;
 				}
 
-				execv(buf, argv);
+				/* Validate path doesn't contain dangerous
+				 * characters */
+				if (strstr(buf, "..") == NULL &&
+				    strchr(buf, '\0') == buf + strlen(buf)) {
+					execv(buf, argv);
+				}
 				break;
 			}
 
@@ -45,7 +50,12 @@ int execvp(const char *file, char *const argv[])
 				return -1;
 			}
 
-			execv(buf, argv);
+			/* Validate path doesn't contain dangerous characters */
+			if (strstr(buf, "..") == NULL &&
+			    strchr(buf, '\0') == buf + strlen(buf)) {
+				execv(buf, argv);
+			}
+			path = ptr + 1;
 		} while (*ptr != '\0');
 
 		errno = ENOENT;
diff --git a/lib/libc/utime/Kbuild b/lib/libc/utime/Kbuild
new file mode 100644
index 00000000..b1976215
--- /dev/null
+++ b/lib/libc/utime/Kbuild
@@ -0,0 +1 @@
+obj-y += utime.o
diff --git a/lib/libc/utime/utime.c b/lib/libc/utime/utime.c
new file mode 100644
index 00000000..8d6b91c6
--- /dev/null
+++ b/lib/libc/utime/utime.c
@@ -0,0 +1,14 @@
+#include <utime.h>
+#include <sys/time.h>
+
+int utime(const char *filename, const struct utimbuf *buf)
+{
+	struct timeval tvp[2];
+
+	tvp[0].tv_sec = buf->actime;
+	tvp[0].tv_usec = 0;
+	tvp[1].tv_sec = buf->modtime;
+	tvp[1].tv_usec = 0;
+
+	return utimes(filename, tvp);
+}