Ports: Added an oksh port

Currently has some problems such as not killing jobs when (ctrl + c)
and depends on an implementation of sigsuspend.

Ports/AvailablePorts.md

@@ -65,6 +65,7 @@ Please make sure to keep this list up to date when adding and updating ports. :^
 | [`nyancat`](nyancat/)          | Nyancat                                       |                   | https://github.com/klange/nyancat                     |
 | [`openssh`](openssh/)          | OpenSSH                                       | 8.3-9ca7e9c       | https://github.com/openssh/openssh-portable           |
 | [`openssl`](openssl/)          | OpenSSL                                       | 1.0.2             | https://www.openssl.org/                              |
+| [`oksh`](oksh/)                | oksh                                          | 6.8.1             | https://github.com/ibara/oksh                         |
 | [`patch`](patch/)              | patch (OpenBSD)                               | 6.6               | https://github.com/ibara/libpuffy                     |
 | [`pcre2`](pcre2/)              | Perl-compatible Regular Expressions (PCRE2)   | 10.34             | https://www.pcre.org/                                 |
 | [`pkgconf`](pkgconf/)          | pkgconf                                       | 1.7.3             | https://github.com/pkgconf/pkgconf                    |

Ports/oksh/package.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=oksh
+useconfigure=true
+version=6.8.1
+depends="ncurses"
+workdir=oksh-${version}
+files="https://github.com/ibara/oksh/releases/download/oksh-${version}/oksh-${version}.tar.gz oksh-${version}.tar.gz"
+
+configure() {
+    export CC=${SERENITY_ROOT}/Toolchain/Local/${SERENITY_ARCH}/bin/${SERENITY_ARCH}-pc-serenity-gcc 
+    export CFLAGS="" 
+    export LDFLAGS="-lncurses" 
+    run ./configure --no-thanks
+}
+
+install() {
+    run cp oksh "${SERENITY_BUILD_DIR}/Root/bin"
+}

Ports/oksh/patches/disable_flock.patch

@@ -0,0 +1,28 @@
+diff --git a/history.c b/history.c
+index 59876da..b03cc7a 100644
+--- a/history.c
++++ b/history.c
+@@ -23,6 +23,8 @@
+ 
+ #include "sh.h"
+ 
++#define SMALL
++
+ #if !defined(HAVE_STRAVIS) || !defined(HAVE_STRUNVIS)
+ #include "vis.h"
+ #else
+@@ -636,12 +638,12 @@ init_histvec(void)
+ static void
+ history_lock(int operation)
+ {
+-	while (flock(fileno(histfh), operation) != 0) {
++	/*while (flock(fileno(histfh), operation) != 0) {
+ 		if (errno == EINTR || errno == EAGAIN)
+ 			continue;
+ 		else
+ 			break;
+-	}
++	}*/
+ }
+ 
+ /*

Ports/oksh/patches/disable_rlimit.patch

@@ -0,0 +1,70 @@
+diff --git a/c_ulimit.c b/c_ulimit.c
+index 65e0cca..587f08a 100644
+--- a/c_ulimit.c
++++ b/c_ulimit.c
+@@ -45,15 +45,15 @@ c_ulimit(char **wp)
+ {
+ 	static const struct limits limits[] = {
+ 		/* Do not use options -H, -S or -a or change the order. */
+-		{ "time(cpu-seconds)", RLIMIT_CPU, 1, 't' },
+-		{ "file(blocks)", RLIMIT_FSIZE, 512, 'f' },
+-		{ "coredump(blocks)", RLIMIT_CORE, 512, 'c' },
+-		{ "data(kbytes)", RLIMIT_DATA, 1024, 'd' },
+-		{ "stack(kbytes)", RLIMIT_STACK, 1024, 's' },
+-		{ "lockedmem(kbytes)", RLIMIT_MEMLOCK, 1024, 'l' },
+-		{ "memory(kbytes)", RLIMIT_RSS, 1024, 'm' },
+-		{ "nofiles(descriptors)", RLIMIT_NOFILE, 1, 'n' },
+-		{ "processes", RLIMIT_NPROC, 1, 'p' },
++		{ "time(cpu-seconds)", 1, 1, 't' },
++		{ "file(blocks)", 512, 512, 'f' },
++		{ "coredump(blocks)", 512, 512, 'c' },
++		{ "data(kbytes)", 1024, 1024, 'd' },
++		{ "stack(kbytes)", 1024, 1024, 's' },
++		{ "lockedmem(kbytes)", 1024, 1024, 'l' },
++		{ "memory(kbytes)", 1024, 1024, 'm' },
++		{ "nofiles(descriptors)", 1, 1, 'n' },
++		{ "processes", 1, 1, 'p' },
+ 		{ NULL }
+ 	};
+ 	const char	*options = "HSat#f#c#d#s#l#m#n#p#";
+@@ -133,7 +133,7 @@ c_ulimit(char **wp)
+ 
+ static int
+ set_ulimit(const struct limits *l, const char *v, int how)
+-{
++{/*
+ 	rlim_t		val = 0;
+ 	struct rlimit	limit;
+ 
+@@ -150,7 +150,7 @@ set_ulimit(const struct limits *l, const char *v, int how)
+ 		 * If this causes problems, will have to add parameter to
+ 		 * evaluate() to control if unset params are 0 or an error.
+ 		 */
+-		if (!rval && !digit(v[0])) {
++/*		if (!rval && !digit(v[0])) {
+ 			bi_errorf("invalid limit: %s", v);
+ 			return 1;
+ 		}
+@@ -169,13 +169,13 @@ set_ulimit(const struct limits *l, const char *v, int how)
+ 			bi_errorf("bad -%c limit: %s", l->option,
+ 			    strerror(errno));
+ 		return 1;
+-	}
++	}*/
+ 	return 0;
+ }
+ 
+ static void
+ print_ulimit(const struct limits *l, int how)
+-{
++{/*
+ 	rlim_t		val = 0;
+ 	struct rlimit	limit;
+ 
+@@ -189,5 +189,5 @@ print_ulimit(const struct limits *l, int how)
+ 	else {
+ 		val /= l->factor;
+ 		shprintf("%" PRIi64 "\n", (int64_t) val);
+-	}
++	}*/
+ }

Ports/oksh/patches/disable_tty.patch

@@ -0,0 +1,13 @@
+diff --git a/tty.c b/tty.c
+index a72e5cd..96fa904 100644
+--- a/tty.c
++++ b/tty.c
+@@ -33,7 +33,7 @@ tty_init(int init_ttystate)
+ 	tty_close();
+ 	tty_devtty = 1;
+ 
+-	tfd = open("/dev/tty", O_RDWR, 0);
++	tfd = open("/dev/tty0", O_RDWR, 0);
+ 	if (tfd == -1) {
+ 		tty_devtty = 0;
+ 		warningf(false, "No controlling tty (open /dev/tty: %s)",

Ports/oksh/patches/implement_isblank.patch

@@ -0,0 +1,16 @@
+diff --git a/charclass.h b/charclass.h
+index 5edb2c1..af00709 100644
+--- a/charclass.h
++++ b/charclass.h
+@@ -7,6 +7,11 @@
+ /*
+  * POSIX character class support for fnmatch() and glob().
+  */
++int
++isblank(int c)
++{
++	return (c == ' ' || c == '\t');
++}
+ static struct cclass {
+ 	const char *name;
+ 	int (*isctype)(int);

Ports/oksh/patches/remove_issetugid.patch

@@ -0,0 +1,28 @@
+diff --git a/misc.c b/misc.c
+index b440088..1c32061 100644
+--- a/misc.c
++++ b/misc.c
+@@ -291,22 +291,7 @@ change_flag(enum sh_flag f,
+ 			Flag(f) = newval;
+ 		}
+ 	} else
+-	/* Turning off -p? */
+-	if (f == FPRIVILEGED && oldval && !newval && issetugid() &&
+-	    !dropped_privileges) {
+-		gid_t gid = getgid();
+-
+-		setresgid(gid, gid, gid);
+-		setgroups(1, &gid);
+-		setresuid(ksheuid, ksheuid, ksheuid);
+-
+-#ifdef HAVE_PLEDGE
+-		if (pledge("stdio rpath wpath cpath fattr flock getpw proc "
+-		    "exec tty", NULL) == -1)
+-			bi_errorf("pledge fail");
+-#endif
+-		dropped_privileges = 1;
+-	} else if (f == FPOSIX && newval) {
++	if (f == FPOSIX && newval) {
+ 		Flag(FBRACEEXPAND) = 0;
+ 	}
+ 	/* Changing interactive flag? */

Ports/oksh/patches/remove_redeclarations.patch

@@ -0,0 +1,101 @@
+diff --git a/jobs.c b/jobs.c
+index 121c0cf..b30d105 100644
+--- a/jobs.c
++++ b/jobs.c
+@@ -30,6 +30,7 @@
+ 
+ #include "sh.h"
+ #include "tty.h"
++#include "portable.h"
+ 
+ /* Order important! */
+ #define PRUNNING	0
+diff --git a/portable.h b/portable.h
+index 899c974..864e112 100644
+--- a/portable.h
++++ b/portable.h
+@@ -61,10 +61,8 @@
+ #define _PW_NAME_LEN	MAXLOGNAME
+ #elif defined(__sun)
+ #define _PW_NAME_LEN	LOGNAME_MAX
+-#elif defined(__hpux)
+-#define _PW_NAME_LEN	8
+ #else
+-#define _PW_NAME_LEN	MAXLOGNAME - 1
++#define _PW_NAME_LEN	8
+ #endif /* __linux__ || __CYGWIN__ || _AIX || __NetBSD__ || __sun || __midipix__ || __HAIKU__ */
+ #endif /* !_PW_NAME_LEN */
+ 
+@@ -116,6 +114,15 @@
+ #define nice(x) (int)0
+ #endif /* __HAIKU__ */
+ 
++#ifdef __serenity__
++#define _PATH_DEFPATH "/usr/bin:/usr/local/bin"
++#define _PATH_STDPATH   "/usr/bin:/bin:/usr/sbin:/sbin:"
++#define _CS_PATH 1
++#define WCOREFLAG 0200
++#define WCOREDUMP(x) ((x) & WCOREFLAG)
++#define nice(x) (int)0
++#endif
++
+ #ifndef HAVE_SETRESGID
+ #define setresgid(x, y, z)	setgid(x); setegid(y); setgid(z)
+ #endif /* !HAVE_SETRESGID */
+@@ -128,30 +135,6 @@
+ #define srand_deterministic(x)	srand(x)
+ #endif /* !HAVE_SRAND_DETERMINISTIC */
+ 
+-#ifndef HAVE_TIMERADD
+-#define timeradd(tvp, uvp, vvp)                                         \
+-        do {                                                            \
+-                (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;          \
+-                (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;       \
+-                if ((vvp)->tv_usec >= 1000000) {                        \
+-                        (vvp)->tv_sec++;                                \
+-                        (vvp)->tv_usec -= 1000000;                      \
+-                }                                                       \
+-        } while (0)
+-#endif /* !HAVE_TIMERADD */
+-
+-#ifndef HAVE_TIMERSUB
+-#define timersub(tvp, uvp, vvp)                                         \
+-        do {                                                            \
+-                (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
+-                (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
+-                if ((vvp)->tv_usec < 0) {                               \
+-                        (vvp)->tv_sec--;                                \
+-                        (vvp)->tv_usec += 1000000;                      \
+-                }                                                       \
+-        } while (0)
+-#endif /* !HAVE_TIMERSUB */
+-
+ /* struct stat compatibility */
+ #ifndef HAVE_ST_MTIM
+ #ifndef HAVE_ST_MTIMESPEC
+@@ -240,9 +223,9 @@ int	  strunvis(char *, const char *);
+ #undef NSIG
+ #endif /* NSIG */
+ #define NSIG 33
+-#ifndef HAVE_SIGLIST
+-extern const char *const sys_siglist[NSIG];
+-#endif /* !HAVE_SIGLIST */
++//#ifndef HAVE_SIGLIST
++//extern const char *const sys_siglist[NSIG];
++//#endif /* !HAVE_SIGLIST */
+ #ifndef HAVE_SIGNAME
+ extern const char *const sys_signame[NSIG];
+ #endif /* !HAVE_SIGNAME */
+diff --git a/siglist.c b/siglist.c
+index 790d7da..d8e3519 100644
+--- a/siglist.c
++++ b/siglist.c
+@@ -30,7 +30,7 @@
+ 
+ #include "pconfig.h"
+ 
+-#ifndef HAVE_SIGLIST
++#if 0
+ 
+ #include <signal.h>
+